From 5bd42d357da00298fa47bd8c672721195cf61d9a Mon Sep 17 00:00:00 2001 From: BJ4 Date: Fri, 2 Nov 2018 18:09:57 +0800 Subject: app: lock by chain correctly and remove old core in vendor --- .../dexon-consensus-core/common/event.go | 102 -- .../dexon-consensus-core/common/logger.go | 87 -- .../dexon-consensus-core/common/types.go | 107 -- .../dexon-consensus-core/common/utils.go | 14 - .../dexon-consensus-core/core/agreement-state.go | 170 --- .../dexon-consensus-core/core/agreement.go | 492 ------- .../dexon-consensus-core/core/authenticator.go | 148 --- .../core/blockdb/interfaces.go | 70 - .../dexon-consensus-core/core/blockdb/level-db.go | 127 -- .../dexon-consensus-core/core/blockdb/memory.go | 179 --- .../dexon-consensus-core/core/blockpool.go | 85 -- .../dexon-consensus-core/core/compaction-chain.go | 264 ---- .../core/configuration-chain.go | 312 ----- .../core/consensus-timestamp.go | 139 -- .../dexon-consensus-core/core/consensus.go | 1026 --------------- .../dexon-consensus-core/core/crypto.go | 264 ---- .../core/crypto/dkg/constant.go | 26 - .../dexon-consensus-core/core/crypto/dkg/dkg.go | 560 -------- .../dexon-consensus-core/core/crypto/dkg/utils.go | 71 - .../core/crypto/ecdsa/ecdsa.go | 133 -- .../dexon-consensus-core/core/crypto/interfaces.go | 48 - .../dexon-consensus-core/core/crypto/utils.go | 80 -- .../dexon-consensus-core/core/dkg-tsig-protocol.go | 578 --------- .../dexon-consensus-core/core/interfaces.go | 145 --- .../dexon-consensus-core/core/lattice-data.go | 645 ---------- .../dexon-consensus-core/core/lattice.go | 317 ----- .../dexon-consensus-core/core/leader-selector.go | 136 -- .../dexon-consensus-core/core/negative-ack.go | 211 --- .../dexon-consensus-core/core/nodeset-cache.go | 233 ---- .../dexon-consensus-core/core/nonblocking.go | 164 --- .../core/round-based-config.go | 50 - .../dexon-consensus-core/core/ticker.go | 77 -- .../core/total-ordering-syncer.go | 174 --- .../dexon-consensus-core/core/total-ordering.go | 1355 -------------------- .../core/types/block-randomness.go | 43 - .../dexon-consensus-core/core/types/block.go | 341 ----- .../dexon-consensus-core/core/types/config.go | 109 -- .../dexon-consensus-core/core/types/dkg/dkg.go | 194 --- .../dexon-consensus-core/core/types/node.go | 56 - .../dexon-consensus-core/core/types/nodeset.go | 145 --- .../dexon-consensus-core/core/types/position.go | 74 -- .../dexon-consensus-core/core/types/vote.go | 65 - .../dexon-consensus-core/core/utils.go | 161 --- .../dexon-consensus/core/agreement.go | 7 +- .../dexon-consensus/core/consensus.go | 26 +- .../dexon-consensus/core/interfaces.go | 3 +- .../dexon-consensus/core/leader-selector.go | 13 +- .../dexon-consensus/core/nonblocking.go | 16 +- vendor/vendor.json | 34 +- 49 files changed, 48 insertions(+), 9828 deletions(-) delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/common/event.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/common/logger.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/common/types.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/common/utils.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement-state.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/authenticator.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/interfaces.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/memory.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockpool.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/compaction-chain.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/configuration-chain.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus-timestamp.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/constant.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/dkg.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/utils.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/ecdsa/ecdsa.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/interfaces.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/utils.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/dkg-tsig-protocol.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/interfaces.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice-data.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/leader-selector.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/negative-ack.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/nodeset-cache.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/nonblocking.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/round-based-config.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/ticker.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering-syncer.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block-randomness.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/config.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/dkg/dkg.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/node.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/nodeset.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/position.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/vote.go delete mode 100644 vendor/github.com/dexon-foundation/dexon-consensus-core/core/utils.go (limited to 'vendor') diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/event.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/common/event.go deleted file mode 100644 index 6c6bf49d4..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/event.go +++ /dev/null @@ -1,102 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package common - -import ( - "container/heap" - "sync" - "time" -) - -type timeEventFn func(time.Time) - -type timeEvent struct { - t time.Time - fn timeEventFn -} - -// timeEvents implements a Min-Heap structure. -type timeEvents []timeEvent - -func (h timeEvents) Len() int { return len(h) } -func (h timeEvents) Less(i, j int) bool { return h[i].t.Before(h[j].t) } -func (h timeEvents) Swap(i, j int) { h[i], h[j] = h[j], h[i] } -func (h *timeEvents) Push(x interface{}) { - *h = append(*h, x.(timeEvent)) -} -func (h *timeEvents) Pop() interface{} { - old := *h - n := len(old) - x := old[n-1] - *h = old[0 : n-1] - return x -} - -// Event implements the Observer pattern. -type Event struct { - timeEvents timeEvents - timeEventsLock sync.Mutex -} - -// NewEvent creates a new event instance. -func NewEvent() *Event { - te := timeEvents{} - heap.Init(&te) - return &Event{ - timeEvents: te, - } -} - -// RegisterTime to get notified on and after specific time. -func (e *Event) RegisterTime(t time.Time, fn timeEventFn) { - e.timeEventsLock.Lock() - defer e.timeEventsLock.Unlock() - heap.Push(&e.timeEvents, timeEvent{ - t: t, - fn: fn, - }) -} - -// NotifyTime and trigger function callback. -func (e *Event) NotifyTime(t time.Time) { - fns := func() (fns []timeEventFn) { - e.timeEventsLock.Lock() - defer e.timeEventsLock.Unlock() - if len(e.timeEvents) == 0 { - return - } - for !t.Before(e.timeEvents[0].t) { - te := heap.Pop(&e.timeEvents).(timeEvent) - fns = append(fns, te.fn) - if len(e.timeEvents) == 0 { - return - } - } - return - }() - for _, fn := range fns { - fn(t) - } -} - -// Reset clears all pending event -func (e *Event) Reset() { - e.timeEventsLock.Lock() - defer e.timeEventsLock.Unlock() - e.timeEvents = timeEvents{} -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/logger.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/common/logger.go deleted file mode 100644 index 2eb1e2bd0..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/logger.go +++ /dev/null @@ -1,87 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package common - -import "log" - -// Logger define the way to receive logs from Consensus instance. -// NOTE: parameter in 'ctx' should be paired as key-value mapping. For example, -// to log an error with message: -// logger.Error("some message", "error", err) -// which is similar to loggers with context: -// logger.Error("some message", map[string]interface{}{ -// "error": err, -// }) -type Logger interface { - // Info logs info level logs. - Debug(msg string, ctx ...interface{}) - Info(msg string, ctx ...interface{}) - Warn(msg string, ctx ...interface{}) - Error(msg string, ctx ...interface{}) -} - -// NullLogger logs nothing. -type NullLogger struct{} - -// Debug implements Logger interface. -func (logger *NullLogger) Debug(msg string, ctx ...interface{}) { -} - -// Info implements Logger interface. -func (logger *NullLogger) Info(msg string, ctx ...interface{}) { -} - -// Warn implements Logger interface. -func (logger *NullLogger) Warn(msg string, ctx ...interface{}) { -} - -// Error implements Logger interface. -func (logger *NullLogger) Error(msg string, ctx ...interface{}) { -} - -// SimpleLogger logs everything. -type SimpleLogger struct{} - -// composeVargs makes (msg, ctx...) could be pass to log.Println -func composeVargs(msg string, ctxs []interface{}) []interface{} { - args := []interface{}{msg} - for _, c := range ctxs { - args = append(args, c) - } - return args -} - -// Debug implements Logger interface. -func (logger *SimpleLogger) Debug(msg string, ctx ...interface{}) { - log.Println(composeVargs(msg, ctx)...) -} - -// Info implements Logger interface. -func (logger *SimpleLogger) Info(msg string, ctx ...interface{}) { - log.Println(composeVargs(msg, ctx)...) -} - -// Warn implements Logger interface. -func (logger *SimpleLogger) Warn(msg string, ctx ...interface{}) { - log.Println(composeVargs(msg, ctx)...) -} - -// Error implements Logger interface. -func (logger *SimpleLogger) Error(msg string, ctx ...interface{}) { - log.Println(composeVargs(msg, ctx)...) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/types.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/common/types.go deleted file mode 100644 index a5dfab10e..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/types.go +++ /dev/null @@ -1,107 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it and/or -// modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package common - -import ( - "bytes" - "encoding/hex" - "sort" - "time" -) - -const ( - // HashLength is the length of a hash in DEXON. - HashLength = 32 -) - -// Hash is the basic hash type in DEXON. -type Hash [HashLength]byte - -func (h Hash) String() string { - return hex.EncodeToString([]byte(h[:])) -} - -// Bytes return the hash as slice of bytes. -func (h Hash) Bytes() []byte { - return h[:] -} - -// Equal compares if two hashes are the same. -func (h Hash) Equal(hp Hash) bool { - return h == hp -} - -// Less compares if current hash is lesser. -func (h Hash) Less(hp Hash) bool { - return bytes.Compare(h[:], hp[:]) < 0 -} - -// MarshalText implements the encoding.TextMarhsaler interface. -func (h Hash) MarshalText() ([]byte, error) { - result := make([]byte, hex.EncodedLen(HashLength)) - hex.Encode(result, h[:]) - return result, nil -} - -// UnmarshalText implements the encoding.TextUnmarshaler interface. -func (h *Hash) UnmarshalText(text []byte) error { - _, err := hex.Decode(h[:], text) - return err -} - -// Hashes is for sorting hashes. -type Hashes []Hash - -func (hs Hashes) Len() int { return len(hs) } -func (hs Hashes) Less(i, j int) bool { return hs[i].Less(hs[j]) } -func (hs Hashes) Swap(i, j int) { hs[i], hs[j] = hs[j], hs[i] } - -// SortedHashes is a slice of hashes sorted in ascending order. -type SortedHashes Hashes - -// NewSortedHashes converts a slice of hashes to a sorted one. It's a -// firewall to prevent us from assigning unsorted hashes to a variable -// declared as SortedHashes directly. -func NewSortedHashes(hs Hashes) SortedHashes { - sort.Sort(hs) - return SortedHashes(hs) -} - -// ByTime implements sort.Interface for time.Time. -type ByTime []time.Time - -func (t ByTime) Len() int { return len(t) } -func (t ByTime) Swap(i, j int) { t[i], t[j] = t[j], t[i] } -func (t ByTime) Less(i, j int) bool { return t[i].Before(t[j]) } diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/utils.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/common/utils.go deleted file mode 100644 index 7e89c059d..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/common/utils.go +++ /dev/null @@ -1,14 +0,0 @@ -package common - -import ( - "math/rand" -) - -// NewRandomHash returns a random Hash-like value. -func NewRandomHash() Hash { - x := Hash{} - for i := 0; i < HashLength; i++ { - x[i] = byte(rand.Int() % 256) - } - return x -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement-state.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement-state.go deleted file mode 100644 index 77569d549..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement-state.go +++ /dev/null @@ -1,170 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "fmt" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// Errors for agreement state module. -var ( - ErrNoEnoughVoteInPrepareState = fmt.Errorf("no enough vote in prepare state") - ErrNoEnoughVoteInAckState = fmt.Errorf("no enough vote in ack state") -) - -// agreementStateType is the state of agreement -type agreementStateType int - -// agreementStateType enum. -const ( - stateInitial agreementStateType = iota - statePreCommit - stateCommit - stateForward - statePullVote -) - -var nullBlockHash = common.Hash{} -var skipBlockHash common.Hash - -func init() { - for idx := range skipBlockHash { - skipBlockHash[idx] = 0xff - } -} - -type agreementState interface { - state() agreementStateType - nextState() (agreementState, error) - clocks() int -} - -//----- InitialState ----- -type initialState struct { - a *agreementData -} - -func newInitialState(a *agreementData) *initialState { - return &initialState{a: a} -} - -func (s *initialState) state() agreementStateType { return stateInitial } -func (s *initialState) clocks() int { return 0 } -func (s *initialState) nextState() (agreementState, error) { - hash := s.a.recv.ProposeBlock() - s.a.lock.Lock() - defer s.a.lock.Unlock() - s.a.recv.ProposeVote(&types.Vote{ - Type: types.VoteInit, - BlockHash: hash, - Period: s.a.period, - }) - return newPreCommitState(s.a), nil -} - -//----- PreCommitState ----- -type preCommitState struct { - a *agreementData -} - -func newPreCommitState(a *agreementData) *preCommitState { - return &preCommitState{a: a} -} - -func (s *preCommitState) state() agreementStateType { return statePreCommit } -func (s *preCommitState) clocks() int { return 2 } -func (s *preCommitState) nextState() (agreementState, error) { - s.a.lock.RLock() - defer s.a.lock.RUnlock() - hash := s.a.lockValue - if hash == nullBlockHash { - hash = s.a.leader.leaderBlockHash() - } - s.a.recv.ProposeVote(&types.Vote{ - Type: types.VotePreCom, - BlockHash: hash, - Period: s.a.period, - }) - return newCommitState(s.a), nil -} - -//----- CommitState ----- -type commitState struct { - a *agreementData -} - -func newCommitState(a *agreementData) *commitState { - return &commitState{a: a} -} - -func (s *commitState) state() agreementStateType { return stateCommit } -func (s *commitState) clocks() int { return 2 } -func (s *commitState) nextState() (agreementState, error) { - hash, ok := s.a.countVote(s.a.period, types.VotePreCom) - s.a.lock.Lock() - defer s.a.lock.Unlock() - if ok && hash != skipBlockHash { - s.a.lockValue = hash - s.a.lockRound = s.a.period - } else { - hash = skipBlockHash - } - s.a.recv.ProposeVote(&types.Vote{ - Type: types.VoteCom, - BlockHash: hash, - Period: s.a.period, - }) - return newForwardState(s.a), nil -} - -// ----- ForwardState ----- -type forwardState struct { - a *agreementData -} - -func newForwardState(a *agreementData) *forwardState { - return &forwardState{a: a} -} - -func (s *forwardState) state() agreementStateType { return stateForward } -func (s *forwardState) clocks() int { return 4 } - -func (s *forwardState) nextState() (agreementState, error) { - return newPullVoteState(s.a), nil -} - -// ----- PullVoteState ----- -// pullVoteState is a special state to ensure the assumption in the consensus -// algorithm that every vote will eventually arrive for all nodes. -type pullVoteState struct { - a *agreementData -} - -func newPullVoteState(a *agreementData) *pullVoteState { - return &pullVoteState{a: a} -} - -func (s *pullVoteState) state() agreementStateType { return statePullVote } -func (s *pullVoteState) clocks() int { return 4 } - -func (s *pullVoteState) nextState() (agreementState, error) { - return s, nil -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement.go deleted file mode 100644 index 8741baf10..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/agreement.go +++ /dev/null @@ -1,492 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "fmt" - "math" - "sync" - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// Errors for agreement module. -var ( - ErrNotInNotarySet = fmt.Errorf("not in notary set") - ErrIncorrectVoteSignature = fmt.Errorf("incorrect vote signature") -) - -// ErrFork for fork error in agreement. -type ErrFork struct { - nID types.NodeID - old, new common.Hash -} - -func (e *ErrFork) Error() string { - return fmt.Sprintf("fork is found for %s, old %s, new %s", - e.nID.String(), e.old, e.new) -} - -// ErrForkVote for fork vote error in agreement. -type ErrForkVote struct { - nID types.NodeID - old, new *types.Vote -} - -func (e *ErrForkVote) Error() string { - return fmt.Sprintf("fork vote is found for %s, old %s, new %s", - e.nID.String(), e.old, e.new) -} - -func newVoteListMap() []map[types.NodeID]*types.Vote { - listMap := make([]map[types.NodeID]*types.Vote, types.MaxVoteType) - for idx := range listMap { - listMap[idx] = make(map[types.NodeID]*types.Vote) - } - return listMap -} - -// agreementReceiver is the interface receiving agreement event. -type agreementReceiver interface { - ProposeVote(vote *types.Vote) - ProposeBlock() common.Hash - // ConfirmBlock is called with lock hold. User can safely use all data within - // agreement module. - ConfirmBlock(common.Hash, map[types.NodeID]*types.Vote) - PullBlocks(common.Hashes) -} - -type pendingBlock struct { - block *types.Block - receivedTime time.Time -} - -type pendingVote struct { - vote *types.Vote - receivedTime time.Time -} - -// agreementData is the data for agreementState. -type agreementData struct { - recv agreementReceiver - - ID types.NodeID - leader *leaderSelector - lockValue common.Hash - lockRound uint64 - period uint64 - requiredVote int - votes map[uint64][]map[types.NodeID]*types.Vote - lock sync.RWMutex - blocks map[types.NodeID]*types.Block - blocksLock sync.Mutex -} - -// agreement is the agreement protocal describe in the Crypto Shuffle Algorithm. -type agreement struct { - state agreementState - data *agreementData - aID types.Position - notarySet map[types.NodeID]struct{} - hasOutput bool - lock sync.RWMutex - pendingBlock []pendingBlock - pendingVote []pendingVote - candidateBlock map[common.Hash]*types.Block - fastForward chan uint64 - authModule *Authenticator -} - -// newAgreement creates a agreement instance. -func newAgreement( - ID types.NodeID, - recv agreementReceiver, - notarySet map[types.NodeID]struct{}, - leader *leaderSelector, - authModule *Authenticator) *agreement { - agreement := &agreement{ - data: &agreementData{ - recv: recv, - ID: ID, - leader: leader, - }, - candidateBlock: make(map[common.Hash]*types.Block), - fastForward: make(chan uint64, 1), - authModule: authModule, - } - agreement.stop() - return agreement -} - -// restart the agreement -func (a *agreement) restart( - notarySet map[types.NodeID]struct{}, aID types.Position) { - - func() { - a.lock.Lock() - defer a.lock.Unlock() - a.data.lock.Lock() - defer a.data.lock.Unlock() - a.data.blocksLock.Lock() - defer a.data.blocksLock.Unlock() - a.data.votes = make(map[uint64][]map[types.NodeID]*types.Vote) - a.data.votes[1] = newVoteListMap() - a.data.period = 1 - a.data.blocks = make(map[types.NodeID]*types.Block) - a.data.requiredVote = len(notarySet)/3*2 + 1 - a.data.leader.restart() - a.data.lockValue = nullBlockHash - a.data.lockRound = 1 - a.fastForward = make(chan uint64, 1) - a.hasOutput = false - a.state = newInitialState(a.data) - a.notarySet = notarySet - a.candidateBlock = make(map[common.Hash]*types.Block) - a.aID = *aID.Clone() - }() - - if isStop(aID) { - return - } - - expireTime := time.Now().Add(-10 * time.Second) - replayBlock := make([]*types.Block, 0) - func() { - a.lock.Lock() - defer a.lock.Unlock() - newPendingBlock := make([]pendingBlock, 0) - for _, pending := range a.pendingBlock { - if aID.Newer(&pending.block.Position) { - continue - } else if pending.block.Position == aID { - replayBlock = append(replayBlock, pending.block) - } else if pending.receivedTime.After(expireTime) { - newPendingBlock = append(newPendingBlock, pending) - } - } - a.pendingBlock = newPendingBlock - }() - - replayVote := make([]*types.Vote, 0) - func() { - a.lock.Lock() - defer a.lock.Unlock() - newPendingVote := make([]pendingVote, 0) - for _, pending := range a.pendingVote { - if aID.Newer(&pending.vote.Position) { - continue - } else if pending.vote.Position == aID { - replayVote = append(replayVote, pending.vote) - } else if pending.receivedTime.After(expireTime) { - newPendingVote = append(newPendingVote, pending) - } - } - a.pendingVote = newPendingVote - }() - - for _, block := range replayBlock { - a.processBlock(block) - } - - for _, vote := range replayVote { - a.processVote(vote) - } -} - -func (a *agreement) stop() { - a.restart(make(map[types.NodeID]struct{}), types.Position{ - ChainID: math.MaxUint32, - }) -} - -func isStop(aID types.Position) bool { - return aID.ChainID == math.MaxUint32 -} - -// clocks returns how many time this state is required. -func (a *agreement) clocks() int { - return a.state.clocks() -} - -// pullVotes returns if current agreement requires more votes to continue. -func (a *agreement) pullVotes() bool { - return a.state.state() == statePullVote -} - -// agreementID returns the current agreementID. -func (a *agreement) agreementID() types.Position { - a.lock.RLock() - defer a.lock.RUnlock() - return a.aID -} - -// nextState is called at the specific clock time. -func (a *agreement) nextState() (err error) { - a.state, err = a.state.nextState() - return -} - -func (a *agreement) sanityCheck(vote *types.Vote) error { - if _, exist := a.notarySet[vote.ProposerID]; !exist { - return ErrNotInNotarySet - } - ok, err := verifyVoteSignature(vote) - if err != nil { - return err - } - if !ok { - return ErrIncorrectVoteSignature - } - return nil -} - -func (a *agreement) checkForkVote(vote *types.Vote) error { - if err := func() error { - a.data.lock.RLock() - defer a.data.lock.RUnlock() - if votes, exist := a.data.votes[vote.Period]; exist { - if oldVote, exist := votes[vote.Type][vote.ProposerID]; exist { - if vote.BlockHash != oldVote.BlockHash { - return &ErrForkVote{vote.ProposerID, oldVote, vote} - } - } - } - return nil - }(); err != nil { - return err - } - return nil -} - -// prepareVote prepares a vote. -func (a *agreement) prepareVote(vote *types.Vote) (err error) { - vote.Position = a.agreementID() - err = a.authModule.SignVote(vote) - return -} - -// processVote is the entry point for processing Vote. -func (a *agreement) processVote(vote *types.Vote) error { - a.lock.Lock() - defer a.lock.Unlock() - if err := a.sanityCheck(vote); err != nil { - return err - } - if vote.Position != a.aID { - // Agreement module has stopped. - if !isStop(a.aID) { - if a.aID.Newer(&vote.Position) { - return nil - } - } - a.pendingVote = append(a.pendingVote, pendingVote{ - vote: vote, - receivedTime: time.Now().UTC(), - }) - return nil - } - if err := a.checkForkVote(vote); err != nil { - return err - } - - a.data.lock.Lock() - defer a.data.lock.Unlock() - if _, exist := a.data.votes[vote.Period]; !exist { - a.data.votes[vote.Period] = newVoteListMap() - } - a.data.votes[vote.Period][vote.Type][vote.ProposerID] = vote - if !a.hasOutput && vote.Type == types.VoteCom { - if hash, ok := a.data.countVoteNoLock(vote.Period, vote.Type); ok && - hash != skipBlockHash { - a.hasOutput = true - a.data.recv.ConfirmBlock(hash, - a.data.votes[vote.Period][types.VoteCom]) - return nil - } - } else if a.hasOutput { - return nil - } - - // Check if the agreement requires fast-forwarding. - if len(a.fastForward) > 0 { - return nil - } - if vote.Type == types.VotePreCom { - if hash, ok := a.data.countVoteNoLock(vote.Period, vote.Type); ok && - hash != skipBlockHash { - // Condition 1. - if a.data.period >= vote.Period && vote.Period > a.data.lockRound && - vote.BlockHash != a.data.lockValue { - a.data.lockValue = hash - a.data.lockRound = vote.Period - a.fastForward <- a.data.period + 1 - return nil - } - // Condition 2. - if vote.Period > a.data.period { - a.data.lockValue = hash - a.data.lockRound = vote.Period - a.fastForward <- vote.Period - return nil - } - } - } - // Condition 3. - if vote.Type == types.VoteCom && vote.Period >= a.data.period && - len(a.data.votes[vote.Period][types.VoteCom]) >= a.data.requiredVote { - hashes := common.Hashes{} - addPullBlocks := func(voteType types.VoteType) { - for _, vote := range a.data.votes[vote.Period][voteType] { - if vote.BlockHash == nullBlockHash || vote.BlockHash == skipBlockHash { - continue - } - if _, found := a.findCandidateBlockNoLock(vote.BlockHash); !found { - hashes = append(hashes, vote.BlockHash) - } - } - } - addPullBlocks(types.VoteInit) - addPullBlocks(types.VotePreCom) - addPullBlocks(types.VoteCom) - if len(hashes) > 0 { - a.data.recv.PullBlocks(hashes) - } - a.fastForward <- vote.Period + 1 - return nil - } - return nil -} - -func (a *agreement) done() <-chan struct{} { - a.lock.Lock() - defer a.lock.Unlock() - a.data.lock.Lock() - defer a.data.lock.Unlock() - ch := make(chan struct{}, 1) - if a.hasOutput { - ch <- struct{}{} - } else { - select { - case period := <-a.fastForward: - if period <= a.data.period { - break - } - a.data.setPeriod(period) - a.state = newPreCommitState(a.data) - ch <- struct{}{} - default: - } - } - return ch -} - -// processBlock is the entry point for processing Block. -func (a *agreement) processBlock(block *types.Block) error { - a.lock.Lock() - defer a.lock.Unlock() - a.data.blocksLock.Lock() - defer a.data.blocksLock.Unlock() - - if block.Position != a.aID { - // Agreement module has stopped. - if !isStop(a.aID) { - if a.aID.Newer(&block.Position) { - return nil - } - } - a.pendingBlock = append(a.pendingBlock, pendingBlock{ - block: block, - receivedTime: time.Now().UTC(), - }) - return nil - } - if b, exist := a.data.blocks[block.ProposerID]; exist { - if b.Hash != block.Hash { - return &ErrFork{block.ProposerID, b.Hash, block.Hash} - } - return nil - } - if err := a.data.leader.processBlock(block); err != nil { - return err - } - a.data.blocks[block.ProposerID] = block - a.addCandidateBlockNoLock(block) - return nil -} - -func (a *agreement) addCandidateBlock(block *types.Block) { - a.lock.Lock() - defer a.lock.Unlock() - a.addCandidateBlockNoLock(block) -} - -func (a *agreement) addCandidateBlockNoLock(block *types.Block) { - a.candidateBlock[block.Hash] = block -} - -func (a *agreement) findCandidateBlock(hash common.Hash) (*types.Block, bool) { - a.lock.RLock() - defer a.lock.RUnlock() - return a.findCandidateBlockNoLock(hash) -} - -func (a *agreement) findCandidateBlockNoLock( - hash common.Hash) (*types.Block, bool) { - b, e := a.candidateBlock[hash] - return b, e -} -func (a *agreementData) countVote(period uint64, voteType types.VoteType) ( - blockHash common.Hash, ok bool) { - a.lock.RLock() - defer a.lock.RUnlock() - return a.countVoteNoLock(period, voteType) -} - -func (a *agreementData) countVoteNoLock( - period uint64, voteType types.VoteType) (blockHash common.Hash, ok bool) { - votes, exist := a.votes[period] - if !exist { - return - } - candidate := make(map[common.Hash]int) - for _, vote := range votes[voteType] { - if _, exist := candidate[vote.BlockHash]; !exist { - candidate[vote.BlockHash] = 0 - } - candidate[vote.BlockHash]++ - } - for candidateHash, votes := range candidate { - if votes >= a.requiredVote { - blockHash = candidateHash - ok = true - return - } - } - return -} - -func (a *agreementData) setPeriod(period uint64) { - for i := a.period + 1; i <= period; i++ { - if _, exist := a.votes[i]; !exist { - a.votes[i] = newVoteListMap() - } - } - a.period = period -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/authenticator.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/authenticator.go deleted file mode 100644 index 5d176cfee..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/authenticator.go +++ /dev/null @@ -1,148 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" - typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg" -) - -// Authenticator verify data owner. -type Authenticator struct { - prvKey crypto.PrivateKey - pubKey crypto.PublicKey - proposerID types.NodeID -} - -// NewAuthenticator constructs an Authenticator instance. -func NewAuthenticator(prvKey crypto.PrivateKey) (auth *Authenticator) { - auth = &Authenticator{ - prvKey: prvKey, - pubKey: prvKey.PublicKey(), - } - auth.proposerID = types.NewNodeID(auth.pubKey) - return -} - -// SignBlock signs a types.Block. -func (au *Authenticator) SignBlock(b *types.Block) (err error) { - b.ProposerID = au.proposerID - b.PayloadHash = crypto.Keccak256Hash(b.Payload) - if b.Hash, err = hashBlock(b); err != nil { - return - } - if b.Signature, err = au.prvKey.Sign(b.Hash); err != nil { - return - } - return -} - -// SignVote signs a types.Vote. -func (au *Authenticator) SignVote(v *types.Vote) (err error) { - v.ProposerID = au.proposerID - v.Signature, err = au.prvKey.Sign(hashVote(v)) - return -} - -// SignCRS signs CRS signature of types.Block. -func (au *Authenticator) SignCRS(b *types.Block, crs common.Hash) (err error) { - if b.ProposerID != au.proposerID { - err = ErrInvalidProposerID - return - } - b.CRSSignature, err = au.prvKey.Sign(hashCRS(b, crs)) - return -} - -// SignDKGComplaint signs a DKG complaint. -func (au *Authenticator) SignDKGComplaint( - complaint *typesDKG.Complaint) (err error) { - complaint.ProposerID = au.proposerID - complaint.Signature, err = au.prvKey.Sign(hashDKGComplaint(complaint)) - return -} - -// SignDKGMasterPublicKey signs a DKG master public key. -func (au *Authenticator) SignDKGMasterPublicKey( - mpk *typesDKG.MasterPublicKey) (err error) { - mpk.ProposerID = au.proposerID - mpk.Signature, err = au.prvKey.Sign(hashDKGMasterPublicKey(mpk)) - return -} - -// SignDKGPrivateShare signs a DKG private share. -func (au *Authenticator) SignDKGPrivateShare( - prvShare *typesDKG.PrivateShare) (err error) { - prvShare.ProposerID = au.proposerID - prvShare.Signature, err = au.prvKey.Sign(hashDKGPrivateShare(prvShare)) - return -} - -// SignDKGPartialSignature signs a DKG partial signature. -func (au *Authenticator) SignDKGPartialSignature( - pSig *typesDKG.PartialSignature) (err error) { - pSig.ProposerID = au.proposerID - pSig.Signature, err = au.prvKey.Sign(hashDKGPartialSignature(pSig)) - return -} - -// SignDKGFinalize signs a DKG finalize message. -func (au *Authenticator) SignDKGFinalize( - final *typesDKG.Finalize) (err error) { - final.ProposerID = au.proposerID - final.Signature, err = au.prvKey.Sign(hashDKGFinalize(final)) - return -} - -// VerifyBlock verifies the signature of types.Block. -func (au *Authenticator) VerifyBlock(b *types.Block) (err error) { - payloadHash := crypto.Keccak256Hash(b.Payload) - if payloadHash != b.PayloadHash { - err = ErrIncorrectHash - return - } - hash, err := hashBlock(b) - if err != nil { - return - } - if hash != b.Hash { - err = ErrIncorrectHash - return - } - pubKey, err := crypto.SigToPub(b.Hash, b.Signature) - if err != nil { - return - } - if !b.ProposerID.Equal(types.NewNodeID(pubKey)) { - err = ErrIncorrectSignature - return - } - return -} - -// VerifyVote verifies the signature of types.Vote. -func (au *Authenticator) VerifyVote(v *types.Vote) (bool, error) { - return verifyVoteSignature(v) -} - -// VerifyCRS verifies the CRS signature of types.Block. -func (au *Authenticator) VerifyCRS(b *types.Block, crs common.Hash) (bool, error) { - return verifyCRSSignature(b, crs) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/interfaces.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/interfaces.go deleted file mode 100644 index c85630775..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/interfaces.go +++ /dev/null @@ -1,70 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package blockdb - -import ( - "errors" - "fmt" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -var ( - // ErrBlockExists is the error when block eixsts. - ErrBlockExists = errors.New("block exists") - // ErrBlockDoesNotExist is the error when block does not eixst. - ErrBlockDoesNotExist = errors.New("block does not exist") - // ErrIterationFinished is the error to check if the iteration is finished. - ErrIterationFinished = errors.New("iteration finished") - // ErrEmptyPath is the error when the required path is empty. - ErrEmptyPath = fmt.Errorf("empty path") - // ErrClosed is the error when using DB after it's closed. - ErrClosed = fmt.Errorf("db closed") - // ErrNotImplemented is the error that some interface is not implemented. - ErrNotImplemented = fmt.Errorf("not implemented") -) - -// BlockDatabase is the interface for a BlockDatabase. -type BlockDatabase interface { - Reader - Writer - - // Close allows database implementation able to - // release resource when finishing. - Close() error -} - -// Reader defines the interface for reading blocks into DB. -type Reader interface { - Has(hash common.Hash) bool - Get(hash common.Hash) (types.Block, error) - GetAll() (BlockIterator, error) -} - -// Writer defines the interface for writing blocks into DB. -type Writer interface { - Update(block types.Block) error - Put(block types.Block) error -} - -// BlockIterator defines an iterator on blocks hold -// in a DB. -type BlockIterator interface { - Next() (types.Block, error) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go deleted file mode 100644 index 76730fc9c..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package blockdb - -import ( - "encoding/json" - - "github.com/syndtr/goleveldb/leveldb" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// LevelDBBackedBlockDB is a leveldb backed BlockDB implementation. -type LevelDBBackedBlockDB struct { - db *leveldb.DB -} - -// NewLevelDBBackedBlockDB initialize a leveldb-backed block database. -func NewLevelDBBackedBlockDB( - path string) (lvl *LevelDBBackedBlockDB, err error) { - - db, err := leveldb.OpenFile(path, nil) - if err != nil { - return - } - lvl = &LevelDBBackedBlockDB{db: db} - return -} - -// Close implement Closer interface, which would release allocated resource. -func (lvl *LevelDBBackedBlockDB) Close() error { - return lvl.db.Close() -} - -// Has implements the Reader.Has method. -func (lvl *LevelDBBackedBlockDB) Has(hash common.Hash) bool { - exists, err := lvl.db.Has([]byte(hash[:]), nil) - if err != nil { - // TODO(missionliao): Modify the interface to return error. - panic(err) - } - return exists -} - -// Get implements the Reader.Get method. -func (lvl *LevelDBBackedBlockDB) Get( - hash common.Hash) (block types.Block, err error) { - - queried, err := lvl.db.Get([]byte(hash[:]), nil) - if err != nil { - if err == leveldb.ErrNotFound { - err = ErrBlockDoesNotExist - } - return - } - err = json.Unmarshal(queried, &block) - if err != nil { - return - } - return -} - -// Update implements the Writer.Update method. -func (lvl *LevelDBBackedBlockDB) Update(block types.Block) (err error) { - // NOTE: we didn't handle changes of block hash (and it - // should not happen). - marshaled, err := json.Marshal(&block) - if err != nil { - return - } - - if !lvl.Has(block.Hash) { - err = ErrBlockDoesNotExist - return - } - err = lvl.db.Put( - []byte(block.Hash[:]), - marshaled, - nil) - if err != nil { - return - } - return -} - -// Put implements the Writer.Put method. -func (lvl *LevelDBBackedBlockDB) Put(block types.Block) (err error) { - marshaled, err := json.Marshal(&block) - if err != nil { - return - } - if lvl.Has(block.Hash) { - err = ErrBlockExists - return - } - err = lvl.db.Put( - []byte(block.Hash[:]), - marshaled, - nil) - if err != nil { - return - } - return -} - -// GetAll implements Reader.GetAll method, which allows callers -// to retrieve all blocks in DB. -func (lvl *LevelDBBackedBlockDB) GetAll() (BlockIterator, error) { - // TODO (mission): Implement this part via goleveldb's iterator. - return nil, ErrNotImplemented -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/memory.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/memory.go deleted file mode 100644 index 760646e10..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/memory.go +++ /dev/null @@ -1,179 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package blockdb - -import ( - "encoding/json" - "io/ioutil" - "os" - "sync" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -type seqIterator struct { - idx int - db *MemBackedBlockDB -} - -func (seq *seqIterator) Next() (types.Block, error) { - curIdx := seq.idx - seq.idx++ - return seq.db.getByIndex(curIdx) -} - -// MemBackedBlockDB is a memory backed BlockDB implementation. -type MemBackedBlockDB struct { - blocksMutex sync.RWMutex - blockHashSequence common.Hashes - blocksByHash map[common.Hash]*types.Block - persistantFilePath string -} - -// NewMemBackedBlockDB initialize a memory-backed block database. -func NewMemBackedBlockDB(persistantFilePath ...string) (db *MemBackedBlockDB, err error) { - db = &MemBackedBlockDB{ - blockHashSequence: common.Hashes{}, - blocksByHash: make(map[common.Hash]*types.Block), - } - if len(persistantFilePath) == 0 || len(persistantFilePath[0]) == 0 { - return - } - db.persistantFilePath = persistantFilePath[0] - buf, err := ioutil.ReadFile(db.persistantFilePath) - if err != nil { - if !os.IsNotExist(err) { - // Something unexpected happened. - return - } - // It's expected behavior that file doesn't exists, we should not - // report error on it. - err = nil - return - } - - // Init this instance by file content, it's a temporary way - // to export those private field for JSON encoding. - toLoad := struct { - Sequence common.Hashes - ByHash map[common.Hash]*types.Block - }{} - err = json.Unmarshal(buf, &toLoad) - if err != nil { - return - } - db.blockHashSequence = toLoad.Sequence - db.blocksByHash = toLoad.ByHash - return -} - -// Has returns wheter or not the DB has a block identified with the hash. -func (m *MemBackedBlockDB) Has(hash common.Hash) bool { - m.blocksMutex.RLock() - defer m.blocksMutex.RUnlock() - - _, ok := m.blocksByHash[hash] - return ok -} - -// Get returns a block given a hash. -func (m *MemBackedBlockDB) Get(hash common.Hash) (types.Block, error) { - m.blocksMutex.RLock() - defer m.blocksMutex.RUnlock() - - return m.internalGet(hash) -} - -func (m *MemBackedBlockDB) internalGet(hash common.Hash) (types.Block, error) { - b, ok := m.blocksByHash[hash] - if !ok { - return types.Block{}, ErrBlockDoesNotExist - } - return *b, nil -} - -// Put inserts a new block into the database. -func (m *MemBackedBlockDB) Put(block types.Block) error { - if m.Has(block.Hash) { - return ErrBlockExists - } - - m.blocksMutex.Lock() - defer m.blocksMutex.Unlock() - - m.blockHashSequence = append(m.blockHashSequence, block.Hash) - m.blocksByHash[block.Hash] = &block - return nil -} - -// Update updates a block in the database. -func (m *MemBackedBlockDB) Update(block types.Block) error { - m.blocksMutex.Lock() - defer m.blocksMutex.Unlock() - - m.blocksByHash[block.Hash] = &block - return nil -} - -// Close implement Closer interface, which would release allocated resource. -func (m *MemBackedBlockDB) Close() (err error) { - // Save internal state to a pretty-print json file. It's a temporary way - // to dump private file via JSON encoding. - if len(m.persistantFilePath) == 0 { - return - } - - m.blocksMutex.RLock() - defer m.blocksMutex.RUnlock() - - toDump := struct { - Sequence common.Hashes - ByHash map[common.Hash]*types.Block - }{ - Sequence: m.blockHashSequence, - ByHash: m.blocksByHash, - } - - // Dump to JSON with 2-space indent. - buf, err := json.Marshal(&toDump) - if err != nil { - return - } - - err = ioutil.WriteFile(m.persistantFilePath, buf, 0644) - return -} - -func (m *MemBackedBlockDB) getByIndex(idx int) (types.Block, error) { - m.blocksMutex.RLock() - defer m.blocksMutex.RUnlock() - - if idx >= len(m.blockHashSequence) { - return types.Block{}, ErrIterationFinished - } - - hash := m.blockHashSequence[idx] - return m.internalGet(hash) -} - -// GetAll implement Reader.GetAll method, which allows caller -// to retrieve all blocks in DB. -func (m *MemBackedBlockDB) GetAll() (BlockIterator, error) { - return &seqIterator{db: m}, nil -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockpool.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockpool.go deleted file mode 100644 index 261966719..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockpool.go +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "container/heap" - - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// blockPool is a slice of heap of blocks, indexed by chainID, -// and the heap is sorted based on heights of blocks. -type blockPool []types.ByPosition - -// newBlockPool constructs a blockPool. -func newBlockPool(chainNum uint32) (pool blockPool) { - pool = make(blockPool, chainNum) - for _, p := range pool { - heap.Init(&p) - } - return -} - -// resize the pool if new chain is added. -func (p *blockPool) resize(num uint32) { - if uint32(len(*p)) >= num { - return - } - newPool := make([]types.ByPosition, num) - copy(newPool, *p) - for i := uint32(len(*p)); i < num; i++ { - newChain := types.ByPosition{} - heap.Init(&newChain) - newPool[i] = newChain - } - *p = newPool -} - -// addBlock adds a block into pending set and make sure these -// blocks are sorted by height. -func (p blockPool) addBlock(b *types.Block) { - heap.Push(&p[b.Position.ChainID], b) -} - -// purgeBlocks purge blocks of that chain with less-or-equal height. -// NOTE: we won't check the validity of 'chainID', the caller should -// be sure what he is expecting. -func (p blockPool) purgeBlocks(chainID uint32, height uint64) { - for { - if len(p[chainID]) == 0 || p[chainID][0].Position.Height > height { - break - } - heap.Pop(&p[chainID]) - } -} - -// tip get the blocks with lowest height of the chain if any. -func (p blockPool) tip(chainID uint32) *types.Block { - if len(p[chainID]) == 0 { - return nil - } - return p[chainID][0] -} - -// removeTip removes block with lowest height of the specified chain. -func (p blockPool) removeTip(chainID uint32) { - if len(p[chainID]) > 0 { - heap.Pop(&p[chainID]) - } -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/compaction-chain.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/compaction-chain.go deleted file mode 100644 index 65592f1d0..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/compaction-chain.go +++ /dev/null @@ -1,264 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "container/heap" - "fmt" - "sync" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// Errors for compaction chain module. -var ( - ErrBlockNotRegistered = fmt.Errorf( - "block not registered") - ErrNotInitiazlied = fmt.Errorf( - "not initialized") -) - -type finalizedBlockHeap = types.ByFinalizationHeight - -type compactionChain struct { - gov Governance - chainUnsynced uint32 - tsigVerifier *TSigVerifierCache - blocks map[common.Hash]*types.Block - pendingBlocks []*types.Block - pendingFinalizedBlocks *finalizedBlockHeap - lock sync.RWMutex - prevBlock *types.Block -} - -func newCompactionChain(gov Governance) *compactionChain { - pendingFinalizedBlocks := &finalizedBlockHeap{} - heap.Init(pendingFinalizedBlocks) - return &compactionChain{ - gov: gov, - tsigVerifier: NewTSigVerifierCache(gov, 7), - blocks: make(map[common.Hash]*types.Block), - pendingFinalizedBlocks: pendingFinalizedBlocks, - } -} - -func (cc *compactionChain) init(initBlock *types.Block) { - cc.lock.Lock() - defer cc.lock.Unlock() - cc.prevBlock = initBlock - cc.pendingBlocks = []*types.Block{} - if initBlock.Finalization.Height == 0 { - cc.chainUnsynced = cc.gov.Configuration(uint64(0)).NumChains - cc.pendingBlocks = append(cc.pendingBlocks, initBlock) - } -} - -func (cc *compactionChain) registerBlock(block *types.Block) { - if cc.blockRegistered(block.Hash) { - return - } - cc.lock.Lock() - defer cc.lock.Unlock() - cc.blocks[block.Hash] = block -} - -func (cc *compactionChain) blockRegistered(hash common.Hash) (exist bool) { - cc.lock.RLock() - defer cc.lock.RUnlock() - _, exist = cc.blocks[hash] - return -} - -func (cc *compactionChain) processBlock(block *types.Block) error { - prevBlock := cc.lastBlock() - if prevBlock == nil { - return ErrNotInitiazlied - } - cc.lock.Lock() - defer cc.lock.Unlock() - if prevBlock.Finalization.Height == 0 && block.Position.Height == 0 { - cc.chainUnsynced-- - } - cc.pendingBlocks = append(cc.pendingBlocks, block) - return nil -} - -func (cc *compactionChain) extractBlocks() []*types.Block { - prevBlock := cc.lastBlock() - - // Check if we're synced. - if !func() bool { - cc.lock.RLock() - defer cc.lock.RUnlock() - if len(cc.pendingBlocks) == 0 { - return false - } - // Finalization.Height == 0 is syncing from bootstrap. - if prevBlock.Finalization.Height == 0 { - return cc.chainUnsynced == 0 - } - if prevBlock.Hash != cc.pendingBlocks[0].Hash { - return false - } - return true - }() { - return []*types.Block{} - } - deliveringBlocks := make([]*types.Block, 0) - cc.lock.Lock() - defer cc.lock.Unlock() - // cc.pendingBlocks[0] will not be popped and will equal to cc.prevBlock. - for len(cc.pendingBlocks) > 1 && - (len(cc.pendingBlocks[1].Finalization.Randomness) != 0 || - cc.pendingBlocks[1].Position.Round == 0) { - delete(cc.blocks, cc.pendingBlocks[0].Hash) - cc.pendingBlocks = cc.pendingBlocks[1:] - - block := cc.pendingBlocks[0] - block.Finalization.ParentHash = prevBlock.Hash - block.Finalization.Height = prevBlock.Finalization.Height + 1 - deliveringBlocks = append(deliveringBlocks, block) - prevBlock = block - } - - cc.prevBlock = prevBlock - - return deliveringBlocks -} - -func (cc *compactionChain) processFinalizedBlock(block *types.Block) { - if block.Finalization.Height <= cc.lastBlock().Finalization.Height { - return - } - - // Block of round 0 should not have randomness. - if block.Position.Round == 0 && len(block.Finalization.Randomness) != 0 { - return - } - - cc.lock.Lock() - defer cc.lock.Unlock() - heap.Push(cc.pendingFinalizedBlocks, block) - - return -} - -func (cc *compactionChain) extractFinalizedBlocks() []*types.Block { - prevBlock := cc.lastBlock() - - blocks := func() []*types.Block { - cc.lock.Lock() - defer cc.lock.Unlock() - blocks := []*types.Block{} - prevHeight := prevBlock.Finalization.Height - for cc.pendingFinalizedBlocks.Len() != 0 { - tip := (*cc.pendingFinalizedBlocks)[0] - // Pop blocks that are already confirmed. - if tip.Finalization.Height <= prevBlock.Finalization.Height { - heap.Pop(cc.pendingFinalizedBlocks) - continue - } - // Since we haven't verified the finalized block, - // it is possible to be forked. - if tip.Finalization.Height == prevHeight || - tip.Finalization.Height == prevHeight+1 { - prevHeight = tip.Finalization.Height - blocks = append(blocks, tip) - heap.Pop(cc.pendingFinalizedBlocks) - } else { - break - } - } - return blocks - }() - toPending := []*types.Block{} - confirmed := []*types.Block{} - for _, b := range blocks { - if b.Hash == prevBlock.Hash && - b.Finalization.Height == prevBlock.Finalization.Height { - continue - } - round := b.Position.Round - if round != 0 { - // Randomness is not available at round 0. - v, ok, err := cc.tsigVerifier.UpdateAndGet(round) - if err != nil { - continue - } - if !ok { - toPending = append(toPending, b) - continue - } - if ok := v.VerifySignature(b.Hash, crypto.Signature{ - Type: "bls", - Signature: b.Finalization.Randomness}); !ok { - continue - } - } - // Fork resolution: choose block with smaller hash. - if prevBlock.Finalization.Height == b.Finalization.Height { - //TODO(jimmy-dexon): remove this panic after test. - if true { - // workaround to `go vet` error - panic(fmt.Errorf( - "forked finalized block %s,%s", prevBlock.Hash, b.Hash)) - } - if b.Hash.Less(prevBlock.Hash) { - confirmed = confirmed[:len(confirmed)-1] - } else { - continue - } - } - if b.Finalization.Height-prevBlock.Finalization.Height > 1 { - toPending = append(toPending, b) - continue - } - confirmed = append(confirmed, b) - prevBlock = b - } - cc.lock.Lock() - defer cc.lock.Unlock() - if len(confirmed) != 0 && cc.prevBlock.Finalization.Height == 0 { - // Pop the initBlock inserted when bootstrapping. - cc.pendingBlocks = cc.pendingBlocks[1:] - } - cc.prevBlock = prevBlock - for _, b := range toPending { - heap.Push(cc.pendingFinalizedBlocks, b) - } - return confirmed -} - -func (cc *compactionChain) processBlockRandomnessResult( - rand *types.BlockRandomnessResult) error { - if !cc.blockRegistered(rand.BlockHash) { - return ErrBlockNotRegistered - } - cc.lock.Lock() - defer cc.lock.Unlock() - cc.blocks[rand.BlockHash].Finalization.Randomness = rand.Randomness - return nil -} - -func (cc *compactionChain) lastBlock() *types.Block { - cc.lock.RLock() - defer cc.lock.RUnlock() - return cc.prevBlock -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/configuration-chain.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/configuration-chain.go deleted file mode 100644 index 5e5a587cb..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/configuration-chain.go +++ /dev/null @@ -1,312 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "fmt" - "sync" - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" - typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg" -) - -// Errors for configuration chain.. -var ( - ErrDKGNotRegistered = fmt.Errorf( - "not yet registered in DKG protocol") - ErrTSigAlreadyRunning = fmt.Errorf( - "tsig is already running") - ErrDKGNotReady = fmt.Errorf( - "DKG is not ready") -) - -type configurationChain struct { - ID types.NodeID - recv dkgReceiver - gov Governance - dkg *dkgProtocol - logger common.Logger - dkgLock sync.RWMutex - dkgSigner map[uint64]*dkgShareSecret - gpk map[uint64]*DKGGroupPublicKey - dkgResult sync.RWMutex - tsig map[common.Hash]*tsigProtocol - tsigTouched map[common.Hash]struct{} - tsigReady *sync.Cond - // TODO(jimmy-dexon): add timeout to pending psig. - pendingPsig map[common.Hash][]*typesDKG.PartialSignature - prevHash common.Hash -} - -func newConfigurationChain( - ID types.NodeID, - recv dkgReceiver, - gov Governance, - logger common.Logger) *configurationChain { - return &configurationChain{ - ID: ID, - recv: recv, - gov: gov, - logger: logger, - dkgSigner: make(map[uint64]*dkgShareSecret), - gpk: make(map[uint64]*DKGGroupPublicKey), - tsig: make(map[common.Hash]*tsigProtocol), - tsigTouched: make(map[common.Hash]struct{}), - tsigReady: sync.NewCond(&sync.Mutex{}), - pendingPsig: make(map[common.Hash][]*typesDKG.PartialSignature), - } -} - -func (cc *configurationChain) registerDKG(round uint64, threshold int) { - cc.dkgLock.Lock() - defer cc.dkgLock.Unlock() - cc.dkg = newDKGProtocol( - cc.ID, - cc.recv, - round, - threshold) -} - -func (cc *configurationChain) runDKG(round uint64) error { - cc.dkgLock.Lock() - defer cc.dkgLock.Unlock() - if cc.dkg == nil || cc.dkg.round != round { - return ErrDKGNotRegistered - } - if func() bool { - cc.dkgResult.RLock() - defer cc.dkgResult.RUnlock() - _, exist := cc.gpk[round] - return exist - }() { - return nil - } - - ticker := newTicker(cc.gov, round, TickerDKG) - cc.dkgLock.Unlock() - <-ticker.Tick() - cc.dkgLock.Lock() - // Phase 2(T = 0): Exchange DKG secret key share. - cc.logger.Debug("Calling Governance.DKGMasterPublicKeys", "round", round) - cc.dkg.processMasterPublicKeys(cc.gov.DKGMasterPublicKeys(round)) - // Phase 3(T = 0~λ): Propose complaint. - // Propose complaint is done in `processMasterPublicKeys`. - cc.dkgLock.Unlock() - <-ticker.Tick() - cc.dkgLock.Lock() - // Phase 4(T = λ): Propose nack complaints. - cc.dkg.proposeNackComplaints() - cc.dkgLock.Unlock() - <-ticker.Tick() - cc.dkgLock.Lock() - // Phase 5(T = 2λ): Propose Anti nack complaint. - cc.logger.Debug("Calling Governance.DKGComplaints", "round", round) - cc.dkg.processNackComplaints(cc.gov.DKGComplaints(round)) - cc.dkgLock.Unlock() - <-ticker.Tick() - cc.dkgLock.Lock() - // Phase 6(T = 3λ): Rebroadcast anti nack complaint. - // Rebroadcast is done in `processPrivateShare`. - cc.dkgLock.Unlock() - <-ticker.Tick() - cc.dkgLock.Lock() - // Phase 7(T = 4λ): Enforce complaints and nack complaints. - cc.logger.Debug("Calling Governance.DKGComplaints", "round", round) - cc.dkg.enforceNackComplaints(cc.gov.DKGComplaints(round)) - // Enforce complaint is done in `processPrivateShare`. - // Phase 8(T = 5λ): DKG finalize. - cc.dkgLock.Unlock() - <-ticker.Tick() - cc.dkgLock.Lock() - cc.dkg.proposeFinalize() - // Phase 9(T = 6λ): DKG is ready. - cc.dkgLock.Unlock() - <-ticker.Tick() - cc.dkgLock.Lock() - // Normally, IsDKGFinal would return true here. Use this for in case of - // unexpected network fluctuation and ensure the robustness of DKG protocol. - cc.logger.Debug("Calling Governance.IsDKGFinal", "round", round) - for !cc.gov.IsDKGFinal(round) { - cc.logger.Info("DKG is not ready yet. Try again later...", - "nodeID", cc.ID) - time.Sleep(500 * time.Millisecond) - } - cc.logger.Debug("Calling Governance.DKGMasterPublicKeys", "round", round) - cc.logger.Debug("Calling Governance.DKGComplaints", "round", round) - gpk, err := NewDKGGroupPublicKey(round, - cc.gov.DKGMasterPublicKeys(round), - cc.gov.DKGComplaints(round), - cc.dkg.threshold) - if err != nil { - return err - } - signer, err := cc.dkg.recoverShareSecret(gpk.qualifyIDs) - if err != nil { - return err - } - qualifies := "" - for nID := range gpk.qualifyNodeIDs { - qualifies += fmt.Sprintf("%s ", nID.String()[:6]) - } - cc.logger.Info("Qualify Nodes", - "nodeID", cc.ID, - "round", round, - "count", len(gpk.qualifyIDs), - "qualifies", qualifies) - cc.dkgResult.Lock() - defer cc.dkgResult.Unlock() - cc.dkgSigner[round] = signer - cc.gpk[round] = gpk - return nil -} - -func (cc *configurationChain) preparePartialSignature( - round uint64, hash common.Hash) (*typesDKG.PartialSignature, error) { - signer, exist := func() (*dkgShareSecret, bool) { - cc.dkgResult.RLock() - defer cc.dkgResult.RUnlock() - signer, exist := cc.dkgSigner[round] - return signer, exist - }() - if !exist { - return nil, ErrDKGNotReady - } - return &typesDKG.PartialSignature{ - ProposerID: cc.ID, - Round: round, - Hash: hash, - PartialSignature: signer.sign(hash), - }, nil -} - -func (cc *configurationChain) touchTSigHash(hash common.Hash) (first bool) { - cc.tsigReady.L.Lock() - defer cc.tsigReady.L.Unlock() - _, exist := cc.tsigTouched[hash] - cc.tsigTouched[hash] = struct{}{} - return !exist -} - -func (cc *configurationChain) untouchTSigHash(hash common.Hash) { - cc.tsigReady.L.Lock() - defer cc.tsigReady.L.Unlock() - delete(cc.tsigTouched, hash) -} - -func (cc *configurationChain) runTSig( - round uint64, hash common.Hash) ( - crypto.Signature, error) { - gpk, exist := func() (*DKGGroupPublicKey, bool) { - cc.dkgResult.RLock() - defer cc.dkgResult.RUnlock() - gpk, exist := cc.gpk[round] - return gpk, exist - }() - if !exist { - return crypto.Signature{}, ErrDKGNotReady - } - cc.tsigReady.L.Lock() - defer cc.tsigReady.L.Unlock() - if _, exist := cc.tsig[hash]; exist { - return crypto.Signature{}, ErrTSigAlreadyRunning - } - cc.tsig[hash] = newTSigProtocol(gpk, hash) - pendingPsig := cc.pendingPsig[hash] - delete(cc.pendingPsig, hash) - go func() { - for _, psig := range pendingPsig { - if err := cc.processPartialSignature(psig); err != nil { - cc.logger.Error("failed to process partial signature", - "nodeID", cc.ID, - "error", err) - } - } - }() - var signature crypto.Signature - var err error - for func() bool { - signature, err = cc.tsig[hash].signature() - return err == ErrNotEnoughtPartialSignatures - }() { - // TODO(jimmy-dexon): add a timeout here. - cc.tsigReady.Wait() - } - delete(cc.tsig, hash) - if err != nil { - return crypto.Signature{}, err - } - return signature, nil -} - -func (cc *configurationChain) runBlockTSig( - round uint64, hash common.Hash) (crypto.Signature, error) { - sig, err := cc.runTSig(round, hash) - if err != nil { - return crypto.Signature{}, err - } - cc.logger.Info("Block TSIG", - "nodeID", cc.ID, - "round", round, - "signature", sig) - return sig, nil -} - -func (cc *configurationChain) runCRSTSig( - round uint64, crs common.Hash) ([]byte, error) { - sig, err := cc.runTSig(round, crs) - cc.logger.Info("CRS", - "nodeID", cc.ID, - "round", round+1, - "signature", sig) - return sig.Signature[:], err -} - -func (cc *configurationChain) processPrivateShare( - prvShare *typesDKG.PrivateShare) error { - cc.dkgLock.Lock() - defer cc.dkgLock.Unlock() - if cc.dkg == nil { - return nil - } - return cc.dkg.processPrivateShare(prvShare) -} - -func (cc *configurationChain) processPartialSignature( - psig *typesDKG.PartialSignature) error { - cc.tsigReady.L.Lock() - defer cc.tsigReady.L.Unlock() - if _, exist := cc.tsig[psig.Hash]; !exist { - ok, err := verifyDKGPartialSignatureSignature(psig) - if err != nil { - return err - } - if !ok { - return ErrIncorrectPartialSignatureSignature - } - cc.pendingPsig[psig.Hash] = append(cc.pendingPsig[psig.Hash], psig) - return nil - } - if err := cc.tsig[psig.Hash].processPartialSignature(psig); err != nil { - return err - } - cc.tsigReady.Broadcast() - return nil -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus-timestamp.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus-timestamp.go deleted file mode 100644 index 9750a74c3..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus-timestamp.go +++ /dev/null @@ -1,139 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "errors" - "time" - - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// consensusTimestamp is for Concensus Timestamp Algorithm. -type consensusTimestamp struct { - chainTimestamps []time.Time - - // This part keeps configs for each round. - numChainsOfRounds []uint32 - numChainsBase uint64 - - // dMoment represents the genesis time. - dMoment time.Time - // lastTimestamp represents previous assigned consensus timestamp. - lastTimestamp time.Time -} - -var ( - // ErrTimestampNotIncrease would be reported if the timestamp is not strickly - // increasing on the same chain. - ErrTimestampNotIncrease = errors.New("timestamp is not increasing") - // ErrNoRoundConfig for no round config found. - ErrNoRoundConfig = errors.New("no round config found") - // ErrConsensusTimestampRewind would be reported if the generated timestamp - // is rewinded. - ErrConsensusTimestampRewind = errors.New("consensus timestamp rewind") -) - -// newConsensusTimestamp creates timestamper object. -func newConsensusTimestamp( - dMoment time.Time, round uint64, numChains uint32) *consensusTimestamp { - ts := make([]time.Time, 0, numChains) - for i := uint32(0); i < numChains; i++ { - ts = append(ts, dMoment) - } - return &consensusTimestamp{ - numChainsOfRounds: []uint32{numChains}, - numChainsBase: round, - dMoment: dMoment, - chainTimestamps: ts, - } -} - -// appendConfig appends a configuration for upcoming round. When you append -// a config for round R, next time you can only append the config for round R+1. -func (ct *consensusTimestamp) appendConfig( - round uint64, config *types.Config) error { - - if round != uint64(len(ct.numChainsOfRounds))+ct.numChainsBase { - return ErrRoundNotIncreasing - } - ct.numChainsOfRounds = append(ct.numChainsOfRounds, config.NumChains) - return nil -} - -func (ct *consensusTimestamp) resizeChainTimetamps(numChain uint32) { - l := uint32(len(ct.chainTimestamps)) - if numChain > l { - for i := l; i < numChain; i++ { - ct.chainTimestamps = append(ct.chainTimestamps, ct.dMoment) - } - } else if numChain < l { - ct.chainTimestamps = ct.chainTimestamps[:numChain] - } -} - -// ProcessBlocks is the entry function. -func (ct *consensusTimestamp) processBlocks(blocks []*types.Block) (err error) { - for _, block := range blocks { - // Rounds might interleave within rounds if no configuration change - // occurs. And it is limited to one round, that is, round r can only - // interleave with r-1 and r+1. - round := block.Position.Round - if ct.numChainsBase == round || ct.numChainsBase+1 == round { - // Normal case, no need to modify chainTimestamps. - } else if ct.numChainsBase+2 == round { - if len(ct.numChainsOfRounds) < 2 { - return ErrNoRoundConfig - } - ct.numChainsBase++ - ct.numChainsOfRounds = ct.numChainsOfRounds[1:] - if ct.numChainsOfRounds[0] > ct.numChainsOfRounds[1] { - ct.resizeChainTimetamps(ct.numChainsOfRounds[0]) - } else { - ct.resizeChainTimetamps(ct.numChainsOfRounds[1]) - } - } else { - // Error if round < base or round > base + 2. - return ErrInvalidRoundID - } - ts := ct.chainTimestamps[:ct.numChainsOfRounds[round-ct.numChainsBase]] - if block.Finalization.Timestamp, err = getMedianTime(ts); err != nil { - return - } - if block.Timestamp.Before(ct.chainTimestamps[block.Position.ChainID]) { - return ErrTimestampNotIncrease - } - ct.chainTimestamps[block.Position.ChainID] = block.Timestamp - if block.Finalization.Timestamp.Before(ct.lastTimestamp) { - block.Finalization.Timestamp = ct.lastTimestamp - } else { - ct.lastTimestamp = block.Finalization.Timestamp - } - } - return -} - -func (ct *consensusTimestamp) isSynced() bool { - numChain := ct.numChainsOfRounds[0] - for i := uint32(0); i < numChain; i++ { - if ct.chainTimestamps[i].Equal(ct.dMoment) { - return false - } - } - return true -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus.go deleted file mode 100644 index 7e6934f45..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/consensus.go +++ /dev/null @@ -1,1026 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "context" - "encoding/hex" - "fmt" - "sync" - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/blockdb" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" - typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg" -) - -// Errors for consensus core. -var ( - ErrProposerNotInNodeSet = fmt.Errorf( - "proposer is not in node set") - ErrIncorrectHash = fmt.Errorf( - "hash of block is incorrect") - ErrIncorrectSignature = fmt.Errorf( - "signature of block is incorrect") - ErrGenesisBlockNotEmpty = fmt.Errorf( - "genesis block should be empty") - ErrUnknownBlockProposed = fmt.Errorf( - "unknown block is proposed") - ErrIncorrectAgreementResultPosition = fmt.Errorf( - "incorrect agreement result position") - ErrNotEnoughVotes = fmt.Errorf( - "not enought votes") - ErrIncorrectVoteBlockHash = fmt.Errorf( - "incorrect vote block hash") - ErrIncorrectVoteType = fmt.Errorf( - "incorrect vote type") - ErrIncorrectVotePosition = fmt.Errorf( - "incorrect vote position") - ErrIncorrectVoteProposer = fmt.Errorf( - "incorrect vote proposer") - ErrIncorrectBlockRandomnessResult = fmt.Errorf( - "incorrect block randomness result") -) - -// consensusBAReceiver implements agreementReceiver. -type consensusBAReceiver struct { - // TODO(mission): consensus would be replaced by lattice and network. - consensus *Consensus - agreementModule *agreement - chainID uint32 - changeNotaryTime time.Time - round uint64 - restartNotary chan bool -} - -func (recv *consensusBAReceiver) ProposeVote(vote *types.Vote) { - go func() { - if err := recv.agreementModule.prepareVote(vote); err != nil { - recv.consensus.logger.Error("Failed to prepare vote", "error", err) - return - } - if err := recv.agreementModule.processVote(vote); err != nil { - recv.consensus.logger.Error("Failed to process vote", "error", err) - return - } - recv.consensus.logger.Debug("Calling Network.BroadcastVote", - "vote", vote) - recv.consensus.network.BroadcastVote(vote) - }() -} - -func (recv *consensusBAReceiver) ProposeBlock() common.Hash { - block := recv.consensus.proposeBlock(recv.chainID, recv.round) - if block == nil { - recv.consensus.logger.Error("unable to propose block") - return nullBlockHash - } - if err := recv.consensus.preProcessBlock(block); err != nil { - recv.consensus.logger.Error("Failed to pre-process block", "error", err) - return common.Hash{} - } - recv.consensus.logger.Debug("Calling Network.BroadcastBlock", "block", block) - recv.consensus.network.BroadcastBlock(block) - return block.Hash -} - -func (recv *consensusBAReceiver) ConfirmBlock( - hash common.Hash, votes map[types.NodeID]*types.Vote) { - var block *types.Block - if (hash == common.Hash{}) { - recv.consensus.logger.Info("Empty block is confirmed", - "position", recv.agreementModule.agreementID()) - var err error - block, err = recv.consensus.proposeEmptyBlock(recv.chainID) - if err != nil { - recv.consensus.logger.Error("Propose empty block failed", "error", err) - return - } - } else { - var exist bool - block, exist = recv.consensus.baModules[recv.chainID]. - findCandidateBlockNoLock(hash) - if !exist { - recv.consensus.logger.Error("Unknown block confirmed", - "hash", hash, - "chainID", recv.chainID) - ch := make(chan *types.Block) - func() { - recv.consensus.lock.Lock() - defer recv.consensus.lock.Unlock() - recv.consensus.baConfirmedBlock[hash] = ch - }() - recv.consensus.network.PullBlocks(common.Hashes{hash}) - go func() { - block = <-ch - recv.consensus.logger.Info("Receive unknown block", - "hash", hash, - "chainID", recv.chainID) - recv.agreementModule.addCandidateBlock(block) - recv.ConfirmBlock(block.Hash, votes) - }() - return - } - } - recv.consensus.ccModule.registerBlock(block) - voteList := make([]types.Vote, 0, len(votes)) - for _, vote := range votes { - if vote.BlockHash != hash { - continue - } - voteList = append(voteList, *vote) - } - result := &types.AgreementResult{ - BlockHash: block.Hash, - Position: block.Position, - Votes: voteList, - } - recv.consensus.logger.Debug("Calling Network.BroadcastAgreementResult", - "result", result) - recv.consensus.network.BroadcastAgreementResult(result) - if err := recv.consensus.processBlock(block); err != nil { - recv.consensus.logger.Error("Failed to process block", "error", err) - return - } - if block.Timestamp.After(recv.changeNotaryTime) { - recv.round++ - recv.restartNotary <- true - } else { - recv.restartNotary <- false - } -} - -func (recv *consensusBAReceiver) PullBlocks(hashes common.Hashes) { - recv.consensus.logger.Debug("Calling Network.PullBlocks", "hashes", hashes) - recv.consensus.network.PullBlocks(hashes) -} - -// consensusDKGReceiver implements dkgReceiver. -type consensusDKGReceiver struct { - ID types.NodeID - gov Governance - authModule *Authenticator - nodeSetCache *NodeSetCache - cfgModule *configurationChain - network Network - logger common.Logger -} - -// ProposeDKGComplaint proposes a DKGComplaint. -func (recv *consensusDKGReceiver) ProposeDKGComplaint( - complaint *typesDKG.Complaint) { - if err := recv.authModule.SignDKGComplaint(complaint); err != nil { - recv.logger.Error("Failed to sign DKG complaint", "error", err) - return - } - recv.logger.Debug("Calling Governace.AddDKGComplaint", - "complaint", complaint) - recv.gov.AddDKGComplaint(complaint.Round, complaint) -} - -// ProposeDKGMasterPublicKey propose a DKGMasterPublicKey. -func (recv *consensusDKGReceiver) ProposeDKGMasterPublicKey( - mpk *typesDKG.MasterPublicKey) { - if err := recv.authModule.SignDKGMasterPublicKey(mpk); err != nil { - recv.logger.Error("Failed to sign DKG master public key", "error", err) - return - } - recv.logger.Debug("Calling Governance.AddDKGMasterPublicKey", "key", mpk) - recv.gov.AddDKGMasterPublicKey(mpk.Round, mpk) -} - -// ProposeDKGPrivateShare propose a DKGPrivateShare. -func (recv *consensusDKGReceiver) ProposeDKGPrivateShare( - prv *typesDKG.PrivateShare) { - if err := recv.authModule.SignDKGPrivateShare(prv); err != nil { - recv.logger.Error("Failed to sign DKG private share", "error", err) - return - } - receiverPubKey, exists := recv.nodeSetCache.GetPublicKey(prv.ReceiverID) - if !exists { - recv.logger.Error("Public key for receiver not found", - "receiver", prv.ReceiverID.String()[:6]) - return - } - if prv.ReceiverID == recv.ID { - go func() { - if err := recv.cfgModule.processPrivateShare(prv); err != nil { - recv.logger.Error("Failed to process self private share", "prvShare", prv) - } - }() - } else { - recv.logger.Debug("Calling Network.SendDKGPrivateShare", - "receiver", hex.EncodeToString(receiverPubKey.Bytes())) - recv.network.SendDKGPrivateShare(receiverPubKey, prv) - } -} - -// ProposeDKGAntiNackComplaint propose a DKGPrivateShare as an anti complaint. -func (recv *consensusDKGReceiver) ProposeDKGAntiNackComplaint( - prv *typesDKG.PrivateShare) { - if prv.ProposerID == recv.ID { - if err := recv.authModule.SignDKGPrivateShare(prv); err != nil { - recv.logger.Error("Failed sign DKG private share", "error", err) - return - } - } - recv.logger.Debug("Calling Network.BroadcastDKGPrivateShare", "share", prv) - recv.network.BroadcastDKGPrivateShare(prv) -} - -// ProposeDKGFinalize propose a DKGFinalize message. -func (recv *consensusDKGReceiver) ProposeDKGFinalize(final *typesDKG.Finalize) { - if err := recv.authModule.SignDKGFinalize(final); err != nil { - recv.logger.Error("Faield to sign DKG finalize", "error", err) - return - } - recv.logger.Debug("Calling Governance.AddDKGFinalize", "final", final) - recv.gov.AddDKGFinalize(final.Round, final) -} - -// Consensus implements DEXON Consensus algorithm. -type Consensus struct { - // Node Info. - ID types.NodeID - authModule *Authenticator - currentConfig *types.Config - - // BA. - baModules []*agreement - receivers []*consensusBAReceiver - baConfirmedBlock map[common.Hash]chan<- *types.Block - - // DKG. - dkgRunning int32 - dkgReady *sync.Cond - cfgModule *configurationChain - - // Dexon consensus v1's modules. - lattice *Lattice - ccModule *compactionChain - - // Interfaces. - db blockdb.BlockDatabase - app Application - gov Governance - network Network - tickerObj Ticker - - // Misc. - dMoment time.Time - nodeSetCache *NodeSetCache - round uint64 - roundToNotify uint64 - lock sync.RWMutex - ctx context.Context - ctxCancel context.CancelFunc - event *common.Event - logger common.Logger -} - -// NewConsensus construct an Consensus instance. -func NewConsensus( - dMoment time.Time, - app Application, - gov Governance, - db blockdb.BlockDatabase, - network Network, - prv crypto.PrivateKey, - logger common.Logger) *Consensus { - - // TODO(w): load latest blockHeight from DB, and use config at that height. - var ( - round uint64 - // round 0 and 1 are decided at beginning. - roundToNotify = round + 2 - ) - logger.Debug("Calling Governance.Configuration", "round", round) - config := gov.Configuration(round) - nodeSetCache := NewNodeSetCache(gov) - logger.Debug("Calling Governance.CRS", "round", round) - crs := gov.CRS(round) - // Setup acking by information returned from Governace. - nodes, err := nodeSetCache.GetNodeSet(round) - if err != nil { - panic(err) - } - // Setup auth module. - authModule := NewAuthenticator(prv) - // Check if the application implement Debug interface. - debugApp, _ := app.(Debug) - // Init lattice. - lattice := NewLattice( - dMoment, config, authModule, app, debugApp, db, logger) - // Init configuration chain. - ID := types.NewNodeID(prv.PublicKey()) - recv := &consensusDKGReceiver{ - ID: ID, - gov: gov, - authModule: authModule, - nodeSetCache: nodeSetCache, - network: network, - logger: logger, - } - cfgModule := newConfigurationChain( - ID, - recv, - gov, - logger) - recv.cfgModule = cfgModule - // Construct Consensus instance. - con := &Consensus{ - ID: ID, - currentConfig: config, - ccModule: newCompactionChain(gov), - lattice: lattice, - app: app, - gov: gov, - db: db, - network: network, - tickerObj: newTicker(gov, round, TickerBA), - baConfirmedBlock: make(map[common.Hash]chan<- *types.Block), - dkgReady: sync.NewCond(&sync.Mutex{}), - cfgModule: cfgModule, - dMoment: dMoment, - nodeSetCache: nodeSetCache, - authModule: authModule, - event: common.NewEvent(), - logger: logger, - roundToNotify: roundToNotify, - } - - validLeader := func(block *types.Block) bool { - return lattice.SanityCheck(block) == nil - } - - con.baModules = make([]*agreement, config.NumChains) - con.receivers = make([]*consensusBAReceiver, config.NumChains) - for i := uint32(0); i < config.NumChains; i++ { - chainID := i - recv := &consensusBAReceiver{ - consensus: con, - chainID: chainID, - restartNotary: make(chan bool, 1), - } - agreementModule := newAgreement( - con.ID, - recv, - nodes.IDs, - newLeaderSelector(crs, validLeader), - con.authModule, - ) - // Hacky way to make agreement module self contained. - recv.agreementModule = agreementModule - recv.changeNotaryTime = dMoment - con.baModules[chainID] = agreementModule - con.receivers[chainID] = recv - } - return con -} - -// Run starts running DEXON Consensus. -func (con *Consensus) Run(initBlock *types.Block) { - // Setup context. - con.ctx, con.ctxCancel = context.WithCancel(context.Background()) - con.ccModule.init(initBlock) - // TODO(jimmy-dexon): change AppendConfig to add config for specific round. - for i := uint64(0); i < initBlock.Position.Round; i++ { - con.logger.Debug("Calling Governance.Configuration", "round", i+1) - cfg := con.gov.Configuration(i + 1) - if err := con.lattice.AppendConfig(i+1, cfg); err != nil { - panic(err) - } - } - con.logger.Debug("Calling Network.ReceiveChan") - go con.processMsg(con.network.ReceiveChan()) - // Sleep until dMoment come. - time.Sleep(con.dMoment.Sub(time.Now().UTC())) - con.cfgModule.registerDKG(con.round, int(con.currentConfig.DKGSetSize)/3+1) - con.event.RegisterTime(con.dMoment.Add(con.currentConfig.RoundInterval/4), - func(time.Time) { - con.runDKGTSIG(con.round) - }) - round1 := uint64(1) - con.logger.Debug("Calling Governance.Configuration", "round", round1) - con.lattice.AppendConfig(round1, con.gov.Configuration(round1)) - con.initialRound(con.dMoment) - ticks := make([]chan struct{}, 0, con.currentConfig.NumChains) - for i := uint32(0); i < con.currentConfig.NumChains; i++ { - tick := make(chan struct{}) - ticks = append(ticks, tick) - go con.runBA(i, tick) - } - - // Reset ticker. - <-con.tickerObj.Tick() - <-con.tickerObj.Tick() - for { - <-con.tickerObj.Tick() - for _, tick := range ticks { - go func(tick chan struct{}) { tick <- struct{}{} }(tick) - } - } -} - -func (con *Consensus) runBA(chainID uint32, tick <-chan struct{}) { - // TODO(jimmy-dexon): move this function inside agreement. - agreement := con.baModules[chainID] - recv := con.receivers[chainID] - recv.restartNotary <- true - nIDs := make(map[types.NodeID]struct{}) - // Reset ticker - <-tick -BALoop: - for { - select { - case <-con.ctx.Done(): - break BALoop - default: - } - select { - case newNotary := <-recv.restartNotary: - if newNotary { - recv.changeNotaryTime = - recv.changeNotaryTime.Add(con.currentConfig.RoundInterval) - nodes, err := con.nodeSetCache.GetNodeSet(recv.round) - if err != nil { - panic(err) - } - con.logger.Debug("Calling Governance.Configuration", - "round", recv.round) - con.logger.Debug("Calling Governance.CRS", "round", recv.round) - nIDs = nodes.GetSubSet( - int(con.gov.Configuration(recv.round).NotarySetSize), - types.NewNotarySetTarget(con.gov.CRS(recv.round), chainID)) - } - nextPos := con.lattice.NextPosition(chainID) - nextPos.Round = recv.round - agreement.restart(nIDs, nextPos) - default: - } - if agreement.pullVotes() { - pos := agreement.agreementID() - con.logger.Debug("Calling Network.PullVotes for syncing votes", - "position", pos) - con.network.PullVotes(pos) - } - err := agreement.nextState() - if err != nil { - con.logger.Error("Failed to proceed to next state", - "nodeID", con.ID.String(), - "error", err) - break BALoop - } - for i := 0; i < agreement.clocks(); i++ { - // Priority select for agreement.done(). - select { - case <-agreement.done(): - continue BALoop - default: - } - select { - case <-agreement.done(): - continue BALoop - case <-tick: - } - } - } -} - -// runDKGTSIG starts running DKG+TSIG protocol. -func (con *Consensus) runDKGTSIG(round uint64) { - con.dkgReady.L.Lock() - defer con.dkgReady.L.Unlock() - if con.dkgRunning != 0 { - return - } - con.dkgRunning = 1 - go func() { - startTime := time.Now().UTC() - defer func() { - con.dkgReady.L.Lock() - defer con.dkgReady.L.Unlock() - con.dkgReady.Broadcast() - con.dkgRunning = 2 - DKGTime := time.Now().Sub(startTime) - if DKGTime.Nanoseconds() >= - con.currentConfig.RoundInterval.Nanoseconds()/2 { - con.logger.Warn("Your computer cannot finish DKG on time!", - "nodeID", con.ID.String()) - } - }() - if err := con.cfgModule.runDKG(round); err != nil { - panic(err) - } - nodes, err := con.nodeSetCache.GetNodeSet(round) - if err != nil { - panic(err) - } - con.logger.Debug("Calling Governance.Configuration", "round", round) - hash := HashConfigurationBlock( - nodes.IDs, - con.gov.Configuration(round), - common.Hash{}, - con.cfgModule.prevHash) - psig, err := con.cfgModule.preparePartialSignature( - round, hash) - if err != nil { - panic(err) - } - if err = con.authModule.SignDKGPartialSignature(psig); err != nil { - panic(err) - } - if err = con.cfgModule.processPartialSignature(psig); err != nil { - panic(err) - } - con.logger.Debug("Calling Network.BroadcastDKGPartialSignature", - "proposer", psig.ProposerID, - "round", psig.Round, - "hash", psig.Hash) - con.network.BroadcastDKGPartialSignature(psig) - if _, err = con.cfgModule.runBlockTSig(round, hash); err != nil { - panic(err) - } - }() -} - -func (con *Consensus) runCRS() { - // Start running next round CRS. - con.logger.Debug("Calling Governance.CRS", "round", con.round) - psig, err := con.cfgModule.preparePartialSignature( - con.round, con.gov.CRS(con.round)) - if err != nil { - con.logger.Error("Failed to prepare partial signature", "error", err) - } else if err = con.authModule.SignDKGPartialSignature(psig); err != nil { - con.logger.Error("Failed to sign DKG partial signature", "error", err) - } else if err = con.cfgModule.processPartialSignature(psig); err != nil { - con.logger.Error("Failed to process partial signature", "error", err) - } else { - con.logger.Debug("Calling Network.BroadcastDKGPartialSignature", - "proposer", psig.ProposerID, - "round", psig.Round, - "hash", psig.Hash) - con.network.BroadcastDKGPartialSignature(psig) - con.logger.Debug("Calling Governance.CRS", "round", con.round) - crs, err := con.cfgModule.runCRSTSig(con.round, con.gov.CRS(con.round)) - if err != nil { - con.logger.Error("Failed to run CRS Tsig", "error", err) - } else { - con.logger.Debug("Calling Governance.ProposeCRS", - "round", con.round+1, - "crs", hex.EncodeToString(crs)) - con.gov.ProposeCRS(con.round+1, crs) - } - } -} - -func (con *Consensus) initialRound(startTime time.Time) { - select { - case <-con.ctx.Done(): - return - default: - } - con.logger.Debug("Calling Governance.Configuration", "round", con.round) - con.currentConfig = con.gov.Configuration(con.round) - - con.event.RegisterTime(startTime.Add(con.currentConfig.RoundInterval/2), - func(time.Time) { - go func() { - con.runCRS() - ticker := newTicker(con.gov, con.round, TickerDKG) - <-ticker.Tick() - // Normally, gov.CRS would return non-nil. Use this for in case of - // unexpected network fluctuation and ensure the robustness. - for (con.gov.CRS(con.round+1) == common.Hash{}) { - con.logger.Info("CRS is not ready yet. Try again later...", - "nodeID", con.ID) - time.Sleep(500 * time.Millisecond) - } - con.cfgModule.registerDKG( - con.round+1, int(con.currentConfig.DKGSetSize/3)+1) - }() - }) - con.event.RegisterTime(startTime.Add(con.currentConfig.RoundInterval*2/3), - func(time.Time) { - func() { - con.dkgReady.L.Lock() - defer con.dkgReady.L.Unlock() - con.dkgRunning = 0 - }() - con.runDKGTSIG(con.round + 1) - }) - con.event.RegisterTime(startTime.Add(con.currentConfig.RoundInterval), - func(time.Time) { - // Change round. - con.round++ - con.logger.Debug("Calling Governance.Configuration", - "round", con.round+1) - con.lattice.AppendConfig(con.round+1, con.gov.Configuration(con.round+1)) - con.initialRound(startTime.Add(con.currentConfig.RoundInterval)) - }) -} - -// Stop the Consensus core. -func (con *Consensus) Stop() { - for _, a := range con.baModules { - a.stop() - } - con.event.Reset() - con.ctxCancel() -} - -func (con *Consensus) processMsg(msgChan <-chan interface{}) { -MessageLoop: - for { - var msg interface{} - select { - case msg = <-msgChan: - case <-con.ctx.Done(): - return - } - - switch val := msg.(type) { - case *types.Block: - if ch, exist := func() (chan<- *types.Block, bool) { - con.lock.RLock() - defer con.lock.RUnlock() - ch, e := con.baConfirmedBlock[val.Hash] - return ch, e - }(); exist { - if err := con.lattice.SanityCheck(val); err != nil { - if err == ErrRetrySanityCheckLater { - err = nil - } else { - con.logger.Error("SanityCheck failed", "error", err) - continue MessageLoop - } - } - func() { - con.lock.Lock() - defer con.lock.Unlock() - // In case of multiple delivered block. - if _, exist := con.baConfirmedBlock[val.Hash]; !exist { - return - } - delete(con.baConfirmedBlock, val.Hash) - ch <- val - }() - } else if val.IsFinalized() { - // For sync mode. - if err := con.processFinalizedBlock(val); err != nil { - con.logger.Error("Failed to process finalized block", - "error", err) - } - } else { - if err := con.preProcessBlock(val); err != nil { - con.logger.Error("Failed to pre process block", - "error", err) - } - } - case *types.Vote: - if err := con.ProcessVote(val); err != nil { - con.logger.Error("Failed to process vote", - "error", err) - } - case *types.AgreementResult: - if err := con.ProcessAgreementResult(val); err != nil { - con.logger.Error("Failed to process agreement result", - "error", err) - } - case *types.BlockRandomnessResult: - if err := con.ProcessBlockRandomnessResult(val); err != nil { - con.logger.Error("Failed to process block randomness result", - "error", err) - } - case *typesDKG.PrivateShare: - if err := con.cfgModule.processPrivateShare(val); err != nil { - con.logger.Error("Failed to process private share", - "error", err) - } - - case *typesDKG.PartialSignature: - if err := con.cfgModule.processPartialSignature(val); err != nil { - con.logger.Error("Failed to process partial signature", - "error", err) - } - } - } -} - -func (con *Consensus) proposeBlock(chainID uint32, round uint64) *types.Block { - block := &types.Block{ - Position: types.Position{ - ChainID: chainID, - Round: round, - }, - } - if err := con.prepareBlock(block, time.Now().UTC()); err != nil { - con.logger.Error("Failed to prepare block", "error", err) - return nil - } - return block -} - -func (con *Consensus) proposeEmptyBlock( - chainID uint32) (*types.Block, error) { - block := &types.Block{ - Position: types.Position{ - ChainID: chainID, - }, - } - if err := con.lattice.PrepareEmptyBlock(block); err != nil { - return nil, err - } - return block, nil -} - -// ProcessVote is the entry point to submit ont vote to a Consensus instance. -func (con *Consensus) ProcessVote(vote *types.Vote) (err error) { - v := vote.Clone() - err = con.baModules[v.Position.ChainID].processVote(v) - return err -} - -// ProcessAgreementResult processes the randomness request. -func (con *Consensus) ProcessAgreementResult( - rand *types.AgreementResult) error { - // Sanity Check. - notarySet, err := con.nodeSetCache.GetNotarySet( - rand.Position.Round, rand.Position.ChainID) - if err != nil { - return err - } - if len(rand.Votes) < len(notarySet)/3*2+1 { - return ErrNotEnoughVotes - } - if len(rand.Votes) > len(notarySet) { - return ErrIncorrectVoteProposer - } - for _, vote := range rand.Votes { - if vote.BlockHash != rand.BlockHash { - return ErrIncorrectVoteBlockHash - } - if vote.Type != types.VoteCom { - return ErrIncorrectVoteType - } - if vote.Position != rand.Position { - return ErrIncorrectVotePosition - } - if _, exist := notarySet[vote.ProposerID]; !exist { - return ErrIncorrectVoteProposer - } - ok, err := verifyVoteSignature(&vote) - if err != nil { - return err - } - if !ok { - return ErrIncorrectVoteSignature - } - } - // Syncing BA Module. - agreement := con.baModules[rand.Position.ChainID] - aID := agreement.agreementID() - if rand.Position.Newer(&aID) { - con.logger.Info("Syncing BA", "position", rand.Position) - nodes, err := con.nodeSetCache.GetNodeSet(rand.Position.Round) - if err != nil { - return err - } - con.logger.Debug("Calling Network.PullBlocks for syncing BA", - "hash", rand.BlockHash) - con.network.PullBlocks(common.Hashes{rand.BlockHash}) - nIDs := nodes.GetSubSet( - int(con.gov.Configuration(rand.Position.Round).NotarySetSize), - types.NewNotarySetTarget( - con.gov.CRS(rand.Position.Round), rand.Position.ChainID)) - for _, vote := range rand.Votes { - agreement.processVote(&vote) - } - agreement.restart(nIDs, rand.Position) - } - // Calculating randomness. - if rand.Position.Round == 0 { - return nil - } - if !con.ccModule.blockRegistered(rand.BlockHash) { - return nil - } - if DiffUint64(con.round, rand.Position.Round) > 1 { - return nil - } - // Sanity check done. - if !con.cfgModule.touchTSigHash(rand.BlockHash) { - return nil - } - con.logger.Debug("Calling Network.BroadcastAgreementResult", "result", rand) - con.network.BroadcastAgreementResult(rand) - dkgSet, err := con.nodeSetCache.GetDKGSet(rand.Position.Round) - if err != nil { - return err - } - if _, exist := dkgSet[con.ID]; !exist { - return nil - } - psig, err := con.cfgModule.preparePartialSignature(rand.Position.Round, rand.BlockHash) - if err != nil { - return err - } - if err = con.authModule.SignDKGPartialSignature(psig); err != nil { - return err - } - if err = con.cfgModule.processPartialSignature(psig); err != nil { - return err - } - con.logger.Debug("Calling Network.BroadcastDKGPartialSignature", - "proposer", psig.ProposerID, - "round", psig.Round, - "hash", psig.Hash) - con.network.BroadcastDKGPartialSignature(psig) - go func() { - tsig, err := con.cfgModule.runTSig(rand.Position.Round, rand.BlockHash) - if err != nil { - if err != ErrTSigAlreadyRunning { - con.logger.Error("Faield to run TSIG", "error", err) - } - return - } - result := &types.BlockRandomnessResult{ - BlockHash: rand.BlockHash, - Position: rand.Position, - Randomness: tsig.Signature, - } - if err := con.ProcessBlockRandomnessResult(result); err != nil { - con.logger.Error("Failed to process randomness result", - "error", err) - return - } - }() - return nil -} - -// ProcessBlockRandomnessResult processes the randomness result. -func (con *Consensus) ProcessBlockRandomnessResult( - rand *types.BlockRandomnessResult) error { - if rand.Position.Round == 0 { - return nil - } - if !con.ccModule.blockRegistered(rand.BlockHash) { - return nil - } - round := rand.Position.Round - v, ok, err := con.ccModule.tsigVerifier.UpdateAndGet(round) - if err != nil { - return err - } - if !ok { - return nil - } - if !v.VerifySignature( - rand.BlockHash, crypto.Signature{Signature: rand.Randomness}) { - return ErrIncorrectBlockRandomnessResult - } - con.logger.Debug("Calling Network.BroadcastRandomnessResult", - "hash", rand.BlockHash, - "position", rand.Position, - "randomness", hex.EncodeToString(rand.Randomness)) - con.network.BroadcastRandomnessResult(rand) - if err := con.ccModule.processBlockRandomnessResult(rand); err != nil { - if err != ErrBlockNotRegistered { - return err - } - } - return nil -} - -// preProcessBlock performs Byzantine Agreement on the block. -func (con *Consensus) preProcessBlock(b *types.Block) (err error) { - if err = con.lattice.SanityCheck(b); err != nil { - if err != ErrRetrySanityCheckLater { - return - } - } - if err = con.baModules[b.Position.ChainID].processBlock(b); err != nil { - return err - } - return -} - -// deliverBlock deliver a block to application layer. -func (con *Consensus) deliverBlock(b *types.Block) { - // TODO(mission): clone types.FinalizationResult - con.logger.Debug("Calling Application.BlockDelivered", "block", b) - con.app.BlockDelivered(b.Hash, b.Finalization) - if b.Position.Round+2 == con.roundToNotify { - // Only the first block delivered of that round would - // trigger this noitification. - con.gov.NotifyRoundHeight( - con.roundToNotify, b.Finalization.Height) - con.roundToNotify++ - } -} - -// processBlock is the entry point to submit one block to a Consensus instance. -func (con *Consensus) processBlock(block *types.Block) (err error) { - if err = con.db.Put(*block); err != nil && err != blockdb.ErrBlockExists { - return - } - con.lock.Lock() - defer con.lock.Unlock() - // Block processed by lattice can be out-of-order. But the output of lattice - // (deliveredBlocks) cannot. - deliveredBlocks, err := con.lattice.ProcessBlock(block) - if err != nil { - return - } - // Pass delivered blocks to compaction chain. - for _, b := range deliveredBlocks { - if err = con.ccModule.processBlock(b); err != nil { - return - } - go con.event.NotifyTime(b.Finalization.Timestamp) - } - deliveredBlocks = con.ccModule.extractBlocks() - for _, b := range deliveredBlocks { - if err = con.db.Update(*b); err != nil { - panic(err) - } - con.cfgModule.untouchTSigHash(b.Hash) - con.deliverBlock(b) - } - if err = con.lattice.PurgeBlocks(deliveredBlocks); err != nil { - return - } - return -} - -// processFinalizedBlock is the entry point for syncing blocks. -func (con *Consensus) processFinalizedBlock(block *types.Block) (err error) { - if err = con.lattice.SanityCheck(block); err != nil { - return - } - con.ccModule.processFinalizedBlock(block) - for { - confirmed := con.ccModule.extractFinalizedBlocks() - if len(confirmed) == 0 { - break - } - if err = con.lattice.ctModule.processBlocks(confirmed); err != nil { - return - } - for _, b := range confirmed { - if err = con.db.Put(*b); err != nil { - if err != blockdb.ErrBlockExists { - return - } - err = nil - } - con.deliverBlock(b) - } - } - return -} - -// PrepareBlock would setup header fields of block based on its ProposerID. -func (con *Consensus) prepareBlock(b *types.Block, - proposeTime time.Time) (err error) { - if err = con.lattice.PrepareBlock(b, proposeTime); err != nil { - return - } - // TODO(mission): decide CRS by block's round, which could be determined by - // block's info (ex. position, timestamp). - con.logger.Debug("Calling Governance.CRS", "round", 0) - if err = con.authModule.SignCRS(b, con.gov.CRS(0)); err != nil { - return - } - return -} - -// PrepareGenesisBlock would setup header fields for genesis block. -func (con *Consensus) PrepareGenesisBlock(b *types.Block, - proposeTime time.Time) (err error) { - if err = con.prepareBlock(b, proposeTime); err != nil { - return - } - if len(b.Payload) != 0 { - err = ErrGenesisBlockNotEmpty - return - } - return -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto.go deleted file mode 100644 index 2b7f7a7fc..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto.go +++ /dev/null @@ -1,264 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "encoding/binary" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" - typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg" -) - -func hashWitness(witness *types.Witness) (common.Hash, error) { - binaryHeight := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryHeight, witness.Height) - return crypto.Keccak256Hash( - binaryHeight, - witness.Data), nil -} - -func hashBlock(block *types.Block) (common.Hash, error) { - hashPosition := hashPosition(block.Position) - // Handling Block.Acks. - binaryAcks := make([][]byte, len(block.Acks)) - for idx, ack := range block.Acks { - binaryAcks[idx] = ack[:] - } - hashAcks := crypto.Keccak256Hash(binaryAcks...) - binaryTimestamp, err := block.Timestamp.UTC().MarshalBinary() - if err != nil { - return common.Hash{}, err - } - binaryWitness, err := hashWitness(&block.Witness) - if err != nil { - return common.Hash{}, err - } - - hash := crypto.Keccak256Hash( - block.ProposerID.Hash[:], - block.ParentHash[:], - hashPosition[:], - hashAcks[:], - binaryTimestamp[:], - block.PayloadHash[:], - binaryWitness[:]) - return hash, nil -} - -func verifyBlockSignature(pubkey crypto.PublicKey, - block *types.Block, sig crypto.Signature) (bool, error) { - hash, err := hashBlock(block) - if err != nil { - return false, err - } - return pubkey.VerifySignature(hash, sig), nil -} - -func hashVote(vote *types.Vote) common.Hash { - binaryPeriod := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryPeriod, vote.Period) - - hashPosition := hashPosition(vote.Position) - - hash := crypto.Keccak256Hash( - vote.ProposerID.Hash[:], - vote.BlockHash[:], - binaryPeriod, - hashPosition[:], - []byte{byte(vote.Type)}, - ) - return hash -} - -func verifyVoteSignature(vote *types.Vote) (bool, error) { - hash := hashVote(vote) - pubKey, err := crypto.SigToPub(hash, vote.Signature) - if err != nil { - return false, err - } - if vote.ProposerID != types.NewNodeID(pubKey) { - return false, nil - } - return true, nil -} - -func hashCRS(block *types.Block, crs common.Hash) common.Hash { - hashPos := hashPosition(block.Position) - return crypto.Keccak256Hash(crs[:], hashPos[:]) -} - -func verifyCRSSignature(block *types.Block, crs common.Hash) ( - bool, error) { - hash := hashCRS(block, crs) - pubKey, err := crypto.SigToPub(hash, block.CRSSignature) - if err != nil { - return false, err - } - if block.ProposerID != types.NewNodeID(pubKey) { - return false, nil - } - return true, nil -} - -func hashPosition(position types.Position) common.Hash { - binaryChainID := make([]byte, 4) - binary.LittleEndian.PutUint32(binaryChainID, position.ChainID) - - binaryHeight := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryHeight, position.Height) - - return crypto.Keccak256Hash( - binaryChainID, - binaryHeight, - ) -} - -func hashDKGPrivateShare(prvShare *typesDKG.PrivateShare) common.Hash { - binaryRound := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryRound, prvShare.Round) - - return crypto.Keccak256Hash( - prvShare.ProposerID.Hash[:], - prvShare.ReceiverID.Hash[:], - binaryRound, - prvShare.PrivateShare.Bytes(), - ) -} - -func verifyDKGPrivateShareSignature( - prvShare *typesDKG.PrivateShare) (bool, error) { - hash := hashDKGPrivateShare(prvShare) - pubKey, err := crypto.SigToPub(hash, prvShare.Signature) - if err != nil { - return false, err - } - if prvShare.ProposerID != types.NewNodeID(pubKey) { - return false, nil - } - return true, nil -} - -func hashDKGMasterPublicKey(mpk *typesDKG.MasterPublicKey) common.Hash { - binaryRound := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryRound, mpk.Round) - - return crypto.Keccak256Hash( - mpk.ProposerID.Hash[:], - mpk.DKGID.GetLittleEndian(), - mpk.PublicKeyShares.MasterKeyBytes(), - binaryRound, - ) -} - -// VerifyDKGMasterPublicKeySignature verifies DKGMasterPublicKey signature. -func VerifyDKGMasterPublicKeySignature( - mpk *typesDKG.MasterPublicKey) (bool, error) { - hash := hashDKGMasterPublicKey(mpk) - pubKey, err := crypto.SigToPub(hash, mpk.Signature) - if err != nil { - return false, err - } - if mpk.ProposerID != types.NewNodeID(pubKey) { - return false, nil - } - return true, nil -} - -func hashDKGComplaint(complaint *typesDKG.Complaint) common.Hash { - binaryRound := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryRound, complaint.Round) - - hashPrvShare := hashDKGPrivateShare(&complaint.PrivateShare) - - return crypto.Keccak256Hash( - complaint.ProposerID.Hash[:], - binaryRound, - hashPrvShare[:], - ) -} - -// VerifyDKGComplaintSignature verifies DKGCompliant signature. -func VerifyDKGComplaintSignature( - complaint *typesDKG.Complaint) (bool, error) { - if complaint.Round != complaint.PrivateShare.Round { - return false, nil - } - hash := hashDKGComplaint(complaint) - pubKey, err := crypto.SigToPub(hash, complaint.Signature) - if err != nil { - return false, err - } - if complaint.ProposerID != types.NewNodeID(pubKey) { - return false, nil - } - if !complaint.IsNack() { - return verifyDKGPrivateShareSignature(&complaint.PrivateShare) - } - return true, nil -} - -func hashDKGPartialSignature(psig *typesDKG.PartialSignature) common.Hash { - binaryRound := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryRound, psig.Round) - - return crypto.Keccak256Hash( - psig.ProposerID.Hash[:], - binaryRound, - psig.Hash[:], - psig.PartialSignature.Signature[:], - ) -} - -func verifyDKGPartialSignatureSignature( - psig *typesDKG.PartialSignature) (bool, error) { - hash := hashDKGPartialSignature(psig) - pubKey, err := crypto.SigToPub(hash, psig.Signature) - if err != nil { - return false, err - } - if psig.ProposerID != types.NewNodeID(pubKey) { - return false, nil - } - return true, nil -} - -func hashDKGFinalize(final *typesDKG.Finalize) common.Hash { - binaryRound := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryRound, final.Round) - - return crypto.Keccak256Hash( - final.ProposerID.Hash[:], - binaryRound, - ) -} - -// VerifyDKGFinalizeSignature verifies DKGFinalize signature. -func VerifyDKGFinalizeSignature( - final *typesDKG.Finalize) (bool, error) { - hash := hashDKGFinalize(final) - pubKey, err := crypto.SigToPub(hash, final.Signature) - if err != nil { - return false, err - } - if final.ProposerID != types.NewNodeID(pubKey) { - return false, nil - } - return true, nil -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/constant.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/constant.go deleted file mode 100644 index 3e7ef4574..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/constant.go +++ /dev/null @@ -1,26 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package dkg - -import ( - "github.com/dexon-foundation/bls/ffi/go/bls" -) - -const ( - curve = bls.CurveFp382_2 -) diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/dkg.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/dkg.go deleted file mode 100644 index 5be16847d..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/dkg.go +++ /dev/null @@ -1,560 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package dkg - -import ( - "encoding/json" - "fmt" - "io" - - "github.com/dexon-foundation/bls/ffi/go/bls" - "github.com/dexon-foundation/dexon/rlp" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" -) - -var ( - // ErrDuplicatedShare is reported when adding an private key share of same id. - ErrDuplicatedShare = fmt.Errorf("invalid share") - // ErrNoIDToRecover is reported when no id is provided for recovering private - // key. - ErrNoIDToRecover = fmt.Errorf("no id to recover private key") - // ErrShareNotFound is reported when the private key share of id is not found - // when recovering private key. - ErrShareNotFound = fmt.Errorf("share not found") -) - -const cryptoType = "bls" - -var publicKeyLength int - -func init() { - bls.Init(curve) - - pubKey := &bls.PublicKey{} - publicKeyLength = len(pubKey.Serialize()) -} - -// PrivateKey represents a private key structure implments -// Crypto.PrivateKey interface. -type PrivateKey struct { - privateKey bls.SecretKey - publicKey PublicKey -} - -// EncodeRLP implements rlp.Encoder -func (prv *PrivateKey) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, prv.Bytes()) -} - -// DecodeRLP implements rlp.Decoder -func (prv *PrivateKey) DecodeRLP(s *rlp.Stream) error { - var b []byte - if err := s.Decode(&b); err != nil { - return err - } - return prv.SetBytes(b) -} - -// MarshalJSON implements json.Marshaller. -func (prv *PrivateKey) MarshalJSON() ([]byte, error) { - return json.Marshal(&prv.privateKey) -} - -// UnmarshalJSON implements json.Unmarshaller. -func (prv *PrivateKey) UnmarshalJSON(data []byte) error { - return json.Unmarshal(data, &prv.privateKey) -} - -// ID is the id for DKG protocol. -type ID = bls.ID - -// IDs is an array of ID. -type IDs []ID - -// PublicKey represents a public key structure implements -// Crypto.PublicKey interface. -type PublicKey struct { - publicKey bls.PublicKey -} - -// PrivateKeyShares represents a private key shares for DKG protocol. -type PrivateKeyShares struct { - shares []PrivateKey - shareIndex map[ID]int - masterPrivateKey []bls.SecretKey -} - -// Equal check equality between two PrivateKeyShares instances. -func (prvs *PrivateKeyShares) Equal(other *PrivateKeyShares) bool { - // Check shares. - if len(prvs.shareIndex) != len(other.shareIndex) { - return false - } - for dID, idx := range prvs.shareIndex { - otherIdx, exists := other.shareIndex[dID] - if !exists { - return false - } - if !prvs.shares[idx].privateKey.IsEqual( - &other.shares[otherIdx].privateKey) { - return false - } - } - // Check master private keys. - if len(prvs.masterPrivateKey) != len(other.masterPrivateKey) { - return false - } - for idx, m := range prvs.masterPrivateKey { - if m.GetHexString() != other.masterPrivateKey[idx].GetHexString() { - return false - } - } - return true -} - -// PublicKeyShares represents a public key shares for DKG protocol. -type PublicKeyShares struct { - shareCaches []PublicKey - shareCacheIndex map[ID]int - masterPublicKey []bls.PublicKey -} - -type rlpPublicKeyShares struct { - ShareCaches [][]byte - ShareCacheIndexK [][]byte - ShareCacheIndexV []uint32 - MasterPublicKey [][]byte -} - -// Equal checks equality of two PublicKeyShares instance. -func (pubs *PublicKeyShares) Equal(other *PublicKeyShares) bool { - // Check shares. - for dID, idx := range pubs.shareCacheIndex { - otherIdx, exists := other.shareCacheIndex[dID] - if !exists { - continue - } - if !pubs.shareCaches[idx].publicKey.IsEqual( - &other.shareCaches[otherIdx].publicKey) { - return false - } - } - // Check master public keys. - if len(pubs.masterPublicKey) != len(other.masterPublicKey) { - return false - } - for idx, m := range pubs.masterPublicKey { - if m.GetHexString() != other.masterPublicKey[idx].GetHexString() { - return false - } - } - return true -} - -// EncodeRLP implements rlp.Encoder -func (pubs *PublicKeyShares) EncodeRLP(w io.Writer) error { - var rps rlpPublicKeyShares - for _, share := range pubs.shareCaches { - rps.ShareCaches = append(rps.ShareCaches, share.Serialize()) - } - - for id, v := range pubs.shareCacheIndex { - rps.ShareCacheIndexK = append( - rps.ShareCacheIndexK, id.GetLittleEndian()) - rps.ShareCacheIndexV = append(rps.ShareCacheIndexV, uint32(v)) - } - - for _, m := range pubs.masterPublicKey { - rps.MasterPublicKey = append(rps.MasterPublicKey, m.Serialize()) - } - - return rlp.Encode(w, rps) -} - -// DecodeRLP implements rlp.Decoder -func (pubs *PublicKeyShares) DecodeRLP(s *rlp.Stream) error { - var dec rlpPublicKeyShares - if err := s.Decode(&dec); err != nil { - return err - } - - if len(dec.ShareCacheIndexK) != len(dec.ShareCacheIndexV) { - return fmt.Errorf("invalid shareIndex") - } - - ps := NewEmptyPublicKeyShares() - for _, share := range dec.ShareCaches { - var publicKey PublicKey - if err := publicKey.Deserialize(share); err != nil { - return err - } - ps.shareCaches = append(ps.shareCaches, publicKey) - } - - for i, k := range dec.ShareCacheIndexK { - id, err := BytesID(k) - if err != nil { - return err - } - ps.shareCacheIndex[id] = int(dec.ShareCacheIndexV[i]) - } - - for _, k := range dec.MasterPublicKey { - var key bls.PublicKey - if err := key.Deserialize(k); err != nil { - return err - } - ps.masterPublicKey = append(ps.masterPublicKey, key) - } - - *pubs = *ps - return nil -} - -// MarshalJSON implements json.Marshaller. -func (pubs *PublicKeyShares) MarshalJSON() ([]byte, error) { - type Alias PublicKeyShares - data := &struct { - MasterPublicKeys []*bls.PublicKey `json:"master_public_keys"` - }{ - make([]*bls.PublicKey, len(pubs.masterPublicKey)), - } - for i := range pubs.masterPublicKey { - data.MasterPublicKeys[i] = &pubs.masterPublicKey[i] - } - return json.Marshal(data) -} - -// UnmarshalJSON implements json.Unmarshaller. -func (pubs *PublicKeyShares) UnmarshalJSON(data []byte) error { - type Alias PublicKeyShares - aux := &struct { - MasterPublicKeys []*bls.PublicKey `json:"master_public_keys"` - }{} - if err := json.Unmarshal(data, &aux); err != nil { - return err - } - mpk := make([]bls.PublicKey, len(aux.MasterPublicKeys)) - for i, pk := range aux.MasterPublicKeys { - mpk[i] = *pk - } - pubs.masterPublicKey = mpk - return nil -} - -// Clone clones every fields of PublicKeyShares. This method is mainly -// for testing purpose thus would panic when error. -func (pubs *PublicKeyShares) Clone() *PublicKeyShares { - b, err := rlp.EncodeToBytes(pubs) - if err != nil { - panic(err) - } - pubsCopy := NewEmptyPublicKeyShares() - if err := rlp.DecodeBytes(b, pubsCopy); err != nil { - panic(err) - } - return pubsCopy -} - -// NewID creates a ew ID structure. -func NewID(id []byte) ID { - var blsID bls.ID - blsID.SetLittleEndian(id) - return blsID -} - -// BytesID creates a new ID structure, -// It returns err if the byte slice is not valid. -func BytesID(id []byte) (ID, error) { - var blsID bls.ID - err := blsID.SetLittleEndian(id) - return blsID, err -} - -// NewPrivateKey creates a new PrivateKey structure. -func NewPrivateKey() *PrivateKey { - var key bls.SecretKey - key.SetByCSPRNG() - return &PrivateKey{ - privateKey: key, - publicKey: *newPublicKey(&key), - } -} - -// NewPrivateKeyShares creates a DKG private key shares of threshold t. -func NewPrivateKeyShares(t int) (*PrivateKeyShares, *PublicKeyShares) { - var prv bls.SecretKey - prv.SetByCSPRNG() - msk := prv.GetMasterSecretKey(t) - mpk := bls.GetMasterPublicKey(msk) - return &PrivateKeyShares{ - masterPrivateKey: msk, - shareIndex: make(map[ID]int), - }, &PublicKeyShares{ - shareCacheIndex: make(map[ID]int), - masterPublicKey: mpk, - } -} - -// NewEmptyPrivateKeyShares creates an empty private key shares. -func NewEmptyPrivateKeyShares() *PrivateKeyShares { - return &PrivateKeyShares{ - shareIndex: make(map[ID]int), - } -} - -// SetParticipants sets the DKG participants. -func (prvs *PrivateKeyShares) SetParticipants(IDs IDs) { - prvs.shares = make([]PrivateKey, len(IDs)) - prvs.shareIndex = make(map[ID]int, len(IDs)) - for idx, ID := range IDs { - prvs.shares[idx].privateKey.Set(prvs.masterPrivateKey, &ID) - prvs.shareIndex[ID] = idx - } -} - -// AddShare adds a share. -func (prvs *PrivateKeyShares) AddShare(ID ID, share *PrivateKey) error { - if idx, exist := prvs.shareIndex[ID]; exist { - if !share.privateKey.IsEqual(&prvs.shares[idx].privateKey) { - return ErrDuplicatedShare - } - return nil - } - prvs.shareIndex[ID] = len(prvs.shares) - prvs.shares = append(prvs.shares, *share) - return nil -} - -// RecoverPrivateKey recovers private key from the shares. -func (prvs *PrivateKeyShares) RecoverPrivateKey(qualifyIDs IDs) ( - *PrivateKey, error) { - var prv PrivateKey - if len(qualifyIDs) == 0 { - return nil, ErrNoIDToRecover - } - for i, ID := range qualifyIDs { - idx, exist := prvs.shareIndex[ID] - if !exist { - return nil, ErrShareNotFound - } - if i == 0 { - prv.privateKey = prvs.shares[idx].privateKey - continue - } - prv.privateKey.Add(&prvs.shares[idx].privateKey) - } - return &prv, nil -} - -// RecoverPublicKey recovers public key from the shares. -func (prvs *PrivateKeyShares) RecoverPublicKey(qualifyIDs IDs) ( - *PublicKey, error) { - var pub PublicKey - if len(qualifyIDs) == 0 { - return nil, ErrNoIDToRecover - } - for i, ID := range qualifyIDs { - idx, exist := prvs.shareIndex[ID] - if !exist { - return nil, ErrShareNotFound - } - if i == 0 { - pub.publicKey = *prvs.shares[idx].privateKey.GetPublicKey() - continue - } - pub.publicKey.Add(prvs.shares[idx].privateKey.GetPublicKey()) - } - return &pub, nil -} - -// Share returns the share for the ID. -func (prvs *PrivateKeyShares) Share(ID ID) (*PrivateKey, bool) { - idx, exist := prvs.shareIndex[ID] - if !exist { - return nil, false - } - return &prvs.shares[idx], true -} - -// NewEmptyPublicKeyShares creates an empty public key shares. -func NewEmptyPublicKeyShares() *PublicKeyShares { - return &PublicKeyShares{ - shareCacheIndex: make(map[ID]int), - } -} - -// Share returns the share for the ID. -func (pubs *PublicKeyShares) Share(ID ID) (*PublicKey, error) { - idx, exist := pubs.shareCacheIndex[ID] - if exist { - return &pubs.shareCaches[idx], nil - } - var pk PublicKey - if err := pk.publicKey.Set(pubs.masterPublicKey, &ID); err != nil { - return nil, err - } - pubs.AddShare(ID, &pk) - return &pk, nil -} - -// AddShare adds a share. -func (pubs *PublicKeyShares) AddShare(ID ID, share *PublicKey) error { - if idx, exist := pubs.shareCacheIndex[ID]; exist { - if !share.publicKey.IsEqual(&pubs.shareCaches[idx].publicKey) { - return ErrDuplicatedShare - } - return nil - } - pubs.shareCacheIndex[ID] = len(pubs.shareCaches) - pubs.shareCaches = append(pubs.shareCaches, *share) - return nil -} - -// VerifyPrvShare verifies if the private key shares is valid. -func (pubs *PublicKeyShares) VerifyPrvShare(ID ID, share *PrivateKey) ( - bool, error) { - var pk bls.PublicKey - if err := pk.Set(pubs.masterPublicKey, &ID); err != nil { - return false, err - } - return pk.IsEqual(share.privateKey.GetPublicKey()), nil -} - -// VerifyPubShare verifies if the public key shares is valid. -func (pubs *PublicKeyShares) VerifyPubShare(ID ID, share *PublicKey) ( - bool, error) { - var pk bls.PublicKey - if err := pk.Set(pubs.masterPublicKey, &ID); err != nil { - return false, err - } - return pk.IsEqual(&share.publicKey), nil -} - -// RecoverPublicKey recovers private key from the shares. -func (pubs *PublicKeyShares) RecoverPublicKey(qualifyIDs IDs) ( - *PublicKey, error) { - var pub PublicKey - if len(qualifyIDs) == 0 { - return nil, ErrNoIDToRecover - } - for i, ID := range qualifyIDs { - pk, err := pubs.Share(ID) - if err != nil { - return nil, err - } - if i == 0 { - pub.publicKey = pk.publicKey - continue - } - pub.publicKey.Add(&pk.publicKey) - } - return &pub, nil -} - -// MasterKeyBytes returns []byte representation of master public key. -func (pubs *PublicKeyShares) MasterKeyBytes() []byte { - bytes := make([]byte, 0, len(pubs.masterPublicKey)*publicKeyLength) - for _, pk := range pubs.masterPublicKey { - bytes = append(bytes, pk.Serialize()...) - } - return bytes -} - -// newPublicKey creates a new PublicKey structure. -func newPublicKey(prvKey *bls.SecretKey) *PublicKey { - return &PublicKey{ - publicKey: *prvKey.GetPublicKey(), - } -} - -// newPublicKeyFromBytes create a new PublicKey structure -// from bytes representation of bls.PublicKey -func newPublicKeyFromBytes(b []byte) (*PublicKey, error) { - var pub PublicKey - err := pub.publicKey.Deserialize(b) - return &pub, err -} - -// PublicKey returns the public key associate this private key. -func (prv *PrivateKey) PublicKey() crypto.PublicKey { - return prv.publicKey -} - -// Sign calculates a signature. -func (prv *PrivateKey) Sign(hash common.Hash) (crypto.Signature, error) { - msg := string(hash[:]) - sign := prv.privateKey.Sign(msg) - return crypto.Signature{ - Type: cryptoType, - Signature: sign.Serialize(), - }, nil -} - -// Bytes returns []byte representation of private key. -func (prv *PrivateKey) Bytes() []byte { - return prv.privateKey.GetLittleEndian() -} - -// SetBytes sets the private key data to []byte. -func (prv *PrivateKey) SetBytes(bytes []byte) error { - var key bls.SecretKey - if err := key.SetLittleEndian(bytes); err != nil { - return err - } - prv.privateKey = key - prv.publicKey = *newPublicKey(&prv.privateKey) - return nil -} - -// String returns string representation of privat key. -func (prv *PrivateKey) String() string { - return prv.privateKey.GetHexString() -} - -// VerifySignature checks that the given public key created signature over hash. -func (pub PublicKey) VerifySignature( - hash common.Hash, signature crypto.Signature) bool { - if len(signature.Signature) == 0 { - return false - } - var sig bls.Sign - if err := sig.Deserialize(signature.Signature[:]); err != nil { - fmt.Println(err) - return false - } - msg := string(hash[:]) - return sig.Verify(&pub.publicKey, msg) -} - -// Bytes returns []byte representation of public key. -func (pub PublicKey) Bytes() []byte { - return pub.publicKey.Serialize() -} - -// Serialize return bytes representation of public key. -func (pub *PublicKey) Serialize() []byte { - return pub.publicKey.Serialize() -} - -// Deserialize parses bytes representation of public key. -func (pub *PublicKey) Deserialize(b []byte) error { - return pub.publicKey.Deserialize(b) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/utils.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/utils.go deleted file mode 100644 index fa4ad9f05..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/dkg/utils.go +++ /dev/null @@ -1,71 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package dkg - -import ( - "fmt" - - "github.com/dexon-foundation/bls/ffi/go/bls" - - "github.com/dexon-foundation/dexon-consensus/core/crypto" -) - -// PartialSignature is a partial signature in DKG+TSIG protocol. -type PartialSignature crypto.Signature - -var ( - // ErrEmptySignature is reported if the signature is empty. - ErrEmptySignature = fmt.Errorf("invalid empty signature") -) - -// RecoverSignature recovers TSIG signature. -func RecoverSignature(sigs []PartialSignature, signerIDs IDs) ( - crypto.Signature, error) { - blsSigs := make([]bls.Sign, len(sigs)) - for i, sig := range sigs { - if len(sig.Signature) == 0 { - return crypto.Signature{}, ErrEmptySignature - } - if err := blsSigs[i].Deserialize([]byte(sig.Signature)); err != nil { - return crypto.Signature{}, err - } - } - var recoverSig bls.Sign - if err := recoverSig.Recover(blsSigs, []bls.ID(signerIDs)); err != nil { - return crypto.Signature{}, err - } - return crypto.Signature{ - Type: cryptoType, - Signature: recoverSig.Serialize()}, nil -} - -// RecoverGroupPublicKey recovers group public key. -func RecoverGroupPublicKey(pubShares []*PublicKeyShares) *PublicKey { - var pub *PublicKey - for _, pubShare := range pubShares { - pk0 := pubShare.masterPublicKey[0] - if pub == nil { - pub = &PublicKey{ - publicKey: pk0, - } - } else { - pub.publicKey.Add(&pk0) - } - } - return pub -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/ecdsa/ecdsa.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/ecdsa/ecdsa.go deleted file mode 100644 index 82e4dca4b..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/ecdsa/ecdsa.go +++ /dev/null @@ -1,133 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package ecdsa - -import ( - "crypto/ecdsa" - - dexCrypto "github.com/dexon-foundation/dexon/crypto" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" -) - -const cryptoType = "ecdsa" - -func init() { - crypto.RegisterSigToPub(cryptoType, SigToPub) -} - -// PrivateKey represents a private key structure used in geth and implments -// Crypto.PrivateKey interface. -type PrivateKey struct { - privateKey *ecdsa.PrivateKey -} - -// PublicKey represents a public key structure used in geth and implements -// Crypto.PublicKey interface. -type PublicKey struct { - publicKey *ecdsa.PublicKey -} - -// NewPrivateKey creates a new PrivateKey structure. -func NewPrivateKey() (*PrivateKey, error) { - key, err := dexCrypto.GenerateKey() - if err != nil { - return nil, err - } - return &PrivateKey{privateKey: key}, nil -} - -// NewPrivateKeyFromECDSA creates a new PrivateKey structure from -// ecdsa.PrivateKey. -func NewPrivateKeyFromECDSA(key *ecdsa.PrivateKey) *PrivateKey { - return &PrivateKey{privateKey: key} -} - -// NewPublicKeyFromECDSA creates a new PublicKey structure from -// ecdsa.PublicKey. -func NewPublicKeyFromECDSA(key *ecdsa.PublicKey) *PublicKey { - return &PublicKey{publicKey: key} -} - -// NewPublicKeyFromByteSlice constructs an eth.publicKey instance from -// a byte slice. -func NewPublicKeyFromByteSlice(b []byte) (crypto.PublicKey, error) { - pub, err := dexCrypto.UnmarshalPubkey(b) - if err != nil { - return &PublicKey{}, err - } - return &PublicKey{publicKey: pub}, nil -} - -// PublicKey returns the public key associate this private key. -func (prv *PrivateKey) PublicKey() crypto.PublicKey { - return NewPublicKeyFromECDSA(&(prv.privateKey.PublicKey)) -} - -// Sign calculates an ECDSA signature. -// -// This function is susceptible to chosen plaintext attacks that can leak -// information about the private key that is used for signing. Callers must -// be aware that the given hash cannot be chosen by an adversery. Common -// solution is to hash any input before calculating the signature. -// -// The produced signature is in the [R || S || V] format where V is 0 or 1. -func (prv *PrivateKey) Sign(hash common.Hash) ( - sig crypto.Signature, err error) { - s, err := dexCrypto.Sign(hash[:], prv.privateKey) - sig = crypto.Signature{ - Type: cryptoType, - Signature: s, - } - return -} - -// VerifySignature checks that the given public key created signature over hash. -// The public key should be in compressed (33 bytes) or uncompressed (65 bytes) -// format. -// The signature should have the 64 byte [R || S] format. -func (pub *PublicKey) VerifySignature( - hash common.Hash, signature crypto.Signature) bool { - sig := signature.Signature - if len(sig) == 65 { - // The last byte is for ecrecover. - sig = sig[:64] - } - return dexCrypto.VerifySignature(pub.Bytes(), hash[:], sig) -} - -// Compress encodes a public key to the 33-byte compressed format. -func (pub *PublicKey) Compress() []byte { - return dexCrypto.CompressPubkey(pub.publicKey) -} - -// Bytes returns the []byte representation of uncompressed public key. (65 bytes) -func (pub *PublicKey) Bytes() []byte { - return dexCrypto.FromECDSAPub(pub.publicKey) -} - -// SigToPub returns the PublicKey that created the given signature. -func SigToPub( - hash common.Hash, signature crypto.Signature) (crypto.PublicKey, error) { - key, err := dexCrypto.SigToPub(hash[:], signature.Signature[:]) - if err != nil { - return &PublicKey{}, err - } - return &PublicKey{publicKey: key}, nil -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/interfaces.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/interfaces.go deleted file mode 100644 index f3e01e42c..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/interfaces.go +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package crypto - -import ( - "github.com/dexon-foundation/dexon-consensus/common" -) - -// Signature is the basic signature type in DEXON. -type Signature struct { - Type string - Signature []byte -} - -// PrivateKey describes the asymmetric cryptography interface that interacts -// with the private key. -type PrivateKey interface { - // PublicKey returns the public key associate this private key. - PublicKey() PublicKey - - // Sign calculates a signature. - Sign(hash common.Hash) (Signature, error) -} - -// PublicKey describes the asymmetric cryptography interface that interacts -// with the public key. -type PublicKey interface { - // VerifySignature checks that the given public key created signature over hash. - VerifySignature(hash common.Hash, signature Signature) bool - - // Bytes returns the []byte representation of public key. - Bytes() []byte -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/utils.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/utils.go deleted file mode 100644 index 59e91f5a5..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/crypto/utils.go +++ /dev/null @@ -1,80 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package crypto - -import ( - "encoding/hex" - "fmt" - - "github.com/dexon-foundation/dexon/crypto" - - "github.com/dexon-foundation/dexon-consensus/common" -) - -var ( - // ErrSigToPubTypeNotFound is reported if the type is already used. - ErrSigToPubTypeNotFound = fmt.Errorf("type of sigToPub is not found") - - // ErrSigToPubTypeAlreadyExist is reported if the type is already used. - ErrSigToPubTypeAlreadyExist = fmt.Errorf("type of sigToPub is already exist") -) - -// SigToPubFn is a function to recover public key from signature. -type SigToPubFn func(hash common.Hash, signature Signature) (PublicKey, error) - -var sigToPubCB map[string]SigToPubFn - -func init() { - sigToPubCB = make(map[string]SigToPubFn) -} - -// Keccak256Hash calculates and returns the Keccak256 hash of the input data, -// converting it to an internal Hash data structure. -func Keccak256Hash(data ...[]byte) (h common.Hash) { - return common.Hash(crypto.Keccak256Hash(data...)) -} - -// Clone returns a deep copy of a signature. -func (sig Signature) Clone() Signature { - return Signature{ - Type: sig.Type, - Signature: sig.Signature[:], - } -} - -func (sig Signature) String() string { - return hex.EncodeToString([]byte(sig.Signature[:])) -} - -// RegisterSigToPub registers a sigToPub function of type. -func RegisterSigToPub(sigType string, sigToPub SigToPubFn) error { - if _, exist := sigToPubCB[sigType]; exist { - return ErrSigToPubTypeAlreadyExist - } - sigToPubCB[sigType] = sigToPub - return nil -} - -// SigToPub recovers public key from signature. -func SigToPub(hash common.Hash, signature Signature) (PublicKey, error) { - sigToPub, exist := sigToPubCB[signature.Type] - if !exist { - return nil, ErrSigToPubTypeNotFound - } - return sigToPub(hash, signature) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/dkg-tsig-protocol.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/dkg-tsig-protocol.go deleted file mode 100644 index 6645ecbae..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/dkg-tsig-protocol.go +++ /dev/null @@ -1,578 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "fmt" - "sync" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/crypto/dkg" - "github.com/dexon-foundation/dexon-consensus/core/types" - typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg" -) - -// Errors for dkg module. -var ( - ErrNotDKGParticipant = fmt.Errorf( - "not a DKG participant") - ErrNotQualifyDKGParticipant = fmt.Errorf( - "not a qualified DKG participant") - ErrIDShareNotFound = fmt.Errorf( - "private share not found for specific ID") - ErrNotReachThreshold = fmt.Errorf( - "threshold not reach") - ErrInvalidThreshold = fmt.Errorf( - "invalid threshold") - ErrIncorrectPrivateShareSignature = fmt.Errorf( - "incorrect private share signature") - ErrMismatchPartialSignatureHash = fmt.Errorf( - "mismatch partialSignature hash") - ErrIncorrectPartialSignatureSignature = fmt.Errorf( - "incorrect partialSignature signature") - ErrIncorrectPartialSignature = fmt.Errorf( - "incorrect partialSignature") - ErrNotEnoughtPartialSignatures = fmt.Errorf( - "not enough of partial signatures") - ErrRoundAlreadyPurged = fmt.Errorf( - "cache of round already been purged") -) - -type dkgReceiver interface { - // ProposeDKGComplaint proposes a DKGComplaint. - ProposeDKGComplaint(complaint *typesDKG.Complaint) - - // ProposeDKGMasterPublicKey propose a DKGMasterPublicKey. - ProposeDKGMasterPublicKey(mpk *typesDKG.MasterPublicKey) - - // ProposeDKGPrivateShare propose a DKGPrivateShare. - ProposeDKGPrivateShare(prv *typesDKG.PrivateShare) - - // ProposeDKGAntiNackComplaint propose a DKGPrivateShare as an anti complaint. - ProposeDKGAntiNackComplaint(prv *typesDKG.PrivateShare) - - // ProposeDKGFinalize propose a DKGFinalize message. - ProposeDKGFinalize(final *typesDKG.Finalize) -} - -type dkgProtocol struct { - ID types.NodeID - recv dkgReceiver - round uint64 - threshold int - idMap map[types.NodeID]dkg.ID - mpkMap map[types.NodeID]*dkg.PublicKeyShares - masterPrivateShare *dkg.PrivateKeyShares - prvShares *dkg.PrivateKeyShares - prvSharesReceived map[types.NodeID]struct{} - nodeComplained map[types.NodeID]struct{} - // Complaint[from][to]'s anti is saved to antiComplaint[from][to]. - antiComplaintReceived map[types.NodeID]map[types.NodeID]struct{} -} - -type dkgShareSecret struct { - privateKey *dkg.PrivateKey -} - -// DKGGroupPublicKey is the result of DKG protocol. -type DKGGroupPublicKey struct { - round uint64 - qualifyIDs dkg.IDs - qualifyNodeIDs map[types.NodeID]struct{} - idMap map[types.NodeID]dkg.ID - publicKeys map[types.NodeID]*dkg.PublicKey - groupPublicKey *dkg.PublicKey - threshold int -} - -// TSigVerifier is the interface verifying threshold signature. -type TSigVerifier interface { - VerifySignature(hash common.Hash, sig crypto.Signature) bool -} - -// TSigVerifierCacheInterface specifies interface used by TSigVerifierCache. -type TSigVerifierCacheInterface interface { - // Configuration returns the configuration at a given round. - // Return the genesis configuration if round == 0. - Configuration(round uint64) *types.Config - - // DKGComplaints gets all the DKGComplaints of round. - DKGComplaints(round uint64) []*typesDKG.Complaint - - // DKGMasterPublicKeys gets all the DKGMasterPublicKey of round. - DKGMasterPublicKeys(round uint64) []*typesDKG.MasterPublicKey - - // IsDKGFinal checks if DKG is final. - IsDKGFinal(round uint64) bool -} - -// TSigVerifierCache is the cache for TSigVerifier. -type TSigVerifierCache struct { - intf TSigVerifierCacheInterface - verifier map[uint64]TSigVerifier - minRound uint64 - cacheSize int - lock sync.RWMutex -} - -type tsigProtocol struct { - groupPublicKey *DKGGroupPublicKey - hash common.Hash - sigs map[dkg.ID]dkg.PartialSignature - threshold int -} - -func newDKGID(ID types.NodeID) dkg.ID { - return dkg.NewID(ID.Hash[:]) -} - -func newDKGProtocol( - ID types.NodeID, - recv dkgReceiver, - round uint64, - threshold int) *dkgProtocol { - - prvShare, pubShare := dkg.NewPrivateKeyShares(threshold) - - recv.ProposeDKGMasterPublicKey(&typesDKG.MasterPublicKey{ - ProposerID: ID, - Round: round, - DKGID: newDKGID(ID), - PublicKeyShares: *pubShare, - }) - - return &dkgProtocol{ - ID: ID, - recv: recv, - round: round, - threshold: threshold, - idMap: make(map[types.NodeID]dkg.ID), - mpkMap: make(map[types.NodeID]*dkg.PublicKeyShares), - masterPrivateShare: prvShare, - prvShares: dkg.NewEmptyPrivateKeyShares(), - prvSharesReceived: make(map[types.NodeID]struct{}), - nodeComplained: make(map[types.NodeID]struct{}), - antiComplaintReceived: make(map[types.NodeID]map[types.NodeID]struct{}), - } -} - -func (d *dkgProtocol) processMasterPublicKeys( - mpks []*typesDKG.MasterPublicKey) error { - d.idMap = make(map[types.NodeID]dkg.ID, len(mpks)) - d.mpkMap = make(map[types.NodeID]*dkg.PublicKeyShares, len(mpks)) - d.prvSharesReceived = make(map[types.NodeID]struct{}, len(mpks)) - ids := make(dkg.IDs, len(mpks)) - for i := range mpks { - nID := mpks[i].ProposerID - d.idMap[nID] = mpks[i].DKGID - d.mpkMap[nID] = &mpks[i].PublicKeyShares - ids[i] = mpks[i].DKGID - } - d.masterPrivateShare.SetParticipants(ids) - for _, mpk := range mpks { - share, ok := d.masterPrivateShare.Share(mpk.DKGID) - if !ok { - return ErrIDShareNotFound - } - d.recv.ProposeDKGPrivateShare(&typesDKG.PrivateShare{ - ProposerID: d.ID, - ReceiverID: mpk.ProposerID, - Round: d.round, - PrivateShare: *share, - }) - } - return nil -} - -func (d *dkgProtocol) proposeNackComplaints() { - for nID := range d.mpkMap { - if _, exist := d.prvSharesReceived[nID]; exist { - continue - } - d.recv.ProposeDKGComplaint(&typesDKG.Complaint{ - ProposerID: d.ID, - Round: d.round, - PrivateShare: typesDKG.PrivateShare{ - ProposerID: nID, - Round: d.round, - }, - }) - } -} - -func (d *dkgProtocol) processNackComplaints(complaints []*typesDKG.Complaint) ( - err error) { - for _, complaint := range complaints { - if !complaint.IsNack() { - continue - } - if complaint.PrivateShare.ProposerID != d.ID { - continue - } - id, exist := d.idMap[complaint.ProposerID] - if !exist { - err = ErrNotDKGParticipant - continue - } - share, ok := d.masterPrivateShare.Share(id) - if !ok { - err = ErrIDShareNotFound - continue - } - d.recv.ProposeDKGAntiNackComplaint(&typesDKG.PrivateShare{ - ProposerID: d.ID, - ReceiverID: complaint.ProposerID, - Round: d.round, - PrivateShare: *share, - }) - } - return -} - -func (d *dkgProtocol) enforceNackComplaints(complaints []*typesDKG.Complaint) { - for _, complaint := range complaints { - if !complaint.IsNack() { - continue - } - to := complaint.PrivateShare.ProposerID - // Do not propose nack complaint to itself. - if to == d.ID { - continue - } - from := complaint.ProposerID - // Nack complaint is already proposed. - if from == d.ID { - continue - } - if _, exist := - d.antiComplaintReceived[from][to]; !exist { - d.recv.ProposeDKGComplaint(&typesDKG.Complaint{ - ProposerID: d.ID, - Round: d.round, - PrivateShare: typesDKG.PrivateShare{ - ProposerID: to, - Round: d.round, - }, - }) - } - } -} - -func (d *dkgProtocol) sanityCheck(prvShare *typesDKG.PrivateShare) error { - if _, exist := d.idMap[prvShare.ProposerID]; !exist { - return ErrNotDKGParticipant - } - ok, err := verifyDKGPrivateShareSignature(prvShare) - if err != nil { - return err - } - if !ok { - return ErrIncorrectPrivateShareSignature - } - return nil -} - -func (d *dkgProtocol) processPrivateShare( - prvShare *typesDKG.PrivateShare) error { - if d.round != prvShare.Round { - return nil - } - receiverID, exist := d.idMap[prvShare.ReceiverID] - // This node is not a DKG participant, ignore the private share. - if !exist { - return nil - } - if err := d.sanityCheck(prvShare); err != nil { - return err - } - mpk := d.mpkMap[prvShare.ProposerID] - ok, err := mpk.VerifyPrvShare(receiverID, &prvShare.PrivateShare) - if err != nil { - return err - } - if prvShare.ReceiverID == d.ID { - d.prvSharesReceived[prvShare.ProposerID] = struct{}{} - } - if !ok { - if _, exist := d.nodeComplained[prvShare.ProposerID]; exist { - return nil - } - complaint := &typesDKG.Complaint{ - ProposerID: d.ID, - Round: d.round, - PrivateShare: *prvShare, - } - d.nodeComplained[prvShare.ProposerID] = struct{}{} - d.recv.ProposeDKGComplaint(complaint) - } else if prvShare.ReceiverID == d.ID { - sender := d.idMap[prvShare.ProposerID] - if err := d.prvShares.AddShare(sender, &prvShare.PrivateShare); err != nil { - return err - } - } else { - // The prvShare is an anti complaint. - if _, exist := d.antiComplaintReceived[prvShare.ReceiverID]; !exist { - d.antiComplaintReceived[prvShare.ReceiverID] = - make(map[types.NodeID]struct{}) - d.recv.ProposeDKGAntiNackComplaint(prvShare) - } - d.antiComplaintReceived[prvShare.ReceiverID][prvShare.ProposerID] = - struct{}{} - } - return nil -} - -func (d *dkgProtocol) proposeFinalize() { - d.recv.ProposeDKGFinalize(&typesDKG.Finalize{ - ProposerID: d.ID, - Round: d.round, - }) -} - -func (d *dkgProtocol) recoverShareSecret(qualifyIDs dkg.IDs) ( - *dkgShareSecret, error) { - if len(qualifyIDs) < d.threshold { - return nil, ErrNotReachThreshold - } - prvKey, err := d.prvShares.RecoverPrivateKey(qualifyIDs) - if err != nil { - return nil, err - } - return &dkgShareSecret{ - privateKey: prvKey, - }, nil -} - -func (ss *dkgShareSecret) sign(hash common.Hash) dkg.PartialSignature { - // DKG sign will always success. - sig, _ := ss.privateKey.Sign(hash) - return dkg.PartialSignature(sig) -} - -// NewDKGGroupPublicKey creats a DKGGroupPublicKey instance. -func NewDKGGroupPublicKey( - round uint64, - mpks []*typesDKG.MasterPublicKey, complaints []*typesDKG.Complaint, - threshold int) ( - *DKGGroupPublicKey, error) { - - if len(mpks) < threshold { - return nil, ErrInvalidThreshold - } - - // Calculate qualify members. - disqualifyIDs := map[types.NodeID]struct{}{} - complaintsByID := map[types.NodeID]int{} - for _, complaint := range complaints { - if complaint.IsNack() { - complaintsByID[complaint.PrivateShare.ProposerID]++ - } else { - disqualifyIDs[complaint.PrivateShare.ProposerID] = struct{}{} - } - } - for nID, num := range complaintsByID { - if num > threshold { - disqualifyIDs[nID] = struct{}{} - } - } - qualifyIDs := make(dkg.IDs, 0, len(mpks)-len(disqualifyIDs)) - qualifyNodeIDs := make(map[types.NodeID]struct{}) - mpkMap := make(map[dkg.ID]*typesDKG.MasterPublicKey, cap(qualifyIDs)) - idMap := make(map[types.NodeID]dkg.ID) - for _, mpk := range mpks { - if _, exist := disqualifyIDs[mpk.ProposerID]; exist { - continue - } - mpkMap[mpk.DKGID] = mpk - idMap[mpk.ProposerID] = mpk.DKGID - qualifyIDs = append(qualifyIDs, mpk.DKGID) - qualifyNodeIDs[mpk.ProposerID] = struct{}{} - } - // Recover qualify members' public key. - pubKeys := make(map[types.NodeID]*dkg.PublicKey, len(qualifyIDs)) - for _, recvID := range qualifyIDs { - pubShares := dkg.NewEmptyPublicKeyShares() - for _, id := range qualifyIDs { - pubShare, err := mpkMap[id].PublicKeyShares.Share(recvID) - if err != nil { - return nil, err - } - if err := pubShares.AddShare(id, pubShare); err != nil { - return nil, err - } - } - pubKey, err := pubShares.RecoverPublicKey(qualifyIDs) - if err != nil { - return nil, err - } - pubKeys[mpkMap[recvID].ProposerID] = pubKey - } - // Recover Group Public Key. - pubShares := make([]*dkg.PublicKeyShares, 0, len(qualifyIDs)) - for _, id := range qualifyIDs { - pubShares = append(pubShares, &mpkMap[id].PublicKeyShares) - } - groupPK := dkg.RecoverGroupPublicKey(pubShares) - return &DKGGroupPublicKey{ - round: round, - qualifyIDs: qualifyIDs, - qualifyNodeIDs: qualifyNodeIDs, - idMap: idMap, - publicKeys: pubKeys, - threshold: threshold, - groupPublicKey: groupPK, - }, nil -} - -// VerifySignature verifies if the signature is correct. -func (gpk *DKGGroupPublicKey) VerifySignature( - hash common.Hash, sig crypto.Signature) bool { - return gpk.groupPublicKey.VerifySignature(hash, sig) -} - -// NewTSigVerifierCache creats a DKGGroupPublicKey instance. -func NewTSigVerifierCache( - intf TSigVerifierCacheInterface, cacheSize int) *TSigVerifierCache { - return &TSigVerifierCache{ - intf: intf, - verifier: make(map[uint64]TSigVerifier), - cacheSize: cacheSize, - } -} - -// UpdateAndGet calls Update and then Get. -func (tc *TSigVerifierCache) UpdateAndGet(round uint64) ( - TSigVerifier, bool, error) { - ok, err := tc.Update(round) - if err != nil { - return nil, false, err - } - if !ok { - return nil, false, nil - } - v, ok := tc.Get(round) - return v, ok, nil -} - -// Update the cache and returns if success. -func (tc *TSigVerifierCache) Update(round uint64) (bool, error) { - tc.lock.Lock() - defer tc.lock.Unlock() - if round < tc.minRound { - return false, ErrRoundAlreadyPurged - } - if _, exist := tc.verifier[round]; exist { - return true, nil - } - if !tc.intf.IsDKGFinal(round) { - return false, nil - } - gpk, err := NewDKGGroupPublicKey(round, - tc.intf.DKGMasterPublicKeys(round), - tc.intf.DKGComplaints(round), - int(tc.intf.Configuration(round).DKGSetSize/3)+1) - if err != nil { - return false, err - } - if len(tc.verifier) == 0 { - tc.minRound = round - } - tc.verifier[round] = gpk - if len(tc.verifier) > tc.cacheSize { - delete(tc.verifier, tc.minRound) - } - for { - if _, exist := tc.verifier[tc.minRound]; !exist { - tc.minRound++ - } else { - break - } - } - return true, nil -} - -// Get the TSigVerifier of round and returns if it exists. -func (tc *TSigVerifierCache) Get(round uint64) (TSigVerifier, bool) { - tc.lock.RLock() - defer tc.lock.RUnlock() - verifier, exist := tc.verifier[round] - return verifier, exist -} - -func newTSigProtocol( - gpk *DKGGroupPublicKey, - hash common.Hash) *tsigProtocol { - return &tsigProtocol{ - groupPublicKey: gpk, - hash: hash, - sigs: make(map[dkg.ID]dkg.PartialSignature, gpk.threshold+1), - } -} - -func (tsig *tsigProtocol) sanityCheck(psig *typesDKG.PartialSignature) error { - _, exist := tsig.groupPublicKey.publicKeys[psig.ProposerID] - if !exist { - return ErrNotQualifyDKGParticipant - } - ok, err := verifyDKGPartialSignatureSignature(psig) - if err != nil { - return err - } - if !ok { - return ErrIncorrectPartialSignatureSignature - } - if psig.Hash != tsig.hash { - return ErrMismatchPartialSignatureHash - } - return nil -} - -func (tsig *tsigProtocol) processPartialSignature( - psig *typesDKG.PartialSignature) error { - if psig.Round != tsig.groupPublicKey.round { - return nil - } - id, exist := tsig.groupPublicKey.idMap[psig.ProposerID] - if !exist { - return ErrNotQualifyDKGParticipant - } - if err := tsig.sanityCheck(psig); err != nil { - return err - } - pubKey := tsig.groupPublicKey.publicKeys[psig.ProposerID] - if !pubKey.VerifySignature( - tsig.hash, crypto.Signature(psig.PartialSignature)) { - return ErrIncorrectPartialSignature - } - tsig.sigs[id] = psig.PartialSignature - return nil -} - -func (tsig *tsigProtocol) signature() (crypto.Signature, error) { - if len(tsig.sigs) < tsig.groupPublicKey.threshold { - return crypto.Signature{}, ErrNotEnoughtPartialSignatures - } - ids := make(dkg.IDs, 0, len(tsig.sigs)) - psigs := make([]dkg.PartialSignature, 0, len(tsig.sigs)) - for id, psig := range tsig.sigs { - ids = append(ids, id) - psigs = append(psigs, psig) - } - return dkg.RecoverSignature(psigs, ids) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/interfaces.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/interfaces.go deleted file mode 100644 index 75a2fdfcf..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/interfaces.go +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" - typesDKG "github.com/dexon-foundation/dexon-consensus/core/types/dkg" -) - -// Application describes the application interface that interacts with DEXON -// consensus core. -type Application interface { - // PreparePayload is called when consensus core is preparing a block. - PreparePayload(position types.Position) ([]byte, error) - - // PrepareWitness will return the witness data no lower than consensusHeight. - PrepareWitness(consensusHeight uint64) (types.Witness, error) - - // VerifyBlock verifies if the block is valid. - VerifyBlock(block *types.Block) types.BlockVerifyStatus - - // BlockConfirmed is called when a block is confirmed and added to lattice. - BlockConfirmed(block types.Block) - - // BlockDelivered is called when a block is add to the compaction chain. - BlockDelivered(blockHash common.Hash, result types.FinalizationResult) -} - -// Debug describes the application interface that requires -// more detailed consensus execution. -type Debug interface { - // StronglyAcked is called when a block is strongly acked. - StronglyAcked(blockHash common.Hash) - - // TotalOrderingDelivered is called when the total ordering algorithm deliver - // a set of block. - TotalOrderingDelivered(common.Hashes, uint32) -} - -// Network describs the network interface that interacts with DEXON consensus -// core. -type Network interface { - // PullBlocks tries to pull blocks from the DEXON network. - PullBlocks(hashes common.Hashes) - - // PullVotes tries to pull votes from the DEXON network. - PullVotes(position types.Position) - - // BroadcastVote broadcasts vote to all nodes in DEXON network. - BroadcastVote(vote *types.Vote) - - // BroadcastBlock broadcasts block to all nodes in DEXON network. - BroadcastBlock(block *types.Block) - - // BroadcastAgreementResult broadcasts agreement result to DKG set. - BroadcastAgreementResult(randRequest *types.AgreementResult) - - // BroadcastRandomnessResult broadcasts rand request to Notary set. - BroadcastRandomnessResult(randResult *types.BlockRandomnessResult) - - // SendDKGPrivateShare sends PrivateShare to a DKG participant. - SendDKGPrivateShare(pub crypto.PublicKey, prvShare *typesDKG.PrivateShare) - - // BroadcastDKGPrivateShare broadcasts PrivateShare to all DKG participants. - BroadcastDKGPrivateShare(prvShare *typesDKG.PrivateShare) - - // BroadcastDKGPartialSignature broadcasts partialSignature to all - // DKG participants. - BroadcastDKGPartialSignature(psig *typesDKG.PartialSignature) - - // ReceiveChan returns a channel to receive messages from DEXON network. - ReceiveChan() <-chan interface{} -} - -// Governance interface specifies interface to control the governance contract. -// Note that there are a lot more methods in the governance contract, that this -// interface only define those that are required to run the consensus algorithm. -type Governance interface { - // Configuration returns the configuration at a given round. - // Return the genesis configuration if round == 0. - Configuration(round uint64) *types.Config - - // CRS returns the CRS for a given round. - // Return the genesis CRS if round == 0. - CRS(round uint64) common.Hash - - // Propose a CRS of round. - ProposeCRS(round uint64, signedCRS []byte) - - // NodeSet returns the node set at a given round. - // Return the genesis node set if round == 0. - NodeSet(round uint64) []crypto.PublicKey - - // NotifyRoundHeight notifies governance contract to generate configuration - // for that round with the block on that consensus height. - NotifyRoundHeight(targetRound, consensusHeight uint64) - - //// DKG-related methods. - - // AddDKGComplaint adds a DKGComplaint. - AddDKGComplaint(round uint64, complaint *typesDKG.Complaint) - - // DKGComplaints gets all the DKGComplaints of round. - DKGComplaints(round uint64) []*typesDKG.Complaint - - // AddDKGMasterPublicKey adds a DKGMasterPublicKey. - AddDKGMasterPublicKey(round uint64, masterPublicKey *typesDKG.MasterPublicKey) - - // DKGMasterPublicKeys gets all the DKGMasterPublicKey of round. - DKGMasterPublicKeys(round uint64) []*typesDKG.MasterPublicKey - - // AddDKGFinalize adds a DKG finalize message. - AddDKGFinalize(round uint64, final *typesDKG.Finalize) - - // IsDKGFinal checks if DKG is final. - IsDKGFinal(round uint64) bool -} - -// Ticker define the capability to tick by interval. -type Ticker interface { - // Tick would return a channel, which would be triggered until next tick. - Tick() <-chan time.Time - - // Stop the ticker. - Stop() -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice-data.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice-data.go deleted file mode 100644 index 564675730..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice-data.go +++ /dev/null @@ -1,645 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "errors" - "fmt" - "sort" - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/blockdb" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// Errors for sanity check error. -var ( - ErrDuplicatedAckOnOneChain = fmt.Errorf("duplicated ack on one chain") - ErrInvalidChainID = fmt.Errorf("invalid chain id") - ErrInvalidProposerID = fmt.Errorf("invalid proposer id") - ErrInvalidWitness = fmt.Errorf("invalid witness data") - ErrInvalidBlock = fmt.Errorf("invalid block") - ErrNotAckParent = fmt.Errorf("not ack parent") - ErrDoubleAck = fmt.Errorf("double ack") - ErrAcksNotSorted = fmt.Errorf("acks not sorted") - ErrInvalidBlockHeight = fmt.Errorf("invalid block height") - ErrAlreadyInLattice = fmt.Errorf("block already in lattice") - ErrIncorrectBlockTime = fmt.Errorf("block timestamp is incorrect") - ErrInvalidRoundID = fmt.Errorf("invalid round id") - ErrUnknownRoundID = fmt.Errorf("unknown round id") - ErrRoundOutOfRange = fmt.Errorf("round out of range") - ErrRoundNotSwitch = fmt.Errorf("round not switch") - ErrNotGenesisBlock = fmt.Errorf("not a genesis block") - ErrUnexpectedGenesisBlock = fmt.Errorf("unexpected genesis block") -) - -// ErrAckingBlockNotExists is for sanity check error. -type ErrAckingBlockNotExists struct { - hash common.Hash -} - -func (e ErrAckingBlockNotExists) Error() string { - return fmt.Sprintf("acking block %s not exists", e.hash) -} - -// Errors for method usage -var ( - ErrRoundNotIncreasing = errors.New("round not increasing") - ErrPurgedBlockNotFound = errors.New("purged block not found") - ErrPurgeNotDeliveredBlock = errors.New("not purge from head") -) - -// latticeDataConfig is the configuration for latticeData for each round. -type latticeDataConfig struct { - roundBasedConfig - // Number of chains between runs - numChains uint32 - // Block interval specifies reasonable time difference between - // parent/child blocks. - minBlockTimeInterval time.Duration - maxBlockTimeInterval time.Duration -} - -// Initiate latticeDataConfig from types.Config. -func (config *latticeDataConfig) fromConfig(roundID uint64, cfg *types.Config) { - config.numChains = cfg.NumChains - config.minBlockTimeInterval = cfg.MinBlockInterval - config.maxBlockTimeInterval = cfg.MaxBlockInterval - config.setupRoundBasedFields(roundID, cfg) -} - -// Check if timestamp of a block is valid according to a reference time. -func (config *latticeDataConfig) isValidBlockTime( - b *types.Block, ref time.Time) bool { - return !(b.Timestamp.Before(ref.Add(config.minBlockTimeInterval)) || - b.Timestamp.After(ref.Add(config.maxBlockTimeInterval))) -} - -// isValidGenesisBlockTime check if a timestamp is valid for a genesis block. -func (config *latticeDataConfig) isValidGenesisBlockTime(b *types.Block) bool { - return !(b.Timestamp.Before(config.roundBeginTime) || b.Timestamp.After( - config.roundBeginTime.Add(config.maxBlockTimeInterval))) -} - -// newGenesisLatticeDataConfig constructs a latticeDataConfig instance. -func newGenesisLatticeDataConfig( - dMoment time.Time, config *types.Config) *latticeDataConfig { - c := &latticeDataConfig{} - c.fromConfig(0, config) - c.setRoundBeginTime(dMoment) - return c -} - -// newLatticeDataConfig constructs a latticeDataConfig instance. -func newLatticeDataConfig( - prev *latticeDataConfig, cur *types.Config) *latticeDataConfig { - c := &latticeDataConfig{} - c.fromConfig(prev.roundID+1, cur) - c.setRoundBeginTime(prev.roundEndTime) - return c -} - -// latticeData is a module for storing lattice. -type latticeData struct { - // we need blockdb to read blocks purged from cache in memory. - db blockdb.Reader - // chains stores chains' blocks and other info. - chains []*chainStatus - // blockByHash stores blocks, indexed by block hash. - blockByHash map[common.Hash]*types.Block - // This stores configuration for each round. - configs []*latticeDataConfig -} - -// newLatticeData creates a new latticeData struct. -func newLatticeData( - db blockdb.Reader, genesisConfig *latticeDataConfig) (data *latticeData) { - data = &latticeData{ - db: db, - chains: make([]*chainStatus, genesisConfig.numChains), - blockByHash: make(map[common.Hash]*types.Block), - configs: []*latticeDataConfig{genesisConfig}, - } - for i := range data.chains { - data.chains[i] = &chainStatus{ - ID: uint32(i), - blocks: []*types.Block{}, - lastAckPos: make([]*types.Position, genesisConfig.numChains), - } - } - return -} - -func (data *latticeData) checkAckingRelations(b *types.Block) error { - acksByChainID := make(map[uint32]struct{}, len(data.chains)) - for _, hash := range b.Acks { - bAck, err := data.findBlock(hash) - if err != nil { - if err == blockdb.ErrBlockDoesNotExist { - return &ErrAckingBlockNotExists{hash} - } - return err - } - // Check if it acks blocks from old rounds, the allowed round difference - // is 1. - if DiffUint64(bAck.Position.Round, b.Position.Round) > 1 { - return ErrRoundOutOfRange - } - // Check if it acks older blocks than blocks on the same chain. - lastAckPos := - data.chains[bAck.Position.ChainID].lastAckPos[b.Position.ChainID] - if lastAckPos != nil && !bAck.Position.Newer(lastAckPos) { - return ErrDoubleAck - } - // Check if ack two blocks on the same chain. This would need - // to check after we replace map with slice for acks. - if _, acked := acksByChainID[bAck.Position.ChainID]; acked { - return ErrDuplicatedAckOnOneChain - } - acksByChainID[bAck.Position.ChainID] = struct{}{} - } - return nil -} - -func (data *latticeData) sanityCheck(b *types.Block) error { - // TODO(mission): Check if its proposer is in validator set somewhere, - // lattice doesn't have to know about node set. - config := data.getConfig(b.Position.Round) - if config == nil { - return ErrInvalidRoundID - } - // Check if the chain id is valid. - if b.Position.ChainID >= config.numChains { - return ErrInvalidChainID - } - // Make sure parent block is arrived. - chain := data.chains[b.Position.ChainID] - chainTip := chain.tip - if chainTip == nil { - if !b.ParentHash.Equal(common.Hash{}) { - return &ErrAckingBlockNotExists{b.ParentHash} - } - if !b.IsGenesis() { - return ErrNotGenesisBlock - } - if !config.isValidGenesisBlockTime(b) { - return ErrIncorrectBlockTime - } - return data.checkAckingRelations(b) - } - // Check parent block if parent hash is specified. - if !b.ParentHash.Equal(common.Hash{}) { - if !b.ParentHash.Equal(chainTip.Hash) { - return &ErrAckingBlockNotExists{b.ParentHash} - } - if !b.IsAcking(b.ParentHash) { - return ErrNotAckParent - } - } - chainTipConfig := data.getConfig(chainTip.Position.Round) - // Round can't be rewinded. - if chainTip.Position.Round > b.Position.Round { - return ErrInvalidRoundID - } - checkTip := false - if chainTip.Timestamp.After(chainTipConfig.roundEndTime) { - // Round switching should happen when chainTip already pass - // round end time of its round. - if chainTip.Position.Round == b.Position.Round { - return ErrRoundNotSwitch - } - // The round ID is continuous. - if b.Position.Round-chainTip.Position.Round == 1 { - checkTip = true - } else { - // This block should be genesis block of new round because round - // ID is not continuous. - if !b.IsGenesis() { - return ErrNotGenesisBlock - } - if !config.isValidGenesisBlockTime(b) { - return ErrIncorrectBlockTime - } - // TODO(mission): make sure rounds between chainTip and current block - // don't expect blocks from this chain. - } - } else { - if chainTip.Position.Round != b.Position.Round { - // Round should not switch. - return ErrInvalidRoundID - } - checkTip = true - } - // Validate the relation between chain tip when needed. - if checkTip { - if b.Position.Height != chainTip.Position.Height+1 { - return ErrInvalidBlockHeight - } - if b.Witness.Height < chainTip.Witness.Height { - return ErrInvalidWitness - } - if !config.isValidBlockTime(b, chainTip.Timestamp) { - return ErrIncorrectBlockTime - } - // Chain tip should be acked. - if !b.IsAcking(chainTip.Hash) { - return ErrNotAckParent - } - } - if err := data.checkAckingRelations(b); err != nil { - return err - } - return nil -} - -// addBlock processes block, it does sanity check, inserts block into -// lattice and deletes blocks which will not be used. -func (data *latticeData) addBlock( - block *types.Block) (deliverable []*types.Block, err error) { - var ( - bAck *types.Block - updated bool - ) - data.chains[block.Position.ChainID].addBlock(block) - data.blockByHash[block.Hash] = block - // Update lastAckPos. - for _, ack := range block.Acks { - if bAck, err = data.findBlock(ack); err != nil { - if err == blockdb.ErrBlockDoesNotExist { - err = nil - continue - } - return - } - data.chains[bAck.Position.ChainID].lastAckPos[block.Position.ChainID] = - bAck.Position.Clone() - } - - // Extract blocks that deliverable to total ordering. - // A block is deliverable to total ordering iff: - // - All its acking blocks are delivered to total ordering. - for { - updated = false - for _, status := range data.chains { - if status.nextOutputIndex >= len(status.blocks) { - continue - } - tip := status.blocks[status.nextOutputIndex] - allAckingBlockDelivered := true - for _, ack := range tip.Acks { - if bAck, err = data.findBlock(ack); err != nil { - if err == blockdb.ErrBlockDoesNotExist { - err = nil - allAckingBlockDelivered = false - break - } - return - } - // Check if this block is outputed or not. - idx := data.chains[bAck.Position.ChainID].findBlock( - &bAck.Position) - var ok bool - if idx == -1 { - // Either the block is delivered or not added to chain yet. - if out := - data.chains[bAck.Position.ChainID].lastOutputPosition; out != nil { - ok = !out.Older(&bAck.Position) - } else if ackTip := - data.chains[bAck.Position.ChainID].tip; ackTip != nil { - ok = !ackTip.Position.Older(&bAck.Position) - } - } else { - ok = idx < data.chains[bAck.Position.ChainID].nextOutputIndex - } - if ok { - continue - } - // This acked block exists and not delivered yet. - allAckingBlockDelivered = false - } - if allAckingBlockDelivered { - status.lastOutputPosition = &tip.Position - status.nextOutputIndex++ - deliverable = append(deliverable, tip) - updated = true - } - } - if !updated { - break - } - } - return -} - -// addFinalizedBlock processes block for syncing internal data. -func (data *latticeData) addFinalizedBlock( - block *types.Block) (err error) { - var bAck *types.Block - chain := data.chains[block.Position.ChainID] - if chain.tip != nil && chain.tip.Position.Height >= - block.Position.Height { - return - } - chain.nextOutputIndex = 0 - chain.blocks = []*types.Block{} - chain.tip = block - chain.lastOutputPosition = nil - // Update lastAckPost. - for _, ack := range block.Acks { - if bAck, err = data.findBlock(ack); err != nil { - return - } - data.chains[bAck.Position.ChainID].lastAckPos[block.Position.ChainID] = - bAck.Position.Clone() - } - return -} - -// prepareBlock helps to setup fields of block based on its ChainID and Round, -// including: -// - Acks -// - Timestamp -// - ParentHash and Height from parent block. If there is no valid parent block -// (ex. Newly added chain or bootstrap ), these fields would be setup as -// genesis block. -func (data *latticeData) prepareBlock(b *types.Block) error { - var ( - minTimestamp, maxTimestamp time.Time - config *latticeDataConfig - acks common.Hashes - bindTip bool - chainTip *types.Block - ) - if config = data.getConfig(b.Position.Round); config == nil { - return ErrUnknownRoundID - } - // When this chain is illegal in this round, reject it. - if b.Position.ChainID >= config.numChains { - return ErrInvalidChainID - } - // Reset fields to make sure we got these information from parent block. - b.Position.Height = 0 - b.ParentHash = common.Hash{} - // Decide valid timestamp range. - homeChain := data.chains[b.Position.ChainID] - if homeChain.tip != nil { - chainTip = homeChain.tip - if b.Position.Round < chainTip.Position.Round { - return ErrInvalidRoundID - } - chainTipConfig := data.getConfig(chainTip.Position.Round) - if chainTip.Timestamp.After(chainTipConfig.roundEndTime) { - if b.Position.Round == chainTip.Position.Round { - return ErrRoundNotSwitch - } - if b.Position.Round == chainTip.Position.Round+1 { - bindTip = true - } - } else { - if b.Position.Round != chainTip.Position.Round { - return ErrInvalidRoundID - } - bindTip = true - } - // TODO(mission): find a way to prevent us to assign a witness height - // from Jurassic period. - b.Witness.Height = chainTip.Witness.Height - } - // For blocks with continuous round ID, assign timestamp range based on - // parent block and bound config. - if bindTip { - minTimestamp = chainTip.Timestamp.Add(config.minBlockTimeInterval) - maxTimestamp = chainTip.Timestamp.Add(config.maxBlockTimeInterval) - // When a chain is removed and added back, the reference block - // of previous round can't be used as parent block. - b.ParentHash = chainTip.Hash - b.Position.Height = chainTip.Position.Height + 1 - } else { - // Discontinuous round ID detected, another fresh start of - // new round. - minTimestamp = config.roundBeginTime - maxTimestamp = config.roundBeginTime.Add(config.maxBlockTimeInterval) - } - // Fix timestamp if the given one is invalid. - if b.Timestamp.Before(minTimestamp) { - b.Timestamp = minTimestamp - } else if b.Timestamp.After(maxTimestamp) { - b.Timestamp = maxTimestamp - } - // Setup acks fields. - for _, status := range data.chains { - // Check if we can ack latest block on that chain. - if status.tip == nil { - continue - } - lastAckPos := status.lastAckPos[b.Position.ChainID] - if lastAckPos != nil && !status.tip.Position.Newer(lastAckPos) { - // The reference block is already acked. - continue - } - if status.tip.Position.Round > b.Position.Round { - // Avoid forward acking: acking some block from later rounds. - continue - } - if b.Position.Round > status.tip.Position.Round+1 { - // Can't ack block too old or too new to us. - continue - } - acks = append(acks, status.tip.Hash) - } - b.Acks = common.NewSortedHashes(acks) - return nil -} - -// prepareEmptyBlock helps to setup fields of block based on its ChainID. -// including: -// - Acks only acking its parent -// - Timestamp with parent.Timestamp + minBlockProposeInterval -// - ParentHash and Height from parent block. If there is no valid parent block -// (ex. Newly added chain or bootstrap ), these fields would be setup as -// genesis block. -func (data *latticeData) prepareEmptyBlock(b *types.Block) { - // emptyBlock has no proposer. - b.ProposerID = types.NodeID{} - var acks common.Hashes - // Reset fields to make sure we got these information from parent block. - b.Position.Height = 0 - b.Position.Round = 0 - b.ParentHash = common.Hash{} - b.Timestamp = time.Time{} - // Decide valid timestamp range. - homeChain := data.chains[b.Position.ChainID] - if homeChain.tip != nil { - chainTip := homeChain.tip - b.ParentHash = chainTip.Hash - chainTipConfig := data.getConfig(chainTip.Position.Round) - if chainTip.Timestamp.After(chainTipConfig.roundEndTime) { - b.Position.Round = chainTip.Position.Round + 1 - } else { - b.Position.Round = chainTip.Position.Round - } - b.Position.Height = chainTip.Position.Height + 1 - b.Timestamp = chainTip.Timestamp.Add(chainTipConfig.minBlockTimeInterval) - acks = append(acks, chainTip.Hash) - } - b.Acks = common.NewSortedHashes(acks) -} - -// TODO(mission): make more abstraction for this method. -// nextHeight returns the next height for the chain. -func (data *latticeData) nextPosition(chainID uint32) types.Position { - return data.chains[chainID].nextPosition() -} - -// findBlock seeks blocks in memory or db. -func (data *latticeData) findBlock(h common.Hash) (b *types.Block, err error) { - if b = data.blockByHash[h]; b != nil { - return - } - var tmpB types.Block - if tmpB, err = data.db.Get(h); err != nil { - return - } - b = &tmpB - return -} - -// purgeBlocks purges blocks from cache. -func (data *latticeData) purgeBlocks(blocks []*types.Block) error { - for _, b := range blocks { - if _, exists := data.blockByHash[b.Hash]; !exists { - return ErrPurgedBlockNotFound - } - delete(data.blockByHash, b.Hash) - // blocks would be purged in ascending order in position. - if err := data.chains[b.Position.ChainID].purgeBlock(b); err != nil { - return err - } - } - return nil -} - -// getConfig get configuration for lattice-data by round ID. -func (data *latticeData) getConfig(round uint64) (config *latticeDataConfig) { - if round >= uint64(len(data.configs)) { - return - } - return data.configs[round] -} - -// appendConfig appends a configuration for upcoming round. When you append -// a config for round R, next time you can only append the config for round R+1. -func (data *latticeData) appendConfig( - round uint64, config *types.Config) (err error) { - // Make sure caller knows which round this config belongs to. - if round != uint64(len(data.configs)) { - return ErrRoundNotIncreasing - } - // Set round beginning time. - newConfig := newLatticeDataConfig(data.configs[len(data.configs)-1], config) - data.configs = append(data.configs, newConfig) - // Resize each slice if incoming config contains larger number of chains. - if uint32(len(data.chains)) < newConfig.numChains { - count := newConfig.numChains - uint32(len(data.chains)) - for _, status := range data.chains { - status.lastAckPos = append( - status.lastAckPos, make([]*types.Position, count)...) - } - for i := uint32(len(data.chains)); i < newConfig.numChains; i++ { - data.chains = append(data.chains, &chainStatus{ - ID: i, - blocks: []*types.Block{}, - lastAckPos: make([]*types.Position, newConfig.numChains), - }) - } - } - return nil -} - -type chainStatus struct { - // ID keeps the chainID of this chain status. - ID uint32 - // blocks stores blocks proposed for this chain, sorted by height. - blocks []*types.Block - // tip is the last block on this chain. - tip *types.Block - // lastAckPos caches last acking position from other chains. Nil means - // not acked yet. - lastAckPos []*types.Position - // the index to be output next time. - nextOutputIndex int - // the position of output last time. - lastOutputPosition *types.Position -} - -// findBlock finds index of block in current pending blocks on this chain. -// -1 means not found. -func (s *chainStatus) findBlock(pos *types.Position) (idx int) { - idx = sort.Search(len(s.blocks), func(i int) bool { - return s.blocks[i].Position.Newer(pos) || - s.blocks[i].Position.Equal(pos) - }) - if idx == len(s.blocks) { - idx = -1 - } else if !s.blocks[idx].Position.Equal(pos) { - idx = -1 - } - return idx -} - -// getBlock returns a pending block by giving its index from findBlock method. -func (s *chainStatus) getBlock(idx int) (b *types.Block) { - if idx < 0 || idx >= len(s.blocks) { - return - } - b = s.blocks[idx] - return -} - -// addBlock adds a block to pending blocks on this chain. -func (s *chainStatus) addBlock(b *types.Block) { - s.blocks = append(s.blocks, b) - s.tip = b -} - -// TODO(mission): change back to nextHeight. -// nextPosition returns a valid position for new block in this chain. -func (s *chainStatus) nextPosition() types.Position { - if s.tip == nil { - return types.Position{ - ChainID: s.ID, - Height: 0, - } - } - return types.Position{ - ChainID: s.ID, - Height: s.tip.Position.Height + 1, - } -} - -// purgeBlock purge a block from cache, make sure this block already -// persists to blockdb. -func (s *chainStatus) purgeBlock(b *types.Block) error { - if b.Hash != s.blocks[0].Hash || s.nextOutputIndex <= 0 { - return ErrPurgeNotDeliveredBlock - } - s.blocks = s.blocks[1:] - s.nextOutputIndex-- - return nil -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice.go deleted file mode 100644 index af9c3c42f..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/lattice.go +++ /dev/null @@ -1,317 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "fmt" - "sync" - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/blockdb" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// Errors for sanity check error. -var ( - ErrRetrySanityCheckLater = fmt.Errorf("retry sanity check later") -) - -// Lattice represents a unit to produce a global ordering from multiple chains. -type Lattice struct { - lock sync.RWMutex - authModule *Authenticator - app Application - debug Debug - pool blockPool - retryAdd bool - data *latticeData - toModule *totalOrdering - ctModule *consensusTimestamp - logger common.Logger -} - -// NewLattice constructs an Lattice instance. -func NewLattice( - dMoment time.Time, - cfg *types.Config, - authModule *Authenticator, - app Application, - debug Debug, - db blockdb.BlockDatabase, - logger common.Logger) (s *Lattice) { - // Create genesis latticeDataConfig. - dataConfig := newGenesisLatticeDataConfig(dMoment, cfg) - toConfig := newGenesisTotalOrderingConfig(dMoment, cfg) - s = &Lattice{ - authModule: authModule, - app: app, - debug: debug, - pool: newBlockPool(cfg.NumChains), - data: newLatticeData(db, dataConfig), - toModule: newTotalOrdering(toConfig), - ctModule: newConsensusTimestamp(dMoment, 0, cfg.NumChains), - logger: logger, - } - return -} - -// PrepareBlock setup block's field based on current lattice status. -func (s *Lattice) PrepareBlock( - b *types.Block, proposeTime time.Time) (err error) { - - s.lock.RLock() - defer s.lock.RUnlock() - - b.Timestamp = proposeTime - if err = s.data.prepareBlock(b); err != nil { - return - } - s.logger.Debug("Calling Application.PreparePayload", "position", b.Position) - if b.Payload, err = s.app.PreparePayload(b.Position); err != nil { - return - } - s.logger.Debug("Calling Application.PrepareWitness", - "height", b.Witness.Height) - if b.Witness, err = s.app.PrepareWitness(b.Witness.Height); err != nil { - return - } - if err = s.authModule.SignBlock(b); err != nil { - return - } - return -} - -// PrepareEmptyBlock setup block's field based on current lattice status. -func (s *Lattice) PrepareEmptyBlock(b *types.Block) (err error) { - s.lock.RLock() - defer s.lock.RUnlock() - s.data.prepareEmptyBlock(b) - if b.Hash, err = hashBlock(b); err != nil { - return - } - return -} - -// SanityCheck check if a block is valid. -// -// If some acking blocks don't exists, Lattice would help to cache this block -// and retry when lattice updated in Lattice.ProcessBlock. -func (s *Lattice) SanityCheck(b *types.Block) (err error) { - if b.IsEmpty() { - // Only need to verify block's hash. - var hash common.Hash - if hash, err = hashBlock(b); err != nil { - return - } - if b.Hash != hash { - return ErrInvalidBlock - } - } else { - // Verify block's signature. - if err = s.authModule.VerifyBlock(b); err != nil { - return - } - } - // Make sure acks are sorted. - for i := range b.Acks { - if i == 0 { - continue - } - if !b.Acks[i-1].Less(b.Acks[i]) { - err = ErrAcksNotSorted - return - } - } - if err = func() (err error) { - s.lock.RLock() - defer s.lock.RUnlock() - if err = s.data.sanityCheck(b); err != nil { - if _, ok := err.(*ErrAckingBlockNotExists); ok { - err = ErrRetrySanityCheckLater - } - s.logger.Error("Sanity Check failed", "error", err) - return - } - return - }(); err != nil { - return - } - // Verify data in application layer. - s.logger.Debug("Calling Application.VerifyBlock", "block", b) - switch s.app.VerifyBlock(b) { - case types.VerifyInvalidBlock: - err = ErrInvalidBlock - case types.VerifyRetryLater: - err = ErrRetrySanityCheckLater - } - return -} - -// addBlockToLattice adds a block into lattice, and deliver blocks with the acks -// already delivered. -// -// NOTE: assume the block passed sanity check. -func (s *Lattice) addBlockToLattice( - input *types.Block) (outputBlocks []*types.Block, err error) { - if tip := s.data.chains[input.Position.ChainID].tip; tip != nil { - if !input.Position.Newer(&tip.Position) { - return - } - } - s.pool.addBlock(input) - // Replay tips in pool to check their validity. - for { - hasOutput := false - for i := uint32(0); i < uint32(len(s.pool)); i++ { - var tip *types.Block - if tip = s.pool.tip(i); tip == nil { - continue - } - err = s.data.sanityCheck(tip) - if err == nil { - var output []*types.Block - if output, err = s.data.addBlock(tip); err != nil { - s.logger.Error("Sanity Check failed", "error", err) - continue - } - hasOutput = true - outputBlocks = append(outputBlocks, output...) - } - if _, ok := err.(*ErrAckingBlockNotExists); ok { - err = nil - continue - } - s.pool.removeTip(i) - } - if !hasOutput { - break - } - } - - for _, b := range outputBlocks { - // TODO(jimmy-dexon): change this name of classic DEXON algorithm. - if s.debug != nil { - s.debug.StronglyAcked(b.Hash) - } - s.logger.Debug("Calling Application.BlockConfirmed", "block", input) - s.app.BlockConfirmed(*b.Clone()) - // Purge blocks in pool with the same chainID and lower height. - s.pool.purgeBlocks(b.Position.ChainID, b.Position.Height) - } - - return -} - -// ProcessBlock adds a block into lattice, and deliver ordered blocks. -// If any block pass sanity check after this block add into lattice, they -// would be returned, too. -// -// NOTE: assume the block passed sanity check. -func (s *Lattice) ProcessBlock( - input *types.Block) (delivered []*types.Block, err error) { - var ( - b *types.Block - inLattice []*types.Block - toDelivered []*types.Block - deliveredMode uint32 - ) - - s.lock.Lock() - defer s.lock.Unlock() - - if inLattice, err = s.addBlockToLattice(input); err != nil { - return - } - - if len(inLattice) == 0 { - return - } - - // Perform total ordering for each block added to lattice. - for _, b = range inLattice { - toDelivered, deliveredMode, err = s.toModule.processBlock(b) - if err != nil { - // All errors from total ordering is serious, should panic. - panic(err) - } - if len(toDelivered) == 0 { - continue - } - hashes := make(common.Hashes, len(toDelivered)) - for idx := range toDelivered { - hashes[idx] = toDelivered[idx].Hash - } - if s.debug != nil { - s.debug.TotalOrderingDelivered(hashes, deliveredMode) - } - // Perform timestamp generation. - if err = s.ctModule.processBlocks(toDelivered); err != nil { - return - } - delivered = append(delivered, toDelivered...) - } - return -} - -// NextPosition returns expected position of incoming block for that chain. -func (s *Lattice) NextPosition(chainID uint32) types.Position { - s.lock.RLock() - defer s.lock.RUnlock() - - return s.data.nextPosition(chainID) -} - -// PurgeBlocks from cache of blocks in memory, this is called when the caller -// make sure those blocks are saved to db. -func (s *Lattice) PurgeBlocks(blocks []*types.Block) error { - s.lock.Lock() - defer s.lock.Unlock() - - return s.data.purgeBlocks(blocks) -} - -// AppendConfig add new configs for upcoming rounds. If you add a config for -// round R, next time you can only add the config for round R+1. -func (s *Lattice) AppendConfig(round uint64, config *types.Config) (err error) { - s.lock.Lock() - defer s.lock.Unlock() - - s.pool.resize(config.NumChains) - if err = s.data.appendConfig(round, config); err != nil { - return - } - if err = s.toModule.appendConfig(round, config); err != nil { - return - } - if err = s.ctModule.appendConfig(round, config); err != nil { - return - } - return -} - -// ProcessFinalizedBlock is used for syncing lattice data. -func (s *Lattice) ProcessFinalizedBlock(input *types.Block) { - defer func() { s.retryAdd = true }() - s.lock.Lock() - defer s.lock.Unlock() - if err := s.data.addFinalizedBlock(input); err != nil { - panic(err) - } - s.pool.purgeBlocks(input.Position.ChainID, input.Position.Height) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/leader-selector.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/leader-selector.go deleted file mode 100644 index 2be596abc..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/leader-selector.go +++ /dev/null @@ -1,136 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "fmt" - "math/big" - "sync" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// Errors for leader module. -var ( - ErrIncorrectCRSSignature = fmt.Errorf("incorrect CRS signature") -) - -type validLeaderFn func(*types.Block) bool - -// Some constant value. -var ( - maxHash *big.Int - one *big.Rat -) - -func init() { - hash := make([]byte, common.HashLength) - for i := range hash { - hash[i] = 0xff - } - maxHash = big.NewInt(0).SetBytes(hash) - one = big.NewRat(1, 1) -} - -type leaderSelector struct { - hashCRS common.Hash - numCRS *big.Int - minCRSBlock *big.Int - minBlockHash common.Hash - pendingBlocks []*types.Block - validLeader validLeaderFn - lock sync.Mutex -} - -func newLeaderSelector( - crs common.Hash, validLeader validLeaderFn) *leaderSelector { - numCRS := big.NewInt(0) - numCRS.SetBytes(crs[:]) - return &leaderSelector{ - numCRS: numCRS, - hashCRS: crs, - minCRSBlock: maxHash, - validLeader: validLeader, - } -} - -func (l *leaderSelector) distance(sig crypto.Signature) *big.Int { - hash := crypto.Keccak256Hash(sig.Signature[:]) - num := big.NewInt(0) - num.SetBytes(hash[:]) - num.Abs(num.Sub(l.numCRS, num)) - return num -} - -func (l *leaderSelector) probability(sig crypto.Signature) float64 { - dis := l.distance(sig) - prob := big.NewRat(1, 1).SetFrac(dis, maxHash) - p, _ := prob.Sub(one, prob).Float64() - return p -} - -func (l *leaderSelector) restart() { - l.lock.Lock() - defer l.lock.Unlock() - l.minCRSBlock = maxHash - l.minBlockHash = common.Hash{} - l.pendingBlocks = []*types.Block{} -} - -func (l *leaderSelector) leaderBlockHash() common.Hash { - l.lock.Lock() - defer l.lock.Unlock() - newPendingBlocks := []*types.Block{} - for _, b := range l.pendingBlocks { - if l.validLeader(b) { - l.updateLeader(b) - } else { - newPendingBlocks = append(newPendingBlocks, b) - } - } - l.pendingBlocks = newPendingBlocks - return l.minBlockHash -} - -func (l *leaderSelector) processBlock(block *types.Block) error { - ok, err := verifyCRSSignature(block, l.hashCRS) - if err != nil { - return err - } - if !ok { - return ErrIncorrectCRSSignature - } - l.lock.Lock() - defer l.lock.Unlock() - if !l.validLeader(block) { - l.pendingBlocks = append(l.pendingBlocks, block) - return nil - } - l.updateLeader(block) - return nil -} -func (l *leaderSelector) updateLeader(block *types.Block) { - dist := l.distance(block.CRSSignature) - cmp := l.minCRSBlock.Cmp(dist) - if cmp > 0 || (cmp == 0 && block.Hash.Less(l.minBlockHash)) { - l.minCRSBlock = dist - l.minBlockHash = block.Hash - } -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/negative-ack.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/negative-ack.go deleted file mode 100644 index 417862912..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/negative-ack.go +++ /dev/null @@ -1,211 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it and/or -// modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU Lesser General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "time" - - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -type negativeAck struct { - // owner is the ID of proposer itself, this is used when deciding - // a node to be restricted or not. - owner types.NodeID - - numOfNodes int - - // timeDelay and timeExpire are for nack timeout. - timeDelay time.Duration - timeExpire time.Duration - - // restricteds stores nodes which has been restricted and the time it's - // restricted. - restricteds map[types.NodeID]time.Time - - // lastVotes and lockedVotes store the votes for nack. lastVotes[nid1][nid2] - // and lockedVotes[nid1][nid2] both mean that nid2 votes nid1. The difference - // is lockedVotes works only when nid1 is restricted, so that the votes are - // needed to be locked. - lastVotes map[types.NodeID]map[types.NodeID]struct{} - lockedVotes map[types.NodeID]map[types.NodeID]struct{} - - // timeDiffs is the cache for last time stamps. timeDiffs[nid1][nid2] means - // the last updated timestamps nid1 sees nid2. - timeDiffs map[types.NodeID]map[types.NodeID]map[types.NodeID]time.Time -} - -// newNegativeAck creates a new negaticeAck instance. -func newNegativeAck(nid types.NodeID) *negativeAck { - n := &negativeAck{ - owner: nid, - numOfNodes: 0, - restricteds: make(map[types.NodeID]time.Time), - lastVotes: make(map[types.NodeID]map[types.NodeID]struct{}), - lockedVotes: make(map[types.NodeID]map[types.NodeID]struct{}), - timeDiffs: make(map[types.NodeID]map[types.NodeID]map[types.NodeID]time.Time), - } - n.addNode(nid) - return n -} - -// processNewVote is called when a new "vote" occurs, that is, a node -// sees that other 2f + 1 nodes think a node is slow. "nid" is the -// node which propesed the block which the timestamps votes and "h" is -// the node been voted to be nacked. -func (n *negativeAck) processNewVote( - nid types.NodeID, - h types.NodeID, -) []types.NodeID { - - nackeds := []types.NodeID{} - if _, exist := n.restricteds[h]; exist { - n.lockedVotes[h][nid] = struct{}{} - if len(n.lockedVotes[h]) > 2*(n.numOfNodes-1)/3 { - nackeds = append(nackeds, h) - delete(n.restricteds, h) - } - } else { - if n.owner == nid { - n.restrict(h) - } else { - n.lastVotes[h][nid] = struct{}{} - if len(n.lastVotes[h]) > (n.numOfNodes-1)/3 { - n.restrict(h) - } - } - } - return nackeds -} - -// processTimestamps process new timestamps of a block which is proposed by -// node nid, and returns the nodes being nacked. -func (n *negativeAck) processTimestamps( - nid types.NodeID, - ts map[types.NodeID]time.Time, -) []types.NodeID { - - n.checkRestrictExpire() - - nackeds := []types.NodeID{} - for h := range n.timeDiffs { - if n.timeDiffs[nid][h][h].Equal(ts[h]) { - votes := 0 - for hh := range n.timeDiffs { - if ts[hh].Sub(n.timeDiffs[nid][h][hh]) >= n.timeDelay { - votes++ - } - } - if votes > 2*((n.numOfNodes-1)/3) { - n.lastVotes[h][nid] = struct{}{} - nack := n.processNewVote(nid, h) - for _, i := range nack { - nackeds = append(nackeds, i) - } - } else { - delete(n.lastVotes[h], nid) - } - } else { - for hh := range n.timeDiffs { - n.timeDiffs[nid][h][hh] = ts[hh] - } - delete(n.lastVotes[h], nid) - } - } - return nackeds -} - -func (n *negativeAck) checkRestrictExpire() { - expired := []types.NodeID{} - now := time.Now() - for h, t := range n.restricteds { - if now.Sub(t) >= n.timeExpire { - expired = append(expired, h) - } - } - for _, h := range expired { - delete(n.restricteds, h) - } -} - -func (n *negativeAck) restrict(nid types.NodeID) { - if _, exist := n.restricteds[nid]; !exist { - n.restricteds[nid] = time.Now().UTC() - n.lockedVotes[nid] = map[types.NodeID]struct{}{} - for h := range n.lastVotes[nid] { - n.lockedVotes[nid][h] = struct{}{} - } - } -} - -func (n *negativeAck) getRestrictedNodes() map[types.NodeID]struct{} { - n.checkRestrictExpire() - ret := map[types.NodeID]struct{}{} - for h := range n.restricteds { - ret[h] = struct{}{} - } - return ret -} - -func (n *negativeAck) setTimeDelay(t time.Duration) { - n.timeDelay = t -} - -func (n *negativeAck) setTimeExpire(t time.Duration) { - n.timeExpire = t -} - -func (n *negativeAck) addNode(nid types.NodeID) { - n.numOfNodes++ - n.lastVotes[nid] = make(map[types.NodeID]struct{}) - n.lockedVotes[nid] = make(map[types.NodeID]struct{}) - - newTimeDiff := make(map[types.NodeID]map[types.NodeID]time.Time) - for h := range n.timeDiffs { - newTimeDiff2 := make(map[types.NodeID]time.Time) - for hh := range n.timeDiffs { - newTimeDiff2[hh] = time.Time{} - } - newTimeDiff[h] = newTimeDiff2 - } - n.timeDiffs[nid] = newTimeDiff - for h := range n.timeDiffs { - n.timeDiffs[h][nid] = make(map[types.NodeID]time.Time) - } -} - -func (n *negativeAck) deleteNode(nid types.NodeID) { - n.numOfNodes-- - - delete(n.timeDiffs, nid) - - for h := range n.lastVotes { - delete(n.lastVotes[h], nid) - } - delete(n.lastVotes, nid) - delete(n.lockedVotes, nid) - - for h := range n.timeDiffs { - delete(n.timeDiffs[h], nid) - for hh := range n.timeDiffs[h] { - delete(n.timeDiffs[h][hh], nid) - } - } - - delete(n.restricteds, nid) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/nodeset-cache.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/nodeset-cache.go deleted file mode 100644 index bf7b88d89..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/nodeset-cache.go +++ /dev/null @@ -1,233 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "errors" - "sync" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -var ( - // ErrRoundNotReady means we got nil config. - ErrRoundNotReady = errors.New("round is not ready") -) - -type sets struct { - nodeSet *types.NodeSet - notarySet []map[types.NodeID]struct{} - dkgSet map[types.NodeID]struct{} -} - -// NodeSetCacheInterface interface specifies interface used by NodeSetCache. -type NodeSetCacheInterface interface { - // Configuration returns the configuration at a given round. - // Return the genesis configuration if round == 0. - Configuration(round uint64) *types.Config - - // CRS returns the CRS for a given round. - // Return the genesis CRS if round == 0. - CRS(round uint64) common.Hash - - // NodeSet returns the node set at a given round. - // Return the genesis node set if round == 0. - NodeSet(round uint64) []crypto.PublicKey -} - -// NodeSetCache caches node set information. -type NodeSetCache struct { - lock sync.RWMutex - nsIntf NodeSetCacheInterface - rounds map[uint64]*sets - keyPool map[types.NodeID]*struct { - pubKey crypto.PublicKey - refCnt int - } -} - -// NewNodeSetCache constructs an NodeSetCache instance. -func NewNodeSetCache(nsIntf NodeSetCacheInterface) *NodeSetCache { - return &NodeSetCache{ - nsIntf: nsIntf, - rounds: make(map[uint64]*sets), - keyPool: make(map[types.NodeID]*struct { - pubKey crypto.PublicKey - refCnt int - }), - } -} - -// Exists checks if a node is in node set of that round. -func (cache *NodeSetCache) Exists( - round uint64, nodeID types.NodeID) (exists bool, err error) { - - nIDs, exists := cache.get(round) - if !exists { - if nIDs, err = cache.update(round); err != nil { - return - } - } - _, exists = nIDs.nodeSet.IDs[nodeID] - return -} - -// GetPublicKey return public key for that node: -func (cache *NodeSetCache) GetPublicKey( - nodeID types.NodeID) (key crypto.PublicKey, exists bool) { - - cache.lock.RLock() - defer cache.lock.RUnlock() - - rec, exists := cache.keyPool[nodeID] - if exists { - key = rec.pubKey - } - return -} - -// GetNodeSet returns IDs of nodes set of this round as map. -func (cache *NodeSetCache) GetNodeSet( - round uint64) (nIDs *types.NodeSet, err error) { - - IDs, exists := cache.get(round) - if !exists { - if IDs, err = cache.update(round); err != nil { - return - } - } - nIDs = IDs.nodeSet.Clone() - return -} - -// GetNotarySet returns of notary set of this round. -func (cache *NodeSetCache) GetNotarySet( - round uint64, chainID uint32) (map[types.NodeID]struct{}, error) { - IDs, err := cache.getOrUpdate(round) - if err != nil { - return nil, err - } - if chainID >= uint32(len(IDs.notarySet)) { - return nil, ErrInvalidChainID - } - return cache.cloneMap(IDs.notarySet[chainID]), nil -} - -// GetDKGSet returns of DKG set of this round. -func (cache *NodeSetCache) GetDKGSet( - round uint64) (map[types.NodeID]struct{}, error) { - IDs, err := cache.getOrUpdate(round) - if err != nil { - return nil, err - } - return cache.cloneMap(IDs.dkgSet), nil -} - -func (cache *NodeSetCache) cloneMap( - nIDs map[types.NodeID]struct{}) map[types.NodeID]struct{} { - nIDsCopy := make(map[types.NodeID]struct{}, len(nIDs)) - for k := range nIDs { - nIDsCopy[k] = struct{}{} - } - return nIDsCopy -} - -func (cache *NodeSetCache) getOrUpdate(round uint64) (nIDs *sets, err error) { - s, exists := cache.get(round) - if !exists { - if s, err = cache.update(round); err != nil { - return - } - } - nIDs = s - return -} - -// update node set for that round. -// -// This cache would maintain 10 rounds before the updated round and purge -// rounds not in this range. -func (cache *NodeSetCache) update( - round uint64) (nIDs *sets, err error) { - - cache.lock.Lock() - defer cache.lock.Unlock() - - // Get the requested round. - keySet := cache.nsIntf.NodeSet(round) - if keySet == nil { - // That round is not ready yet. - err = ErrRoundNotReady - return - } - // Cache new round. - nodeSet := types.NewNodeSet() - for _, key := range keySet { - nID := types.NewNodeID(key) - nodeSet.Add(nID) - if rec, exists := cache.keyPool[nID]; exists { - rec.refCnt++ - } else { - cache.keyPool[nID] = &struct { - pubKey crypto.PublicKey - refCnt int - }{key, 1} - } - } - cfg := cache.nsIntf.Configuration(round) - crs := cache.nsIntf.CRS(round) - nIDs = &sets{ - nodeSet: nodeSet, - notarySet: make([]map[types.NodeID]struct{}, cfg.NumChains), - dkgSet: nodeSet.GetSubSet( - int(cfg.DKGSetSize), types.NewDKGSetTarget(crs)), - } - for i := range nIDs.notarySet { - nIDs.notarySet[i] = nodeSet.GetSubSet( - int(cfg.NotarySetSize), types.NewNotarySetTarget(crs, uint32(i))) - } - - cache.rounds[round] = nIDs - // Purge older rounds. - for rID, nIDs := range cache.rounds { - nodeSet := nIDs.nodeSet - if round-rID <= 5 { - continue - } - for nID := range nodeSet.IDs { - rec := cache.keyPool[nID] - if rec.refCnt--; rec.refCnt == 0 { - delete(cache.keyPool, nID) - } - } - delete(cache.rounds, rID) - } - return -} - -func (cache *NodeSetCache) get( - round uint64) (nIDs *sets, exists bool) { - - cache.lock.RLock() - defer cache.lock.RUnlock() - - nIDs, exists = cache.rounds[round] - return -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/nonblocking.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/nonblocking.go deleted file mode 100644 index fafbd10bb..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/nonblocking.go +++ /dev/null @@ -1,164 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "fmt" - "sync" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -type blockConfirmedEvent struct { - block *types.Block -} - -type stronglyAckedEvent struct { - blockHash common.Hash -} - -type totalOrderingDeliveredEvent struct { - blockHashes common.Hashes - mode uint32 -} - -type blockDeliveredEvent struct { - blockHash common.Hash - result *types.FinalizationResult -} - -// nonBlocking implements these interfaces and is a decorator for -// them that makes the methods to be non-blocking. -// - Application -// - Debug -// - It also provides nonblockig for blockdb update. -type nonBlocking struct { - app Application - debug Debug - eventChan chan interface{} - events []interface{} - eventsChange *sync.Cond - running sync.WaitGroup -} - -func newNonBlocking(app Application, debug Debug) *nonBlocking { - nonBlockingModule := &nonBlocking{ - app: app, - debug: debug, - eventChan: make(chan interface{}, 6), - events: make([]interface{}, 0, 100), - eventsChange: sync.NewCond(&sync.Mutex{}), - } - go nonBlockingModule.run() - return nonBlockingModule -} - -func (nb *nonBlocking) addEvent(event interface{}) { - nb.eventsChange.L.Lock() - defer nb.eventsChange.L.Unlock() - nb.events = append(nb.events, event) - nb.eventsChange.Broadcast() -} - -func (nb *nonBlocking) run() { - // This go routine consume the first event from events and call the - // corresponding methods of Application/Debug/blockdb. - for { - var event interface{} - func() { - nb.eventsChange.L.Lock() - defer nb.eventsChange.L.Unlock() - for len(nb.events) == 0 { - nb.eventsChange.Wait() - } - event = nb.events[0] - nb.events = nb.events[1:] - nb.running.Add(1) - }() - switch e := event.(type) { - case stronglyAckedEvent: - nb.debug.StronglyAcked(e.blockHash) - case blockConfirmedEvent: - nb.app.BlockConfirmed(*e.block) - case totalOrderingDeliveredEvent: - nb.debug.TotalOrderingDelivered(e.blockHashes, e.mode) - case blockDeliveredEvent: - nb.app.BlockDelivered(e.blockHash, *e.result) - default: - fmt.Printf("Unknown event %v.", e) - } - nb.running.Done() - nb.eventsChange.Broadcast() - } -} - -// wait will wait for all event in events finishes. -func (nb *nonBlocking) wait() { - nb.eventsChange.L.Lock() - defer nb.eventsChange.L.Unlock() - for len(nb.events) > 0 { - nb.eventsChange.Wait() - } - nb.running.Wait() -} - -// PreparePayload cannot be non-blocking. -func (nb *nonBlocking) PreparePayload(position types.Position) ([]byte, error) { - return nb.app.PreparePayload(position) -} - -// PrepareWitness cannot be non-blocking. -func (nb *nonBlocking) PrepareWitness(height uint64) (types.Witness, error) { - return nb.app.PrepareWitness(height) -} - -// VerifyBlock cannot be non-blocking. -func (nb *nonBlocking) VerifyBlock(block *types.Block) types.BlockVerifyStatus { - return nb.app.VerifyBlock(block) -} - -// BlockConfirmed is called when a block is confirmed and added to lattice. -func (nb *nonBlocking) BlockConfirmed(block types.Block) { - nb.addEvent(blockConfirmedEvent{&block}) -} - -// StronglyAcked is called when a block is strongly acked. -func (nb *nonBlocking) StronglyAcked(blockHash common.Hash) { - if nb.debug != nil { - nb.addEvent(stronglyAckedEvent{blockHash}) - } -} - -// TotalOrderingDelivered is called when the total ordering algorithm deliver -// a set of block. -func (nb *nonBlocking) TotalOrderingDelivered( - blockHashes common.Hashes, mode uint32) { - if nb.debug != nil { - nb.addEvent(totalOrderingDeliveredEvent{blockHashes, mode}) - } -} - -// BlockDelivered is called when a block is add to the compaction chain. -func (nb *nonBlocking) BlockDelivered( - blockHash common.Hash, result types.FinalizationResult) { - nb.addEvent(blockDeliveredEvent{ - blockHash: blockHash, - result: &result, - }) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/round-based-config.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/round-based-config.go deleted file mode 100644 index 580b65e1c..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/round-based-config.go +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "time" - - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -type roundBasedConfig struct { - roundID uint64 - // roundBeginTime is the beginning of round, as local time. - roundBeginTime time.Time - roundInterval time.Duration - // roundEndTime is a cache for begin + interval. - roundEndTime time.Time -} - -func (config *roundBasedConfig) setupRoundBasedFields( - roundID uint64, cfg *types.Config) { - config.roundID = roundID - config.roundInterval = cfg.RoundInterval -} - -func (config *roundBasedConfig) setRoundBeginTime(begin time.Time) { - config.roundBeginTime = begin - config.roundEndTime = begin.Add(config.roundInterval) -} - -// isValidLastBlock checks if a block is a valid last block of this round. -func (config *roundBasedConfig) isValidLastBlock(b *types.Block) bool { - return b.Position.Round == config.roundID && - b.Timestamp.After(config.roundEndTime) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/ticker.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/ticker.go deleted file mode 100644 index 3728a79e6..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/ticker.go +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import "time" - -// TickerType is the type of ticker. -type TickerType int - -// TickerType enum. -const ( - TickerBA TickerType = iota - TickerDKG - TickerCRS -) - -// defaultTicker is a wrapper to implement ticker interface based on -// time.Ticker. -type defaultTicker struct { - ticker *time.Ticker -} - -// newDefaultTicker constructs an defaultTicker instance by giving an interval. -func newDefaultTicker(lambda time.Duration) *defaultTicker { - return &defaultTicker{ticker: time.NewTicker(lambda)} -} - -// Tick implements Tick method of ticker interface. -func (t *defaultTicker) Tick() <-chan time.Time { - return t.ticker.C -} - -// Stop implements Stop method of ticker interface. -func (t *defaultTicker) Stop() { - t.ticker.Stop() -} - -// newTicker is a helper to setup a ticker by giving an Governance. If -// the governace object implements a ticker generator, a ticker from that -// generator would be returned, else constructs a default one. -func newTicker(gov Governance, round uint64, tickerType TickerType) (t Ticker) { - type tickerGenerator interface { - NewTicker(TickerType) Ticker - } - - if gen, ok := gov.(tickerGenerator); ok { - t = gen.NewTicker(tickerType) - } - if t == nil { - var duration time.Duration - switch tickerType { - case TickerBA: - duration = gov.Configuration(round).LambdaBA - case TickerDKG: - duration = gov.Configuration(round).LambdaDKG - case TickerCRS: - duration = gov.Configuration(round).RoundInterval / 2 - } - t = newDefaultTicker(duration) - } - return -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering-syncer.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering-syncer.go deleted file mode 100644 index aa90a1ded..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering-syncer.go +++ /dev/null @@ -1,174 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "sort" - "sync" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -type totalOrderingSyncer struct { - lock sync.RWMutex - - numChains uint32 - syncHeight map[uint32]uint64 - syncDeliverySetIdx int - pendingBlocks []*types.Block - inPendingBlocks map[common.Hash]struct{} - - bootstrapChain map[uint32]struct{} - - // Data to restore delivery set. - pendingDeliveryBlocks []*types.Block - deliverySet map[int][]*types.Block - mapToDeliverySet map[common.Hash]int -} - -func newTotalOrderingSyncer(numChains uint32) *totalOrderingSyncer { - return &totalOrderingSyncer{ - numChains: numChains, - syncHeight: make(map[uint32]uint64), - syncDeliverySetIdx: -1, - inPendingBlocks: make(map[common.Hash]struct{}), - bootstrapChain: make(map[uint32]struct{}), - deliverySet: make(map[int][]*types.Block), - mapToDeliverySet: make(map[common.Hash]int), - } -} - -func (tos *totalOrderingSyncer) synced() bool { - tos.lock.RLock() - defer tos.lock.RUnlock() - return tos.syncDeliverySetIdx != -1 -} - -func (tos *totalOrderingSyncer) processBlock( - block *types.Block) (delivered []*types.Block) { - if tos.synced() { - if tos.syncHeight[block.Position.ChainID] >= block.Position.Height { - return - } - delivered = append(delivered, block) - return - } - tos.lock.Lock() - defer tos.lock.Unlock() - tos.inPendingBlocks[block.Hash] = struct{}{} - tos.pendingBlocks = append(tos.pendingBlocks, block) - if block.Position.Height == 0 { - tos.bootstrapChain[block.Position.ChainID] = struct{}{} - } - if uint32(len(tos.bootstrapChain)) == tos.numChains { - // Bootstrap mode. - delivered = tos.pendingBlocks - tos.syncDeliverySetIdx = 0 - for i := uint32(0); i < tos.numChains; i++ { - tos.syncHeight[i] = uint64(0) - } - } else { - maxDeliverySetIdx := -1 - // TODO(jimmy-dexon): below for loop can be optimized. - PendingBlockLoop: - for i, block := range tos.pendingBlocks { - idx, exist := tos.mapToDeliverySet[block.Hash] - if !exist { - continue - } - deliverySet := tos.deliverySet[idx] - // Check if all the blocks in deliverySet are in the pendingBlocks. - for _, dBlock := range deliverySet { - if _, exist := tos.inPendingBlocks[dBlock.Hash]; !exist { - continue PendingBlockLoop - } - } - if idx > maxDeliverySetIdx { - maxDeliverySetIdx = idx - } - // Check if all of the chains have delivered. - for _, dBlock := range deliverySet { - if h, exist := tos.syncHeight[dBlock.Position.ChainID]; exist { - if dBlock.Position.Height < h { - continue - } - } - tos.syncHeight[dBlock.Position.ChainID] = dBlock.Position.Height - } - if uint32(len(tos.syncHeight)) != tos.numChains { - continue - } - // Core is fully synced, it can start delivering blocks from idx. - tos.syncDeliverySetIdx = maxDeliverySetIdx - delivered = make([]*types.Block, 0, i) - break - } - if tos.syncDeliverySetIdx == -1 { - return - } - // Generating delivering blocks. - for i := maxDeliverySetIdx; i < len(tos.deliverySet); i++ { - deliverySet := tos.deliverySet[i] - sort.Sort(types.ByHash(deliverySet)) - for _, block := range deliverySet { - if block.Position.Height > tos.syncHeight[block.Position.ChainID] { - tos.syncHeight[block.Position.ChainID] = block.Position.Height - } - delivered = append(delivered, block) - } - } - // Flush remaining blocks. - for _, block := range tos.pendingBlocks { - if _, exist := tos.mapToDeliverySet[block.Hash]; exist { - continue - } - if block.Position.Height > tos.syncHeight[block.Position.ChainID] { - tos.syncHeight[block.Position.ChainID] = block.Position.Height - } - delivered = append(delivered, block) - } - } - // Clean internal data model to save memory. - tos.pendingBlocks = nil - tos.inPendingBlocks = nil - tos.bootstrapChain = nil - tos.pendingDeliveryBlocks = nil - tos.deliverySet = nil - tos.mapToDeliverySet = nil - return -} - -// The finalized block should be passed by the order of consensus height. -func (tos *totalOrderingSyncer) processFinalizedBlock(block *types.Block) { - tos.lock.Lock() - defer tos.lock.Unlock() - if len(tos.pendingDeliveryBlocks) > 0 { - if block.Hash.Less( - tos.pendingDeliveryBlocks[len(tos.pendingDeliveryBlocks)-1].Hash) { - // pendingDeliveryBlocks forms a deliverySet. - idx := len(tos.deliverySet) - tos.deliverySet[idx] = tos.pendingDeliveryBlocks - for _, block := range tos.pendingDeliveryBlocks { - tos.mapToDeliverySet[block.Hash] = idx - } - tos.pendingDeliveryBlocks = []*types.Block{} - } - } - tos.pendingDeliveryBlocks = append(tos.pendingDeliveryBlocks, block) -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering.go deleted file mode 100644 index a4778f593..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/total-ordering.go +++ /dev/null @@ -1,1355 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "errors" - "math" - "sort" - "sync" - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -const ( - infinity uint64 = math.MaxUint64 -) - -const ( - // TotalOrderingModeError returns mode error. - TotalOrderingModeError uint32 = iota - // TotalOrderingModeNormal returns mode normal. - TotalOrderingModeNormal - // TotalOrderingModeEarly returns mode early. - TotalOrderingModeEarly - // TotalOrderingModeFlush returns mode flush. - TotalOrderingModeFlush -) - -var ( - // ErrNotValidDAG would be reported when block subbmitted to totalOrdering - // didn't form a DAG. - ErrNotValidDAG = errors.New("not a valid dag") - // ErrFutureRoundDelivered means some blocks from later rounds are - // delivered, this means program error. - ErrFutureRoundDelivered = errors.New("future round delivered") - // ErrBlockFromPastRound means we receive some block from past round. - ErrBlockFromPastRound = errors.New("block from past round") - // ErrTotalOrderingHangs means total ordering hangs somewhere. - ErrTotalOrderingHangs = errors.New("total ordering hangs") - // ErrForwardAck means a block acking some blocks from newer round. - ErrForwardAck = errors.New("forward ack") - // ErrUnexpected means general (I'm lazy) errors. - ErrUnexpected = errors.New("unexpected") -) - -// totalOrderingConfig is the configuration for total ordering. -type totalOrderingConfig struct { - roundBasedConfig - // k represents the k in 'k-level total ordering'. - // In short, only block height equals to (global minimum height + k) - // would be taken into consideration. - k uint64 - // phi is a const to control how strong the leading preceding block - // should be. - phi uint64 - // chainNum is the count of chains. - numChains uint32 - // Is round cutting required? - isFlushRequired bool -} - -func (config *totalOrderingConfig) fromConfig( - roundID uint64, cfg *types.Config) { - config.k = uint64(cfg.K) - config.numChains = cfg.NumChains - config.phi = uint64(float32(cfg.NumChains-1)*cfg.PhiRatio + 1) - config.setupRoundBasedFields(roundID, cfg) -} - -func newGenesisTotalOrderingConfig( - dMoment time.Time, config *types.Config) *totalOrderingConfig { - c := &totalOrderingConfig{} - c.fromConfig(0, config) - c.setRoundBeginTime(dMoment) - return c -} - -func newTotalOrderingConfig( - prev *totalOrderingConfig, cur *types.Config) *totalOrderingConfig { - c := &totalOrderingConfig{} - c.fromConfig(prev.roundID+1, cur) - c.setRoundBeginTime(prev.roundEndTime) - prev.isFlushRequired = c.k != prev.k || - c.phi != prev.phi || - c.numChains != prev.numChains - return c -} - -// totalOrderingWinRecord caches which chains this candidate -// wins another one based on their height vector. -type totalOrderingWinRecord struct { - wins []int8 - count uint -} - -func (rec *totalOrderingWinRecord) reset() { - rec.count = 0 - for idx := range rec.wins { - rec.wins[idx] = 0 - } -} - -func newTotalOrderingWinRecord(numChains uint32) ( - rec *totalOrderingWinRecord) { - rec = &totalOrderingWinRecord{} - rec.reset() - rec.wins = make([]int8, numChains) - return -} - -// grade implements the 'grade' potential function described in white paper. -func (rec *totalOrderingWinRecord) grade( - numChains uint32, phi uint64, globalAnsLength uint64) int { - if uint64(rec.count) >= phi { - return 1 - } else if uint64(rec.count) < phi-uint64(numChains)+globalAnsLength { - return 0 - } else { - return -1 - } -} - -// totalOrderingHeightRecord records two things: -// - the minimum heiht of block from that chain acking this block. -// - the count of blocks from that chain acking this block. -type totalOrderingHeightRecord struct{ minHeight, count uint64 } - -// totalOrderingObjectCache caches objects for reuse. -// The target object is map because: -// - reuse map would prevent it grows during usage, when map grows, -// hashes of key would be recaculated, bucket reallocated, and values -// are copied. -// However, to reuse a map, we have no easy way to erase its content but -// iterating its keys and delete corresponding values. -type totalOrderingObjectCache struct { - ackedStatus [][]*totalOrderingHeightRecord - heightVectors [][]uint64 - winRecordContainers [][]*totalOrderingWinRecord - ackedVectors []map[common.Hash]struct{} - winRecordPool sync.Pool - numChains uint32 -} - -// newTotalOrderingObjectCache constructs an totalOrderingObjectCache -// instance. -func newTotalOrderingObjectCache(numChains uint32) *totalOrderingObjectCache { - return &totalOrderingObjectCache{ - winRecordPool: sync.Pool{ - New: func() interface{} { - return newTotalOrderingWinRecord(numChains) - }, - }, - numChains: numChains, - } -} - -// resize makes sure internal storage of totalOrdering instance can handle -// maximum possible numChains in future configs. -func (cache *totalOrderingObjectCache) resize(numChains uint32) { - // Basically, everything in cache needs to be cleaned. - if cache.numChains >= numChains { - return - } - cache.ackedStatus = nil - cache.heightVectors = nil - cache.winRecordContainers = nil - cache.ackedVectors = nil - cache.numChains = numChains - cache.winRecordPool = sync.Pool{ - New: func() interface{} { - return newTotalOrderingWinRecord(numChains) - }, - } -} - -// requestAckedStatus requests a structure to record acking status of one -// candidate (or a global view of acking status of pending set). -func (cache *totalOrderingObjectCache) requestAckedStatus() ( - acked []*totalOrderingHeightRecord) { - if len(cache.ackedStatus) == 0 { - acked = make([]*totalOrderingHeightRecord, cache.numChains) - for idx := range acked { - acked[idx] = &totalOrderingHeightRecord{count: 0} - } - } else { - acked, cache.ackedStatus = - cache.ackedStatus[len(cache.ackedStatus)-1], - cache.ackedStatus[:len(cache.ackedStatus)-1] - // Reset acked status. - for idx := range acked { - acked[idx].count = 0 - } - } - return -} - -// recycleAckedStatys recycles the structure to record acking status. -func (cache *totalOrderingObjectCache) recycleAckedStatus( - acked []*totalOrderingHeightRecord) { - // If the recycled objects supports lower numChains than we required, - // don't recycle it. - if uint32(len(acked)) != cache.numChains { - return - } - cache.ackedStatus = append(cache.ackedStatus, acked) -} - -// requestWinRecord requests an totalOrderingWinRecord instance. -func (cache *totalOrderingObjectCache) requestWinRecord() ( - win *totalOrderingWinRecord) { - win = cache.winRecordPool.Get().(*totalOrderingWinRecord) - win.reset() - return -} - -// recycleWinRecord recycles an totalOrderingWinRecord instance. -func (cache *totalOrderingObjectCache) recycleWinRecord( - win *totalOrderingWinRecord) { - if win == nil { - return - } - // If the recycled objects supports lower numChains than we required, - // don't recycle it. - if uint32(len(win.wins)) != cache.numChains { - return - } - cache.winRecordPool.Put(win) -} - -// requestHeightVector requests a structure to record acking heights -// of one candidate. -func (cache *totalOrderingObjectCache) requestHeightVector() (hv []uint64) { - if len(cache.heightVectors) == 0 { - hv = make([]uint64, cache.numChains) - } else { - hv, cache.heightVectors = - cache.heightVectors[len(cache.heightVectors)-1], - cache.heightVectors[:len(cache.heightVectors)-1] - } - for idx := range hv { - hv[idx] = infinity - } - return -} - -// recycleHeightVector recycles an instance to record acking heights -// of one candidate. -func (cache *totalOrderingObjectCache) recycleHeightVector(hv []uint64) { - // If the recycled objects supports lower numChains than we required, - // don't recycle it. - if uint32(len(hv)) != cache.numChains { - return - } - cache.heightVectors = append(cache.heightVectors, hv) -} - -// requestWinRecordContainer requests a map of totalOrderingWinRecord. -func (cache *totalOrderingObjectCache) requestWinRecordContainer() ( - con []*totalOrderingWinRecord) { - if len(cache.winRecordContainers) == 0 { - con = make([]*totalOrderingWinRecord, cache.numChains) - } else { - con, cache.winRecordContainers = - cache.winRecordContainers[len(cache.winRecordContainers)-1], - cache.winRecordContainers[:len(cache.winRecordContainers)-1] - for idx := range con { - con[idx] = nil - } - } - return -} - -// recycleWinRecordContainer recycles a map of totalOrderingWinRecord. -func (cache *totalOrderingObjectCache) recycleWinRecordContainer( - con []*totalOrderingWinRecord) { - // If the recycled objects supports lower numChains than we required, - // don't recycle it. - if uint32(len(con)) != cache.numChains { - return - } - cache.winRecordContainers = append(cache.winRecordContainers, con) -} - -// requestAckedVector requests an acked vector instance. -func (cache *totalOrderingObjectCache) requestAckedVector() ( - acked map[common.Hash]struct{}) { - if len(cache.ackedVectors) == 0 { - acked = make(map[common.Hash]struct{}) - } else { - acked, cache.ackedVectors = - cache.ackedVectors[len(cache.ackedVectors)-1], - cache.ackedVectors[:len(cache.ackedVectors)-1] - for k := range acked { - delete(acked, k) - } - } - return -} - -// recycleAckedVector recycles an acked vector instance. -func (cache *totalOrderingObjectCache) recycleAckedVector( - acked map[common.Hash]struct{}) { - if acked == nil { - return - } - cache.ackedVectors = append(cache.ackedVectors, acked) -} - -// totalOrderingCandidateInfo describes proceeding status for one candidate, -// including: -// - acked status as height records, which could keep 'how many blocks from -// one chain acking this candidate. -// - cached height vector, which valid height based on K-level used for -// comparison in 'grade' function. -// - cached result of grade function to other candidates. -// -// Height Record: -// When block A acks block B, all blocks proposed from the same proposer -// as block A with higher height would also acks block B. Therefore, -// we just need to record: -// - the minimum height of acking block from that proposer -// - count of acking blocks from that proposer -// to repsent the acking status for block A. -type totalOrderingCandidateInfo struct { - ackedStatus []*totalOrderingHeightRecord - cachedHeightVector []uint64 - winRecords []*totalOrderingWinRecord - hash common.Hash -} - -// newTotalOrderingCandidateInfo constructs an totalOrderingCandidateInfo -// instance. -func newTotalOrderingCandidateInfo( - candidateHash common.Hash, - objCache *totalOrderingObjectCache) *totalOrderingCandidateInfo { - return &totalOrderingCandidateInfo{ - ackedStatus: objCache.requestAckedStatus(), - winRecords: objCache.requestWinRecordContainer(), - hash: candidateHash, - } -} - -// clean clear information related to another candidate, which should be called -// when that candidate is selected as deliver set. -func (v *totalOrderingCandidateInfo) clean(otherCandidateChainID uint32) { - v.winRecords[otherCandidateChainID] = nil -} - -// recycle objects for later usage, this eases the loading of -// golangs' GC. -func (v *totalOrderingCandidateInfo) recycle( - objCache *totalOrderingObjectCache) { - if v.winRecords != nil { - for _, win := range v.winRecords { - objCache.recycleWinRecord(win) - } - objCache.recycleWinRecordContainer(v.winRecords) - } - if v.cachedHeightVector != nil { - objCache.recycleHeightVector(v.cachedHeightVector) - } - objCache.recycleAckedStatus(v.ackedStatus) -} - -// addBlock would update totalOrderingCandidateInfo, it's caller's duty -// to make sure the input block acutally acking the target block. -func (v *totalOrderingCandidateInfo) addBlock(b *types.Block) (err error) { - rec := v.ackedStatus[b.Position.ChainID] - if rec.count == 0 { - rec.minHeight = b.Position.Height - rec.count = 1 - } else { - if b.Position.Height < rec.minHeight { - err = ErrNotValidDAG - return - } - rec.count++ - } - return -} - -// getAckingNodeSetLength would generate the Acking Node Set and return its -// length. Only block height larger than -// -// global minimum height + k -// -// would be taken into consideration, ex. -// -// For some chain X: -// - the global minimum acking height = 1, -// - k = 1 -// then only block height >= 2 would be added to acking node set. -func (v *totalOrderingCandidateInfo) getAckingNodeSetLength( - global *totalOrderingCandidateInfo, - k uint64, - numChains uint32) (count uint64) { - var rec *totalOrderingHeightRecord - for idx, gRec := range global.ackedStatus[:numChains] { - if gRec.count == 0 { - continue - } - rec = v.ackedStatus[idx] - if rec.count == 0 { - continue - } - // This line would check if these two ranges would overlap: - // - (global minimum height + k, infinity) - // - (local minimum height, local minimum height + count - 1) - if rec.minHeight+rec.count-1 >= gRec.minHeight+k { - count++ - } - } - return -} - -// updateAckingHeightVector would cached acking height vector. -// -// Only block height equals to (global minimum block height + k) would be -// taken into consideration. -func (v *totalOrderingCandidateInfo) updateAckingHeightVector( - global *totalOrderingCandidateInfo, - k uint64, - dirtyChainIDs []int, - objCache *totalOrderingObjectCache) { - var ( - idx int - gRec, rec *totalOrderingHeightRecord - ) - // The reason not to merge the two loops is the iteration over map - // is expensive when chain count is large, iterating over dirty - // chains is cheaper. - // TODO(mission): merge the code in this if/else if the performance won't be - // downgraded when adding a function for the shared part. - if v.cachedHeightVector == nil { - // Generate height vector from scratch. - v.cachedHeightVector = objCache.requestHeightVector() - for idx, gRec = range global.ackedStatus { - if gRec.count <= k { - continue - } - rec = v.ackedStatus[idx] - if rec.count == 0 { - v.cachedHeightVector[idx] = infinity - } else if rec.minHeight <= gRec.minHeight+k { - // This check is sufficient to make sure the block height: - // - // gRec.minHeight + k - // - // would be included in this totalOrderingCandidateInfo. - v.cachedHeightVector[idx] = gRec.minHeight + k - } else { - v.cachedHeightVector[idx] = infinity - } - } - } else { - // Return the cached one, only update dirty fields. - for _, idx = range dirtyChainIDs { - gRec = global.ackedStatus[idx] - if gRec.count == 0 || gRec.count <= k { - v.cachedHeightVector[idx] = infinity - continue - } - rec = v.ackedStatus[idx] - if rec.count == 0 { - v.cachedHeightVector[idx] = infinity - } else if rec.minHeight <= gRec.minHeight+k { - v.cachedHeightVector[idx] = gRec.minHeight + k - } else { - v.cachedHeightVector[idx] = infinity - } - } - } - return -} - -// updateWinRecord setup win records between two candidates. -func (v *totalOrderingCandidateInfo) updateWinRecord( - otherChainID uint32, - other *totalOrderingCandidateInfo, - dirtyChainIDs []int, - objCache *totalOrderingObjectCache, - numChains uint32) { - var ( - idx int - height uint64 - ) - // The reason not to merge the two loops is the iteration over map - // is expensive when chain count is large, iterating over dirty - // chains is cheaper. - // TODO(mission): merge the code in this if/else if add a function won't - // affect the performance. - win := v.winRecords[otherChainID] - if win == nil { - win = objCache.requestWinRecord() - v.winRecords[otherChainID] = win - for idx, height = range v.cachedHeightVector[:numChains] { - if height == infinity { - continue - } - if other.cachedHeightVector[idx] == infinity { - win.wins[idx] = 1 - win.count++ - } - } - } else { - for _, idx = range dirtyChainIDs { - if v.cachedHeightVector[idx] == infinity { - if win.wins[idx] == 1 { - win.wins[idx] = 0 - win.count-- - } - continue - } - if other.cachedHeightVector[idx] == infinity { - if win.wins[idx] == 0 { - win.wins[idx] = 1 - win.count++ - } - } else { - if win.wins[idx] == 1 { - win.wins[idx] = 0 - win.count-- - } - } - } - } -} - -// totalOrderingBreakpoint is a record to store the height discontinuity -// on a chain. -type totalOrderingBreakpoint struct { - roundID uint64 - // height of last block in previous round. - lastHeight uint64 -} - -// totalOrderingGroupVector keeps global status of current pending set. -type totalOrderingGlobalVector struct { - // blocks stores all blocks grouped by their proposers and - // sorted by their block height. - // - // TODO(mission): the way we use this slice would make it reallocate - // frequently. - blocks [][]*types.Block - - // breakpoints caches rounds for chains that blocks' height on them are - // not continuous. Ex. - // ChainID Round Height - // 1 0 0 - // 1 0 1 - // 1 1 2 - // 1 1 3 - // 1 1 4 - // 1 3 0 <- a breakpoint for round 3 would be cached - // for chain 1 as (roundID=1, lastHeight=4). - breakpoints [][]*totalOrderingBreakpoint - - // curRound caches the last round ID used to purge breakpoints. - curRound uint64 - - // tips records the last seen block for each chain. - tips []*types.Block - - // cachedCandidateInfo is an totalOrderingCandidateInfo instance, - // which is just used for actual candidates to calculate height vector. - cachedCandidateInfo *totalOrderingCandidateInfo -} - -func newTotalOrderingGlobalVector(numChains uint32) *totalOrderingGlobalVector { - return &totalOrderingGlobalVector{ - blocks: make([][]*types.Block, numChains), - tips: make([]*types.Block, numChains), - breakpoints: make([][]*totalOrderingBreakpoint, numChains), - } -} - -func (global *totalOrderingGlobalVector) resize(numChains uint32) { - if len(global.blocks) >= int(numChains) { - return - } - // Resize blocks. - newBlocks := make([][]*types.Block, numChains) - copy(newBlocks, global.blocks) - global.blocks = newBlocks - // Resize breakpoints. - newBreakPoints := make([][]*totalOrderingBreakpoint, numChains) - copy(newBreakPoints, global.breakpoints) - global.breakpoints = newBreakPoints - // Resize tips. - newTips := make([]*types.Block, numChains) - copy(newTips, global.tips) - global.tips = newTips -} - -func (global *totalOrderingGlobalVector) switchRound(roundID uint64) { - if global.curRound+1 != roundID { - panic(ErrUnexpected) - } - global.curRound = roundID - for chainID, bs := range global.breakpoints { - if len(bs) == 0 { - continue - } - if bs[0].roundID == roundID { - global.breakpoints[chainID] = bs[1:] - } - } -} - -func (global *totalOrderingGlobalVector) prepareHeightRecord( - candidate *types.Block, - info *totalOrderingCandidateInfo, - acked map[common.Hash]struct{}) { - var ( - chainID = candidate.Position.ChainID - breakpoints = global.breakpoints[chainID] - breakpoint *totalOrderingBreakpoint - rec *totalOrderingHeightRecord - ) - // Setup height record for own chain. - rec = &totalOrderingHeightRecord{ - minHeight: candidate.Position.Height, - } - if len(breakpoints) == 0 { - rec.count = uint64(len(global.blocks[chainID])) - } else { - rec.count = breakpoints[0].lastHeight - candidate.Position.Height + 1 - } - info.ackedStatus[chainID] = rec - if acked == nil { - return - } - for idx, blocks := range global.blocks { - if idx == int(candidate.Position.ChainID) { - continue - } - breakpoint = nil - if len(global.breakpoints[idx]) > 0 { - breakpoint = global.breakpoints[idx][0] - } - for i, b := range blocks { - if breakpoint != nil && b.Position.Round >= breakpoint.roundID { - break - } - if _, acked := acked[b.Hash]; !acked { - continue - } - // If this block acks this candidate, all newer blocks - // from the same chain also 'indirect' acks it. - rec = info.ackedStatus[idx] - rec.minHeight = b.Position.Height - if breakpoint == nil { - rec.count = uint64(len(blocks) - i) - } else { - rec.count = breakpoint.lastHeight - b.Position.Height + 1 - } - break - } - } - -} - -func (global *totalOrderingGlobalVector) addBlock( - b *types.Block) (pos int, pending bool, err error) { - curPosition := b.Position - tip := global.tips[curPosition.ChainID] - pos = len(global.blocks[curPosition.ChainID]) - if tip != nil { - // Perform light weight sanity check based on tip. - lastPosition := tip.Position - if lastPosition.Round > curPosition.Round { - err = ErrNotValidDAG - return - } - if DiffUint64(lastPosition.Round, curPosition.Round) > 1 { - if curPosition.Height != 0 { - err = ErrNotValidDAG - return - } - // Add breakpoint. - global.breakpoints[curPosition.ChainID] = append( - global.breakpoints[curPosition.ChainID], - &totalOrderingBreakpoint{ - roundID: curPosition.Round, - lastHeight: lastPosition.Height, - }) - } else { - if curPosition.Height != lastPosition.Height+1 { - err = ErrNotValidDAG - return - } - } - } else { - if curPosition.Round < global.curRound { - err = ErrBlockFromPastRound - return - } - if curPosition.Round > global.curRound { - // Add breakpoint. - global.breakpoints[curPosition.ChainID] = append( - global.breakpoints[curPosition.ChainID], - &totalOrderingBreakpoint{ - roundID: curPosition.Round, - lastHeight: 0, - }) - } - } - breakpoints := global.breakpoints[b.Position.ChainID] - pending = len(breakpoints) > 0 && breakpoints[0].roundID <= b.Position.Round - global.blocks[b.Position.ChainID] = append( - global.blocks[b.Position.ChainID], b) - global.tips[b.Position.ChainID] = b - return -} - -// updateCandidateInfo udpate cached candidate info. -func (global *totalOrderingGlobalVector) updateCandidateInfo( - dirtyChainIDs []int, objCache *totalOrderingObjectCache) { - var ( - idx int - blocks []*types.Block - block *types.Block - info *totalOrderingCandidateInfo - rec *totalOrderingHeightRecord - breakpoint *totalOrderingBreakpoint - ) - if global.cachedCandidateInfo == nil { - info = newTotalOrderingCandidateInfo(common.Hash{}, objCache) - for idx, blocks = range global.blocks { - if len(blocks) == 0 { - continue - } - rec = info.ackedStatus[idx] - if len(global.breakpoints[idx]) > 0 { - breakpoint = global.breakpoints[idx][0] - block = blocks[0] - if block.Position.Round >= breakpoint.roundID { - continue - } - rec.minHeight = block.Position.Height - rec.count = breakpoint.lastHeight - block.Position.Height + 1 - } else { - rec.minHeight = blocks[0].Position.Height - rec.count = uint64(len(blocks)) - } - } - global.cachedCandidateInfo = info - } else { - info = global.cachedCandidateInfo - for _, idx = range dirtyChainIDs { - blocks = global.blocks[idx] - if len(blocks) == 0 { - info.ackedStatus[idx].count = 0 - continue - } - rec = info.ackedStatus[idx] - if len(global.breakpoints[idx]) > 0 { - breakpoint = global.breakpoints[idx][0] - block = blocks[0] - if block.Position.Round >= breakpoint.roundID { - continue - } - rec.minHeight = block.Position.Height - rec.count = breakpoint.lastHeight - block.Position.Height + 1 - } else { - rec.minHeight = blocks[0].Position.Height - rec.count = uint64(len(blocks)) - } - } - } - return -} - -// totalOrdering represent a process unit to handle total ordering -// for blocks. -type totalOrdering struct { - // pendings stores blocks awaiting to be ordered. - pendings map[common.Hash]*types.Block - - // The round of config used when performing total ordering. - curRound uint64 - - // duringFlush is a flag to switch the flush mode and normal mode. - duringFlush bool - - // flushReadyChains checks if the last block of that chain arrived. Once - // last blocks from all chains in current config are arrived, we can - // perform flush. - flushReadyChains map[uint32]struct{} - - // flush is a map to record which blocks are already flushed. - flushed map[uint32]struct{} - - // globalVector group all pending blocks by proposers and - // sort them by block height. This structure is helpful when: - // - // - build global height vector - // - picking candidates next round - globalVector *totalOrderingGlobalVector - - // candidates caches result of potential function during generating - // preceding sets. - candidates []*totalOrderingCandidateInfo - - // acked cache the 'block A acked by block B' relation by - // keeping a record in acked[A.Hash][B.Hash] - acked map[common.Hash]map[common.Hash]struct{} - - // dirtyChainIDs records which chainID that should be updated - // for all cached status (win record, acking status). - dirtyChainIDs []int - - // objCache caches allocated objects, like map. - objCache *totalOrderingObjectCache - - // candidateChainMapping keeps a mapping from candidate's hash to - // their chain IDs. - candidateChainMapping map[uint32]common.Hash - - // candidateChainIDs records chain ID of all candidates. - candidateChainIDs []uint32 - - // configs keeps configuration for each round in continuous way. - configs []*totalOrderingConfig -} - -// newTotalOrdering constructs an totalOrdering instance. -func newTotalOrdering(config *totalOrderingConfig) *totalOrdering { - globalVector := newTotalOrderingGlobalVector(config.numChains) - objCache := newTotalOrderingObjectCache(config.numChains) - candidates := make([]*totalOrderingCandidateInfo, config.numChains) - to := &totalOrdering{ - pendings: make(map[common.Hash]*types.Block), - globalVector: globalVector, - dirtyChainIDs: make([]int, 0, config.numChains), - acked: make(map[common.Hash]map[common.Hash]struct{}), - objCache: objCache, - candidateChainMapping: make(map[uint32]common.Hash), - candidates: candidates, - candidateChainIDs: make([]uint32, 0, config.numChains), - curRound: config.roundID, - } - to.configs = []*totalOrderingConfig{config} - return to -} - -// appendConfig add new configs for upcoming rounds. If you add a config for -// round R, next time you can only add the config for round R+1. -func (to *totalOrdering) appendConfig( - round uint64, config *types.Config) error { - if round != uint64(len(to.configs))+to.configs[0].roundID { - return ErrRoundNotIncreasing - } - to.configs = append( - to.configs, - newTotalOrderingConfig(to.configs[len(to.configs)-1], config)) - // Resize internal structures. - to.globalVector.resize(config.NumChains) - to.objCache.resize(config.NumChains) - if int(config.NumChains) > len(to.candidates) { - newCandidates := make([]*totalOrderingCandidateInfo, config.NumChains) - copy(newCandidates, to.candidates) - to.candidates = newCandidates - } - return nil -} - -func (to *totalOrdering) switchRound() { - to.curRound++ - to.globalVector.switchRound(to.curRound) -} - -// buildBlockRelation populates the acked according their acking relationships. -// This function would update all blocks implcitly acked by input block -// recursively. -func (to *totalOrdering) buildBlockRelation(b *types.Block) { - var ( - curBlock, nextBlock *types.Block - ack common.Hash - acked map[common.Hash]struct{} - exists, alreadyPopulated bool - toCheck = []*types.Block{b} - ) - for { - if len(toCheck) == 0 { - break - } - curBlock, toCheck = toCheck[len(toCheck)-1], toCheck[:len(toCheck)-1] - if curBlock.Position.Round > b.Position.Round { - // It's illegal for a block to acking some block from future - // round, this rule should be promised before delivering to - // total ordering. - panic(ErrForwardAck) - } - for _, ack = range curBlock.Acks { - if acked, exists = to.acked[ack]; !exists { - acked = to.objCache.requestAckedVector() - to.acked[ack] = acked - } - // This means we've walked this block already. - if _, alreadyPopulated = acked[b.Hash]; alreadyPopulated { - continue - } - acked[b.Hash] = struct{}{} - // See if we need to go forward. - if nextBlock, exists = to.pendings[ack]; !exists { - continue - } else { - toCheck = append(toCheck, nextBlock) - } - } - } -} - -// clean a block from working set. This behaviour would prevent -// our memory usage growing infinity. -func (to *totalOrdering) clean(b *types.Block) { - var ( - h = b.Hash - chainID = b.Position.ChainID - ) - to.objCache.recycleAckedVector(to.acked[h]) - delete(to.acked, h) - delete(to.pendings, h) - to.candidates[chainID].recycle(to.objCache) - to.candidates[chainID] = nil - delete(to.candidateChainMapping, chainID) - // Remove this candidate from candidate IDs. - to.candidateChainIDs = - removeFromSortedUint32Slice(to.candidateChainIDs, chainID) - // Clear records of this candidate from other candidates. - for _, idx := range to.candidateChainIDs { - to.candidates[idx].clean(chainID) - } -} - -// updateVectors is a helper function to update all cached vectors. -func (to *totalOrdering) updateVectors(b *types.Block) (pos int, err error) { - var ( - candidateHash common.Hash - chainID uint32 - acked bool - pending bool - ) - // Update global height vector - if pos, pending, err = to.globalVector.addBlock(b); err != nil { - return - } - if to.duringFlush { - // It makes no sense to calculate potential functions of total ordering - // when flushing would be happened. - return - } - if pending { - // The chain of this block contains breakpoints, which means their - // height are not continuous. This implementation of DEXON total - // ordering algorithm assumes the height of blocks in working set should - // be continuous. - // - // To workaround this issue, when block arrived after breakpoints, - // their information would not be contributed to current working set. - // This mechanism works because we switch rounds by flushing and - // reset the whole working set. - return - } - // Update acking status of candidates. - for chainID, candidateHash = range to.candidateChainMapping { - if _, acked = to.acked[candidateHash][b.Hash]; !acked { - continue - } - if err = to.candidates[chainID].addBlock(b); err != nil { - return - } - } - return -} - -// prepareCandidate is a helper function to -// build totalOrderingCandidateInfo for new candidate. -func (to *totalOrdering) prepareCandidate(candidate *types.Block) { - var ( - info = newTotalOrderingCandidateInfo(candidate.Hash, to.objCache) - chainID = candidate.Position.ChainID - ) - to.candidates[chainID] = info - to.candidateChainMapping[chainID] = candidate.Hash - // Add index to slot to allocated list, make sure the modified list sorted. - to.candidateChainIDs = append(to.candidateChainIDs, chainID) - sort.Slice(to.candidateChainIDs, func(i, j int) bool { - return to.candidateChainIDs[i] < to.candidateChainIDs[j] - }) - to.globalVector.prepareHeightRecord( - candidate, info, to.acked[candidate.Hash]) - return -} - -// isAckOnlyPrecedings is a helper function to check if a block -// only contain acks to delivered blocks. -func (to *totalOrdering) isAckOnlyPrecedings(b *types.Block) bool { - for _, ack := range b.Acks { - if _, pending := to.pendings[ack]; pending { - return false - } - } - return true -} - -// output is a helper function to finish the delivery of -// deliverable preceding set. -func (to *totalOrdering) output( - precedings map[common.Hash]struct{}, - numChains uint32) (ret []*types.Block) { - for p := range precedings { - // Remove the first element from corresponding blockVector. - b := to.pendings[p] - chainID := b.Position.ChainID - // TODO(mission): This way to use slice makes it reallocate frequently. - to.globalVector.blocks[int(chainID)] = - to.globalVector.blocks[int(chainID)][1:] - ret = append(ret, b) - // Remove block relations. - to.clean(b) - to.dirtyChainIDs = append(to.dirtyChainIDs, int(chainID)) - } - sort.Sort(types.ByHash(ret)) - // Find new candidates from tip of globalVector of each chain. - // The complexity here is O(N^2logN). - // TODO(mission): only those tips that acking some blocks in - // the devliered set should be checked. This - // improvment related to the latency introduced by K. - for chainID, blocks := range to.globalVector.blocks[:numChains] { - if len(blocks) == 0 { - continue - } - if _, picked := to.candidateChainMapping[uint32(chainID)]; picked { - continue - } - if !to.isAckOnlyPrecedings(blocks[0]) { - continue - } - // Build totalOrderingCandidateInfo for new candidate. - to.prepareCandidate(blocks[0]) - } - return ret -} - -// generateDeliverSet would: -// - generate preceding set -// - check if the preceding set deliverable by checking potential function -func (to *totalOrdering) generateDeliverSet() ( - delivered map[common.Hash]struct{}, mode uint32) { - var ( - chainID, otherChainID uint32 - info, otherInfo *totalOrderingCandidateInfo - precedings = make(map[uint32]struct{}) - cfg = to.configs[to.curRound-to.configs[0].roundID] - ) - mode = TotalOrderingModeNormal - to.globalVector.updateCandidateInfo(to.dirtyChainIDs, to.objCache) - globalInfo := to.globalVector.cachedCandidateInfo - for _, chainID = range to.candidateChainIDs { - to.candidates[chainID].updateAckingHeightVector( - globalInfo, cfg.k, to.dirtyChainIDs, to.objCache) - } - // Update winning records for each candidate. - // TODO(mission): It's not reasonable to - // request one routine for each candidate, the context - // switch rate would be high. - var wg sync.WaitGroup - wg.Add(len(to.candidateChainIDs)) - for _, chainID := range to.candidateChainIDs { - info = to.candidates[chainID] - go func(can uint32, canInfo *totalOrderingCandidateInfo) { - for _, otherChainID := range to.candidateChainIDs { - if can == otherChainID { - continue - } - canInfo.updateWinRecord( - otherChainID, - to.candidates[otherChainID], - to.dirtyChainIDs, - to.objCache, - cfg.numChains) - } - wg.Done() - }(chainID, info) - } - wg.Wait() - // Reset dirty chains. - to.dirtyChainIDs = to.dirtyChainIDs[:0] - // TODO(mission): ANS should be bound by current numChains. - globalAnsLength := globalInfo.getAckingNodeSetLength( - globalInfo, cfg.k, cfg.numChains) -CheckNextCandidateLoop: - for _, chainID = range to.candidateChainIDs { - info = to.candidates[chainID] - for _, otherChainID = range to.candidateChainIDs { - if chainID == otherChainID { - continue - } - otherInfo = to.candidates[otherChainID] - // TODO(mission): grade should be bound by current numChains. - if otherInfo.winRecords[chainID].grade( - cfg.numChains, cfg.phi, globalAnsLength) != 0 { - continue CheckNextCandidateLoop - } - } - precedings[chainID] = struct{}{} - } - if len(precedings) == 0 { - return - } - // internal is a helper function to verify internal stability. - internal := func() bool { - var ( - isPreceding, beaten bool - p uint32 - ) - for _, chainID = range to.candidateChainIDs { - if _, isPreceding = precedings[chainID]; isPreceding { - continue - } - beaten = false - for p = range precedings { - // TODO(mission): grade should be bound by current numChains. - if beaten = to.candidates[p].winRecords[chainID].grade( - cfg.numChains, cfg.phi, globalAnsLength) == 1; beaten { - break - } - } - if !beaten { - return false - } - } - return true - } - // checkAHV is a helper function to verify external stability. - // It would make sure some preceding block is strong enough - // to lead the whole preceding set. - checkAHV := func() bool { - var ( - height, count uint64 - p uint32 - ) - for p = range precedings { - count = 0 - info = to.candidates[p] - for _, height = range info.cachedHeightVector { - if height != infinity { - count++ - if count > cfg.phi { - return true - } - } - } - } - return false - } - // checkANS is a helper function to verify external stability. - // It would make sure all preceding blocks are strong enough - // to be delivered. - checkANS := func() bool { - var chainAnsLength uint64 - for p := range precedings { - // TODO(mission): ANS should be bound by current numChains. - chainAnsLength = to.candidates[p].getAckingNodeSetLength( - globalInfo, cfg.k, cfg.numChains) - if uint64(chainAnsLength) < uint64(cfg.numChains)-cfg.phi { - return false - } - } - return true - } - // If all chains propose enough blocks, we should force - // to deliver since the whole picture of the DAG is revealed. - if globalAnsLength != uint64(cfg.numChains) { - // Check internal stability first. - if !internal() { - return - } - - // The whole picture is not ready, we need to check if - // exteranl stability is met, and we can deliver earlier. - if checkAHV() && checkANS() { - mode = TotalOrderingModeEarly - } else { - return - } - } - delivered = make(map[common.Hash]struct{}) - for p := range precedings { - delivered[to.candidates[p].hash] = struct{}{} - } - return -} - -// flushBlocks flushes blocks. -func (to *totalOrdering) flushBlocks( - b *types.Block) (flushed []*types.Block, mode uint32, err error) { - cfg := to.configs[to.curRound-to.configs[0].roundID] - mode = TotalOrderingModeFlush - if cfg.isValidLastBlock(b) { - to.flushReadyChains[b.Position.ChainID] = struct{}{} - } - // Flush blocks until last blocks from all chains are arrived. - if len(to.flushReadyChains) < int(cfg.numChains) { - return - } - if len(to.flushReadyChains) > int(cfg.numChains) { - // This line should never be reached. - err = ErrFutureRoundDelivered - return - } - // Dump all blocks in this round. - for { - if len(to.flushed) == int(cfg.numChains) { - break - } - // Dump all candidates without checking potential function. - flushedHashes := make(map[common.Hash]struct{}) - for _, chainID := range to.candidateChainIDs { - candidateBlock := to.pendings[to.candidates[chainID].hash] - if candidateBlock.Position.Round > to.curRound { - continue - } - flushedHashes[candidateBlock.Hash] = struct{}{} - } - if len(flushedHashes) == 0 { - err = ErrTotalOrderingHangs - return - } - flushedBlocks := to.output(flushedHashes, cfg.numChains) - for _, b := range flushedBlocks { - if !cfg.isValidLastBlock(b) { - continue - } - to.flushed[b.Position.ChainID] = struct{}{} - } - flushed = append(flushed, flushedBlocks...) - } - // Switch back to normal mode: delivered by DEXON total ordering algorithm. - to.duringFlush = false - to.flushed = make(map[uint32]struct{}) - to.flushReadyChains = make(map[uint32]struct{}) - // Clean all cached intermediate stats. - for idx := range to.candidates { - if to.candidates[idx] == nil { - continue - } - to.candidates[idx].recycle(to.objCache) - to.candidates[idx] = nil - } - to.dirtyChainIDs = nil - to.candidateChainMapping = make(map[uint32]common.Hash) - to.candidateChainIDs = nil - to.globalVector.cachedCandidateInfo = nil - to.switchRound() - // Force to pick new candidates. - numChains := to.configs[to.curRound-to.configs[0].roundID].numChains - to.output(map[common.Hash]struct{}{}, numChains) - return -} - -// deliverBlocks delivers blocks by DEXON total ordering algorithm. -func (to *totalOrdering) deliverBlocks() ( - delivered []*types.Block, mode uint32, err error) { - hashes, mode := to.generateDeliverSet() - cfg := to.configs[to.curRound-to.configs[0].roundID] - // output precedings - delivered = to.output(hashes, cfg.numChains) - // Check if any block in delivered set are the last block in this round - // of that chain. If yes, flush or round-switching would be performed. - for _, b := range delivered { - if b.Position.Round > to.curRound { - err = ErrFutureRoundDelivered - return - } - if !cfg.isValidLastBlock(b) { - continue - } - if cfg.isFlushRequired { - // Switch to flush mode. - to.duringFlush = true - to.flushReadyChains = make(map[uint32]struct{}) - to.flushed = make(map[uint32]struct{}) - } else { - // Switch round directly. - to.switchRound() - } - break - } - if to.duringFlush { - // Make sure last blocks from all chains are marked as 'flushed'. - for _, b := range delivered { - if !cfg.isValidLastBlock(b) { - continue - } - to.flushed[b.Position.ChainID] = struct{}{} - } - // Some last blocks for the round to be flushed might not be delivered - // yet. - for _, tip := range to.globalVector.tips[:cfg.numChains] { - if tip.Position.Round > to.curRound || cfg.isValidLastBlock(tip) { - to.flushReadyChains[tip.Position.ChainID] = struct{}{} - } - } - } - return -} - -// processBlock is the entry point of totalOrdering. -func (to *totalOrdering) processBlock( - b *types.Block) ([]*types.Block, uint32, error) { - // NOTE: I assume the block 'b' is already safe for total ordering. - // That means, all its acking blocks are during/after - // total ordering stage. - cfg := to.configs[to.curRound-to.configs[0].roundID] - to.pendings[b.Hash] = b - to.buildBlockRelation(b) - pos, err := to.updateVectors(b) - if err != nil { - return nil, uint32(0), err - } - // Mark the proposer of incoming block as dirty. - if b.Position.ChainID < cfg.numChains { - to.dirtyChainIDs = append(to.dirtyChainIDs, int(b.Position.ChainID)) - _, picked := to.candidateChainMapping[b.Position.ChainID] - if pos == 0 && !picked { - if to.isAckOnlyPrecedings(b) { - to.prepareCandidate(b) - } - } - } - if to.duringFlush { - return to.flushBlocks(b) - } - return to.deliverBlocks() -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block-randomness.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block-randomness.go deleted file mode 100644 index 1eaa3e398..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block-randomness.go +++ /dev/null @@ -1,43 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package types - -import ( - "fmt" - - "github.com/dexon-foundation/dexon-consensus/common" -) - -// AgreementResult describes an agremeent result. -type AgreementResult struct { - BlockHash common.Hash `json:"block_hash"` - Position Position `json:"position"` - Votes []Vote `json:"votes"` -} - -func (r *AgreementResult) String() string { - return fmt.Sprintf( - "agreementResult[%s:%s]", r.BlockHash, &r.Position) -} - -// BlockRandomnessResult describes a block randomness result -type BlockRandomnessResult struct { - BlockHash common.Hash `json:"block_hash"` - Position Position `json:"position"` - Randomness []byte `json:"randomness"` -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block.go deleted file mode 100644 index bde07d518..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/block.go +++ /dev/null @@ -1,341 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -// TODO(jimmy-dexon): remove comments of WitnessAck before open source. - -package types - -import ( - "bytes" - "fmt" - "io" - "sort" - "sync" - "time" - - "github.com/dexon-foundation/dexon/rlp" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" -) - -// BlockVerifyStatus is the return code for core.Application.VerifyBlock -type BlockVerifyStatus int - -// Enums for return value of core.Application.VerifyBlock. -const ( - // VerifyOK: Block is verified. - VerifyOK BlockVerifyStatus = iota - // VerifyRetryLater: Block is unable to be verified at this moment. - // Try again later. - VerifyRetryLater - // VerifyInvalidBlock: Block is an invalid one. - VerifyInvalidBlock -) - -var ( - // blockPool is the blocks cache to reuse allocated blocks. - blockPool = sync.Pool{ - New: func() interface{} { - return &Block{} - }, - } -) - -type rlpTimestamp struct { - time.Time -} - -func (t *rlpTimestamp) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, uint64(t.UTC().UnixNano())) -} - -func (t *rlpTimestamp) DecodeRLP(s *rlp.Stream) error { - var nano uint64 - err := s.Decode(&nano) - if err == nil { - sec := int64(nano) / 1000000000 - nsec := int64(nano) % 1000000000 - t.Time = time.Unix(sec, nsec).UTC() - } - return err -} - -// FinalizationResult represents the result of DEXON consensus algorithm. -type FinalizationResult struct { - ParentHash common.Hash `json:"parent_hash"` - Randomness []byte `json:"randomness"` - Timestamp time.Time `json:"timestamp"` - Height uint64 `json:"height"` -} - -type rlpFinalizationResult struct { - ParentHash common.Hash - Randomness []byte - Timestamp *rlpTimestamp - Height uint64 -} - -// EncodeRLP implements rlp.Encoder -func (f *FinalizationResult) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, &rlpFinalizationResult{ - ParentHash: f.ParentHash, - Randomness: f.Randomness, - Timestamp: &rlpTimestamp{f.Timestamp}, - Height: f.Height, - }) -} - -// DecodeRLP implements rlp.Decoder -func (f *FinalizationResult) DecodeRLP(s *rlp.Stream) error { - var dec rlpFinalizationResult - err := s.Decode(&dec) - if err == nil { - *f = FinalizationResult{ - ParentHash: dec.ParentHash, - Randomness: dec.Randomness, - Timestamp: dec.Timestamp.Time, - Height: dec.Height, - } - } - return err -} - -// Witness represents the consensus information on the compaction chain. -type Witness struct { - Height uint64 `json:"height"` - Data []byte `json:"data"` -} - -// RecycleBlock put unused block into cache, which might be reused if -// not garbage collected. -func RecycleBlock(b *Block) { - blockPool.Put(b) -} - -// NewBlock initiate a block. -func NewBlock() (b *Block) { - b = blockPool.Get().(*Block) - b.Acks = b.Acks[:0] - return -} - -// Block represents a single event broadcasted on the network. -type Block struct { - ProposerID NodeID `json:"proposer_id"` - ParentHash common.Hash `json:"parent_hash"` - Hash common.Hash `json:"hash"` - Position Position `json:"position"` - Timestamp time.Time `json:"timestamp"` - Acks common.SortedHashes `json:"acks"` - Payload []byte `json:"payload"` - PayloadHash common.Hash `json:"payload_hash"` - Witness Witness `json:"witness"` - Finalization FinalizationResult `json:"finalization"` - Signature crypto.Signature `json:"signature"` - - CRSSignature crypto.Signature `json:"crs_signature"` -} - -type rlpBlock struct { - ProposerID NodeID - ParentHash common.Hash - Hash common.Hash - Position Position - Timestamp *rlpTimestamp - Acks common.SortedHashes - Payload []byte - PayloadHash common.Hash - Witness *Witness - Finalization *FinalizationResult - Signature crypto.Signature - - CRSSignature crypto.Signature -} - -// EncodeRLP implements rlp.Encoder -func (b *Block) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, rlpBlock{ - ProposerID: b.ProposerID, - ParentHash: b.ParentHash, - Hash: b.Hash, - Position: b.Position, - Timestamp: &rlpTimestamp{b.Timestamp}, - Acks: b.Acks, - Payload: b.Payload, - PayloadHash: b.PayloadHash, - Witness: &b.Witness, - Finalization: &b.Finalization, - Signature: b.Signature, - CRSSignature: b.CRSSignature, - }) -} - -// DecodeRLP implements rlp.Decoder -func (b *Block) DecodeRLP(s *rlp.Stream) error { - var dec rlpBlock - err := s.Decode(&dec) - if err == nil { - *b = Block{ - ProposerID: dec.ProposerID, - ParentHash: dec.ParentHash, - Hash: dec.Hash, - Position: dec.Position, - Timestamp: dec.Timestamp.Time, - Acks: dec.Acks, - Payload: dec.Payload, - PayloadHash: dec.PayloadHash, - Witness: *dec.Witness, - Finalization: *dec.Finalization, - Signature: dec.Signature, - CRSSignature: dec.CRSSignature, - } - } - return err -} - -func (b *Block) String() string { - return fmt.Sprintf("Block(%v:%d:%d)", b.Hash.String()[:6], - b.Position.ChainID, b.Position.Height) -} - -// Clone returns a deep copy of a block. -func (b *Block) Clone() (bcopy *Block) { - bcopy = NewBlock() - bcopy.ProposerID = b.ProposerID - bcopy.ParentHash = b.ParentHash - bcopy.Hash = b.Hash - bcopy.Position.Round = b.Position.Round - bcopy.Position.ChainID = b.Position.ChainID - bcopy.Position.Height = b.Position.Height - bcopy.Signature = b.Signature.Clone() - bcopy.CRSSignature = b.CRSSignature.Clone() - bcopy.Finalization.ParentHash = b.Finalization.ParentHash - bcopy.Finalization.Timestamp = b.Finalization.Timestamp - bcopy.Finalization.Height = b.Finalization.Height - bcopy.Witness.Height = b.Witness.Height - bcopy.Witness.Data = make([]byte, len(b.Witness.Data)) - copy(bcopy.Witness.Data, b.Witness.Data) - bcopy.Timestamp = b.Timestamp - bcopy.Acks = make(common.SortedHashes, len(b.Acks)) - copy(bcopy.Acks, b.Acks) - bcopy.Payload = make([]byte, len(b.Payload)) - copy(bcopy.Payload, b.Payload) - bcopy.PayloadHash = b.PayloadHash - bcopy.Finalization.Randomness = make([]byte, len(b.Finalization.Randomness)) - copy(bcopy.Finalization.Randomness, b.Finalization.Randomness) - return -} - -// IsGenesis checks if the block is a genesisBlock -func (b *Block) IsGenesis() bool { - return b.Position.Height == 0 && b.ParentHash == common.Hash{} -} - -// IsFinalized checks if the finalization data is ready. -func (b *Block) IsFinalized() bool { - return b.Finalization.Height != 0 -} - -// IsEmpty checks if the block is an 'empty block'. -func (b *Block) IsEmpty() bool { - return b.ProposerID.Hash == common.Hash{} -} - -// IsAcking checks if a block acking another by it's hash. -func (b *Block) IsAcking(hash common.Hash) bool { - idx := sort.Search(len(b.Acks), func(i int) bool { - return bytes.Compare(b.Acks[i][:], hash[:]) >= 0 - }) - return !(idx == len(b.Acks) || b.Acks[idx] != hash) -} - -// ByHash is the helper type for sorting slice of blocks by hash. -type ByHash []*Block - -func (b ByHash) Len() int { - return len(b) -} - -func (b ByHash) Less(i int, j int) bool { - return bytes.Compare([]byte(b[i].Hash[:]), []byte(b[j].Hash[:])) == -1 -} - -func (b ByHash) Swap(i int, j int) { - b[i], b[j] = b[j], b[i] -} - -// ByPosition is the helper type for sorting slice of blocks by position. -type ByPosition []*Block - -// Len implements Len method in sort.Sort interface. -func (bs ByPosition) Len() int { - return len(bs) -} - -// Less implements Less method in sort.Sort interface. -func (bs ByPosition) Less(i int, j int) bool { - return bs[j].Position.Newer(&bs[i].Position) -} - -// Swap implements Swap method in sort.Sort interface. -func (bs ByPosition) Swap(i int, j int) { - bs[i], bs[j] = bs[j], bs[i] -} - -// Push implements Push method in heap interface. -func (bs *ByPosition) Push(x interface{}) { - *bs = append(*bs, x.(*Block)) -} - -// Pop implements Pop method in heap interface. -func (bs *ByPosition) Pop() (ret interface{}) { - n := len(*bs) - *bs, ret = (*bs)[0:n-1], (*bs)[n-1] - return -} - -// ByFinalizationHeight is the helper type for sorting slice of blocks by -// finalization height. -type ByFinalizationHeight []*Block - -// Len implements Len method in sort.Sort interface. -func (bs ByFinalizationHeight) Len() int { - return len(bs) -} - -// Less implements Less method in sort.Sort interface. -func (bs ByFinalizationHeight) Less(i int, j int) bool { - return bs[i].Finalization.Height < bs[j].Finalization.Height -} - -// Swap implements Swap method in sort.Sort interface. -func (bs ByFinalizationHeight) Swap(i int, j int) { - bs[i], bs[j] = bs[j], bs[i] -} - -// Push implements Push method in heap interface. -func (bs *ByFinalizationHeight) Push(x interface{}) { - *bs = append(*bs, x.(*Block)) -} - -// Pop implements Pop method in heap interface. -func (bs *ByFinalizationHeight) Pop() (ret interface{}) { - n := len(*bs) - *bs, ret = (*bs)[0:n-1], (*bs)[n-1] - return -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/config.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/config.go deleted file mode 100644 index 975eec9cb..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/config.go +++ /dev/null @@ -1,109 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package types - -import ( - "encoding/binary" - "math" - "time" -) - -// Config stands for Current Configuration Parameters. -type Config struct { - // Network related. - NumChains uint32 - - // Lambda related. - LambdaBA time.Duration - LambdaDKG time.Duration - - // Total ordering related. - K int - PhiRatio float32 - - // Set related. - NotarySetSize uint32 - DKGSetSize uint32 - - // Time related. - RoundInterval time.Duration - MinBlockInterval time.Duration - MaxBlockInterval time.Duration -} - -// Clone return a copied configuration. -func (c *Config) Clone() *Config { - return &Config{ - NumChains: c.NumChains, - LambdaBA: c.LambdaBA, - LambdaDKG: c.LambdaDKG, - K: c.K, - PhiRatio: c.PhiRatio, - NotarySetSize: c.NotarySetSize, - DKGSetSize: c.DKGSetSize, - RoundInterval: c.RoundInterval, - MinBlockInterval: c.MinBlockInterval, - MaxBlockInterval: c.MaxBlockInterval, - } -} - -// Bytes returns []byte representation of Config. -func (c *Config) Bytes() []byte { - binaryNumChains := make([]byte, 4) - binary.LittleEndian.PutUint32(binaryNumChains, c.NumChains) - - binaryLambdaBA := make([]byte, 8) - binary.LittleEndian.PutUint64( - binaryLambdaBA, uint64(c.LambdaBA.Nanoseconds())) - binaryLambdaDKG := make([]byte, 8) - binary.LittleEndian.PutUint64( - binaryLambdaDKG, uint64(c.LambdaDKG.Nanoseconds())) - - binaryK := make([]byte, 4) - binary.LittleEndian.PutUint32(binaryK, uint32(c.K)) - binaryPhiRatio := make([]byte, 4) - binary.LittleEndian.PutUint32(binaryPhiRatio, math.Float32bits(c.PhiRatio)) - - binaryNotarySetSize := make([]byte, 4) - binary.LittleEndian.PutUint32(binaryNotarySetSize, c.NotarySetSize) - binaryDKGSetSize := make([]byte, 4) - binary.LittleEndian.PutUint32(binaryDKGSetSize, c.DKGSetSize) - - binaryRoundInterval := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryRoundInterval, - uint64(c.RoundInterval.Nanoseconds())) - binaryMinBlockInterval := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryMinBlockInterval, - uint64(c.MinBlockInterval.Nanoseconds())) - binaryMaxBlockInterval := make([]byte, 8) - binary.LittleEndian.PutUint64(binaryMaxBlockInterval, - uint64(c.MaxBlockInterval.Nanoseconds())) - - enc := make([]byte, 0, 40) - enc = append(enc, binaryNumChains...) - enc = append(enc, binaryLambdaBA...) - enc = append(enc, binaryLambdaDKG...) - enc = append(enc, binaryK...) - enc = append(enc, binaryPhiRatio...) - enc = append(enc, binaryNotarySetSize...) - enc = append(enc, binaryDKGSetSize...) - enc = append(enc, binaryRoundInterval...) - enc = append(enc, binaryMinBlockInterval...) - enc = append(enc, binaryMaxBlockInterval...) - return enc -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/dkg/dkg.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/dkg/dkg.go deleted file mode 100644 index 4053c5a28..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/dkg/dkg.go +++ /dev/null @@ -1,194 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package dkg - -import ( - "bytes" - "encoding/json" - "fmt" - "io" - - "github.com/dexon-foundation/dexon/rlp" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - cryptoDKG "github.com/dexon-foundation/dexon-consensus/core/crypto/dkg" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -// PrivateShare describe a secret share in DKG protocol. -type PrivateShare struct { - ProposerID types.NodeID `json:"proposer_id"` - ReceiverID types.NodeID `json:"receiver_id"` - Round uint64 `json:"round"` - PrivateShare cryptoDKG.PrivateKey `json:"private_share"` - Signature crypto.Signature `json:"signature"` -} - -// Equal checks equality between two PrivateShare instances. -func (p *PrivateShare) Equal(other *PrivateShare) bool { - return p.ProposerID.Equal(other.ProposerID) && - p.ReceiverID.Equal(other.ReceiverID) && - p.Round == other.Round && - p.Signature.Type == other.Signature.Type && - bytes.Compare(p.Signature.Signature, other.Signature.Signature) == 0 && - bytes.Compare( - p.PrivateShare.Bytes(), other.PrivateShare.Bytes()) == 0 -} - -// MasterPublicKey decrtibe a master public key in DKG protocol. -type MasterPublicKey struct { - ProposerID types.NodeID `json:"proposer_id"` - Round uint64 `json:"round"` - DKGID cryptoDKG.ID `json:"dkg_id"` - PublicKeyShares cryptoDKG.PublicKeyShares `json:"public_key_shares"` - Signature crypto.Signature `json:"signature"` -} - -func (d *MasterPublicKey) String() string { - return fmt.Sprintf("MasterPublicKey[%s:%d]", - d.ProposerID.String()[:6], - d.Round) -} - -// Equal check equality of two DKG master public keys. -func (d *MasterPublicKey) Equal(other *MasterPublicKey) bool { - return d.ProposerID.Equal(other.ProposerID) && - d.Round == other.Round && - d.DKGID.GetHexString() == other.DKGID.GetHexString() && - d.PublicKeyShares.Equal(&other.PublicKeyShares) && - d.Signature.Type == other.Signature.Type && - bytes.Compare(d.Signature.Signature, other.Signature.Signature) == 0 -} - -type rlpMasterPublicKey struct { - ProposerID types.NodeID - Round uint64 - DKGID []byte - PublicKeyShares *cryptoDKG.PublicKeyShares - Signature crypto.Signature -} - -// EncodeRLP implements rlp.Encoder -func (d *MasterPublicKey) EncodeRLP(w io.Writer) error { - return rlp.Encode(w, rlpMasterPublicKey{ - ProposerID: d.ProposerID, - Round: d.Round, - DKGID: d.DKGID.GetLittleEndian(), - PublicKeyShares: &d.PublicKeyShares, - Signature: d.Signature, - }) -} - -// DecodeRLP implements rlp.Decoder -func (d *MasterPublicKey) DecodeRLP(s *rlp.Stream) error { - var dec rlpMasterPublicKey - if err := s.Decode(&dec); err != nil { - return err - } - - id, err := cryptoDKG.BytesID(dec.DKGID) - if err != nil { - return err - } - - *d = MasterPublicKey{ - ProposerID: dec.ProposerID, - Round: dec.Round, - DKGID: id, - PublicKeyShares: *dec.PublicKeyShares, - Signature: dec.Signature, - } - return err -} - -// NewMasterPublicKey returns a new MasterPublicKey instance. -func NewMasterPublicKey() *MasterPublicKey { - return &MasterPublicKey{ - PublicKeyShares: *cryptoDKG.NewEmptyPublicKeyShares(), - } -} - -// UnmarshalJSON implements json.Unmarshaller. -func (d *MasterPublicKey) UnmarshalJSON(data []byte) error { - type innertMasterPublicKey MasterPublicKey - d.PublicKeyShares = *cryptoDKG.NewEmptyPublicKeyShares() - return json.Unmarshal(data, (*innertMasterPublicKey)(d)) -} - -// Complaint describe a complaint in DKG protocol. -type Complaint struct { - ProposerID types.NodeID `json:"proposer_id"` - Round uint64 `json:"round"` - PrivateShare PrivateShare `json:"private_share"` - Signature crypto.Signature `json:"signature"` -} - -func (c *Complaint) String() string { - if c.IsNack() { - return fmt.Sprintf("DKGNackComplaint[%s:%d]%s", - c.ProposerID.String()[:6], c.Round, - c.PrivateShare.ProposerID.String()[:6]) - } - return fmt.Sprintf("Complaint[%s:%d]%v", - c.ProposerID.String()[:6], c.Round, c.PrivateShare) -} - -// Equal checks equality between two Complaint instances. -func (c *Complaint) Equal(other *Complaint) bool { - return c.ProposerID.Equal(other.ProposerID) && - c.Round == other.Round && - c.PrivateShare.Equal(&other.PrivateShare) && - c.Signature.Type == other.Signature.Type && - bytes.Compare(c.Signature.Signature, other.Signature.Signature) == 0 -} - -// PartialSignature describe a partial signature in DKG protocol. -type PartialSignature struct { - ProposerID types.NodeID `json:"proposer_id"` - Round uint64 `json:"round"` - Hash common.Hash `json:"hash"` - PartialSignature cryptoDKG.PartialSignature `json:"partial_signature"` - Signature crypto.Signature `json:"signature"` -} - -// Finalize describe a dig finalize message in DKG protocol. -type Finalize struct { - ProposerID types.NodeID `json:"proposer_id"` - Round uint64 `json:"round"` - Signature crypto.Signature `json:"signature"` -} - -func (final *Finalize) String() string { - return fmt.Sprintf("DKGFinal[%s:%d]", - final.ProposerID.String()[:6], - final.Round) -} - -// Equal check equality of two Finalize instances. -func (final *Finalize) Equal(other *Finalize) bool { - return final.ProposerID.Equal(other.ProposerID) && - final.Round == other.Round && - final.Signature.Type == other.Signature.Type && - bytes.Compare(final.Signature.Signature, other.Signature.Signature) == 0 -} - -// IsNack returns true if it's a nack complaint in DKG protocol. -func (c *Complaint) IsNack() bool { - return len(c.PrivateShare.Signature.Signature) == 0 -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/node.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/node.go deleted file mode 100644 index 2c90f65c8..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/node.go +++ /dev/null @@ -1,56 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package types - -import ( - "bytes" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" -) - -// NodeID is the ID type for nodes. -type NodeID struct { - common.Hash -} - -// NewNodeID returns a NodeID with Hash set to the hash value of -// public key. -func NewNodeID(pubKey crypto.PublicKey) NodeID { - return NodeID{Hash: crypto.Keccak256Hash(pubKey.Bytes()[1:])} -} - -// Equal checks if the hash representation is the same NodeID. -func (v NodeID) Equal(v2 NodeID) bool { - return v.Hash == v2.Hash -} - -// NodeIDs implements sort.Interface for NodeID. -type NodeIDs []NodeID - -func (v NodeIDs) Len() int { - return len(v) -} - -func (v NodeIDs) Less(i int, j int) bool { - return bytes.Compare([]byte(v[i].Hash[:]), []byte(v[j].Hash[:])) == -1 -} - -func (v NodeIDs) Swap(i int, j int) { - v[i], v[j] = v[j], v[i] -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/nodeset.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/nodeset.go deleted file mode 100644 index 3222b3c2f..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/nodeset.go +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package types - -import ( - "container/heap" - "encoding/binary" - "math/big" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" -) - -// NodeSet is the node set structure as defined in DEXON consensus core. -type NodeSet struct { - IDs map[NodeID]struct{} -} - -// SubSetTarget is the sub set target for GetSubSet(). -type SubSetTarget *big.Int - -type subSetTargetType byte - -const ( - targetNotarySet subSetTargetType = iota - targetDKGSet -) - -type nodeRank struct { - ID NodeID - rank *big.Int -} - -// rankHeap is a MaxHeap structure. -type rankHeap []*nodeRank - -func (h rankHeap) Len() int { return len(h) } -func (h rankHeap) Less(i, j int) bool { return h[i].rank.Cmp(h[j].rank) > 0 } -func (h rankHeap) Swap(i, j int) { h[i], h[j] = h[j], h[i] } -func (h *rankHeap) Push(x interface{}) { - *h = append(*h, x.(*nodeRank)) -} -func (h *rankHeap) Pop() interface{} { - old := *h - n := len(old) - x := old[n-1] - *h = old[0 : n-1] - return x -} - -// NewNodeSet creates a new NodeSet instance. -func NewNodeSet() *NodeSet { - return &NodeSet{ - IDs: make(map[NodeID]struct{}), - } -} - -// NewNotarySetTarget is the target for getting Notary Set. -func NewNotarySetTarget(crs common.Hash, chainID uint32) SubSetTarget { - binaryChainID := make([]byte, 4) - binary.LittleEndian.PutUint32(binaryChainID, chainID) - - return newTarget(targetNotarySet, crs[:], binaryChainID) -} - -// NewDKGSetTarget is the target for getting DKG Set. -func NewDKGSetTarget(crs common.Hash) SubSetTarget { - return newTarget(targetDKGSet, crs[:]) -} - -// Add a NodeID to the set. -func (ns *NodeSet) Add(ID NodeID) { - ns.IDs[ID] = struct{}{} -} - -// Clone the NodeSet. -func (ns *NodeSet) Clone() *NodeSet { - nsCopy := NewNodeSet() - for ID := range ns.IDs { - nsCopy.Add(ID) - } - return nsCopy -} - -// GetSubSet returns the subset of given target. -func (ns *NodeSet) GetSubSet( - size int, target SubSetTarget) map[NodeID]struct{} { - h := rankHeap{} - idx := 0 - for nID := range ns.IDs { - if idx < size { - h = append(h, newNodeRank(nID, target)) - } else if idx == size { - heap.Init(&h) - } - if idx >= size { - rank := newNodeRank(nID, target) - if rank.rank.Cmp(h[0].rank) < 0 { - h[0] = rank - heap.Fix(&h, 0) - } - } - idx++ - } - - nIDs := make(map[NodeID]struct{}, size) - for _, rank := range h { - nIDs[rank.ID] = struct{}{} - } - - return nIDs -} - -func newTarget(targetType subSetTargetType, data ...[]byte) SubSetTarget { - data = append(data, []byte{byte(targetType)}) - h := crypto.Keccak256Hash(data...) - num := big.NewInt(0) - num.SetBytes(h[:]) - return SubSetTarget(num) -} - -func newNodeRank(ID NodeID, target SubSetTarget) *nodeRank { - num := big.NewInt(0) - num.SetBytes(ID.Hash[:]) - num.Abs(num.Sub((*big.Int)(target), num)) - return &nodeRank{ - ID: ID, - rank: num, - } -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/position.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/position.go deleted file mode 100644 index 404f3035e..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/position.go +++ /dev/null @@ -1,74 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package types - -import ( - "fmt" -) - -// Position describes the position in the block lattice of an entity. -type Position struct { - ChainID uint32 `json:"chain_id"` - Round uint64 `json:"round"` - Height uint64 `json:"height"` -} - -func (pos *Position) String() string { - return fmt.Sprintf("pos[%d:%d:%d]", pos.Round, pos.ChainID, pos.Height) -} - -// Equal checks if two positions are equal, it panics when their chainIDs -// are different. -func (pos *Position) Equal(other *Position) bool { - if pos.ChainID != other.ChainID { - panic(fmt.Errorf("unexpected chainID %d, should be %d", - other.ChainID, pos.ChainID)) - } - return pos.Round == other.Round && pos.Height == other.Height -} - -// Newer checks if one block is newer than another one on the same chain. -// If two blocks on different chain compared by this function, it would panic. -func (pos *Position) Newer(other *Position) bool { - if pos.ChainID != other.ChainID { - panic(fmt.Errorf("unexpected chainID %d, should be %d", - other.ChainID, pos.ChainID)) - } - return pos.Round > other.Round || - (pos.Round == other.Round && pos.Height > other.Height) -} - -// Older checks if one block is older than another one on the same chain. -// If two blocks on different chain compared by this function, it would panic. -func (pos *Position) Older(other *Position) bool { - if pos.ChainID != other.ChainID { - panic(fmt.Errorf("unexpected chainID %d, should be %d", - other.ChainID, pos.ChainID)) - } - return pos.Round < other.Round || - (pos.Round == other.Round && pos.Height < other.Height) -} - -// Clone a position instance. -func (pos *Position) Clone() *Position { - return &Position{ - ChainID: pos.ChainID, - Round: pos.Round, - Height: pos.Height, - } -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/vote.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/vote.go deleted file mode 100644 index 32fb8982d..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/types/vote.go +++ /dev/null @@ -1,65 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package types - -import ( - "fmt" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" -) - -// VoteType is the type of vote. -type VoteType byte - -// VoteType enum. -const ( - VoteInit VoteType = iota - VotePreCom - VoteCom - // Do not add any type below MaxVoteType. - MaxVoteType -) - -// Vote is the vote structure defined in Crypto Shuffle Algorithm. -type Vote struct { - ProposerID NodeID `json:"proposer_id"` - Type VoteType `json:"type"` - BlockHash common.Hash `json:"block_hash"` - Period uint64 `json:"period"` - Position Position `json:"position"` - Signature crypto.Signature `json:"signature"` -} - -func (v *Vote) String() string { - return fmt.Sprintf("Vote[%s:%d:%d](%d:%d):%s", - v.ProposerID.String()[:6], v.Position.ChainID, v.Position.Height, - v.Period, v.Type, v.BlockHash.String()[:6]) -} - -// Clone returns a deep copy of a vote. -func (v *Vote) Clone() *Vote { - return &Vote{ - ProposerID: v.ProposerID, - Type: v.Type, - BlockHash: v.BlockHash, - Period: v.Period, - Position: v.Position, - Signature: v.Signature.Clone(), - } -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/utils.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/utils.go deleted file mode 100644 index 6b9ce634f..000000000 --- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/utils.go +++ /dev/null @@ -1,161 +0,0 @@ -// Copyright 2018 The dexon-consensus Authors -// This file is part of the dexon-consensus library. -// -// The dexon-consensus library is free software: you can redistribute it -// and/or modify it under the terms of the GNU Lesser General Public License as -// published by the Free Software Foundation, either version 3 of the License, -// or (at your option) any later version. -// -// The dexon-consensus library is distributed in the hope that it will be -// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser -// General Public License for more details. -// -// You should have received a copy of the GNU Lesser General Public License -// along with the dexon-consensus library. If not, see -// . - -package core - -import ( - "errors" - "fmt" - "os" - "sort" - "time" - - "github.com/dexon-foundation/dexon-consensus/common" - "github.com/dexon-foundation/dexon-consensus/core/crypto" - "github.com/dexon-foundation/dexon-consensus/core/types" -) - -var ( - debug = false - // ErrEmptyTimestamps would be reported if Block.timestamps is empty. - ErrEmptyTimestamps = errors.New("timestamp vector should not be empty") -) - -func init() { - if os.Getenv("DEBUG") != "" { - debug = true - } -} - -// Debugf is like fmt.Printf, but only output when we are in debug mode. -func Debugf(format string, args ...interface{}) { - if debug { - fmt.Printf(format, args...) - } -} - -// Debugln is like fmt.Println, but only output when we are in debug mode. -func Debugln(args ...interface{}) { - if debug { - fmt.Println(args) - } -} - -func interpoTime(t1 time.Time, t2 time.Time, sep int) []time.Time { - if sep == 0 { - return []time.Time{} - } - if t1.After(t2) { - return interpoTime(t2, t1, sep) - } - timestamps := make([]time.Time, sep) - duration := t2.Sub(t1) - period := time.Duration( - (duration.Nanoseconds() / int64(sep+1))) * time.Nanosecond - prevTime := t1 - for idx := range timestamps { - prevTime = prevTime.Add(period) - timestamps[idx] = prevTime - } - return timestamps -} - -func getMedianTime(timestamps []time.Time) (t time.Time, err error) { - if len(timestamps) == 0 { - err = ErrEmptyTimestamps - return - } - tscopy := make([]time.Time, 0, len(timestamps)) - for _, ts := range timestamps { - tscopy = append(tscopy, ts) - } - sort.Sort(common.ByTime(tscopy)) - if len(tscopy)%2 == 0 { - t1 := tscopy[len(tscopy)/2-1] - t2 := tscopy[len(tscopy)/2] - t = interpoTime(t1, t2, 1)[0] - } else { - t = tscopy[len(tscopy)/2] - } - return -} - -func removeFromSortedUint32Slice(xs []uint32, x uint32) []uint32 { - indexToRemove := sort.Search(len(xs), func(idx int) bool { - return xs[idx] >= x - }) - if indexToRemove == len(xs) || xs[indexToRemove] != x { - // This value is not found. - return xs - } - return append(xs[:indexToRemove], xs[indexToRemove+1:]...) -} - -// HashConfigurationBlock returns the hash value of configuration block. -func HashConfigurationBlock( - notarySet map[types.NodeID]struct{}, - config *types.Config, - snapshotHash common.Hash, - prevHash common.Hash, -) common.Hash { - notaryIDs := make(types.NodeIDs, 0, len(notarySet)) - for nID := range notarySet { - notaryIDs = append(notaryIDs, nID) - } - sort.Sort(notaryIDs) - notarySetBytes := make([]byte, 0, len(notarySet)*len(common.Hash{})) - for _, nID := range notaryIDs { - notarySetBytes = append(notarySetBytes, nID.Hash[:]...) - } - configBytes := config.Bytes() - - return crypto.Keccak256Hash( - notarySetBytes[:], - configBytes[:], - snapshotHash[:], - prevHash[:], - ) -} - -// VerifyBlock verifies the signature of types.Block. -func VerifyBlock(b *types.Block) (err error) { - hash, err := hashBlock(b) - if err != nil { - return - } - if hash != b.Hash { - err = ErrIncorrectHash - return - } - pubKey, err := crypto.SigToPub(b.Hash, b.Signature) - if err != nil { - return - } - if !b.ProposerID.Equal(types.NewNodeID(pubKey)) { - err = ErrIncorrectSignature - return - } - return -} - -// DiffUint64 calculates difference between two uint64. -func DiffUint64(a, b uint64) uint64 { - if a > b { - return a - b - } - return b - a -} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/agreement.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/agreement.go index 8741baf10..d6875bc45 100644 --- a/vendor/github.com/dexon-foundation/dexon-consensus/core/agreement.go +++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/agreement.go @@ -118,7 +118,6 @@ type agreement struct { func newAgreement( ID types.NodeID, recv agreementReceiver, - notarySet map[types.NodeID]struct{}, leader *leaderSelector, authModule *Authenticator) *agreement { agreement := &agreement{ @@ -137,7 +136,7 @@ func newAgreement( // restart the agreement func (a *agreement) restart( - notarySet map[types.NodeID]struct{}, aID types.Position) { + notarySet map[types.NodeID]struct{}, aID types.Position, crs common.Hash) { func() { a.lock.Lock() @@ -151,7 +150,7 @@ func (a *agreement) restart( a.data.period = 1 a.data.blocks = make(map[types.NodeID]*types.Block) a.data.requiredVote = len(notarySet)/3*2 + 1 - a.data.leader.restart() + a.data.leader.restart(crs) a.data.lockValue = nullBlockHash a.data.lockRound = 1 a.fastForward = make(chan uint64, 1) @@ -213,7 +212,7 @@ func (a *agreement) restart( func (a *agreement) stop() { a.restart(make(map[types.NodeID]struct{}), types.Position{ ChainID: math.MaxUint32, - }) + }, common.Hash{}) } func isStop(aID types.Position) bool { diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go index cec3c4f64..29d4aa2c8 100644 --- a/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go +++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/consensus.go @@ -315,12 +315,6 @@ func NewConsensus( config := gov.Configuration(round) nodeSetCache := NewNodeSetCache(gov) logger.Debug("Calling Governance.CRS", "round", round) - crs := gov.CRS(round) - // Setup acking by information returned from Governace. - nodes, err := nodeSetCache.GetNodeSet(round) - if err != nil { - panic(err) - } // Setup auth module. authModule := NewAuthenticator(prv) // Check if the application implement Debug interface. @@ -385,8 +379,7 @@ func NewConsensus( agreementModule := newAgreement( con.ID, recv, - nodes.IDs, - newLeaderSelector(crs, validLeader), + newLeaderSelector(validLeader), con.authModule, ) // Hacky way to make agreement module self contained. @@ -448,6 +441,7 @@ func (con *Consensus) runBA(chainID uint32, tick <-chan struct{}) { recv := con.receivers[chainID] recv.restartNotary <- true nIDs := make(map[types.NodeID]struct{}) + crs := common.Hash{} // Reset ticker <-tick BALoop: @@ -466,16 +460,17 @@ BALoop: if err != nil { panic(err) } + con.logger.Debug("Calling Governance.CRS", "round", recv.round) + crs = con.gov.CRS(recv.round) con.logger.Debug("Calling Governance.Configuration", "round", recv.round) - con.logger.Debug("Calling Governance.CRS", "round", recv.round) nIDs = nodes.GetSubSet( int(con.gov.Configuration(recv.round).NotarySetSize), - types.NewNotarySetTarget(con.gov.CRS(recv.round), chainID)) + types.NewNotarySetTarget(crs, chainID)) } nextPos := con.lattice.NextPosition(chainID) nextPos.Round = recv.round - agreement.restart(nIDs, nextPos) + agreement.restart(nIDs, nextPos, crs) default: } if agreement.pullVotes() { @@ -809,14 +804,15 @@ func (con *Consensus) ProcessAgreementResult( con.logger.Debug("Calling Network.PullBlocks for syncing BA", "hash", rand.BlockHash) con.network.PullBlocks(common.Hashes{rand.BlockHash}) + con.logger.Debug("Calling Governance.CRS", "round", rand.Position.Round) + crs := con.gov.CRS(rand.Position.Round) nIDs := nodes.GetSubSet( int(con.gov.Configuration(rand.Position.Round).NotarySetSize), - types.NewNotarySetTarget( - con.gov.CRS(rand.Position.Round), rand.Position.ChainID)) + types.NewNotarySetTarget(crs, rand.Position.ChainID)) for _, vote := range rand.Votes { agreement.processVote(&vote) } - agreement.restart(nIDs, rand.Position) + agreement.restart(nIDs, rand.Position, crs) } // Calculating randomness. if rand.Position.Round == 0 { @@ -929,7 +925,7 @@ func (con *Consensus) preProcessBlock(b *types.Block) (err error) { func (con *Consensus) deliverBlock(b *types.Block) { // TODO(mission): clone types.FinalizationResult con.logger.Debug("Calling Application.BlockDelivered", "block", b) - con.app.BlockDelivered(b.Hash, b.Finalization) + con.app.BlockDelivered(b.Hash, b.Position, b.Finalization) if b.Position.Round+2 == con.roundToNotify { // Only the first block delivered of that round would // trigger this noitification. diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go index 75a2fdfcf..3a9c0752a 100644 --- a/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go +++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/interfaces.go @@ -42,7 +42,8 @@ type Application interface { BlockConfirmed(block types.Block) // BlockDelivered is called when a block is add to the compaction chain. - BlockDelivered(blockHash common.Hash, result types.FinalizationResult) + BlockDelivered(blockHash common.Hash, + blockPosition types.Position, result types.FinalizationResult) } // Debug describes the application interface that requires diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/leader-selector.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/leader-selector.go index 2be596abc..08006dbfb 100644 --- a/vendor/github.com/dexon-foundation/dexon-consensus/core/leader-selector.go +++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/leader-selector.go @@ -59,13 +59,8 @@ type leaderSelector struct { lock sync.Mutex } -func newLeaderSelector( - crs common.Hash, validLeader validLeaderFn) *leaderSelector { - numCRS := big.NewInt(0) - numCRS.SetBytes(crs[:]) +func newLeaderSelector(validLeader validLeaderFn) *leaderSelector { return &leaderSelector{ - numCRS: numCRS, - hashCRS: crs, minCRSBlock: maxHash, validLeader: validLeader, } @@ -86,9 +81,13 @@ func (l *leaderSelector) probability(sig crypto.Signature) float64 { return p } -func (l *leaderSelector) restart() { +func (l *leaderSelector) restart(crs common.Hash) { + numCRS := big.NewInt(0) + numCRS.SetBytes(crs[:]) l.lock.Lock() defer l.lock.Unlock() + l.numCRS = numCRS + l.hashCRS = crs l.minCRSBlock = maxHash l.minBlockHash = common.Hash{} l.pendingBlocks = []*types.Block{} diff --git a/vendor/github.com/dexon-foundation/dexon-consensus/core/nonblocking.go b/vendor/github.com/dexon-foundation/dexon-consensus/core/nonblocking.go index fafbd10bb..a73331fae 100644 --- a/vendor/github.com/dexon-foundation/dexon-consensus/core/nonblocking.go +++ b/vendor/github.com/dexon-foundation/dexon-consensus/core/nonblocking.go @@ -39,8 +39,9 @@ type totalOrderingDeliveredEvent struct { } type blockDeliveredEvent struct { - blockHash common.Hash - result *types.FinalizationResult + blockHash common.Hash + blockPosition types.Position + result *types.FinalizationResult } // nonBlocking implements these interfaces and is a decorator for @@ -99,7 +100,7 @@ func (nb *nonBlocking) run() { case totalOrderingDeliveredEvent: nb.debug.TotalOrderingDelivered(e.blockHashes, e.mode) case blockDeliveredEvent: - nb.app.BlockDelivered(e.blockHash, *e.result) + nb.app.BlockDelivered(e.blockHash, e.blockPosition, *e.result) default: fmt.Printf("Unknown event %v.", e) } @@ -155,10 +156,11 @@ func (nb *nonBlocking) TotalOrderingDelivered( } // BlockDelivered is called when a block is add to the compaction chain. -func (nb *nonBlocking) BlockDelivered( - blockHash common.Hash, result types.FinalizationResult) { +func (nb *nonBlocking) BlockDelivered(blockHash common.Hash, + blockPosition types.Position, result types.FinalizationResult) { nb.addEvent(blockDeliveredEvent{ - blockHash: blockHash, - result: &result, + blockHash: blockHash, + blockPosition: blockPosition, + result: &result, }) } diff --git a/vendor/vendor.json b/vendor/vendor.json index 7eec125ec..346ff6f09 100644 --- a/vendor/vendor.json +++ b/vendor/vendor.json @@ -105,50 +105,50 @@ { "checksumSHA1": "ev84RyegNbt2Pr/sK26LK9LoQNI=", "path": "github.com/dexon-foundation/dexon-consensus/common", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { - "checksumSHA1": "0r8fTQxyg8QYnU7bvwuRvy1Vme8=", + "checksumSHA1": "Fm4DEad3JPvl3TIUth4knbY35NE=", "path": "github.com/dexon-foundation/dexon-consensus/core", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { "checksumSHA1": "vNsaBvsrXJF+W6K5DCLpgy1rUZY=", "path": "github.com/dexon-foundation/dexon-consensus/core/blockdb", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { "checksumSHA1": "tQSbYCu5P00lUhKsx3IbBZCuSLY=", "path": "github.com/dexon-foundation/dexon-consensus/core/crypto", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { "checksumSHA1": "p2jOAulavUU2xyj018pYPHlj8XA=", "path": "github.com/dexon-foundation/dexon-consensus/core/crypto/dkg", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { "checksumSHA1": "6Pf6caC8LTNCI7IflFmglKYnxYo=", "path": "github.com/dexon-foundation/dexon-consensus/core/crypto/ecdsa", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { "checksumSHA1": "Zxp6rFW4SLz4ZSITYbyrm/5jHDg=", "path": "github.com/dexon-foundation/dexon-consensus/core/types", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { "checksumSHA1": "ovChyW9OfDGnk/7CDAR+A5vJymc=", "path": "github.com/dexon-foundation/dexon-consensus/core/types/dkg", - "revision": "117e7b00aeb314e5201a6e82b606385370a86ee4", - "revisionTime": "2018-11-02T05:42:54Z" + "revision": "99e2bca925030368ed485626a58ab9a03d40eda6", + "revisionTime": "2018-11-02T08:05:25Z" }, { "checksumSHA1": "TAkwduKZqLyimyTPPWIllZWYFuE=", -- cgit v1.2.3