1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
// Copyright 2018 The dexon-consensus-core Authors
// This file is part of the dexon-consensus-core library.
//
// The dexon-consensus-core 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-core 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-core library. If not, see
// <http://www.gnu.org/licenses/>.
package core
import (
"time"
"github.com/dexon-foundation/dexon-consensus-core/common"
"github.com/dexon-foundation/dexon-consensus-core/core/types"
)
// 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
// VerifyPayload verifies if the payloads are valid.
VerifyPayload(payloads []byte) bool
// BlockDelivered is called when a block is add to the compaction chain.
BlockDelivered(block types.Block)
// BlockProcessedChan returns a channel to receive the block hashes that have
// finished processing by the application.
BlockProcessedChan() <-chan types.WitnessResult
// WitnessAckDelivered is called when a witness ack is created.
WitnessAckDelivered(witnessAck *types.WitnessAck)
}
// Debug describes the application interface that requires
// more detailed consensus execution.
type Debug interface {
// BlockConfirmed is called when a block is confirmed and added to lattice.
BlockConfirmed(blockHash common.Hash)
// 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(blockHashes common.Hashes, early bool)
}
// Network describs the network interface that interacts with DEXON consensus
// core.
type Network interface {
// 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)
// BroadcastWitnessAck broadcasts witnessAck to all nodes in DEXON network.
BroadcastWitnessAck(witnessAck *types.WitnessAck)
// SendDKGPrivateShare sends PrivateShare to a DKG participant.
SendDKGPrivateShare(recv types.NodeID, prvShare *types.DKGPrivateShare)
// BroadcastDKGPrivateShare broadcasts PrivateShare to all DKG participants.
BroadcastDKGPrivateShare(prvShare *types.DKGPrivateShare)
// 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 {
// GetConfiguration returns the configuration at a given block height.
GetConfiguration(blockHeight uint64) *types.Config
// Get the current notary set.
GetNotarySet() map[types.NodeID]struct{}
//// DKG-related methods.
// AddDKGComplaint adds a DKGComplaint.
AddDKGComplaint(complaint *types.DKGComplaint)
// GetDKGComplaints gets all the DKGComplaints of round.
DKGComplaints(round uint64) []*types.DKGComplaint
// AddDKGMasterPublicKey adds a DKGMasterPublicKey.
AddDKGMasterPublicKey(masterPublicKey *types.DKGMasterPublicKey)
// DKGMasterPublicKeys gets all the DKGMasterPublicKey of round.
DKGMasterPublicKeys(round uint64) []*types.DKGMasterPublicKey
}
// 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()
}
// Signer defines a role to sign data.
type Signer interface {
// SignBlock signs a block.
SignBlock(b *types.Block) error
// SignVote signs a vote.
SignVote(v *types.Vote) error
// SignCRS sign a block's CRS signature.
SignCRS(b *types.Block, crs common.Hash) error
}
// CryptoVerifier defines a role to verify data in crypto's way.
type CryptoVerifier interface {
// VerifyBlock verifies if a block is properly signed or not.
VerifyBlock(b *types.Block) (ok bool, err error)
// VerifyVote verfies if a vote is properly signed or not.
VerifyVote(v *types.Vote) (ok bool, err error)
// VerifyCRS verifies if a CRS signature of one block is valid or not.
VerifyCRS(b *types.Block, crs common.Hash) (ok bool, err error)
}
// Authenticator verify/sign who own the data.
type Authenticator interface {
Signer
CryptoVerifier
}
|