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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
// 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 test
import (
"fmt"
"sync"
"time"
"github.com/dexon-foundation/dexon-consensus-core/common"
"github.com/dexon-foundation/dexon-consensus-core/core/crypto"
"github.com/dexon-foundation/dexon-consensus-core/core/crypto/ecdsa"
"github.com/dexon-foundation/dexon-consensus-core/core/types"
)
var (
// ErrPrivateKeyNotExists means caller request private key for an
// unknown node ID.
ErrPrivateKeyNotExists = fmt.Errorf("private key not exists")
)
// Governance is an implementation of Goverance for testing purpose.
type Governance struct {
lambdaBA time.Duration
lambdaDKG time.Duration
privateKeys map[types.NodeID]crypto.PrivateKey
crs map[uint64]common.Hash
tsig map[uint64]crypto.Signature
DKGComplaint map[uint64][]*types.DKGComplaint
DKGMasterPublicKey map[uint64][]*types.DKGMasterPublicKey
RoundInterval time.Duration
MinBlockInterval time.Duration
MaxBlockInterval time.Duration
lock sync.RWMutex
}
// NewGovernance constructs a Governance instance.
func NewGovernance(nodeCount int, lambda time.Duration) (
g *Governance, err error) {
hashCRS := crypto.Keccak256Hash([]byte("__ DEXON"))
g = &Governance{
lambdaBA: lambda,
lambdaDKG: lambda * 10,
privateKeys: make(map[types.NodeID]crypto.PrivateKey),
crs: map[uint64]common.Hash{0: hashCRS},
tsig: make(map[uint64]crypto.Signature),
DKGComplaint: make(map[uint64][]*types.DKGComplaint),
DKGMasterPublicKey: make(map[uint64][]*types.DKGMasterPublicKey),
RoundInterval: 365 * 86400 * time.Second,
MinBlockInterval: 1 * time.Millisecond,
MaxBlockInterval: lambda * 8,
}
for i := 0; i < nodeCount; i++ {
prv, err := ecdsa.NewPrivateKey()
if err != nil {
return nil, err
}
nID := types.NewNodeID(prv.PublicKey())
g.privateKeys[nID] = prv
}
return
}
// NodeSet implements Governance interface to return current
// notary set.
func (g *Governance) NodeSet(_ uint64) (
ret []crypto.PublicKey) {
for _, key := range g.privateKeys {
ret = append(ret, key.PublicKey())
}
return
}
// Configuration returns the configuration at a given block height.
func (g *Governance) Configuration(_ uint64) *types.Config {
return &types.Config{
NumShards: 1,
NumChains: uint32(len(g.privateKeys)),
LambdaBA: g.lambdaBA,
LambdaDKG: g.lambdaDKG,
K: 0,
PhiRatio: 0.667,
NumNotarySet: len(g.privateKeys),
NumWitnessSet: len(g.privateKeys),
NumDKGSet: len(g.privateKeys),
RoundInterval: g.RoundInterval,
MinBlockInterval: g.MinBlockInterval,
MaxBlockInterval: g.MaxBlockInterval,
}
}
// CRS returns the CRS for a given round.
func (g *Governance) CRS(round uint64) common.Hash {
return g.crs[round]
}
// ProposeCRS propose a CRS.
func (g *Governance) ProposeCRS(round uint64, signedCRS []byte) {
g.crs[round] = crypto.Keccak256Hash(signedCRS)
}
// PrivateKeys return the private key for that node, this function
// is a test utility and not a general Governance interface.
func (g *Governance) PrivateKeys() (keys []crypto.PrivateKey) {
for _, k := range g.privateKeys {
keys = append(keys, k)
}
return
}
// AddDKGComplaint add a DKGComplaint.
func (g *Governance) AddDKGComplaint(complaint *types.DKGComplaint) {
g.lock.Lock()
defer g.lock.Unlock()
for _, comp := range g.DKGComplaint[complaint.Round] {
if comp == complaint {
return
}
}
g.DKGComplaint[complaint.Round] = append(g.DKGComplaint[complaint.Round],
complaint)
}
// DKGComplaints returns the DKGComplaints of round.
func (g *Governance) DKGComplaints(round uint64) []*types.DKGComplaint {
g.lock.RLock()
defer g.lock.RUnlock()
complaints, exist := g.DKGComplaint[round]
if !exist {
return []*types.DKGComplaint{}
}
return complaints
}
// AddDKGMasterPublicKey adds a DKGMasterPublicKey.
func (g *Governance) AddDKGMasterPublicKey(
masterPublicKey *types.DKGMasterPublicKey) {
g.lock.Lock()
defer g.lock.Unlock()
g.DKGMasterPublicKey[masterPublicKey.Round] = append(
g.DKGMasterPublicKey[masterPublicKey.Round], masterPublicKey)
}
// DKGMasterPublicKeys returns the DKGMasterPublicKeys of round.
func (g *Governance) DKGMasterPublicKeys(
round uint64) []*types.DKGMasterPublicKey {
g.lock.RLock()
defer g.lock.RUnlock()
masterPublicKeys, exist := g.DKGMasterPublicKey[round]
if !exist {
return []*types.DKGMasterPublicKey{}
}
return masterPublicKeys
}
|