/
params.go
120 lines (102 loc) · 3.21 KB
/
params.go
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
// Copyright Fuzamei Corp. 2018 All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package types
import (
"github.com/pkg/errors"
"encoding/json"
"github.com/33cn/chain33/common/crypto"
)
const (
maxBlockSizeBytes = 104857600 // 100MB
)
// ConsensusParams contains consensus critical parameters
// that determine the validity of blocks.
type ConsensusParams struct {
BlockSize `json:"block_size_params"`
TxSize `json:"tx_size_params"`
BlockGossip `json:"block_gossip_params"`
EvidenceParams `json:"evidence_params"`
}
// BlockSize contain limits on the block size.
type BlockSize struct {
MaxBytes int `json:"max_bytes"` // NOTE: must not be 0 nor greater than 100MB
MaxTxs int `json:"max_txs"`
MaxGas int64 `json:"max_gas"`
}
// TxSize contain limits on the tx size.
type TxSize struct {
MaxBytes int `json:"max_bytes"`
MaxGas int64 `json:"max_gas"`
}
// BlockGossip determine consensus critical elements of how blocks are gossiped
type BlockGossip struct {
BlockPartSizeBytes int `json:"block_part_size_bytes"` // NOTE: must not be 0
}
// EvidenceParams determine how we handle evidence of malfeasance
type EvidenceParams struct {
MaxAge int64 `json:"max_age"` // only accept new evidence more recent than this
}
// DefaultConsensusParams returns a default ConsensusParams.
func DefaultConsensusParams() *ConsensusParams {
return &ConsensusParams{
DefaultBlockSize(),
DefaultTxSize(),
DefaultBlockGossip(),
DefaultEvidenceParams(),
}
}
// DefaultBlockSize returns a default BlockSize.
func DefaultBlockSize() BlockSize {
return BlockSize{
MaxBytes: 22020096, // 21MB
MaxTxs: 100000,
MaxGas: -1,
}
}
// DefaultTxSize returns a default TxSize.
func DefaultTxSize() TxSize {
return TxSize{
MaxBytes: 10240, // 10kB
MaxGas: -1,
}
}
// DefaultBlockGossip returns a default BlockGossip.
func DefaultBlockGossip() BlockGossip {
return BlockGossip{
BlockPartSizeBytes: 65536, // 64kB,
}
}
// DefaultEvidenceParams returns a default EvidenceParams.
func DefaultEvidenceParams() EvidenceParams {
return EvidenceParams{
MaxAge: 100000, // 27.8 hrs at 1block/s
}
}
// Validate validates the ConsensusParams to ensure all values
// are within their allowed limits, and returns an error if they are not.
func (params *ConsensusParams) Validate() error {
// ensure some values are greater than 0
if params.BlockSize.MaxBytes <= 0 {
return errors.Errorf("BlockSize.MaxBytes must be greater than 0. Got %d", params.BlockSize.MaxBytes)
}
if params.BlockGossip.BlockPartSizeBytes <= 0 {
return errors.Errorf("BlockGossip.BlockPartSizeBytes must be greater than 0. Got %d", params.BlockGossip.BlockPartSizeBytes)
}
// ensure blocks aren't too big
if params.BlockSize.MaxBytes > maxBlockSizeBytes {
return errors.Errorf("BlockSize.MaxBytes is too big. %d > %d",
params.BlockSize.MaxBytes, maxBlockSizeBytes)
}
return nil
}
// Hash returns a merkle hash of the parameters to store
// in the block header
func (params *ConsensusParams) Hash() []byte {
bytes, err := json.Marshal(params)
if err != nil {
ttlog.Error("block header Hash() marshal failed", "error", err)
return nil
}
return crypto.Ripemd160(bytes)
}