bitcoin_reader/test_helpers.go at master · tokenized/bitcoin_reader · GitHub

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
package bitcoin_reader

import (
	"context"
	"sync"

	"github.com/tokenized/bitcoin_reader/headers"
	"github.com/tokenized/pkg/bitcoin"
	"github.com/tokenized/pkg/wire"

	"github.com/pkg/errors"
)

type MockHeaderRepository struct {
	lastHeight                 int
	lastHash                   bitcoin.Hash32
	previousHashes             []bitcoin.Hash32
	newHeadersAvailableChannel *chan *wire.BlockHeader
}

func NewMockHeaderRepository() *MockHeaderRepository {
	lastHeight := 725107
	lastHash, _ := bitcoin.NewHash32FromStr("00000000000000000749cd1e05f963bde1347295de3bea047842d6c7b6a45311")
	previousHash, _ := bitcoin.NewHash32FromStr("000000000000000007de78e08cc3d133f6a9cb2062f31764b7f64643b2575d90")

	return &MockHeaderRepository{
		lastHeight:     lastHeight,
		lastHash:       *lastHash,
		previousHashes: []bitcoin.Hash32{*previousHash},
	}
}

func (m *MockHeaderRepository) GetNewHeadersAvailableChannel() <-chan *wire.BlockHeader {
	result := make(chan *wire.BlockHeader, 1000)

	m.newHeadersAvailableChannel = &result
	return result
}

func (m *MockHeaderRepository) GetVerifyOnlyLocatorHashes(ctx context.Context) ([]bitcoin.Hash32, error) {
	return m.previousHashes, nil
}

func (m *MockHeaderRepository) GetLocatorHashes(ctx context.Context,
	max int) ([]bitcoin.Hash32, error) {
	return m.previousHashes, nil
}

func (m *MockHeaderRepository) Height() int {
	return m.lastHeight
}

func (m *MockHeaderRepository) Hash(ctx context.Context, height int) (*bitcoin.Hash32, error) {
	return nil, errors.New("Not implemented")
}

func (m *MockHeaderRepository) HashHeight(hash bitcoin.Hash32) int {
	if m.lastHash.Equal(&hash) {
		return m.lastHeight
	}

	return -1
}

func (m *MockHeaderRepository) LastHash() bitcoin.Hash32 {
	return m.lastHash
}

func (m *MockHeaderRepository) LastTime() uint32 {
	return 0
}

func (m *MockHeaderRepository) PreviousHash(hash bitcoin.Hash32) (*bitcoin.Hash32, int) {
	return nil, -1
}

func (m *MockHeaderRepository) VerifyHeader(ctx context.Context, header *wire.BlockHeader) error {
	hash := *header.BlockHash()
	if hash.Equal(&m.lastHash) {
		return nil
	}

	return headers.ErrUnknownHeader
}

func (m *MockHeaderRepository) ProcessHeader(ctx context.Context, header *wire.BlockHeader) error {
	hash := *header.BlockHash()
	if hash.Equal(&m.lastHash) {
		return nil
	}

	return headers.ErrUnknownHeader
}

func (m *MockHeaderRepository) Stop(ctx context.Context) {
	if m.newHeadersAvailableChannel != nil {
		close(*m.newHeadersAvailableChannel)
		m.newHeadersAvailableChannel = nil
	}
}

type MockBlockTxManager struct {
	blocks map[bitcoin.Hash32][]bitcoin.Hash32

	sync.Mutex
}

func NewMockBlockTxManager() *MockBlockTxManager {
	return &MockBlockTxManager{
		blocks: make(map[bitcoin.Hash32][]bitcoin.Hash32),
	}
}

func (m *MockBlockTxManager) FetchBlockTxIDs(ctx context.Context,
	blockHash bitcoin.Hash32) ([]bitcoin.Hash32, bool, error) {
	m.Lock()
	defer m.Unlock()

	txids, exists := m.blocks[blockHash]
	if !exists {
		return nil, false, nil
	}
	return txids, true, nil
}

func (m *MockBlockTxManager) AppendBlockTxIDs(ctx context.Context, blockHash bitcoin.Hash32,
	txids []bitcoin.Hash32) error {
	m.Lock()
	defer m.Unlock()

	existingTxids, exists := m.blocks[blockHash]
	if !exists {
		m.blocks[blockHash] = txids
		return nil
	}

	for _, txid := range txids {
		existingTxids = appendHash32(existingTxids, txid)
	}

	m.blocks[blockHash] = existingTxids
	return nil
}

func appendHash32(hashes []bitcoin.Hash32, hash bitcoin.Hash32) []bitcoin.Hash32 {
	for _, h := range hashes {
		if h.Equal(&hash) {
			return hashes // already exists
		}
	}

	return append(hashes, hash)
}