-
Notifications
You must be signed in to change notification settings - Fork 0
/
eth_getFilterChanges.go
166 lines (136 loc) · 4.57 KB
/
eth_getFilterChanges.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
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
package transformer
import (
"context"
"encoding/json"
"math/big"
"github.com/labstack/echo"
"github.com/revolutionchain/charon/pkg/conversion"
"github.com/revolutionchain/charon/pkg/eth"
"github.com/revolutionchain/charon/pkg/revo"
"github.com/revolutionchain/charon/pkg/utils"
)
// ProxyETHGetFilterChanges implements ETHProxy
type ProxyETHGetFilterChanges struct {
*revo.Revo
filter *eth.FilterSimulator
}
func (p *ProxyETHGetFilterChanges) Method() string {
return "eth_getFilterChanges"
}
func (p *ProxyETHGetFilterChanges) Request(rawreq *eth.JSONRPCRequest, c echo.Context) (interface{}, eth.JSONRPCError) {
filter, err := processFilter(p, rawreq)
if err != nil {
return nil, err
}
switch filter.Type {
case eth.NewFilterTy:
return p.requestFilter(c.Request().Context(), filter)
case eth.NewBlockFilterTy:
return p.requestBlockFilter(c.Request().Context(), filter)
case eth.NewPendingTransactionFilterTy:
fallthrough
default:
return nil, eth.NewInvalidParamsError("Unknown filter type")
}
}
func (p *ProxyETHGetFilterChanges) requestBlockFilter(ctx context.Context, filter *eth.Filter) (revoresp eth.GetFilterChangesResponse, err eth.JSONRPCError) {
revoresp = make(eth.GetFilterChangesResponse, 0)
_lastBlockNumber, ok := filter.Data.Load("lastBlockNumber")
if !ok {
return revoresp, eth.NewCallbackError("Could not get lastBlockNumber")
}
lastBlockNumber := _lastBlockNumber.(uint64)
blockCountBigInt, blockErr := p.GetBlockCount(ctx)
if blockErr != nil {
return revoresp, eth.NewCallbackError(blockErr.Error())
}
blockCount := blockCountBigInt.Uint64()
differ := blockCount - lastBlockNumber
hashes := make(eth.GetFilterChangesResponse, differ)
for i := range hashes {
blockNumber := new(big.Int).SetUint64(lastBlockNumber + uint64(i) + 1)
resp, err := p.GetBlockHash(ctx, blockNumber)
if err != nil {
return revoresp, eth.NewCallbackError(err.Error())
}
hashes[i] = utils.AddHexPrefix(string(resp))
}
revoresp = hashes
filter.Data.Store("lastBlockNumber", blockCount)
return
}
func (p *ProxyETHGetFilterChanges) requestFilter(ctx context.Context, filter *eth.Filter) (revoresp eth.GetFilterChangesResponse, err eth.JSONRPCError) {
revoresp = make(eth.GetFilterChangesResponse, 0)
_lastBlockNumber, ok := filter.Data.Load("lastBlockNumber")
if !ok {
return revoresp, eth.NewCallbackError("Could not get lastBlockNumber")
}
lastBlockNumber := _lastBlockNumber.(uint64)
blockCountBigInt, blockErr := p.GetBlockCount(ctx)
if blockErr != nil {
return revoresp, eth.NewCallbackError(blockErr.Error())
}
blockCount := blockCountBigInt.Uint64()
differ := blockCount - lastBlockNumber
if differ == 0 {
return eth.GetFilterChangesResponse{}, nil
}
searchLogsReq, err := p.toSearchLogsReq(filter, big.NewInt(int64(lastBlockNumber+1)), big.NewInt(int64(blockCount)))
if err != nil {
return nil, err
}
return p.doSearchLogs(ctx, searchLogsReq)
}
func (p *ProxyETHGetFilterChanges) doSearchLogs(ctx context.Context, req *revo.SearchLogsRequest) (eth.GetFilterChangesResponse, eth.JSONRPCError) {
resp, err := conversion.SearchLogsAndFilterExtraTopics(ctx, p.Revo, req)
if err != nil {
return nil, err
}
receiptToResult := func(receipt *revo.TransactionReceipt) []interface{} {
logs := conversion.ExtractETHLogsFromTransactionReceipt(receipt, receipt.Log)
res := make([]interface{}, len(logs))
for i := range res {
res[i] = logs[i]
}
return res
}
results := make(eth.GetFilterChangesResponse, 0)
for _, receipt := range resp {
r := revo.TransactionReceipt(receipt)
results = append(results, receiptToResult(&r)...)
}
return results, nil
}
func (p *ProxyETHGetFilterChanges) toSearchLogsReq(filter *eth.Filter, from, to *big.Int) (*revo.SearchLogsRequest, eth.JSONRPCError) {
ethreq := filter.Request.(*eth.NewFilterRequest)
var err error
var addresses []string
if ethreq.Address != nil {
if isBytesOfString(ethreq.Address) {
var addr string
if err = json.Unmarshal(ethreq.Address, &addr); err != nil {
// TODO: Correct error code?
return nil, eth.NewInvalidParamsError(err.Error())
}
addresses = append(addresses, addr)
} else {
if err = json.Unmarshal(ethreq.Address, &addresses); err != nil {
// TODO: Correct error code?
return nil, eth.NewInvalidParamsError(err.Error())
}
}
for i := range addresses {
addresses[i] = utils.RemoveHexPrefix(addresses[i])
}
}
revoreq := &revo.SearchLogsRequest{
Addresses: addresses,
FromBlock: from,
ToBlock: to,
}
topics, ok := filter.Data.Load("topics")
if ok {
revoreq.Topics = topics.([]revo.SearchLogsTopic)
}
return revoreq, nil
}