/
state.go
174 lines (139 loc) · 3.81 KB
/
state.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
167
168
169
170
171
172
173
174
package main
import (
"log"
"strings"
"time"
"encoding/json"
"os"
"path"
"context"
"github.com/bregydoc/vis/rgy"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
)
// RenvestgyState represents a global state of renvestgy
type RenvestgyState struct {
Version string `json:"version"`
Timestamp time.Time `json:"timestamp"`
WalletPulicKey common.Address `json:"wallet_pulic_key"`
PrivateKey string `json:"private_key"`
Investors []*Investor `json:"investors"`
Developers []*Developer `json:"developers"`
RGYs []*RGYx `json:"rgys"`
HTTPEthClient *ethclient.Client `json:"-"`
WSEthClient *ethclient.Client `json:"-"`
Events chan RenvestgyEvent `json:"-"`
}
// RenvestgyEvent is an renvestgy event
type RenvestgyEvent struct {
Timestamp time.Time
Type string
Data interface{}
}
// NewRenvestgyState returns a new instance of renvestgy state
func NewRenvestgyState(c context.Context, baseURL string, privateKey string, events chan RenvestgyEvent) (*RenvestgyState, error) {
clientWS, err := ethclient.Dial("ws://" + baseURL)
if err != nil {
return nil, err
}
clientHTTP, err := ethclient.Dial("http://" + baseURL)
if err != nil {
return nil, err
}
s := &RenvestgyState{
HTTPEthClient: clientHTTP,
WSEthClient: clientWS,
Events: events,
}
err = s.loadState(".")
if err != nil {
s.Timestamp = time.Now()
s.PrivateKey = privateKey
s.Version = "0.0.1"
s.Investors = []*Investor{}
s.Developers = []*Developer{}
s.RGYs = []*RGYx{}
publicKey, err := s.calculatePublicKey(c)
if err != nil {
return nil, err
}
s.WalletPulicKey = *publicKey
err = s.saveState(".")
if err != nil {
return nil, err
}
}
if len(s.RGYs) > 0 {
for _, r := range s.RGYs {
contract := r.ContractAddress
query := ethereum.FilterQuery{
Addresses: []common.Address{contract},
}
logs := make(chan types.Log)
sub, err := s.WSEthClient.SubscribeFilterLogs(context.Background(), query, logs)
if err != nil {
log.Fatal(err)
}
go func() {
log.Println("[STATE] RGY " + contract.String() + " suscribed to events")
for {
select {
case err := <-sub.Err():
log.Fatal(err)
case vLog := <-logs:
contractAbi, err := abi.JSON(strings.NewReader(string(rgy.RgyABI)))
if err != nil {
log.Fatal(err)
}
eventShareSold := new(rgy.RgyShareSold)
eventAvailableToTransferChange := new(rgy.RgyAvailableToTransferChange)
if err = contractAbi.Unpack(eventShareSold, "ShareSold", vLog.Data); err == nil {
events <- RenvestgyEvent{
Timestamp: time.Now(),
Type: "ShareSold",
Data: eventShareSold,
}
} else if err = contractAbi.Unpack(eventAvailableToTransferChange, "AvailableToTransferChange", vLog.Data); err == nil {
events <- RenvestgyEvent{
Timestamp: time.Now(),
Type: "AvailableToTransferChange",
Data: eventAvailableToTransferChange,
}
}
}
}
}()
}
}
return s, nil
}
func (state *RenvestgyState) saveState(dir string) error {
if dir == "" {
dir = "."
}
stateFile := path.Join(dir, "state.json")
file, err := os.OpenFile(stateFile, os.O_RDWR|os.O_CREATE, 0644)
if err != nil {
return err
}
defer file.Close()
enc := json.NewEncoder(file)
enc.SetIndent("", " ")
return enc.Encode(state)
}
func (state *RenvestgyState) loadState(dir string) error {
if dir == "" {
dir = "."
}
stateFile := path.Join(dir, "state.json")
file, err := os.OpenFile(stateFile, os.O_RDWR, 0644)
if err != nil {
return err
}
defer file.Close()
dec := json.NewDecoder(file)
return dec.Decode(state)
}