-
Notifications
You must be signed in to change notification settings - Fork 44
/
wasm_sample.go
181 lines (154 loc) · 4.98 KB
/
wasm_sample.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
175
176
177
178
179
180
181
package main
import (
"fmt"
sdk "github.com/ontio/ontology-go-sdk"
"encoding/binary"
"github.com/ontio/ontology-go-sdk/utils"
"github.com/ontio/ontology/common"
"io/ioutil"
"time"
)
func main() {
fmt.Println("==========================start============================")
testUrl := "http://127.0.0.1:20336"
testUrl = "http://polaris1.ont.io:20336"
//initialize ontsdk
ontSdk := sdk.NewOntologySdk()
//suppose you already start up a local wasm ontology node
ontSdk.NewRpcClient().SetAddress(testUrl)
//your wallet file
wallet, err := ontSdk.OpenWallet("./wallet.dat")
if err != nil {
fmt.Printf("error in OpenWallet:%s\n", err)
return
}
//modify me
walletpassword := "123456"
//we get the first account of the wallet by your password
signer, err := wallet.GetAccountByAddress("AVBzcUtgdgS94SpBmw4rDMhYA4KDq1YTzy", []byte(walletpassword))
if err != nil {
fmt.Printf("error in GetDefaultAccount:%s\n", err)
return
}
fmt.Printf("===signer address is %s\n", signer.Address.ToBase58())
//get a compiled wasm file from ont_cpp
wasmfile := "./OEP4.wasm"
//set timeout
timeoutSec := 30 * time.Second
address1 := "AX8opZCQBpEpYsFPKpZHNguWz2s3xpT7Wk"
// read wasm file and get the Hex fmt string
code, err := ioutil.ReadFile(wasmfile)
if err != nil {
fmt.Printf("error in ReadFile:%s\n", err)
return
}
codeHash := common.ToHexString(code)
//===========================================
gasprice := uint64(500)
invokegaslimit := uint64(200000)
deploygaslimit := uint64(200000000)
// deploy the wasm contract
fmt.Println("======DeployWasmVMSmartContract ==========")
txHash, err := ontSdk.WasmVM.DeployWasmVMSmartContract(
gasprice,
deploygaslimit,
signer,
codeHash,
"OEP4 wasm",
"1.0",
"author",
"email",
"desc",
)
if err != nil {
fmt.Printf("error in DeployWasmVMSmartContract:%s\n", err)
return
}
_, err = ontSdk.WaitForGenerateBlock(timeoutSec)
if err != nil {
fmt.Printf("error in WaitForGenerateBlock:%s\n", err)
return
}
fmt.Printf("the deploy contract txhash is %s\n", txHash.ToHexString())
//calculate the contract address from code
contractAddr, err := utils.GetContractAddress(codeHash)
if err != nil {
fmt.Printf("error in GetContractAddress:%s\n", err)
return
}
fmt.Printf("the contractAddr is %s\n", contractAddr.ToBase58())
fmt.Println("======InvokeWasmVMSmartContract init==========")
//============================================
//invoke wasm method
//we invoke "init" method first
txHash, err = ontSdk.WasmVM.InvokeWasmVMSmartContract(
gasprice, invokegaslimit, signer, contractAddr, "init", []interface{}{})
_, err = ontSdk.WaitForGenerateBlock(timeoutSec)
if err != nil {
fmt.Printf("error in WaitForGenerateBlock:%s\n", err)
return
}
fmt.Printf("init txhash is :%s\n", txHash.ToHexString())
//get smartcontract event by txhash
events, err := ontSdk.GetSmartContractEvent(txHash.ToHexString())
if err != nil {
fmt.Printf("error in GetSmartContractEvent:%s\n", err)
return
}
fmt.Printf("event is %v\n", events)
//State = 0 means transaction failed
if events.State == 0 {
fmt.Printf("error in events.State is 0 failed.\n")
return
}
fmt.Printf("events.Notify:%v", events.Notify)
for _, notify := range events.Notify {
fmt.Printf("%+v\n", notify)
}
//next we test transfer method
//1. we get another address from wallet,suppose you have created in the wallet
account2, err := wallet.GetAccountByAddress(address1, []byte(walletpassword))
if err != nil {
fmt.Printf("error in GetAccountByAddress:%s\n", err)
return
}
fmt.Println("======InvokeWasmVMSmartContract transfer==========")
//2. we construct a tx transfer 500 token from signer account to account2
txHash, err = ontSdk.WasmVM.InvokeWasmVMSmartContract(
gasprice, invokegaslimit, signer, contractAddr, "transfer", []interface{}{signer.Address, account2.Address, uint64(500)})
_, err = ontSdk.WaitForGenerateBlock(timeoutSec)
if err != nil {
fmt.Printf("error in WaitForGenerateBlock:%s\n", err)
return
}
//get smartcontract event by txhash
events, err = ontSdk.GetSmartContractEvent(txHash.ToHexString())
if err != nil {
fmt.Printf("error in GetSmartContractEvent:%s\n", err)
return
}
fmt.Printf("event is %v\n", events)
//State = 0 means transaction failed
if events.State == 0 {
fmt.Printf("error in events.State is 0 failed.\n")
return
}
fmt.Printf("events.Notify:%v", events.Notify)
for _, notify := range events.Notify {
//you check the notify here
fmt.Printf("%+v\n", notify)
}
//we will query the balance using pre-execuse method
res, err := ontSdk.WasmVM.PreExecInvokeWasmVMContract(contractAddr, "balanceOf", []interface{}{signer.Address})
if err != nil {
fmt.Printf("error in PreExecInvokeWasmVMContract:%s\n", err)
return
}
bs, err := res.Result.ToByteArray()
if err != nil {
fmt.Printf("error in ToByteArray:%s\n", err)
return
}
fmt.Printf("balance of %s is %d\n", signer.Address.ToBase58(), binary.LittleEndian.Uint64(bs))
fmt.Println("==============================end ==========================")
}