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vechain.go
415 lines (355 loc) · 10.2 KB
/
vechain.go
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package vechain
import (
"bytes"
"context"
"crypto/sha256"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"strconv"
"strings"
"sync/atomic"
"time"
"github.com/myafeier/log"
)
// ============common============
//通用请求表单
type Form struct {
AppId string `json:"appid"`
AppKey string `json:"appkey"`
Nonce string `json:"nonce"`
Timestamp string `json:"timestamp"`
Signature string `json:"signature"`
}
//通用返回结构
type ResponseData struct {
Data interface{} `json:"data"`
Code int `json:"code"`
Message string `json:"message"`
}
func sign(timestamp int64, config *VechainConfig) (signature string) {
str := fmt.Sprintf("appid=%s&appkey=%s&nonce=%s×tamp=%d", config.DeveloperId, config.DeveloperKey, config.Nonce, timestamp)
signature = fmt.Sprintf("%x", sha256.Sum256([]byte(strings.ToLower(str))))
return
}
//区块链浏览器浏览地址
func BlockChainExploreLink(transactionId string, config *VechainConfig) string {
return fmt.Sprintf(config.ExploreLink, transactionId)
}
//=========================Token======================
//返回Token结构
type Token struct {
Token string `json:"token"`
Expire int64 `json:"expire"`
}
var lock int32 = 0
var refreshError = fmt.Errorf("token refreshing")
func GetToken(config *VechainConfig) (token *Token, err error) {
if atomic.LoadInt32(&lock) == 1 {
err = refreshError
return
}
atomic.StoreInt32(&lock, 1)
defer atomic.StoreInt32(&lock, 0)
timestamp := time.Now().Unix()
form := new(Form)
form.AppId = config.DeveloperId
form.AppKey = config.DeveloperKey
form.Nonce = config.Nonce
form.Timestamp = strconv.FormatInt(timestamp, 10)
form.Signature = sign(timestamp, config)
requestUrl := config.SiteUrl + "v1/tokens"
formByte, err := json.Marshal(form)
if err != nil {
log.Error("%s", err.Error())
return
}
log.Debug("%+v", *form)
data := bytes.NewReader(formByte)
retryTimes := 0
Retry:
retryTimes++
if retryTimes > 100 {
time.Sleep(1 * time.Minute)
} else if retryTimes > 1000 {
time.Sleep(1 * time.Hour)
}
request, err := http.NewRequest("POST", requestUrl, data)
if err != nil {
log.Error("%s", err.Error())
goto Retry
}
defer request.Body.Close()
request.Header.Set("Content-Type", "application/json")
client := &http.Client{}
response, err := client.Do(request)
if err != nil {
log.Error("%s", err.Error())
goto Retry
}
defer response.Body.Close()
if response.StatusCode != 200 {
log.Error("%s", err.Error())
goto Retry
}
body, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Error("%s", err.Error())
goto Retry
}
log.Debug("toke response :%s \n", body)
respData := new(ResponseData)
respData.Data = new(Token)
err = json.Unmarshal(body, respData)
if respData.Code != 1 {
err = fmt.Errorf("responseCode:%d error,message:%s\n", respData.Code, respData.Message)
log.Error(err.Error())
goto Retry
}
token = respData.Data.(*Token)
return
}
//======================Occupy=============
//抢占请求表单
type OccupyVidRequest struct {
RequestNo string `json:"requestNo"`
VidList []string `json:"vidList"`
}
//抢占响应结构
type OccupyVidResponse struct {
RequestNo string `json:"requestNo,omitempty"` // 请求编号
Url string `json:"url,omitempty"` // 扫码 url
Quantity int `json:"quantity,omitempty"` //请求的vid个数
Status string `json:"status,omitempty"` // 生成状态(GENERATING:抢占中,SUCCESS:成功)
SuccessList []string `json:"successList,omitempty"` // 抢占成功 vid 列表
FailureList []string `json:"failureList,omitempty"` // 抢占失败 vid 列表
}
// 抢占vid
func OccupyVid(ctx context.Context, config *VechainConfig, tokenServer IToken) (response *OccupyVidResponse, err error) {
url := "v1/vid/occupy"
request := (ctx.Value("request")).(*OccupyVidRequest)
data, err := json.Marshal(request)
if err != nil {
log.Error(err.Error())
return
}
//log.Debug("request: %s \n",data)
var justReturn bool
go func() {
<-ctx.Done()
err = ctx.Err()
justReturn = true
}()
retryTimes := 0
RetryWithNewToken:
token := tokenServer.GetToken()
Retry:
retryTimes++
if justReturn {
return
}
if retryTimes > 100 {
time.Sleep(1 * time.Hour)
} else if retryTimes > 10 {
time.Sleep(1 * time.Minute)
}
req, err := http.NewRequest("POST", config.SiteUrl+url, bytes.NewBuffer(data))
if err != nil {
log.Error(err.Error())
goto Retry
}
req.Header.Add("Content-Type", "application/json;charset=utf-8")
req.Header.Add("language", "zh_hans")
req.Header.Add("x-api-token", token)
client := http.DefaultClient
resp, err := client.Do(req)
if err != nil {
log.Error(err.Error())
goto Retry
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Error(err.Error())
goto Retry
}
if resp.StatusCode != http.StatusOK {
err = fmt.Errorf("RemoteServerStatusError code:%d,body:%s", resp.StatusCode, respBody)
log.Error(err.Error())
goto Retry
}
respData := new(ResponseData)
respData.Data = new(OccupyVidResponse)
err = json.Unmarshal(respBody, respData)
if err != nil {
log.Error(err.Error())
return
}
if respData.Code == 1 {
response = respData.Data.(*OccupyVidResponse)
log.Debug("response %+v \n", *response)
if response.Status == "GENERATING" {
time.Sleep(1 * time.Minute)
goto Retry
}
return
} else if respData.Code == 100004 {
goto RetryWithNewToken
} else {
err = fmt.Errorf("Occupy vid error, remote response Code:%d, MSG: %s.", respData.Code, respData.Message)
log.Error(err.Error())
}
return
}
//================================Post========
type PostArtifactResponse struct {
RequestNo string `json:"requestNo,omitempty"` // 请求编号
Uid string `json:"uid,omitempty"` // 上链子账户id
Status string `json:"status,omitempty"` // 生成状态(PROCESSING:上链中,SUCCESS:成功,FAILURE: 失败,INSUFFICIENT:费用不足)
TxList []*PostArtifactResponseData `json:"txList,omitempty"` //上链结果
}
type PostArtifactResponseData struct {
TxId string `json:"txid"` //上链事务id
ClauseIndex string `json:"clauseIndex"` // 每40个vid组成一个clause
Vid string `json:"vid"` //商品ID
DataHash string `json:"dataHash"` //?
}
type PostArtifactRequest struct {
RequestNo string `json:"requestNo"` //请求编号
Uid string `json:"uid"` //用户 Id
Data []*PostArtifactRequestData `json:"data,omitempty"`
}
type PostArtifactRequestData struct {
DataHash string `json:"dataHash"`
Vid string `json:"vid"`
}
// 异步上链
//
func PostArtifact(ctx context.Context, config *VechainConfig, tokenServer IToken) (response *PostArtifactResponse, err error) {
url := "v1/artifacts/hashinfo/create"
request := (ctx.Value("request")).(*PostArtifactRequest)
var data []byte
data, err = json.Marshal(request)
if err != nil {
log.Error(err.Error())
return
}
justReturn := false
go func() {
<-ctx.Done()
justReturn = true
err = ctx.Err()
log.Debug("ctx deadLine: %s", err.Error())
return
}()
retryTimes := 0
RetryWithNewToken:
token := tokenServer.GetToken()
Retry:
retryTimes++
if justReturn {
return
}
if retryTimes > 100 {
time.Sleep(1 * time.Minute)
} else if retryTimes > 1000 {
time.Sleep(1 * time.Hour)
}
req, err := http.NewRequest("POST", config.SiteUrl+url, bytes.NewBuffer(data))
if err != nil {
log.Error(err.Error())
return
}
req.Header.Add("Content-Type", "application/json;charset=utf-8")
req.Header.Add("language", "zh_hans")
req.Header.Add("x-api-token", token)
client := http.DefaultClient
resp, err := client.Do(req)
if err != nil {
log.Error(err.Error())
return
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
err = fmt.Errorf("[Error] After 10 times retry,RemoteServerStatusError code:%d", resp.StatusCode)
log.Error(err.Error())
goto Retry
}
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Error(err.Error())
goto Retry
}
respData := new(ResponseData)
respData.Data = new(PostArtifactResponse)
err = json.Unmarshal(respBody, respData)
if err != nil {
log.Error(err.Error())
goto Retry
}
if respData.Code == 1 {
log.Debug("postArtifact response %s,%+v \n", respData.Message, respData.Data)
response = respData.Data.(*PostArtifactResponse)
if response.Status == "PROCESSING" {
time.Sleep(1 * time.Minute)
goto Retry
}
} else if respData.Code == 100004 {
goto RetryWithNewToken
} else {
err = fmt.Errorf("PostArtifactResponseerror, remote response Code:%d, MSG: %s.", respData.Code, respData.Message)
log.Error(err.Error())
return
}
return
}
//================CreateAccount============
type CreateUser struct {
RequestNo string `json:"requestNo"` //请求编号
Uid string `json:"uid"` //用户 Id(已分配时返回)
Status string `json:"status"` //状态(PROCESSING:处理中,SUCCESS:成功,FAILURE:失败)
}
// 创建账号
// 在此系统只只需创建一个账号,无多账户的需求。
func GenerateSubAccount(requestNo, accountName string, config *VechainConfig, tokenServer IToken) (uid string, err error) {
url := "v1/artifacts/user/create"
postData := `
{
"requestNo":"%s",
"name":"%s"
}
`
req, err := http.NewRequest("POST", config.SiteUrl+url, bytes.NewBufferString(fmt.Sprintf(postData, requestNo, accountName)))
if err != nil {
log.Error(err.Error())
return
}
req.Header.Add("Content-Type", "application/json;charset=utf-8")
req.Header.Add("language", "zh_hans")
req.Header.Add("x-api-token", tokenServer.GetToken())
client := http.DefaultClient
resp, err := client.Do(req)
if err != nil {
log.Error(err.Error())
return
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Error(err.Error())
return
}
respData := new(ResponseData)
respData.Data = new(CreateUser)
err = json.Unmarshal(respBody, respData)
if err != nil {
log.Error(err.Error())
return
}
if respData.Code == 1 {
log.Debug("response %d,%s,%+v \n", resp.StatusCode, resp.Status, *(respData.Data.(*CreateUser)))
}
uid = respData.Data.(*CreateUser).Uid
return
}