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client.go
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package lakala
import (
"context"
"crypto/sha256"
"encoding/hex"
"fmt"
"hash"
"net/http"
"strings"
"sync"
"time"
"github.com/go-pay/gopay"
"github.com/go-pay/gopay/pkg/xhttp"
"github.com/go-pay/util"
"github.com/go-pay/xlog"
)
// Client lakala
typeClientstruct {
ctx context.Context// 上下文
PartnerCodestring// partner_code:商户编码，由4~6位大写字母或数字构成
credentialCodestring// credential_code:系统为商户分配的开发校验码，请妥善保管，不要在公开场合泄露
IsProdbool// 是否生产环境
DebugSwitch gopay.DebugSwitch// 调试开关，是否打印日志
logger xlog.XLogger
hc*xhttp.Client
sha256Hash hash.Hash
mu sync.Mutex
}
// NewClient 初始化lakala户端
// partnerCode: 商户编码，由4~6位大写字母或数字构成
// credentialCode: 系统为商户分配的开发校验码，请妥善保管，不要在公开场合泄露
// isProd: 是否生产环境
funcNewClient(partnerCode,credentialCodestring,isProdbool) (client*Client,errerror) {
ifpartnerCode==gopay.NULL||credentialCode==gopay.NULL {
returnnil,gopay.MissLakalaInitParamErr
}
logger:=xlog.NewLogger()
logger.SetLevel(xlog.DebugLevel)
client=&Client{
ctx:context.Background(),
PartnerCode:partnerCode,
credentialCode:credentialCode,
IsProd:isProd,
DebugSwitch:gopay.DebugOff,
logger:logger,
hc:xhttp.NewClient(),
sha256Hash:sha256.New(),
}
returnclient,nil
}
// SetBodySize 设置http response body size(MB)
func (c*Client)SetBodySize(sizeMBint) {
ifsizeMB>0 {
c.hc.SetBodySize(sizeMB)
}
}
// SetHttpClient 设置自定义的xhttp.Client
func (c*Client)SetHttpClient(client*xhttp.Client) {
ifclient!=nil {
c.hc=client
}
}
func (c*Client)SetLogger(logger xlog.XLogger) {
iflogger!=nil {
c.logger=logger
}
}
// 公共参数处理 Query Params
func (c*Client)pubParamsHandle() (paramstring,errerror) {
bm:=make(gopay.BodyMap)
bm.Set("time",time.Now().UnixMilli())
bm.Set("nonce_str",util.RandomString(20))
sign,err:=c.getRsaSign(bm)
iferr!=nil {
return"",fmt.Errorf("GetRsaSign Error: %w",err)
}
bm.Set("sign",sign)
param=bm.EncodeURLParams()
return
}
// 验证签名
funcVerifySign(notifyReq*NotifyRequest,partnerCodestring,credentialCodestring) (errerror) {
validStr:=fmt.Sprintf("%v&%v&%v&%v",partnerCode,notifyReq.Time,notifyReq.NonceStr,credentialCode)
h:=sha256.New()
h.Write([]byte(validStr))
validSign:=strings.ToLower(hex.EncodeToString(h.Sum(nil)))
ifnotifyReq.Sign!=validSign {
returnfmt.Errorf("签名验证失败")
}
return
}
// getRsaSign 获取签名字符串
func (c*Client)getRsaSign(bm gopay.BodyMap) (signstring,errerror) {
var (
partnerCode=c.PartnerCode
ts=bm.Get("time")
nonceStr=bm.Get("nonce_str")
credentialCode=c.credentialCode
)
ifts==""||nonceStr=="" {
return"",fmt.Errorf("签名缺少必要的参数")
}
validStr:=fmt.Sprintf("%v&%v&%v&%v",partnerCode,ts,nonceStr,credentialCode)
c.mu.Lock()
deferfunc() {
c.sha256Hash.Reset()
c.mu.Unlock()
}()
c.sha256Hash.Write([]byte(validStr))
sign=strings.ToLower(hex.EncodeToString(c.sha256Hash.Sum(nil)))
return
}
// PUT 发起请求
func (c*Client)doPut(ctx context.Context,pathstring,bm gopay.BodyMap) (bs []byte,errerror) {
varurl=baseUrlProd+path
param,err:=c.pubParamsHandle()
iferr!=nil {
returnnil,err
}
req:=c.hc.Req()
req.Header.Add("Accept","application/json")
uri:=url+"?"+param
ifc.DebugSwitch==gopay.DebugOn {
c.logger.Debugf("Lakala_Url: %s",uri)
c.logger.Debugf("Lakala_Req_Body: %s",bm.JsonBody())
c.logger.Debugf("Lakala_Req_Headers: %#v",req.Header)
}
res,bs,err:=req.Put(uri).SendBodyMap(bm).EndBytes(ctx)
iferr!=nil {
returnnil,err
}
ifres.StatusCode!=http.StatusOK {
returnnil,fmt.Errorf("HTTP Request Error, StatusCode = %d",res.StatusCode)
}
returnbs,nil
}
// PUT 发起请求
func (c*Client)doPost(ctx context.Context,pathstring,bm gopay.BodyMap) (bs []byte,errerror) {
varurl=baseUrlProd+path
param,err:=c.pubParamsHandle()
iferr!=nil {
returnnil,err
}
req:=c.hc.Req()
req.Header.Add("Accept","application/json")
uri:=url+"?"+param
ifc.DebugSwitch==gopay.DebugOn {
c.logger.Debugf("Lakala_Url: %s",uri)
c.logger.Debugf("Lakala_Req_Body: %s",bm.JsonBody())
c.logger.Debugf("Lakala_Req_Headers: %#v",req.Header)
}
res,bs,err:=req.Post(uri).SendBodyMap(bm).EndBytes(ctx)
iferr!=nil {
returnnil,err
}
ifres.StatusCode!=http.StatusOK {
returnnil,fmt.Errorf("HTTP Request Error, StatusCode = %d",res.StatusCode)
}
returnbs,nil
}
// GET 发起请求
func (c*Client)doGet(ctx context.Context,path,queryParamsstring) (bs []byte,errerror) {
varurl=baseUrlProd+path
param,err:=c.pubParamsHandle()
iferr!=nil {
returnnil,err
}
ifqueryParams!="" {
param=param+"&"+queryParams
}
req:=c.hc.Req()
req.Header.Add("Accept","application/json")
uri:=url+"?"+param
ifc.DebugSwitch==gopay.DebugOn {
c.logger.Debugf("Lakala_Url: %s",uri)
c.logger.Debugf("Lakala_Req_Headers: %#v",req.Header)
}
res,bs,err:=req.Get(uri).EndBytes(ctx)
iferr!=nil {
returnnil,err
}
ifres.StatusCode!=http.StatusOK {
returnnil,fmt.Errorf("HTTP Request Error, StatusCode = %d",res.StatusCode)
}
returnbs,nil
}