mirror of https://github.com/dtm-labs/dtm.git
1 changed files with 32 additions and 39 deletions
@ -1,80 +1,73 @@ |
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/* |
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* Copyright (c) 2021 yedf. All rights reserved. |
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* Use of this source code is governed by a BSD-style |
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* license that can be found in the LICENSE file. |
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*/ |
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package busi |
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import ( |
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"fmt" |
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"log" |
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"time" |
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"github.com/dtm-labs/dtm/dtmcli" |
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"github.com/dtm-labs/dtm/dtmcli/logger" |
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"github.com/gin-gonic/gin" |
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) |
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// 启动命令:go run app/main.go qs
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// 事务参与者的服务地址
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const qsBusiAPI = "/api/busi_start" |
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const qsBusiPort = 8082 |
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const dtmServer = "http://localhost:36789/api/dtmsvr" |
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var qsBusi = fmt.Sprintf("http://localhost:%d%s", qsBusiPort, qsBusiAPI) |
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// QsMain main for qs
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func QsMain() { |
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QsStartSvr() |
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gid := QsFireRequest() |
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logger.Infof("transaction: %s succeed", gid) |
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QsFireRequest() |
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select {} |
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} |
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// QsStartSvr quick start: start server
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func QsStartSvr() { |
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app := gin.New() |
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qsAddRoute(app) |
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logger.Infof("quick start examples listening at %d", qsBusiPort) |
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log.Printf("quick start examples listening at %d", qsBusiPort) |
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go func() { |
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_ = app.Run(fmt.Sprintf(":%d", qsBusiPort)) |
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}() |
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time.Sleep(100 * time.Millisecond) |
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} |
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// QsFireRequest quick start: fire request
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func QsFireRequest() string { |
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req := &gin.H{"amount": 30} // 微服务的载荷
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// DtmServer为DTM服务的地址
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saga := dtmcli.NewSaga(dtmServer, dtmcli.MustGenGid(dtmServer)). |
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// 添加一个TransOut的子事务,正向操作为url: qsBusi+"/TransOut", 逆向操作为url: qsBusi+"/TransOutCom"
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Add(qsBusi+"/TransOut", qsBusi+"/TransOutCom", req). |
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// 添加一个TransIn的子事务,正向操作为url: qsBusi+"/TransOut", 逆向操作为url: qsBusi+"/TransInCom"
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Add(qsBusi+"/TransIn", qsBusi+"/TransInCom", req) |
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// 等待事务全部完成后再返回,可选
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saga.WaitResult = true |
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// 提交saga事务,dtm会完成所有的子事务/回滚所有的子事务
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err := saga.Submit() |
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logger.FatalIfError(err) |
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return saga.Gid |
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} |
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func qsAddRoute(app *gin.Engine) { |
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app.POST(qsBusiAPI+"/TransIn", func(c *gin.Context) { |
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logger.Infof("TransIn") |
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c.JSON(200, "") |
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// c.JSON(409, "") // Status 409 for Failure. Won't be retried
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log.Printf("TransIn") |
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// c.JSON(200, "")
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c.JSON(409, "") // Status 409 for Failure. Won't be retried
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}) |
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app.POST(qsBusiAPI+"/TransInCom", func(c *gin.Context) { |
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logger.Infof("TransInCom") |
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app.POST(qsBusiAPI+"/TransInCompensate", func(c *gin.Context) { |
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log.Printf("TransInCompensate") |
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c.JSON(200, "") |
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}) |
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app.POST(qsBusiAPI+"/TransOut", func(c *gin.Context) { |
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logger.Infof("TransOut") |
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log.Printf("TransOut") |
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c.JSON(200, "") |
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}) |
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app.POST(qsBusiAPI+"/TransOutCom", func(c *gin.Context) { |
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logger.Infof("TransOutCom") |
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app.POST(qsBusiAPI+"/TransOutCompensate", func(c *gin.Context) { |
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log.Printf("TransOutCompensate") |
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c.JSON(200, "") |
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}) |
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} |
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const dtmServer = "http://localhost:36789/api/dtmsvr" |
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// QsFireRequest quick start: fire request
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func QsFireRequest() string { |
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req := &gin.H{"amount": 30} // 微服务的载荷
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// DtmServer为DTM服务的地址
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saga := dtmcli.NewSaga(dtmServer, dtmcli.MustGenGid(dtmServer)). |
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// 添加一个TransOut的子事务,正向操作为url: qsBusi+"/TransOut", 逆向操作为url: qsBusi+"/TransOutCompensate"
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Add(qsBusi+"/TransOut", qsBusi+"/TransOutCompensate", req). |
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// 添加一个TransIn的子事务,正向操作为url: qsBusi+"/TransOut", 逆向操作为url: qsBusi+"/TransInCompensate"
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Add(qsBusi+"/TransIn", qsBusi+"/TransInCompensate", req) |
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// 提交saga事务,dtm会完成所有的子事务/回滚所有的子事务
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err := saga.Submit() |
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if err != nil { |
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panic(err) |
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} |
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return saga.Gid |
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} |
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