Merge branch 'main' into alpha

This commit is contained in:
yedf2 2021-07-26 21:34:01 +08:00
commit fcc0eff799
4 changed files with 32 additions and 20 deletions

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@ -46,16 +46,17 @@ Configure mysql:
``` go
// business microservice address
const qsBusi = "http://localhost:8081/api/busi_saga"
req := &gin.H{"amount": 30} // Microservice payload
// The address where DtmServer serves DTM, which is a url
saga := dtmcli.NewSaga("http://localhost:8080/api/dtmsvr").
req := &gin.H{"amount": 30} // Microservice payload
// The address where DtmServer serves DTM, which is a url
DtmServer := "http://localhost:8080/api/dtmsvr"
saga := dtmcli.NewSaga(DtmServer, dtmcli.MustGenGid(DtmServer)).
// Add a TransOut sub-transaction, the operation is url: qsBusi+"/TransOut"
// compensation operation is url: qsBusi+"/TransOutCompensate"
Add(qsBusi+"/TransOut", qsBusi+"/TransOutCompensate", req).
Add(qsBusi+"/TransOut", qsBusi+"/TransOutCompensate", req).
// Add a TransIn sub-transaction, the operation is url: qsBusi+"/TransOut"
// compensation operation is url: qsBusi+"/TransInCompensate"
Add(qsBusi+"/TransIn", qsBusi+"/TransInCompensate", req)
// Submit the saga transaction, dtm will complete all sub-transactions/rollback all sub-transactions
Add(qsBusi+"/TransIn", qsBusi+"/TransInCompensate", req)
// Submit the saga transaction, dtm will complete all sub-transactions/rollback all sub-transactions
err := saga.Submit()
```
### Complete example

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@ -8,10 +8,23 @@
# GO语言分布式事务管理服务
DTM是首款golang的开源分布式事务管理器优雅的解决了幂等、空补偿、悬挂等分布式事务难题。提供了高性能和简单易用的分布式事务解决方案。
DTM是首款golang的开源分布式事务管理器优雅的解决了幂等、空补偿、悬挂等分布式事务难题。提供了简单易用、高性能、易水平扩展的分布式事务解决方案。
受邀参加中国数据库大会分享[多语言环境下分布式事务实践](http://dtcc.it168.com/yicheng.html#b9)
## 亮点
* 极易接入
- 支持HTTP提供非常简单的接口极大降低上手分布式事务的难度新手也能快速接入
* 使用简单
- 开发者不再担心悬挂、空补偿、幂等各类问题,框架层代为处理
* 跨语言
- 可适合多语言栈的公司使用。方便go、python、php、nodejs、ruby各类语言使用。
* 易部署、易扩展
- 仅依赖mysql部署简单易集群化易水平扩展
* 多种分布式事务协议支持
- TCC、SAGA、XA、事务消息
## 与其他框架对比
目前开源的分布式事务框架暂未看到非Java语言有成熟的框架。而Java语言的较多有阿里的SEATA、华为的ServiceComb-Pack京东的shardingsphere以及himlytcc-transactionByteTCC等等其中以seata应用最为广泛。
@ -24,7 +37,7 @@ DTM是首款golang的开源分布式事务管理器优雅的解决了幂等
|异常处理| <font color=green>[子事务屏障自动处理](https://zhuanlan.zhihu.com/p/388444465)</font>|<font color=orange>手动处理</font> |dtm解决了幂等、悬挂、空补偿|
| TCC事务| <font color=green></font>|<font color=green></font>||
| XA事务|<font color=green></font>|<font color=green></font>||
|AT事务|<font color=red></font>|<font color=green></font>|AT与XA类似性能更好|
|AT事务|<font color=red></font>|<font color=green></font>|AT与XA类似性能更好,但有脏回滚|
| SAGA事务 | <font color=orange>简单模式</font> | <font color=green>状态机复杂模式</font> |dtm的状态机模式在规划中|
|事务消息|<font color=green></font>|<font color=red></font>|dtm提供类似rocketmq的事务消息|
|通信协议|HTTP|dubbo等协议无HTTP|dtm后续将支持grpc类协议|
@ -55,14 +68,15 @@ DTM是首款golang的开源分布式事务管理器优雅的解决了幂等
``` GO
// 具体业务微服务地址
const qsBusi = "http://localhost:8081/api/busi_saga"
req := &gin.H{"amount": 30} // 微服务的载荷
// DtmServer为DTM服务的地址是一个url
saga := dtmcli.NewSaga("http://localhost:8080/api/dtmsvr").
// 添加一个TransOut的子事务正向操作为url: qsBusi+"/TransOut" 补偿操作为url: qsBusi+"/TransOutCompensate"
Add(qsBusi+"/TransOut", qsBusi+"/TransOutCompensate", req).
// 添加一个TransIn的子事务正向操作为url: qsBusi+"/TransOut" 补偿操作为url: qsBusi+"/TransInCompensate"
Add(qsBusi+"/TransIn", qsBusi+"/TransInCompensate", req)
// 提交saga事务dtm会完成所有的子事务/回滚所有的子事务
req := &gin.H{"amount": 30} // 微服务的载荷
// DtmServer为DTM服务的地址是一个url
DtmServer := "http://localhost:8080/api/dtmsvr"
saga := dtmcli.NewSaga(DtmServer, dtmcli.MustGenGid(DtmServer)).
// 添加一个TransOut的子事务正向操作为url: qsBusi+"/TransOut" 补偿操作为url: qsBusi+"/TransOutCompensate"
Add(qsBusi+"/TransOut", qsBusi+"/TransOutCompensate", req).
// 添加一个TransIn的子事务正向操作为url: qsBusi+"/TransOut" 补偿操作为url: qsBusi+"/TransInCompensate"
Add(qsBusi+"/TransIn", qsBusi+"/TransInCompensate", req)
// 提交saga事务dtm会完成所有的子事务/回滚所有的子事务
err := saga.Submit()
```

2
go.mod
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@ -7,7 +7,7 @@ require (
github.com/gin-gonic/gin v1.6.3
github.com/go-playground/assert/v2 v2.0.1
github.com/go-resty/resty/v2 v2.6.0
github.com/json-iterator/go v1.1.10
github.com/json-iterator/go v1.1.10 // indirect
github.com/kr/pretty v0.1.0 // indirect
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
github.com/modern-go/reflect2 v1.0.1 // indirect

3
go.sum
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@ -91,8 +91,5 @@ gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C
gorm.io/driver/mysql v1.0.3 h1:+JKBYPfn1tygR1/of/Fh2T8iwuVwzt+PEJmKaXzMQXg=
gorm.io/driver/mysql v1.0.3/go.mod h1:twGxftLBlFgNVNakL7F+P/x9oYqoymG3YYT8cAfI9oI=
gorm.io/gorm v1.20.4/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
gorm.io/gorm v1.20.12 h1:ebZ5KrSHzet+sqOCVdH9mTjW91L298nX3v5lVxAzSUY=
gorm.io/gorm v1.20.12/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
gorm.io/gorm v1.21.12 h1:3fQM0Eiz7jcJEhPggHEpoYnsGZqynMzverL77DV40RM=
gorm.io/gorm v1.21.12/go.mod h1:F+OptMscr0P2F2qU97WT1WimdH9GaQPoDW7AYd5i2Y0=