dtm/examples/saga.go
2021-05-16 10:21:18 +08:00

76 lines
2.2 KiB
Go

package example
func TansIn() {
}
func main() {
}
/*
import { ServiceContext } from "@ivy/api/globals"
import { generateTid } from "@ivy/api/ivy"
import { redis } from "@ivy/api/objects"
import { Saga } from '../../saga-cli'
async function getGlobalTid() {
return "global-" + await generateTid(redis)
}
export async function transIn(ctx: ServiceContext) {
let { gid, sid } = ctx.query
let { amount, transIn } = ctx.data
console.log(`gid: ${gid} sid: ${sid} transIn ${amount}`)
if (transIn === 'fail') {
throw { code: "DATA_ERROR", message: "tranIn error FAIL" }
}
return { messag: 'SUCCESS' }
}
export async function transInCompensate(ctx: ServiceContext) {
let { gid, sid } = ctx.query
let { amount } = ctx.data
console.log(`gid: ${gid} sid: ${sid} tranInCompensate ${amount}`)
return { message: 'SUCCESS' }
}
export async function transOut(ctx: ServiceContext) {
let { gid, sid } = ctx.query
let { amount, transIn, transOut } = ctx.data
console.log(`gid: ${gid} sid: ${sid} transOut ${amount}`)
if (transOut === 'fail') {
throw { code: "DATA_ERROR", message: "tranIn error FAIL" }
}
return { message: 'SUCCESS' }
}
export async function transOutCompensate(ctx: ServiceContext) {
let { gid, sid } = ctx.query
let { amount } = ctx.data
console.log(`gid: ${gid} sid: ${sid} tranOutCompensate ${amount}`)
return { message: 'SUCCESS' }
}
export async function transQuery(ctx: ServiceContext) {
let { gid } = ctx.query
return { message: 'SUCCESS' }
// return `gid: ${gid} ` + (Math.random() * 3 > 1 ? 'SUCCESS' : 'FAIL')
}
let host = "http://localhost:4005"
export async function startSagaTrans(ctx: ServiceContext) {
await ctx.beginTransaction()
let gid = await getGlobalTid()
console.log(`order: ${gid} created`)
let { transIn, transOut } = ctx.data
let saga = new Saga(`${host}/api/core/saga-svr`, gid)
saga.add(`${host}/api/core/dtrans/transIn`, `${host}/api/core/dtrans/transInCompensate`, { amount: 30, transIn, transOut })
saga.add(`${host}/api/core/dtrans/transOut`, `${host}/api/core/dtrans/transOutCompensate`, { amount: 30, transIn, transOut })
await saga.prepare(`${host}/api/core/dtrans/transQuery`)
await ctx.trans.commit()
await saga.commit()
}
*/