RequestId

Enable meta middleware.

Overview

Meta middleware will inject bellow information into response header.

Header key	Description
X-Request-Id	Auto generated request ID
X-[Prefix]-App-Domain	ENV value of DOMAIN
X-[Prefix]-App-Unix-Time	Current Unix time
X-[Prefix]-Received-Time	Unix time when request received

Install

go get github.com/rookie-ninja/rk-boot/v2
go get github.com/rookie-ninja/rk-gin/v2

Options

options	description	type	default
gin.middleware.meta.enabled	Enable meta middleware	boolean	false
gin.middleware.meta.prefix	X--XXX	string	RK
gin.middleware.meta.ignore	Ignore by path	[]string	[]

Quick start

1.Create boot.yaml

---
gin:
  - name: greeter
    port: 8080
    enabled: true
    middleware:
      meta:
        enabled: true                                      # Optional, default: false
#        ignore: [""]                                      # Optional, default: []
#        prefix: ""                                        # Optional, default: "RK"

2.Create main.go

package main

import (
  "context"
  "fmt"
  "github.com/gin-gonic/gin"
  "github.com/rookie-ninja/rk-boot/v2"
  "github.com/rookie-ninja/rk-gin/v2/boot"
  "net/http"
)

func main() {
  // Create a new boot instance.
  boot := rkboot.NewBoot()

  // Register handler
  entry := rkgin.GetGinEntry("greeter")
  entry.Router.GET("/v1/greeter", Greeter)

  // Bootstrap
  boot.Bootstrap(context.TODO())

  boot.WaitForShutdownSig(context.TODO())
}

func Greeter(ctx *gin.Context) {
  ctx.JSON(http.StatusOK, &GreeterResponse{
    Message: fmt.Sprintf("Hello %s!", ctx.Query("name")),
  })
}

type GreeterResponse struct {
  Message string
}

3.Validate

```shell script $ curl -vs -X GET "localhost:8080/v1/greeter?name=rk-dev" ... < X-Request-Id: dad72f8c-cd35-43b6-9414-493edf7e0d10 < X-Rk-App-Domain: * < X-Rk-App-Name: rk < X-Rk-App-Unix-Time: 2022-04-15T23:14:52.495+08:00 < X-Rk-App-Version: local < X-Rk-Received-Time: 2022-04-15T23:14:52.495+08:00 ... {"Message":"Hello rk-dev!"}

### _**Cheers**_
![](../../../../img/user-guide/cheers.png)

### 4.Override requestId
```go
func Greeter(ctx *gin.Context) {
    // Override request id
    rkginctx.SetHeaderToClient(ctx, rkmid.HeaderRequestId, "request-id-override")
    // We expect new request id attached to logger
    rkginctx.GetLogger(ctx).Info("Received request")

    ctx.JSON(http.StatusOK, &GreeterResponse{
        Message: fmt.Sprintf("Hello %s!", ctx.Query("name")),
    })
}

$ curl -vs -X GET "localhost:8080/v1/greeter?name=rk-dev"
...
< X-Request-Id: request-id-override
< X-Rk-App-Domain: *
< X-Rk-App-Name: rk
< X-Rk-App-Unix-Time: 2022-04-15T23:20:37.763436+08:00
< X-Rk-App-Version: local
< X-Rk-Received-Time: 2022-04-15T23:20:37.763436+08:00
...
{"Message":"Hello rk-dev!"}

Bellow logs will be available if logging middleware was enabled.

2022-04-15T23:21:22.452+0800    INFO    gin/main.go:59  Received request        {"requestId": "request-id-override"}
------------------------------------------------------------------------
endTime=2022-04-15T23:21:22.452678+08:00
startTime=2022-04-15T23:21:22.452528+08:00
elapsedNano=149138
timezone=CST
ids={"eventId":"request-id-override","requestId":"request-id-override"}
app={"appName":"rk","appVersion":"local","entryName":"greeter","entryType":"GinEntry"}
env={"arch":"amd64","domain":"*","hostname":"lark.local","localIP":"10.8.0.2","os":"darwin"}
payloads={"apiMethod":"GET","apiPath":"/v1/greeter","apiProtocol":"HTTP/1.1","apiQuery":"name=rk-dev","userAgent":"curl/7.64.1"}
counters={}
pairs={}
timing={}
remoteAddr=localhost:54763
operation=/v1/greeter
resCode=200
eventStatus=Ended
EOE

Cheers

5.Override header prefix

---
gin:
  - name: greeter
    ...
    middleware:
      meta:
        enabled: true
        prefix: "Override"

$ curl -X GET -vs "localhost:8080/v1/greeter?name=rk-dev"
...
< X-Override-App-Domain: *
< X-Override-App-Name: rk
< X-Override-App-Unix-Time: 2022-04-15T23:22:18.087064+08:00
< X-Override-App-Version: local
< X-Override-Received-Time: 2022-04-15T23:22:18.087064+08:00
< X-Request-Id: request-id-override
...
{"Message":"Hello rk-dev!"}

Cheers