rk-boot/v2: Golang 简单廉价的日志处理方案

# 除了 aws 相关参数，剩下的可以保留成如下的默认值
auth_enabled: false

server:
  http_listen_port: 3100
  
ingester:
  wal:
    dir: /loki/wal
  lifecycler:
    ring:
      kvstore:
        store: inmemory
      replication_factor: 1

schema_config:
  configs:
    - from: 2020-10-24
      store: boltdb-shipper
      object_store: aws
      schema: v11
      index:
        prefix: loki_index_
        period: 24h

storage_config:
  aws:
    bucketnames: loki-logs-1310384686                                # 请在腾讯云创建一个对象存储存储桶，并把存储桶名称写到这里
    endpoint: cos.ap-beijing.myqcloud.com                            # 腾讯云的对象存储域名后缀
    access_key_id: <Your access key id from TencentCloud>            # 腾讯云 AK
    secret_access_key: <Your secret access key from TencentCloud>    # 腾讯云 SK
    region: ap-beijing                                               # 对象存储存储桶地域
  boltdb_shipper:
    active_index_directory: /loki/index
    shared_store: s3
    cache_location: /loki/boltdb-cache
compactor:
  working_directory: /loki/boltdb-shipper-compactor
  shared_store: aws

$ docker run -v /Users/dongxuny/workspace/rk/rk-demo/gin/basic/loki.yaml:/etc/loki/local-config.yaml -p 3100:3100 grafana/loki

$ docker run -p 3000:3000 grafana/grafana

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

---
logger:
  - name: logger
    loki:
      enabled: true
      addr: localhost:3100        # 往 Loki 里推送日志
event:
  - name: event
    loki:
      enabled: true
      addr: localhost:3100        # 往 Loki 里推送 Event 类型日志
gin:
  - name: greeter
    port: 8080
    enabled: true
    loggerEntry: logger           # 告诉 Gin 使用 logger 作为日志实例
    eventEntry: event             # 告诉 Gin 使用 event 作为 Event 日志实例
    middleware:
      logging:
        enabled: true             # 启动日志中间件，API 会自动记录日志，并发送到 Loki 中

// Copyright (c) 2021 rookie-ninja
//
// Use of this source code is governed by an Apache-style
// license that can be found in the LICENSE file.
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"
	"github.com/rookie-ninja/rk-gin/v2/middleware/context"
	"net/http"
)

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

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

	// Bootstrap
	boot.Bootstrap(context.Background())

	// Get logger and event instance with bellow functions
	//logger := rkentry.GlobalAppCtx.GetLoggerEntry("logger")
	//event := rkentry.GlobalAppCtx.GetEventEntry("event")

	// Wait for shutdown sig
	boot.WaitForShutdownSig(context.Background())
}

func Greeter(ctx *gin.Context) {
	rkginctx.GetLogger(ctx).Info("Can you see me from Grafana Loki dashboard?")

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

type GreeterResponse struct {
	Message string
}

$ go run main.go
$ curl localhost:8080/v1/greeter