aws-lambda使用gin框架示例

假设现在有个需求，项目需要部署到aws无服务器，但是我们的项目以及是成熟项目了，总不能从头开始写吧？

所以有了github.com/awslabs/aws-lambda-go-api-proxy这个项目

只需要改造启动部分,其他框架官网有示例

package main

import (
	"context"
	"fmt"
	"github.com/aws/aws-lambda-go/events"
	"github.com/aws/aws-lambda-go/lambda"
	"github.com/awslabs/aws-lambda-go-api-proxy/gin"
	"github.com/gin-gonic/gin"
	"net/http"
	"os"
)

var ginLambda *ginadapter.GinLambda

// 判断是不是lambda环境，
// 读环境变量或者配置,这是测试
func inLambda() bool {
	if lambdaTaskRoot := os.Getenv("AWS_LAMBDA"); lambdaTaskRoot != "" {
		return true
	}
	return false
}

// 设置路由
func Router() *gin.Engine {
	gin.SetMode(gin.DebugMode)
	r := gin.Default()
	r.GET("/", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{"message": "home page"})
	})
	r.GET("/ping", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{"message": "hello test completed successfully"})
	})
	return r
}

// lambda的event处理
func Handler(ctx context.Context, req events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {
	return ginLambda.ProxyWithContext(ctx, req)
}

func main() {
	r := Router()
	if inLambda() {
		fmt.Println("running in aws lambda")
		ginLambda = ginadapter.New(r)
		lambda.Start(Handler)
	} else {
		fmt.Println("running in local")
		err := r.Run(":8080")
		if err != nil {
			panic(err)
		}
	}
}