Golang

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Make a Golang function a service with fx

(v0.5.4 or newer)

Write a function like,

package main

import "github.com/gin-gonic/gin"

func fx(ctx *gin.Context) {
	ctx.JSON(200, gin.H{
		"message": "hello world",
	})
}

into a file named fx_hello.go

then deploy it with fx up command,

$ fx up -name fx_hello -p 10001 --healthcheck fx_hello.go
2019/08/30 10:12:11  info Build Service fx_hello: ✓
2019/08/30 10:12:11  info Run Service: ✓           
2019/08/30 10:12:11  info Service (fx_hello) is running on: 0.0.0.0:10001
2019/08/30 10:12:11  info service is running       
2019/08/30 10:12:12  info service is running       
2019/08/30 10:12:13  info service is running       
2019/08/30 10:12:14  info up function fx_hello(fx_hello.go) to machine localhost: ✓

test it using curl

$ curl -i 127.0.0.1:10001
HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
Date: Fri, 30 Aug 2019 17:12:33 GMT
Content-Length: 25

{"message":"hello world"}

ctx

The ctx object is exactly the context of Gin