go读取二进制文件编译信息

诉求

希望了解二进制文件编译时的信息

本地

可以通过go version -m ./binary查看：

$ go version -m ./go-pprof-practice 
./go-pprof-practice: go1.24.2
	path	github.com/wolfogre/go-pprof-practice
	mod	github.com/wolfogre/go-pprof-practice	v0.0.0-20230706085634-23c8f603cac9+dirty	
	build	-buildmode=exe
	build	-compiler=gc
	build	DefaultGODEBUG=asynctimerchan=1,gotestjsonbuildtext=1,gotypesalias=0,httplaxcontentlength=1,httpmuxgo121=1,httpservecontentkeepheaders=1,multipathtcp=0,netedns0=0,panicnil=1,randseednop=0,rsa1024min=0,tls10server=1,tls3des=1,tlsmlkem=0,tlsrsakex=1,tlsunsafeekm=1,winreadlinkvolume=0,winsymlink=0,x509keypairleaf=0,x509negativeserial=1,x509rsacrt=0,x509usepolicies=0
	build	CGO_ENABLED=1
	build	CGO_CFLAGS=
	build	CGO_CPPFLAGS=
	build	CGO_CXXFLAGS=
	build	CGO_LDFLAGS=
	build	GOARCH=amd64
	build	GOOS=linux
	build	GOAMD64=v1
	build	vcs=git
	build	vcs.revision=23c8f603cac9cde2cf7533287fc2091c37dc024f
	build	vcs.time=2023-07-06T08:56:34Z
	build	vcs.modified=true

vsc为版本控制相关字段，包含提交哈希时间以及编译时源码是否修改。

网络

对于在线服务，希望将编译信息封装成api便于确认版本。

package main

import (
	"fmt"
	"runtime/debug"
	"github.com/gin-gonic/gin"
)

func Info(c *gin.Context) {
	info, ok := debug.ReadBuildInfo()
	if !ok {
		c.JSON(500, gin.H{"error": "no build info available"})
		return
	}
	buildInfo := make(map[string]string)
	for _, setting := range info.Settings {
		buildInfo[setting.Key] = setting.Value
	}
	c.JSON(200, buildInfo)
}

func main() {
	router := gin.Default()
	router.GET("/info", Info)
	fmt.Println("Server starting on :8080")
	router.Run(":8080")
}

参考

Go1.18 新特性：编译后的二进制文件，将包含更多信息
debug package - runtime/debug - Go Packages