warren/cmd/warren/cmd_build.go

package main

import (
	"fmt"
	"github.com/dballard/warren/lib/warren"
	"log"
	"os"
	"os/exec"
	"time"
)

var buildUsage = `
warren build - Runs go build and populates the following variables:

  BuildGitBranch	from git
  BuildGitHash		from git
  BuildDate		from system time
`

var buildCmd = &warren.Command{
	Name:    "build",
	Usage:   "",
	Summary: "build the go server in the current directory",
	Help:    buildUsage,
	Run:     buildRun,
}

func buildRun(cmd *warren.Command, args ...string) {
	if len(args) > 0 && args[0] == "help" {
		fmt.Print(cmd.Help)
		return
	}

	date := time.Now().Format(time.RFC3339)
	gobuild := exec.Command("go", "build", "-ldflags", fmt.Sprintf("-X main.BuildDate %s -X main.BuildGitHash %s -X main.BuildGitBranch %s", date, warren.GitHash(), warren.GitBranch()))
	gobuild.Stderr = os.Stderr
	gobuild.Stdout = os.Stdout
	err := gobuild.Run()
	if err != nil {
		log.Fatal(err)
	}
}