harness-drone/make.go

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// +build ignore
// This program builds Drone.
// $ go run make.go build test
//
// The output binaries go into the ./bin/ directory (under the
// project root, where make.go is)
package main
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strings"
)
var (
version = "0.4"
sha = rev()
)
// list of all posible steps that can be executed
// as part of the build process.
var steps = map[string]step{
"scripts": scripts,
"styles": styles,
"json": json,
"embed": embed,
"vet": vet,
"build": build,
"test": test,
"image": image,
}
func main() {
for _, arg := range os.Args[1:] {
step, ok := steps[arg]
if !ok {
fmt.Println("error: invalid step", arg)
os.Exit(1)
}
err := step()
if err != nil {
fmt.Println("error: failed step", arg)
os.Exit(1)
}
}
}
type step func() error
// embed step embeds static files in .go files.
func embed() error {
// embed drone.{revision}.css
// embed drone.{revision}.js
return nil
}
// scripts step concatinates all javascript files.
func scripts() error {
// concatinate scripts
return nil
}
// styles step concatinates the css files.
func styles() error {
// concatinate styles
// inject css variables?
return nil
}
// json step generates optimized json marshal and
// unmarshal functions to override defaults.
func json() error {
return nil
}
// build step creates the application binaries.
func build() error {
var bins = []struct {
input string
output string
}{
{"github.com/drone/drone/cmd/drone-server", "bin/drone"},
{"github.com/drone/drone/cmd/drone-agent", "bin/drone-agent"},
{"github.com/drone/drone/cmd/drone-build", "bin/drone-build"},
}
for _, bin := range bins {
ldf := fmt.Sprintf("-X main.revision %s -X main.version %s", sha, version)
cmd := exec.Command("go", "build", "-o", bin.output, "-ldflags", ldf, bin.input)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
trace(cmd.Args)
err := cmd.Run()
if err != nil {
return err
}
}
return nil
}
// vet step executes the `go vet` command
func vet() error {
cmd := exec.Command("go", "vet",
"github.com/drone/drone/pkg/...",
"github.com/drone/drone/cmd/...")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
trace(cmd.Args)
return cmd.Run()
}
// test step executes unit tests and coverage.
func test() error {
cmd := exec.Command("go", "test", "-cover", "./pkg/...")
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
trace(cmd.Args)
return cmd.Run()
}
// image step builds Docker images.
func image() error {
var images = []struct {
dir string
name string
}{
{"./bin/drone-agent", "drone/drone-agent"},
{"./bin/drone-server", "drone/drone"},
}
for _, image := range images {
path := filepath.Join(image.dir, "Dockerfile")
name := image.name + ":" + version
cmd := exec.Command("docker", "build", "-rm", path, name)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
trace(cmd.Args)
err := cmd.Run()
if err != nil {
return err
}
}
return nil
}
// trace is a helper fucntion that writes a command
// to stdout similar to bash +x
func trace(args []string) {
print("+ ")
println(strings.Join(args, " "))
}
// helper function to parse the git revision
func rev() string {
cmd := exec.Command("git", "rev-parse", "--short", "HEAD")
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raw, err := cmd.CombinedOutput()
if err != nil {
return "HEAD"
}
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return strings.Trim(string(raw), "\n")
}