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build.go: Use Go log package instead of custom die() implementation

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This commit is contained in:
Zlatko Čalušić
2017-06-02 09:26:02 +02:00
parent e591a330e5
commit 267f5d330a
1 changed files with 22 additions and 34 deletions
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56
build.go
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@@ -6,6 +6,7 @@ import (
"fmt"
"io"
"io/ioutil"
"log"
"os"
"os/exec"
"path"
@@ -62,13 +63,11 @@ func excludePath(name string) bool {
return true
}
// updateGopath builds a valid GOPATH at dst, with all Go files in src/ copied
// to dst/prefix/, so calling
// updateGopath builds a valid GOPATH at dst, with all Go files in src/ copied to dst/prefix/, so calling
//
// updateGopath("/tmp/gopath", "/home/u/rest-server", "github.com/restic/rest-server")
//
// with "/home/u/restic" containing the file "foo.go" yields the following tree
// at "/tmp/gopath":
// with "/home/u/restic" containing the file "foo.go" yields the following tree at "/tmp/gopath":
//
// /tmp/gopath
// └── src
@@ -150,13 +149,6 @@ func copyFile(dst, src string) error {
return err
}
// die prints the message with fmt.Fprintf() to stderr and exits with an error
// code.
func die(message string, args ...interface{}) {
fmt.Fprintf(os.Stderr, message, args...)
os.Exit(1)
}
func showUsage(output io.Writer) {
fmt.Fprintf(output, "USAGE: go run build.go OPTIONS\n")
fmt.Fprintf(output, "\n")
@@ -179,8 +171,7 @@ func verbosePrintf(message string, args ...interface{}) {
fmt.Printf("build: "+message, args...)
}
// cleanEnv returns a clean environment with GOPATH and GOBIN removed (if
// present).
// cleanEnv returns a clean environment with GOPATH and GOBIN removed (if present).
func cleanEnv() (env []string) {
for _, v := range os.Environ() {
if strings.HasPrefix(v, "GOPATH=") || strings.HasPrefix(v, "GOBIN=") {
@@ -226,8 +217,7 @@ func test(cwd, gopath string, args ...string) error {
return cmd.Run()
}
// getVersion returns the version string from the file VERSION in the current
// directory.
// getVersion returns the version string from the file VERSION in the current directory.
func getVersionFromFile() string {
buf, err := ioutil.ReadFile("VERSION")
if err != nil {
@@ -238,9 +228,8 @@ func getVersionFromFile() string {
return strings.TrimSpace(string(buf))
}
// getVersion returns a version string which is a combination of the contents
// of the file VERSION in the current directory and the version from git (if
// available).
// getVersion returns a version string which is a combination of the contents of the file VERSION in the current
// directory and the version from git (if available).
func getVersion() string {
versionFile := getVersionFromFile()
versionGit := getVersionFromGit()
@@ -258,8 +247,7 @@ func getVersion() string {
return fmt.Sprintf("%s (%s)", versionFile, versionGit)
}
// getVersionFromGit returns a version string that identifies the currently
// checked out git commit.
// getVersionFromGit returns a version string that identifies the currently checked out git commit.
func getVersionFromGit() string {
cmd := exec.Command("git", "describe",
"--long", "--tags", "--dirty", "--always")
@@ -274,8 +262,7 @@ func getVersionFromGit() string {
return version
}
// Constants represents a set of constants that are set in the final binary to
// the given value via compiler flags.
// Constants represents a set of constants that are set in the final binary to the given value via compiler flags.
type Constants map[string]string
// LDFlags returns the string that can be passed to go build's `-ldflags`.
@@ -290,10 +277,11 @@ func (cs Constants) LDFlags() string {
}
func main() {
log.SetFlags(0)
ver := runtime.Version()
if strings.HasPrefix(ver, "go1") && ver < "go1.7" {
fmt.Fprintf(os.Stderr, "Go version %s detected, rest-server requires at least Go 1.7\n", ver)
os.Exit(1)
log.Fatalf("Go version %s detected, rest-server requires at least Go 1.7\n", ver)
}
buildTags := []string{}
@@ -319,7 +307,7 @@ func main() {
keepGopath = true
case "-t", "-tags", "--tags":
if i+1 >= len(params) {
die("-t given but no tag specified")
log.Fatal("-t given but no tag specified")
}
skipNext = true
buildTags = strings.Split(params[i+1], " ")
@@ -340,7 +328,7 @@ func main() {
showUsage(os.Stdout)
return
default:
fmt.Fprintf(os.Stderr, "Error: unknown option %q\n\n", arg)
log.Printf("Error: unknown option %q\n\n", arg)
showUsage(os.Stderr)
os.Exit(1)
}
@@ -359,23 +347,23 @@ func main() {
root, err := os.Getwd()
if err != nil {
die("Getwd(): %v\n", err)
log.Fatalf("Getwd(): %v\n", err)
}
gopath, err := ioutil.TempDir("", fmt.Sprintf("%v-build-", config.Name))
if err != nil {
die("TempDir(): %v\n", err)
log.Fatalf("TempDir(): %v\n", err)
}
verbosePrintf("create GOPATH at %v\n", gopath)
if err = updateGopath(gopath, root, config.Namespace); err != nil {
die("copying files from %v/src to %v/src failed: %v\n", root, gopath, err)
log.Fatalf("copying files from %v/src to %v/src failed: %v\n", root, gopath, err)
}
vendor := filepath.Join(root, "vendor")
if directoryExists(vendor) {
if err = updateGopath(gopath, vendor, ""); err != nil {
die("copying files from %v to %v failed: %v\n", root, gopath, err)
log.Fatalf("copying files from %v to %v failed: %v\n", root, gopath, err)
}
}
@@ -383,7 +371,7 @@ func main() {
if !keepGopath {
verbosePrintf("remove %v\n", gopath)
if err = os.RemoveAll(gopath); err != nil {
die("remove GOPATH at %s failed: %v\n", err)
log.Fatalf("remove GOPATH at %s failed: %v\n", gopath, err)
}
} else {
verbosePrintf("leaving temporary GOPATH at %v\n", gopath)
@@ -399,7 +387,7 @@ func main() {
cwd, err := os.Getwd()
if err != nil {
die("Getwd() returned %v\n", err)
log.Fatalf("Getwd() returned %v\n", err)
}
output := filepath.Join(cwd, outputFilename)
@@ -419,7 +407,7 @@ func main() {
err = build(filepath.Join(gopath, "src"), targetGOOS, targetGOARCH, gopath, args...)
if err != nil {
die("build failed: %v\n", err)
log.Fatalf("build failed: %v\n", err)
}
if runTests {
@@ -427,7 +415,7 @@ func main() {
err = test(cwd, gopath, config.Tests...)
if err != nil {
die("running tests failed: %v\n", err)
log.Fatalf("running tests failed: %v\n", err)
}
}
}