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setup.go
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setup.go
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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Setup downloads needed Closure files and generates optimized JS files.
package main
import (
"bytes"
"flag"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"path"
"path/filepath"
"runtime"
"github.com/google/battery-historian/bugreportutils"
"github.com/google/battery-historian/historianutils"
)
const (
closureCompilerVersion = "20170409"
closureCompilerZip = "compiler-" + closureCompilerVersion + ".zip"
closureCompilerJar = "closure-compiler-v" + closureCompilerVersion + ".jar"
closureCompilerURL = "http://dl.google.com/closure-compiler/" + closureCompilerZip
thirdPartyDir = "third_party"
compiledDir = "compiled"
)
var rebuild = flag.Bool("rebuild", false, "Whether or not clear all setup files and start from scratch.")
// runCommand runs the given command and only prints the output or error if they're not empty.
func runCommand(name string, args ...string) {
out, err := historianutils.RunCommand(name, args...)
if err != nil {
fmt.Println(err)
}
if out != "" {
fmt.Println(out)
}
}
// saveFile saves the given contents to the path. relPath must point directly to the file to write to.
func saveFile(relPath string, contents []byte) error {
f, err := os.Create(relPath)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, bytes.NewReader(contents))
return err
}
func deletePath(path string) error {
if _, err := os.Stat(path); os.IsNotExist(err) {
// Path doesn't exist. Nothing to delete.
return nil
}
if runtime.GOOS == "windows" {
// os.RemoveAll won't remove read-only files (eg. .git files) on Windows.
// Modify the permissions path to be writable on Windows.
filepath.Walk(path, func(p string, info os.FileInfo, err error) error {
if err != nil {
return err
}
return os.Chmod(p, 0777)
})
}
return os.RemoveAll(path)
}
func main() {
flag.Parse()
if *rebuild {
fmt.Println("\nClearing files...")
if err := deletePath(thirdPartyDir); err != nil {
fmt.Printf("Failed to delete %s directory: %v\n", thirdPartyDir, err)
return
}
if err := deletePath(compiledDir); err != nil {
fmt.Printf("Failed to delete %s directory: %v\n", compiledDir, err)
return
}
}
os.Mkdir(thirdPartyDir, 0777)
os.Mkdir(compiledDir, 0777)
wd, err := os.Getwd()
if err != nil {
fmt.Printf("Unable to get working directory: %v\n", err)
return
}
closureLibraryDir := path.Join(wd, thirdPartyDir, "closure-library")
closureCompilerDir := path.Join(wd, thirdPartyDir, "closure-compiler")
axisDir := path.Join(thirdPartyDir, "flot-axislabels")
if _, err := os.Stat(closureLibraryDir); os.IsNotExist(err) {
fmt.Println("\nDownloading Closure library...")
runCommand("git", "clone", "https://github.com/google/closure-library", closureLibraryDir)
}
_, errD := os.Stat(closureCompilerDir)
_, errF := os.Stat(path.Join(closureCompilerDir, closureCompilerZip))
if os.IsNotExist(errD) || os.IsNotExist(errF) {
fmt.Println("\nDownloading Closure compiler...")
// Current compiler, if any, is not current. Remove old files.
if err := deletePath(closureCompilerDir); err != nil {
fmt.Printf("Failed to clear compiler directory: %v\n", err)
}
// Download desired file.
os.Mkdir(closureCompilerDir, 0777)
resp, err := http.Get(closureCompilerURL)
if err != nil {
fmt.Printf("Failed to download Closure compiler: %v\n", err)
fmt.Printf("\nIf this persists, please manually download the compiler from %s into the %s directory, unzip it into the %s diretory, and rerun this script.\n\n", closureCompilerURL, closureCompilerDir, closureCompilerDir)
return
}
defer resp.Body.Close()
contents, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Printf("Couldn't get zip contents: %v\n", err)
return
}
if err := saveFile(path.Join(closureCompilerDir, closureCompilerZip), contents); err != nil {
fmt.Printf("Couldn't save Closure zip file: %v\n", err)
return
}
files, err := bugreportutils.Contents("", contents)
if err != nil {
fmt.Printf("Couldn't get Closure zip contents: %v\n", err)
return
}
for n, c := range files {
name := n[1:]
if err := saveFile(path.Join(closureCompilerDir, name), c); err != nil {
fmt.Printf("Couldn't save Closure content file: %v\n", err)
return
}
}
}
if _, err := os.Stat(axisDir); os.IsNotExist(err) {
fmt.Println("\nDownloading 3rd-party JS files...")
runCommand("git", "clone", "https://github.com/markrcote/flot-axislabels.git", axisDir)
}
fmt.Println("\nGenerating JS runfiles...")
out, err := historianutils.RunCommand("python",
path.Join(closureLibraryDir, "closure/bin/build/depswriter.py"),
fmt.Sprintf(`--root=%s`, path.Join(closureLibraryDir, "closure", "goog")),
`--root_with_prefix=js ../../../../js`)
if err != nil {
fmt.Printf("Couldn't generate runfile: %v\n", err)
return
}
if err = saveFile(path.Join(wd, compiledDir, "historian_deps-runfiles.js"), []byte(out)); err != nil {
fmt.Printf("Couldn't save runfiles file: %v\n", err)
return
}
fmt.Println("\nGenerating optimized JS runfiles...")
runCommand("java", "-jar",
path.Join(closureCompilerDir, closureCompilerJar),
"--closure_entry_point", "historian.upload",
"--js", "js/*.js",
"--js", path.Join(closureLibraryDir, "closure/goog/base.js"),
"--js", path.Join(closureLibraryDir, "closure/goog/**/*.js"),
"--only_closure_dependencies",
"--generate_exports",
"--js_output_file", path.Join(wd, compiledDir, "historian-optimized.js"),
"--output_manifest", path.Join(wd, compiledDir, "manifest.MF"),
"--compilation_level", "SIMPLE_OPTIMIZATIONS",
)
}