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cli.go
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cli.go
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package main
import (
"flag"
"fmt"
"log"
"mime"
"os"
"path"
"path/filepath"
"runtime"
"strconv"
"strings"
"sync"
"github.com/mitchellh/goamz/aws"
"github.com/mitchellh/goamz/s3"
)
const (
NAME = "PipelineDeals S3 asset uploader"
LICENSE = "Licensed under the MIT license"
VERSION = "0.3.0"
)
var (
bucket = flag.String("b", "assets.pipelinedeals.com", "AWS S3 bucket to upload assets to")
directory = flag.String("d", "", "Directory of assets to upload")
key = flag.String("k", "", "Key to preface to asset")
maxWorkers = flag.Int("w", 50, "Max number of workers to start")
maxQueueSize = flag.Int("q", 1000, "Max size of upload queue")
help = flag.Bool("help", false, "You're looking at it")
h = flag.Bool("h", false, "You're looking at it")
version = flag.Bool("v", false, "Show version")
)
type Upload struct {
Path string
Dir string
Bucket string
PrefixKey string
WaitGroup *sync.WaitGroup
}
func (u *Upload) RelativePath() string {
relativePath := strings.TrimPrefix(u.Path, u.Dir+"/")
if u.PrefixKey != "" {
relativePath = u.PrefixKey + "/" + relativePath
}
return relativePath
}
func (u *Upload) FileType() string {
ext := filepath.Ext(u.Path)
fileType := mime.TypeByExtension(ext)
return fileType
}
func (u *Upload) Put() {
auth, _ := aws.EnvAuth()
client := s3.New(auth, aws.USEast)
b := client.Bucket(u.Bucket)
file, err := os.Open(u.Path)
defer file.Close()
if err != nil {
log.Fatal(err)
}
stat, err := file.Stat()
if err != nil {
log.Fatal(err)
}
headers := map[string][]string{
"Content-Length": {strconv.FormatInt(stat.Size(), 10)},
"Content-Type": {u.FileType()},
"Cache-Control": {"max-age=31104000"},
}
relativePath := u.RelativePath()
err = b.PutReaderHeader(relativePath, file, stat.Size(), headers, s3.ACL("public-read"))
fmt.Printf("Path: %s\n", relativePath)
if err != nil {
log.Fatal(err)
}
}
type Worker struct {
id int
uploadQueue chan *Upload
}
func NewWorker(id int, uploadQueue chan *Upload) Worker {
return Worker{
id: id,
uploadQueue: uploadQueue,
}
}
func (w Worker) start() {
go func() {
for {
select {
case upload := <-w.uploadQueue:
upload.Put()
upload.WaitGroup.Done()
}
}
}()
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
log.SetOutput(os.Stdout)
log.SetFlags(0)
startupInfo()
flag.Usage = printHelp
flag.Parse()
if *help || *h {
printHelp()
os.Exit(0)
}
if *version {
os.Exit(0)
}
_, err := aws.EnvAuth()
if err != nil {
log.Fatal(err)
}
uploadQueue := make(chan *Upload, *maxQueueSize)
var wg sync.WaitGroup
for i := 0; i < *maxWorkers; i++ {
worker := NewWorker(i, uploadQueue)
worker.start()
}
dir := path.Clean(*directory)
publicFileList, err := GetFileList(dir)
if err != nil {
log.Fatal(err)
}
for _, path := range publicFileList {
upload := &Upload{
Path: path,
Dir: dir,
Bucket: *bucket,
PrefixKey: *key,
WaitGroup: &wg,
}
wg.Add(1)
go func() {
uploadQueue <- upload
}()
}
wg.Wait()
}
func GetFileList(dir string) (fileList []string, err error) {
err = filepath.Walk(dir, func(path string, fi os.FileInfo, err error) error {
if err != nil {
log.Fatalf("Looks like %s isn't a valid app directory\n", path)
}
if fi.Mode().IsRegular() {
fileList = append(fileList, path)
}
return nil
})
return fileList, err
}
func printHelp() {
log.Println("-b\t\tAWS S3 target bucket, default: assets.pipelinedeals.com")
log.Println("-d\t\tDirectory of assets to upload, default: ''")
log.Println("-k\t\tKey to preface the asset with, default: ''")
log.Println("-w\t\tMax number of workers to start, default: 50")
log.Println("-q\t\tKey Max size of upload queue, default: 1000")
log.Println("-v\t\tShow version and license information")
log.Println("-h\t\tThis help screen")
}
func startupInfo() {
log.Println(NAME, VERSION)
log.Println("")
log.Println("Copyright © 2015 PipelineDeals")
log.Println(LICENSE)
log.Println("")
}