/
main.go
136 lines (116 loc) · 3.03 KB
/
main.go
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package main
import (
"encoding/base64"
"fmt"
"github.com/Azure/azure-sdk-for-go/storage"
"github.com/codegangsta/cli"
"io"
"os"
"path/filepath"
)
func walkFiles(source string, ignore string) ([]string, error) {
var items []string
err := filepath.Walk(source, func(p string, fi os.FileInfo, err error) error {
if err != nil || fi.IsDir() {
return err
}
rel, err := filepath.Rel(source, p)
if err != nil {
return err
}
var ignoreFile bool
if ignore != "" {
ignoreFile, err = filepath.Match(ignore, rel)
}
if err != nil || ignoreFile {
return err
}
items = append(items, p)
return nil
})
return items, err
}
func main() {
app := cli.NewApp()
app.Name = "blobxfer"
app.Usage = "Upload files to Azure Blob Storage"
app.Author = "Matthew Brown <me@matthewbrown.io>"
app.Version = "0.1.0"
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "storageaccountkey",
Value: "",
Usage: "The storage account key to use",
EnvVar: "STORAGE_ACCOUNT_KEY",
},
}
app.Action = func(ctx *cli.Context) {
if len(os.Args) != 4 {
fmt.Errorf("blobxfer requires 3 command line arguments. Got %v", len(os.Args))
os.Exit(1)
}
storageAccount := os.Args[1]
container := os.Args[2]
source := os.Args[3]
fmt.Printf("Uploading %s to %s/%s\n", source, storageAccount, container)
filelist, err := walkFiles(source, "")
if err != nil {
fmt.Errorf("Failed to open source: %s", err)
}
storageClient, err := storage.NewBasicClient(storageAccount, "")
if err != nil {
fmt.Errorf("Failed to create client: %s", err)
}
blobClient := storageClient.GetBlobService()
for _, f := range filelist {
blobURI := blobClient.GetBlobURL(container, f)
fmt.Printf("Uploading: %s\n", blobURI)
fd, err := os.Open(f)
if err != nil {
fmt.Errorf("Error reading file %s: %s", f, err)
os.Exit(1)
}
defer fd.Close()
err = blobClient.CreateBlockBlob(container, f)
if err != nil {
fmt.Errorf("Failed to create blobblock: %s", err)
os.Exit(1)
}
err = putBlockBlob(blobClient, container, f, fd, storage.MaxBlobBlockSize)
if err != nil {
fmt.Errorf("Failed to put blob: %v", err)
os.Exit(1)
}
}
}
app.Run(os.Args)
}
func putBlockBlob(b storage.BlobStorageClient, container, name string, blob io.Reader, chunkSize int) error {
if chunkSize <= 0 || chunkSize > storage.MaxBlobBlockSize {
chunkSize = storage.MaxBlobBlockSize
}
chunk := make([]byte, chunkSize)
n, err := blob.Read(chunk)
if err != nil && err != io.EOF {
return err
}
blockList := []storage.Block{}
for blockNum := 0; ; blockNum++ {
id := base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%011d", blockNum)))
data := chunk[:n]
err = b.PutBlock(container, name, id, data)
if err != nil {
return err
}
blockList = append(blockList, storage.Block{ID: id, Status: storage.BlockStatusLatest})
// Read next block
n, err = blob.Read(chunk)
if err != nil && err != io.EOF {
return err
}
if err == io.EOF {
break
}
}
return b.PutBlockList(container, name, blockList)
}