// Write file to Google Storage
func writeFile(client *http.Client, bucket, filename, destname string) error {
fmt.Printf("Writing %v to gs://%v ...\n", filename, bucket)
fmt.Printf("(Sometimes this takes a few mintues)\n")
// dummy value is used since a project name isn't necessary unless
// we are creating new buckets
ctx := cloud.NewContext("dummy", client)
wc := storage.NewWriter(ctx, bucket, destname)
wc.ContentType = "application/x-gzip"
wc.ACL = []storage.ACLRule{{storage.AllAuthenticatedUsers, storage.RoleReader}}
file, err := os.Open(filename)
if err != nil {
return err
}
defer file.Close()
_, err = io.Copy(wc, file)
if err != nil {
return err
}
if err := wc.Close(); err != nil {
return err
}
fmt.Printf("Upload successful!\n")
return nil
}
func ExampleNewWriter() {
ctx := Example_auth()
wc := storage.NewWriter(ctx, "bucketname", "filename1")
wc.ContentType = "text/plain"
wc.ACL = []storage.ACLRule{{storage.AllUsers, storage.RoleReader}}
if _, err := wc.Write([]byte("hello world")); err != nil {
log.Fatal(err)
}
if err := wc.Close(); err != nil {
log.Fatal(err)
}
log.Println("updated object:", wc.Object())
}
// createFile creates a file in Google Cloud Storage.
func (d *demo) createFile(fileName string) {
fmt.Fprintf(d.w, "Creating file /%v/%v\n", bucket, fileName)
wc := storage.NewWriter(d.ctx, bucket, fileName)
wc.ContentType = "text/plain"
wc.Metadata = map[string]string{
"x-goog-meta-foo": "foo",
"x-goog-meta-bar": "bar",
}
d.cleanUp = append(d.cleanUp, fileName)
if _, err := wc.Write([]byte("abcde\n")); err != nil {
d.errorf("createFile: unable to write data to bucket %q, file %q: %v", bucket, fileName, err)
return
}
if _, err := wc.Write([]byte(strings.Repeat("f", 1024*4) + "\n")); err != nil {
d.errorf("createFile: unable to write data to bucket %q, file %q: %v", bucket, fileName, err)
return
}
if err := wc.Close(); err != nil {
d.errorf("createFile: unable to close bucket %q, file %q: %v", bucket, fileName, err)
return
}
}