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- // Copyright 2017 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.
-
- package main
-
- import (
- "fmt"
- "io"
- "io/ioutil"
- "log"
- "net/http"
- "os"
-
- "google.golang.org/api/googleapi"
- storage "google.golang.org/api/storage/v1"
- )
-
- func init() {
- registerDemo("storage", storage.DevstorageReadWriteScope, storageMain)
- }
-
- func storageMain(client *http.Client, argv []string) {
- if len(argv) != 2 {
- fmt.Fprintln(os.Stderr, "Usage: storage filename bucket (to upload an object)")
- return
- }
-
- service, err := storage.New(client)
- if err != nil {
- log.Fatalf("Unable to create Storage service: %v", err)
- }
-
- filename := argv[0]
- bucket := argv[1]
-
- goFile, err := os.Open(filename)
- if err != nil {
- log.Fatalf("error opening %q: %v", filename, err)
- }
- storageObject, err := service.Objects.Insert(bucket, &storage.Object{Name: filename}).Media(goFile).Do()
- log.Printf("Got storage.Object, err: %#v, %v", storageObject, err)
- if err != nil {
- return
- }
-
- resp, err := service.Objects.Get(bucket, filename).Download()
- if err != nil {
- log.Fatalf("error downloading %q: %v", filename, err)
- }
- defer resp.Body.Close()
-
- n, err := io.Copy(ioutil.Discard, resp.Body)
- if err != nil {
- log.Fatalf("error downloading %q: %v", filename, err)
- }
-
- log.Printf("Downloaded %d bytes", n)
-
- // Test If-None-Match - should get a "HTTP 304 Not Modified" response.
- obj, err := service.Objects.Get(bucket, filename).IfNoneMatch(storageObject.Etag).Do()
- log.Printf("Got obj, err: %#v, %v", obj, err)
- if googleapi.IsNotModified(err) {
- log.Printf("Success. Object not modified since upload.")
- } else {
- log.Printf("Error: expected object to not be modified since upload.")
- }
- }
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