78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"google.golang.org/api/googleapi"
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storage "google.golang.org/api/storage/v1"
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)
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func init() {
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registerDemo("storage", storage.DevstorageReadWriteScope, storageMain)
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}
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func storageMain(client *http.Client, argv []string) {
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if len(argv) != 2 {
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fmt.Fprintln(os.Stderr, "Usage: storage filename bucket (to upload an object)")
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return
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}
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service, err := storage.New(client)
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if err != nil {
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log.Fatalf("Unable to create Storage service: %v", err)
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}
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filename := argv[0]
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bucket := argv[1]
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goFile, err := os.Open(filename)
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if err != nil {
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log.Fatalf("error opening %q: %v", filename, err)
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}
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storageObject, err := service.Objects.Insert(bucket, &storage.Object{Name: filename}).Media(goFile).Do()
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log.Printf("Got storage.Object, err: %#v, %v", storageObject, err)
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if err != nil {
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return
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}
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resp, err := service.Objects.Get(bucket, filename).Download()
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if err != nil {
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log.Fatalf("error downloading %q: %v", filename, err)
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}
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defer resp.Body.Close()
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n, err := io.Copy(ioutil.Discard, resp.Body)
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if err != nil {
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log.Fatalf("error downloading %q: %v", filename, err)
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}
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log.Printf("Downloaded %d bytes", n)
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// Test If-None-Match - should get a "HTTP 304 Not Modified" response.
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obj, err := service.Objects.Get(bucket, filename).IfNoneMatch(storageObject.Etag).Do()
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log.Printf("Got obj, err: %#v, %v", obj, err)
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if googleapi.IsNotModified(err) {
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log.Printf("Success. Object not modified since upload.")
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} else {
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log.Printf("Error: expected object to not be modified since upload.")
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}
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}
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