StorageSample2.java Source code

Introduction

Here is the source code for StorageSample2.java

Source

//[START all]
/*
 * Copyright (c) 2014 Google Inc.
 *
 * 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.
 */

import java.io.File;
import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.storage.Storage;
import com.google.api.services.storage.StorageScopes;
import com.google.api.services.storage.model.Bucket;
import com.google.api.services.storage.model.StorageObject;

/**
 * Main class for the Cloud Storage API command line sample. Demonstrates how to
 * make an authenticated API call using OAuth 2 helper classes.
 */
public class StorageSample2 {

    /**
     * Be sure to specify the name of your application. If the application name
     * is {@code null} or blank, the application will log a warning. Suggested
     * format is "MyCompany-ProductName/1.0". If you are running the sample on a
     * machine where you have access to a browser, set AUTH_LOCAL_WEBSERVER to
     * true.
     */
    private static final String APPLICATION_NAME = "Livro do Lecheta";
    private static final String BUCKET_NAME = Constants.BUCKET_NAME;

    /** Global instance of the JSON factory. */
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();

    /** Global instance of the HTTP transport. */
    private static HttpTransport httpTransport;

    private static Storage client;

    /** Authorizes the installed application to access user's protected data. */
    private static Credential authorize() throws Exception {
        Set<String> scopes = new HashSet<String>();
        scopes.add(StorageScopes.DEVSTORAGE_FULL_CONTROL);
        scopes.add(StorageScopes.DEVSTORAGE_READ_ONLY);
        scopes.add(StorageScopes.DEVSTORAGE_READ_WRITE);
        // Campo Email address criado no console.
        String accountId = Constants.ACCOUNT_ID;
        // Arquivo p12 baixado no console no momento de criar a chave.
        File p12File = new File(Constants.P12_FILE);
        // Autoriza a aplicao
        JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
        HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
        GoogleCredential credential = new GoogleCredential.Builder().setTransport(httpTransport)
                .setJsonFactory(JSON_FACTORY).setServiceAccountId(accountId)
                .setServiceAccountPrivateKeyFromP12File(p12File).setServiceAccountScopes(scopes).build();
        return credential;

    }

    public static void main(String[] args) {
        try {
            // Initialize the transport.
            httpTransport = GoogleNetHttpTransport.newTrustedTransport();

            // Authorization.
            Credential credential = authorize();

            // Set up global Storage instance.
            client = new Storage.Builder(httpTransport, JSON_FACTORY, credential)
                    .setApplicationName(APPLICATION_NAME).build();

            // Get metadata about the specified bucket.
            Storage.Buckets.Get getBucket = client.buckets().get(BUCKET_NAME);
            getBucket.setProjection("full");
            Bucket bucket = getBucket.execute();
            System.out.println("name: " + BUCKET_NAME);
            System.out.println("location: " + bucket.getLocation());
            System.out.println("timeCreated: " + bucket.getTimeCreated());
            System.out.println("owner: " + bucket.getOwner());

            // List the contents of the bucket.
            Storage.Objects.List listObjects = client.objects().list(BUCKET_NAME);
            com.google.api.services.storage.model.Objects objects;
            do {
                objects = listObjects.execute();
                List<StorageObject> items = objects.getItems();
                if (null == items) {
                    System.out
                            .println("There were no objects in the given bucket; try adding some and re-running.");
                    break;
                }
                for (StorageObject object : items) {
                    System.out.println(object.getName() + " (" + object.getSize() + " bytes)");
                }
                listObjects.setPageToken(objects.getNextPageToken());
            } while (null != objects.getNextPageToken());

        } catch (IOException e) {
            System.err.println(e.getMessage());
        } catch (Throwable t) {
            t.printStackTrace();
        }
        System.exit(1);
    }
}
// [END all]