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Add an example to create/delete/list Google Cloud Storage buckets.
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‎google/pom.xml‎

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<artifactId>google-compute-engine</artifactId>
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<version>${jclouds.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.jclouds.labs</groupId>
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<artifactId>google-cloud-storage</artifactId>
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<version>1.8.0</version>
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</dependency>
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</dependencies>
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</project>

‎google/src/main/java/org/jclouds/examples/google/cloudstorage/Constants.java‎

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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.jclouds.examples.google.cloudstorage;
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/**
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* Constants used by the Google Cloud Storage Examples.
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*/
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public interface Constants {
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String PROVIDER = System.getProperty("provider.cs", "google-cloud-storage");
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String ZONE = System.getProperty("zone", "europe-west1-a");
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String NAME = "jclouds-example";
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}

‎google/src/main/java/org/jclouds/examples/google/cloudstorage/ManageBuckets.java‎

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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. 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,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.jclouds.examples.google.cloudstorage;
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import com.google.common.io.Closeables;
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import com.google.common.io.Files;
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import org.jclouds.ContextBuilder;
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import org.jclouds.googlecloudstorage.GoogleCloudStorageApi;
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import org.jclouds.googlecloudstorage.domain.Bucket;
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import org.jclouds.googlecloudstorage.domain.BucketTemplate;
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import java.io.Closeable;
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import java.io.File;
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import java.io.IOException;
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import java.nio.charset.Charset;
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import static org.jclouds.examples.google.cloudstorage.Constants.PROVIDER;
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/**
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* This example manages buckets of Google Cloud Storage.
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*/
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public class ManageBuckets implements Closeable {
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private final GoogleCloudStorageApi cloudStorageApi;
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/**
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* To get a service account and its private key see [TODO: write some
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* documentation on the website and put a link to it]
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*
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* The first argument (args[0]) is your service account email address
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* (https://developers.google.com/console/help/new/#serviceaccounts).
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* The second argument (args[1]) is a path to your service account private key PEM file without a password. It is
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* used for server-to-server interactions (https://developers.google.com/console/help/new/#serviceaccounts).
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* The key is not transmitted anywhere.
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* The third argument (args[2]) is the command you want to perform: "create", "delete", or "list".
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* The fourth argument (args[3]) is the project name
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* (see https://developers.google.com/storage/docs/signup#activate).
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* This argument is skipped for command "delete".
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* The fifth argument (args[4]) is the name of the bucket that you want to create or delete.
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* This argument is skipped for command list.
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* NOTE: Bucket names must be unique across the entire Google Cloud Storage namespace
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* (https://developers.google.com/storage/docs/bucketnaming#requirements).
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*/
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public static void main(final String[] args) {
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String serviceAccountEmailAddress = args[0];
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String serviceAccountKey = null;
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try {
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serviceAccountKey = Files.toString(new File(args[1]), Charset.defaultCharset());
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} catch (IOException e) {
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System.err.println("Cannot open service account private key PEM file: " + args[1] + "\n" + e.getMessage());
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System.exit(1);
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}
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String command = args[2];
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String projectName = null;
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String bucketName = null;
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if (command.equals("create")) {
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projectName = args[3];
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bucketName = args[4];
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} else if (command.equals("delete")) {
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bucketName = args[3];
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if (args.length >= 5) {
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System.err.println("Command 'delete' require only one additional parameter (bucketName).");
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System.exit(1);
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}
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} else if (command.equals("list")) {
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projectName = args[3];
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if (args.length >= 5) {
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System.err.println("Command 'list' require only one additional parameters (projectName).");
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System.exit(1);
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}
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} else {
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System.err.println("Unknown command: " + command);
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System.exit(1);
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}
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ManageBuckets manageBuckets = new ManageBuckets(serviceAccountEmailAddress, serviceAccountKey);
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if (command.equals("create")) {
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manageBuckets.createBucket(projectName, bucketName);
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} else if (command.equals("delete")) {
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manageBuckets.deleteBucket(bucketName);
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} else if (command.equals("list")) {
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manageBuckets.listBuckets(projectName);
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} else {
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try {
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manageBuckets.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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throw new RuntimeException("Should never happen.");
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}
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try {
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manageBuckets.close();
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} catch (IOException e) {
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e.printStackTrace();
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System.exit(1);
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}
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}
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public ManageBuckets(final String serviceAccountEmailAddress, final String serviceAccountKey) {
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cloudStorageApi = ContextBuilder.newBuilder(PROVIDER)
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.credentials(serviceAccountEmailAddress, serviceAccountKey)
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.buildApi(GoogleCloudStorageApi.class);
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/*
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// This works fine:
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// System.out.println("result: " + cloudStorageApi.getBucketApi().listBucket("googpl-gcp-oss-7").size());
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///
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cloudStorageApi.getBucketApi().createBucket("googpl-gcp-oss-7", new BucketTemplate().name("marekws"));
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System.out.println("result: " + cloudStorageApi.getBucketApi().listBucket("googpl-gcp-oss-7").size());
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//
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*/
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}
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/**
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* Creates a bucket in a given project.
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* @param projectName Name of the project in which the bucket should be created.
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* @param bucketName Name of the bucket to create.
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*/
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public final void createBucket(final String projectName, final String bucketName) {
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Bucket bucket = null;
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try {
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bucket = cloudStorageApi.getBucketApi().createBucket(projectName, new BucketTemplate().name(bucketName));
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} catch (RuntimeException e) {
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System.err.println("Creating bucket " + bucketName + " failed.\n" + e.getMessage());
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System.exit(1);
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}
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if (bucket != null) {
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System.out.print("Bucket " + bucket.getName() + " successfully created in project " + projectName + " .");
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} else {
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System.err.println("Creating bucket " + bucketName + "failed.");
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System.exit(1);
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}
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}
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/**
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* Deletes a bucket.
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* @param bucketName Name of the bucket to delete.
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*/
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public final void deleteBucket(final String bucketName) {
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try {
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cloudStorageApi.getBucketApi().deleteBucket(bucketName);
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System.out.print("Bucket " + bucketName + " successfully deleted.");
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} catch (RuntimeException e) {
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System.err.println("Deleting bucket " + bucketName + " failed.\n" + e.getMessage());
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System.exit(1);
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}
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}
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/**
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* Lists all buckets in a given project.
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* @param projectName Name of the project in which the buckets should be listed.
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*/
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public final void listBuckets(final String projectName) {
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System.out.println("List of buckets for project " + projectName + ":");
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for (Bucket bucket : cloudStorageApi.getBucketApi().listBucket(projectName)) {
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System.out.println("* " + bucket.getName());
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}
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}
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/**
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* Always close your service when you're done with it.
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*
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* Note that closing quietly like this is not necessary in Java 7.
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* You would use try-with-resources in the main method instead.
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*/
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public final void close() throws IOException {
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Closeables.close(cloudStorageApi, true);
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}
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}

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