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

google/pom.xml

@@ -50,5 +50,10 @@
       <artifactId>google-compute-engine</artifactId>
       <version>${jclouds.version}</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.jclouds.labs</groupId>
+      <artifactId>google-cloud-storage</artifactId>
+      <version>1.8.0</version>
+    </dependency>
   </dependencies>
 </project>

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

@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.jclouds.examples.google.cloudstorage;
+
+/**
+ * Constants used by the Google Cloud Storage Examples.
+ */
+public interface Constants {
+   String PROVIDER = System.getProperty("provider.cs", "google-cloud-storage");
+   String ZONE = System.getProperty("zone", "europe-west1-a");
+
+   String NAME = "jclouds-example";
+}

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

@@ -0,0 +1,185 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 org.jclouds.examples.google.cloudstorage;
+
+import com.google.common.io.Closeables;
+import com.google.common.io.Files;
+
+import org.jclouds.ContextBuilder;
+import org.jclouds.googlecloudstorage.GoogleCloudStorageApi;
+import org.jclouds.googlecloudstorage.domain.Bucket;
+import org.jclouds.googlecloudstorage.domain.BucketTemplate;
+
+import java.io.Closeable;
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.Charset;
+
+import static org.jclouds.examples.google.cloudstorage.Constants.PROVIDER;
+
+/**
+ * This example manages buckets of Google Cloud Storage.
+ */
+public class ManageBuckets implements Closeable {
+   private final GoogleCloudStorageApi cloudStorageApi;
+
+   /**
+    * To get a service account and its private key see [TODO: write some
+    * documentation on the website and put a link to it]
+    *
+    * The first argument (args[0]) is your service account email address
+    *    (https://developers.google.com/console/help/new/#serviceaccounts).
+    * The second argument (args[1]) is a path to your service account private key PEM file without a password. It is
+    *    used for server-to-server interactions (https://developers.google.com/console/help/new/#serviceaccounts).
+    *    The key is not transmitted anywhere.
+    * The third argument (args[2]) is the command you want to perform: "create", "delete", or "list".
+    * The fourth argument (args[3]) is the project name
+    *    (see https://developers.google.com/storage/docs/signup#activate).
+    *    This argument is skipped for command "delete".
+    * The fifth argument (args[4]) is the name of the bucket that you want to create or delete.
+    *    This argument is skipped for command list.
+    *    NOTE: Bucket names must be unique across the entire Google Cloud Storage namespace
+    *    (https://developers.google.com/storage/docs/bucketnaming#requirements).
+    */
+   public static void main(final String[] args) {
+      String serviceAccountEmailAddress = args[0];
+      String serviceAccountKey = null;
+      try {
+         serviceAccountKey = Files.toString(new File(args[1]), Charset.defaultCharset());
+      } catch (IOException e) {
+         System.err.println("Cannot open service account private key PEM file: " + args[1] + "\n" + e.getMessage());
+         System.exit(1);
+      }
+      String command = args[2];
+      String projectName = null;
+      String bucketName = null;
+      if (command.equals("create")) {
+         projectName = args[3];
+         bucketName = args[4];
+      } else if (command.equals("delete")) {
+         bucketName = args[3];
+         if (args.length >= 5) {
+            System.err.println("Command 'delete' require only one additional parameter (bucketName).");
+            System.exit(1);
+         }
+      } else if (command.equals("list")) {
+         projectName = args[3];
+         if (args.length >= 5) {
+            System.err.println("Command 'list' require only one additional parameters (projectName).");
+            System.exit(1);
+         }
+      } else {
+         System.err.println("Unknown command: " + command);
+         System.exit(1);
+      }
+      ManageBuckets manageBuckets = new ManageBuckets(serviceAccountEmailAddress, serviceAccountKey);
+
+      if (command.equals("create")) {
+         manageBuckets.createBucket(projectName, bucketName);
+      } else if (command.equals("delete")) {
+         manageBuckets.deleteBucket(bucketName);
+      } else if (command.equals("list")) {
+         manageBuckets.listBuckets(projectName);
+      } else {
+         try {
+            manageBuckets.close();
+         } catch (IOException e) {
+            e.printStackTrace();
+         }
+         throw new RuntimeException("Should never happen.");
+      }
+
+      try {
+         manageBuckets.close();
+      } catch (IOException e) {
+         e.printStackTrace();
+         System.exit(1);
+      }
+   }
+
+   public ManageBuckets(final String serviceAccountEmailAddress, final String serviceAccountKey) {
+      cloudStorageApi = ContextBuilder.newBuilder(PROVIDER)
+            .credentials(serviceAccountEmailAddress, serviceAccountKey)
+            .buildApi(GoogleCloudStorageApi.class);
+      /*
+      // This works fine:
+      // System.out.println("result: " + cloudStorageApi.getBucketApi().listBucket("googpl-gcp-oss-7").size());
+      ///
+      cloudStorageApi.getBucketApi().createBucket("googpl-gcp-oss-7", new BucketTemplate().name("marekws"));
+      System.out.println("result: " + cloudStorageApi.getBucketApi().listBucket("googpl-gcp-oss-7").size());
+      //
+       */
+   }
+
+   /**
+    * Creates a bucket in a given project.
+    * @param projectName Name of the project in which the bucket should be created.
+    * @param bucketName Name of the bucket to create.
+    */
+   public final void createBucket(final String projectName, final String bucketName) {
+      Bucket bucket = null;
+      try {
+         bucket = cloudStorageApi.getBucketApi().createBucket(projectName, new BucketTemplate().name(bucketName));
+      } catch (RuntimeException e) {
+         System.err.println("Creating bucket " + bucketName + " failed.\n" + e.getMessage());
+         System.exit(1);
+      }
+      if (bucket != null) {
+         System.out.print("Bucket " + bucket.getName() + " successfully created in project " + projectName + " .");
+      } else {
+         System.err.println("Creating bucket " + bucketName + "failed.");
+         System.exit(1);
+      }
+   }
+
+   /**
+    * Deletes a bucket.
+    * @param bucketName Name of the bucket to delete.
+    */
+   public final void deleteBucket(final String bucketName) {
+      try {
+         cloudStorageApi.getBucketApi().deleteBucket(bucketName);
+         System.out.print("Bucket " + bucketName + " successfully deleted.");
+      } catch (RuntimeException e) {
+         System.err.println("Deleting bucket " + bucketName + " failed.\n" + e.getMessage());
+         System.exit(1);
+      }
+   }
+
+   /**
+    * Lists all buckets in a given project.
+    * @param projectName Name of the project in which the buckets should be listed.
+    */
+   public final void listBuckets(final String projectName) {
+      System.out.println("List of buckets for project " + projectName + ":");
+      for (Bucket bucket : cloudStorageApi.getBucketApi().listBucket(projectName)) {
+         System.out.println("* " + bucket.getName());
+      }
+   }
+
+   /**
+    * Always close your service when you're done with it.
+    *
+    * Note that closing quietly like this is not necessary in Java 7.
+    * You would use try-with-resources in the main method instead.
+    */
+   public final void close() throws IOException {
+      Closeables.close(cloudStorageApi, true);
+   }
+}