Adding an example to delete a server in GCE
diff --git a/google/src/main/java/org/jclouds/examples/google/computeengine/DeleteServer.java b/google/src/main/java/org/jclouds/examples/google/computeengine/DeleteServer.java
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+/*
+ * 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.computeengine;
+
+import com.google.common.io.Closeables;
+import com.google.common.io.Files;
+
+import org.jclouds.ContextBuilder;
+import org.jclouds.compute.ComputeService;
+import org.jclouds.compute.ComputeServiceContext;
+import org.jclouds.compute.domain.NodeMetadata;
+
+import java.io.Closeable;
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.Charset;
+import java.util.Properties;
+import java.util.Set;
+
+import static org.jclouds.compute.config.ComputeServiceProperties.POLL_INITIAL_PERIOD;
+import static org.jclouds.compute.config.ComputeServiceProperties.POLL_MAX_PERIOD;
+import static org.jclouds.compute.predicates.NodePredicates.inGroup;
+import static org.jclouds.examples.google.computeengine.Constants.*;
+
+/**
+ * This example destroys the server created in the CreateServer example.
+ *
+ * @author Marek Wieczorek (based on code by Everett Toews)
+ */
+public class DeleteServer implements Closeable {
+ private ComputeService computeService;
+
+ /**
+ * The first argument (args[0]) must be your service account email address
+ * The second argument (args[1]) must a path to your service account
+ * private key PEM file (without a password).
+ */
+ public static void main(String[] args) throws IOException {
+ String key = Files.toString(new File(args[1]), Charset.defaultCharset());
+
+ DeleteServer deleteServer = new DeleteServer(args[0], key);
+
+ try {
+ deleteServer.deleteServer();
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ }
+ finally {
+ deleteServer.close();
+ }
+ }
+
+ public DeleteServer(String serviceAccountEmailAddress, String serviceAccountKey) {
+ // These properties control how often jclouds polls for a status udpate
+ Properties overrides = new Properties();
+ overrides.setProperty(POLL_INITIAL_PERIOD, POLL_PERIOD_TWENTY_SECONDS);
+ overrides.setProperty(POLL_MAX_PERIOD, POLL_PERIOD_TWENTY_SECONDS);
+
+ ComputeServiceContext context = ContextBuilder.newBuilder(PROVIDER)
+ .credentials(serviceAccountEmailAddress, serviceAccountKey)
+ .overrides(overrides)
+ .buildView(ComputeServiceContext.class);
+ computeService = context.getComputeService();
+ }
+
+ /**
+ * This will delete all servers in group {@link Constants#NAME}
+ */
+ private void deleteServer() {
+ System.out.format("Delete Servers in group %s%n", NAME);
+
+ // This method will continue to poll for the server status and won't return until this server
+ // is DELETED.
+ Set<? extends NodeMetadata> servers = computeService.destroyNodesMatching(inGroup(NAME));
+
+ for (NodeMetadata server : servers) {
+ System.out.format(" %s%n", server);
+ }
+ }
+
+ /**
+ * Always close your service when you're done with it.
+ */
+ public void close() throws IOException {
+ Closeables.close(computeService.getContext(), true);
+ }
+}
