Java tutorial
/* * 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. */ 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); } }