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Adding an example to delete a server in GCE
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najtmar authored and demobox committed May 7, 2014
1 parent 82f3903 commit 3d5de8bb4da30f5e1d526d929992e151c37de684
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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);
}
}

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