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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.rackspace.cloudblockstorage;
import static org.jclouds.examples.rackspace.cloudblockstorage.Constants.NAME;
import static org.jclouds.examples.rackspace.cloudblockstorage.Constants.PASSWORD;
import static org.jclouds.examples.rackspace.cloudblockstorage.Constants.PROVIDER;
import static org.jclouds.examples.rackspace.cloudblockstorage.Constants.ROOT;
import static org.jclouds.examples.rackspace.cloudblockstorage.Constants.ZONE;
import static org.jclouds.scriptbuilder.domain.Statements.exec;
import java.io.Closeable;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
import org.jclouds.ContextBuilder;
import org.jclouds.compute.ComputeService;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.compute.domain.ExecResponse;
import org.jclouds.compute.options.RunScriptOptions;
import org.jclouds.openstack.cinder.v1.CinderApi;
import org.jclouds.openstack.cinder.v1.domain.Volume;
import org.jclouds.openstack.cinder.v1.features.VolumeApi;
import org.jclouds.openstack.cinder.v1.predicates.VolumePredicates;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.domain.Server;
import org.jclouds.openstack.nova.v2_0.domain.VolumeAttachment;
import org.jclouds.openstack.nova.v2_0.domain.zonescoped.ZoneAndId;
import org.jclouds.openstack.nova.v2_0.extensions.VolumeAttachmentApi;
import org.jclouds.openstack.nova.v2_0.features.ServerApi;
import org.jclouds.scriptbuilder.ScriptBuilder;
import org.jclouds.scriptbuilder.domain.OsFamily;
import org.jclouds.sshj.config.SshjSshClientModule;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Closeables;
import com.google.inject.Module;
/**
* This example detaches the volume created in the CreateVolumeAndAttach example.
*/
public class DetachVolume implements Closeable {
private final ComputeService computeService;
private final NovaApi novaApi;
private final ServerApi serverApi;
private final VolumeAttachmentApi volumeAttachmentApi;
private final CinderApi cinderApi;
private final VolumeApi volumeApi;
/**
* To get a username and API key see
* http://www.jclouds.org/documentation/quickstart/rackspace/
*
* The first argument (args[0]) must be your username
* The second argument (args[1]) must be your API key
*/
public static void main(String[] args) throws IOException {
DetachVolume detachVolume = new DetachVolume(args[0], args[1]);
try {
VolumeAttachment volumeAttachment = detachVolume.getVolumeAttachment();
detachVolume.unmountVolume(volumeAttachment);
detachVolume.detachVolume(volumeAttachment);
}
catch (Exception e) {
e.printStackTrace();
}
finally {
detachVolume.close();
}
}
public DetachVolume(String username, String apiKey) {
// The provider configures jclouds To use the Rackspace Cloud (US)
// To use the Rackspace Cloud (UK) set the system property or default value to "rackspace-cloudservers-uk"
String provider = System.getProperty("provider.cs", "rackspace-cloudservers-us");
Iterable<Module> modules = ImmutableSet.<Module> of(new SshjSshClientModule());
ComputeServiceContext context = ContextBuilder.newBuilder(provider)
.credentials(username, apiKey)
.modules(modules)
.buildView(ComputeServiceContext.class);
computeService = context.getComputeService();
novaApi = context.unwrapApi(NovaApi.class);
serverApi = novaApi.getServerApiForZone(ZONE);
volumeAttachmentApi = novaApi.getVolumeAttachmentExtensionForZone(ZONE).get();
cinderApi = ContextBuilder.newBuilder(PROVIDER)
.credentials(username, apiKey)
.buildApi(CinderApi.class);
volumeApi = cinderApi.getVolumeApiForZone(ZONE);
}
/**
* @return Server The Server created in the CreateVolumeAndAttach example
*/
private VolumeAttachment getVolumeAttachment() {
FluentIterable<? extends Server> servers = serverApi.listInDetail().concat();
for (Server server: servers) {
if (server.getName().startsWith(NAME)) {
FluentIterable<? extends VolumeAttachment> attachments = volumeAttachmentApi
.listAttachmentsOnServer(server.getId());
return attachments.iterator().next();
}
}
throw new RuntimeException(NAME + " not found. Run the CreateVolumeAndAttach example first.");
}
/**
* Make sure you've unmounted the volume first. Failure to do so could result in failure or data loss.
*/
private void unmountVolume(VolumeAttachment volumeAttachment) {
System.out.format("Unmount Volume%n");
String script = new ScriptBuilder().addStatement(exec("umount /mnt")).render(OsFamily.UNIX);
RunScriptOptions options = RunScriptOptions.Builder
.overrideLoginUser(ROOT)
.overrideLoginPassword(PASSWORD)
.blockOnComplete(true);
ZoneAndId zoneAndId = ZoneAndId.fromZoneAndId(ZONE, volumeAttachment.getServerId());
ExecResponse response = computeService.runScriptOnNode(zoneAndId.slashEncode(), script, options);
if (response.getExitStatus() == 0) {
System.out.format(" Exit Status: %s%n", response.getExitStatus());
}
else {
System.out.format(" Error: %s%n",response.getOutput());
}
}
private void detachVolume(VolumeAttachment volumeAttachment) throws TimeoutException {
System.out.format("Detach Volume%n");
boolean result = volumeAttachmentApi
.detachVolumeFromServer(volumeAttachment.getVolumeId(), volumeAttachment.getServerId());
// Wait for the volume to become Attached (aka In Use) before moving on
// If you want to know what's happening during the polling, enable
// logging. See /jclouds-example/rackspace/src/main/java/org/jclouds/examples/rackspace/Logging.java
if (!VolumePredicates.awaitAvailable(volumeApi).apply(Volume.forId(volumeAttachment.getVolumeId()))) {
throw new TimeoutException("Timeout on volume: " + volumeAttachment.getVolumeId());
}
System.out.format(" %s%n", result);
}
/**
* 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 void close() throws IOException {
Closeables.close(cinderApi, true);
Closeables.close(computeService.getContext(), true);
}
}