/*
* 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.openstack.nova.v2_0.compute.extensions;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
import static com.google.common.collect.Iterables.find;
import static org.jclouds.compute.config.ComputeServiceProperties.TIMEOUT_IMAGE_AVAILABLE;
import static org.jclouds.location.predicates.LocationPredicates.idEquals;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.concurrent.atomic.AtomicReference;
import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;
import org.jclouds.Constants;
import org.jclouds.collect.Memoized;
import org.jclouds.compute.domain.CloneImageTemplate;
import org.jclouds.compute.domain.Image;
import org.jclouds.compute.domain.ImageBuilder;
import org.jclouds.compute.domain.ImageTemplate;
import org.jclouds.compute.domain.ImageTemplateBuilder;
import org.jclouds.compute.domain.OperatingSystem;
import org.jclouds.compute.extensions.ImageExtension;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.domain.Location;
import org.jclouds.logging.Logger;
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.zonescoped.ZoneAndId;
import com.google.common.base.Predicate;
import com.google.common.base.Supplier;
import com.google.common.util.concurrent.Atomics;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.UncheckedTimeoutException;
/**
* Nova implementation of {@link ImageExtension}
*
* @author David Alves
*
*/
@Singleton
public class NovaImageExtension implements ImageExtension {
@Resource
@Named(ComputeServiceConstants.COMPUTE_LOGGER)
protected Logger logger = Logger.NULL;
private final NovaApi novaApi;
private final ListeningExecutorService userExecutor;
private final Supplier<Set<? extends Location>> locations;
private final Predicate<AtomicReference<Image>> imageAvailablePredicate;
@Inject
public NovaImageExtension(NovaApi novaApi, @Named(Constants.PROPERTY_USER_THREADS) ListeningExecutorService userExecutor,
@Memoized Supplier<Set<? extends Location>> locations,
@Named(TIMEOUT_IMAGE_AVAILABLE) Predicate<AtomicReference<Image>> imageAvailablePredicate) {
this.novaApi = checkNotNull(novaApi, "novaApi");
this.userExecutor = checkNotNull(userExecutor, "userExecutor");
this.locations = checkNotNull(locations, "locations");
this.imageAvailablePredicate = checkNotNull(imageAvailablePredicate, "imageAvailablePredicate");
}
@Override
public ImageTemplate buildImageTemplateFromNode(String name, final String id) {
ZoneAndId zoneAndId = ZoneAndId.fromSlashEncoded(id);
Server server = novaApi.getServerApiForZone(zoneAndId.getZone()).get(zoneAndId.getId());
if (server == null)
throw new NoSuchElementException("Cannot find server with id: " + zoneAndId);
CloneImageTemplate template = new ImageTemplateBuilder.CloneImageTemplateBuilder().nodeId(id).name(name).build();
return template;
}
@Override
public ListenableFuture<Image> createImage(ImageTemplate template) {
checkState(template instanceof CloneImageTemplate,
" openstack-nova only supports creating images through cloning.");
CloneImageTemplate cloneTemplate = (CloneImageTemplate) template;
ZoneAndId sourceImageZoneAndId = ZoneAndId.fromSlashEncoded(cloneTemplate.getSourceNodeId());
String newImageId = novaApi.getServerApiForZone(sourceImageZoneAndId.getZone()).createImageFromServer(
cloneTemplate.getName(), sourceImageZoneAndId.getId());
final ZoneAndId targetImageZoneAndId = ZoneAndId.fromZoneAndId(sourceImageZoneAndId.getZone(), newImageId);
logger.info(">> Registered new Image %s, waiting for it to become available.", newImageId);
final AtomicReference<Image> image = Atomics.newReference(new ImageBuilder()
.location(find(locations.get(), idEquals(targetImageZoneAndId.getZone())))
.id(targetImageZoneAndId.slashEncode())
.providerId(targetImageZoneAndId.getId())
.description(cloneTemplate.getName())
.operatingSystem(OperatingSystem.builder().description(cloneTemplate.getName()).build())
.status(Image.Status.PENDING).build());
return userExecutor.submit(new Callable<Image>() {
@Override
public Image call() throws Exception {
if (imageAvailablePredicate.apply(image))
return image.get();
// TODO: get rid of the expectation that the image will be available, as it is very brittle
throw new UncheckedTimeoutException("Image was not created within the time limit: " + image.get());
}
});
}
@Override
public boolean deleteImage(String id) {
ZoneAndId zoneAndId = ZoneAndId.fromSlashEncoded(id);
try {
this.novaApi.getImageApiForZone(zoneAndId.getZone()).delete(zoneAndId.getId());
} catch (Exception e) {
return false;
}
return true;
}
}