/*
* 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.ec2.compute.strategy;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.concurrent.ExecutionException;
import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;
import org.jclouds.aws.util.AWSUtils;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.reference.ComputeServiceConstants;
import org.jclouds.compute.strategy.DestroyNodeStrategy;
import org.jclouds.compute.strategy.GetNodeMetadataStrategy;
import org.jclouds.ec2.EC2Client;
import org.jclouds.ec2.compute.domain.RegionAndName;
import org.jclouds.ec2.reference.EC2Constants;
import org.jclouds.logging.Logger;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
/**
*
* @author Adrian Cole
*/
@Singleton
public class EC2DestroyNodeStrategy implements DestroyNodeStrategy {
@Resource
@Named(ComputeServiceConstants.COMPUTE_LOGGER)
protected Logger logger = Logger.NULL;
protected final EC2Client client;
protected final GetNodeMetadataStrategy getNode;
protected final LoadingCache<RegionAndName, String> elasticIpCache;
@Inject
@Named(EC2Constants.PROPERTY_EC2_AUTO_ALLOCATE_ELASTIC_IPS)
@VisibleForTesting
boolean autoAllocateElasticIps = false;
@Inject
protected EC2DestroyNodeStrategy(EC2Client client, GetNodeMetadataStrategy getNode,
@Named("ELASTICIP") LoadingCache<RegionAndName, String> elasticIpCache) {
this.client = checkNotNull(client, "client");
this.getNode = checkNotNull(getNode, "getNode");
this.elasticIpCache = checkNotNull(elasticIpCache, "elasticIpCache");
}
@Override
public NodeMetadata destroyNode(String id) {
String[] parts = AWSUtils.parseHandle(id);
String region = parts[0];
String instanceId = parts[1];
// TODO: can there be multiple?
releaseAnyPublicIpForInstanceInRegion(instanceId, region);
destroyInstanceInRegion(instanceId, region);
return getNode.getNode(id);
}
protected void releaseAnyPublicIpForInstanceInRegion(String instanceId, String region) {
if (!autoAllocateElasticIps)
return;
try {
String ip = elasticIpCache.get(new RegionAndName(region, instanceId));
logger.debug(">> disassociating elastic IP %s", ip);
client.getElasticIPAddressServices().disassociateAddressInRegion(region, ip);
logger.trace("<< disassociated elastic IP %s", ip);
elasticIpCache.invalidate(new RegionAndName(region, instanceId));
logger.debug(">> releasing elastic IP %s", ip);
client.getElasticIPAddressServices().releaseAddressInRegion(region, ip);
logger.trace("<< released elastic IP %s", ip);
} catch (CacheLoader.InvalidCacheLoadException e) {
// no ip was found
return;
} catch (ExecutionException e) {
// don't propagate as we need to clean up the node regardless
logger.warn(e, "error cleaning up elastic ip for instance %s/%s", region, instanceId);
}
}
protected void destroyInstanceInRegion(String instanceId, String region) {
client.getInstanceServices().terminateInstancesInRegion(region, instanceId);
}
}