| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.ec2.compute.strategy; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | |
| 23 | import java.util.concurrent.ExecutionException; |
| 24 | |
| 25 | import javax.annotation.Resource; |
| 26 | import javax.inject.Inject; |
| 27 | import javax.inject.Named; |
| 28 | import javax.inject.Singleton; |
| 29 | |
| 30 | import org.jclouds.aws.util.AWSUtils; |
| 31 | import org.jclouds.compute.domain.NodeMetadata; |
| 32 | import org.jclouds.compute.reference.ComputeServiceConstants; |
| 33 | import org.jclouds.compute.strategy.DestroyNodeStrategy; |
| 34 | import org.jclouds.compute.strategy.GetNodeMetadataStrategy; |
| 35 | import org.jclouds.ec2.EC2Client; |
| 36 | import org.jclouds.ec2.compute.domain.RegionAndName; |
| 37 | import org.jclouds.ec2.reference.EC2Constants; |
| 38 | import org.jclouds.logging.Logger; |
| 39 | |
| 40 | import com.google.common.annotations.VisibleForTesting; |
| 41 | import com.google.common.cache.CacheLoader; |
| 42 | import com.google.common.cache.LoadingCache; |
| 43 | |
| 44 | /** |
| 45 | * |
| 46 | * @author Adrian Cole |
| 47 | */ |
| 48 | @Singleton |
| 49 | public class EC2DestroyNodeStrategy implements DestroyNodeStrategy { |
| 50 | @Resource |
| 51 | @Named(ComputeServiceConstants.COMPUTE_LOGGER) |
| 52 | protected Logger logger = Logger.NULL; |
| 53 | protected final EC2Client client; |
| 54 | protected final GetNodeMetadataStrategy getNode; |
| 55 | protected final LoadingCache<RegionAndName, String> elasticIpCache; |
| 56 | |
| 57 | @Inject |
| 58 | @Named(EC2Constants.PROPERTY_EC2_AUTO_ALLOCATE_ELASTIC_IPS) |
| 59 | @VisibleForTesting |
| 60 | boolean autoAllocateElasticIps = false; |
| 61 | |
| 62 | @Inject |
| 63 | protected EC2DestroyNodeStrategy(EC2Client client, GetNodeMetadataStrategy getNode, |
| 64 | @Named("ELASTICIP") LoadingCache<RegionAndName, String> elasticIpCache) { |
| 65 | this.client = checkNotNull(client, "client"); |
| 66 | this.getNode = checkNotNull(getNode, "getNode"); |
| 67 | this.elasticIpCache = checkNotNull(elasticIpCache, "elasticIpCache"); |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public NodeMetadata destroyNode(String id) { |
| 72 | String[] parts = AWSUtils.parseHandle(id); |
| 73 | String region = parts[0]; |
| 74 | String instanceId = parts[1]; |
| 75 | |
| 76 | // TODO: can there be multiple? |
| 77 | releaseAnyPublicIpForInstanceInRegion(instanceId, region); |
| 78 | destroyInstanceInRegion(instanceId, region); |
| 79 | return getNode.getNode(id); |
| 80 | } |
| 81 | |
| 82 | protected void releaseAnyPublicIpForInstanceInRegion(String instanceId, String region) { |
| 83 | if (!autoAllocateElasticIps) |
| 84 | return; |
| 85 | try { |
| 86 | String ip = elasticIpCache.get(new RegionAndName(region, instanceId)); |
| 87 | logger.debug(">> disassociating elastic IP %s", ip); |
| 88 | client.getElasticIPAddressServices().disassociateAddressInRegion(region, ip); |
| 89 | logger.trace("<< disassociated elastic IP %s", ip); |
| 90 | elasticIpCache.invalidate(new RegionAndName(region, instanceId)); |
| 91 | logger.debug(">> releasing elastic IP %s", ip); |
| 92 | client.getElasticIPAddressServices().releaseAddressInRegion(region, ip); |
| 93 | logger.trace("<< released elastic IP %s", ip); |
| 94 | } catch (CacheLoader.InvalidCacheLoadException e) { |
| 95 | // no ip was found |
| 96 | return; |
| 97 | } catch (ExecutionException e) { |
| 98 | // don't propagate as we need to clean up the node regardless |
| 99 | logger.warn(e, "error cleaning up elastic ip for instance %s/%s", region, instanceId); |
| 100 | } |
| 101 | |
| 102 | } |
| 103 | |
| 104 | protected void destroyInstanceInRegion(String instanceId, String region) { |
| 105 | client.getInstanceServices().terminateInstancesInRegion(region, instanceId); |
| 106 | } |
| 107 | } |