/*
* 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.functions;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.concurrent.ExecutionException;
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.domain.NodeMetadataBuilder;
import org.jclouds.ec2.compute.domain.RegionAndName;
import com.google.common.base.Function;
import com.google.common.base.Throwables;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.ImmutableSet;
/**
* This class searches for elastic ip addresses that are associated with the node, and adds them to
* the publicIpAddress collection if present.
*
* @author Adrian Cole
*/
@Singleton
public class AddElasticIpsToNodemetadata implements Function<NodeMetadata, NodeMetadata> {
private final LoadingCache<RegionAndName, String> cache;
@Inject
protected AddElasticIpsToNodemetadata(@Named("ELASTICIP") LoadingCache<RegionAndName, String> cache) {
this.cache = checkNotNull(cache, "cache");
}
// Note: Instances only have one Internet routable IP address. When an Elastic IP is associated to an
// instance, the instance's existing Public IP address mapping is removed and is no longer valid for this instance
// http://aws.amazon.com/articles/1346
// TODO can there be multiple elastic ips on one instance?
@Override
public NodeMetadata apply(NodeMetadata arg0) {
String[] parts = AWSUtils.parseHandle(arg0.getId());
String region = parts[0];
String instanceId = parts[1];
try {
String publicIp = cache.get(new RegionAndName(region, instanceId));
// Replace existing public addresses with elastic IP (see note above)
return NodeMetadataBuilder.fromNodeMetadata(arg0)
.publicAddresses(ImmutableSet.<String> builder().add(publicIp).build()).build();
} catch (CacheLoader.InvalidCacheLoadException e) {
// no ip was found
return arg0;
} catch (ExecutionException e) {
throw Throwables.propagate(e);
}
}
}