/*
* 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 static com.google.common.collect.Iterables.getOnlyElement;
import java.util.NoSuchElementException;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.jclouds.aws.util.AWSUtils;
import org.jclouds.compute.strategy.GetImageStrategy;
import org.jclouds.ec2.EC2Client;
import org.jclouds.ec2.domain.Image;
import org.jclouds.ec2.options.DescribeImagesOptions;
import com.google.common.base.Function;
/**
*
* @author Adrian Cole
*/
@Singleton
public class EC2GetImageStrategy implements GetImageStrategy {
private final EC2Client client;
private final Function<Image, org.jclouds.compute.domain.Image> imageToImage;
@Inject
protected EC2GetImageStrategy(EC2Client client, Function<Image, org.jclouds.compute.domain.Image> imageToImage) {
this.client = checkNotNull(client, "client");
this.imageToImage = checkNotNull(imageToImage, "imageToImage");
}
@Override
public org.jclouds.compute.domain.Image getImage(String id) {
checkNotNull(id, "id");
String[] parts = AWSUtils.parseHandle(id);
String region = parts[0];
String instanceId = parts[1];
try {
Image image = getImageInRegion(region, instanceId);
return imageToImage.apply(image);
} catch (NoSuchElementException e) {
return null;
}
}
public Image getImageInRegion(String region, String id) {
return getOnlyElement(client.getAMIServices().describeImagesInRegion(region,
DescribeImagesOptions.Builder.imageIds(id)));
}
}