| /* |
| * 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.googlecomputeengine.compute.loaders; |
| |
| import javax.annotation.Resource; |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| import java.net.URI; |
| import java.util.concurrent.ExecutionException; |
| |
| import com.google.common.base.Optional; |
| import com.google.common.cache.CacheLoader; |
| import org.jclouds.googlecomputeengine.compute.functions.Resources; |
| import org.jclouds.googlecomputeengine.domain.Disk; |
| import org.jclouds.googlecomputeengine.domain.Image; |
| import org.jclouds.logging.Logger; |
| |
| |
| @Singleton |
| public class DiskURIToImage extends CacheLoader<URI, Optional<Image>> { |
| @Resource |
| protected Logger logger = Logger.NULL; |
| |
| private final Resources resources; |
| |
| @Inject |
| DiskURIToImage(Resources resources) { |
| this.resources = resources; |
| } |
| |
| @Override |
| public Optional<Image> load(URI key) throws ExecutionException { |
| try { |
| Image image = null; |
| Disk disk = resources.disk(key); |
| if (disk != null && disk.sourceImage() != null) { |
| image = resources.image(disk.sourceImage()); |
| } |
| return Optional.fromNullable(image); |
| } catch (Exception e) { |
| throw new ExecutionException(message(key, e), e); |
| } |
| } |
| |
| public static String message(URI key, Exception e) { |
| return String.format("could not find image for disk %s: %s", key.toString(), e.getMessage()); |
| } |
| } |