| 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.collect.Iterables.concat; |
| 22 | import static org.jclouds.concurrent.FutureIterables.transformParallel; |
| 23 | |
| 24 | import java.util.Map.Entry; |
| 25 | import java.util.Set; |
| 26 | import java.util.concurrent.ExecutorService; |
| 27 | import java.util.concurrent.Future; |
| 28 | |
| 29 | import javax.annotation.Resource; |
| 30 | import javax.inject.Inject; |
| 31 | import javax.inject.Named; |
| 32 | import javax.inject.Singleton; |
| 33 | |
| 34 | import org.jclouds.Constants; |
| 35 | import org.jclouds.compute.reference.ComputeServiceConstants; |
| 36 | import org.jclouds.ec2.EC2AsyncClient; |
| 37 | import org.jclouds.ec2.options.DescribeImagesOptions; |
| 38 | import org.jclouds.logging.Logger; |
| 39 | |
| 40 | import com.google.common.base.Function; |
| 41 | |
| 42 | /** |
| 43 | * |
| 44 | * @author Adrian Cole |
| 45 | */ |
| 46 | @Singleton |
| 47 | public class DescribeImagesParallel implements |
| 48 | Function<Iterable<Entry<String, DescribeImagesOptions>>, Iterable<? extends org.jclouds.ec2.domain.Image>> { |
| 49 | @Resource |
| 50 | @Named(ComputeServiceConstants.COMPUTE_LOGGER) |
| 51 | protected Logger logger = Logger.NULL; |
| 52 | |
| 53 | protected final EC2AsyncClient async; |
| 54 | final ExecutorService executor; |
| 55 | |
| 56 | @Inject |
| 57 | public DescribeImagesParallel(EC2AsyncClient async, @Named(Constants.PROPERTY_USER_THREADS) ExecutorService executor) { |
| 58 | super(); |
| 59 | this.async = async; |
| 60 | this.executor = executor; |
| 61 | } |
| 62 | |
| 63 | @Override |
| 64 | public Iterable<? extends org.jclouds.ec2.domain.Image> apply( |
| 65 | Iterable<Entry<String, DescribeImagesOptions>> queries) { |
| 66 | return concat(transformParallel( |
| 67 | queries, |
| 68 | new Function<Entry<String, DescribeImagesOptions>, Future<? extends Set<? extends org.jclouds.ec2.domain.Image>>>() { |
| 69 | |
| 70 | @Override |
| 71 | public Future<Set<? extends org.jclouds.ec2.domain.Image>> apply( |
| 72 | Entry<String, DescribeImagesOptions> from) { |
| 73 | return async.getAMIServices().describeImagesInRegion(from.getKey(), from.getValue()); |
| 74 | } |
| 75 | |
| 76 | }, executor, null, logger, "amis")); |
| 77 | } |
| 78 | |
| 79 | } |