| 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.config; |
| 20 | |
| 21 | import static com.google.common.collect.Iterables.toArray; |
| 22 | import static org.jclouds.Constants.PROPERTY_SESSION_INTERVAL; |
| 23 | import static org.jclouds.ec2.reference.EC2Constants.PROPERTY_EC2_AMI_OWNERS; |
| 24 | |
| 25 | import java.util.Set; |
| 26 | import java.util.concurrent.ExecutionException; |
| 27 | import java.util.concurrent.atomic.AtomicReference; |
| 28 | |
| 29 | import javax.inject.Named; |
| 30 | import javax.inject.Singleton; |
| 31 | |
| 32 | import org.jclouds.compute.ComputeServiceContext; |
| 33 | import org.jclouds.compute.config.BaseComputeServiceContextModule; |
| 34 | import org.jclouds.compute.domain.Image; |
| 35 | import org.jclouds.concurrent.RetryOnTimeOutExceptionSupplier; |
| 36 | import org.jclouds.ec2.compute.EC2ComputeService; |
| 37 | import org.jclouds.ec2.compute.domain.RegionAndName; |
| 38 | import org.jclouds.ec2.compute.loaders.RegionAndIdToImage; |
| 39 | import org.jclouds.ec2.compute.suppliers.RegionAndNameToImageSupplier; |
| 40 | import org.jclouds.rest.AuthorizationException; |
| 41 | import org.jclouds.rest.suppliers.SetAndThrowAuthorizationExceptionSupplier; |
| 42 | |
| 43 | import com.google.common.base.Splitter; |
| 44 | import com.google.common.base.Supplier; |
| 45 | import com.google.common.base.Suppliers; |
| 46 | import com.google.common.base.Throwables; |
| 47 | import com.google.common.cache.CacheLoader; |
| 48 | import com.google.common.cache.LoadingCache; |
| 49 | import com.google.common.collect.ImmutableSet; |
| 50 | import com.google.inject.Injector; |
| 51 | import com.google.inject.Key; |
| 52 | import com.google.inject.Provides; |
| 53 | import com.google.inject.TypeLiteral; |
| 54 | import com.google.inject.name.Names; |
| 55 | |
| 56 | /** |
| 57 | * Configures the {@link ComputeServiceContext}; requires {@link EC2ComputeService} bound. |
| 58 | * |
| 59 | * @author Adrian Cole |
| 60 | */ |
| 61 | public class EC2ComputeServiceContextModule extends BaseComputeServiceContextModule { |
| 62 | @Override |
| 63 | protected void configure() { |
| 64 | installDependencies(); |
| 65 | install(new EC2BindComputeStrategiesByClass()); |
| 66 | install(new EC2BindComputeSuppliersByClass()); |
| 67 | super.configure(); |
| 68 | } |
| 69 | |
| 70 | protected void installDependencies(){ |
| 71 | install(new EC2ComputeServiceDependenciesModule()); |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | protected boolean shouldEagerlyParseImages(Injector injector) { |
| 76 | // If no owners to query, then will never lookup all images |
| 77 | String[] amiOwners = injector.getInstance(Key.get(String[].class, Names.named(PROPERTY_EC2_AMI_OWNERS))); |
| 78 | return (amiOwners.length > 0); |
| 79 | } |
| 80 | |
| 81 | @Override |
| 82 | protected Supplier<Set<? extends Image>> supplyNonParsingImageCache( |
| 83 | AtomicReference<AuthorizationException> authException, @Named(PROPERTY_SESSION_INTERVAL) long seconds, |
| 84 | final Supplier<Set<? extends Image>> imageSupplier, Injector injector) { |
| 85 | final Supplier<LoadingCache<RegionAndName, ? extends Image>> cache = injector.getInstance(Key.get(new TypeLiteral<Supplier<LoadingCache<RegionAndName, ? extends Image>>>() {})); |
| 86 | return new Supplier<Set<? extends Image>>() { |
| 87 | @Override |
| 88 | public Set<? extends Image> get() { |
| 89 | return ImmutableSet.copyOf(cache.get().asMap().values()); |
| 90 | } |
| 91 | }; |
| 92 | } |
| 93 | |
| 94 | @Provides |
| 95 | @Singleton |
| 96 | protected Supplier<LoadingCache<RegionAndName, ? extends Image>> provideRegionAndNameToImageSupplierCache( |
| 97 | final RegionAndNameToImageSupplier supplier) { |
| 98 | return supplier; |
| 99 | } |
| 100 | |
| 101 | @Provides |
| 102 | @Singleton |
| 103 | protected Supplier<CacheLoader<RegionAndName, Image>> provideRegionAndNameToImageSupplierCacheLoader( |
| 104 | final RegionAndIdToImage delegate) { |
| 105 | return Suppliers.<CacheLoader<RegionAndName, Image>>ofInstance(new CacheLoader<RegionAndName, Image>() { |
| 106 | private final AtomicReference<AuthorizationException> authException = new AtomicReference<AuthorizationException>(); |
| 107 | |
| 108 | @Override |
| 109 | public Image load(final RegionAndName key) throws Exception { |
| 110 | // raw lookup of an image |
| 111 | Supplier<Image> rawSupplier = new Supplier<Image>() { |
| 112 | @Override public Image get() { |
| 113 | try { |
| 114 | return delegate.load(key); |
| 115 | } catch (ExecutionException e) { |
| 116 | throw Throwables.propagate(e); |
| 117 | } |
| 118 | } |
| 119 | }; |
| 120 | |
| 121 | // wrap in retry logic |
| 122 | Supplier<Image> retryingSupplier = new RetryOnTimeOutExceptionSupplier<Image>( |
| 123 | new SetAndThrowAuthorizationExceptionSupplier<Image>(rawSupplier, authException)); |
| 124 | |
| 125 | return retryingSupplier.get(); |
| 126 | } |
| 127 | |
| 128 | }); |
| 129 | } |
| 130 | |
| 131 | @Provides |
| 132 | @Singleton |
| 133 | @Named(PROPERTY_EC2_AMI_OWNERS) |
| 134 | String[] amiOwners(@Named(PROPERTY_EC2_AMI_OWNERS) String amiOwners) { |
| 135 | if (amiOwners.trim().equals("")) |
| 136 | return new String[] {}; |
| 137 | return toArray(Splitter.on(',').split(amiOwners), String.class); |
| 138 | } |
| 139 | |
| 140 | } |
| 141 | |