| 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.rest.config; |
| 20 | |
| 21 | import javax.inject.Named; |
| 22 | import javax.inject.Singleton; |
| 23 | import javax.ws.rs.core.UriBuilder; |
| 24 | |
| 25 | import org.jclouds.functions.IdentityFunction; |
| 26 | import org.jclouds.http.HttpRequest; |
| 27 | import org.jclouds.http.HttpResponse; |
| 28 | import org.jclouds.http.TransformingHttpCommand; |
| 29 | import org.jclouds.http.TransformingHttpCommandExecutorService; |
| 30 | import org.jclouds.http.TransformingHttpCommandImpl; |
| 31 | import org.jclouds.http.functions.config.SaxParserModule; |
| 32 | import org.jclouds.internal.ClassMethodArgs; |
| 33 | import org.jclouds.json.config.GsonModule; |
| 34 | import org.jclouds.rest.AsyncClientFactory; |
| 35 | import org.jclouds.rest.HttpAsyncClient; |
| 36 | import org.jclouds.rest.HttpClient; |
| 37 | import org.jclouds.rest.binders.BindToJsonPayloadWrappedWith; |
| 38 | import org.jclouds.rest.internal.AsyncRestClientProxy; |
| 39 | import org.jclouds.rest.internal.RestAnnotationProcessor; |
| 40 | import org.jclouds.rest.internal.SeedAnnotationCache; |
| 41 | |
| 42 | import com.google.common.base.Function; |
| 43 | import com.google.common.cache.Cache; |
| 44 | import com.google.common.cache.CacheBuilder; |
| 45 | import com.google.common.cache.CacheLoader; |
| 46 | import com.google.common.collect.ImmutableMap; |
| 47 | import com.google.inject.AbstractModule; |
| 48 | import com.google.inject.Inject; |
| 49 | import com.google.inject.Injector; |
| 50 | import com.google.inject.Key; |
| 51 | import com.google.inject.Provides; |
| 52 | import com.google.inject.Scopes; |
| 53 | import com.google.inject.TypeLiteral; |
| 54 | import com.google.inject.assistedinject.FactoryModuleBuilder; |
| 55 | import com.google.inject.name.Names; |
| 56 | import com.google.inject.util.Types; |
| 57 | import com.sun.jersey.api.uri.UriBuilderImpl; |
| 58 | |
| 59 | /** |
| 60 | * |
| 61 | * @author Adrian Cole |
| 62 | */ |
| 63 | public class RestModule extends AbstractModule { |
| 64 | |
| 65 | @Override |
| 66 | protected void configure() { |
| 67 | install(new SaxParserModule()); |
| 68 | install(new GsonModule()); |
| 69 | install(new FactoryModuleBuilder().build(BindToJsonPayloadWrappedWith.Factory.class)); |
| 70 | bind(IdentityFunction.class).toInstance(IdentityFunction.INSTANCE); |
| 71 | bind(UriBuilder.class).to(UriBuilderImpl.class); |
| 72 | bind(AsyncRestClientProxy.Factory.class).to(Factory.class).in(Scopes.SINGLETON); |
| 73 | BinderUtils.bindAsyncClient(binder(), HttpAsyncClient.class); |
| 74 | BinderUtils.bindClient(binder(), HttpClient.class, HttpAsyncClient.class, ImmutableMap.<Class<?>, Class<?>> of( |
| 75 | HttpClient.class, HttpAsyncClient.class)); |
| 76 | } |
| 77 | |
| 78 | @Provides |
| 79 | @Singleton |
| 80 | protected Cache<Class<?>, Boolean> seedAnnotationCache(SeedAnnotationCache seedAnnotationCache) { |
| 81 | return CacheBuilder.newBuilder().build(seedAnnotationCache); |
| 82 | } |
| 83 | |
| 84 | @Provides |
| 85 | @Singleton |
| 86 | @Named("async") |
| 87 | Cache<ClassMethodArgs, Object> provideAsyncDelegateMap(CreateAsyncClientForCaller createAsyncClientForCaller) { |
| 88 | return CacheBuilder.newBuilder().build(createAsyncClientForCaller); |
| 89 | } |
| 90 | |
| 91 | static class CreateAsyncClientForCaller extends CacheLoader<ClassMethodArgs, Object> { |
| 92 | private final Injector injector; |
| 93 | private final AsyncRestClientProxy.Factory factory; |
| 94 | |
| 95 | @Inject |
| 96 | CreateAsyncClientForCaller(Injector injector, AsyncRestClientProxy.Factory factory) { |
| 97 | this.injector = injector; |
| 98 | this.factory = factory; |
| 99 | } |
| 100 | |
| 101 | @SuppressWarnings( { "unchecked", "rawtypes" }) |
| 102 | @Override |
| 103 | public Object load(final ClassMethodArgs from) { |
| 104 | Class clazz = from.getAsyncClass(); |
| 105 | TypeLiteral typeLiteral = TypeLiteral.get(clazz); |
| 106 | RestAnnotationProcessor util = (RestAnnotationProcessor) injector.getInstance(Key.get(TypeLiteral.get(Types |
| 107 | .newParameterizedType(RestAnnotationProcessor.class, clazz)))); |
| 108 | // cannot use child injectors due to the super coarse guice lock on |
| 109 | // Singleton |
| 110 | util.setCaller(from); |
| 111 | Cache<ClassMethodArgs, Object> delegateMap = injector.getInstance(Key.get( |
| 112 | new TypeLiteral<Cache<ClassMethodArgs, Object>>() { |
| 113 | }, Names.named("async"))); |
| 114 | AsyncRestClientProxy proxy = new AsyncRestClientProxy(injector, factory, util, typeLiteral, delegateMap); |
| 115 | injector.injectMembers(proxy); |
| 116 | return AsyncClientFactory.create(clazz, proxy); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | private static class Factory implements AsyncRestClientProxy.Factory { |
| 121 | @Inject |
| 122 | private TransformingHttpCommandExecutorService executorService; |
| 123 | |
| 124 | @SuppressWarnings( { "unchecked", "rawtypes" }) |
| 125 | @Override |
| 126 | public TransformingHttpCommand<?> create(HttpRequest request, Function<HttpResponse, ?> transformer) { |
| 127 | return new TransformingHttpCommandImpl(executorService, request, transformer); |
| 128 | } |
| 129 | |
| 130 | } |
| 131 | |
| 132 | } |