apis/openstack-nova/src/main/java/org/jclouds/openstack/nova/v2_0/config/NovaRestClientModule.java

/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds 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.openstack.nova.v2_0.config;

import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import javax.inject.Provider;
import javax.inject.Singleton;

import org.jclouds.http.HttpErrorHandler;
import org.jclouds.http.annotation.ClientError;
import org.jclouds.http.annotation.Redirection;
import org.jclouds.http.annotation.ServerError;
import org.jclouds.openstack.nova.v2_0.NovaAsyncApi;
import org.jclouds.openstack.nova.v2_0.NovaApi;
import org.jclouds.openstack.nova.v2_0.domain.Extension;
import org.jclouds.openstack.nova.v2_0.extensions.AdminActionsAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.AdminActionsApi;
import org.jclouds.openstack.nova.v2_0.extensions.FlavorExtraSpecsAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.FlavorExtraSpecsApi;
import org.jclouds.openstack.nova.v2_0.extensions.FloatingIPAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.FloatingIPApi;
import org.jclouds.openstack.nova.v2_0.extensions.HostAdministrationAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.HostAdministrationApi;
import org.jclouds.openstack.nova.v2_0.extensions.HostAggregateAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.HostAggregateApi;
import org.jclouds.openstack.nova.v2_0.extensions.KeyPairAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.KeyPairApi;
import org.jclouds.openstack.nova.v2_0.extensions.QuotaAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.QuotaClassAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.QuotaClassApi;
import org.jclouds.openstack.nova.v2_0.extensions.QuotaApi;
import org.jclouds.openstack.nova.v2_0.extensions.SecurityGroupAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.SecurityGroupApi;
import org.jclouds.openstack.nova.v2_0.extensions.ServerWithSecurityGroupsAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.ServerWithSecurityGroupsApi;
import org.jclouds.openstack.nova.v2_0.extensions.SimpleTenantUsageAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.SimpleTenantUsageApi;
import org.jclouds.openstack.nova.v2_0.extensions.VirtualInterfaceAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.VirtualInterfaceApi;
import org.jclouds.openstack.nova.v2_0.extensions.VolumeAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.VolumeApi;
import org.jclouds.openstack.nova.v2_0.extensions.VolumeTypeAsyncApi;
import org.jclouds.openstack.nova.v2_0.extensions.VolumeTypeApi;
import org.jclouds.openstack.nova.v2_0.features.ExtensionAsyncApi;
import org.jclouds.openstack.nova.v2_0.features.ExtensionApi;
import org.jclouds.openstack.nova.v2_0.features.FlavorAsyncApi;
import org.jclouds.openstack.nova.v2_0.features.FlavorApi;
import org.jclouds.openstack.nova.v2_0.features.ImageAsyncApi;
import org.jclouds.openstack.nova.v2_0.features.ImageApi;
import org.jclouds.openstack.nova.v2_0.features.ServerAsyncApi;
import org.jclouds.openstack.nova.v2_0.features.ServerApi;
import org.jclouds.openstack.nova.v2_0.functions.PresentWhenExtensionAnnotationNamespaceEqualsAnyNamespaceInExtensionsSet;
import org.jclouds.openstack.nova.v2_0.handlers.NovaErrorHandler;
import org.jclouds.rest.ConfiguresRestClient;
import org.jclouds.rest.config.RestClientModule;
import org.jclouds.rest.functions.ImplicitOptionalConverter;

import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.ImmutableMap;
import com.google.inject.Provides;

/**
 * Configures the Nova connection.
 * 
 * @author Adrian Cole
 */
@ConfiguresRestClient
public class NovaRestClientModule extends RestClientModule<NovaApi, NovaAsyncApi> {

   public static final Map<Class<?>, Class<?>> DELEGATE_MAP = ImmutableMap.<Class<?>, Class<?>> builder()
         .put(ServerApi.class, ServerAsyncApi.class).put(FlavorApi.class, FlavorAsyncApi.class)
         .put(ImageApi.class, ImageAsyncApi.class).put(ExtensionApi.class, ExtensionAsyncApi.class)
         .put(FloatingIPApi.class, FloatingIPAsyncApi.class)
         .put(SecurityGroupApi.class, SecurityGroupAsyncApi.class)
         .put(KeyPairApi.class, KeyPairAsyncApi.class)
         .put(HostAdministrationApi.class, HostAdministrationAsyncApi.class)
         .put(SimpleTenantUsageApi.class, SimpleTenantUsageAsyncApi.class)
         .put(VolumeApi.class, VolumeAsyncApi.class)
         .put(VirtualInterfaceApi.class, VirtualInterfaceAsyncApi.class)
         .put(ServerWithSecurityGroupsApi.class, ServerWithSecurityGroupsAsyncApi.class)
         .put(AdminActionsApi.class, AdminActionsAsyncApi.class)
         .put(HostAggregateApi.class, HostAggregateAsyncApi.class)
         .put(FlavorExtraSpecsApi.class, FlavorExtraSpecsAsyncApi.class)
         .put(QuotaApi.class, QuotaAsyncApi.class)
         .put(QuotaClassApi.class, QuotaClassAsyncApi.class)
         .put(VolumeTypeApi.class, VolumeTypeAsyncApi.class)
         .build();

   public NovaRestClientModule() {
      super(DELEGATE_MAP);
   }

   @Override
   protected void configure() {
      install(new NovaParserModule());
      bind(ImplicitOptionalConverter.class).to(
            PresentWhenExtensionAnnotationNamespaceEqualsAnyNamespaceInExtensionsSet.class);
      super.configure();
   }

   @Provides
   @Singleton
   public LoadingCache<String, Set<Extension>> provideExtensionsByZone(final Provider<NovaApi> novaApi) {
      return CacheBuilder.newBuilder().expireAfterWrite(23, TimeUnit.HOURS)
            .build(new CacheLoader<String, Set<Extension>>() {

               @Override
               public Set<Extension> load(String key) throws Exception {
                  return novaApi.get().getExtensionApiForZone(key).listExtensions();
               }

            });
   }

   @Override
   protected void bindErrorHandlers() {
      bind(HttpErrorHandler.class).annotatedWith(Redirection.class).to(NovaErrorHandler.class);
      bind(HttpErrorHandler.class).annotatedWith(ClientError.class).to(NovaErrorHandler.class);
      bind(HttpErrorHandler.class).annotatedWith(ServerError.class).to(NovaErrorHandler.class);
   }
}