/*
* 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.openstack.keystone.v2_0.config;
import static org.jclouds.util.Suppliers2.getLastValueInMap;
import java.net.URI;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.concurrent.TimeUnit;
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.location.Provider;
import org.jclouds.openstack.keystone.v2_0.KeystoneApi;
import org.jclouds.openstack.keystone.v2_0.handlers.KeystoneErrorHandler;
import org.jclouds.openstack.keystone.v2_0.suppliers.RegionIdToAdminURIFromAccessForTypeAndVersion;
import org.jclouds.openstack.keystone.v2_0.suppliers.RegionIdToAdminURISupplier;
import org.jclouds.openstack.v2_0.ServiceType;
import org.jclouds.openstack.v2_0.domain.Extension;
import org.jclouds.openstack.v2_0.functions.PresentWhenExtensionAnnotationNamespaceEqualsAnyNamespaceInExtensionsSet;
import org.jclouds.openstack.v2_0.services.Identity;
import org.jclouds.rest.ConfiguresHttpApi;
import org.jclouds.rest.annotations.ApiVersion;
import org.jclouds.rest.config.HttpApiModule;
import org.jclouds.rest.functions.ImplicitOptionalConverter;
import org.jclouds.util.Suppliers2;
import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.Multimap;
import com.google.inject.AbstractModule;
import com.google.inject.Provides;
import com.google.inject.assistedinject.FactoryModuleBuilder;
/**
* Configures the Keystone API.
*/
@ConfiguresHttpApi
public class KeystoneHttpApiModule extends HttpApiModule<KeystoneApi> {
public KeystoneHttpApiModule() {
}
public static class KeystoneAdminURLModule extends AbstractModule {
@Override
protected void configure() {
install(new FactoryModuleBuilder().implement(RegionIdToAdminURISupplier.class,
RegionIdToAdminURIFromAccessForTypeAndVersion.class).build(RegionIdToAdminURISupplier.Factory.class));
}
/**
* in some cases, there is no {@link ServiceType#IDENTITY} entry in the service catalog. In
* other cases, there's no adminURL entry present. Fallback to the provider in this case.
*/
@Provides
@Singleton
@Identity
protected Supplier<URI> provideStorageUrl(final RegionIdToAdminURISupplier.Factory factory,
@ApiVersion final String version, @Provider final Supplier<URI> providerURI) {
Supplier<URI> identityServiceForVersion = getLastValueInMap(factory.createForApiTypeAndVersion(
ServiceType.IDENTITY, version));
Supplier<URI> whenIdentityServiceIsntListedFallbackToProviderURI = Suppliers2.onThrowable(
identityServiceForVersion, NoSuchElementException.class, providerURI);
Supplier<URI> whenIdentityServiceHasNoAdminURLFallbackToProviderURI = Suppliers2.or(
whenIdentityServiceIsntListedFallbackToProviderURI, providerURI);
return whenIdentityServiceHasNoAdminURLFallbackToProviderURI;
}
}
@Override
protected void configure() {
bind(ImplicitOptionalConverter.class).to(PresentWhenExtensionAnnotationNamespaceEqualsAnyNamespaceInExtensionsSet.class);
super.configure();
}
@Provides
@Singleton
public Multimap<URI, URI> aliases() {
return ImmutableMultimap.<URI, URI>builder()
.build();
}
@Provides
@Singleton
public LoadingCache<String, Set<? extends Extension>> provideExtensionsByZone(final javax.inject.Provider<KeystoneApi> keystoneApi) {
return CacheBuilder.newBuilder().expireAfterWrite(23, TimeUnit.HOURS)
.build(CacheLoader.from(Suppliers.memoize(new Supplier<Set<? extends Extension>>() {
@Override
public Set<? extends Extension> get() {
return keystoneApi.get().getExtensionApi().list();
}
})));
}
@Override
protected void bindErrorHandlers() {
bind(HttpErrorHandler.class).annotatedWith(Redirection.class).to(KeystoneErrorHandler.class);
bind(HttpErrorHandler.class).annotatedWith(ClientError.class).to(KeystoneErrorHandler.class);
bind(HttpErrorHandler.class).annotatedWith(ServerError.class).to(KeystoneErrorHandler.class);
}
}