| /** |
| * 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.keystone.v1_1.suppliers; |
| |
| import static com.google.common.collect.Iterables.tryFind; |
| |
| import java.util.NoSuchElementException; |
| |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| |
| import org.jclouds.location.suppliers.ImplicitRegionIdSupplier; |
| import org.jclouds.openstack.keystone.v1_1.domain.Auth; |
| import org.jclouds.openstack.keystone.v1_1.domain.Endpoint; |
| import org.jclouds.openstack.keystone.v1_1.functions.EndpointToRegion; |
| |
| import com.google.common.base.Optional; |
| import com.google.common.base.Predicate; |
| import com.google.common.base.Supplier; |
| import com.google.common.collect.Iterables; |
| import com.google.inject.assistedinject.Assisted; |
| |
| @Singleton |
| public class V1DefaultRegionIdSupplier implements ImplicitRegionIdSupplier { |
| |
| public static interface Factory { |
| /** |
| * |
| * @param apiType |
| * type of the api, according to the provider. ex. {@code compute} |
| * {@code object-store} |
| * @return region id |
| * @throws NoSuchElementException |
| * if the {@code apiType} is not present in the catalog |
| */ |
| ImplicitRegionIdSupplier createForApiType(@Assisted("apiType") String apiType) throws NoSuchElementException; |
| } |
| |
| private final Supplier<Auth> auth; |
| private final EndpointToRegion endpointToRegion; |
| private final String apiType; |
| |
| @Inject |
| public V1DefaultRegionIdSupplier(Supplier<Auth> auth, EndpointToRegion endpointToRegion, |
| @Assisted("apiType") String apiType) { |
| this.auth = auth; |
| this.endpointToRegion = endpointToRegion; |
| this.apiType = apiType; |
| } |
| |
| /** |
| * returns {@link Endpoint#isV1Default()} or first endpoint for service |
| */ |
| @Override |
| public String get() { |
| Auth authResponse = auth.get(); |
| Iterable<Endpoint> endpointsForService = authResponse.getServiceCatalog().get(apiType); |
| Optional<Endpoint> defaultEndpoint = tryFind(endpointsForService, new Predicate<Endpoint>() { |
| @Override |
| public boolean apply(Endpoint in) { |
| return in.isV1Default(); |
| } |
| }); |
| return endpointToRegion.apply(defaultEndpoint.or(Iterables.get(endpointsForService, 0))); |
| } |
| |
| @Override |
| public String toString() { |
| return "defaultRegionIdFor(" + apiType + ")"; |
| } |
| } |