| /* |
| * 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.rackspace.cloudfiles.v1.functions; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkState; |
| |
| import java.net.URI; |
| import java.util.Map; |
| |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| |
| import org.jclouds.javax.annotation.Nullable; |
| import org.jclouds.location.suppliers.RegionIdToURISupplier; |
| import org.jclouds.rackspace.cloudidentity.v2_0.ServiceType; |
| import org.jclouds.rest.annotations.ApiVersion; |
| |
| import com.google.common.base.Function; |
| import com.google.common.base.Supplier; |
| |
| /** |
| * This class ensures that the correct Cloud Files CDN endpoint is retrieved from the endpoint |
| * supplier. The CDN API should never be instantiated directly, but rather accessed through the |
| * {@link CloudFilesApi#cdnApiInRegion(String)} API. |
| * <p/> |
| * <h3>NOTE</h3> |
| * The Cloud Files Service Type will always default to OpenStack Object Storage ("object-storage"). |
| * <p/> |
| * |
| * |
| * @see CloudFilesApi#cdnApiInRegion(String) |
| * @see CDNApi |
| * @see RegionToEndpoint |
| * @see org.jclouds.openstack.v2_0.ServiceType#OBJECT_STORE |
| * @see org.jclouds.rackspace.cloudidentity.v2_0.ServiceType#OBJECT_CDN |
| * @see <a |
| * href="http://docs.rackspace.com/files/api/v1/cf-devguide/content/Service-Access-Endpoints-d1e003.html"> |
| * Service Access Endpoints</a> |
| */ |
| @Singleton |
| public class RegionToCDNEndpoint implements Function<Object, URI> { |
| |
| private final Supplier<Map<String, Supplier<URI>>> endpointsSupplier; |
| |
| @Inject |
| public RegionToCDNEndpoint(@ApiVersion final String apiVersion, final RegionIdToURISupplier.Factory factory) { |
| this.endpointsSupplier = factory.createForApiTypeAndVersion(ServiceType.OBJECT_CDN, apiVersion); |
| } |
| |
| public URI apply(@Nullable Object from) { |
| checkArgument(from != null && from instanceof String, "you must specify a region, as a String argument"); |
| Map<String, Supplier<URI>> regionToEndpoint = endpointsSupplier.get(); |
| checkState(regionToEndpoint.size() > 0, "no region name to endpoint mappings configured!"); |
| checkArgument(regionToEndpoint.containsKey(from), |
| "requested location %s, which is not in the configured locations: %s", from, regionToEndpoint); |
| return regionToEndpoint.get(from).get(); |
| } |
| } |