| /** |
| * 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.rackspace.cloudloadbalancers.functions; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.base.Preconditions.checkState; |
| |
| import java.util.Map; |
| |
| import javax.inject.Inject; |
| |
| import org.jclouds.http.HttpRequest; |
| import org.jclouds.http.HttpResponse; |
| import org.jclouds.http.functions.ParseJson; |
| import org.jclouds.rackspace.cloudloadbalancers.domain.LoadBalancer; |
| import org.jclouds.rackspace.cloudloadbalancers.functions.ConvertLB.Factory; |
| import org.jclouds.rest.InvocationContext; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.Iterables; |
| |
| /** |
| * @author Adrian Cole |
| */ |
| public class ParseLoadBalancer implements Function<HttpResponse, LoadBalancer>, InvocationContext<ParseLoadBalancer> { |
| |
| private final ParseJson<Map<String, LB>> json; |
| private final Factory factory; |
| |
| private ConvertLB convertLB; |
| |
| @Inject |
| ParseLoadBalancer(ParseJson<Map<String, LB>> json, ConvertLB.Factory factory) { |
| this.json = checkNotNull(json, "json"); |
| this.factory = checkNotNull(factory, "factory"); |
| } |
| |
| @Override |
| public LoadBalancer apply(HttpResponse arg0) { |
| checkState(convertLB != null, "convertLB should be set by InvocationContext"); |
| Map<String, LB> map = json.apply(arg0); |
| if (map == null || map.size() == 0) |
| return null; |
| LB lb = Iterables.get(map.values(), 0); |
| return convertLB.apply(lb); |
| } |
| |
| @Override |
| public ParseLoadBalancer setContext(HttpRequest request) { |
| return setRegion(request.getEndpoint().getHost().substring(0, request.getEndpoint().getHost().indexOf('.'))); |
| } |
| |
| ParseLoadBalancer setRegion(String region) { |
| this.convertLB = factory.createForRegion(region); |
| return this; |
| } |
| |
| } |