org.jclouds.elb.loadbalancer.strategy.ELBGetLoadBalancerMetadataStrategy Maven / Gradle / Ivy

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/*
 * 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.elb.loadbalancer.strategy;

import static com.google.common.base.Preconditions.checkNotNull;
import static org.jclouds.aws.util.AWSUtils.parseHandle;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.elb.ELBApi;
import org.jclouds.elb.domain.LoadBalancer;
import org.jclouds.elb.domain.regionscoped.LoadBalancerInRegion;
import org.jclouds.loadbalancer.domain.LoadBalancerMetadata;
import org.jclouds.loadbalancer.strategy.GetLoadBalancerMetadataStrategy;

import com.google.common.base.Function;

@Singleton
public class ELBGetLoadBalancerMetadataStrategy implements GetLoadBalancerMetadataStrategy {

   private final ELBApi api;
   private final Function converter;

   @Inject
   protected ELBGetLoadBalancerMetadataStrategy(ELBApi api,
            Function converter) {
      this.api = checkNotNull(api, "api");
      this.converter = checkNotNull(converter, "converter");
   }

   @Override
   public LoadBalancerMetadata getLoadBalancer(String id) {
      String[] parts = parseHandle(id);
      String region = parts[0];
      String name = parts[1];
      LoadBalancer input = api.getLoadBalancerApiForRegion(region).get(name);
      return input != null ? converter.apply(new LoadBalancerInRegion(input, region)) : null;
   }

}