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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.elb.loadbalancer.strategy;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.collect.Iterables.concat;
import static com.google.common.collect.Iterables.transform;
import static org.jclouds.concurrent.FutureIterables.transformParallel;

Author(s):
Adrian Cole
   @Resource
   protected Logger logger = .;
   private final ELBClient client;
   private final ELBAsyncClient aclient;
   private final ExecutorService executor;
   private final Supplier<Set<String>> regions;
   @Inject
   protected ELBListLoadBalancersStrategy(ELBClient clientELBAsyncClient aclient,
            Function<LoadBalancerLoadBalancerMetadataconverter,
            @Named(.ExecutorService executor, @Region Supplier<Set<String>> regions) {
      this. = checkNotNull(client"client");
      this. = checkNotNull(aclient"aclient");
      this. = checkNotNull(regions"regions");
      this. = checkNotNull(converter"converter");
      this. = checkNotNull(executor"executor");
   }
   @Override
      Iterable<? extends LoadBalancerloadBalancers;
      Set<Stringregions = this..get();
      if (regions.size() > 0)
         loadBalancers = concat(transformParallel(regionsnew Function<StringFuture<? extends Set<? extends LoadBalancer>>>() {
            @Override
            public ListenableFuture<? extends Set<? extends LoadBalancer>> apply(String from) {
               return .describeLoadBalancersInRegion(from);
            }
         }, null"loadbalancers"));
      else
         loadBalancers = .describeLoadBalancersInRegion(null);
      return transform(loadBalancers);
   }
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