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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 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.apache.whirr;
This class is used to create ClusterController instances.

Implementation note. ClusterController implementations are discovered using a Service Provider Interface (SPI), described in java.util.ServiceLoader.

public class ClusterControllerFactory {

Create an instance of a ClusterController according to the given name. If the name is null then the default ClusterController is returned.
  public ClusterController create(String serviceName) {
    if (serviceName == null) {
      return new ClusterController();
    for (ClusterController controller : ) {
      if (controller.getName().equals(serviceName)) {
        return controller;
    return null;

Return a collection of available ClusterController names.

the available service names
  public Set<StringavailableServices() {
    Set<Stringresult = Sets.newLinkedHashSet();
    for (ClusterController s : ) {
    return result;
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