content: /*
   * 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.apache.ambari.server.topology.addservice;
  
  import static java.util.stream.Collectors.toList;
  
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * Encapsulates information from layout recommendation that can be used or reused for config recommendation.
   */
  public class LayoutRecommendationInfo {
    private final Map<String, Set<String>> hostGroups;
    private final Map<String, Map<String, Set<String>>> allServiceComponentHosts;
  
    public LayoutRecommendationInfo(Map<String, Set<String>> hostGroups, Map<String, Map<String, Set<String>>> allServiceComponentHosts) {
      this.hostGroups = hostGroups;
      this.allServiceComponentHosts = allServiceComponentHosts;
    }
  
    public Map<String, Set<String>> getHostGroups() {
      return hostGroups;
    }
  
    public Map<String, Map<String, Set<String>>> getAllServiceLayouts() {
      return allServiceComponentHosts;
    }
  
    public List<String> getHosts() {
      return getHostsFromHostGroups(hostGroups);
    }
  
    public static List<String> getHostsFromHostGroups(Map<String, Set<String>> hostGroups) {
      return hostGroups.values().stream().flatMap(Set::stream).collect(toList());
    }
  }
  