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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas;
  
  import org.apache.commons.lang.StringUtils;
  
  import java.util.Arrays;
  import java.util.List;
  
  import static com.google.common.base.Preconditions.checkArgument;
  
  public class AtlasServerEnsemble {
      private final String[] urls;
  
      public AtlasServerEnsemble(String[] baseUrls) {
          checkArgument((baseUrls != null && baseUrls.length > 0), "List of baseURLs cannot be null or empty.");
  
          for (String baseUrl : baseUrls) {
              checkArgument(StringUtils.isNotEmpty(baseUrl), "Base URL cannot be null or empty.");
          }
  
          urls = baseUrls;
      }
  
      public boolean hasSingleInstance() {
          return urls.length == 1;
      }
  
      public String firstURL() {
          return urls[0];
      }
  
      public List<String> getMembers() {
          return Arrays.asList(urls);
      }
  }
  