package org.apache.helix;
   
   /*
    * 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.
   */
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.TreeMap;
  
  import org.apache.helix.model.IdealState;
  import org.apache.helix.tools.IdealStateCalculatorForEspressoRelay;
  import org.testng.Assert;
  import org.testng.annotations.Test;
  
  
  public class TestRelayIdealStateCalculator
  {
    @Test ()
    public void testEspressoStorageClusterIdealState() throws Exception
    {
      testEspressoStorageClusterIdealState(15, 9, 3);
      testEspressoStorageClusterIdealState(15, 6, 3);
      testEspressoStorageClusterIdealState(15, 6, 2);
      testEspressoStorageClusterIdealState(6,  4, 2);
    }
    public void testEspressoStorageClusterIdealState(int partitions, int nodes, int replica) throws Exception
    {
      List<String> storageNodes = new ArrayList<String>();
      for(int i = 0;i < partitions; i++)
      {
        storageNodes.add("localhost:123" + i);
      }
      
      List<String> relays = new ArrayList<String>();
      for(int i = 0;i < nodes; i++)
      {
        relays.add("relay:123" + i);
      }
      
      IdealState idealstate = IdealStateCalculatorForEspressoRelay.calculateRelayIdealState(storageNodes, relays, "TEST", replica, "Leader", "Standby", "LeaderStandby");
      
      Assert.assertEquals(idealstate.getRecord().getListFields().size(), idealstate.getRecord().getMapFields().size());
      
      Map<String, Integer> countMap = new TreeMap<String, Integer>();
      for(String key  : idealstate.getRecord().getListFields().keySet())
      {
        Assert.assertEquals(idealstate.getRecord().getListFields().get(key).size(), idealstate.getRecord().getMapFields().get(key).size());
        List<String> list = idealstate.getRecord().getListFields().get(key);
        Map<String, String> map = idealstate.getRecord().getMapFields().get(key);
        Assert.assertEquals(list.size(), replica);
        for(String val : list)
        {
          if(!countMap.containsKey(val))
          {
            countMap.put(val, 1);
          }
          else
          {
            countMap.put(val, countMap.get(val) + 1);
          }
          Assert.assertTrue(map.containsKey(val));
        }
      }
      for(String nodeName : countMap.keySet())
      {
        Assert.assertTrue(countMap.get(nodeName) <= partitions * replica / nodes + 1);
        //System.out.println(nodeName + " " + countMap.get(nodeName));
      }
      System.out.println();
    }
  }