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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * Licensed 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.internal;

import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import com.gemstone.gemfire.Statistics;
import com.gemstone.gemfire.StatisticsType;

import junit.framework.TestCase;

/**
 * Integration TestCase for StatSampler.
 * 
 * @author Kirk Lund
 * @since 7.0
 */
public abstract class StatSamplerTestCase extends TestCase {

  public StatSamplerTestCase(String name) {
    super(name);
  }
  
  protected abstract StatisticsManager getStatisticsManager();

  protected int getStatListModCount() {
    return getStatisticsManager().getStatListModCount();
  }

  protected List getStatsList() {
    return getStatisticsManager().getStatsList();
  }
  
  protected static class AllStatistics {
  
    private final HostStatSampler statSampler;
    private final Map> allStatistics;
    
    protected AllStatistics(HostStatSampler statSampler) throws InterruptedException {
      this.statSampler = statSampler;
      this.allStatistics = initAllStatistics();
    }
    
    private Map> initAllStatistics() throws InterruptedException {
      assertTrue(this.statSampler.waitForInitialization(5000));
  
      Map> statsTypeToStats = new HashMap>(); 
      Statistics[] stats = this.statSampler.getStatistics();
      for (int i = 0; i < stats.length; i++) {
        StatisticsType statsType = stats[i].getType();
        Set statsSet = statsTypeToStats.get(statsType);
        if (statsSet == null) {
          statsSet = new HashSet();
          statsSet.add(stats[i]);
          statsTypeToStats.put(statsType, statsSet);
        } else {
          statsSet.add(stats[i]);
        }
      }
      return statsTypeToStats;
    }
    
    protected boolean containsStatisticsType(StatisticsType type) {
      throw new UnsupportedOperationException("TODO");
    }
    
    protected boolean containsStatisticsType(String typeName) throws InterruptedException {
      for (StatisticsType statType : this.allStatistics.keySet()) {
        if (statType.getName().equals(typeName)) {
          return true;
        }
      }
      return false;
    }
  
    protected boolean containsStatistics(Statistics statistics) {
      throw new UnsupportedOperationException("TODO");
    }
    
    protected boolean containsStatistics(String instanceName) throws InterruptedException {
      for (StatisticsType statType : this.allStatistics.keySet()) {
        for (Statistics statistics : this.allStatistics.get(statType)) {
          if (statistics.getTextId().equals(instanceName)) {
            return true;
          }
        }
      }
      return false;
    }
  
    /**
     * Statistics[0]: typeName=StatSampler instanceName=statSampler
     * Statistics[1]: typeName=VMStats instanceName=vmStats
     * Statistics[2]: typeName=VMMemoryUsageStats instanceName=vmHeapMemoryStats
     * Statistics[3]: typeName=VMMemoryUsageStats instanceName=vmNonHeapMemoryStats
     * Statistics[4]: typeName=VMMemoryPoolStats instanceName=Code Cache-Non-heap memory
     * Statistics[5]: typeName=VMMemoryPoolStats instanceName=PS Eden Space-Heap memory
     * Statistics[6]: typeName=VMMemoryPoolStats instanceName=PS Survivor Space-Heap memory
     * Statistics[7]: typeName=VMMemoryPoolStats instanceName=PS Old Gen-Heap memory
     * Statistics[8]: typeName=VMMemoryPoolStats instanceName=PS Perm Gen-Non-heap memory
     * Statistics[9]: typeName=VMGCStats instanceName=PS Scavenge
     * Statistics[10]: typeName=VMGCStats instanceName=PS MarkSweep
     * Statistics[11]: typeName=LinuxSystemStats instanceName=kuwait.gemstone.com
     * Statistics[12]: typeName=LinuxProcessStats instanceName=javaApp0-proc
     */
    protected void dumpStatistics() throws InterruptedException {
      Statistics[] stats = this.statSampler.getStatistics();
      for (int i = 0; i < stats.length; i++) {
        System.out.println("Statistics["+i+"]: typeName=" + stats[i].getType().getName()
            + " instanceName=" + stats[i].getTextId());
      }
    }
  }
}