package org.apache.commons.jcs.auxiliary.disk.indexed;
   
   /*
    * 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.Map;
  
  import junit.framework.Test;
  import junit.framework.TestCase;
  import junit.framework.TestSuite;
  
  /**
   * This ensures that the jcs version of the LRU map is as fast as the commons
   * version. It has been testing at .6 to .7 times the commons LRU.
   * <p>
   * @author aaronsm
   *
   */
  public class LRUMapSizeVsCount
      extends TestCase
  {
      /** The put put ration after the test */
      double ratioPut = 0;
  
      /** The ratio after the test */
      double ratioGet = 0;
  
      /** put size / count  ratio */
      float targetPut = 1.2f;
  
      /** get size / count ratio */
      float targetGet = 1.2f;
  
      /** Time to loop */
      int loops = 20;
  
      /** items to put and get per loop */
      int tries = 100000;
  
      /**
       * @param testName
       */
      public LRUMapSizeVsCount( String testName )
      {
          super( testName );
      }
  
      /**
       * A unit test suite for JUnit
       * <p>
       * @return The test suite
       */
      public static Test suite()
      {
          return new TestSuite( LRUMapSizeVsCount.class );
      }
  
      /**
       * A unit test for JUnit
       *
       * @throws Exception
       *                Description of the Exception
       */
      public void testSimpleLoad()
          throws Exception
      {
          doWork();
          assertTrue( this.ratioPut < targetPut );
          assertTrue( this.ratioGet < targetGet );
      }
  
      /**
       *
       */
      public void doWork()
      {
          long start = 0;
          long end = 0;
          long time = 0;
          float tPer = 0;
  
          long putTotalCount = 0;
          long getTotalCount = 0;
         long putTotalSize = 0;
         long getTotalSize = 0;
 
         long minTimeSizePut = Long.MAX_VALUE;
         long minTimeSizeGet = Long.MAX_VALUE;
         long minTimeCountPut = Long.MAX_VALUE;
         long minTimeCountGet = Long.MAX_VALUE;
 
         String cacheName = "LRUMap";
         String cache2Name = "";
 
         try
         {
         	IndexedDiskCacheAttributes cattr = new IndexedDiskCacheAttributes();
         	cattr.setName("junit");
         	cattr.setCacheName("junit");
         	cattr.setDiskPath(".");
         	IndexedDiskCache<String, String> idc = new IndexedDiskCache<String, String>(cattr);
 
 			Map<String, IndexedDiskElementDescriptor> cacheCount = idc.new LRUMapCountLimited( tries );
 			Map<String, IndexedDiskElementDescriptor> cacheSize = idc.new LRUMapSizeLimited( tries/1024/2 );
 
             for ( int j = 0; j < loops; j++ )
             {
                 cacheName = "LRU Count           ";
                 start = System.currentTimeMillis();
                 for ( int i = 0; i < tries; i++ )
                 {
                     cacheCount.put( "key:" + i,  new IndexedDiskElementDescriptor(i, i) );
                 }
                 end = System.currentTimeMillis();
                 time = end - start;
                 putTotalCount += time;
                 minTimeCountPut = Math.min(time, minTimeCountPut);
                 tPer = Float.intBitsToFloat( (int) time ) / Float.intBitsToFloat( tries );
                 System.out.println( cacheName + " put time for " + tries + " = " + time + "; millis per = " + tPer );
 
                 start = System.currentTimeMillis();
                 for ( int i = 0; i < tries; i++ )
                 {
                     cacheCount.get( "key:" + i );
                 }
                 end = System.currentTimeMillis();
                 time = end - start;
                 getTotalCount += time;
                 minTimeCountGet = Math.min(minTimeCountGet, time);
                 tPer = Float.intBitsToFloat( (int) time ) / Float.intBitsToFloat( tries );
                 System.out.println( cacheName + " get time for " + tries + " = " + time + "; millis per = " + tPer );
 
                 ///////////////////////////////////////////////////////////////
                 cache2Name = "LRU Size            ";
                 //or LRUMapJCS
                 //cache2Name = "Hashtable";
                 //Hashtable cache2 = new Hashtable();
                 start = System.currentTimeMillis();
                 for ( int i = 0; i < tries; i++ )
                 {
                     cacheSize.put( "key:" + i, new IndexedDiskElementDescriptor(i, i) );
                 }
                 end = System.currentTimeMillis();
                 time = end - start;
                 putTotalSize += time;
                 minTimeSizePut = Math.min(minTimeSizePut, time);
 
                 tPer = Float.intBitsToFloat( (int) time ) / Float.intBitsToFloat( tries );
                 System.out.println( cache2Name + " put time for " + tries + " = " + time + "; millis per = " + tPer );
 
                 start = System.currentTimeMillis();
                 for ( int i = 0; i < tries; i++ )
                 {
                     cacheSize.get( "key:" + i );
                 }
                 end = System.currentTimeMillis();
                 time = end - start;
                 getTotalSize += time;
                 minTimeSizeGet = Math.min(minTimeSizeGet, time);
 
                 tPer = Float.intBitsToFloat( (int) time ) / Float.intBitsToFloat( tries );
                 System.out.println( cache2Name + " get time for " + tries + " = " + time + "; millis per = " + tPer );
 
                 System.out.println( "\n" );
             }
         }
         catch ( Exception e )
         {
             e.printStackTrace( System.out );
             System.out.println( e );
         }
 
         long putAvCount = putTotalCount / loops;
         long getAvCount = getTotalCount / loops;
         long putAvSize = putTotalSize / loops;
         long getAvSize = getTotalSize / loops;
 
         System.out.println( "Finished " + loops + " loops of " + tries + " gets and puts" );
 
         System.out.println( "\n" );
         System.out.println( "Put average for " + cacheName +  " = " + putAvCount );
         System.out.println( "Put average for " + cache2Name + " = " + putAvSize );
         ratioPut = (putAvSize *1.0) / putAvCount;
         System.out.println( cache2Name.trim() + " puts took " + ratioPut + " times the " + cacheName.trim() + ", the goal is <" + targetPut
             + "x" );
 
         System.out.println( "\n" );
         System.out.println( "Put minimum for " + cacheName +  " = " + minTimeCountPut );
         System.out.println( "Put minimum for " + cache2Name + " = " + minTimeSizePut );
         ratioPut = (minTimeSizePut * 1.0) / minTimeCountPut;
         System.out.println( cache2Name.trim() + " puts took " + ratioPut + " times the " + cacheName.trim() + ", the goal is <" + targetPut
             + "x" );
 
         System.out.println( "\n" );
         System.out.println( "Get average for " + cacheName + " = " + getAvCount );
         System.out.println( "Get average for " + cache2Name + " = " + getAvSize );
         ratioGet = Float.intBitsToFloat( (int) getAvCount ) / Float.intBitsToFloat( (int) getAvSize );
         ratioGet = (getAvSize * 1.0) / getAvCount;
         System.out.println( cache2Name.trim() + " gets took " + ratioGet + " times the " + cacheName.trim() + ", the goal is <" + targetGet
             + "x" );
 
         System.out.println( "\n" );
         System.out.println( "Get minimum for " + cacheName +  " = " + minTimeCountGet );
         System.out.println( "Get minimum for " + cache2Name + " = " + minTimeSizeGet );
         ratioPut = (minTimeSizeGet * 1.0) / minTimeCountGet;
         System.out.println( cache2Name.trim() + " puts took " + ratioPut + " times the " + cacheName.trim() + ", the goal is <" + targetGet
             + "x" );
 
     }
 
     /**
      * @param args
      */
     public static void main( String args[] )
     {
     	LRUMapSizeVsCount test = new LRUMapSizeVsCount( "command" );
         test.doWork();
     }
 
 }