/*
 * 
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */ 
 
package org.apache.struts.sql;

import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class PoolingDriverTest {
   public static void main(String[] args) throws Exception {
      String name = null;
      String query = null;
      String bindvalue = null;
      int numThreads = 7;
      int delay = 1000;
      switch(args.length) {
         case 5:
            delay = Integer.parseInt(args[4]);
         case 4:
            numThreads = Integer.parseInt(args[3]);
         case 3:
            bindvalue = args[2];
            query = args[1];
            name = args[0];
            break;
         default:
            System.out.println("args: <connect-string> <query> <bindvalue> [<numthreads>] [<delay>]");
            System.out.println(" where:");
            System.out.println("  <connect-string> is the JDBC URI");
            System.out.println("  <query> is a SQL query parameterized by a single '?'");
            System.out.println("  <bindvalue> is the value to bind to the '?' as a String");
            System.out.println("  <numthreads> is the number of threads to run");
            System.out.println("  <delay> is the max number of milliseconds that each");
            System.out.println("          thread should wait before borrowing and returning");
            System.out.println("          a connection");
            return;      
      }
      for(int i=0;i<numThreads;i++) {
         Thread t = new Thread(new PoolingDriverTestThread(name,query,bindvalue,i,delay));
         t.start();
      }
   }
}

class PoolingDriverTestThread implements Runnable {
   String _connstr = null;
   String _query = null;
   String _bindvalue = null;
   int _id = -1;
   int _delay = 1000;
   java.util.Random _random = new java.util.Random();

   PoolingDriverTestThread(String connstr, String query, String bindvalue, int id, int delay) {
      _connstr = connstr;
      _query = query;
      _bindvalue = bindvalue;
      _id = id;
      _delay = delay;
   }

   public void run() {
      int loops = 0;
      long start = System.currentTimeMillis();
      for(;;) {
         Connection conn = null;
         PreparedStatement stmt = null;
         ResultSet rset = null;
         try {
            conn = DriverManager.getConnection(_connstr);
            try {
               Thread.sleep((long)(_random.nextInt(_delay)));
            } catch(Exception e) {
            }
            stmt = conn.prepareStatement(_query);
            stmt.setString(1,_bindvalue);
            rset = stmt.executeQuery();
            if(!rset.next()) {
               System.err.println("ERROR: QUERY RETURNED ZERO ROWS");
            }
            loops++;
         } catch(Exception e) {
            System.err.println("Exception in thread " + _id + ":");
            e.printStackTrace();
         } finally {
            try {
               rset.close();
            } catch(Exception e) {
            }
            try {
               stmt.close();
            } catch(Exception e) {
            }
            try {
               conn.close();
            } catch(Exception e) {
            }
         }
         try {
            Thread.sleep((long)(_random.nextInt(_delay)));
         } catch(Exception e) {
         }
         if(loops%10 == 0) {
            System.out.println("Thread " + _id + " has completed " + loops + " loops. [" + String.valueOf(System.currentTimeMillis() - start) + "]");
            start = System.currentTimeMillis();
         }
      }
   }
}