001: /* ====================================================================
002: * The Jcorporate Apache Style Software License, Version 1.2 05-07-2002
003: *
004: * Copyright (c) 1995-2002 Jcorporate Ltd. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * 3. The end-user documentation included with the redistribution,
019: * if any, must include the following acknowledgment:
020: * "This product includes software developed by Jcorporate Ltd.
021: * (http://www.jcorporate.com/)."
022: * Alternately, this acknowledgment may appear in the software itself,
023: * if and wherever such third-party acknowledgments normally appear.
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033: * written permission of Jcorporate Ltd.
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063: */
064:
065: package com.jcorporate.expresso.core.db.tests;
066:
067: import com.jcorporate.expresso.core.db.DBConnection;
068: import com.jcorporate.expresso.core.db.DBConnectionPool;
069: import com.jcorporate.expresso.core.db.DBException;
070: import com.jcorporate.expresso.core.db.exception.PoolFullException;
071: import com.jcorporate.expresso.services.test.TestSystemInitializer;
072:
073: /**
074: * Unit test to stress the DBConnectionPool
075: *
076: * @author Michael Rimov
077: * @version $Revision: 1.2 $ on $Date: 2004/11/17 20:48:22 $
078: */
079:
080: public class DBConnectionPoolStressThread extends java.lang.Thread {
081: protected String errorMessage = null;
082: int numPoolFulls = 0;
083:
084: public DBConnectionPoolStressThread() {
085: }
086:
087: public DBConnectionPoolStressThread(String threadName) {
088: super (threadName);
089: }
090:
091: public String getErrors() {
092: return errorMessage;
093: }
094:
095: public int getNumPoolFulls() {
096: return numPoolFulls;
097: }
098:
099: public void run() {
100: try {
101: DBConnectionPool myPool = DBConnectionPool
102: .getInstance(TestSystemInitializer.getTestContext());
103: /**@todo Override this java.lang.Thread method*/
104: for (int i = 0; i < DBConnectionPoolTest.NUM_ITERATIONS; i++) {
105: if (!this .isInterrupted()) {
106: try {
107: DBConnection oneConnection = myPool
108: .getConnection();
109: if (oneConnection == null) {
110: errorMessage = "Received null connection from the connection pool.";
111: }
112: synchronized (this ) {
113: try {
114: sleep(new java.util.Random()
115: .nextInt(50));
116: } catch (InterruptedException ex) {
117: }
118: }
119: oneConnection.release();
120: // myPool.release(oneConnection);
121: } catch (PoolFullException pfe) {
122: numPoolFulls++;
123: //We're ok, that's what we're trying to stress here.
124: }
125: } else {
126: numPoolFulls++;
127: break;
128: }
129: }
130: } catch (DBException ex) {
131: ex.printStackTrace();
132: errorMessage = ex.getMessage();
133: return;
134: }
135: }
136: }
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