org.alfresco.repo.transaction.ConnectionPoolOverloadTest.java Source code

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Here is the source code for org.alfresco.repo.transaction.ConnectionPoolOverloadTest.java

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/*
 * #%L
 * Alfresco Repository
 * %%
 * Copyright (C) 2005 - 2016 Alfresco Software Limited
 * %%
 * This file is part of the Alfresco software. 
 * If the software was purchased under a paid Alfresco license, the terms of 
 * the paid license agreement will prevail.  Otherwise, the software is 
 * provided under the following open source license terms:
 * 
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */
package org.alfresco.repo.transaction;

import static org.junit.Assert.*;

import java.util.LinkedList;
import java.util.List;
import java.util.Properties;

import javax.transaction.UserTransaction;

import org.alfresco.service.transaction.TransactionService;
import org.alfresco.util.ApplicationContextHelper;
import org.alfresco.util.PropertyCheck;
import org.alfresco.util.transaction.ConnectionPoolException;
import org.apache.commons.lang.mutable.MutableInt;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;

import com.sun.star.auth.InvalidArgumentException;

/**
 * A test designed to catch ConnectionPoolException
 * 
 * @author alex.mukha
 * @since 4.1.9
 */

public class ConnectionPoolOverloadTest {
    private static Log logger = LogFactory.getLog(ConnectionPoolOverloadTest.class);
    private static ApplicationContext ctx = ApplicationContextHelper.getApplicationContext();

    private static MutableInt failCount;

    private TransactionService transactionService;
    private Properties properties;

    private int dbPoolMax;
    private int dbPoolWaitMax;

    @Before
    public void setUp() throws Exception {
        failCount = new MutableInt(0);
        transactionService = ctx.getBean("transactionComponent", TransactionService.class);
        properties = ctx.getBean("global-properties", Properties.class);

        String dbPoolMaxProp = properties.getProperty("db.pool.max");
        if (PropertyCheck.isValidPropertyString(dbPoolMaxProp)) {
            dbPoolMax = Integer.parseInt(dbPoolMaxProp);
        } else {
            throw new InvalidArgumentException("The db.pool.max property is not valid.");
        }

        String dbPoolWaitMaxProp = properties.getProperty("db.pool.wait.max");
        if (PropertyCheck.isValidPropertyString(dbPoolWaitMaxProp)) {
            dbPoolWaitMax = Integer.parseInt(dbPoolWaitMaxProp);
        } else {
            throw new InvalidArgumentException("The db.pool.wait.max property is not valid.");
        }

        dbPoolWaitMax = dbPoolWaitMax == -1 ? 100 : dbPoolWaitMax;
    }

    @Test
    public void testOverload() throws Exception {
        List<Thread> threads = new LinkedList<Thread>();
        int numThreads = dbPoolMax + 1;
        int i = 0;
        try {
            for (i = 0; i < numThreads; i++) {
                Thread thread = new TxnThread("Thread-" + i);
                thread.start();
                threads.add(thread);
            }
        } finally {
            try {
                for (Thread thread : threads) {
                    if (thread != null) {
                        try {
                            thread.join(dbPoolWaitMax);
                        } catch (Exception e) {
                            fail("The " + thread.getName() + " failed to join.");
                        }
                    }
                }
            } finally {
                for (Thread thread : threads) {
                    if (thread != null) {
                        thread.interrupt();
                    }
                }
            }
            assertTrue("The number of failed threads should not be 0.", failCount.intValue() > 0);
            assertTrue(
                    "The number of open transactions should not be more that the db pool maximum."
                            + "(Maybe a configuration of DB connection limit is less then db.pool.max)"
                            + " db.pool.max is " + dbPoolMax + ", number of threads is " + numThreads
                            + ", number of failed threads is" + failCount.intValue(),
                    dbPoolMax >= numThreads - failCount.intValue());
        }
    }

    private class TxnThread extends Thread {
        private ThreadLocal<UserTransaction> txnTL = new ThreadLocal<UserTransaction>();

        public TxnThread(String name) {
            super(name);
            this.setDaemon(true);
        }

        @Override
        public void run() {
            if (logger.isDebugEnabled()) {
                logger.debug("Start " + this.getName());
            }
            UserTransaction txn = transactionService.getUserTransaction();
            txnTL.set(txn);
            try {
                txn.begin();
            } catch (ConnectionPoolException e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("The " + this.getName() + " failed with ConnectionPoolException.");
                }
                failCount.increment();
                interrupt();
            } catch (Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("The " + this.getName() + " failed with not expected exception.");
                }
                e.printStackTrace();
                failCount.increment();
                interrupt();
                fail("Thread should fail with ConnectionPoolException.");
            }

            try {
                sleep(dbPoolWaitMax * 2);
            } catch (InterruptedException e) {
                interrupt();
            }
            interrupt();
        }

        @Override
        public void interrupt() {
            if (txnTL.get() != null) {
                try {
                    txnTL.get().rollback();
                } catch (Exception e) {
                }
            }
            super.interrupt();
        }
    }
}