org.davidmendoza.fileUpload.utils.ContextFinalizer.java Source code

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Here is the source code for org.davidmendoza.fileUpload.utils.ContextFinalizer.java

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/*
 * The MIT License
 *
 * Copyright 2012 Southwestern Adventist University.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.davidmendoza.fileUpload.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.stereotype.Component;

import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Enumeration;
import java.util.Set;

@Component
public class ContextFinalizer implements ApplicationListener<ContextClosedEvent> {

    private static final Logger log = LoggerFactory.getLogger(ContextFinalizer.class);

    @Override
    public void onApplicationEvent(ContextClosedEvent e) {
        log.info("Stopping connections");
        Enumeration<Driver> drivers = DriverManager.getDrivers();
        Driver d = null;
        while (drivers.hasMoreElements()) {
            try {
                d = drivers.nextElement();
                DriverManager.deregisterDriver(d);
                log.warn(String.format("Driver %s deregistered", d));
            } catch (SQLException ex) {
                log.warn(String.format("Error deregistering driver %s", d), ex);
            }
        }
        Set<Thread> threadSet = Thread.getAllStackTraces().keySet();
        Thread[] threadArray = threadSet.toArray(new Thread[threadSet.size()]);
        for (Thread t : threadArray) {
            if (t.getName().contains("Abandoned connection cleanup thread")) {
                synchronized (t) {
                    t.stop(); //don't complain, it works
                }
            }
        }
        log.info("Finished stopping connections");
    }
}