/**
* Copyright (c) 2012, Andy Janata
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of conditions
* and the following disclaimer.
* * 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS 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 COPYRIGHT HOLDER OR
* 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.
*/
package net.socialgamer.cah;
import java.io.File;
import java.io.FileReader;
import java.util.Date;
import java.util.Properties;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import org.apache.log4j.PropertyConfigurator;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.servlet.GuiceServletContextListener;
/**
* Class with things that need to be done when the servlet context is created and destroyed. Creates
* and stores a Guice injector, stores the time the server was started, and creates a thread to
* check for any clients which have stopped responding.
*
* @author Andy Janata (ajanata@socialgamer.net)
*/
public class StartupUtils extends GuiceServletContextListener {
/**
* Context attribute key name for the Guice injector.
*/
public static final String INJECTOR = "injector";
/**
* Delay before the disconnected client timer is started when the server starts, in milliseconds.
*/
private static final long PING_START_DELAY = 60 * 1000;
/**
* Delay between invocations of the disconnected client timer, in milliseconds.
*/
private static final long PING_CHECK_DELAY = 5 * 1000;
/**
* Context attribute key name for the time the server was started.
*/
public static final String DATE_NAME = "started_at";
/**
* Context attribute key name for whether verbose request and response logging is enabled.
*/
public static final String VERBOSE_DEBUG = "verbose_debug";
/**
* The time the server was started.
*/
private Date serverStarted;
@Override
public void contextDestroyed(final ServletContextEvent contextEvent) {
final ServletContext context = contextEvent.getServletContext();
final Injector injector = (Injector) context.getAttribute(INJECTOR);
final ScheduledThreadPoolExecutor timer = injector
.getInstance(ScheduledThreadPoolExecutor.class);
timer.shutdownNow();
context.removeAttribute(INJECTOR);
context.removeAttribute(DATE_NAME);
super.contextDestroyed(contextEvent);
}
@Override
public void contextInitialized(final ServletContextEvent contextEvent) {
final ServletContext context = contextEvent.getServletContext();
final Injector injector = getInjector();
final UserPing ping = injector.getInstance(UserPing.class);
final ScheduledThreadPoolExecutor timer = injector
.getInstance(ScheduledThreadPoolExecutor.class);
timer.scheduleAtFixedRate(ping, PING_START_DELAY, PING_CHECK_DELAY, TimeUnit.MILLISECONDS);
serverStarted = new Date();
context.setAttribute(INJECTOR, injector);
context.setAttribute(DATE_NAME, serverStarted);
reconfigureLogging(contextEvent.getServletContext());
reloadProperties(contextEvent.getServletContext());
}
public static void reloadProperties(final ServletContext context) {
final Injector injector = (Injector) context.getAttribute(INJECTOR);
final Properties props = injector.getInstance(Properties.class);
final File propsFile = new File(context.getRealPath("/WEB-INF/pyx.properties"));
try {
props.clear();
props.load(new FileReader(propsFile));
} catch (final Exception e) {
// we should probably do something?
e.printStackTrace();
}
}
public static void reconfigureLogging(final ServletContext context) {
PropertyConfigurator.configure(context.getRealPath(
"/WEB-INF/log4j.properties"));
}
@Override
protected Injector getInjector() {
return Guice.createInjector(new CahModule());
}
}