/*
* This file is part of FFMQ.
*
* FFMQ 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 2 of the License, or
* (at your option) any later version.
*
* FFMQ 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 FFMQ; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package net.timewalker.ffmq3.client;
import java.io.InputStream;
import java.util.Properties;
import javax.jms.JMSException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import net.timewalker.ffmq3.FFMQClientSettings;
import net.timewalker.ffmq3.FFMQCoreSettings;
import net.timewalker.ffmq3.transport.PacketTransportException;
import net.timewalker.ffmq3.transport.tcp.nio.NIOTcpMultiplexer;
import net.timewalker.ffmq3.utils.Settings;
import net.timewalker.ffmq3.utils.async.AsyncTaskManager;
/**
* <p>Holds global settings and managers shared among all clients in a given JVM.</p>
*/
public final class ClientEnvironment
{
private static final Log log = LogFactory.getLog(ClientEnvironment.class);
public static final String SETTINGS_FILE_NAME = "ffmq3.properties";
// Global vars
private static NIOTcpMultiplexer multiplexer;
private static AsyncTaskManager asyncTaskManager;
private static Settings settings;
/**
* Get the singleton instance
*/
public static Settings getSettings()
{
if (settings == null)
settings = loadSettings();
return settings;
}
private static synchronized Settings loadSettings()
{
Properties settings = new Properties();
try
{
// Load default settings first
InputStream defaultIn =
FFMQClientSettings.class.getClassLoader().getResourceAsStream(
"net/timewalker/ffmq3/" + SETTINGS_FILE_NAME);
if (defaultIn != null)
{
settings.load(defaultIn);
defaultIn.close();
}
// Load settings in classpath
InputStream userIn = FFMQClientSettings.class.getClassLoader().getResourceAsStream(
SETTINGS_FILE_NAME);
if (userIn != null)
{
settings.load(userIn);
userIn.close();
}
}
catch (Exception e)
{
log.error("Cannot load settings", e);
}
return new Settings(settings);
}
/**
* Get the multiplexer singleton instance
* @return the multiplexer singleton instance
*/
public static synchronized NIOTcpMultiplexer getMultiplexer() throws PacketTransportException
{
if (multiplexer == null)
multiplexer = new NIOTcpMultiplexer(getSettings(),true);
return multiplexer;
}
/**
* Get the async. task manager singleton instance
* @return the manager instance
* @throws JMSException
*/
public static synchronized AsyncTaskManager getAsyncTaskManager() throws JMSException
{
if (asyncTaskManager == null)
{
int threadPoolMinSize = getSettings().getIntProperty(FFMQCoreSettings.ASYNC_TASK_MANAGER_DELIVERY_THREAD_POOL_MINSIZE,0);
int threadPoolMaxIdle = getSettings().getIntProperty(FFMQCoreSettings.ASYNC_TASK_MANAGER_DELIVERY_THREAD_POOL_MAXIDLE,5);
int threadPoolMaxSize = getSettings().getIntProperty(FFMQCoreSettings.ASYNC_TASK_MANAGER_DELIVERY_THREAD_POOL_MAXSIZE,10);
asyncTaskManager = new AsyncTaskManager("AsyncTaskManager-client-delivery-",
threadPoolMinSize,
threadPoolMaxIdle,
threadPoolMaxSize);
}
return asyncTaskManager;
}
/**
* Constructor (private)
*/
private ClientEnvironment()
{
super();
}
}