/* ============================================================
* JRobin : Pure java implementation of RRDTool's functionality
* ============================================================
*
* Project Info: http://www.jrobin.org
* Project Lead: Sasa Markovic (saxon@jrobin.org);
*
* (C) Copyright 2003-2005, by Sasa Markovic.
*
* Developers: Sasa Markovic (saxon@jrobin.org)
*
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package net.bull.javamelody;
import java.io.IOException;
import org.jrobin.core.RrdBackend;
import org.jrobin.core.RrdFileBackendFactory;
/**
* Factory class which creates actual {@link RrdNioBackend} objects. This is the default factory since
* 1.4.0 version
*/
public class RrdNioBackendFactory extends RrdFileBackendFactory {
/**
* factory name, "NIO-JavaMelody".
*/
public static final String FACTORY_NAME = "NIO-JavaMelody";
/**
* Period in seconds between consecutive synchronizations when
* sync-mode is set to SYNC_BACKGROUND. By default in-memory cache will be
* transferred to the disc every 300 seconds (5 minutes). Default value can be
* changed via {@link #setSyncPeriod(int)} method.
*/
public static final int DEFAULT_SYNC_PERIOD = 300; // seconds
private static int syncPeriod = DEFAULT_SYNC_PERIOD;
/**
* Returns time between two consecutive background synchronizations. If not changed via
* {@link #setSyncPeriod(int)} method call, defaults to {@link #DEFAULT_SYNC_PERIOD}.
* See {@link #setSyncPeriod(int)} for more information.
*
* @return Time in seconds between consecutive background synchronizations.
*/
public static int getSyncPeriod() {
return syncPeriod;
}
/**
* Sets time between consecutive background synchronizations.
*
* @param syncPeriod Time in seconds between consecutive background synchronizations.
*/
public static void setSyncPeriod(int syncPeriod) {
RrdNioBackendFactory.syncPeriod = syncPeriod;
}
/**
* Creates RrdNioBackend object for the given file path.
*
* @param path File path
* @param readOnly True, if the file should be accessed in read/only mode.
* False otherwise.
* @return RrdNioBackend object which handles all I/O operations for the given file path
* @throws IOException Thrown in case of I/O error.
*/
@Override
protected RrdBackend open(String path, boolean readOnly) throws IOException {
return new RrdNioBackend(path, readOnly, syncPeriod);
}
/**
* Returns the name of this factory.
*
* @return Factory name (equals to string "NIO-JavaMelody")
*/
@Override
public String getFactoryName() {
return FACTORY_NAME;
}
}