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The source code
/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software License
* version 1.1, a copy of which has been included with this distribution in
* the LICENSE.txt file.
*/
package org.apache.log4j.net;
import java.net.Socket;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.BufferedInputStream;
import org.apache.log4j.*;
import org.apache.log4j.spi.*;
// Contributors: Moses Hohman
/**
Read {@link LoggingEvent} objects sent from a remote client using
Sockets (TCP). These logging events are logged according to local
policy, as if they were generated locally.
For example, the socket node might decide to log events to a
local file and also resent them to a second socket node.
@author Ceki Gülcü
@since 0.8.4
*/
public class SocketNode implements Runnable {
Socket socket;
LoggerRepository hierarchy;
ObjectInputStream ois;
static Logger logger = Logger.getLogger(SocketNode.class);
public SocketNode(Socket socket, LoggerRepository hierarchy) {
this.socket = socket;
this.hierarchy = hierarchy;
try {
ois = new ObjectInputStream(
new BufferedInputStream(socket.getInputStream()));
}
catch(Exception e) {
logger.error("Could not open ObjectInputStream to "+socket, e);
}
}
//public
//void finalize() {
//System.err.println("-------------------------Finalize called");
// System.err.flush();
//}
public void run() {
LoggingEvent event;
Logger remoteLogger;
try {
while(true) {
// read an event from the wire
event = (LoggingEvent) ois.readObject();
// get a logger from the hierarchy. The name of the logger is taken to be the name contained in the event.
remoteLogger = hierarchy.getLogger(event.getLoggerName());
//event.logger = remoteLogger;
// apply the logger-level filter
if(event.getLevel().isGreaterOrEqual(remoteLogger.getEffectiveLevel())) {
// finally log the event as if was generated locally
remoteLogger.callAppenders(event);
}
}
} catch(java.io.EOFException e) {
logger.info("Caught java.io.EOFException closing conneciton.");
} catch(java.net.SocketException e) {
logger.info("Caught java.net.SocketException closing conneciton.");
} catch(IOException e) {
logger.info("Caught java.io.IOException: "+e);
logger.info("Closing connection.");
} catch(Exception e) {
logger.error("Unexpected exception. Closing conneciton.", e);
}
try {
ois.close();
} catch(Exception e) {
logger.info("Could not close connection.", e);
}
}
}
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