org.apache.log4j.net.SocketNode Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.log4j.net;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.Socket;
import org.apache.log4j.Logger;
import org.apache.log4j.spi.LoggerRepository;
import org.apache.log4j.spi.LoggingEvent;
// 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;
HardenedLoggingEventInputStream ois;
static Logger logger = Logger.getLogger(SocketNode.class);
public SocketNode(Socket socket, LoggerRepository hierarchy) {
this.socket = socket;
this.hierarchy = hierarchy;
try {
ois = new HardenedLoggingEventInputStream((socket.getInputStream()));
} catch (InterruptedIOException e) {
Thread.currentThread().interrupt();
logger.error("Could not open ObjectInputStream to " + socket, e);
} catch (IOException e) {
logger.error("Could not open ObjectInputStream to " + socket, e);
} catch (RuntimeException 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 {
if (ois != null) {
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 (InterruptedIOException e) {
Thread.currentThread().interrupt();
logger.info("Caught java.io.InterruptedIOException: " + e);
logger.info("Closing connection.");
} catch (IOException e) {
logger.info("Caught java.io.IOException: " + e);
logger.info("Closing connection.");
} catch (Exception e) {
logger.error("Unexpected exception. Closing conneciton.", e);
} finally {
if (ois != null) {
try {
ois.close();
} catch (Exception e) {
logger.info("Could not close connection.", e);
}
}
if (socket != null) {
try {
socket.close();
} catch (InterruptedIOException e) {
Thread.currentThread().interrupt();
} catch (IOException ex) {
}
}
}
}
}