/*
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Dec 1st 2001, Fermi National Accelerator Laboratory (FNAL) documents and
software are sponsored by the U.S. Department of Energy under Contract No.
DE-AC02-76CH03000. Therefore, the U.S. Government retains a world-wide
non-exclusive, royalty-free license to publish or reproduce these documents
and software for U.S. Government purposes. All documents and software
available from this server are protected under the U.S. and Foreign
Copyright Laws, and FNAL reserves all rights.
Distribution of the software available from this server is free of
charge subject to the user following the terms of the Fermitools
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Redistribution and/or modification of the software shall be accompanied
by the Fermitools Software Legal Information (including the copyright
notice).
The user is asked to feed back problems, benefits, and/or suggestions
about the software to the Fermilab Software Providers.
Neither the name of Fermilab, the URA, nor the names of the contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
DISCLAIMER OF LIABILITY (BSD):
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 FERMILAB,
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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*/
/*
Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2013, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
*/
package org.dcache.alarms.logback;
import ch.qos.logback.classic.spi.ILoggingEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedInputStream;
import java.io.EOFException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.Socket;
import java.net.SocketException;
import java.util.Map;
import dmg.cells.nucleus.CDC;
import org.dcache.alarms.Alarm;
/**
* Reads {@link ILoggingEvent} objects sent from a remote client using Sockets
* (TCP). These events are passed directly to the {@link LogEntryHandler},
* bypassing the logger tree.
* <p>
*
* This class has been adapted from {@link ch.qos.logback.classic.net.SocketNode}.
*
* @author Ceki Gülcü
* @author Sébastien Pennec
* @author Moses Hohman <mmhohman@rainbow.uchicago.edu>
* @author arossi
*/
final class LogEntryServerSocketNode implements Runnable {
private static final Logger LOGGER
= LoggerFactory.getLogger(LogEntryServerSocketNode.class);
private final ObjectInputStream ois;
private final Socket socket;
private final LogEntryServer server;
private final String hostName;
private volatile boolean running = false;
LogEntryServerSocketNode(LogEntryServer socketServer, Socket socket)
throws IOException {
this.server = socketServer;
this.socket = socket;
hostName = socket.getInetAddress().getCanonicalHostName();
ois = new ObjectInputStream(new BufferedInputStream(socket.getInputStream()));
}
public void run() {
LogEntryHandler handler = server.getHandler();
running = true;
try {
while (running) {
ILoggingEvent event = (ILoggingEvent) ois.readObject();
Map<String, String> mdc = event.getMDCPropertyMap();
mdc.put(Alarm.HOST_TAG, hostName);
mdc.put(Alarm.SERVICE_TAG, mdc.remove(CDC.MDC_CELL));
mdc.put(Alarm.DOMAIN_TAG, mdc.remove(CDC.MDC_DOMAIN));
handler.handle(event);
}
} catch (EOFException e) {
LOGGER.trace("Benign EOF ({}).", e.getMessage());
} catch (SocketException e) {
LOGGER.trace("Benign Socket error ({}).", e.getMessage());
} catch (IOException e) {
LOGGER.debug("Error on socket node {}: {}, cause: {}.",
this, e.getMessage(), e.getCause());
} catch (Exception e) {
LOGGER.error("Unexpected exception.", e);
}
LOGGER.debug("Closing socket node for {}.", this);
server.socketNodeClosing(this);
close();
}
@Override
public String toString() {
return this.getClass().getSimpleName()
+ ": " + socket.getRemoteSocketAddress().toString()
+ " (" + hostName + ")";
}
void close() {
if (running) {
running = false;
try {
ois.close();
} catch (IOException e) {
LOGGER.debug("Could not close connection: {}, cause: {}.",
e.getMessage(), e.getCause());
}
}
}
}