AbstractSyslogBackLogHandler.java

package org.graylog2.syslog4j.impl.backlog;

import org.graylog2.syslog4j.SyslogBackLogHandlerIF;
import org.graylog2.syslog4j.SyslogIF;
import org.graylog2.syslog4j.util.SyslogUtility;

/**
 * AbstractSyslogBackLogHandler is an implementation of SyslogBackLogHandlerIF
 * that mainly provides the helpful "combine" method for handling the "reason"
 * why a BackLog has occurred.
 * <p/>
 * <p>Syslog4j is licensed under the Lesser GNU Public License v2.1.  A copy
 * of the LGPL license is available in the META-INF folder in all
 * distributions of Syslog4j and in the base directory of the "doc" ZIP.</p>
 *
 * @author <syslog4j@productivity.org>
 * @version $Id: AbstractSyslogBackLogHandler.java,v 1.1 2009/01/24 22:00:18 cvs Exp $
 */
public abstract class AbstractSyslogBackLogHandler implements SyslogBackLogHandlerIF {
    protected boolean appendReason = true;

    protected String combine(SyslogIF syslog, int level, String message, String reason) {
        // Note: syslog is explicitly ignored by default

        String _message = message != null ? message : "UNKNOWN";
        String _reason = reason != null ? reason : "UNKNOWN";

        String combinedMessage = SyslogUtility.getLevelString(level) + " " + _message;

        if (this.appendReason) {
            combinedMessage += " [" + _reason + "]";
        }

        return combinedMessage;
    }
}