PrefixSyslogMessageModifier.java

package org.graylog2.syslog4j.impl.message.modifier.text;

import org.graylog2.syslog4j.SyslogIF;
import org.graylog2.syslog4j.SyslogMessageModifierIF;

/**
 * PrefixSyslogMessageModifier is an implementation of SyslogMessageModifierIF
 * that provides support for adding static text to the beginning of a Syslog message.
 * <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: PrefixSyslogMessageModifier.java,v 1.5 2010/10/28 05:10:57 cvs Exp $
 */
public class PrefixSyslogMessageModifier implements SyslogMessageModifierIF {
    private static final long serialVersionUID = 6718826215583513972L;

    protected String prefix = null;
    protected String delimiter = " ";

    public PrefixSyslogMessageModifier() {
        //
    }

    public PrefixSyslogMessageModifier(String prefix) {
        this.prefix = prefix;
    }

    public PrefixSyslogMessageModifier(String prefix, String delimiter) {
        this.prefix = prefix;
        if (delimiter != null) {
            this.delimiter = delimiter;
        }
    }

    public String getPrefix() {
        return this.prefix;
    }

    public void setPrefix(String prefix) {
        this.prefix = prefix;
    }

    public String modify(SyslogIF syslog, int facility, int level, String message) {
        if (this.prefix == null || "".equals(this.prefix.trim())) {
            return message;
        }

        return this.prefix + this.delimiter + message;
    }

    public boolean verify(String message) {
        // NO-OP

        return true;
    }
}