[feature request] Add option to log to seperate folder/file

[tracure1337]

[feature request] Add option to log to seperate folder/file

This would be very helpful!

[dominicwenig-hmq]

That's already possible with the configuration in the logback.xml file.

    <appender name="MSG-LOG-EXT" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${hivemq.log.folder}/msg-log-ext.log</file>
        <append>true</append>
        <encoder name="JSON-ENCODER" class="net.logstash.logback.encoder.LogstashEncoder">
            <timeZone>UTC</timeZone>
            <timestampPattern>yyyy-MM-dd'T'HH:mm:ss.SSS'Z'</timestampPattern>
            <fieldNames>
                <timestamp>time</timestamp>
                <logger>[ignore]</logger>
                <version>[ignore]</version>
                <levelValue>[ignore]</levelValue>
                <thread>[ignore]</thread>
            </fieldNames>
        </encoder>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- daily rollover -->
            <fileNamePattern>${hivemq.log.folder}/msg-log-ext.%d{yyyy-MM-dd}.log</fileNamePattern>

            <!-- keep 30 days' worth of history -->
            <maxHistory>30</maxHistory>
        </rollingPolicy>
    </appender>

    <logger name="com.hivemq.extensions.log.mqtt" level="INFO" additivity="false">
        <appender-ref ref="MSG-LOG-EXT"/>
    </logger>