Kibana logback appender

logback.xml

<appender name="server-json" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <Append>true</Append>
        <File>${LOG_PATH:-.}/json.log</File>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder">
            <fieldNames>
                <thread>[ignore]</thread>
                <levelValue>[ignore]</levelValue>
                <timestamp>timestamp</timestamp>
                <version>version</version>
            </fieldNames>
            <customFields>{"application": "${projetc.artifactId}"}</customFields>
            <throwableConverter class="net.logstash.logback.stacktrace.ShortenedThrowableConverter">
                <maxDepthPerThrowable>30</maxDepthPerThrowable>
                <maxLength>2048</maxLength>
                <shortenedClassNameLength>20</shortenedClassNameLength>
                <exclude>sun\.reflect\..*\.invoke.*</exclude>
                <exclude>net\.sf\.cglib\.proxy\.MethodProxy\.invoke</exclude>
                <rootCauseFirst>true</rootCauseFirst>
            </throwableConverter>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH:-.}/json.log%d{yyyy-MM-dd}</fileNamePattern>
            <maxHistory>10</maxHistory>
        </rollingPolicy>
    </appender>