daml/triggers/service/release/trigger-service-logback.xml

<configuration>
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <if condition='isDefined("LOG_FORMAT_JSON")'>
            <then>
                <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
            </then>
            <else>
                <encoder>
                    <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg %replace(, context: %marker){', context: $', ''} %n</pattern>
                </encoder>
            </else>
        </if>
    </appender>

    <appender name="STDOUT" class="net.logstash.logback.appender.LoggingEventAsyncDisruptorAppender">
        <appender-ref ref="console"/>
    </appender>

    <logger name="io.netty" level="WARN"/>
    <logger name="io.grpc.netty" level="WARN"/>
    <logger name="com.daml.lf.engine.trigger" level="INFO"/>

    <root level="${LOG_LEVEL_ROOT:-INFO}">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>