Logging markers with StructuredArguments

[viartemev]

Is there any way to print StructuredArguments in ConsoleAppender in stdout?
I found a way for printing Markers -> add %marker to pattern:

<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg %marker %n</pattern>
        </encoder>
    </appender>
    <root level="debug">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>

It doesn't work for StructuredArguments. Are they Markers (in terms of Slf4J or not)?

[philsttr]

Hi @viartemev ,

To print structured arguments when using a pattern layout, include an argument substitution string ({}) for each structured argument in the message format string (just like non-structured arguments). For example...

logger.info("log message {} {}",
    StructuredArguments.keyValue("key1", "value1"),
    StructuredArguments.keyValue("key2", "value2"));

... results in a log event with the message log message key1=value1 key2=value2

StructuredArguments will not be printed when using logback's %markers conversion word.

Note that StructuredArguments and the markers provided by logstash-logback-encoder are primarily designed for use with the encoders provided by logstash-logback-encoder (e.g. net.logstash.logback.encoder.LogstashEncoder), rather than logback's pattern layout.

[viartemev]

Thanks!