logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration>
<configuration>
  <include resource="org/springframework/boot/logging/logback/base.xml"/>
  <include resource="org/springframework/boot/logging/logback/defaults.xml"/>

  <springProperty scope="context" name="APP_NAME" source="spring.application.name"/>
  <springProperty scope="context" name="APP_VERSION" source="spring.application.version"/>
  <variable name="LOGSTASHDESTINATION" value="${LOGSTASH:-nuc:5044}"/>

  <appender name="LOGSTASH" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
    <destination>${LOGSTASHDESTINATION}</destination>
    <encoder charset="UTF-8" class="net.logstash.logback.encoder.LogstashEncoder">
        <providers>
            <mdc/> 
            <context/> 
            <logLevel/>
            <loggerName/>

            <pattern>
                <pattern>
                    {
                    "appName": "${APP_NAME}",
                    "appVersion": "${APP_VERSION}",
                    "trace": "%X{X-B3-TraceId:-}",
                    "span": "%X{X-B3-SpanId:-}",
                    "parent": "%X{X-B3-ParentSpanId:-}",
                    }
                </pattern>
            </pattern>

            <threadName/>
            <message/>

            <logstashMarkers/> 
            <arguments/> 

            <stackTrace/>
        </providers>
    </encoder>    
  </appender>
  <root level="INFO">
    <appender-ref ref="LOGSTASH" />
    <appender-ref ref="CONSOLE" />
  </root>
</configuration>