Logback

Working with Logback

• JSONEncoder

Pom.xml

<dependency>
    <groupId>net.logstash.logback</groupId>
    <artifactId>logstash-logback-encoder</artifactId>
    <version>8.0</version>
</dependency>

Add file src/main/resources/logback-spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

    <include resource="org/springframework/boot/logging/logback/defaults.xml"/>

    <springProperty scope="context" name="application_name" source="spring.application.name"/>

    <appender name="jsonConsoleAppender" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
            <providers>
                <timestamp>
                    <timeZone>UTC</timeZone>
                </timestamp>
                <version/>
                <logLevel/>
                <message/>
                <loggerName/>
                <threadName/>
                <context/>
                <pattern>
                    <omitEmptyFields>true</omitEmptyFields>
                    <pattern>
                        {
                            "trace": {
                            "trace_id": "%mdc{X-B3-TraceId}",
                            "span_id": "%mdc{X-B3-SpanId}",
                            "parent_span_id": "%mdc{X-B3-ParentSpanId}",
                            "exportable": "%mdc{X-Span-Export}"
                            }
                        }
                    </pattern>
                </pattern>
                <mdc>
                    <excludeMdcKeyName>traceId</excludeMdcKeyName>
                    <excludeMdcKeyName>spanId</excludeMdcKeyName>
                    <excludeMdcKeyName>parentId</excludeMdcKeyName>
                    <excludeMdcKeyName>spanExportable</excludeMdcKeyName>
                    <excludeMdcKeyName>X-B3-TraceId</excludeMdcKeyName>
                    <excludeMdcKeyName>X-B3-SpanId</excludeMdcKeyName>
                    <excludeMdcKeyName>X-B3-ParentSpanId</excludeMdcKeyName>
                    <excludeMdcKeyName>X-Span-Export</excludeMdcKeyName>
                </mdc>
                <stackTrace/>
            </providers>
        </encoder>
    </appender>

    <root level="INFO">
        <appender-ref ref="jsonConsoleAppender"/>
    </root>

</configuration>