60 lines
1.6 KiB
Markdown
60 lines
1.6 KiB
Markdown
# MDC Instrumentation for Logback version 1.0 and higher
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This module integrates instrumentation with Logback by injecting the trace ID and span ID from a
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mounted span using a custom Logback appender.
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## Quickstart
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### Add these dependencies to your project
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Replace `OPENTELEMETRY_VERSION` with the [latest
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release](https://search.maven.org/search?q=g:io.opentelemetry.instrumentation%20AND%20a:opentelemetry-logback-mdc-1.0).
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For Maven, add to your `pom.xml` dependencies:
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```xml
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<dependencies>
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<dependency>
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<groupId>io.opentelemetry.instrumentation</groupId>
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<artifactId>opentelemetry-logback-mdc-1.0</artifactId>
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<version>OPENTELEMETRY_VERSION</version>
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</dependency>
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</dependencies>
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```
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For Gradle, add to your dependencies:
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```kotlin
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dependencies {
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runtimeOnly("io.opentelemetry.instrumentation:opentelemetry-logback-mdc-1.0:OPENTELEMETRY_VERSION")
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}
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```
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### Usage
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logback.xml:
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```xml
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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>%d{HH:mm:ss.SSS} trace_id=%X{trace_id} span_id=%X{span_id} trace_flags=%X{trace_flags} %msg%n</pattern>
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</encoder>
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</appender>
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<!-- Just wrap your logging appender, for example ConsoleAppender, with OpenTelemetryAppender -->
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<appender name="OTEL" class="io.opentelemetry.instrumentation.logback.v1_0.OpenTelemetryAppender">
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<appender-ref ref="CONSOLE"/>
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</appender>
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...
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</configuration>
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```
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Logging events will automatically have context information from the span context injected. The
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following attributes are available for use:
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- `trace_id`
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- `span_id`
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- `trace_flags`
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