Log4j
OpenTelemetry Java agent instrumentation
This instrumentation adds trace context (trace ID, span ID, and trace flags) to Log4j's ThreadContext, it does not emit any telemetry on its own.
- Name:
log4j-context-data-2.17 - Scope:
io.opentelemetry.log4j-context-data-2.17 - Target versions:
org.apache.logging.log4j:log4j-core:[2.17.0,) - Library: https://logging.apache.org/log4j/2.x/
Configuration
| Option | Type | Default | Description |
|---|---|---|---|
otel.instrumentation.common.logging.span-id-key | string | span_id | Specifies the key name used to store the span ID in the logging context. |
otel.instrumentation.common.logging.trace-flags-key | string | trace_flags | Specifies the key name used to store the trace flags in the logging context. |
otel.instrumentation.common.logging.trace-id-key | string | trace_id | Specifies the key name used to store the trace ID in the logging context. |
otel.instrumentation.common.mdc.resource-attributes | list | Specifies which resource attributes to add to the logging context as a comma-separated list of attribute keys. | |
otel.instrumentation.log4j-context-data.add-baggage | boolean | false | Enables adding baggage entries to the Log4j ThreadContext, prefixed with "baggage.". |