[[opentracing]]
= OpenTracing Extension

*Available as of Camel Quarkus version 0.21*

The OpenTracing extension is used for tracing and timing incoming and outgoing Camel messages.

Maven users will need to add the following dependency to their `pom.xml` for this extension.

[source,xml]
------------------------------------------------------------
<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-opentracing</artifactId>
</dependency>
------------------------------------------------------------

== Usage

The extension automatically creates a Camel `OpenTracingTracer` and binds it to the Camel registry.

In order to send the captured traces to a tracing system, you need to configure some properties within `application.properties` like those below.

....
quarkus.jaeger.service-name=my-service
quarkus.jaeger.sampler-type=const
quarkus.jaeger.sampler-param=1
quarkus.jaeger.endpoint=http://localhost:14268/api/traces
....

Refer to the https://quarkus.io/guides/opentracing-guide#configuration-reference[Quarkus OpenTracing guide] for a full list of configuration options.

Route endpoints can be excluded from tracing by configuring a property named `quarkus.camel.opentracing.exclude-patterns` in `application.properties`. For example:

....
# Exclude all direct & netty-http endpoints from tracing
quarkus.camel.opentracing.exclude-patterns=direct:*,netty-http:*
....

=== Configuration

The Camel OpenTracing extension exposes the following configuration properties.

[cols="80,.^10,.^10"]
|===
|Configuration property |Type |Default

|`quarkus.camel.opentracing.encoding`

 Sets whether header keys need to be encoded
|boolean
|`false`

|`quarkus.camel.opentracing.exclude-patterns`

 Sets whether to disable tracing for endpoint URIs that match the given patterns
|List<String>
|
|===