OpenTelemetry

JVM since2.1.0 Native since2.1.0

Distributed tracing using OpenTelemetry

What’s inside

Please refer to the above link for usage and configuration details.

Maven coordinates

Create a new project with this extension on code.quarkus.io

Or add the coordinates to your existing project:

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-opentelemetry</artifactId>
</dependency>

Check the User guide for more information about writing Camel Quarkus applications.

Usage

The extension automatically creates a Camel OpenTelemetryTracer 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.

# Identifier for the origin of spans created by the application
quarkus.application.name=my-camel-application

# For OTLP
quarkus.opentelemetry.tracer.exporter.otlp.endpoint=http://localhost:55680

# For Jaeger
quarkus.opentelemetry.tracer.exporter.jaeger.endpoint=http://localhost:14268/api/traces

Note that you must add a dependency to the OpenTelemetry exporter that you want to work with. At present, Quarkus has support for Jaeger and the OpenTelemetry Protocol Specification (OTLP).

For Jaeger:

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-opentelemetry-exporter-jaeger</artifactId>
</dependency>

For OTLP:

<dependency>
    <groupId>io.quarkus</groupId>
    <artifactId>quarkus-opentelemetry-exporter-otlp</artifactId>
</dependency>

Refer to the Quarkus OpenTelemetry guide for a full list of configuration options.

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

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

Additional Camel Quarkus configuration

Configuration property Type Default

quarkus.camel.opentelemetry.encoding

Sets whether header names need to be encoded. Can be useful in situations where OpenTelemetry propagators potentially set header name values in formats that are not compatible with the target system. E.g for JMS where the specification mandates header names are valid Java identifiers.

boolean

false

quarkus.camel.opentelemetry.exclude-patterns

Sets whether to disable tracing for endpoint URIs that match the given patterns. The pattern can take the following forms:

1. An exact match on the endpoint URI. E.g platform-http:/some/path

2. A wildcard match. E.g platform-http:*

3. A regular expression matching the endpoint URI. E.g platform-http:/prefix/.*

string

Configuration property fixed at build time. All other configuration properties are overridable at runtime.

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