Apache Pulsar Client Tracing Instrumentation

Tracing instrumentation for Apache Pulsar client.

OpenTracing Instrumentation

Requirements

• Java 8
• Pulsar client >= 2.5.0

Installation

Add Pulsar client and OpenTracing instrumentation for the Pulsar client.

<dependency>
    <groupId>org.apache.pulsar</groupId>
    <artifactId>pulsar-client</artifactId>
    <version>VERSION</version>
</dependency>

<dependency>
    <groupId>io.streamnative</groupId>
    <artifactId>opentracing-pulsar-client</artifactId>
    <version>VERSION</version>
</dependency>

Usage

Interceptors based solution

// Instantiate tracer
Tracer tracer = ...

// Optionally register tracer with GlobalTracer
GlobalTracer.register(tracer);

Producer

// Instantiate Producer with tracing interceptor.
Producer<String> producer = client
    .newProducer(Schema.STRING)
    .intercept(new TracingProducerInterceptor())
    .topic("your-topic")
    .create();

// Send messages.
producer.send("Hello OpenTracing!");

Consumer

// Instantiate Consumer with tracing interceptor.
Consumer<String> consumer = client.newConsumer(Schema.STRING)
    .topic("your-topic")
    .intercept(new TracingConsumerInterceptor<>())
    .subscriptionName("your-sub")
    .subscribe();

// Receive messages.
Message<String> message = consumer.receive();

// To retrieve SpanContext from the message(Consumer side).
SpanContext spanContext = TracingPulsarUtils.extractSpanContext(message, tracer);

License

Apache 2.0 License.