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Example #2: Client and Server with nested trace

In this example server-side implementation of the JAX-RS service is going to call an external system (simulated as a simple delay of 500ms) within its own span. The client-side code stays unchanged.

Code Block
java
java
@Produces( { MediaType.APPLICATION_JSON } )
@GET
public Collection<Book> getBooks(@Context final TracerContext tracer) throws Exception {
    try(final Scope scope = tracer.startSpan("Calling External System")) {
        // Simulating a delay of 500ms required to call external system
        Thread.sleep(500);
             
        return Arrays.asList(
            new Book("Apache CXF Web Service Development", "Naveen Balani, Rajeev Hathi")
        );
    }
}

The actual invocation of the request by the client (with service name tracer-client) and consequent invocation of the service on the server side (service name tracer-server) is going to generate the following sample traces (taken from Jaeger UI):

Image AddedTBD

Example #3: Client and Server trace with annotations

In this example server-side implementation of the JAX-RS service is going to add timeline to the active span. The client-side code stays unchanged.

Code Block
java
java
@Produces( { MediaType.APPLICATION_JSON } )
@GET
public Collection<Book> getBooks(@Context final TracerContext tracer) throws Exception {
    tracer.timeline("Preparing Books");
    // Simulating some work using a delay of 100ms
    Thread.sleep(100);
          
    return Arrays.asList(
        new Book("Apache CXF Web Service Development", "Naveen Balani, Rajeev Hathi")
    );
}

The actual invocation of the request by the client (with service name tracer-client) and consequent invocation of the service on the server side (service name traceser-server) is going to generate the following sample traces (taken from Jaeger UI):

Image AddedTBD

Example #4: Client and Server with binary annotations (key/value)

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