Examples with RabbitMQCollector zipkin2.collector.rabbitmq.RabbitMQCollector used on opensource projects

Example 1 with RabbitMQCollector

use of zipkin2.collector.rabbitmq.RabbitMQCollector in project zipkin by openzipkin.

the class ITRabbitMQCollector method skipsOnSpanStorageException.

/**
 * Guards against errors that leak from storage, such as InvalidQueryException
 */
@Test
void skipsOnSpanStorageException() throws Exception {
    AtomicInteger counter = new AtomicInteger();
    consumer = (input) -> new Call.Base<Void>() {

        @Override
        protected Void doExecute() {
            throw new AssertionError();
        }

        @Override
        protected void doEnqueue(Callback<Void> callback) {
            if (counter.getAndIncrement() == 1) {
                callback.onError(new RuntimeException("storage fell over"));
            } else {
                receivedSpans.add(spans);
                callback.onSuccess(null);
            }
        }

        @Override
        public Call<Void> clone() {
            throw new AssertionError();
        }
    };
    final StorageComponent storage = buildStorage(consumer);
    RabbitMQCollector.Builder builder = builder("storage_exception").storage(storage);
    produceSpans(THRIFT.encodeList(spans), builder.queue);
    // tossed on error
    produceSpans(THRIFT.encodeList(spans), builder.queue);
    produceSpans(THRIFT.encodeList(spans), builder.queue);
    try (RabbitMQCollector collector = builder.build()) {
        collector.start();
        assertThat(receivedSpans.take()).containsExactlyElementsOf(spans);
        // the only way we could read this, is if the malformed span was skipped.
        assertThat(receivedSpans.take()).containsExactlyElementsOf(spans);
    }
    assertThat(rabbitmqMetrics.messages()).isEqualTo(3);
    // storage failure isn't a message failure
    assertThat(rabbitmqMetrics.messagesDropped()).isZero();
    assertThat(rabbitmqMetrics.bytes()).isEqualTo(THRIFT.encodeList(spans).length * 3);
    assertThat(rabbitmqMetrics.spans()).isEqualTo(spans.size() * 3);
    // only one dropped
    assertThat(rabbitmqMetrics.spansDropped()).isEqualTo(spans.size());
}