Examples with Span io.opencensus.trace.Span used on opensource projects

Example 16 with Span

use of io.opencensus.trace.Span in project instrumentation-java by census-instrumentation.

the class StartEndSpanBenchmark method startEndRecordEventsChildSpan.

/**
 * This benchmark attempts to measure performance of start/end for a child {@code Span} with
 * record events option.
 */
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndRecordEventsChildSpan(Data data) {
    Span span = data.tracer.spanBuilderWithExplicitParent(SPAN_NAME, data.rootSpan).setSampler(Samplers.neverSample()).setRecordEvents(true).startSpan();
    span.end();
    return span;
}

Example 17 with Span

use of io.opencensus.trace.Span in project instrumentation-java by census-instrumentation.

the class OcAgentTraceExporterIntegrationTest method testExportSpans.

@Test
public void testExportSpans() throws InterruptedException, IOException {
    // Mock a real-life scenario in production, where Agent is not enabled at first, then enabled
    // after an outage. Users should be able to see traces shortly after Agent is up.
    // Configure to be always-sampled.
    TraceConfig traceConfig = Tracing.getTraceConfig();
    TraceParams activeTraceParams = traceConfig.getActiveTraceParams();
    traceConfig.updateActiveTraceParams(activeTraceParams.toBuilder().setSampler(Samplers.alwaysSample()).build());
    // Register the OcAgent Exporter first.
    // Agent is not yet up and running so Exporter will just retry connection.
    OcAgentTraceExporter.createAndRegister(OcAgentTraceExporterConfiguration.builder().setServiceName(SERVICE_NAME).setUseInsecure(true).setEnableConfig(false).build());
    // Create one root span and 5 children.
    try (Scope scope = tracer.spanBuilder("root").startScopedSpan()) {
        for (int i = 0; i < 5; i++) {
            // Fake work
            doWork("first-iteration-child-" + i, i);
        }
    }
    // Wait 5s so that SpanExporter exports exports all spans.
    Thread.sleep(5000);
    // No interaction with Agent so far.
    assertThat(fakeOcAgentTraceServiceGrpc.getExportTraceServiceRequests()).isEmpty();
    // Image an outage happened, now start Agent. Exporter should be able to connect to Agent
    // when the next batch of SpanData arrives.
    agent.start();
    // Create one root span and 8 children.
    try (Scope scope = tracer.spanBuilder("root2").startScopedSpan()) {
        for (int i = 0; i < 8; i++) {
            // Fake work
            doWork("second-iteration-child-" + i, i);
        }
    }
    // Wait 5s so that SpanExporter exports exports all spans.
    Thread.sleep(5000);
    List<ExportTraceServiceRequest> exportRequests = fakeOcAgentTraceServiceGrpc.getExportTraceServiceRequests();
    assertThat(exportRequests.size()).isAtLeast(2);
    ExportTraceServiceRequest firstRequest = exportRequests.get(0);
    Node expectedNode = OcAgentNodeUtils.getNodeInfo(SERVICE_NAME);
    Node actualNode = firstRequest.getNode();
    assertThat(actualNode.getIdentifier().getHostName()).isEqualTo(expectedNode.getIdentifier().getHostName());
    assertThat(actualNode.getIdentifier().getPid()).isEqualTo(expectedNode.getIdentifier().getPid());
    assertThat(actualNode.getLibraryInfo()).isEqualTo(expectedNode.getLibraryInfo());
    assertThat(actualNode.getServiceInfo()).isEqualTo(expectedNode.getServiceInfo());
    List<io.opencensus.proto.trace.v1.Span> spanProtos = new ArrayList<>();
    for (int i = 1; i < exportRequests.size(); i++) {
        spanProtos.addAll(exportRequests.get(i).getSpansList());
    }
    // On some platforms (e.g Windows) SpanData will never be dropped, so spans from the first batch
    // may also be exported after Agent is up.
    assertThat(spanProtos.size()).isAtLeast(9);
    Set<String> exportedSpanNames = new HashSet<>();
    for (io.opencensus.proto.trace.v1.Span spanProto : spanProtos) {
        if ("root2".equals(spanProto.getName().getValue())) {
            assertThat(spanProto.getChildSpanCount().getValue()).isEqualTo(8);
            assertThat(spanProto.getParentSpanId()).isEqualTo(ByteString.EMPTY);
        } else if ("root".equals(spanProto.getName().getValue())) {
            // This won't happen on Linux but does happen on Windows.
            assertThat(spanProto.getChildSpanCount().getValue()).isEqualTo(5);
            assertThat(spanProto.getParentSpanId()).isEqualTo(ByteString.EMPTY);
        }
        exportedSpanNames.add(spanProto.getName().getValue());
    }
    // The second batch of spans should be exported no matter what.
    assertThat(exportedSpanNames).contains("root2");
    for (int i = 0; i < 8; i++) {
        assertThat(exportedSpanNames).contains("second-iteration-child-" + i);
    }
}

Example 18 with Span

use of io.opencensus.trace.Span in project instrumentation-java by census-instrumentation.

the class OcAgentTraceExporterIntegrationTest method doWork.

private void doWork(String spanName, int i) {
    try (Scope scope = tracer.spanBuilder(spanName).startScopedSpan()) {
        // Simulate some work.
        Span span = tracer.getCurrentSpan();
        try {
            Thread.sleep(10L);
        } catch (InterruptedException e) {
            span.setStatus(Status.INTERNAL.withDescription(e.toString()));
        }
        Map<String, AttributeValue> attributes = new HashMap<String, AttributeValue>();
        attributes.put("inner work iteration number", AttributeValue.longAttributeValue(i));
        span.addAnnotation("Invoking doWork", attributes);
    }
}

Example 19 with Span

use of io.opencensus.trace.Span in project instrumentation-java by census-instrumentation.

the class ZPageHttpHandler method handle.

@Override
public final void handle(HttpExchange httpExchange) throws IOException {
    Span span = tracer.spanBuilderWithExplicitParent(httpServerSpanName, null).setRecordEvents(true).startSpan();
    try (Scope ss = tracer.withSpan(span)) {
        span.putAttribute("/http/method ", AttributeValue.stringAttributeValue(httpExchange.getRequestMethod()));
        httpExchange.sendResponseHeaders(200, 0);
        zpageHandler.emitHtml(uriQueryToMap(httpExchange.getRequestURI()), httpExchange.getResponseBody());
    } finally {
        httpExchange.close();
        span.end(END_SPAN_OPTIONS);
    }
}

Example 20 with Span

use of io.opencensus.trace.Span in project instrumentation-java by census-instrumentation.

the class SpanBuilderImpl method linkSpans.

private static void linkSpans(Span span, List<Span> parentLinks) {
    if (!parentLinks.isEmpty()) {
        Link childLink = Link.fromSpanContext(span.getContext(), Type.CHILD_LINKED_SPAN);
        for (Span linkedSpan : parentLinks) {
            linkedSpan.addLink(childLink);
            span.addLink(Link.fromSpanContext(linkedSpan.getContext(), Type.PARENT_LINKED_SPAN));
        }
    }
}