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

Example 11 with Span

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

the class SpanBuilderImplTest method startChildSpan_WithSpecifiedSampler.

@Test
public void startChildSpan_WithSpecifiedSampler() {
    Span rootSpan = SpanBuilderImpl.createWithParent(SPAN_NAME, null, spanBuilderOptions).setSampler(Samplers.alwaysSample()).startSpan();
    assertThat(rootSpan.getContext().isValid()).isTrue();
    assertThat(rootSpan.getContext().getTraceOptions().isSampled()).isTrue();
    // Apply the given sampler for child spans.
    Span childSpan = SpanBuilderImpl.createWithParent(SPAN_NAME, rootSpan, spanBuilderOptions).setSampler(Samplers.neverSample()).startSpan();
    assertThat(childSpan.getContext().isValid()).isTrue();
    assertThat(childSpan.getContext().getTraceId()).isEqualTo(rootSpan.getContext().getTraceId());
    assertThat(childSpan.getContext().getTraceOptions().isSampled()).isFalse();
}

Example 12 with Span

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

the class HttpClientHandler method handleStart.

/**
 * Instrument a request for tracing and stats before it is sent.
 *
 * <p>This method will create a span in current context to represent the HTTP call. The created
 * span will be serialized and propagated to the server.
 *
 * <p>The generated span will NOT be set as current context. User can control when to enter the
 * scope of this span. Use {@link AbstractHttpHandler#getSpanFromContext} to retrieve the span.
 *
 * @param parent the parent {@link Span}. {@code null} indicates using current span.
 * @param carrier the entity that holds the HTTP information.
 * @param request the request entity.
 * @return the {@link HttpRequestContext} that contains stats and trace data associated with the
 *     request.
 * @since 0.19
 */
public HttpRequestContext handleStart(@Nullable Span parent, C carrier, Q request) {
    checkNotNull(carrier, "carrier");
    checkNotNull(request, "request");
    if (parent == null) {
        parent = tracer.getCurrentSpan();
    }
    String spanName = getSpanName(request, extractor);
    SpanBuilder builder = tracer.spanBuilderWithExplicitParent(spanName, parent);
    Span span = builder.setSpanKind(Kind.CLIENT).startSpan();
    if (span.getOptions().contains(Options.RECORD_EVENTS)) {
        addSpanRequestAttributes(span, request, extractor);
    }
    // inject propagation header
    SpanContext spanContext = span.getContext();
    if (!spanContext.equals(SpanContext.INVALID)) {
        textFormat.inject(spanContext, carrier, setter);
    }
    return getNewContext(span, tagger.getCurrentTagContext());
}

Example 13 with Span

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

the class StartEndSpanBenchmark method startEndSampledChildSpan.

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

Example 14 with Span

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

the class StartEndSpanBenchmark method startEndSampledRootSpan.

/**
 * This benchmark attempts to measure performance of start/end for a sampled root {@code Span}.
 */
@Benchmark
@BenchmarkMode(Mode.SampleTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span startEndSampledRootSpan(Data data) {
    Span span = data.tracer.spanBuilder(SPAN_NAME).setSampler(Samplers.alwaysSample()).startSpan();
    span.end();
    return span;
}

Example 15 with Span

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

the class StartEndSpanBenchmark method startEndNonSampledChildSpan.

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