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

Example 1 with SpanBuilder

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

the class HelloWorldServer method performWork.

// A helper function that performs some work in its own Span.
private static void performWork(Span parent) {
    SpanBuilder spanBuilder = tracer.spanBuilderWithExplicitParent("internal_work", parent).setRecordEvents(true);
    try (Scope scope = spanBuilder.startScopedSpan()) {
        Span span = tracer.getCurrentSpan();
        span.putAttribute("my_attribute", AttributeValue.stringAttributeValue("blue"));
        span.addAnnotation("Performing work.");
        // Working hard here.
        sleepFor(20);
        span.addAnnotation("Done work.");
    }
}

Example 2 with SpanBuilder

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

the class TracerImplTest method createSpanBuilder.

@Test
public void createSpanBuilder() {
    SpanBuilder spanBuilder = tracer.spanBuilderWithExplicitParent(SPAN_NAME, BlankSpan.INSTANCE);
    assertThat(spanBuilder).isInstanceOf(SpanBuilderImpl.class);
}

Example 3 with SpanBuilder

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

the class TracerImplTest method createSpanBuilderWithRemoteParet.

@Test
public void createSpanBuilderWithRemoteParet() {
    SpanBuilder spanBuilder = tracer.spanBuilderWithRemoteParent(SPAN_NAME, SpanContext.INVALID);
    assertThat(spanBuilder).isInstanceOf(SpanBuilderImpl.class);
}

Example 4 with SpanBuilder

use of io.opencensus.trace.SpanBuilder 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 5 with SpanBuilder

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

the class HttpServerHandler method handleStart.

/**
 * Instrument an incoming request before it is handled.
 *
 * <p>This method will create a span under the deserialized propagated parent context. If the
 * parent context is not present, the span will be created under the current context.
 *
 * <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 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(C carrier, Q request) {
    checkNotNull(carrier, "carrier");
    checkNotNull(request, "request");
    SpanBuilder spanBuilder = null;
    String spanName = getSpanName(request, extractor);
    // de-serialize the context
    SpanContext spanContext = null;
    try {
        spanContext = textFormat.extract(carrier, getter);
    } catch (SpanContextParseException e) {
    // TODO: Currently we cannot distinguish between context parse error and missing context.
    // Logging would be annoying so we just ignore this error and do not even log a message.
    }
    if (spanContext == null || publicEndpoint) {
        spanBuilder = tracer.spanBuilder(spanName);
    } else {
        spanBuilder = tracer.spanBuilderWithRemoteParent(spanName, spanContext);
    }
    Span span = spanBuilder.setSpanKind(Kind.SERVER).startSpan();
    if (publicEndpoint && spanContext != null) {
        span.addLink(Link.fromSpanContext(spanContext, Type.PARENT_LINKED_SPAN));
    }
    if (span.getOptions().contains(Options.RECORD_EVENTS)) {
        addSpanRequestAttributes(span, request, extractor);
    }
    return getNewContext(span, tagger.getCurrentTagContext());
}