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

Example 1 with Span

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

the class BasicOperationsBenchmark method createSpanWithCurrentSpan.

/**
 * Create a child span from the current span.
 */
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span createSpanWithCurrentSpan(Data data) {
    Span span = data.tracer.spanBuilder("ChildSpanFromCurrent").setRecordEvents(data.recorded).setSampler(data.sampled ? Samplers.alwaysSample() : Samplers.neverSample()).startSpan();
    span.end();
    return span;
}

Example 2 with Span

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

the class SpanOperationsBenchmark method addAnnotationWithAttributes.

/**
 * Add an annotation with attributes.
 */
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Span addAnnotationWithAttributes(Data data) {
    Span span = data.annotationSpanAttributes;
    span.addAnnotation(ANNOTATION_DESCRIPTION, data.attributeMap);
    return span;
}

Example 3 with Span

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

the class ContextUtilsTest method testGetCurrentSpan_ContextSetToNull.

@Test
public void testGetCurrentSpan_ContextSetToNull() {
    ContextHandle orig = ContextHandleUtils.withValue(ContextHandleUtils.currentContext(), null).attach();
    try {
        Span span = ContextHandleUtils.getValue(ContextHandleUtils.currentContext());
        // ContextUtils.getValue always returns non-null.
        assertThat(span).isEqualTo(BlankSpan.INSTANCE);
    } finally {
        ContextHandleUtils.currentContext().detach(orig);
    }
}

Example 4 with Span

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

the class MetricReader method readAndExport.

/**
 * Reads the metrics from the {@link MetricProducerManager} and exports them to the {@code
 * metricExporter}.
 *
 * @param metricExporter the exporter called to export the metrics read.
 * @since 0.19
 */
public void readAndExport(MetricExporter metricExporter) {
    Span span = tracer.spanBuilder(spanName).setRecordEvents(true).setSampler(probabilitySampler).startSpan();
    Scope scope = tracer.withSpan(span);
    try {
        ArrayList<Metric> metricsList = new ArrayList<>();
        for (MetricProducer metricProducer : metricProducerManager.getAllMetricProducer()) {
            metricsList.addAll(metricProducer.getMetrics());
        }
        metricExporter.export(metricsList);
    } catch (Throwable e) {
        logger.log(Level.WARNING, "Exception thrown by the metrics exporter.", e);
        span.setStatus(Status.UNKNOWN.withDescription("Exception when export metrics: " + exceptionMessage(e)));
    } finally {
        scope.close();
        span.end();
    }
}

Example 5 with Span

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

the class MultiSpansTracing method doWork.

private static void doWork() {
    Span rootSpan = tracer.spanBuilderWithExplicitParent("MyRootSpan", null).startSpan();
    rootSpan.addAnnotation("Annotation to the root Span before child is created.");
    Span childSpan = tracer.spanBuilderWithExplicitParent("MyChildSpan", rootSpan).startSpan();
    childSpan.addAnnotation("Annotation to the child Span");
    childSpan.end();
    rootSpan.addAnnotation("Annotation to the root Span after child is ended.");
    rootSpan.end();
}