io.opencensus.trace.Annotation Java Examples

@Override
public void addAnnotation(String description, Map<String, AttributeValue> attributes) {
  Preconditions.checkNotNull(description, "description");
  Preconditions.checkNotNull(attributes, "attribute");
  synchronized (this) {
    if (hasBeenEnded) {
      logger.log(Level.FINE, "Calling addAnnotation() on an ended Span.");
      return;
    }
    getInitializedAnnotations()
        .addEvent(
            new EventWithNanoTime<Annotation>(
                clock.nowNanos(),
                Annotation.fromDescriptionAndAttributes(description, attributes)));
  }
}
 

public static ParentSpan startExplicitParentSpan(String name) {
  Span span;
  if (enabledExporter) {
    span = tracer.spanBuilderWithExplicitParent(name, null).startSpan();
  } else {
    span = tracer.spanBuilderWithExplicitParent(name, null).setRecordEvents(true).startSpan();
  }

  span.addAnnotation(getBaseAnnotation());
  Annotation vmAnno =
      Annotation.fromDescriptionAndAttributes("java.vm properties", javaAttributeMap);
  span.addAnnotation(vmAnno);
  Annotation osAnno = Annotation.fromDescriptionAndAttributes("os properties", osAttributeMap);
  span.addAnnotation(osAnno);
  return new ParentSpan(span, name);
}
 

@Test
public void testTracingException() {
  final MockSpan span = new MockSpan();

  final Foo delegate = new ThrowingFooImpl();

  final Foo proxy = TracingProxy.instrument(Foo.class, delegate, tracer);

  when(tracer.spanBuilder("ThrowingFooImpl.bar")).thenReturn(spanBuilder);
  when(spanBuilder.startSpan()).thenReturn(span);

  try {
    proxy.bar();
    fail();
  } catch (Exception ignore) {
  }

  verify(tracer).spanBuilder("ThrowingFooImpl.bar");
  verify(spanBuilder).startSpan();
  assertThat(span.ended, is(true));
  assertThat(span.status, is(UNKNOWN));
  assertThat(span.annotations, contains(Annotation.fromDescription("Exception thrown")));
}
 

@Test
public void handlesException() {
  // When
  Sample sample = (Sample) context.getBean("sample");
  try {
    sample.boom();
  } catch (Exception ignored) {
    //  ok
  }

  // Then
  List<SpanData> spanList = handler.waitForExport(1);
  assertThat(spanList).isNotNull();
  assertThat(spanList.size()).isEqualTo(1);

  SpanData spanData = spanList.get(0);
  assertThat(spanData.getName()).isEqualTo("boom");
  assertThat(spanData.getStatus()).isEqualTo(Status.UNKNOWN);

  SpanData.TimedEvents<Annotation> annotations = spanData.getAnnotations();
  assertThat(annotations).isNotNull();

  List<SpanData.TimedEvent<Annotation>> events = annotations.getEvents();
  assertThat(events.size()).isEqualTo(1);
  assertThat(events.get(0).getEvent().getDescription()).isEqualTo("error");
}
 

@Test
public void sqlExecute() throws Exception {
  // When
  String sql = "select 1";
  Sample sample = (Sample) context.getBean("sample");
  sample.execute(sql);

  // Then
  List<SpanData> data = handler.waitForExport(1);
  assertThat(data).isNotNull();
  assertThat(data.size()).isEqualTo(1);
  assertThat(data.get(0).getName()).isEqualTo("execute-4705ea0d"); // sql-{hash of sql statement}

  List<SpanData.TimedEvent<Annotation>> events = data.get(0).getAnnotations().getEvents();
  assertThat(events.size()).isEqualTo(1);
  assertThat(events.get(0).getEvent().getDescription()).isEqualTo(sql);
}
 

@Test
public void sqlUpdate() throws Exception {
  // When
  String sql = "update content set value = 1";
  Sample sample = (Sample) context.getBean("sample");
  sample.executeUpdate(sql);

  // Then
  List<SpanData> data = handler.waitForExport(1);
  assertThat(data).isNotNull();
  assertThat(data.size()).isEqualTo(1);
  assertThat(data.get(0).getName()).isEqualTo("executeUpdate-acaeb423");

  List<SpanData.TimedEvent<Annotation>> events = data.get(0).getAnnotations().getEvents();
  assertThat(events.size()).isEqualTo(1);
  assertThat(events.get(0).getEvent().getDescription()).isEqualTo(sql);
}
 

@Test
public void sqlQuery() throws Exception {
  // When
  String sql = "select 2";
  Sample sample = (Sample) context.getBean("sample");
  sample.executeQuery(sql);

  // Then
  List<SpanData> data = handler.waitForExport(1);
  assertThat(data).isNotNull();
  assertThat(data.size()).isEqualTo(1);
  assertThat(data.get(0).getName()).isEqualTo("executeQuery-4705ea0e");

  SpanData.TimedEvents<Annotation> annotations = data.get(0).getAnnotations();
  List<SpanData.TimedEvent<Annotation>> events = annotations.getEvents();
  assertThat(events.size()).isEqualTo(1);
  assertThat(events.get(0).getEvent().getDescription()).isEqualTo(sql);
}
 

private static String renderAnnotation(Annotation annotation) {
  StringBuilder stringBuilder = new StringBuilder();
  stringBuilder.append(annotation.getDescription());
  if (!annotation.getAttributes().isEmpty()) {
    stringBuilder.append(" ");
    stringBuilder.append(renderAttributes(annotation.getAttributes()));
  }
  return stringBuilder.toString();
}
 

@GuardedBy("this")
private TraceEvents<EventWithNanoTime<Annotation>> getInitializedAnnotations() {
  if (annotations == null) {
    annotations =
        new TraceEvents<EventWithNanoTime<Annotation>>(traceParams.getMaxNumberOfAnnotations());
  }
  return annotations;
}
 

@Test
public void noEventsRecordedAfterEnd() {
  RecordEventsSpanImpl span =
      RecordEventsSpanImpl.startSpan(
          spanContext,
          SPAN_NAME,
          null,
          parentSpanId,
          false,
          TraceParams.DEFAULT,
          startEndHandler,
          timestampConverter,
          testClock);
  span.end();
  // Check that adding trace events after Span#end() does not throw any exception and are not
  // recorded.
  span.putAttributes(attributes);
  span.putAttribute(
      "MySingleStringAttributeKey",
      AttributeValue.stringAttributeValue("MySingleStringAttributeValue"));
  span.addAnnotation(Annotation.fromDescription(ANNOTATION_DESCRIPTION));
  span.addAnnotation(ANNOTATION_DESCRIPTION, attributes);
  span.addNetworkEvent(
      NetworkEvent.builder(NetworkEvent.Type.RECV, 1).setUncompressedMessageSize(3).build());
  span.addLink(Link.fromSpanContext(spanContext, Link.Type.CHILD_LINKED_SPAN));
  SpanData spanData = span.toSpanData();
  assertThat(spanData.getStartTimestamp()).isEqualTo(timestamp);
  assertThat(spanData.getAttributes().getAttributeMap()).isEmpty();
  assertThat(spanData.getAnnotations().getEvents()).isEmpty();
  assertThat(spanData.getNetworkEvents().getEvents()).isEmpty();
  assertThat(spanData.getLinks().getLinks()).isEmpty();
  assertThat(spanData.getStatus()).isEqualTo(Status.OK);
  assertThat(spanData.getEndTimestamp()).isEqualTo(timestamp);
}
 

@Test
public void droppingAnnotations() {
  final int maxNumberOfAnnotations = 8;
  TraceParams traceParams =
      TraceParams.DEFAULT.toBuilder().setMaxNumberOfAnnotations(maxNumberOfAnnotations).build();
  RecordEventsSpanImpl span =
      RecordEventsSpanImpl.startSpan(
          spanContext,
          SPAN_NAME,
          null,
          parentSpanId,
          false,
          traceParams,
          startEndHandler,
          timestampConverter,
          testClock);
  Annotation annotation = Annotation.fromDescription(ANNOTATION_DESCRIPTION);
  for (int i = 0; i < 2 * maxNumberOfAnnotations; i++) {
    span.addAnnotation(annotation);
    testClock.advanceTime(Duration.create(0, 100));
  }
  SpanData spanData = span.toSpanData();
  assertThat(spanData.getAnnotations().getDroppedEventsCount()).isEqualTo(maxNumberOfAnnotations);
  assertThat(spanData.getAnnotations().getEvents().size()).isEqualTo(maxNumberOfAnnotations);
  for (int i = 0; i < maxNumberOfAnnotations; i++) {
    assertThat(spanData.getAnnotations().getEvents().get(i).getTimestamp())
        .isEqualTo(timestamp.addNanos(100L * (maxNumberOfAnnotations + i)));
    assertThat(spanData.getAnnotations().getEvents().get(i).getEvent()).isEqualTo(annotation);
  }
  span.end();
  spanData = span.toSpanData();
  assertThat(spanData.getAnnotations().getDroppedEventsCount()).isEqualTo(maxNumberOfAnnotations);
  assertThat(spanData.getAnnotations().getEvents().size()).isEqualTo(maxNumberOfAnnotations);
  for (int i = 0; i < maxNumberOfAnnotations; i++) {
    assertThat(spanData.getAnnotations().getEvents().get(i).getTimestamp())
        .isEqualTo(timestamp.addNanos(100L * (maxNumberOfAnnotations + i)));
    assertThat(spanData.getAnnotations().getEvents().get(i).getEvent()).isEqualTo(annotation);
  }
}
 

@Test
public void doNotCrash() {
  Map<String, AttributeValue> attributes = new HashMap<String, AttributeValue>();
  attributes.put(
      "MyStringAttributeKey", AttributeValue.stringAttributeValue("MyStringAttributeValue"));
  Map<String, AttributeValue> multipleAttributes = new HashMap<String, AttributeValue>();
  multipleAttributes.put(
      "MyStringAttributeKey", AttributeValue.stringAttributeValue("MyStringAttributeValue"));
  multipleAttributes.put("MyBooleanAttributeKey", AttributeValue.booleanAttributeValue(true));
  multipleAttributes.put("MyLongAttributeKey", AttributeValue.longAttributeValue(123));
  // Tests only that all the methods are not crashing/throwing errors.
  noRecordEventsSpan.putAttribute(
      "MyStringAttributeKey2", AttributeValue.stringAttributeValue("MyStringAttributeValue2"));
  noRecordEventsSpan.addAttributes(attributes);
  noRecordEventsSpan.addAttributes(multipleAttributes);
  noRecordEventsSpan.addAnnotation("MyAnnotation");
  noRecordEventsSpan.addAnnotation("MyAnnotation", attributes);
  noRecordEventsSpan.addAnnotation("MyAnnotation", multipleAttributes);
  noRecordEventsSpan.addAnnotation(Annotation.fromDescription("MyAnnotation"));
  noRecordEventsSpan.addNetworkEvent(NetworkEvent.builder(NetworkEvent.Type.SENT, 1L).build());
  noRecordEventsSpan.addMessageEvent(MessageEvent.builder(MessageEvent.Type.SENT, 1L).build());
  noRecordEventsSpan.addLink(
      Link.fromSpanContext(SpanContext.INVALID, Link.Type.CHILD_LINKED_SPAN));
  noRecordEventsSpan.setStatus(Status.OK);
  noRecordEventsSpan.end(EndSpanOptions.DEFAULT);
  noRecordEventsSpan.end();
}
 

private static Annotation getBaseAnnotation() {
  if (isNull(meghanadaAnnotation)) {
    String version = System.getProperty("meghanada-server.version", "");
    String uid = System.getProperty("meghanada-server.uid", "");
    Map<String, AttributeValue> m = new HashMap<>(2);
    m.put("meghanada-server.version", AttributeValue.stringAttributeValue(version));
    m.put("meghanada-server.uid", AttributeValue.stringAttributeValue(uid));
    meghanadaAnnotation = Annotation.fromDescriptionAndAttributes("meghanada properties", m);
  }
  return meghanadaAnnotation;
}
 

private static Span.TimeEvents toTimeEventsProto(
    TimedEvents<Annotation> annotationTimedEvents,
    TimedEvents<io.opencensus.trace.MessageEvent> messageEventTimedEvents) {
  Span.TimeEvents.Builder timeEventsBuilder = Span.TimeEvents.newBuilder();
  timeEventsBuilder.setDroppedAnnotationsCount(annotationTimedEvents.getDroppedEventsCount());
  for (TimedEvent<Annotation> annotation : annotationTimedEvents.getEvents()) {
    timeEventsBuilder.addTimeEvent(toTimeAnnotationProto(annotation));
  }
  timeEventsBuilder.setDroppedMessageEventsCount(messageEventTimedEvents.getDroppedEventsCount());
  for (TimedEvent<io.opencensus.trace.MessageEvent> networkEvent :
      messageEventTimedEvents.getEvents()) {
    timeEventsBuilder.addTimeEvent(toTimeMessageEventProto(networkEvent));
  }
  return timeEventsBuilder.build();
}
 

private static TimeEvent toTimeAnnotationProto(TimedEvent<Annotation> timedEvent) {
  TimeEvent.Builder timeEventBuilder =
      TimeEvent.newBuilder().setTime(toTimestampProto(timedEvent.getTimestamp()));
  Annotation annotation = timedEvent.getEvent();
  timeEventBuilder.setAnnotation(
      TimeEvent.Annotation.newBuilder()
          .setDescription(toTruncatableStringProto(annotation.getDescription()))
          .setAttributes(toAttributesBuilderProto(annotation.getAttributes(), 0))
          .build());
  return timeEventBuilder.build();
}
 

private static Span.TimeEvents toTimeEventsProto(
    TimedEvents<Annotation> annotationTimedEvents,
    TimedEvents<io.opencensus.trace.MessageEvent> messageEventTimedEvents) {
  Span.TimeEvents.Builder timeEventsBuilder = Span.TimeEvents.newBuilder();
  timeEventsBuilder.setDroppedAnnotationsCount(annotationTimedEvents.getDroppedEventsCount());
  for (TimedEvent<Annotation> annotation : annotationTimedEvents.getEvents()) {
    timeEventsBuilder.addTimeEvent(toTimeAnnotationProto(annotation));
  }
  timeEventsBuilder.setDroppedMessageEventsCount(messageEventTimedEvents.getDroppedEventsCount());
  for (TimedEvent<io.opencensus.trace.MessageEvent> networkEvent :
      messageEventTimedEvents.getEvents()) {
    timeEventsBuilder.addTimeEvent(toTimeMessageEventProto(networkEvent));
  }
  return timeEventsBuilder.build();
}
 

private static TimeEvent toTimeAnnotationProto(TimedEvent<Annotation> timedEvent) {
  TimeEvent.Builder timeEventBuilder =
      TimeEvent.newBuilder().setTime(toTimestampProto(timedEvent.getTimestamp()));
  Annotation annotation = timedEvent.getEvent();
  timeEventBuilder.setAnnotation(
      TimeEvent.Annotation.newBuilder()
          .setDescription(toTruncatableStringProto(annotation.getDescription()))
          .setAttributes(toAttributesBuilderProto(annotation.getAttributes(), 0))
          .build());
  return timeEventBuilder.build();
}
 

@Test
public void convertErrorSpanDataToJaegerThriftSpan() throws SenderException {
  long startTime = 1519629870001L;
  long endTime = 1519630148002L;
  String statusMessage = "timeout";
  SpanData spanData =
      SpanData.create(
          sampleSpanContext(),
          SpanId.fromBytes(new byte[] {(byte) 0x7F, FF, FF, FF, FF, FF, FF, FF}),
          true,
          "test",
          Kind.SERVER,
          Timestamp.fromMillis(startTime),
          SpanData.Attributes.create(Collections.<String, AttributeValue>emptyMap(), 0),
          SpanData.TimedEvents.create(Collections.<TimedEvent<Annotation>>emptyList(), 0),
          SpanData.TimedEvents.create(Collections.<TimedEvent<MessageEvent>>emptyList(), 0),
          SpanData.Links.create(Collections.<Link>emptyList(), 0),
          0,
          Status.DEADLINE_EXCEEDED.withDescription(statusMessage),
          Timestamp.fromMillis(endTime));

  handler.export(singletonList(spanData));

  verify(mockSender).send(eq(process), captor.capture());
  List<Span> spans = captor.getValue();

  assertThat(spans.size()).isEqualTo(1);
  Span span = spans.get(0);

  assertThat(span.tags.size()).isEqualTo(3);
  assertThat(span.tags)
      .containsExactly(
          new Tag(JaegerExporterHandler.SPAN_KIND, TagType.STRING).setVStr("server"),
          new Tag(JaegerExporterHandler.STATUS_CODE, TagType.LONG).setVLong(4),
          new Tag(JaegerExporterHandler.STATUS_MESSAGE, TagType.STRING).setVStr(statusMessage));
}
 

private static SpanData.TimedEvent<Annotation> sampleAnnotation() {
  return SpanData.TimedEvent.create(
      Timestamp.create(1519629872L, 987654321),
      Annotation.fromDescriptionAndAttributes(
          "annotation #1",
          ImmutableMap.of(
              "bool", AttributeValue.booleanAttributeValue(true),
              "long", AttributeValue.longAttributeValue(1337L),
              "string",
                  AttributeValue.stringAttributeValue(
                      "Kind words do not cost much. Yet they accomplish much. -- Pascal"))));
}
 

/**
 * Returns an immutable representation of all the data from this {@code Span}.
 *
 * @return an immutable representation of all the data from this {@code Span}.
 * @throws IllegalStateException if the Span doesn't have RECORD_EVENTS option.
 */
public SpanData toSpanData() {
  synchronized (this) {
    SpanData.Attributes attributesSpanData =
        attributes == null
            ? SpanData.Attributes.create(Collections.<String, AttributeValue>emptyMap(), 0)
            : SpanData.Attributes.create(attributes, attributes.getNumberOfDroppedAttributes());
    SpanData.TimedEvents<Annotation> annotationsSpanData =
        createTimedEvents(getInitializedAnnotations(), timestampConverter);
    SpanData.TimedEvents<io.opencensus.trace.MessageEvent> messageEventsSpanData =
        createTimedEvents(getInitializedNetworkEvents(), timestampConverter);
    SpanData.Links linksSpanData =
        links == null
            ? SpanData.Links.create(Collections.<Link>emptyList(), 0)
            : SpanData.Links.create(
                new ArrayList<Link>(links.events), links.getNumberOfDroppedEvents());
    return SpanData.create(
        getContext(),
        parentSpanId,
        hasRemoteParent,
        name,
        kind,
        timestampConverter.convertNanoTime(startNanoTime),
        attributesSpanData,
        annotationsSpanData,
        messageEventsSpanData,
        linksSpanData,
        numberOfChildren,
        hasBeenEnded ? getStatusWithDefault() : null,
        hasBeenEnded ? timestampConverter.convertNanoTime(endNanoTime) : null);
  }
}
 

@Override
public void addAnnotation(Annotation annotation) {
  Preconditions.checkNotNull(annotation, "annotation");
  synchronized (this) {
    if (hasBeenEnded) {
      logger.log(Level.FINE, "Calling addAnnotation() on an ended Span.");
      return;
    }
    getInitializedAnnotations()
        .addEvent(new EventWithNanoTime<Annotation>(clock.nowNanos(), annotation));
  }
}
 

/** Create an Annotation. */
@Benchmark
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
public Annotation createAnnotation(Data data) {
  return Annotation.fromDescriptionAndAttributes(ANNOTATION_DESCRIPTION, data.attributeMap);
}
 

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

@Test
public void spanData_AllDataEmpty() {
  SpanData spanData =
      SpanData.create(
          spanContext,
          parentSpanId,
          false,
          SPAN_NAME,
          null,
          startTimestamp,
          Attributes.create(Collections.<String, AttributeValue>emptyMap(), 0),
          TimedEvents.create(Collections.<SpanData.TimedEvent<Annotation>>emptyList(), 0),
          TimedEvents.create(Collections.<SpanData.TimedEvent<MessageEvent>>emptyList(), 0),
          Links.create(Collections.<Link>emptyList(), 0),
          0,
          status,
          endTimestamp);
  assertThat(spanData.getContext()).isEqualTo(spanContext);
  assertThat(spanData.getParentSpanId()).isEqualTo(parentSpanId);
  assertThat(spanData.getHasRemoteParent()).isFalse();
  assertThat(spanData.getName()).isEqualTo(SPAN_NAME);
  assertThat(spanData.getStartTimestamp()).isEqualTo(startTimestamp);
  assertThat(spanData.getAttributes().getAttributeMap().isEmpty()).isTrue();
  assertThat(spanData.getAnnotations().getEvents().isEmpty()).isTrue();
  assertThat(spanData.getNetworkEvents().getEvents().isEmpty()).isTrue();
  assertThat(spanData.getMessageEvents().getEvents().isEmpty()).isTrue();
  assertThat(spanData.getLinks().getLinks().isEmpty()).isTrue();
  assertThat(spanData.getChildSpanCount()).isEqualTo(0);
  assertThat(spanData.getStatus()).isEqualTo(status);
  assertThat(spanData.getEndTimestamp()).isEqualTo(endTimestamp);
}
 

public static void setStatusINTERNAL(String message) {
  // add error info annotation
  Span current = tracer.getCurrentSpan();
  current.addAnnotation(getBaseAnnotation());
  HashMap<String, AttributeValue> newMap = new HashMap<>(javaAttributeMap);
  newMap.put("java.vm.memory", AttributeValue.stringAttributeValue(Config.getMemoryString()));
  Annotation vmAnno = Annotation.fromDescriptionAndAttributes("java.vm properties", newMap);
  current.addAnnotation(vmAnno);
  Annotation osAnno = Annotation.fromDescriptionAndAttributes("os properties", osAttributeMap);
  current.addAnnotation(osAnno);
  TelemetryUtils.setStatus(Status.INTERNAL.withDescription(message));
}
 

/**
 * Returns a new immutable {@code SpanData}.
 *
 * @deprecated Use {@link #create(SpanContext, SpanId, Boolean, String, Kind, Timestamp,
 *     Attributes, TimedEvents, TimedEvents, Links, Integer, Status, Timestamp)}.
 */
@Deprecated
public static SpanData create(
    SpanContext context,
    @Nullable SpanId parentSpanId,
    @Nullable Boolean hasRemoteParent,
    String name,
    Timestamp startTimestamp,
    Attributes attributes,
    TimedEvents<Annotation> annotations,
    TimedEvents<? extends io.opencensus.trace.BaseMessageEvent> messageOrNetworkEvents,
    Links links,
    @Nullable Integer childSpanCount,
    @Nullable Status status,
    @Nullable Timestamp endTimestamp) {
  return create(
      context,
      parentSpanId,
      hasRemoteParent,
      name,
      null,
      startTimestamp,
      attributes,
      annotations,
      messageOrNetworkEvents,
      links,
      childSpanCount,
      status,
      endTimestamp);
}
 

@Override
public void addAnnotation(Annotation annotation) {}
 

@SuppressWarnings("deprecation")
static Span generateSpan(SpanData spanData, Endpoint localEndpoint) {
  SpanContext context = spanData.getContext();
  long startTimestamp = toEpochMicros(spanData.getStartTimestamp());

  // TODO(sebright): Fix the Checker Framework warning.
  @SuppressWarnings("nullness")
  long endTimestamp = toEpochMicros(spanData.getEndTimestamp());

  // TODO(bdrutu): Fix the Checker Framework warning.
  @SuppressWarnings("nullness")
  Span.Builder spanBuilder =
      Span.newBuilder()
          .traceId(context.getTraceId().toLowerBase16())
          .id(context.getSpanId().toLowerBase16())
          .kind(toSpanKind(spanData))
          .name(spanData.getName())
          .timestamp(toEpochMicros(spanData.getStartTimestamp()))
          .duration(endTimestamp - startTimestamp)
          .localEndpoint(localEndpoint);

  if (spanData.getParentSpanId() != null && spanData.getParentSpanId().isValid()) {
    spanBuilder.parentId(spanData.getParentSpanId().toLowerBase16());
  }

  for (Map.Entry<String, AttributeValue> label :
      spanData.getAttributes().getAttributeMap().entrySet()) {
    spanBuilder.putTag(label.getKey(), attributeValueToString(label.getValue()));
  }
  Status status = spanData.getStatus();
  if (status != null) {
    spanBuilder.putTag(STATUS_CODE, status.getCanonicalCode().toString());
    if (status.getDescription() != null) {
      spanBuilder.putTag(STATUS_DESCRIPTION, status.getDescription());
    }
    if (!status.isOk()) {
      spanBuilder.putTag(STATUS_ERROR, status.getCanonicalCode().toString());
    }
  }

  for (TimedEvent<Annotation> annotation : spanData.getAnnotations().getEvents()) {
    spanBuilder.addAnnotation(
        toEpochMicros(annotation.getTimestamp()), annotation.getEvent().getDescription());
  }

  for (TimedEvent<io.opencensus.trace.MessageEvent> messageEvent :
      spanData.getMessageEvents().getEvents()) {
    spanBuilder.addAnnotation(
        toEpochMicros(messageEvent.getTimestamp()), messageEvent.getEvent().getType().name());
  }

  return spanBuilder.build();
}
 

@Override
public void addAnnotation(Annotation annotation) {}
 

private static void addAnnotaion(Annotation annotation) {
  Span current = tracer.getCurrentSpan();
  current.addAnnotation(annotation);
}