io.opencensus.trace.SpanId Java Examples

@Test
public void enhanceLogEntry_AddSampledSpanToLogEntry() {
  LogEntry logEntry =
      getEnhancedLogEntry(
          new OpenCensusTraceLoggingEnhancer("my-test-project-3"),
          new TestSpan(
              SpanContext.create(
                  TraceId.fromLowerBase16("4c6af40c499951eb7de2777ba1e4fefa"),
                  SpanId.fromLowerBase16("de52e84d13dd232d"),
                  TraceOptions.builder().setIsSampled(true).build(),
                  EMPTY_TRACESTATE)));
  assertTrue(logEntry.getTraceSampled());
  assertThat(logEntry.getTrace())
      .isEqualTo("projects/my-test-project-3/traces/4c6af40c499951eb7de2777ba1e4fefa");
  assertThat(logEntry.getSpanId()).isEqualTo("de52e84d13dd232d");
}
 

private static void assertSamplerSamplesWithProbability(
    Sampler sampler, SpanContext parent, List<Span> parentLinks, double probability) {
  Random random = new Random(1234);
  int count = 0; // Count of spans with sampling enabled
  for (int i = 0; i < NUM_SAMPLE_TRIES; i++) {
    if (sampler.shouldSample(
        parent,
        false,
        TraceId.generateRandomId(random),
        SpanId.generateRandomId(random),
        SPAN_NAME,
        parentLinks)) {
      count++;
    }
  }
  double proportionSampled = (double) count / NUM_SAMPLE_TRIES;
  // Allow for a large amount of slop (+/- 10%) in number of sampled traces, to avoid flakiness.
  assertThat(proportionSampled < probability + 0.1 && proportionSampled > probability - 0.1)
      .isTrue();
}
 

private static List<Link> sampleLinks() {
  return Lists.newArrayList(
      Link.fromSpanContext(
          SpanContext.create(
              TraceId.fromBytes(
                  new byte[] {FF, FF, FF, FF, FF, FF, FF, FF, FF, FF, FF, FF, FF, FF, FF, 0}),
              SpanId.fromBytes(new byte[] {0, 0, 0, 0, 0, 0, 2, 0}),
              TraceOptions.builder().setIsSampled(false).build(),
              Tracestate.builder().build()),
          Link.Type.CHILD_LINKED_SPAN,
          ImmutableMap.of(
              "Bool", AttributeValue.booleanAttributeValue(true),
              "Long", AttributeValue.longAttributeValue(299792458L),
              "String",
                  AttributeValue.stringAttributeValue(
                      "Man is condemned to be free; because once thrown into the world, "
                          + "he is responsible for everything he does. -- Sartre"))));
}
 

@Test
public void testSpan () throws Exception {

  Random random = new Random(1234);
  SpanId generateSpanId = SpanId.generateRandomId(random);
  String spanId = UnsignedLongs.toString(spanIdToLong(generateSpanId));
  String traceId = TraceId.generateRandomId(random).toLowerBase16();

  final List<String> headers = new ArrayList<>();
  headers.add(traceId + "/" + spanId + ";o=1");
  doReturn(headers).when(request).getRequestHeader("X-Cloud-Trace-Context");

  final SpanContext spanContext = textFormat.extract(request, textFormatGetter);

  assertEquals(generateSpanId, spanContext.getSpanId());
}
 

private void initAttributes() {
  attributeValues = createAttributeValues(size);
  attributeKeys = new String[size];
  attributeMap = new HashMap<>(size);
  messageEvents = new MessageEvent[size];
  links = new Link[size];
  for (int i = 0; i < size; i++) {
    attributeKeys[i] = ATTRIBUTE_KEY + "-i";
    attributeMap.put(attributeKeys[i], attributeValues[i]);
    messageEvents[i] = MessageEvent.builder(MessageEvent.Type.SENT, MESSAGE_ID + i).build();
    links[i] =
        Link.fromSpanContext(
            SpanContext.create(
                TraceId.fromBytes(
                    new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, (byte) i}),
                SpanId.fromBytes(new byte[] {1, 2, 3, 4, 5, 6, 7, (byte) i}),
                TraceOptions.DEFAULT,
                TRACESTATE_DEFAULT),
            Link.Type.PARENT_LINKED_SPAN);
  }
}
 

@Before
public void setUp() {
  SpanData spanData =
      SpanData.create(
          SpanContext.create(
              TraceId.fromLowerBase16(SAMPLE_TRACE_ID),
              SpanId.fromLowerBase16(SAMPLE_SPAN_ID),
              SAMPLE_TRACE_OPTION,
              SAMPLE_TRACE_STATE),
          SpanId.fromLowerBase16(SAMPLE_PARENT_SPAN_ID),
          true,
          "SpanName",
          null,
          Timestamp.create(155196336, 194009601),
          Attributes.create(attributes, 0),
          TimedEvents.create(annotations, 0),
          TimedEvents.create(messageEvents, 0),
          Links.create(Collections.<Link>emptyList(), 0),
          null,
          Status.OK,
          Timestamp.create(155296336, 465726528));

  spanDataList = new ArrayList<SpanData>();
  spanDataList.add(spanData);
}
 

private RecordEventsSpanImpl(
    SpanContext context,
    String name,
    @Nullable Kind kind,
    @Nullable SpanId parentSpanId,
    @Nullable Boolean hasRemoteParent,
    TraceParams traceParams,
    StartEndHandler startEndHandler,
    @Nullable TimestampConverter timestampConverter,
    Clock clock) {
  super(context, RECORD_EVENTS_SPAN_OPTIONS);
  this.parentSpanId = parentSpanId;
  this.hasRemoteParent = hasRemoteParent;
  this.name = name;
  this.kind = kind;
  this.traceParams = traceParams;
  this.startEndHandler = startEndHandler;
  this.clock = clock;
  this.hasBeenEnded = false;
  this.sampleToLocalSpanStore = false;
  this.numberOfChildren = 0;
  this.timestampConverter =
      timestampConverter != null ? timestampConverter : TimestampConverter.now(clock);
  startNanoTime = clock.nowNanos();
}
 

@Test
public void generateSpan_NullStatus() {
  SpanData data =
      SpanData.create(
          SpanContext.create(
              TraceId.fromLowerBase16(TRACE_ID),
              SpanId.fromLowerBase16(SPAN_ID),
              TraceOptions.builder().setIsSampled(true).build()),
          SpanId.fromLowerBase16(PARENT_SPAN_ID),
          true, /* hasRemoteParent */
          "SpanName", /* name */
          null, /* kind */
          Timestamp.create(1505855794, 194009601) /* startTimestamp */,
          Attributes.create(attributes, 0 /* droppedAttributesCount */),
          TimedEvents.create(annotations, 0 /* droppedEventsCount */),
          TimedEvents.create(messageEvents, 0 /* droppedEventsCount */),
          Links.create(Collections.<Link>emptyList(), 0 /* droppedLinksCount */),
          null, /* childSpanCount */
          null, /* status */
          Timestamp.create(1505855799, 465726528) /* endTimestamp */);

  assertThat(InstanaExporterHandler.convertToJson(Collections.singletonList(data)))
      .isEqualTo("[]");
}
 

private RecordEventsSpanImpl createSpan(String spanName) {
  final SpanContext spanContext =
      SpanContext.create(
          TraceId.generateRandomId(random),
          SpanId.generateRandomId(random),
          TraceOptions.DEFAULT,
          Tracestate.builder().build());
  return RecordEventsSpanImpl.startSpan(
      spanContext,
      spanName,
      null,
      SpanId.generateRandomId(random),
      false,
      TraceParams.DEFAULT,
      startEndHandler,
      null,
      MillisClock.getInstance());
}
 

/**
 * Converts AppEngine {@code CloudTraceContext} to {@code SpanContext}.
 *
 * @param cloudTraceContext the AppEngine {@code CloudTraceContext}.
 * @return the converted {@code SpanContext}.
 * @since 0.14
 */
public static SpanContext fromCloudTraceContext(CloudTraceContext cloudTraceContext) {
  checkNotNull(cloudTraceContext, "cloudTraceContext");

  try {
    // Extract the trace ID from the binary protobuf CloudTraceContext#traceId.
    TraceIdProto traceIdProto = TraceIdProto.parseFrom(cloudTraceContext.getTraceId());
    ByteBuffer traceIdBuf = ByteBuffer.allocate(TraceId.SIZE);
    traceIdBuf.putLong(traceIdProto.getHi());
    traceIdBuf.putLong(traceIdProto.getLo());
    ByteBuffer spanIdBuf = ByteBuffer.allocate(SpanId.SIZE);
    spanIdBuf.putLong(cloudTraceContext.getSpanId());

    return SpanContext.create(
        TraceId.fromBytes(traceIdBuf.array()),
        SpanId.fromBytes(spanIdBuf.array()),
        TraceOptions.builder().setIsSampled(cloudTraceContext.isTraceEnabled()).build(),
        TRACESTATE_DEFAULT);
  } catch (com.google.protobuf.InvalidProtocolBufferException e) {
    throw new RuntimeException(e);
  }
}
 

@Test
public void preserveOtherKeyValuePairs() {
  String log =
      logWithSpanAndLog4jConfiguration(
          "%X{traceId} %X{myTestKey} %-5level - %msg",
          SpanContext.create(
              TraceId.fromLowerBase16("c95329bb6b7de41afbc51a231c128f97"),
              SpanId.fromLowerBase16("bf22ea74d38eddad"),
              TraceOptions.builder().setIsSampled(true).build(),
              EMPTY_TRACESTATE),
          new Function<Logger, Void>() {
            @Override
            public Void apply(Logger logger) {
              String key = "myTestKey";
              ThreadContext.put(key, "myTestValue");
              try {
                logger.error("message #4");
              } finally {
                ThreadContext.remove(key);
              }
              return null;
            }
          });
  assertThat(log).isEqualTo("c95329bb6b7de41afbc51a231c128f97 myTestValue ERROR - message #4");
}
 

@Test
public void startRemoteSpan() {
  SpanContext spanContext =
      SpanContext.create(
          TraceId.generateRandomId(randomHandler.current()),
          SpanId.generateRandomId(randomHandler.current()),
          TraceOptions.DEFAULT);
  RecordEventsSpanImpl span =
      (RecordEventsSpanImpl)
          SpanBuilderImpl.createWithRemoteParent(SPAN_NAME, spanContext, spanBuilderOptions)
              .setRecordEvents(true)
              .startSpan();
  assertThat(span.getContext().isValid()).isTrue();
  assertThat(span.getContext().getTraceId()).isEqualTo(spanContext.getTraceId());
  assertThat(span.getContext().getTraceOptions().isSampled()).isTrue();
  SpanData spanData = span.toSpanData();
  assertThat(spanData.getParentSpanId()).isEqualTo(spanContext.getSpanId());
  assertThat(spanData.getHasRemoteParent()).isTrue();
}
 

@Test
public void addNonSampledSpanToLogEntryWithAllSpans() {
  String log =
      logWithSpanAndLog4jConfiguration(
          TEST_PATTERN,
          SpanContext.create(
              TraceId.fromLowerBase16("cd7061dfa9d312cdcc42edab3feab51b"),
              SpanId.fromLowerBase16("117d42d4c7acd066"),
              TraceOptions.builder().setIsSampled(false).build(),
              EMPTY_TRACESTATE),
          new Function<Logger, Void>() {
            @Override
            public Void apply(Logger logger) {
              logger.info("message #2");
              return null;
            }
          });
  assertThat(log)
      .isEqualTo(
          "traceId=cd7061dfa9d312cdcc42edab3feab51b spanId=117d42d4c7acd066 sampled=false INFO  "
              + "- message #2");
}
 

@Test
public void addSampledSpanToLogEntryWithAllSpans() {
  String log =
      logWithSpanAndLog4jConfiguration(
          TEST_PATTERN,
          SpanContext.create(
              TraceId.fromLowerBase16("b9718fe3d82d36fce0e6a1ada1c21db0"),
              SpanId.fromLowerBase16("75159dde8c503fee"),
              TraceOptions.builder().setIsSampled(true).build(),
              EMPTY_TRACESTATE),
          new Function<Logger, Void>() {
            @Override
            public Void apply(Logger logger) {
              logger.warn("message #1");
              return null;
            }
          });
  assertThat(log)
      .isEqualTo(
          "traceId=b9718fe3d82d36fce0e6a1ada1c21db0 spanId=75159dde8c503fee "
              + "sampled=true WARN  - message #1");
}
 

@Test
public void enhanceLogEntry_AddNonSampledSpanToLogEntry() {
  LogEntry logEntry =
      getEnhancedLogEntry(
          new OpenCensusTraceLoggingEnhancer("my-test-project-6"),
          new TestSpan(
              SpanContext.create(
                  TraceId.fromLowerBase16("72c905c76f99e99974afd84dc053a480"),
                  SpanId.fromLowerBase16("731e102335b7a5a0"),
                  TraceOptions.builder().setIsSampled(false).build(),
                  EMPTY_TRACESTATE)));
  assertFalse(logEntry.getTraceSampled());
  assertThat(logEntry.getTrace())
      .isEqualTo("projects/my-test-project-6/traces/72c905c76f99e99974afd84dc053a480");
  assertThat(logEntry.getSpanId()).isEqualTo("731e102335b7a5a0");
}
 

private static boolean makeSamplingDecision(
    @Nullable SpanContext parent,
    @Nullable Boolean hasRemoteParent,
    String name,
    @Nullable Sampler sampler,
    List<Span> parentLinks,
    TraceId traceId,
    SpanId spanId,
    TraceParams activeTraceParams) {
  // If users set a specific sampler in the SpanBuilder, use it.
  if (sampler != null) {
    return sampler.shouldSample(parent, hasRemoteParent, traceId, spanId, name, parentLinks);
  }
  // Use the default sampler if this is a root Span or this is an entry point Span (has remote
  // parent).
  if (Boolean.TRUE.equals(hasRemoteParent) || parent == null || !parent.isValid()) {
    return activeTraceParams
        .getSampler()
        .shouldSample(parent, hasRemoteParent, traceId, spanId, name, parentLinks);
  }
  // Parent is always different than null because otherwise we use the default sampler.
  return parent.getTraceOptions().isSampled() || isAnyParentLinkSampled(parentLinks);
}
 

@Test
public void generateSpan_NoKindAndRemoteParent() {
  SpanData data =
      SpanData.create(
          SpanContext.create(
              TraceId.fromLowerBase16(TRACE_ID),
              SpanId.fromLowerBase16(SPAN_ID),
              TraceOptions.builder().setIsSampled(true).build()),
          SpanId.fromLowerBase16(PARENT_SPAN_ID),
          true, /* hasRemoteParent */
          "SpanName", /* name */
          null, /* kind */
          Timestamp.create(1505855794, 194009601) /* startTimestamp */,
          Attributes.create(attributes, 0 /* droppedAttributesCount */),
          TimedEvents.create(annotations, 0 /* droppedEventsCount */),
          TimedEvents.create(messageEvents, 0 /* droppedEventsCount */),
          Links.create(Collections.<Link>emptyList(), 0 /* droppedLinksCount */),
          null, /* childSpanCount */
          Status.OK,
          Timestamp.create(1505855799, 465726528) /* endTimestamp */);

  assertThat(InstanaExporterHandler.convertToJson(Collections.singletonList(data)))
      .isEqualTo(
          "["
              + "{"
              + "\"spanId\":\"9cc1e3049173be09\","
              + "\"traceId\":\"d239036e7d5cec11\","
              + "\"parentId\":\"8b03ab423da481c5\","
              + "\"timestamp\":1505855794194,"
              + "\"duration\":5271,"
              + "\"name\":\"SpanName\","
              + "\"type\":\"ENTRY\","
              + "\"data\":"
              + "{\"http.url\":\"http://localhost/foo\"}"
              + "}"
              + "]");
}
 

@Test
public void generateSpan_ServerKind() {
  SpanData data =
      SpanData.create(
          SpanContext.create(
              TraceId.fromLowerBase16(TRACE_ID),
              SpanId.fromLowerBase16(SPAN_ID),
              TraceOptions.builder().setIsSampled(true).build()),
          SpanId.fromLowerBase16(PARENT_SPAN_ID),
          true, /* hasRemoteParent */
          "SpanName", /* name */
          Kind.SERVER, /* kind */
          Timestamp.create(1505855794, 194009601) /* startTimestamp */,
          Attributes.create(attributes, 0 /* droppedAttributesCount */),
          TimedEvents.create(annotations, 0 /* droppedEventsCount */),
          TimedEvents.create(messageEvents, 0 /* droppedEventsCount */),
          Links.create(Collections.<Link>emptyList(), 0 /* droppedLinksCount */),
          null, /* childSpanCount */
          Status.OK,
          Timestamp.create(1505855799, 465726528) /* endTimestamp */);

  assertThat(InstanaExporterHandler.convertToJson(Collections.singletonList(data)))
      .isEqualTo(
          "["
              + "{"
              + "\"spanId\":\"9cc1e3049173be09\","
              + "\"traceId\":\"d239036e7d5cec11\","
              + "\"parentId\":\"8b03ab423da481c5\","
              + "\"timestamp\":1505855794194,"
              + "\"duration\":5271,"
              + "\"name\":\"SpanName\","
              + "\"type\":\"ENTRY\","
              + "\"data\":"
              + "{\"http.url\":\"http://localhost/foo\"}"
              + "}"
              + "]");
}
 

/**
 * Creates a MockableSpan with a random trace ID and span ID.
 */
@SuppressWarnings("deprecation")
public static MockableSpan generateRandomSpan(Random random) {
  return new MockableSpan(
      SpanContext.create(
          TraceId.generateRandomId(random),
          SpanId.generateRandomId(random),
          TraceOptions.DEFAULT),
      null);
}
 

@Test
public void generateSpan_ErrorStatus() {
  SpanData data =
      SpanData.create(
          SpanContext.create(
              TraceId.fromLowerBase16(TRACE_ID),
              SpanId.fromLowerBase16(SPAN_ID),
              TraceOptions.builder().setIsSampled(true).build()),
          SpanId.fromLowerBase16(PARENT_SPAN_ID),
          true, /* hasRemoteParent */
          "SpanName", /* name */
          Kind.CLIENT, /* kind */
          Timestamp.create(1505855794, 194009601) /* startTimestamp */,
          Attributes.create(attributes, 0 /* droppedAttributesCount */),
          TimedEvents.create(annotations, 0 /* droppedEventsCount */),
          TimedEvents.create(messageEvents, 0 /* droppedEventsCount */),
          Links.create(Collections.<Link>emptyList(), 0 /* droppedLinksCount */),
          null, /* childSpanCount */
          Status.OUT_OF_RANGE, /* status, any but OK */
          Timestamp.create(1505855799, 465726528) /* endTimestamp */);

  assertThat(InstanaExporterHandler.convertToJson(Collections.singletonList(data)))
      .isEqualTo(
          "["
              + "{"
              + "\"spanId\":\"9cc1e3049173be09\","
              + "\"traceId\":\"d239036e7d5cec11\","
              + "\"parentId\":\"8b03ab423da481c5\","
              + "\"timestamp\":1505855794194,"
              + "\"duration\":5271,"
              + "\"name\":\"SpanName\","
              + "\"type\":\"EXIT\","
              + "\"error\":true,"
              + "\"data\":"
              + "{\"http.url\":\"http://localhost/foo\"}"
              + "}"
              + "]");
}
 

@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 SpanContext sampleSpanContext() {
  return SpanContext.create(
      TraceId.fromBytes(new byte[] {FF, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}),
      SpanId.fromBytes(new byte[] {0, 0, 0, 0, 0, 0, 1, 0}),
      TraceOptions.builder().setIsSampled(true).build(),
      Tracestate.builder().build());
}
 

@Test
public void rawContextDataWithTracingData() {
  OpenCensusTraceContextDataInjector plugin = new OpenCensusTraceContextDataInjector();
  SpanContext spanContext =
      SpanContext.create(
          TraceId.fromLowerBase16("e17944156660f55b8cae5ce3f45d4a40"),
          SpanId.fromLowerBase16("fc3d2ba0d283b66a"),
          TraceOptions.builder().setIsSampled(true).build(),
          EMPTY_TRACESTATE);
  Scope scope = tracer.withSpan(new TestSpan(spanContext));
  try {
    String key = "myTestKey";
    ThreadContext.put(key, "myTestValue");
    try {
      assertThat(plugin.rawContextData().toMap())
          .containsExactly(
              "myTestKey",
              "myTestValue",
              "traceId",
              "e17944156660f55b8cae5ce3f45d4a40",
              "spanId",
              "fc3d2ba0d283b66a",
              "traceSampled",
              "true");
    } finally {
      ThreadContext.remove(key);
    }
  } finally {
    scope.close();
  }
}
 

@Test
public void overwriteExistingTracingKey() {
  String log =
      logWithSpanAndLog4jConfiguration(
          TEST_PATTERN,
          SpanContext.create(
              TraceId.fromLowerBase16("18e4ae44273a0c44e0c9ea4380792c66"),
              SpanId.fromLowerBase16("199a7e16daa000a7"),
              TraceOptions.builder().setIsSampled(true).build(),
              EMPTY_TRACESTATE),
          new Function<Logger, Void>() {
            @Override
            public Void apply(Logger logger) {
              ThreadContext.put(
                  OpenCensusTraceContextDataInjector.TRACE_ID_CONTEXT_KEY, "existingTraceId");
              try {
                logger.error("message #5");
              } finally {
                ThreadContext.remove(OpenCensusTraceContextDataInjector.TRACE_ID_CONTEXT_KEY);
              }
              return null;
            }
          });
  assertThat(log)
      .isEqualTo(
          "traceId=18e4ae44273a0c44e0c9ea4380792c66 spanId=199a7e16daa000a7 "
              + "sampled=true ERROR - message #5");
}
 

@Test
public void generateSpan_ServerKind() {
  SpanData data =
      SpanData.create(
          SpanContext.create(
              TraceId.fromLowerBase16(TRACE_ID),
              SpanId.fromLowerBase16(SPAN_ID),
              TraceOptions.builder().setIsSampled(true).build()),
          // TODO SpanId.fromLowerBase16
          SpanId.fromLowerBase16(PARENT_SPAN_ID),
          true, /* hasRemoteParent */
          "Recv.helloworld.Greeter.SayHello", /* name */
          Kind.SERVER, /* kind */
          Timestamp.create(1505855794, 194009601) /* startTimestamp */,
          Attributes.create(attributes, 0 /* droppedAttributesCount */),
          TimedEvents.create(annotations, 0 /* droppedEventsCount */),
          TimedEvents.create(messageEvents, 0 /* droppedEventsCount */),
          Links.create(Collections.<Link>emptyList(), 0 /* droppedLinksCount */),
          null, /* childSpanCount */
          Status.OK,
          Timestamp.create(1505855799, 465726528) /* endTimestamp */);

  assertThat(ZipkinExporterHandler.generateSpan(data, localEndpoint))
      .isEqualTo(
          Span.newBuilder()
              .traceId(TRACE_ID)
              .parentId(PARENT_SPAN_ID)
              .id(SPAN_ID)
              .kind(Span.Kind.SERVER)
              .name(data.getName())
              .timestamp(1505855794000000L + 194009601L / 1000)
              .duration(
                  (1505855799000000L + 465726528L / 1000)
                      - (1505855794000000L + 194009601L / 1000))
              .localEndpoint(localEndpoint)
              .addAnnotation(1505855799000000L + 433901068L / 1000, "RECEIVED")
              .addAnnotation(1505855799000000L + 459486280L / 1000, "SENT")
              .putTag(ZipkinExporterHandler.STATUS_CODE, "OK")
              .build());
}
 

@Test
public void generateSpan_ClientKind() {
  SpanData data =
      SpanData.create(
          SpanContext.create(
              TraceId.fromLowerBase16(TRACE_ID),
              SpanId.fromLowerBase16(SPAN_ID),
              TraceOptions.builder().setIsSampled(true).build()),
          // TODO SpanId.fromLowerBase16
          SpanId.fromLowerBase16(PARENT_SPAN_ID),
          true, /* hasRemoteParent */
          "Sent.helloworld.Greeter.SayHello", /* name */
          Kind.CLIENT, /* kind */
          Timestamp.create(1505855794, 194009601) /* startTimestamp */,
          Attributes.create(attributes, 0 /* droppedAttributesCount */),
          TimedEvents.create(annotations, 0 /* droppedEventsCount */),
          TimedEvents.create(messageEvents, 0 /* droppedEventsCount */),
          Links.create(Collections.<Link>emptyList(), 0 /* droppedLinksCount */),
          null, /* childSpanCount */
          Status.OK,
          Timestamp.create(1505855799, 465726528) /* endTimestamp */);

  assertThat(ZipkinExporterHandler.generateSpan(data, localEndpoint))
      .isEqualTo(
          Span.newBuilder()
              .traceId(TRACE_ID)
              .parentId(PARENT_SPAN_ID)
              .id(SPAN_ID)
              .kind(Span.Kind.CLIENT)
              .name(data.getName())
              .timestamp(1505855794000000L + 194009601L / 1000)
              .duration(
                  (1505855799000000L + 465726528L / 1000)
                      - (1505855794000000L + 194009601L / 1000))
              .localEndpoint(localEndpoint)
              .addAnnotation(1505855799000000L + 433901068L / 1000, "RECEIVED")
              .addAnnotation(1505855799000000L + 459486280L / 1000, "SENT")
              .putTag(ZipkinExporterHandler.STATUS_CODE, "OK")
              .build());
}
 

private static long convertSpanId(final SpanId spanId) {
  final byte[] bytes = spanId.getBytes();
  long result = 0;
  for (int i = 0; i < Long.SIZE / Byte.SIZE; i++) {
    result <<= Byte.SIZE;
    result |= (bytes[i] & 0xff);
  }
  if (result < 0) {
    return -result;
  }
  return result;
}
 

@Test
public void enhanceLogEntry_ConvertNullProjectIdToEmptyString() {
  LogEntry logEntry =
      getEnhancedLogEntry(
          new OpenCensusTraceLoggingEnhancer(null),
          new TestSpan(
              SpanContext.create(
                  TraceId.fromLowerBase16("bfb4248a24325a905873a1d43001d9a0"),
                  SpanId.fromLowerBase16("6f23f9afd448e272"),
                  TraceOptions.builder().setIsSampled(true).build(),
                  EMPTY_TRACESTATE)));
  assertThat(logEntry.getTrace()).isEqualTo("projects//traces/bfb4248a24325a905873a1d43001d9a0");
}
 

private long spanIdToLong(final @Nullable SpanId spanId) {
  if (spanId == null) {
    return 0L;
  }
  // Attempt to minimise allocations, since SpanId#getBytes currently creates a defensive copy:
  spanId.copyBytesTo(spanIdBuffer, 0);
  return Longs.fromByteArray(spanIdBuffer);
}
 

/**
 * Creates a MockableSpan with a random trace ID and span ID.
 */
@SuppressWarnings("deprecation")
public static MockableSpan generateRandomSpan(Random random) {
  return new MockableSpan(
      SpanContext.create(
          TraceId.generateRandomId(random),
          SpanId.generateRandomId(random),
          TraceOptions.DEFAULT),
      null);
}