How to use

WingtipsToZipkinSpanConverter

in

com.nike.wingtips.zipkin2.util

  @Override
  public void spanCompleted(Span span) {
    try {
      zipkin2.Span zipkinSpan = zipkinSpanConverter.convertWingtipsSpanToZipkinSpan(span, zipkinEndpoint);
      zipkinSpanReporter.report(zipkinSpan);
    }
    catch(Throwable ex) {
      long currentBadSpanCount = spanHandlingErrorCounter.incrementAndGet();

      // Only log once every MIN_SPAN_HANDLING_ERROR_LOG_INTERVAL_MILLIS time interval to prevent log spam from a malicious (or broken) caller.
      long currentTimeMillis = System.currentTimeMillis();
      long timeSinceLastLogMsgMillis = currentTimeMillis - lastSpanHandlingErrorLogTimeEpochMillis;
      if (timeSinceLastLogMsgMillis >= MIN_SPAN_HANDLING_ERROR_LOG_INTERVAL_MILLIS) {
        // We're not synchronizing the read and write to lastSpanHandlingErrorLogTimeEpochMillis, and that's ok. If we get a few extra
        //      log messages due to a race condition it's not the end of the world - we're still satisfying the goal of not allowing a
        //      malicious caller to endlessly spam the logs.
        lastSpanHandlingErrorLogTimeEpochMillis = currentTimeMillis;

        zipkinConversionOrReportingErrorLogger.warn(
          "There have been {} spans that were not Zipkin compatible, or that experienced an error during span handling. Latest example: "
          + "wingtips_span_with_error=\"{}\", conversion_or_handling_error=\"{}\"",
          currentBadSpanCount, span.toKeyValueString(), ex.toString());
      }
    }
  }
}

  @Override
  public void spanCompleted(Span span) {
    try {
      zipkin2.Span zipkinSpan = zipkinSpanConverter.convertWingtipsSpanToZipkinSpan(span, zipkinEndpoint);
      zipkinSpanReporter.report(zipkinSpan);
    }
    catch(Throwable ex) {
      long currentBadSpanCount = spanHandlingErrorCounter.incrementAndGet();

      // Only log once every MIN_SPAN_HANDLING_ERROR_LOG_INTERVAL_MILLIS time interval to prevent log spam from a malicious (or broken) caller.
      long currentTimeMillis = System.currentTimeMillis();
      long timeSinceLastLogMsgMillis = currentTimeMillis - lastSpanHandlingErrorLogTimeEpochMillis;
      if (timeSinceLastLogMsgMillis >= MIN_SPAN_HANDLING_ERROR_LOG_INTERVAL_MILLIS) {
        // We're not synchronizing the read and write to lastSpanHandlingErrorLogTimeEpochMillis, and that's ok. If we get a few extra
        //      log messages due to a race condition it's not the end of the world - we're still satisfying the goal of not allowing a
        //      malicious caller to endlessly spam the logs.
        lastSpanHandlingErrorLogTimeEpochMillis = currentTimeMillis;

        zipkinConversionOrReportingErrorLogger.warn(
          "There have been {} spans that were not Zipkin compatible, or that experienced an error during span handling. Latest example: "
          + "wingtips_span_with_error=\"{}\", conversion_or_handling_error=\"{}\"",
          currentBadSpanCount, span.toKeyValueString(), ex.toString());
      }
    }
  }
}

@Test
public void spanCompleted_does_not_propagate_exceptions_generated_by_span_converter() {
  // given
  doThrow(new RuntimeException("kaboom")).when(spanConverterMock).convertWingtipsSpanToZipkinSpan(any(Span.class), any(Endpoint.class));
  // when
  Throwable ex = catchThrowable(() -> listener.spanCompleted(spanMock));
  // then
  verify(spanConverterMock).convertWingtipsSpanToZipkinSpan(spanMock, listener.zipkinEndpoint);
  verifyZeroInteractions(spanReporterMock);
  assertThat(ex).isNull();
}

@Test
public void spanCompleted_converts_to_zipkin_span_and_passes_it_to_zipkinSpanReporter() {
  // given
  zipkin2.Span zipkinSpan = zipkin2.Span.newBuilder().traceId("42").id("4242").name("foo").build();
  doReturn(zipkinSpan).when(spanConverterMock).convertWingtipsSpanToZipkinSpan(any(Span.class), any(Endpoint.class));
  // when
  listener.spanCompleted(spanMock);
  // then
  verify(spanConverterMock).convertWingtipsSpanToZipkinSpan(spanMock, listener.zipkinEndpoint);
  verify(spanReporterMock).report(zipkinSpan);
}