如何在 opentelemetry 中排除 urls（健康检查痕迹）

Question

我正在尝试将 spring 引导中的 opentelemetry 与自动检测集成，它正在生成运行状况检查 url。 如何在 opentelemetry 中排除特定的 url

Answer 1

/**
 * This demo sampler filters out all internal spans whose name contains string "greeting".
 *
 * <p>See <a
 * href="https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/sdk.md#sampling">
 * OpenTelemetry Specification</a> for more information about span sampling.
 *
 */
public class MySampler implements Sampler {
  @Override
  public SamplingResult shouldSample(
      Context parentContext,
      String traceId,
      String name,
      SpanKind spanKind,
      Attributes attributes,
      List<LinkData> parentLinks) {
      String attr =  attributes.get(InternalAttributeKeyImpl.create("http.target", AttributeType.STRING));

    if(name.contains("health"))
    {
      return SamplingResult.create(SamplingDecision.DROP);
    } else if(spanKind == SpanKind.INTERNAL && name.contains("OperationHandler.handle"))
    {
      return SamplingResult.create(SamplingDecision.DROP);
    } else if (spanKind == SpanKind.SERVER &&
            (attr != null && attr.contains("actuator"))) {
      return SamplingResult.create(SamplingDecision.DROP);
    } else {
      return SamplingResult.create(SamplingDecision.RECORD_AND_SAMPLE);
    }
  }

  @Override
  public String getDescription() {
    return "MySampler";
  }
}




/**
 * This is one of the main entry points for Instrumentation Agent's customizations. It allows
 * configuring the {@link AutoConfigurationCustomizer}. See the {@link
 * #customize(AutoConfigurationCustomizer)} method below.
 *
 * <p>Also see https://github.com/open-telemetry/opentelemetry-java/issues/2022
 *
 * @see AutoConfigurationCustomizerProvider
 */
@AutoService(AutoConfigurationCustomizerProvider.class)
public class MyAutoConfigurationCustomizerProvider
        implements AutoConfigurationCustomizerProvider {

    @Override
    public void customize(AutoConfigurationCustomizer autoConfiguration) {
        Resource resourceNew = Resource.getDefault()
                .merge(Resource.create(Attributes.of(ResourceAttributes.SERVICE_INSTANCE_ID, System.getenv("MY_POD_NAME"))))
                .merge(Resource.create(Attributes.of(ResourceAttributes.SERVICE_NAME, System.getenv("DT_RELEASE_PRODUCT"))));

        autoConfiguration.addSamplerCustomizer((sampler, configProperties) -> new MySampler());
        autoConfiguration.addResourceCustomizer((resource, configProperties) -> resourceNew);
    }
}