42 lines
1.3 KiB
Java
42 lines
1.3 KiB
Java
package com.example.javaagent;
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import io.opentelemetry.api.common.Attributes;
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import io.opentelemetry.api.trace.SpanKind;
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import io.opentelemetry.context.Context;
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import io.opentelemetry.sdk.trace.data.LinkData;
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import io.opentelemetry.sdk.trace.samplers.Sampler;
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import io.opentelemetry.sdk.trace.samplers.SamplingDecision;
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import io.opentelemetry.sdk.trace.samplers.SamplingResult;
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import java.util.List;
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/**
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* This demo sampler filters out all internal spans whose name contains string "greeting".
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*
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* <p>See <a
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* href="https://github.com/open-telemetry/opentelemetry-specification/blob/master/specification/trace/sdk.md#sampling">
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* OpenTelemetry Specification</a> for more information about span sampling.
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*
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* @see DemoSdkTracerProviderConfigurer
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*/
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public class DemoSampler implements Sampler {
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@Override
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public SamplingResult shouldSample(
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Context parentContext,
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String traceId,
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String name,
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SpanKind spanKind,
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Attributes attributes,
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List<LinkData> parentLinks) {
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if (spanKind == SpanKind.INTERNAL && name.contains("greeting")) {
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return SamplingResult.create(SamplingDecision.DROP);
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} else {
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return SamplingResult.create(SamplingDecision.RECORD_AND_SAMPLE);
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}
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}
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@Override
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public String getDescription() {
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return "DemoSampler";
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}
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}
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