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<!DOCTYPE html><html class="default" lang="en" data-base=".."><head><meta charset="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>@opentelemetry/sampler-jaeger-remote | OpenTelemetry SDK</title><meta name="description" content="Documentation for OpenTelemetry SDK"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../assets/style.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script defer src="../assets/main.js"></script><script async src="../assets/icons.js" id="tsd-icons-script"></script><script async src="../assets/search.js" id="tsd-search-script"></script><script async src="../assets/navigation.js" id="tsd-nav-script"></script><script async src="../assets/hierarchy.js" id="tsd-hierarchy-script"></script></head><body><script>document.documentElement.dataset.theme = localStorage.getItem("tsd-theme") || "os";document.body.style.display="none";setTimeout(() => app?app.showPage():document.body.style.removeProperty("display"),500)</script><header class="tsd-page-toolbar"><div class="tsd-toolbar-contents container"><div class="table-cell" id="tsd-search"><div class="field"><label for="tsd-search-field" class="tsd-widget tsd-toolbar-icon search no-caption"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-search"></use></svg></label><input type="text" id="tsd-search-field" aria-label="Search"/></div><div class="field"><div id="tsd-toolbar-links"></div></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">OpenTelemetry SDK</a></div><div class="table-cell" id="tsd-widgets"><a href="#" class="tsd-widget tsd-toolbar-icon menu no-caption" data-toggle="menu" aria-label="Menu"><svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-menu"></use></svg></a></div></div></header><div class="container container-main"><div class="col-content"><div class="tsd-page-title"><ul class="tsd-breadcrumb"><li><a href="../index.html">OpenTelemetry SDK</a></li><li><a href="_opentelemetry_sampler-jaeger-remote.html">@opentelemetry/sampler-jaeger-remote</a></li></ul><h1>Module @opentelemetry/sampler-jaeger-remote</h1></div><section class="tsd-panel tsd-typography"><a id="jaeger-remote-sampler" class="tsd-anchor"></a><h1 class="tsd-anchor-link">Jaeger Remote Sampler<a href="#jaeger-remote-sampler" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h1><p><a href="https://www.npmjs.com/package/@opentelemetry/sampler-jaeger-remote"><img src="https://badge.fury.io/js/%40opentelemetry%2Fsampler-jaeger-remote.svg" alt="NPM Published Version"></a>
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<a href="https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat"><img src="https://img.shields.io/badge/license-Apache_2.0-green.svg?style=flat" alt="Apache License"></a></p>
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<p><strong>Note: This is an experimental package under active development. Minor releases may include breaking changes.</strong></p>
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<p>The Jaeger Remote Sampler package is designed for OpenTelemetry to dynamically fetch and update sampling strategies from a Jaeger agent or collector. This enables applications to adjust their sampling strategies based on the current configuration provided by Jaeger, optimizing for both performance and observability.</p>
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<a id="installation" class="tsd-anchor"></a><h2 class="tsd-anchor-link">Installation<a href="#installation" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h2><pre><code class="bash"><span class="hl-0">npm</span><span class="hl-1"> </span><span class="hl-2">install</span><span class="hl-1"> </span><span class="hl-3">--save</span><span class="hl-1"> </span><span class="hl-2">@opentelemetry/sampler-jaeger-remote</span>
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</code><button type="button">Copy</button></pre>
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<a id="usage" class="tsd-anchor"></a><h2 class="tsd-anchor-link">Usage<a href="#usage" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h2><p>To integrate the Jaeger Remote Sampler with your application, configure it with the endpoint of your Jaeger agent or collector. The sampler can be set up as follows:</p>
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<pre><code class="javascript"><span class="hl-3">const</span><span class="hl-1"> { </span><span class="hl-4">JaegerRemoteSampler</span><span class="hl-1"> } = </span><span class="hl-0">require</span><span class="hl-1">(</span><span class="hl-2">'@opentelemetry/sampler-jaeger-remote'</span><span class="hl-1">);</span><br/><span class="hl-3">const</span><span class="hl-1"> { </span><span class="hl-4">defaultResource</span><span class="hl-1">, </span><span class="hl-4">resourceFromAttributes</span><span class="hl-1"> } = </span><span class="hl-0">require</span><span class="hl-1">(</span><span class="hl-2">'@opentelemetry/resources'</span><span class="hl-1">);</span><br/><span class="hl-3">const</span><span class="hl-1"> { </span><span class="hl-4">NodeTracerProvider</span><span class="hl-1"> } = </span><span class="hl-0">require</span><span class="hl-1">(</span><span class="hl-2">'@opentelemetry/node'</span><span class="hl-1">);</span><br/><br/><span class="hl-5">// Jaeger agent endpoint</span><br/><span class="hl-3">const</span><span class="hl-1"> </span><span class="hl-4">sampler</span><span class="hl-1"> = </span><span class="hl-3">new</span><span class="hl-1"> </span><span class="hl-0">JaegerRemoteSampler</span><span class="hl-1">({</span><br/><span class="hl-1"> </span><span class="hl-6">endpoint:</span><span class="hl-1"> </span><span class="hl-2">'http://your-jaeger-agent:14268/api/sampling'</span><span class="hl-1">,</span><br/><span class="hl-1"> </span><span class="hl-6">serviceName:</span><span class="hl-1"> </span><span class="hl-2">'your-service-name'</span><span class="hl-1">,</span><br/><span class="hl-1"> </span><span class="hl-6">initialSampler:</span><span class="hl-1"> </span><span class="hl-3">new</span><span class="hl-1"> </span><span class="hl-0">AlwaysOnSampler</span><span class="hl-1">(),</span><br/><span class="hl-1"> </span><span class="hl-6">poolingInterval:</span><span class="hl-1"> </span><span class="hl-9">60000</span><span class="hl-1"> </span><span class="hl-5">// 60 seconds</span><br/><span class="hl-1">});</span><br/><span class="hl-3">const</span><span class="hl-1"> </span><span class="hl-4">provider</span><span class="hl-1"> = </span><span class="hl-3">new</span><span class="hl-1"> </span><span class="hl-0">NodeTracerProvider</span><span class="hl-1">({</span><br/><span class="hl-1"> </span><span class="hl-6">resource:</span><span class="hl-1"> </span><span class="hl-0">defaultResource</span><span class="hl-1">().</span><span class="hl-0">merge</span><span class="hl-1">(</span><span class="hl-0">resourceFromAttributes</span><span class="hl-1">({</span><br/><span class="hl-1"> </span><span class="hl-2">'service.name'</span><span class="hl-6">:</span><span class="hl-1"> </span><span class="hl-2">'your-service-name'</span><br/><span class="hl-1"> })),</span><br/><span class="hl-1"> </span><span class="hl-6">sampler</span><br/><span class="hl-1">});</span><br/><br/><span class="hl-6">provider</span><span class="hl-1">.</span><span class="hl-0">register</span><span class="hl-1">();</span>
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</code><button type="button">Copy</button></pre>
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<a id="supported-configuration-options" class="tsd-anchor"></a><h2 class="tsd-anchor-link">Supported Configuration Options<a href="#supported-configuration-options" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h2><p>The Jaeger Remote Sampler supports the following sampling strategies based on the configuration received from the remote endpoint:</p>
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<ol>
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<li>
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<p><strong>Per-Operation Sampling</strong>: If the remote configuration includes <code>operationSampling</code> with <code>perOperationStrategies</code>, it creates a <code>PerOperationSampler</code>. This allows for different sampling rates for different operations.</p>
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</li>
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<li>
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<p><strong>Probabilistic Sampling</strong>: If the remote configuration specifies <code>StrategyType.PROBABILISTIC</code>, it creates a <code>TraceIdRatioBasedSampler</code>. This samples a percentage of traces based on the trace ID.</p>
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</li>
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<li>
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<p><strong>Default Sampling</strong>: If none of the above apply, it falls back to the initial sampler provided in the constructor.</p>
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</li>
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</ol>
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<a id="useful-links" class="tsd-anchor"></a><h2 class="tsd-anchor-link">Useful links<a href="#useful-links" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h2><ul>
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<li>For more information on OpenTelemetry, visit: <a href="https://opentelemetry.io/">https://opentelemetry.io/</a></li>
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<li>For more about OpenTelemetry JavaScript: <a href="https://github.com/open-telemetry/opentelemetry-js">https://github.com/open-telemetry/opentelemetry-js</a></li>
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<li>For help or feedback on this project, join us in <a href="https://github.com/open-telemetry/opentelemetry-js/discussions">GitHub Discussions</a></li>
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</ul>
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<a id="license" class="tsd-anchor"></a><h2 class="tsd-anchor-link">License<a href="#license" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></h2><p>Apache 2.0 - See <a href="https://github.com/open-telemetry/opentelemetry-js/blob/main/LICENSE">LICENSE</a> for more information.</p>
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</section><details class="tsd-panel-group tsd-member-group tsd-accordion" open><summary class="tsd-accordion-summary" data-key="section-Enumerations"><h2><svg width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg> Enumerations</h2></summary><dl class="tsd-member-summaries"><dt class="tsd-member-summary"><a id="strategytype" class="tsd-anchor"></a><span class="tsd-member-summary-name"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Enumeration"><use href="../assets/icons.svg#icon-8"></use></svg><a href="../enums/_opentelemetry_sampler-jaeger-remote.StrategyType.html">StrategyType</a><a href="#strategytype" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></span></dt><dd class="tsd-member-summary"></dd></dl></details><details class="tsd-panel-group tsd-member-group tsd-accordion" open><summary 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width="20" height="20" viewBox="0 0 24 24" fill="none" aria-hidden="true"><use href="../assets/icons.svg#icon-chevronDown"></use></svg> Interfaces</h2></summary><dl class="tsd-member-summaries"><dt class="tsd-member-summary"><a id="probabilisticsamplingoptions" class="tsd-anchor"></a><span class="tsd-member-summary-name"><svg class="tsd-kind-icon" viewBox="0 0 24 24" aria-label="Interface"><use href="../assets/icons.svg#icon-256"></use></svg><a href="../interfaces/_opentelemetry_sampler-jaeger-remote.ProbabilisticSamplingOptions.html">ProbabilisticSamplingOptions</a><a href="#probabilisticsamplingoptions" aria-label="Permalink" class="tsd-anchor-icon"><svg viewBox="0 0 24 24" aria-hidden="true"><use href="../assets/icons.svg#icon-anchor"></use></svg></a></span></dt><dd class="tsd-member-summary"></dd></dl></details></div><div class="col-sidebar"><div class="page-menu"><div class="tsd-navigation settings"><details class="tsd-accordion"><summary class="tsd-accordion-summary"><h3><svg 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