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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="A stored representation of data associated with a span."><title>SpanData in tracing_subscriber::registry - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="tracing_subscriber" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-feafe1bb7466e4bd.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="logo-container" href="../../tracing_subscriber/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../../tracing_subscriber/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt="logo"></a><h2><a href="../../tracing_subscriber/index.html">tracing_subscriber</a><span class="version">0.3.18</span></h2></div><h2 class="location"><a href="#">SpanData</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.extensions">extensions</a></li><li><a href="#tymethod.extensions_mut">extensions_mut</a></li><li><a href="#tymethod.id">id</a></li><li><a href="#tymethod.metadata">metadata</a></li><li><a href="#tymethod.parent">parent</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.is_enabled_for">is_enabled_for</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In tracing_subscriber::registry</a></h2></div></nav><div class="sidebar-resizer"></div>
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<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../tracing_subscriber/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="../index.html">tracing_subscriber</a>::<wbr><a href="index.html">registry</a>::<wbr><a class="trait" href="#">SpanData</a><button id="copy-path" title="Copy item path to clipboard"><img src="../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../../src/tracing_subscriber/registry/mod.rs.html#157-199">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub trait SpanData<'a> {
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// Required methods
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fn <a href="#tymethod.id" class="fn">id</a>(&self) -> <a class="struct" href="../../tracing_core/span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>;
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<span class="item-spacer"></span> fn <a href="#tymethod.metadata" class="fn">metadata</a>(&self) -> &'static <a class="struct" href="../../tracing_core/metadata/struct.Metadata.html" title="struct tracing_core::metadata::Metadata">Metadata</a><'static>;
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<span class="item-spacer"></span> fn <a href="#tymethod.parent" class="fn">parent</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="struct" href="../../tracing_core/span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>>;
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<span class="item-spacer"></span> fn <a href="#tymethod.extensions" class="fn">extensions</a>(&self) -> <a class="struct" href="struct.Extensions.html" title="struct tracing_subscriber::registry::Extensions">Extensions</a><'_>;
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<span class="item-spacer"></span> fn <a href="#tymethod.extensions_mut" class="fn">extensions_mut</a>(&self) -> <a class="struct" href="struct.ExtensionsMut.html" title="struct tracing_subscriber::registry::ExtensionsMut">ExtensionsMut</a><'_>;
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// Provided method
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fn <a href="#method.is_enabled_for" class="fn">is_enabled_for</a>(&self, filter: <a class="struct" href="../filter/struct.FilterId.html" title="struct tracing_subscriber::filter::FilterId">FilterId</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a> { ... }
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A stored representation of data associated with a span.</p>
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</div></details><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.id" class="method"><a class="src rightside" href="../../src/tracing_subscriber/registry/mod.rs.html#159">source</a><h4 class="code-header">fn <a href="#tymethod.id" class="fn">id</a>(&self) -> <a class="struct" href="../../tracing_core/span/struct.Id.html" title="struct tracing_core::span::Id">Id</a></h4></section></summary><div class="docblock"><p>Returns this span’s ID.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.metadata" class="method"><a class="src rightside" href="../../src/tracing_subscriber/registry/mod.rs.html#162">source</a><h4 class="code-header">fn <a href="#tymethod.metadata" class="fn">metadata</a>(&self) -> &'static <a class="struct" href="../../tracing_core/metadata/struct.Metadata.html" title="struct tracing_core::metadata::Metadata">Metadata</a><'static></h4></section></summary><div class="docblock"><p>Returns a reference to the span’s <code>Metadata</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.parent" class="method"><a class="src rightside" href="../../src/tracing_subscriber/registry/mod.rs.html#165">source</a><h4 class="code-header">fn <a href="#tymethod.parent" class="fn">parent</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="struct" href="../../tracing_core/span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>></h4></section></summary><div class="docblock"><p>Returns a reference to the ID</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.extensions" class="method"><a class="src rightside" href="../../src/tracing_subscriber/registry/mod.rs.html#173">source</a><h4 class="code-header">fn <a href="#tymethod.extensions" class="fn">extensions</a>(&self) -> <a class="struct" href="struct.Extensions.html" title="struct tracing_subscriber::registry::Extensions">Extensions</a><'_></h4></section></summary><div class="docblock"><p>Returns a reference to this span’s <code>Extensions</code>.</p>
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<p>The extensions may be used by <code>Layer</code>s to store additional data
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describing the span.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.extensions_mut" class="method"><a class="src rightside" href="../../src/tracing_subscriber/registry/mod.rs.html#181">source</a><h4 class="code-header">fn <a href="#tymethod.extensions_mut" class="fn">extensions_mut</a>(&self) -> <a class="struct" href="struct.ExtensionsMut.html" title="struct tracing_subscriber::registry::ExtensionsMut">ExtensionsMut</a><'_></h4></section></summary><div class="docblock"><p>Returns a mutable reference to this span’s <code>Extensions</code>.</p>
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<p>The extensions may be used by <code>Layer</code>s to store additional data
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describing the span.</p>
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</div></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.is_enabled_for" class="method"><a class="src rightside" href="../../src/tracing_subscriber/registry/mod.rs.html#195-198">source</a><h4 class="code-header">fn <a href="#method.is_enabled_for" class="fn">is_enabled_for</a>(&self, filter: <a class="struct" href="../filter/struct.FilterId.html" title="struct tracing_subscriber::filter::FilterId">FilterId</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if this span is enabled for the <a href="../layer/trait.Layer.html#per-layer-filtering" title="trait tracing_subscriber::layer::Layer">per-layer filter</a>
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corresponding to the provided <a href="../filter/struct.FilterId.html" title="struct tracing_subscriber::filter::FilterId"><code>FilterId</code></a>.</p>
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<h6 id="default-implementation"><a href="#default-implementation">Default Implementation</a></h6>
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<p>By default, this method assumes that the <a href="trait.LookupSpan.html" title="trait tracing_subscriber::registry::LookupSpan"><code>LookupSpan</code></a> implementation
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does not support <a href="../layer/trait.Layer.html#per-layer-filtering" title="trait tracing_subscriber::layer::Layer">per-layer filtering</a>, and always returns <code>true</code>.</p>
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</div></details></div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><section id="impl-SpanData%3C'a%3E-for-Data%3C'a%3E" class="impl"><a class="src rightside" href="../../src/tracing_subscriber/registry/sharded.rs.html#419-444">source</a><a href="#impl-SpanData%3C'a%3E-for-Data%3C'a%3E" class="anchor">§</a><h3 class="code-header">impl<'a> <a class="trait" href="trait.SpanData.html" title="trait tracing_subscriber::registry::SpanData">SpanData</a><'a> for <a class="struct" href="struct.Data.html" title="struct tracing_subscriber::registry::Data">Data</a><'a></h3></section></div><script src="../../trait.impl/tracing_subscriber/registry/trait.SpanData.js" async></script></section></div></main></body></html> |