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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 selector that aware of region statistics"><title>RegionStatAwareSelector in meta_srv::selector - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="meta_srv" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.0-nightly (ac7f9ec7d 2026-03-20)" data-channel="nightly" data-search-js="search-63369b7b.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../../static.files/storage-41dd4d93.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-5013f961.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc trait"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">RegionStatAwareSelector</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../meta_srv/index.html">meta_<wbr>srv</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Region<wbr>Stat<wbr>Aware<wbr>Selector</a></h2><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.Context" title="Context">Context</a></li><li><a href="#associatedtype.Output" title="Output">Output</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.select" title="select">select</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><div id="rustdoc-modnav"><h2><a href="index.html">In meta_<wbr>srv::<wbr>selector</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../index.html">meta_srv</a>::<wbr><a href="index.html">selector</a></div><h1>Trait <span class="trait">Region<wbr>Stat<wbr>Aware<wbr>Selector</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../src/meta_srv/selector.rs.html#46-57">Source</a> </span></div><pre class="rust item-decl"><code>pub trait RegionStatAwareSelector: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> {
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type <a href="#associatedtype.Context" class="associatedtype">Context</a>;
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type <a href="#associatedtype.Output" class="associatedtype">Output</a>;
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// Required method
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fn <a href="#tymethod.select" class="fn">select</a><'life0, 'life1, 'life2, 'async_trait>(
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&'life0 self,
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ctx: &'life1 Self::<a class="associatedtype" href="trait.RegionStatAwareSelector.html#associatedtype.Context" title="type meta_srv::selector::RegionStatAwareSelector::Context">Context</a>,
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from_peer_id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>,
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region_ids: &'life2 [RegionId],
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exclude_peer_ids: <a class="struct" href="https://doc.rust-lang.org/nightly/std/collections/hash/set/struct.HashSet.html" title="struct std::collections::hash::set::HashSet">HashSet</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>>,
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) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a><Output = <a class="type" href="../error/type.Result.html" title="type meta_srv::error::Result">Result</a><Self::<a class="associatedtype" href="trait.RegionStatAwareSelector.html#associatedtype.Output" title="type meta_srv::selector::RegionStatAwareSelector::Output">Output</a>>> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + 'async_trait>>
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<span class="where">where Self: 'async_trait,
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'life0: 'async_trait,
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'life1: 'async_trait,
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'life2: 'async_trait</span>;
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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 selector that aware of region statistics</p>
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<p>It selects the best destination peer for a list of regions.
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The selection is based on the region statistics, such as the region leader’s write throughput.</p>
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</div></details><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><section id="associatedtype.Context" class="method"><a class="src rightside" href="../../src/meta_srv/selector.rs.html#47">Source</a><h4 class="code-header">type <a href="#associatedtype.Context" class="associatedtype">Context</a></h4></section><section id="associatedtype.Output" class="method"><a class="src rightside" href="../../src/meta_srv/selector.rs.html#48">Source</a><h4 class="code-header">type <a href="#associatedtype.Output" class="associatedtype">Output</a></h4></section></div><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><section id="tymethod.select" class="method"><a class="src rightside" href="../../src/meta_srv/selector.rs.html#50-56">Source</a><h4 class="code-header">fn <a href="#tymethod.select" class="fn">select</a><'life0, 'life1, 'life2, 'async_trait>(
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&'life0 self,
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ctx: &'life1 Self::<a class="associatedtype" href="trait.RegionStatAwareSelector.html#associatedtype.Context" title="type meta_srv::selector::RegionStatAwareSelector::Context">Context</a>,
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from_peer_id: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>,
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region_ids: &'life2 [RegionId],
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exclude_peer_ids: <a class="struct" href="https://doc.rust-lang.org/nightly/std/collections/hash/set/struct.HashSet.html" title="struct std::collections::hash::set::HashSet">HashSet</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>>,
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) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a><<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a><dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a><Output = <a class="type" href="../error/type.Result.html" title="type meta_srv::error::Result">Result</a><Self::<a class="associatedtype" href="trait.RegionStatAwareSelector.html#associatedtype.Output" title="type meta_srv::selector::RegionStatAwareSelector::Output">Output</a>>> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + 'async_trait>><div class="where">where
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Self: 'async_trait,
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'life0: 'async_trait,
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'life1: 'async_trait,
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'life2: 'async_trait,</div></h4></section></div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"></div><script src="../../trait.impl/meta_srv/selector/trait.RegionStatAwareSelector.js" async></script></section></div></main></body></html> |