| <!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 set of gRPC custom metadata entries."><meta name="keywords" content="rust, rustlang, rust-lang, MetadataMap"><title>MetadataMap in tonic::metadata - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc struct"><!--[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="sidebar-logo" href="../../tonic/index.html"><div class="logo-container"><img src="https://raw.githubusercontent.com/tokio-rs/website/master/public/img/icons/tonic.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../tonic/index.html"><div class="logo-container"> |
| <img src="https://raw.githubusercontent.com/tokio-rs/website/master/public/img/icons/tonic.svg" alt="logo"></div></a><h2 class="location"><a href="#">MetadataMap</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.append">append</a></li><li><a href="#method.append_bin">append_bin</a></li><li><a href="#method.capacity">capacity</a></li><li><a href="#method.clear">clear</a></li><li><a href="#method.contains_key">contains_key</a></li><li><a href="#method.entry">entry</a></li><li><a href="#method.entry_bin">entry_bin</a></li><li><a href="#method.from_headers">from_headers</a></li><li><a href="#method.get">get</a></li><li><a href="#method.get_all">get_all</a></li><li><a href="#method.get_all_bin">get_all_bin</a></li><li><a href="#method.get_bin">get_bin</a></li><li><a href="#method.get_bin_mut">get_bin_mut</a></li><li><a href="#method.get_mut">get_mut</a></li><li><a href="#method.insert">insert</a></li><li><a href="#method.insert_bin">insert_bin</a></li><li><a href="#method.into_headers">into_headers</a></li><li><a href="#method.is_empty">is_empty</a></li><li><a href="#method.iter">iter</a></li><li><a href="#method.iter_mut">iter_mut</a></li><li><a href="#method.keys">keys</a></li><li><a href="#method.keys_len">keys_len</a></li><li><a href="#method.len">len</a></li><li><a href="#method.new">new</a></li><li><a href="#method.remove">remove</a></li><li><a href="#method.remove_bin">remove_bin</a></li><li><a href="#method.reserve">reserve</a></li><li><a href="#method.values">values</a></li><li><a href="#method.values_mut">values_mut</a></li><li><a href="#method.with_capacity">with_capacity</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Clone-for-MetadataMap">Clone</a></li><li><a href="#impl-Debug-for-MetadataMap">Debug</a></li><li><a href="#impl-Default-for-MetadataMap">Default</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-MetadataMap">RefUnwindSafe</a></li><li><a href="#impl-Send-for-MetadataMap">Send</a></li><li><a href="#impl-Sync-for-MetadataMap">Sync</a></li><li><a href="#impl-Unpin-for-MetadataMap">Unpin</a></li><li><a href="#impl-UnwindSafe-for-MetadataMap">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-MetadataMap">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-MetadataMap">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-MetadataMap">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-MetadataMap">From<T></a></li><li><a href="#impl-Instrument-for-MetadataMap">Instrument</a></li><li><a href="#impl-Instrument-for-MetadataMap-1">Instrument</a></li><li><a href="#impl-Into%3CU%3E-for-MetadataMap">Into<U></a></li><li><a href="#impl-ToOwned-for-MetadataMap">ToOwned</a></li><li><a href="#impl-TryFrom%3CU%3E-for-MetadataMap">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-MetadataMap">TryInto<U></a></li><li><a href="#impl-VZip%3CV%3E-for-MetadataMap">VZip<V></a></li><li><a href="#impl-WithSubscriber-for-MetadataMap">WithSubscriber</a></li><li><a href="#impl-WithSubscriber-for-MetadataMap-1">WithSubscriber</a></li></ul></section><h2><a href="index.html">In tonic::metadata</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Struct <a href="../index.html">tonic</a>::<wbr><a href="index.html">metadata</a>::<wbr><a class="struct" href="#">MetadataMap</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../src/tonic/metadata/map.rs.html#35-37">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct MetadataMap { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A set of gRPC custom metadata entries.</p> |
| <h2 id="examples"><a href="#examples">Examples</a></h2> |
| <p>Basic usage</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"example.com"</span>.parse().unwrap()); |
| map.insert(<span class="string">"x-number"</span>, <span class="string">"123"</span>.parse().unwrap()); |
| map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"[binary data]"</span>)); |
| |
| <span class="macro">assert!</span>(map.contains_key(<span class="string">"x-host"</span>)); |
| <span class="macro">assert!</span>(!map.contains_key(<span class="string">"x-location"</span>)); |
| |
| <span class="macro">assert_eq!</span>(map.get(<span class="string">"x-host"</span>).unwrap(), <span class="string">"example.com"</span>); |
| |
| map.remove(<span class="string">"x-host"</span>); |
| |
| <span class="macro">assert!</span>(!map.contains_key(<span class="string">"x-host"</span>));</code></pre></div> |
| </div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#201-1217">source</a><a href="#impl-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.new" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#226-228">source</a><h4 class="code-header">pub fn <a href="#method.new" class="fnname">new</a>() -> Self</h4></section></summary><div class="docblock"><p>Create an empty <code>MetadataMap</code>.</p> |
| <p>The map will be created without any capacity. This function will not |
| allocate.</p> |
| <h5 id="examples-1"><a href="#examples-1">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>map = MetadataMap::new(); |
| |
| <span class="macro">assert!</span>(map.is_empty()); |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, map.capacity());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from_headers" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#231-233">source</a><h4 class="code-header">pub fn <a href="#method.from_headers" class="fnname">from_headers</a>(headers: <a class="struct" href="../../http/header/map/struct.HeaderMap.html" title="struct http::header::map::HeaderMap">HeaderMap</a>) -> Self</h4></section></summary><div class="docblock"><p>Convert an HTTP HeaderMap to a MetadataMap</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into_headers" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#248-250">source</a><h4 class="code-header">pub fn <a href="#method.into_headers" class="fnname">into_headers</a>(self) -> <a class="struct" href="../../http/header/map/struct.HeaderMap.html" title="struct http::header::map::HeaderMap">HeaderMap</a></h4></section></summary><div class="docblock"><p>Convert a MetadataMap into a HTTP HeaderMap</p> |
| <h5 id="examples-2"><a href="#examples-2">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"example.com"</span>.parse().unwrap()); |
| |
| <span class="kw">let </span>http_map = map.into_headers(); |
| |
| <span class="macro">assert_eq!</span>(http_map.get(<span class="string">"x-host"</span>).unwrap(), <span class="string">"example.com"</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_capacity" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#277-281">source</a><h4 class="code-header">pub fn <a href="#method.with_capacity" class="fnname">with_capacity</a>(capacity: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h4></section></summary><div class="docblock"><p>Create an empty <code>MetadataMap</code> with the specified capacity.</p> |
| <p>The returned map will allocate internal storage in order to hold about |
| <code>capacity</code> elements without reallocating. However, this is a “best |
| effort” as there are usage patterns that could cause additional |
| allocations before <code>capacity</code> metadata entries are stored in the map.</p> |
| <p>More capacity than requested may be allocated.</p> |
| <h5 id="examples-3"><a href="#examples-3">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>map: MetadataMap = MetadataMap::with_capacity(<span class="number">10</span>); |
| |
| <span class="macro">assert!</span>(map.is_empty()); |
| <span class="macro">assert!</span>(map.capacity() >= <span class="number">10</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.len" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#307-309">source</a><h4 class="code-header">pub fn <a href="#method.len" class="fnname">len</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Returns the number of metadata entries (ascii and binary) stored in the |
| map.</p> |
| <p>This number represents the total number of <strong>values</strong> stored in the map. |
| This number can be greater than or equal to the number of <strong>keys</strong> |
| stored given that a single key may have more than one associated value.</p> |
| <h5 id="examples-4"><a href="#examples-4">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, map.len()); |
| |
| map.insert(<span class="string">"x-host-ip"</span>, <span class="string">"127.0.0.1"</span>.parse().unwrap()); |
| map.insert_bin(<span class="string">"x-host-name-bin"</span>, MetadataValue::from_bytes(<span class="string">b"localhost"</span>)); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, map.len()); |
| |
| map.append(<span class="string">"x-host-ip"</span>, <span class="string">"text/html"</span>.parse().unwrap()); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">3</span>, map.len());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.keys_len" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#333-335">source</a><h4 class="code-header">pub fn <a href="#method.keys_len" class="fnname">keys_len</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Returns the number of keys (ascii and binary) stored in the map.</p> |
| <p>This number will be less than or equal to <code>len()</code> as each key may have |
| more than one associated value.</p> |
| <h5 id="examples-5"><a href="#examples-5">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, map.keys_len()); |
| |
| map.insert(<span class="string">"x-host-ip"</span>, <span class="string">"127.0.0.1"</span>.parse().unwrap()); |
| map.insert_bin(<span class="string">"x-host-name-bin"</span>, MetadataValue::from_bytes(<span class="string">b"localhost"</span>)); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, map.keys_len()); |
| |
| map.append(<span class="string">"x-host-ip"</span>, <span class="string">"text/html"</span>.parse().unwrap()); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">2</span>, map.keys_len());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.is_empty" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#351-353">source</a><h4 class="code-header">pub fn <a href="#method.is_empty" class="fnname">is_empty</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true if the map contains no elements.</p> |
| <h5 id="examples-6"><a href="#examples-6">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| <span class="macro">assert!</span>(map.is_empty()); |
| |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"hello.world"</span>.parse().unwrap()); |
| |
| <span class="macro">assert!</span>(!map.is_empty());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clear" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#369-371">source</a><h4 class="code-header">pub fn <a href="#method.clear" class="fnname">clear</a>(&mut self)</h4></section></summary><div class="docblock"><p>Clears the map, removing all key-value pairs. Keeps the allocated memory |
| for reuse.</p> |
| <h5 id="examples-7"><a href="#examples-7">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"hello.world"</span>.parse().unwrap()); |
| |
| map.clear(); |
| <span class="macro">assert!</span>(map.is_empty()); |
| <span class="macro">assert!</span>(map.capacity() > <span class="number">0</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.capacity" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#390-392">source</a><h4 class="code-header">pub fn <a href="#method.capacity" class="fnname">capacity</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Returns the number of custom metadata entries the map can hold without |
| reallocating.</p> |
| <p>This number is an approximation as certain usage patterns could cause |
| additional allocations before the returned capacity is filled.</p> |
| <h5 id="examples-8"><a href="#examples-8">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, map.capacity()); |
| |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"hello.world"</span>.parse().unwrap()); |
| <span class="macro">assert_eq!</span>(<span class="number">6</span>, map.capacity());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.reserve" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#415-417">source</a><h4 class="code-header">pub fn <a href="#method.reserve" class="fnname">reserve</a>(&mut self, additional: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</h4></section></summary><div class="docblock"><p>Reserves capacity for at least <code>additional</code> more custom metadata to be |
| inserted into the <code>MetadataMap</code>.</p> |
| <p>The metadata map may reserve more space to avoid frequent reallocations. |
| Like with <code>with_capacity</code>, this will be a “best effort” to avoid |
| allocations until <code>additional</code> more custom metadata is inserted. Certain |
| usage patterns could cause additional allocations before the number is |
| reached.</p> |
| <h5 id="panics"><a href="#panics">Panics</a></h5> |
| <p>Panics if the new allocation size overflows <code>usize</code>.</p> |
| <h5 id="examples-9"><a href="#examples-9">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| map.reserve(<span class="number">10</span>);</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#454-459">source</a><h4 class="code-header">pub fn <a href="#method.get" class="fnname">get</a><K>(&self, key: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Ascii>><span class="where fmt-newline">where<br> K: AsMetadataKey<Ascii>,</span></h4></section></summary><div class="docblock"><p>Returns a reference to the value associated with the key. This method |
| is for ascii metadata entries (those whose names don’t end with |
| “-bin”). For binary entries, use get_bin.</p> |
| <p>If there are multiple values associated with the key, then the first one |
| is returned. Use <code>get_all</code> to get all values associated with a given |
| key. Returns <code>None</code> if there are no values associated with the key.</p> |
| <h5 id="examples-10"><a href="#examples-10">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="macro">assert!</span>(map.get(<span class="string">"x-host"</span>).is_none()); |
| |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| <span class="macro">assert_eq!</span>(map.get(<span class="string">"x-host"</span>).unwrap(), <span class="kw-2">&</span><span class="string">"hello"</span>); |
| <span class="macro">assert_eq!</span>(map.get(<span class="string">"x-host"</span>).unwrap(), <span class="kw-2">&</span><span class="string">"hello"</span>); |
| |
| map.append(<span class="string">"x-host"</span>, <span class="string">"world"</span>.parse().unwrap()); |
| <span class="macro">assert_eq!</span>(map.get(<span class="string">"x-host"</span>).unwrap(), <span class="kw-2">&</span><span class="string">"hello"</span>); |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append_bin(<span class="string">"host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); |
| <span class="macro">assert!</span>(map.get(<span class="string">"host-bin"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get(<span class="string">"host-bin"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get(<span class="kw-2">&</span>(<span class="string">"host-bin"</span>.to_string())).is_none()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.get(<span class="string">"host{}bin"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get(<span class="string">"host{}bin"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get(<span class="kw-2">&</span>(<span class="string">"host{}bin"</span>.to_string())).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_bin" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#490-495">source</a><h4 class="code-header">pub fn <a href="#method.get_bin" class="fnname">get_bin</a><K>(&self, key: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Binary>><span class="where fmt-newline">where<br> K: AsMetadataKey<Binary>,</span></h4></section></summary><div class="docblock"><p>Like get, but for Binary keys (for example “trace-proto-bin”).</p> |
| <h5 id="examples-11"><a href="#examples-11">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="macro">assert!</span>(map.get_bin(<span class="string">"trace-proto-bin"</span>).is_none()); |
| |
| map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"hello"</span>)); |
| <span class="macro">assert_eq!</span>(map.get_bin(<span class="string">"trace-proto-bin"</span>).unwrap(), <span class="kw-2">&</span><span class="string">"hello"</span>); |
| <span class="macro">assert_eq!</span>(map.get_bin(<span class="string">"trace-proto-bin"</span>).unwrap(), <span class="kw-2">&</span><span class="string">"hello"</span>); |
| |
| map.append_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); |
| <span class="macro">assert_eq!</span>(map.get_bin(<span class="string">"trace-proto-bin"</span>).unwrap(), <span class="kw-2">&</span><span class="string">"hello"</span>); |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append(<span class="string">"host"</span>, <span class="string">"world"</span>.parse().unwrap()); |
| <span class="macro">assert!</span>(map.get_bin(<span class="string">"host"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get_bin(<span class="string">"host"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get_bin(<span class="kw-2">&</span>(<span class="string">"host"</span>.to_string())).is_none()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.get_bin(<span class="string">"host{}-bin"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get_bin(<span class="string">"host{}-bin"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get_bin(<span class="kw-2">&</span>(<span class="string">"host{}-bin"</span>.to_string())).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_mut" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#528-533">source</a><h4 class="code-header">pub fn <a href="#method.get_mut" class="fnname">get_mut</a><K>(&mut self, key: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut <a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Ascii>><span class="where fmt-newline">where<br> K: AsMetadataKey<Ascii>,</span></h4></section></summary><div class="docblock"><p>Returns a mutable reference to the value associated with the key. This |
| method is for ascii metadata entries (those whose names don’t end with |
| “-bin”). For binary entries, use get_mut_bin.</p> |
| <p>If there are multiple values associated with the key, then the first one |
| is returned. Use <code>entry</code> to get all values associated with a given |
| key. Returns <code>None</code> if there are no values associated with the key.</p> |
| <h5 id="examples-12"><a href="#examples-12">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::default(); |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| map.get_mut(<span class="string">"x-host"</span>).unwrap().set_sensitive(<span class="bool-val">true</span>); |
| |
| <span class="macro">assert!</span>(map.get(<span class="string">"x-host"</span>).unwrap().is_sensitive()); |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append_bin(<span class="string">"host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); |
| <span class="macro">assert!</span>(map.get_mut(<span class="string">"host-bin"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get_mut(<span class="string">"host-bin"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get_mut(<span class="kw-2">&</span>(<span class="string">"host-bin"</span>.to_string())).is_none()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.get_mut(<span class="string">"host{}"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get_mut(<span class="string">"host{}"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get_mut(<span class="kw-2">&</span>(<span class="string">"host{}"</span>.to_string())).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_bin_mut" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#560-565">source</a><h4 class="code-header">pub fn <a href="#method.get_bin_mut" class="fnname">get_bin_mut</a><K>(&mut self, key: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut <a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Binary>><span class="where fmt-newline">where<br> K: AsMetadataKey<Binary>,</span></h4></section></summary><div class="docblock"><p>Like get_mut, but for Binary keys (for example “trace-proto-bin”).</p> |
| <h5 id="examples-13"><a href="#examples-13">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::default(); |
| map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"hello"</span>)); |
| map.get_bin_mut(<span class="string">"trace-proto-bin"</span>).unwrap().set_sensitive(<span class="bool-val">true</span>); |
| |
| <span class="macro">assert!</span>(map.get_bin(<span class="string">"trace-proto-bin"</span>).unwrap().is_sensitive()); |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append(<span class="string">"host"</span>, <span class="string">"world"</span>.parse().unwrap()); |
| <span class="macro">assert!</span>(map.get_bin_mut(<span class="string">"host"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get_bin_mut(<span class="string">"host"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get_bin_mut(<span class="kw-2">&</span>(<span class="string">"host"</span>.to_string())).is_none()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.get_bin_mut(<span class="string">"host{}-bin"</span>).is_none()); |
| <span class="macro">assert!</span>(map.get_bin_mut(<span class="string">"host{}-bin"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.get_bin_mut(<span class="kw-2">&</span>(<span class="string">"host{}-bin"</span>.to_string())).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_all" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#608-616">source</a><h4 class="code-header">pub fn <a href="#method.get_all" class="fnname">get_all</a><K>(&self, key: K) -> <a class="struct" href="struct.GetAll.html" title="struct tonic::metadata::GetAll">GetAll</a><'_, Ascii><span class="where fmt-newline">where<br> K: AsMetadataKey<Ascii>,</span></h4></section></summary><div class="docblock"><p>Returns a view of all values associated with a key. This method is for |
| ascii metadata entries (those whose names don’t end with “-bin”). For |
| binary entries, use get_all_bin.</p> |
| <p>The returned view does not incur any allocations and allows iterating |
| the values associated with the key. See <a href="struct.GetAll.html"><code>GetAll</code></a> for more details. |
| Returns <code>None</code> if there are no values associated with the key.</p> |
| <h5 id="examples-14"><a href="#examples-14">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| map.append(<span class="string">"x-host"</span>, <span class="string">"goodbye"</span>.parse().unwrap()); |
| |
| { |
| <span class="kw">let </span>view = map.get_all(<span class="string">"x-host"</span>); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>iter = view.iter(); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span><span class="string">"hello"</span>, iter.next().unwrap()); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span><span class="string">"goodbye"</span>, iter.next().unwrap()); |
| <span class="macro">assert!</span>(iter.next().is_none()); |
| } |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append_bin(<span class="string">"host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); |
| <span class="macro">assert!</span>(map.get_all(<span class="string">"host-bin"</span>).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all(<span class="string">"host-bin"</span>.to_string()).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all(<span class="kw-2">&</span>(<span class="string">"host-bin"</span>.to_string())).iter().next().is_none()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.get_all(<span class="string">"host{}"</span>).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all(<span class="string">"host{}"</span>.to_string()).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all(<span class="kw-2">&</span>(<span class="string">"host{}"</span>.to_string())).iter().next().is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.get_all_bin" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#651-659">source</a><h4 class="code-header">pub fn <a href="#method.get_all_bin" class="fnname">get_all_bin</a><K>(&self, key: K) -> <a class="struct" href="struct.GetAll.html" title="struct tonic::metadata::GetAll">GetAll</a><'_, Binary><span class="where fmt-newline">where<br> K: AsMetadataKey<Binary>,</span></h4></section></summary><div class="docblock"><p>Like get_all, but for Binary keys (for example “trace-proto-bin”).</p> |
| <h5 id="examples-15"><a href="#examples-15">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"hello"</span>)); |
| map.append_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"goodbye"</span>)); |
| |
| { |
| <span class="kw">let </span>view = map.get_all_bin(<span class="string">"trace-proto-bin"</span>); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>iter = view.iter(); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span><span class="string">"hello"</span>, iter.next().unwrap()); |
| <span class="macro">assert_eq!</span>(<span class="kw-2">&</span><span class="string">"goodbye"</span>, iter.next().unwrap()); |
| <span class="macro">assert!</span>(iter.next().is_none()); |
| } |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append(<span class="string">"host"</span>, <span class="string">"world"</span>.parse().unwrap()); |
| <span class="macro">assert!</span>(map.get_all_bin(<span class="string">"host"</span>).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all_bin(<span class="string">"host"</span>.to_string()).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all_bin(<span class="kw-2">&</span>(<span class="string">"host"</span>.to_string())).iter().next().is_none()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.get_all_bin(<span class="string">"host{}-bin"</span>).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all_bin(<span class="string">"host{}-bin"</span>.to_string()).iter().next().is_none()); |
| <span class="macro">assert!</span>(map.get_all_bin(<span class="kw-2">&</span>(<span class="string">"host{}-bin"</span>.to_string())).iter().next().is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.contains_key" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#681-686">source</a><h4 class="code-header">pub fn <a href="#method.contains_key" class="fnname">contains_key</a><K>(&self, key: K) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> K: AsEncodingAgnosticMetadataKey,</span></h4></section></summary><div class="docblock"><p>Returns true if the map contains a value for the specified key. This |
| method works for both ascii and binary entries.</p> |
| <h5 id="examples-16"><a href="#examples-16">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="macro">assert!</span>(!map.contains_key(<span class="string">"x-host"</span>)); |
| |
| map.append_bin(<span class="string">"host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"world"</span>.parse().unwrap()); |
| |
| <span class="comment">// contains_key works for both Binary and Ascii keys: |
| </span><span class="macro">assert!</span>(map.contains_key(<span class="string">"x-host"</span>)); |
| <span class="macro">assert!</span>(map.contains_key(<span class="string">"host-bin"</span>)); |
| |
| <span class="comment">// contains_key returns false for invalid keys: |
| </span><span class="macro">assert!</span>(!map.contains_key(<span class="string">"x{}host"</span>));</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.iter" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#713-717">source</a><h4 class="code-header">pub fn <a href="#method.iter" class="fnname">iter</a>(&self) -> <a class="struct" href="struct.Iter.html" title="struct tonic::metadata::Iter">Iter</a><'_><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="struct.Iter.html" title="struct tonic::metadata::Iter">Iter</a><'a></span><code class="content"><span class="where fmt-newline">impl<'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="struct.Iter.html" title="struct tonic::metadata::Iter">Iter</a><'a></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" class="associatedtype">Item</a> = <a class="enum" href="enum.KeyAndValueRef.html" title="enum tonic::metadata::KeyAndValueRef">KeyAndValueRef</a><'a>;</span></code></span></span></span></span></h4></section></summary><div class="docblock"><p>An iterator visiting all key-value pairs (both ascii and binary).</p> |
| <p>The iteration order is arbitrary, but consistent across platforms for |
| the same crate version. Each key will be yielded once per associated |
| value. So, if a key has 3 associated values, it will be yielded 3 times.</p> |
| <h5 id="examples-17"><a href="#examples-17">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| map.insert(<span class="string">"x-word"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| map.append(<span class="string">"x-word"</span>, <span class="string">"goodbye"</span>.parse().unwrap()); |
| map.insert(<span class="string">"x-number"</span>, <span class="string">"123"</span>.parse().unwrap()); |
| |
| <span class="kw">for </span>key_and_value <span class="kw">in </span>map.iter() { |
| <span class="kw">match </span>key_and_value { |
| KeyAndValueRef::Ascii(<span class="kw-2">ref </span>key, <span class="kw-2">ref </span>value) => |
| <span class="macro">println!</span>(<span class="string">"Ascii: {:?}: {:?}"</span>, key, value), |
| KeyAndValueRef::Binary(<span class="kw-2">ref </span>key, <span class="kw-2">ref </span>value) => |
| <span class="macro">println!</span>(<span class="string">"Binary: {:?}: {:?}"</span>, key, value), |
| } |
| }</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.iter_mut" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#744-748">source</a><h4 class="code-header">pub fn <a href="#method.iter_mut" class="fnname">iter_mut</a>(&mut self) -> <a class="struct" href="struct.IterMut.html" title="struct tonic::metadata::IterMut">IterMut</a><'_><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="struct.IterMut.html" title="struct tonic::metadata::IterMut">IterMut</a><'a></span><code class="content"><span class="where fmt-newline">impl<'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="struct.IterMut.html" title="struct tonic::metadata::IterMut">IterMut</a><'a></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" class="associatedtype">Item</a> = <a class="enum" href="enum.KeyAndMutValueRef.html" title="enum tonic::metadata::KeyAndMutValueRef">KeyAndMutValueRef</a><'a>;</span></code></span></span></span></span></h4></section></summary><div class="docblock"><p>An iterator visiting all key-value pairs, with mutable value references.</p> |
| <p>The iterator order is arbitrary, but consistent across platforms for the |
| same crate version. Each key will be yielded once per associated value, |
| so if a key has 3 associated values, it will be yielded 3 times.</p> |
| <h5 id="examples-18"><a href="#examples-18">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| map.insert(<span class="string">"x-word"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| map.append(<span class="string">"x-word"</span>, <span class="string">"goodbye"</span>.parse().unwrap()); |
| map.insert(<span class="string">"x-number"</span>, <span class="string">"123"</span>.parse().unwrap()); |
| |
| <span class="kw">for </span>key_and_value <span class="kw">in </span>map.iter_mut() { |
| <span class="kw">match </span>key_and_value { |
| KeyAndMutValueRef::Ascii(key, <span class="kw-2">mut </span>value) => |
| value.set_sensitive(<span class="bool-val">true</span>), |
| KeyAndMutValueRef::Binary(key, <span class="kw-2">mut </span>value) => |
| value.set_sensitive(<span class="bool-val">false</span>), |
| } |
| }</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.keys" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#776-780">source</a><h4 class="code-header">pub fn <a href="#method.keys" class="fnname">keys</a>(&self) -> <a class="struct" href="struct.Keys.html" title="struct tonic::metadata::Keys">Keys</a><'_><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="struct.Keys.html" title="struct tonic::metadata::Keys">Keys</a><'a></span><code class="content"><span class="where fmt-newline">impl<'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="struct.Keys.html" title="struct tonic::metadata::Keys">Keys</a><'a></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" class="associatedtype">Item</a> = <a class="enum" href="enum.KeyRef.html" title="enum tonic::metadata::KeyRef">KeyRef</a><'a>;</span></code></span></span></span></span></h4></section></summary><div class="docblock"><p>An iterator visiting all keys.</p> |
| <p>The iteration order is arbitrary, but consistent across platforms for |
| the same crate version. Each key will be yielded only once even if it |
| has multiple associated values.</p> |
| <h5 id="examples-19"><a href="#examples-19">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| map.insert(<span class="string">"x-word"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| map.append(<span class="string">"x-word"</span>, <span class="string">"goodbye"</span>.parse().unwrap()); |
| map.insert_bin(<span class="string">"x-number-bin"</span>, MetadataValue::from_bytes(<span class="string">b"123"</span>)); |
| |
| <span class="kw">for </span>key <span class="kw">in </span>map.keys() { |
| <span class="kw">match </span>key { |
| KeyRef::Ascii(<span class="kw-2">ref </span>key) => |
| <span class="macro">println!</span>(<span class="string">"Ascii key: {:?}"</span>, key), |
| KeyRef::Binary(<span class="kw-2">ref </span>key) => |
| <span class="macro">println!</span>(<span class="string">"Binary key: {:?}"</span>, key), |
| } |
| <span class="macro">println!</span>(<span class="string">"{:?}"</span>, key); |
| }</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.values" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#807-811">source</a><h4 class="code-header">pub fn <a href="#method.values" class="fnname">values</a>(&self) -> <a class="struct" href="struct.Values.html" title="struct tonic::metadata::Values">Values</a><'_><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="struct.Values.html" title="struct tonic::metadata::Values">Values</a><'a></span><code class="content"><span class="where fmt-newline">impl<'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="struct.Values.html" title="struct tonic::metadata::Values">Values</a><'a></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" class="associatedtype">Item</a> = <a class="enum" href="enum.ValueRef.html" title="enum tonic::metadata::ValueRef">ValueRef</a><'a>;</span></code></span></span></span></span></h4></section></summary><div class="docblock"><p>An iterator visiting all values (both ascii and binary).</p> |
| <p>The iteration order is arbitrary, but consistent across platforms for |
| the same crate version.</p> |
| <h5 id="examples-20"><a href="#examples-20">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| |
| map.insert(<span class="string">"x-word"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| map.append(<span class="string">"x-word"</span>, <span class="string">"goodbye"</span>.parse().unwrap()); |
| map.insert_bin(<span class="string">"x-number-bin"</span>, MetadataValue::from_bytes(<span class="string">b"123"</span>)); |
| |
| <span class="kw">for </span>value <span class="kw">in </span>map.values() { |
| <span class="kw">match </span>value { |
| ValueRef::Ascii(<span class="kw-2">ref </span>value) => |
| <span class="macro">println!</span>(<span class="string">"Ascii value: {:?}"</span>, value), |
| ValueRef::Binary(<span class="kw-2">ref </span>value) => |
| <span class="macro">println!</span>(<span class="string">"Binary value: {:?}"</span>, value), |
| } |
| <span class="macro">println!</span>(<span class="string">"{:?}"</span>, value); |
| }</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.values_mut" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#837-841">source</a><h4 class="code-header">pub fn <a href="#method.values_mut" class="fnname">values_mut</a>(&mut self) -> <a class="struct" href="struct.ValuesMut.html" title="struct tonic::metadata::ValuesMut">ValuesMut</a><'_><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="struct.ValuesMut.html" title="struct tonic::metadata::ValuesMut">ValuesMut</a><'a></span><code class="content"><span class="where fmt-newline">impl<'a> <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a> for <a class="struct" href="struct.ValuesMut.html" title="struct tonic::metadata::ValuesMut">ValuesMut</a><'a></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" class="associatedtype">Item</a> = <a class="enum" href="enum.ValueRefMut.html" title="enum tonic::metadata::ValueRefMut">ValueRefMut</a><'a>;</span></code></span></span></span></span></h4></section></summary><div class="docblock"><p>An iterator visiting all values mutably.</p> |
| <p>The iteration order is arbitrary, but consistent across platforms for |
| the same crate version.</p> |
| <h5 id="examples-21"><a href="#examples-21">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::default(); |
| |
| map.insert(<span class="string">"x-word"</span>, <span class="string">"hello"</span>.parse().unwrap()); |
| map.append(<span class="string">"x-word"</span>, <span class="string">"goodbye"</span>.parse().unwrap()); |
| map.insert(<span class="string">"x-number"</span>, <span class="string">"123"</span>.parse().unwrap()); |
| |
| <span class="kw">for </span>value <span class="kw">in </span>map.values_mut() { |
| <span class="kw">match </span>value { |
| ValueRefMut::Ascii(<span class="kw-2">mut </span>value) => |
| value.set_sensitive(<span class="bool-val">true</span>), |
| ValueRefMut::Binary(<span class="kw-2">mut </span>value) => |
| value.set_sensitive(<span class="bool-val">false</span>), |
| } |
| }</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.entry" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#883-888">source</a><h4 class="code-header">pub fn <a href="#method.entry" class="fnname">entry</a><K>(<br> &mut self,<br> key: K<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="enum.Entry.html" title="enum tonic::metadata::Entry">Entry</a><'_, Ascii>, <a class="struct" href="errors/struct.InvalidMetadataKey.html" title="struct tonic::metadata::errors::InvalidMetadataKey">InvalidMetadataKey</a>><span class="where fmt-newline">where<br> K: AsMetadataKey<Ascii>,</span></h4></section></summary><div class="docblock"><p>Gets the given ascii key’s corresponding entry in the map for in-place |
| manipulation. For binary keys, use <code>entry_bin</code>.</p> |
| <h5 id="examples-22"><a href="#examples-22">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::default(); |
| |
| <span class="kw">let </span>headers = <span class="kw-2">&</span>[ |
| <span class="string">"content-length"</span>, |
| <span class="string">"x-hello"</span>, |
| <span class="string">"Content-Length"</span>, |
| <span class="string">"x-world"</span>, |
| ]; |
| |
| <span class="kw">for </span><span class="kw-2">&</span>header <span class="kw">in </span>headers { |
| <span class="kw">let </span>counter = map.entry(header).unwrap().or_insert(<span class="string">""</span>.parse().unwrap()); |
| <span class="kw-2">*</span>counter = <span class="macro">format!</span>(<span class="string">"{}{}"</span>, counter.to_str().unwrap(), <span class="string">"1"</span>).parse().unwrap(); |
| } |
| |
| <span class="macro">assert_eq!</span>(map.get(<span class="string">"content-length"</span>).unwrap(), <span class="string">"11"</span>); |
| <span class="macro">assert_eq!</span>(map.get(<span class="string">"x-hello"</span>).unwrap(), <span class="string">"1"</span>); |
| |
| <span class="comment">// Gracefully handles parting invalid key strings |
| </span><span class="macro">assert!</span>(!map.entry(<span class="string">"a{}b"</span>).is_ok()); |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append_bin(<span class="string">"host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); |
| <span class="macro">assert!</span>(!map.entry(<span class="string">"host-bin"</span>).is_ok()); |
| <span class="macro">assert!</span>(!map.entry(<span class="string">"host-bin"</span>.to_string()).is_ok()); |
| <span class="macro">assert!</span>(!map.entry(<span class="kw-2">&</span>(<span class="string">"host-bin"</span>.to_string())).is_ok()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(!map.entry(<span class="string">"host{}"</span>).is_ok()); |
| <span class="macro">assert!</span>(!map.entry(<span class="string">"host{}"</span>.to_string()).is_ok()); |
| <span class="macro">assert!</span>(!map.entry(<span class="kw-2">&</span>(<span class="string">"host{}"</span>.to_string())).is_ok());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.entry_bin" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#928-933">source</a><h4 class="code-header">pub fn <a href="#method.entry_bin" class="fnname">entry_bin</a><K>(<br> &mut self,<br> key: K<br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="enum.Entry.html" title="enum tonic::metadata::Entry">Entry</a><'_, Binary>, <a class="struct" href="errors/struct.InvalidMetadataKey.html" title="struct tonic::metadata::errors::InvalidMetadataKey">InvalidMetadataKey</a>><span class="where fmt-newline">where<br> K: AsMetadataKey<Binary>,</span></h4></section></summary><div class="docblock"><p>Gets the given Binary key’s corresponding entry in the map for in-place |
| manipulation.</p> |
| <h5 id="examples-23"><a href="#examples-23">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::default(); |
| |
| <span class="kw">let </span>headers = <span class="kw-2">&</span>[ |
| <span class="string">"content-length-bin"</span>, |
| <span class="string">"x-hello-bin"</span>, |
| <span class="string">"Content-Length-bin"</span>, |
| <span class="string">"x-world-bin"</span>, |
| ]; |
| |
| <span class="kw">for </span><span class="kw-2">&</span>header <span class="kw">in </span>headers { |
| <span class="kw">let </span>counter = map.entry_bin(header).unwrap().or_insert(MetadataValue::from_bytes(<span class="string">b""</span>)); |
| <span class="kw-2">*</span>counter = MetadataValue::from_bytes(<span class="macro">format!</span>(<span class="string">"{}{}"</span>, str::from_utf8(counter.to_bytes().unwrap().as_ref()).unwrap(), <span class="string">"1"</span>).as_bytes()); |
| } |
| |
| <span class="macro">assert_eq!</span>(map.get_bin(<span class="string">"content-length-bin"</span>).unwrap(), <span class="string">"11"</span>); |
| <span class="macro">assert_eq!</span>(map.get_bin(<span class="string">"x-hello-bin"</span>).unwrap(), <span class="string">"1"</span>); |
| |
| <span class="comment">// Attempting to read a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append(<span class="string">"host"</span>, <span class="string">"world"</span>.parse().unwrap()); |
| <span class="macro">assert!</span>(!map.entry_bin(<span class="string">"host"</span>).is_ok()); |
| <span class="macro">assert!</span>(!map.entry_bin(<span class="string">"host"</span>.to_string()).is_ok()); |
| <span class="macro">assert!</span>(!map.entry_bin(<span class="kw-2">&</span>(<span class="string">"host"</span>.to_string())).is_ok()); |
| |
| <span class="comment">// Attempting to read an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(!map.entry_bin(<span class="string">"host{}-bin"</span>).is_ok()); |
| <span class="macro">assert!</span>(!map.entry_bin(<span class="string">"host{}-bin"</span>.to_string()).is_ok()); |
| <span class="macro">assert!</span>(!map.entry_bin(<span class="kw-2">&</span>(<span class="string">"host{}-bin"</span>.to_string())).is_ok());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.insert" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#1001-1006">source</a><h4 class="code-header">pub fn <a href="#method.insert" class="fnname">insert</a><K>(<br> &mut self,<br> key: K,<br> val: <a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Ascii><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Ascii>><span class="where fmt-newline">where<br> K: IntoMetadataKey<Ascii>,</span></h4></section></summary><div class="docblock"><p>Inserts an ascii key-value pair into the map. To insert a binary entry, |
| use <code>insert_bin</code>.</p> |
| <p>This method panics when the given key is a string and it cannot be |
| converted to a MetadataKey<Ascii>.</p> |
| <p>If the map did not previously have this key present, then <code>None</code> is |
| returned.</p> |
| <p>If the map did have this key present, the new value is associated with |
| the key and all previous values are removed. <strong>Note</strong> that only a single |
| one of the previous values is returned. If there are multiple values |
| that have been previously associated with the key, then the first one is |
| returned. See <code>insert_mult</code> on <code>OccupiedEntry</code> for an API that returns |
| all values.</p> |
| <p>The key is not updated, though; this matters for types that can be <code>==</code> |
| without being identical.</p> |
| <h5 id="examples-24"><a href="#examples-24">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="macro">assert!</span>(map.insert(<span class="string">"x-host"</span>, <span class="string">"world"</span>.parse().unwrap()).is_none()); |
| <span class="macro">assert!</span>(!map.is_empty()); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>prev = map.insert(<span class="string">"x-host"</span>, <span class="string">"earth"</span>.parse().unwrap()).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="string">"world"</span>, prev);</code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="comment">// Trying to insert a key that is not valid panics. |
| </span>map.insert(<span class="string">"x{}host"</span>, <span class="string">"world"</span>.parse().unwrap());</code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="comment">// Trying to insert a key that is binary panics (use insert_bin). |
| </span>map.insert(<span class="string">"x-host-bin"</span>, <span class="string">"world"</span>.parse().unwrap());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.insert_bin" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#1038-1047">source</a><h4 class="code-header">pub fn <a href="#method.insert_bin" class="fnname">insert_bin</a><K>(<br> &mut self,<br> key: K,<br> val: <a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Binary><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Binary>><span class="where fmt-newline">where<br> K: IntoMetadataKey<Binary>,</span></h4></section></summary><div class="docblock"><p>Like insert, but for Binary keys (for example “trace-proto-bin”).</p> |
| <p>This method panics when the given key is a string and it cannot be |
| converted to a MetadataKey<Binary>.</p> |
| <h5 id="examples-25"><a href="#examples-25">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="macro">assert!</span>(map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)).is_none()); |
| <span class="macro">assert!</span>(!map.is_empty()); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>prev = map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"earth"</span>)).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="string">"world"</span>, prev);</code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::default(); |
| <span class="comment">// Attempting to add a binary metadata entry with an invalid name |
| </span>map.insert_bin(<span class="string">"trace-proto"</span>, MetadataValue::from_bytes(<span class="string">b"hello"</span>)); <span class="comment">// This line panics!</span></code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="comment">// Trying to insert a key that is not valid panics. |
| </span>map.insert_bin(<span class="string">"x{}host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); <span class="comment">// This line panics!</span></code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.append" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#1092-1097">source</a><h4 class="code-header">pub fn <a href="#method.append" class="fnname">append</a><K>(&mut self, key: K, value: <a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Ascii>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> K: IntoMetadataKey<Ascii>,</span></h4></section></summary><div class="docblock"><p>Inserts an ascii key-value pair into the map. To insert a binary entry, |
| use <code>append_bin</code>.</p> |
| <p>This method panics when the given key is a string and it cannot be |
| converted to a MetadataKey<Ascii>.</p> |
| <p>If the map did not previously have this key present, then <code>false</code> is |
| returned.</p> |
| <p>If the map did have this key present, the new value is pushed to the end |
| of the list of values currently associated with the key. The key is not |
| updated, though; this matters for types that can be <code>==</code> without being |
| identical.</p> |
| <h5 id="examples-26"><a href="#examples-26">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="macro">assert!</span>(map.insert(<span class="string">"x-host"</span>, <span class="string">"world"</span>.parse().unwrap()).is_none()); |
| <span class="macro">assert!</span>(!map.is_empty()); |
| |
| map.append(<span class="string">"x-host"</span>, <span class="string">"earth"</span>.parse().unwrap()); |
| |
| <span class="kw">let </span>values = map.get_all(<span class="string">"x-host"</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>i = values.iter(); |
| <span class="macro">assert_eq!</span>(<span class="string">"world"</span>, <span class="kw-2">*</span>i.next().unwrap()); |
| <span class="macro">assert_eq!</span>(<span class="string">"earth"</span>, <span class="kw-2">*</span>i.next().unwrap());</code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="comment">// Trying to append a key that is not valid panics. |
| </span>map.append(<span class="string">"x{}host"</span>, <span class="string">"world"</span>.parse().unwrap()); <span class="comment">// This line panics!</span></code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="comment">// Trying to append a key that is binary panics (use append_bin). |
| </span>map.append(<span class="string">"x-host-bin"</span>, <span class="string">"world"</span>.parse().unwrap()); <span class="comment">// This line panics!</span></code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.append_bin" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#1133-1138">source</a><h4 class="code-header">pub fn <a href="#method.append_bin" class="fnname">append_bin</a><K>(&mut self, key: K, value: <a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Binary>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a><span class="where fmt-newline">where<br> K: IntoMetadataKey<Binary>,</span></h4></section></summary><div class="docblock"><p>Like append, but for binary keys (for example “trace-proto-bin”).</p> |
| <p>This method panics when the given key is a string and it cannot be |
| converted to a MetadataKey<Binary>.</p> |
| <h5 id="examples-27"><a href="#examples-27">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="macro">assert!</span>(map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)).is_none()); |
| <span class="macro">assert!</span>(!map.is_empty()); |
| |
| map.append_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"earth"</span>)); |
| |
| <span class="kw">let </span>values = map.get_all_bin(<span class="string">"trace-proto-bin"</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>i = values.iter(); |
| <span class="macro">assert_eq!</span>(<span class="string">"world"</span>, <span class="kw-2">*</span>i.next().unwrap()); |
| <span class="macro">assert_eq!</span>(<span class="string">"earth"</span>, <span class="kw-2">*</span>i.next().unwrap());</code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="comment">// Trying to append a key that is not valid panics. |
| </span>map.append_bin(<span class="string">"x{}host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); <span class="comment">// This line panics!</span></code></pre></div> |
| |
| <div class="example-wrap should_panic"><div class='tooltip'>ⓘ</div><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| <span class="comment">// Trying to append a key that is ascii panics (use append). |
| </span>map.append_bin(<span class="string">"x-host"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); <span class="comment">// This line panics!</span></code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.remove" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#1173-1178">source</a><h4 class="code-header">pub fn <a href="#method.remove" class="fnname">remove</a><K>(&mut self, key: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Ascii>><span class="where fmt-newline">where<br> K: AsMetadataKey<Ascii>,</span></h4></section></summary><div class="docblock"><p>Removes an ascii key from the map, returning the value associated with |
| the key. To remove a binary key, use <code>remove_bin</code>.</p> |
| <p>Returns <code>None</code> if the map does not contain the key. If there are |
| multiple values associated with the key, then the first one is returned. |
| See <code>remove_entry_mult</code> on <code>OccupiedEntry</code> for an API that yields all |
| values.</p> |
| <h5 id="examples-28"><a href="#examples-28">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| map.insert(<span class="string">"x-host"</span>, <span class="string">"hello.world"</span>.parse().unwrap()); |
| |
| <span class="kw">let </span>prev = map.remove(<span class="string">"x-host"</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="string">"hello.world"</span>, prev); |
| |
| <span class="macro">assert!</span>(map.remove(<span class="string">"x-host"</span>).is_none()); |
| |
| <span class="comment">// Attempting to remove a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append_bin(<span class="string">"host-bin"</span>, MetadataValue::from_bytes(<span class="string">b"world"</span>)); |
| <span class="macro">assert!</span>(map.remove(<span class="string">"host-bin"</span>).is_none()); |
| <span class="macro">assert!</span>(map.remove(<span class="string">"host-bin"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.remove(<span class="kw-2">&</span>(<span class="string">"host-bin"</span>.to_string())).is_none()); |
| |
| <span class="comment">// Attempting to remove an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.remove(<span class="string">"host{}"</span>).is_none()); |
| <span class="macro">assert!</span>(map.remove(<span class="string">"host{}"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.remove(<span class="kw-2">&</span>(<span class="string">"host{}"</span>.to_string())).is_none());</code></pre></div> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.remove_bin" class="method has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#1207-1212">source</a><h4 class="code-header">pub fn <a href="#method.remove_bin" class="fnname">remove_bin</a><K>(&mut self, key: K) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.MetadataValue.html" title="struct tonic::metadata::MetadataValue">MetadataValue</a><Binary>><span class="where fmt-newline">where<br> K: AsMetadataKey<Binary>,</span></h4></section></summary><div class="docblock"><p>Like remove, but for Binary keys (for example “trace-proto-bin”).</p> |
| <h5 id="examples-29"><a href="#examples-29">Examples</a></h5> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>map = MetadataMap::new(); |
| map.insert_bin(<span class="string">"trace-proto-bin"</span>, MetadataValue::from_bytes(<span class="string">b"hello.world"</span>)); |
| |
| <span class="kw">let </span>prev = map.remove_bin(<span class="string">"trace-proto-bin"</span>).unwrap(); |
| <span class="macro">assert_eq!</span>(<span class="string">"hello.world"</span>, prev); |
| |
| <span class="macro">assert!</span>(map.remove_bin(<span class="string">"trace-proto-bin"</span>).is_none()); |
| |
| <span class="comment">// Attempting to remove a key of the wrong type fails by not |
| // finding anything. |
| </span>map.append(<span class="string">"host"</span>, <span class="string">"world"</span>.parse().unwrap()); |
| <span class="macro">assert!</span>(map.remove_bin(<span class="string">"host"</span>).is_none()); |
| <span class="macro">assert!</span>(map.remove_bin(<span class="string">"host"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.remove_bin(<span class="kw-2">&</span>(<span class="string">"host"</span>.to_string())).is_none()); |
| |
| <span class="comment">// Attempting to remove an invalid key string fails by not |
| // finding anything. |
| </span><span class="macro">assert!</span>(map.remove_bin(<span class="string">"host{}-bin"</span>).is_none()); |
| <span class="macro">assert!</span>(map.remove_bin(<span class="string">"host{}-bin"</span>.to_string()).is_none()); |
| <span class="macro">assert!</span>(map.remove_bin(<span class="kw-2">&</span>(<span class="string">"host{}-bin"</span>.to_string())).is_none());</code></pre></div> |
| </div></details></div></details></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Clone-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#34">source</a><a href="#impl-Clone-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#34">source</a><a href="#method.clone" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone" class="fnname">clone</a>(&self) -> <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/clone.rs.html#132-134">source</a></span><a href="#method.clone_from" class="anchor"></a><h4 class="code-header">const fn <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from" class="fnname">clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#34">source</a><a href="#impl-Debug-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#34">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Default-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#34">source</a><a href="#impl-Default-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.default" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tonic/metadata/map.rs.html#34">source</a><a href="#method.default" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default" class="fnname">default</a>() -> <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h4></section></summary><div class='docblock'>Returns the “default value” for a type. <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default">Read more</a></div></details></div></details></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><section id="impl-RefUnwindSafe-for-MetadataMap" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section><section id="impl-Send-for-MetadataMap" class="impl has-srclink"><a href="#impl-Send-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section><section id="impl-Sync-for-MetadataMap" class="impl has-srclink"><a href="#impl-Sync-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section><section id="impl-Unpin-for-MetadataMap" class="impl has-srclink"><a href="#impl-Unpin-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section><section id="impl-UnwindSafe-for-MetadataMap" class="impl has-srclink"><a href="#impl-UnwindSafe-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.MetadataMap.html" title="struct tonic::metadata::MetadataMap">MetadataMap</a></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#200">source</a><a href="#impl-Any-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#201">source</a><a href="#method.type_id" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a><a href="#impl-Borrow%3CT%3E-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213">source</a></span><a href="#method.borrow" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220">source</a><a href="#impl-BorrowMut%3CT%3E-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#221">source</a></span><a href="#method.borrow_mut" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#733">source</a><a href="#impl-From%3CT%3E-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#736">source</a></span><a href="#method.from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Instrument-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="../../src/tracing/instrument.rs.html#276">source</a><a href="#impl-Instrument-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../../tracing/instrument/trait.Instrument.html" title="trait tracing::instrument::Instrument">Instrument</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.instrument" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing/instrument.rs.html#82">source</a><a href="#method.instrument" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.Instrument.html#method.instrument" class="fnname">instrument</a>(self, span: <a class="struct" href="../../tracing/span/struct.Span.html" title="struct tracing::span::Span">Span</a>) -> <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span></h4></section></summary><div class='docblock'>Instruments this type with the provided <a href="../../tracing/span/struct.Span.html" title="Span"><code>Span</code></a>, returning an |
| <code>Instrumented</code> wrapper. <a href="../../tracing/instrument/trait.Instrument.html#method.instrument">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.in_current_span" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing/instrument.rs.html#121">source</a><a href="#method.in_current_span" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.Instrument.html#method.in_current_span" class="fnname">in_current_span</a>(self) -> <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span></h4></section></summary><div class='docblock'>Instruments this type with the <a href="../../tracing/span/struct.Span.html#method.current">current</a> <a href="../../tracing/span/struct.Span.html"><code>Span</code></a>, returning an |
| <code>Instrumented</code> wrapper. <a href="../../tracing/instrument/trait.Instrument.html#method.in_current_span">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Instrument-for-MetadataMap-1" class="impl has-srclink"><a class="srclink rightside" href="../../src/tracing_futures/lib.rs.html#273">source</a><a href="#impl-Instrument-for-MetadataMap-1" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../../tracing_futures/trait.Instrument.html" title="trait tracing_futures::Instrument">Instrument</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.instrument-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing_futures/lib.rs.html#154">source</a><a href="#method.instrument-1" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing_futures/trait.Instrument.html#method.instrument" class="fnname">instrument</a>(self, span: <a class="struct" href="../../tracing/span/struct.Span.html" title="struct tracing::span::Span">Span</a>) -> <a class="struct" href="../../tracing_futures/struct.Instrumented.html" title="struct tracing_futures::Instrumented">Instrumented</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing_futures/struct.Instrumented.html" title="struct tracing_futures::Instrumented">Instrumented</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing_futures/struct.Instrumented.html" title="struct tracing_futures::Instrumented">Instrumented</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span></h4></section></summary><div class='docblock'>Instruments this type with the provided <code>Span</code>, returning an |
| <code>Instrumented</code> wrapper. <a href="../../tracing_futures/trait.Instrument.html#method.instrument">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.in_current_span-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing_futures/lib.rs.html#191">source</a><a href="#method.in_current_span-1" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing_futures/trait.Instrument.html#method.in_current_span" class="fnname">in_current_span</a>(self) -> <a class="struct" href="../../tracing_futures/struct.Instrumented.html" title="struct tracing_futures::Instrumented">Instrumented</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing_futures/struct.Instrumented.html" title="struct tracing_futures::Instrumented">Instrumented</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing_futures/struct.Instrumented.html" title="struct tracing_futures::Instrumented">Instrumented</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span></h4></section></summary><div class='docblock'>Instruments this type with the <a href="https://docs.rs/tracing/latest/tracing/span/struct.Span.html#method.current">current</a> <code>Span</code>, returning an |
| <code>Instrumented</code> wrapper. <a href="../../tracing_futures/trait.Instrument.html#method.in_current_span">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#717">source</a><a href="#impl-Into%3CU%3E-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#725">source</a></span><a href="#method.into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p> |
| <p>That is, this conversion is whatever the implementation of |
| <code><a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="From">From</a><T> for U</code> chooses to do.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToOwned-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#83">source</a><a href="#impl-ToOwned-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Owned" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#88">source</a><a href="#method.to_owned" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fnname">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/alloc/borrow.rs.html#92">source</a><a href="#method.clone_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fnname">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/nightly/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#775">source</a><a href="#impl-TryFrom%3CU%3E-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error-1" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#781">source</a></span><a href="#method.try_from" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#760">source</a><a href="#impl-TryInto%3CU%3E-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</span></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><a href="#associatedtype.Error" class="anchor"></a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#766">source</a></span><a href="#method.try_into" class="anchor"></a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-VZip%3CV%3E-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="../../src/ppv_lite86/types.rs.html#221">source</a><a href="#impl-VZip%3CV%3E-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<V, T> <a class="trait" href="../../ppv_lite86/types/trait.VZip.html" title="trait ppv_lite86::types::VZip">VZip</a><V> for T<span class="where fmt-newline">where<br> V: <a class="trait" href="../../ppv_lite86/types/trait.MultiLane.html" title="trait ppv_lite86::types::MultiLane">MultiLane</a><T>,</span></h3></section></summary><div class="impl-items"><section id="method.vzip" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/ppv_lite86/types.rs.html#226">source</a><a href="#method.vzip" class="anchor"></a><h4 class="code-header">fn <a href="../../ppv_lite86/types/trait.VZip.html#tymethod.vzip" class="fnname">vzip</a>(self) -> V</h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-WithSubscriber-for-MetadataMap" class="impl has-srclink"><a class="srclink rightside" href="../../src/tracing/instrument.rs.html#334">source</a><a href="#impl-WithSubscriber-for-MetadataMap" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../../tracing/instrument/trait.WithSubscriber.html" title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing/instrument.rs.html#169-171">source</a><a href="#method.with_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.WithSubscriber.html#method.with_subscriber" class="fnname">with_subscriber</a><S>(self, subscriber: S) -> <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span><span class="where fmt-newline">where<br> S: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>,</span></h4></section></summary><div class='docblock'>Attaches the provided <a href="../../tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <a href="../../tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../../tracing/instrument/trait.WithSubscriber.html#method.with_subscriber">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_current_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing/instrument.rs.html#221">source</a><a href="#method.with_current_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber" class="fnname">with_current_subscriber</a>(self) -> <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span></h4></section></summary><div class='docblock'>Attaches the current <a href="../../tracing/dispatcher/index.html#setting-the-default-subscriber">default</a> <a href="../../tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <a href="../../tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-WithSubscriber-for-MetadataMap-1" class="impl has-srclink"><a class="srclink rightside" href="../../src/tracing_futures/lib.rs.html#432">source</a><a href="#impl-WithSubscriber-for-MetadataMap-1" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../../tracing_futures/trait.WithSubscriber.html" title="trait tracing_futures::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_subscriber-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing_futures/lib.rs.html#213-215">source</a><a href="#method.with_subscriber-1" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing_futures/trait.WithSubscriber.html#method.with_subscriber" class="fnname">with_subscriber</a><S>(self, subscriber: S) -> <a class="struct" href="../../tracing_futures/struct.WithDispatch.html" title="struct tracing_futures::WithDispatch">WithDispatch</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing_futures/struct.WithDispatch.html" title="struct tracing_futures::WithDispatch">WithDispatch</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing_futures/struct.WithDispatch.html" title="struct tracing_futures::WithDispatch">WithDispatch</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span><span class="where fmt-newline">where<br> S: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>,</span></h4></section></summary><div class='docblock'>Attaches the provided <a href="https://docs.rs/tracing/latest/tracing/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <code>WithDispatch</code> wrapper. <a href="../../tracing_futures/trait.WithSubscriber.html#method.with_subscriber">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_current_subscriber-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../../src/tracing_futures/lib.rs.html#237">source</a><a href="#method.with_current_subscriber-1" class="anchor"></a><h4 class="code-header">fn <a href="../../tracing_futures/trait.WithSubscriber.html#method.with_current_subscriber" class="fnname">with_current_subscriber</a>(self) -> <a class="struct" href="../../tracing_futures/struct.WithDispatch.html" title="struct tracing_futures::WithDispatch">WithDispatch</a><Self><span class="notable-traits"><span class="notable-traits-tooltip">ⓘ<span class="notable-traits-tooltiptext"><span class="docblock"><span class="notable">Notable traits for <a class="struct" href="../../tracing_futures/struct.WithDispatch.html" title="struct tracing_futures::WithDispatch">WithDispatch</a><T></span><code class="content"><span class="where fmt-newline">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="../../tracing_futures/struct.WithDispatch.html" title="struct tracing_futures::WithDispatch">WithDispatch</a><T><span class="where fmt-newline">where<br> T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</span></span><span class="where fmt-newline"> type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>;</span></code></span></span></span></span></h4></section></summary><div class='docblock'>Attaches the current <a href="https://docs.rs/tracing/latest/tracing/dispatcher/index.html#setting-the-default-subscriber">default</a> <a href="https://docs.rs/tracing/latest/tracing/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <code>WithDispatch</code> wrapper. <a href="../../tracing_futures/trait.WithSubscriber.html#method.with_current_subscriber">Read more</a></div></details></div></details></div></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="tonic" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
