| <!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="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/tonic-0.6.2/src/server/grpc.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>grpc.rs - source</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="../../../source-script.js"></script><script defer src="../../../source-files.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 source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><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></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../tonic/index.html"> |
| <img src="https://raw.githubusercontent.com/tokio-rs/website/master/public/img/icons/tonic.svg" alt="logo"></a><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="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| <span id="335">335</span> |
| <span id="336">336</span> |
| <span id="337">337</span> |
| <span id="338">338</span> |
| <span id="339">339</span> |
| <span id="340">340</span> |
| <span id="341">341</span> |
| <span id="342">342</span> |
| <span id="343">343</span> |
| <span id="344">344</span> |
| <span id="345">345</span> |
| <span id="346">346</span> |
| <span id="347">347</span> |
| <span id="348">348</span> |
| <span id="349">349</span> |
| <span id="350">350</span> |
| <span id="351">351</span> |
| <span id="352">352</span> |
| <span id="353">353</span> |
| <span id="354">354</span> |
| <span id="355">355</span> |
| <span id="356">356</span> |
| <span id="357">357</span> |
| <span id="358">358</span> |
| <span id="359">359</span> |
| <span id="360">360</span> |
| <span id="361">361</span> |
| <span id="362">362</span> |
| <span id="363">363</span> |
| <span id="364">364</span> |
| <span id="365">365</span> |
| <span id="366">366</span> |
| <span id="367">367</span> |
| <span id="368">368</span> |
| <span id="369">369</span> |
| <span id="370">370</span> |
| <span id="371">371</span> |
| <span id="372">372</span> |
| <span id="373">373</span> |
| <span id="374">374</span> |
| <span id="375">375</span> |
| <span id="376">376</span> |
| <span id="377">377</span> |
| <span id="378">378</span> |
| <span id="379">379</span> |
| <span id="380">380</span> |
| <span id="381">381</span> |
| <span id="382">382</span> |
| <span id="383">383</span> |
| <span id="384">384</span> |
| <span id="385">385</span> |
| <span id="386">386</span> |
| <span id="387">387</span> |
| <span id="388">388</span> |
| <span id="389">389</span> |
| <span id="390">390</span> |
| <span id="391">391</span> |
| <span id="392">392</span> |
| <span id="393">393</span> |
| <span id="394">394</span> |
| <span id="395">395</span> |
| <span id="396">396</span> |
| <span id="397">397</span> |
| <span id="398">398</span> |
| <span id="399">399</span> |
| <span id="400">400</span> |
| <span id="401">401</span> |
| <span id="402">402</span> |
| <span id="403">403</span> |
| <span id="404">404</span> |
| <span id="405">405</span> |
| <span id="406">406</span> |
| <span id="407">407</span> |
| <span id="408">408</span> |
| <span id="409">409</span> |
| <span id="410">410</span> |
| <span id="411">411</span> |
| <span id="412">412</span> |
| <span id="413">413</span> |
| <span id="414">414</span> |
| <span id="415">415</span> |
| <span id="416">416</span> |
| <span id="417">417</span> |
| <span id="418">418</span> |
| <span id="419">419</span> |
| <span id="420">420</span> |
| <span id="421">421</span> |
| <span id="422">422</span> |
| <span id="423">423</span> |
| <span id="424">424</span> |
| <span id="425">425</span> |
| <span id="426">426</span> |
| <span id="427">427</span> |
| <span id="428">428</span> |
| <span id="429">429</span> |
| <span id="430">430</span> |
| <span id="431">431</span> |
| <span id="432">432</span> |
| <span id="433">433</span> |
| <span id="434">434</span> |
| <span id="435">435</span> |
| <span id="436">436</span> |
| <span id="437">437</span> |
| <span id="438">438</span> |
| <span id="439">439</span> |
| <span id="440">440</span> |
| <span id="441">441</span> |
| <span id="442">442</span> |
| <span id="443">443</span> |
| <span id="444">444</span> |
| <span id="445">445</span> |
| <span id="446">446</span> |
| <span id="447">447</span> |
| <span id="448">448</span> |
| <span id="449">449</span> |
| <span id="450">450</span> |
| <span id="451">451</span> |
| <span id="452">452</span> |
| <span id="453">453</span> |
| <span id="454">454</span> |
| <span id="455">455</span> |
| <span id="456">456</span> |
| <span id="457">457</span> |
| <span id="458">458</span> |
| <span id="459">459</span> |
| <span id="460">460</span> |
| <span id="461">461</span> |
| <span id="462">462</span> |
| <span id="463">463</span> |
| <span id="464">464</span> |
| <span id="465">465</span> |
| <span id="466">466</span> |
| <span id="467">467</span> |
| <span id="468">468</span> |
| <span id="469">469</span> |
| <span id="470">470</span> |
| <span id="471">471</span> |
| <span id="472">472</span> |
| <span id="473">473</span> |
| </pre><pre class="rust"><code><span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">use </span><span class="kw">crate</span>::codec::compression::{ |
| CompressionEncoding, EnabledCompressionEncodings, SingleMessageCompressionOverride, |
| }; |
| <span class="kw">use crate</span>::{ |
| body::BoxBody, |
| codec::{encode_server, Codec, Streaming}, |
| server::{ClientStreamingService, ServerStreamingService, StreamingService, UnaryService}, |
| Code, Request, Status, |
| }; |
| <span class="kw">use </span>futures_core::TryStream; |
| <span class="kw">use </span>futures_util::{future, stream, TryStreamExt}; |
| <span class="kw">use </span>http_body::Body; |
| <span class="kw">use </span>std::fmt; |
| |
| <span class="macro">macro_rules! </span>t { |
| (<span class="macro-nonterminal">$result</span>:expr) => { |
| <span class="kw">match </span><span class="macro-nonterminal">$result </span>{ |
| <span class="prelude-val">Ok</span>(value) => value, |
| <span class="prelude-val">Err</span>(status) => <span class="kw">return </span>status.to_http(), |
| } |
| }; |
| } |
| |
| <span class="doccomment">/// A gRPC Server handler. |
| /// |
| /// This will wrap some inner [`Codec`] and provide utilities to handle |
| /// inbound unary, client side streaming, server side streaming, and |
| /// bi-directional streaming. |
| /// |
| /// Each request handler method accepts some service that implements the |
| /// corresponding service trait and a http request that contains some body that |
| /// implements some [`Body`]. |
| </span><span class="kw">pub struct </span>Grpc<T> { |
| codec: T, |
| <span class="doccomment">/// Which compression encodings does the server accept for requests? |
| </span><span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_compression_encodings: EnabledCompressionEncodings, |
| <span class="doccomment">/// Which compression encodings might the server use for responses. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>send_compression_encodings: EnabledCompressionEncodings, |
| } |
| |
| <span class="kw">impl</span><T> Grpc<T> |
| <span class="kw">where |
| </span>T: Codec, |
| { |
| <span class="doccomment">/// Creates a new gRPC server with the provided [`Codec`]. |
| </span><span class="kw">pub fn </span>new(codec: T) -> <span class="self">Self </span>{ |
| <span class="self">Self </span>{ |
| codec, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_compression_encodings: EnabledCompressionEncodings::default(), |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>send_compression_encodings: EnabledCompressionEncodings::default(), |
| } |
| } |
| |
| <span class="doccomment">/// Enable accepting `gzip` compressed requests. |
| /// |
| /// If a request with an unsupported encoding is received the server will respond with |
| /// [`Code::UnUnimplemented`](crate::Code). |
| /// |
| /// # Example |
| /// |
| /// The most common way of using this is through a server generated by tonic-build: |
| /// |
| /// ```rust |
| /// # struct Svc; |
| /// # struct ExampleServer<T>(T); |
| /// # impl<T> ExampleServer<T> { |
| /// # fn new(svc: T) -> Self { Self(svc) } |
| /// # fn accept_gzip(self) -> Self { self } |
| /// # } |
| /// # #[tonic::async_trait] |
| /// # trait Example {} |
| /// |
| /// #[tonic::async_trait] |
| /// impl Example for Svc { |
| /// // ... |
| /// } |
| /// |
| /// let service = ExampleServer::new(Svc).accept_gzip(); |
| /// ``` |
| </span><span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"compression"</span>)))] |
| </span><span class="kw">pub fn </span>accept_gzip(<span class="kw-2">mut </span><span class="self">self</span>) -> <span class="self">Self </span>{ |
| <span class="self">self</span>.accept_compression_encodings.enable_gzip(); |
| <span class="self">self |
| </span>} |
| |
| <span class="attribute">#[doc(hidden)] |
| #[cfg(not(feature = <span class="string">"compression"</span>))] |
| </span><span class="kw">pub fn </span>accept_gzip(<span class="self">self</span>) -> <span class="self">Self </span>{ |
| <span class="macro">panic!</span>(<span class="string">"`accept_gzip` called on a server but the `compression` feature is not enabled on tonic"</span>); |
| } |
| |
| <span class="doccomment">/// Enable sending `gzip` compressed responses. |
| /// |
| /// Requires the client to also support receiving compressed responses. |
| /// |
| /// # Example |
| /// |
| /// The most common way of using this is through a server generated by tonic-build: |
| /// |
| /// ```rust |
| /// # struct Svc; |
| /// # struct ExampleServer<T>(T); |
| /// # impl<T> ExampleServer<T> { |
| /// # fn new(svc: T) -> Self { Self(svc) } |
| /// # fn send_gzip(self) -> Self { self } |
| /// # } |
| /// # #[tonic::async_trait] |
| /// # trait Example {} |
| /// |
| /// #[tonic::async_trait] |
| /// impl Example for Svc { |
| /// // ... |
| /// } |
| /// |
| /// let service = ExampleServer::new(Svc).send_gzip(); |
| /// ``` |
| </span><span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"compression"</span>)))] |
| </span><span class="kw">pub fn </span>send_gzip(<span class="kw-2">mut </span><span class="self">self</span>) -> <span class="self">Self </span>{ |
| <span class="self">self</span>.send_compression_encodings.enable_gzip(); |
| <span class="self">self |
| </span>} |
| |
| <span class="attribute">#[doc(hidden)] |
| #[cfg(not(feature = <span class="string">"compression"</span>))] |
| </span><span class="kw">pub fn </span>send_gzip(<span class="self">self</span>) -> <span class="self">Self </span>{ |
| <span class="macro">panic!</span>( |
| <span class="string">"`send_gzip` called on a server but the `compression` feature is not enabled on tonic" |
| </span>); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| #[doc(hidden)] |
| </span><span class="kw">pub fn </span>apply_compression_config( |
| <span class="self">self</span>, |
| accept_encodings: EnabledCompressionEncodings, |
| send_encodings: EnabledCompressionEncodings, |
| ) -> <span class="self">Self </span>{ |
| <span class="kw">let </span><span class="kw-2">mut </span>this = <span class="self">self</span>; |
| |
| <span class="kw">let </span>EnabledCompressionEncodings { gzip: accept_gzip } = accept_encodings; |
| <span class="kw">if </span>accept_gzip { |
| this = this.accept_gzip(); |
| } |
| |
| <span class="kw">let </span>EnabledCompressionEncodings { gzip: send_gzip } = send_encodings; |
| <span class="kw">if </span>send_gzip { |
| this = this.send_gzip(); |
| } |
| |
| this |
| } |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"compression"</span>))] |
| #[doc(hidden)] |
| #[allow(unused_variables)] |
| </span><span class="kw">pub fn </span>apply_compression_config(<span class="self">self</span>, accept_encodings: (), send_encodings: ()) -> <span class="self">Self </span>{ |
| <span class="self">self |
| </span>} |
| |
| <span class="doccomment">/// Handle a single unary gRPC request. |
| </span><span class="kw">pub async fn </span>unary<S, B>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| <span class="kw-2">mut </span>service: S, |
| req: http::Request<B>, |
| ) -> http::Response<BoxBody> |
| <span class="kw">where |
| </span>S: UnaryService<T::Decode, Response = T::Encode>, |
| B: Body + Send + <span class="lifetime">'static</span>, |
| B::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| { |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>accept_encoding = CompressionEncoding::from_accept_encoding_header( |
| req.headers(), |
| <span class="self">self</span>.send_compression_encodings, |
| ); |
| |
| <span class="kw">let </span>request = <span class="kw">match </span><span class="self">self</span>.map_request_unary(req).<span class="kw">await </span>{ |
| <span class="prelude-val">Ok</span>(r) => r, |
| <span class="prelude-val">Err</span>(status) => { |
| <span class="kw">return </span><span class="self">self |
| </span>.map_response::<stream::Once<future::Ready<<span class="prelude-ty">Result</span><T::Encode, Status>>>>( |
| <span class="prelude-val">Err</span>(status), |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_encoding, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>SingleMessageCompressionOverride::default(), |
| ); |
| } |
| }; |
| |
| <span class="kw">let </span>response = service |
| .call(request) |
| .<span class="kw">await |
| </span>.map(|r| r.map(|m| stream::once(future::ok(m)))); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>compression_override = compression_override_from_response(<span class="kw-2">&</span>response); |
| |
| <span class="self">self</span>.map_response( |
| response, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_encoding, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>compression_override, |
| ) |
| } |
| |
| <span class="doccomment">/// Handle a server side streaming request. |
| </span><span class="kw">pub async fn </span>server_streaming<S, B>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| <span class="kw-2">mut </span>service: S, |
| req: http::Request<B>, |
| ) -> http::Response<BoxBody> |
| <span class="kw">where |
| </span>S: ServerStreamingService<T::Decode, Response = T::Encode>, |
| S::ResponseStream: Send + <span class="lifetime">'static</span>, |
| B: Body + Send + <span class="lifetime">'static</span>, |
| B::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| { |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>accept_encoding = CompressionEncoding::from_accept_encoding_header( |
| req.headers(), |
| <span class="self">self</span>.send_compression_encodings, |
| ); |
| |
| <span class="kw">let </span>request = <span class="kw">match </span><span class="self">self</span>.map_request_unary(req).<span class="kw">await </span>{ |
| <span class="prelude-val">Ok</span>(r) => r, |
| <span class="prelude-val">Err</span>(status) => { |
| <span class="kw">return </span><span class="self">self</span>.map_response::<S::ResponseStream>( |
| <span class="prelude-val">Err</span>(status), |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_encoding, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>SingleMessageCompressionOverride::default(), |
| ); |
| } |
| }; |
| |
| <span class="kw">let </span>response = service.call(request).<span class="kw">await</span>; |
| |
| <span class="self">self</span>.map_response( |
| response, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_encoding, |
| <span class="comment">// disabling compression of individual stream items must be done on |
| // the items themselves |
| </span><span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>SingleMessageCompressionOverride::default(), |
| ) |
| } |
| |
| <span class="doccomment">/// Handle a client side streaming gRPC request. |
| </span><span class="kw">pub async fn </span>client_streaming<S, B>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| <span class="kw-2">mut </span>service: S, |
| req: http::Request<B>, |
| ) -> http::Response<BoxBody> |
| <span class="kw">where |
| </span>S: ClientStreamingService<T::Decode, Response = T::Encode>, |
| B: Body + Send + <span class="lifetime">'static</span>, |
| B::Error: Into<<span class="kw">crate</span>::Error> + Send + <span class="lifetime">'static</span>, |
| { |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>accept_encoding = CompressionEncoding::from_accept_encoding_header( |
| req.headers(), |
| <span class="self">self</span>.send_compression_encodings, |
| ); |
| |
| <span class="kw">let </span>request = <span class="macro">t!</span>(<span class="self">self</span>.map_request_streaming(req)); |
| |
| <span class="kw">let </span>response = service |
| .call(request) |
| .<span class="kw">await |
| </span>.map(|r| r.map(|m| stream::once(future::ok(m)))); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>compression_override = compression_override_from_response(<span class="kw-2">&</span>response); |
| |
| <span class="self">self</span>.map_response( |
| response, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_encoding, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>compression_override, |
| ) |
| } |
| |
| <span class="doccomment">/// Handle a bi-directional streaming gRPC request. |
| </span><span class="kw">pub async fn </span>streaming<S, B>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| <span class="kw-2">mut </span>service: S, |
| req: http::Request<B>, |
| ) -> http::Response<BoxBody> |
| <span class="kw">where |
| </span>S: StreamingService<T::Decode, Response = T::Encode> + Send, |
| S::ResponseStream: Send + <span class="lifetime">'static</span>, |
| B: Body + Send + <span class="lifetime">'static</span>, |
| B::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| { |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>accept_encoding = CompressionEncoding::from_accept_encoding_header( |
| req.headers(), |
| <span class="self">self</span>.send_compression_encodings, |
| ); |
| |
| <span class="kw">let </span>request = <span class="macro">t!</span>(<span class="self">self</span>.map_request_streaming(req)); |
| |
| <span class="kw">let </span>response = service.call(request).<span class="kw">await</span>; |
| |
| <span class="self">self</span>.map_response( |
| response, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_encoding, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>SingleMessageCompressionOverride::default(), |
| ) |
| } |
| |
| <span class="kw">async fn </span>map_request_unary<B>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| request: http::Request<B>, |
| ) -> <span class="prelude-ty">Result</span><Request<T::Decode>, Status> |
| <span class="kw">where |
| </span>B: Body + Send + <span class="lifetime">'static</span>, |
| B::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| { |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>request_compression_encoding = <span class="self">self</span>.request_encoding_if_supported(<span class="kw-2">&</span>request)<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span>(parts, body) = request.into_parts(); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>stream = |
| Streaming::new_request(<span class="self">self</span>.codec.decoder(), body, request_compression_encoding); |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"compression"</span>))] |
| </span><span class="kw">let </span>stream = Streaming::new_request(<span class="self">self</span>.codec.decoder(), body); |
| |
| <span class="macro">futures_util::pin_mut!</span>(stream); |
| |
| <span class="kw">let </span>message = stream |
| .try_next() |
| .<span class="kw">await</span><span class="question-mark">? |
| </span>.ok_or_else(|| Status::new(Code::Internal, <span class="string">"Missing request message."</span>))<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>req = Request::from_http_parts(parts, message); |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(trailers) = stream.trailers().<span class="kw">await</span><span class="question-mark">? </span>{ |
| req.metadata_mut().merge(trailers); |
| } |
| |
| <span class="prelude-val">Ok</span>(req) |
| } |
| |
| <span class="kw">fn </span>map_request_streaming<B>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| request: http::Request<B>, |
| ) -> <span class="prelude-ty">Result</span><Request<Streaming<T::Decode>>, Status> |
| <span class="kw">where |
| </span>B: Body + Send + <span class="lifetime">'static</span>, |
| B::Error: Into<<span class="kw">crate</span>::Error> + Send, |
| { |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>encoding = <span class="self">self</span>.request_encoding_if_supported(<span class="kw-2">&</span>request)<span class="question-mark">?</span>; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">let </span>request = |
| request.map(|body| Streaming::new_request(<span class="self">self</span>.codec.decoder(), body, encoding)); |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"compression"</span>))] |
| </span><span class="kw">let </span>request = request.map(|body| Streaming::new_request(<span class="self">self</span>.codec.decoder(), body)); |
| |
| <span class="prelude-val">Ok</span>(Request::from_http(request)) |
| } |
| |
| <span class="kw">fn </span>map_response<B>( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| response: <span class="prelude-ty">Result</span><<span class="kw">crate</span>::Response<B>, Status>, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] </span>accept_encoding: <span class="prelude-ty">Option</span><CompressionEncoding>, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] </span>compression_override: SingleMessageCompressionOverride, |
| ) -> http::Response<BoxBody> |
| <span class="kw">where |
| </span>B: TryStream<<span class="prelude-val">Ok </span>= T::Encode, Error = Status> + Send + <span class="lifetime">'static</span>, |
| { |
| <span class="kw">let </span>response = <span class="kw">match </span>response { |
| <span class="prelude-val">Ok</span>(r) => r, |
| <span class="prelude-val">Err</span>(status) => <span class="kw">return </span>status.to_http(), |
| }; |
| |
| <span class="kw">let </span>(<span class="kw-2">mut </span>parts, body) = response.into_http().into_parts(); |
| |
| <span class="comment">// Set the content type |
| </span>parts.headers.insert( |
| http::header::CONTENT_TYPE, |
| http::header::HeaderValue::from_static(<span class="string">"application/grpc"</span>), |
| ); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">if let </span><span class="prelude-val">Some</span>(encoding) = accept_encoding { |
| <span class="comment">// Set the content encoding |
| </span>parts.headers.insert( |
| <span class="kw">crate</span>::codec::compression::ENCODING_HEADER, |
| encoding.into_header_value(), |
| ); |
| } |
| |
| <span class="kw">let </span>body = encode_server( |
| <span class="self">self</span>.codec.encoder(), |
| body.into_stream(), |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>accept_encoding, |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>compression_override, |
| ); |
| |
| http::Response::from_parts(parts, BoxBody::new(body)) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">fn </span>request_encoding_if_supported<B>( |
| <span class="kw-2">&</span><span class="self">self</span>, |
| request: <span class="kw-2">&</span>http::Request<B>, |
| ) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><CompressionEncoding>, Status> { |
| CompressionEncoding::from_encoding_header( |
| request.headers(), |
| <span class="self">self</span>.accept_compression_encodings, |
| ) |
| } |
| } |
| |
| <span class="kw">impl</span><T: fmt::Debug> fmt::Debug <span class="kw">for </span>Grpc<T> { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="kw">let </span><span class="kw-2">mut </span>f = f.debug_struct(<span class="string">"Grpc"</span>); |
| |
| f.field(<span class="string">"codec"</span>, <span class="kw-2">&</span><span class="self">self</span>.codec); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>f.field( |
| <span class="string">"accept_compression_encodings"</span>, |
| <span class="kw-2">&</span><span class="self">self</span>.accept_compression_encodings, |
| ); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span>f.field( |
| <span class="string">"send_compression_encodings"</span>, |
| <span class="kw-2">&</span><span class="self">self</span>.send_compression_encodings, |
| ); |
| |
| f.finish() |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"compression"</span>)] |
| </span><span class="kw">fn </span>compression_override_from_response<B, E>( |
| res: <span class="kw-2">&</span><span class="prelude-ty">Result</span><<span class="kw">crate</span>::Response<B>, E>, |
| ) -> SingleMessageCompressionOverride { |
| res.as_ref() |
| .ok() |
| .and_then(|response| { |
| response |
| .extensions() |
| .get::<SingleMessageCompressionOverride>() |
| .copied() |
| }) |
| .unwrap_or_default() |
| } |
| </code></pre></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> |