greptimedb/servers/prom_remote_write/fn.decompress_remote_write_body.html

<!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="Decompresses a remote-write body with the codec selected by `is_zstd`, bounded by the hard decoded-size cap and charged to the aggregate request-memory limiter."><title>decompress_remote_write_body in servers::prom_remote_write - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-1ed95124.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="servers" data-themes="" data-resource-suffix="" data-rustdoc-version="1.98.1 (48a229cea 2026-09-01)" data-channel="1.98.1" data-search-js="search-9944d736.js" data-stringdex-js="stringdex-2da4960a.js" data-settings-js="settings-170eb4bf.js" ><script src="../../static.files/storage-41dd4d93.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-417ebf0a.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc fn"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">decompress_remote_write_body</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../servers/index.html">servers</a><span class="version">1.4.0-alpha.0</span></h2></div><div class="sidebar-elems"><div id="rustdoc-modnav"><h2><a href="index.html">In servers::<wbr>prom_<wbr>remote_<wbr>write</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../index.html">servers</a>::<wbr><a href="index.html">prom_remote_write</a></div><h1>Function <span class="fn">decompress_<wbr>remote_<wbr>write_<wbr>body</span>&nbsp;<button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../src/servers/prom_remote_write/mod.rs.html#69-96">Source</a> </span></div><pre class="rust item-decl"><code>pub(crate) async fn decompress_remote_write_body(
    is_zstd: <a class="primitive" href="https://doc.rust-lang.org/1.98.1/std/primitive.bool.html">bool</a>,
    body: &amp;[<a class="primitive" href="https://doc.rust-lang.org/1.98.1/std/primitive.u8.html">u8</a>],
    limiter: &amp;<a class="struct" href="../request_memory_limiter/struct.ServerMemoryLimiter.html" title="struct servers::request_memory_limiter::ServerMemoryLimiter">ServerMemoryLimiter</a>,
) -&gt; <a class="type" href="../error/type.Result.html" title="type servers::error::Result">Result</a>&lt;<a class="struct" href="../prom_store/struct.ChargedBuffer.html" title="struct servers::prom_store::ChargedBuffer">ChargedBuffer</a>&gt;</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Decompresses a remote-write body with the codec selected by <code>is_zstd</code>,
bounded by the hard decoded-size cap and charged to the aggregate
request-memory limiter.</p>
<p>Due to vmagent’s limitation there is a chance that vmagent sends the
content-encoding header wrong, so decoding falls back to the other codec
when the first attempt fails on malformed input. Size-limit and quota
errors are final: the body either expanded beyond the cap under the
declared codec, or it could not be admitted, and the other codec cannot
produce a different outcome.</p>
<p>see <a href="https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5301">https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5301</a>
see <a href="https://github.com/GreptimeTeam/greptimedb/issues/3929">https://github.com/GreptimeTeam/greptimedb/issues/3929</a></p>
</div></details></section></div></main></body></html>