mirror of
https://github.com/searxng/searxng.git
synced 2026-05-08 02:13:51 +02:00
return42
1002 lines
107 KiB
HTML
1002 lines
107 KiB
HTML
<!doctype html>
|
||
<html class="no-js" lang="en" data-content_root="../../">
|
||
<head><meta charset="utf-8">
|
||
<meta name="viewport" content="width=device-width,initial-scale=1">
|
||
<meta name="color-scheme" content="light dark"><link rel="index" title="Index" href="../../genindex.html"><link rel="search" title="Search" href="../../search.html">
|
||
<link rel="prefetch" href="../../_static/searxng-wordmark.svg" as="image">
|
||
|
||
<!-- Generated with Sphinx 9.1.0 and Furo 2025.12.19 -->
|
||
<title>searx.cache - SearXNG Documentation (2026.5.7+ef6290c8c)</title>
|
||
<link rel="stylesheet" type="text/css" href="../../_static/pygments.css?v=d111a655" />
|
||
<link rel="stylesheet" type="text/css" href="../../_static/styles/furo.css?v=7bdb33bb" />
|
||
<link rel="stylesheet" type="text/css" href="../../_static/styles/furo-extensions.css?v=8dab3a3b" />
|
||
<link rel="stylesheet" type="text/css" href="../../_static/searxng.css?v=4b1b1f10" />
|
||
|
||
|
||
|
||
|
||
<style>
|
||
body {
|
||
--color-code-background: #f2f2f2;
|
||
--color-code-foreground: #1e1e1e;
|
||
|
||
}
|
||
@media not print {
|
||
body[data-theme="dark"] {
|
||
--color-code-background: #202020;
|
||
--color-code-foreground: #d0d0d0;
|
||
|
||
}
|
||
@media (prefers-color-scheme: dark) {
|
||
body:not([data-theme="light"]) {
|
||
--color-code-background: #202020;
|
||
--color-code-foreground: #d0d0d0;
|
||
|
||
}
|
||
}
|
||
}
|
||
</style></head>
|
||
<body>
|
||
|
||
<script>
|
||
document.body.dataset.theme = localStorage.getItem("theme") || "auto";
|
||
</script>
|
||
|
||
|
||
<svg xmlns="http://www.w3.org/2000/svg" style="display: none;">
|
||
<symbol id="svg-toc" viewBox="0 0 24 24">
|
||
<title>Contents</title>
|
||
<svg stroke="currentColor" fill="currentColor" stroke-width="0" viewBox="0 0 1024 1024">
|
||
<path d="M408 442h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8zm-8 204c0 4.4 3.6 8 8 8h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56zm504-486H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zm0 632H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zM115.4 518.9L271.7 642c5.8 4.6 14.4.5 14.4-6.9V388.9c0-7.4-8.5-11.5-14.4-6.9L115.4 505.1a8.74 8.74 0 0 0 0 13.8z"/>
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-menu" viewBox="0 0 24 24">
|
||
<title>Menu</title>
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather-menu">
|
||
<line x1="3" y1="12" x2="21" y2="12"></line>
|
||
<line x1="3" y1="6" x2="21" y2="6"></line>
|
||
<line x1="3" y1="18" x2="21" y2="18"></line>
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-arrow-right" viewBox="0 0 24 24">
|
||
<title>Expand</title>
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather-chevron-right">
|
||
<polyline points="9 18 15 12 9 6"></polyline>
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-sun" viewBox="0 0 24 24">
|
||
<title>Light mode</title>
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="feather-sun">
|
||
<circle cx="12" cy="12" r="5"></circle>
|
||
<line x1="12" y1="1" x2="12" y2="3"></line>
|
||
<line x1="12" y1="21" x2="12" y2="23"></line>
|
||
<line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line>
|
||
<line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line>
|
||
<line x1="1" y1="12" x2="3" y2="12"></line>
|
||
<line x1="21" y1="12" x2="23" y2="12"></line>
|
||
<line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line>
|
||
<line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line>
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-moon" viewBox="0 0 24 24">
|
||
<title>Dark mode</title>
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="icon-tabler-moon">
|
||
<path stroke="none" d="M0 0h24v24H0z" fill="none" />
|
||
<path d="M12 3c.132 0 .263 0 .393 0a7.5 7.5 0 0 0 7.92 12.446a9 9 0 1 1 -8.313 -12.454z" />
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-sun-with-moon" viewBox="0 0 24 24">
|
||
<title>Auto light/dark, in light mode</title>
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="1" stroke-linecap="round" stroke-linejoin="round"
|
||
class="icon-custom-derived-from-feather-sun-and-tabler-moon">
|
||
<path style="opacity: 50%" d="M 5.411 14.504 C 5.471 14.504 5.532 14.504 5.591 14.504 C 3.639 16.319 4.383 19.569 6.931 20.352 C 7.693 20.586 8.512 20.551 9.25 20.252 C 8.023 23.207 4.056 23.725 2.11 21.184 C 0.166 18.642 1.702 14.949 4.874 14.536 C 5.051 14.512 5.231 14.5 5.411 14.5 L 5.411 14.504 Z"/>
|
||
<line x1="14.5" y1="3.25" x2="14.5" y2="1.25"/>
|
||
<line x1="14.5" y1="15.85" x2="14.5" y2="17.85"/>
|
||
<line x1="10.044" y1="5.094" x2="8.63" y2="3.68"/>
|
||
<line x1="19" y1="14.05" x2="20.414" y2="15.464"/>
|
||
<line x1="8.2" y1="9.55" x2="6.2" y2="9.55"/>
|
||
<line x1="20.8" y1="9.55" x2="22.8" y2="9.55"/>
|
||
<line x1="10.044" y1="14.006" x2="8.63" y2="15.42"/>
|
||
<line x1="19" y1="5.05" x2="20.414" y2="3.636"/>
|
||
<circle cx="14.5" cy="9.55" r="3.6"/>
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-moon-with-sun" viewBox="0 0 24 24">
|
||
<title>Auto light/dark, in dark mode</title>
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="1" stroke-linecap="round" stroke-linejoin="round"
|
||
class="icon-custom-derived-from-feather-sun-and-tabler-moon">
|
||
<path d="M 8.282 7.007 C 8.385 7.007 8.494 7.007 8.595 7.007 C 5.18 10.184 6.481 15.869 10.942 17.24 C 12.275 17.648 13.706 17.589 15 17.066 C 12.851 22.236 5.91 23.143 2.505 18.696 C -0.897 14.249 1.791 7.786 7.342 7.063 C 7.652 7.021 7.965 7 8.282 7 L 8.282 7.007 Z"/>
|
||
<line style="opacity: 50%" x1="18" y1="3.705" x2="18" y2="2.5"/>
|
||
<line style="opacity: 50%" x1="18" y1="11.295" x2="18" y2="12.5"/>
|
||
<line style="opacity: 50%" x1="15.316" y1="4.816" x2="14.464" y2="3.964"/>
|
||
<line style="opacity: 50%" x1="20.711" y1="10.212" x2="21.563" y2="11.063"/>
|
||
<line style="opacity: 50%" x1="14.205" y1="7.5" x2="13.001" y2="7.5"/>
|
||
<line style="opacity: 50%" x1="21.795" y1="7.5" x2="23" y2="7.5"/>
|
||
<line style="opacity: 50%" x1="15.316" y1="10.184" x2="14.464" y2="11.036"/>
|
||
<line style="opacity: 50%" x1="20.711" y1="4.789" x2="21.563" y2="3.937"/>
|
||
<circle style="opacity: 50%" cx="18" cy="7.5" r="2.169"/>
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-pencil" viewBox="0 0 24 24">
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="icon-tabler-pencil-code">
|
||
<path d="M4 20h4l10.5 -10.5a2.828 2.828 0 1 0 -4 -4l-10.5 10.5v4" />
|
||
<path d="M13.5 6.5l4 4" />
|
||
<path d="M20 21l2 -2l-2 -2" />
|
||
<path d="M17 17l-2 2l2 2" />
|
||
</svg>
|
||
</symbol>
|
||
<symbol id="svg-eye" viewBox="0 0 24 24">
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
|
||
stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="icon-tabler-eye-code">
|
||
<path stroke="none" d="M0 0h24v24H0z" fill="none" />
|
||
<path d="M10 12a2 2 0 1 0 4 0a2 2 0 0 0 -4 0" />
|
||
<path
|
||
d="M11.11 17.958c-3.209 -.307 -5.91 -2.293 -8.11 -5.958c2.4 -4 5.4 -6 9 -6c3.6 0 6.6 2 9 6c-.21 .352 -.427 .688 -.647 1.008" />
|
||
<path d="M20 21l2 -2l-2 -2" />
|
||
<path d="M17 17l-2 2l2 2" />
|
||
</svg>
|
||
</symbol>
|
||
</svg>
|
||
|
||
<input type="checkbox" class="sidebar-toggle" name="__navigation" id="__navigation" aria-label="Toggle site navigation sidebar">
|
||
<input type="checkbox" class="sidebar-toggle" name="__toc" id="__toc" aria-label="Toggle table of contents sidebar">
|
||
<label class="overlay sidebar-overlay" for="__navigation"></label>
|
||
<label class="overlay toc-overlay" for="__toc"></label>
|
||
|
||
<a class="skip-to-content muted-link" href="#furo-main-content">Skip to content</a>
|
||
|
||
|
||
|
||
<div class="page">
|
||
<header class="mobile-header">
|
||
<div class="header-left">
|
||
<label class="nav-overlay-icon" for="__navigation">
|
||
<span class="icon"><svg><use href="#svg-menu"></use></svg></span>
|
||
</label>
|
||
</div>
|
||
<div class="header-center">
|
||
<a href="../../index.html"><div class="brand">SearXNG Documentation (2026.5.7+ef6290c8c)</div></a>
|
||
</div>
|
||
<div class="header-right">
|
||
<div class="theme-toggle-container theme-toggle-header">
|
||
<button class="theme-toggle" aria-label="Toggle Light / Dark / Auto color theme">
|
||
<svg class="theme-icon-when-auto-light"><use href="#svg-sun-with-moon"></use></svg>
|
||
<svg class="theme-icon-when-auto-dark"><use href="#svg-moon-with-sun"></use></svg>
|
||
<svg class="theme-icon-when-dark"><use href="#svg-moon"></use></svg>
|
||
<svg class="theme-icon-when-light"><use href="#svg-sun"></use></svg>
|
||
</button>
|
||
</div>
|
||
<label class="toc-overlay-icon toc-header-icon no-toc" for="__toc">
|
||
<span class="icon"><svg><use href="#svg-toc"></use></svg></span>
|
||
</label>
|
||
</div>
|
||
</header>
|
||
<aside class="sidebar-drawer">
|
||
<div class="sidebar-container">
|
||
|
||
<div class="sidebar-sticky"><div class="sidebar-scroll"><a class="sidebar-brand" href="../../index.html">
|
||
<div class="sidebar-logo-container">
|
||
<img class="sidebar-logo" src="../../_static/searxng-wordmark.svg" alt="Logo"/>
|
||
</div>
|
||
|
||
<span class="sidebar-brand-text">SearXNG Documentation (2026.5.7+ef6290c8c)</span>
|
||
|
||
</a><form class="sidebar-search-container" method="get" action="../../search.html" role="search">
|
||
<input class="sidebar-search" placeholder="Search" name="q" aria-label="Search">
|
||
<input type="hidden" name="check_keywords" value="yes">
|
||
<input type="hidden" name="area" value="default">
|
||
</form>
|
||
<div id="searchbox"></div><div class="sidebar-tree">
|
||
<ul>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../../user/index.html">User information</a><input aria-label="Toggle navigation of User information" class="toctree-checkbox" id="toctree-checkbox-1" name="toctree-checkbox-1" role="switch" type="checkbox"/><label for="toctree-checkbox-1"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../user/search-syntax.html">Search syntax</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../user/configured_engines.html">Configured Engines</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../user/about.html">About SearXNG</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../../own-instance.html">Why use a private instance?</a></li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../../admin/index.html">Administrator documentation</a><input aria-label="Toggle navigation of Administrator documentation" class="toctree-checkbox" id="toctree-checkbox-2" name="toctree-checkbox-2" role="switch" type="checkbox"/><label for="toctree-checkbox-2"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../../admin/settings/index.html">Settings</a><input aria-label="Toggle navigation of Settings" class="toctree-checkbox" id="toctree-checkbox-3" name="toctree-checkbox-3" role="switch" type="checkbox"/><label for="toctree-checkbox-3"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings.html"><code class="docutils literal notranslate"><span class="pre">settings.yml</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_engines.html"><code class="docutils literal notranslate"><span class="pre">engines:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_brand.html"><code class="docutils literal notranslate"><span class="pre">brand:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_general.html"><code class="docutils literal notranslate"><span class="pre">general:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_search.html"><code class="docutils literal notranslate"><span class="pre">search:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_server.html"><code class="docutils literal notranslate"><span class="pre">server:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_ui.html"><code class="docutils literal notranslate"><span class="pre">ui:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_redis.html"><code class="docutils literal notranslate"><span class="pre">redis:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_valkey.html"><code class="docutils literal notranslate"><span class="pre">valkey:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_outgoing.html"><code class="docutils literal notranslate"><span class="pre">outgoing:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_categories_as_tabs.html"><code class="docutils literal notranslate"><span class="pre">categories_as_tabs:</span></code></a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../admin/settings/settings_plugins.html"><code class="docutils literal notranslate"><span class="pre">plugins:</span></code></a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation.html">Installation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation-docker.html">Installation container</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation-scripts.html">Installation Script</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation-searxng.html">Step by step installation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation-granian.html">Granian</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation-uwsgi.html">uWSGI</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation-nginx.html">NGINX</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/installation-apache.html">Apache</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/update-searxng.html">SearXNG maintenance</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/answer-captcha.html">Answer CAPTCHA from server’s IP</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/searx.favicons.html">Favicons</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/searx.limiter.html">Limiter</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/api.html">Administration API</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/architecture.html">Architecture</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/plugins.html">List of plugins</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../admin/buildhosts.html">Buildhosts</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../../dev/index.html">Developer documentation</a><input aria-label="Toggle navigation of Developer documentation" class="toctree-checkbox" id="toctree-checkbox-4" name="toctree-checkbox-4" role="switch" type="checkbox"/><label for="toctree-checkbox-4"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/quickstart.html">Development Quickstart</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/commits.html">Git Commits & Change Management</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/contribution_guide.html">How to contribute</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/extended_types.html">Extended Types</a></li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../../dev/engines/index.html">Engine Implementations</a><input aria-label="Toggle navigation of Engine Implementations" class="toctree-checkbox" id="toctree-checkbox-5" name="toctree-checkbox-5" role="switch" type="checkbox"/><label for="toctree-checkbox-5"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/enginelib.html">Engine Library</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/engines.html">SearXNG’s engines loader</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/engine_overview.html">Engine Overview</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/demo/demo_online.html">Demo Online Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/xpath.html">XPath Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/mediawiki.html">MediaWiki Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/json_engine.html">JSON Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/adobe_stock.html">Adobe Stock</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/alpinelinux.html">Alpine Linux Packages</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/annas_archive.html">Anna’s Archive</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/aol.html">AOL</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/archlinux.html">Arch Linux</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/arxiv.html">arXiv</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/astrophysics_data_system.html">Astrophysics Data System (ADS)</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/azure.html">Azure Resources</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/bing.html">Bing Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/bpb.html">Bpb</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/brave.html">Brave Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/bt4g.html">BT4G</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/chinaso.html">ChinaSo</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/core.html">CORE</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/crossref.html">Crossref</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/dailymotion.html">Dailymotion</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/discourse.html">Discourse Forums</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/duckduckgo.html">DuckDuckGo Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/geizhals.html">Geizhals</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/gitea.html">Gitea</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/github_code.html">Github Code</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/gitlab.html">GitLab</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/google.html">Google Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/huggingface.html">Hugging Face</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/karmasearch.html">Karmasearch</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/lemmy.html">Lemmy</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/loc.html">Library of Congress</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/marginalia.html">Marginalia Search</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/mastodon.html">Mastodon</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/moviepilot.html">Moviepilot</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/mrs.html">Matrix Rooms Search (MRS)</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/mwmbl.html">Mwmbl Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/odysee.html">Odysee</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/openalex.html">OpenAlex</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/openlibrary.html">Open Library</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/peertube.html">Peertube Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/piped.html">Piped</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/presearch.html">Presearch Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/pubmed.html">PubMed</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/qwant.html">Qwant</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/radio_browser.html">RadioBrowser</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/recoll.html">Recoll Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/repology.html">Repology</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/reuters.html">Reuters</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/semantic_scholar.html">Semantic Scholar</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/soundcloud.html">Soundcloud</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/sourcehut.html">Sourcehut</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/springer.html">Springer Nature</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/startpage.html">Startpage Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/tagesschau.html">Tagesschau API</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/torznab.html">Torznab WebAPI</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/tubearchivist.html">Tube Archivist</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/void.html">Void Linux binary packages</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/wallhaven.html">Wallhaven</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/wikipedia.html">Wikimedia</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/yacy.html">Yacy</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/yahoo.html">Yahoo Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online/zlibrary.html">Z-Library</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/offline_concept.html">Offline Concept</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/demo/demo_offline.html">Demo Offline Engine</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/offline/command-line-engines.html">Command Line Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/offline/nosql-engines.html">NoSQL databases</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/offline/search-indexer-engines.html">Local Search APIs</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/offline/sql-engines.html">SQL Engines</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/engines/online_url_search/tineye.html">Tineye</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../../dev/result_types/index.html">Result Types</a><input aria-label="Toggle navigation of Result Types" class="toctree-checkbox" id="toctree-checkbox-6" name="toctree-checkbox-6" role="switch" type="checkbox"/><label for="toctree-checkbox-6"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/result_types/base_result.html">Result</a></li>
|
||
<li class="toctree-l3 has-children"><a class="reference internal" href="../../dev/result_types/main_result.html">Main Search Results</a><input aria-label="Toggle navigation of Main Search Results" class="toctree-checkbox" id="toctree-checkbox-7" name="toctree-checkbox-7" role="switch" type="checkbox"/><label for="toctree-checkbox-7"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/result_types/main/mainresult.html"><code class="docutils literal notranslate"><span class="pre">MainResult</span></code></a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/result_types/main/keyvalue.html">Key-Value Results</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/result_types/main/code.html">Code Results</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/result_types/main/paper.html">Paper Results</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/result_types/main/file.html">File Results</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/result_types/answer.html">Answer Results</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/result_types/correction.html">Correction Results</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/result_types/suggestion.html">Suggestion Results</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/result_types/infobox.html">Infobox Results</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/templates.html">Simple Theme Templates</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/search_api.html">Search API</a></li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../../dev/plugins/index.html">Plugins</a><input aria-label="Toggle navigation of Plugins" class="toctree-checkbox" id="toctree-checkbox-8" name="toctree-checkbox-8" role="switch" type="checkbox"/><label for="toctree-checkbox-8"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/plugins/development.html">Plugin Development</a></li>
|
||
<li class="toctree-l3 has-children"><a class="reference internal" href="../../dev/plugins/builtins.html">Built-in Plugins</a><input aria-label="Toggle navigation of Built-in Plugins" class="toctree-checkbox" id="toctree-checkbox-9" name="toctree-checkbox-9" role="switch" type="checkbox"/><label for="toctree-checkbox-9"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/calculator.html">Calculator</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/hash_plugin.html">Hash Values</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/hostnames.html">Hostnames</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/infinite_scroll.html">Infinite scroll</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/self_info.html">Self-Info</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/tor_check.html">Tor check</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/unit_converter.html">Unit Converter</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/plugins/time_zone.html">Time Zone</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../../dev/answerers/index.html">Answerers</a><input aria-label="Toggle navigation of Answerers" class="toctree-checkbox" id="toctree-checkbox-10" name="toctree-checkbox-10" role="switch" type="checkbox"/><label for="toctree-checkbox-10"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/answerers/development.html">Answerer Development</a></li>
|
||
<li class="toctree-l3 has-children"><a class="reference internal" href="../../dev/answerers/builtins.html">Built-in Answerers</a><input aria-label="Toggle navigation of Built-in Answerers" class="toctree-checkbox" id="toctree-checkbox-11" name="toctree-checkbox-11" role="switch" type="checkbox"/><label for="toctree-checkbox-11"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/answerers/random.html">Random</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="../../dev/answerers/statistics.html">Statistics</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/translation.html">Translation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/makefile.html">Makefile & <code class="docutils literal notranslate"><span class="pre">./manage</span></code></a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../dev/reST.html">reST primer</a></li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="../../dev/searxng_extra/index.html">Tooling box <code class="docutils literal notranslate"><span class="pre">searxng_extra</span></code></a><input aria-label="Toggle navigation of Tooling box searxng_extra" class="toctree-checkbox" id="toctree-checkbox-12" name="toctree-checkbox-12" role="switch" type="checkbox"/><label for="toctree-checkbox-12"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="../../dev/searxng_extra/update.html"><code class="docutils literal notranslate"><span class="pre">searxng_extra/update/</span></code></a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../../utils/index.html">DevOps tooling box</a><input aria-label="Toggle navigation of DevOps tooling box" class="toctree-checkbox" id="toctree-checkbox-13" name="toctree-checkbox-13" role="switch" type="checkbox"/><label for="toctree-checkbox-13"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../utils/searxng.sh.html"><code class="docutils literal notranslate"><span class="pre">utils/searxng.sh</span></code></a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../../src/index.html">Source-Code</a><input aria-label="Toggle navigation of Source-Code" class="toctree-checkbox" id="toctree-checkbox-14" name="toctree-checkbox-14" role="switch" type="checkbox"/><label for="toctree-checkbox-14"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.babel_extract.html">Custom message extractor (i18n)</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.botdetection.html">Bot Detection</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.cache.html">Caches</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.exceptions.html">SearXNG Exceptions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.favicons.html">Favicons (source)</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.infopage.html">Online <code class="docutils literal notranslate"><span class="pre">/info</span></code></a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.locales.html">Locales</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.search.html">Search</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.search.processors.html">Search processors</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.settings.html">Settings Loader</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.sqlitedb.html">SQLite DB</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.utils.html">Utility functions for the engines</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.valkeydb.html">Valkey DB</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.valkeylib.html">Valkey Library</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../../src/searx.weather.html">Weather</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
</div>
|
||
</aside>
|
||
<div class="main">
|
||
<div class="content">
|
||
<div class="article-container">
|
||
<a href="#" class="back-to-top muted-link">
|
||
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
|
||
<path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8v12z"></path>
|
||
</svg>
|
||
<span>Back to top</span>
|
||
</a>
|
||
<div class="content-icon-container">
|
||
<div class="theme-toggle-container theme-toggle-content">
|
||
<button class="theme-toggle" aria-label="Toggle Light / Dark / Auto color theme">
|
||
<svg class="theme-icon-when-auto-light"><use href="#svg-sun-with-moon"></use></svg>
|
||
<svg class="theme-icon-when-auto-dark"><use href="#svg-moon-with-sun"></use></svg>
|
||
<svg class="theme-icon-when-dark"><use href="#svg-moon"></use></svg>
|
||
<svg class="theme-icon-when-light"><use href="#svg-sun"></use></svg>
|
||
</button>
|
||
</div>
|
||
<label class="toc-overlay-icon toc-content-icon no-toc" for="__toc">
|
||
<span class="icon"><svg><use href="#svg-toc"></use></svg></span>
|
||
</label>
|
||
</div>
|
||
<article role="main" id="furo-main-content">
|
||
<h1>Source code for searx.cache</h1><div class="highlight"><pre>
|
||
<span></span><span class="sd">"""Implementation of caching solutions.</span>
|
||
|
||
<span class="sd">- :py:obj:`searx.cache.ExpireCache` and its :py:obj:`searx.cache.ExpireCacheCfg`</span>
|
||
|
||
<span class="sd">----</span>
|
||
<span class="sd">"""</span>
|
||
|
||
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"ExpireCacheCfg"</span><span class="p">,</span> <span class="s2">"ExpireCacheStats"</span><span class="p">,</span> <span class="s2">"ExpireCache"</span><span class="p">,</span> <span class="s2">"ExpireCacheSQLite"</span><span class="p">]</span>
|
||
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">abc</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">collections.abc</span><span class="w"> </span><span class="kn">import</span> <span class="n">Iterator</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">dataclasses</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">datetime</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">hashlib</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">hmac</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">os</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">pickle</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">sqlite3</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">string</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">tempfile</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">time</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">typing</span>
|
||
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">msgspec</span>
|
||
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx</span><span class="w"> </span><span class="kn">import</span> <span class="n">sqlitedb</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx</span><span class="w"> </span><span class="kn">import</span> <span class="n">logger</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx</span><span class="w"> </span><span class="kn">import</span> <span class="n">get_setting</span>
|
||
|
||
<span class="n">log</span> <span class="o">=</span> <span class="n">logger</span><span class="o">.</span><span class="n">getChild</span><span class="p">(</span><span class="s2">"cache"</span><span class="p">)</span>
|
||
|
||
<span class="n">CacheRowType</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">TypeAlias</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">,</span> <span class="nb">int</span> <span class="o">|</span> <span class="kc">None</span><span class="p">]</span>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheCfg">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheCfg">[docs]</a>
|
||
<span class="k">class</span><span class="w"> </span><span class="nc">ExpireCacheCfg</span><span class="p">(</span><span class="n">msgspec</span><span class="o">.</span><span class="n">Struct</span><span class="p">):</span> <span class="c1"># pylint: disable=too-few-public-methods</span>
|
||
<span class="w"> </span><span class="sd">"""Configuration of a :py:obj:`ExpireCache` cache."""</span>
|
||
|
||
<span class="n">name</span><span class="p">:</span> <span class="nb">str</span>
|
||
<span class="w"> </span><span class="sd">"""Name of the cache."""</span>
|
||
|
||
<span class="n">db_url</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">""</span>
|
||
<span class="w"> </span><span class="sd">"""URL of the SQLite DB, the path to the database file. If unset a default</span>
|
||
<span class="sd"> DB will be created in `/tmp/sxng_cache_{self.name}.db`"""</span>
|
||
|
||
<span class="n">MAX_VALUE_LEN</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1024</span> <span class="o">*</span> <span class="mi">10</span>
|
||
<span class="w"> </span><span class="sd">"""Max length of a *serialized* value."""</span>
|
||
|
||
<span class="n">MAXHOLD_TIME</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">60</span> <span class="o">*</span> <span class="mi">60</span> <span class="o">*</span> <span class="mi">24</span> <span class="o">*</span> <span class="mi">7</span> <span class="c1"># 7 days</span>
|
||
<span class="w"> </span><span class="sd">"""Hold time (default in sec.), after which a value is removed from the cache."""</span>
|
||
|
||
<span class="n">MAINTENANCE_PERIOD</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">60</span> <span class="o">*</span> <span class="mi">60</span> <span class="c1"># 2h</span>
|
||
<span class="w"> </span><span class="sd">"""Maintenance period in seconds / when :py:obj:`MAINTENANCE_MODE` is set to</span>
|
||
<span class="sd"> ``auto``."""</span>
|
||
|
||
<span class="n">MAINTENANCE_MODE</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">Literal</span><span class="p">[</span><span class="s2">"auto"</span><span class="p">,</span> <span class="s2">"off"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"auto"</span>
|
||
<span class="w"> </span><span class="sd">"""Type of maintenance mode</span>
|
||
|
||
<span class="sd"> ``auto``:</span>
|
||
<span class="sd"> Maintenance is carried out automatically as part of the maintenance</span>
|
||
<span class="sd"> intervals (:py:obj:`MAINTENANCE_PERIOD`); no external process is required.</span>
|
||
|
||
<span class="sd"> ``off``:</span>
|
||
<span class="sd"> Maintenance is switched off and must be carried out by an external process</span>
|
||
<span class="sd"> if required.</span>
|
||
<span class="sd"> """</span>
|
||
|
||
<span class="n">password</span><span class="p">:</span> <span class="nb">bytes</span> <span class="o">=</span> <span class="n">get_setting</span><span class="p">(</span><span class="s2">"server.secret_key"</span><span class="p">)</span><span class="o">.</span><span class="n">encode</span><span class="p">()</span>
|
||
<span class="w"> </span><span class="sd">"""Password used by :py:obj:`ExpireCache.secret_hash`.</span>
|
||
|
||
<span class="sd"> The default password is taken from :ref:`secret_key <server.secret_key>`.</span>
|
||
<span class="sd"> When the password is changed, the hashed keys in the cache can no longer be</span>
|
||
<span class="sd"> used, which is why all values in the cache are deleted when the password is</span>
|
||
<span class="sd"> changed.</span>
|
||
<span class="sd"> """</span>
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">__post_init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
||
<span class="c1"># if db_url is unset, use a default DB in /tmp/sxng_cache_{name}.db</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">db_url</span><span class="p">:</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">db_url</span> <span class="o">=</span> <span class="n">tempfile</span><span class="o">.</span><span class="n">gettempdir</span><span class="p">()</span> <span class="o">+</span> <span class="n">os</span><span class="o">.</span><span class="n">sep</span> <span class="o">+</span> <span class="sa">f</span><span class="s2">"sxng_cache_</span><span class="si">{</span><span class="n">ExpireCache</span><span class="o">.</span><span class="n">normalize_name</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">name</span><span class="p">)</span><span class="si">}</span><span class="s2">.db"</span></div>
|
||
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheStats">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheStats">[docs]</a>
|
||
<span class="nd">@dataclasses</span><span class="o">.</span><span class="n">dataclass</span>
|
||
<span class="k">class</span><span class="w"> </span><span class="nc">ExpireCacheStats</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Dataclass which provides information on the status of the cache."""</span>
|
||
|
||
<span class="n">cached_items</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">list</span><span class="p">[</span><span class="n">CacheRowType</span><span class="p">]]</span>
|
||
<span class="w"> </span><span class="sd">"""Values in the cache mapped by context name.</span>
|
||
|
||
<span class="sd"> .. code: python</span>
|
||
|
||
<span class="sd"> {</span>
|
||
<span class="sd"> "context name": [</span>
|
||
<span class="sd"> ("foo key": "foo value", <expire>),</span>
|
||
<span class="sd"> ("bar key": "bar value", <expire>),</span>
|
||
<span class="sd"> # ...</span>
|
||
<span class="sd"> ],</span>
|
||
<span class="sd"> # ...</span>
|
||
<span class="sd"> }</span>
|
||
<span class="sd"> """</span>
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">report</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
||
<span class="n">c_ctx</span> <span class="o">=</span> <span class="mi">0</span>
|
||
<span class="n">c_kv</span> <span class="o">=</span> <span class="mi">0</span>
|
||
<span class="n">lines</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
|
||
|
||
<span class="k">for</span> <span class="n">ctx_name</span><span class="p">,</span> <span class="n">kv_list</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">cached_items</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||
<span class="n">c_ctx</span> <span class="o">+=</span> <span class="mi">1</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">kv_list</span><span class="p">:</span>
|
||
<span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">"[</span><span class="si">{</span><span class="n">ctx_name</span><span class="si">:</span><span class="s2">20s</span><span class="si">}</span><span class="s2">] empty"</span><span class="p">)</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">expire</span> <span class="ow">in</span> <span class="n">kv_list</span><span class="p">:</span>
|
||
<span class="n">valid_until</span> <span class="o">=</span> <span class="s2">""</span>
|
||
<span class="k">if</span> <span class="n">expire</span><span class="p">:</span>
|
||
<span class="n">valid_until</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromtimestamp</span><span class="p">(</span><span class="n">expire</span><span class="p">)</span><span class="o">.</span><span class="n">strftime</span><span class="p">(</span><span class="s2">"%Y-%m-</span><span class="si">%d</span><span class="s2"> %H:%M:%S"</span><span class="p">)</span>
|
||
<span class="n">c_kv</span> <span class="o">+=</span> <span class="mi">1</span>
|
||
<span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">"[</span><span class="si">{</span><span class="n">ctx_name</span><span class="si">:</span><span class="s2">20s</span><span class="si">}</span><span class="s2">] </span><span class="si">{</span><span class="n">valid_until</span><span class="si">}</span><span class="s2"> </span><span class="si">{</span><span class="n">key</span><span class="si">:</span><span class="s2">12</span><span class="si">}</span><span class="s2">"</span> <span class="sa">f</span><span class="s2">" --> (</span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span><span class="si">}</span><span class="s2">) </span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2"> "</span><span class="p">)</span>
|
||
|
||
<span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Number of contexts: </span><span class="si">{</span><span class="n">c_ctx</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
||
<span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">"number of key/value pairs: </span><span class="si">{</span><span class="n">c_kv</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">lines</span><span class="p">)</span></div>
|
||
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCache">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache">[docs]</a>
|
||
<span class="k">class</span><span class="w"> </span><span class="nc">ExpireCache</span><span class="p">(</span><span class="n">abc</span><span class="o">.</span><span class="n">ABC</span><span class="p">):</span>
|
||
<span class="w"> </span><span class="sd">"""Abstract base class for the implementation of a key/value cache</span>
|
||
<span class="sd"> with expire date."""</span>
|
||
|
||
<span class="n">cfg</span><span class="p">:</span> <span class="n">ExpireCacheCfg</span>
|
||
|
||
<span class="n">hash_token</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">"hash_token"</span>
|
||
|
||
<div class="viewcode-block" id="ExpireCache.set">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache.set">[docs]</a>
|
||
<span class="nd">@abc</span><span class="o">.</span><span class="n">abstractmethod</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">,</span> <span class="n">expire</span><span class="p">:</span> <span class="nb">int</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span> <span class="n">ctx</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Set *key* to *value*. To set a timeout on key use argument</span>
|
||
<span class="sd"> ``expire`` (in sec.). If expire is unset the default is taken from</span>
|
||
<span class="sd"> :py:obj:`ExpireCacheCfg.MAXHOLD_TIME`. After the timeout has expired,</span>
|
||
<span class="sd"> the key will automatically be deleted.</span>
|
||
|
||
<span class="sd"> The ``ctx`` argument specifies the context of the ``key``. A key is</span>
|
||
<span class="sd"> only unique in its context.</span>
|
||
|
||
<span class="sd"> The concrete implementations of this abstraction determine how the</span>
|
||
<span class="sd"> context is mapped in the connected database. In SQL databases, for</span>
|
||
<span class="sd"> example, the context is a DB table or in a Key/Value DB it could be</span>
|
||
<span class="sd"> a prefix for the key.</span>
|
||
|
||
<span class="sd"> If the context is not specified (the default is ``None``) then a</span>
|
||
<span class="sd"> default context should be used, e.g. a default table for SQL databases</span>
|
||
<span class="sd"> or a default prefix in a Key/Value DB.</span>
|
||
<span class="sd"> """</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCache.get">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache.get">[docs]</a>
|
||
<span class="nd">@abc</span><span class="o">.</span><span class="n">abstractmethod</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">default</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">ctx</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Return *value* of *key*. If key is unset, ``None`` is returned."""</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCache.maintenance">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache.maintenance">[docs]</a>
|
||
<span class="nd">@abc</span><span class="o">.</span><span class="n">abstractmethod</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">maintenance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">force</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">truncate</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Performs maintenance on the cache.</span>
|
||
|
||
<span class="sd"> ``force``:</span>
|
||
<span class="sd"> Maintenance should be carried out even if the maintenance interval has</span>
|
||
<span class="sd"> not yet been reached.</span>
|
||
|
||
<span class="sd"> ``truncate``:</span>
|
||
<span class="sd"> Truncate the entire cache, which is necessary, for example, if the</span>
|
||
<span class="sd"> password has changed.</span>
|
||
<span class="sd"> """</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCache.state">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache.state">[docs]</a>
|
||
<span class="nd">@abc</span><span class="o">.</span><span class="n">abstractmethod</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">state</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">ExpireCacheStats</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Returns a :py:obj:`ExpireCacheStats`, which provides information</span>
|
||
<span class="sd"> about the status of the cache."""</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCache.build_cache">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache.build_cache">[docs]</a>
|
||
<span class="nd">@staticmethod</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">build_cache</span><span class="p">(</span><span class="n">cfg</span><span class="p">:</span> <span class="n">ExpireCacheCfg</span><span class="p">)</span> <span class="o">-></span> <span class="s2">"ExpireCacheSQLite"</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Factory to build a caching instance.</span>
|
||
|
||
<span class="sd"> .. note::</span>
|
||
|
||
<span class="sd"> Currently, only the SQLite adapter is available, but other database</span>
|
||
<span class="sd"> types could be implemented in the future, e.g. a Valkey (Redis)</span>
|
||
<span class="sd"> adapter.</span>
|
||
<span class="sd"> """</span>
|
||
<span class="k">return</span> <span class="n">ExpireCacheSQLite</span><span class="p">(</span><span class="n">cfg</span><span class="p">)</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCache.normalize_name">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache.normalize_name">[docs]</a>
|
||
<span class="nd">@staticmethod</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">normalize_name</span><span class="p">(</span><span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Returns a normalized name that can be used as a file name or as a SQL</span>
|
||
<span class="sd"> table name (is used, for example, to normalize the context name)."""</span>
|
||
|
||
<span class="n">_valid</span> <span class="o">=</span> <span class="s2">"-_."</span> <span class="o">+</span> <span class="n">string</span><span class="o">.</span><span class="n">ascii_letters</span> <span class="o">+</span> <span class="n">string</span><span class="o">.</span><span class="n">digits</span>
|
||
<span class="k">return</span> <span class="s2">""</span><span class="o">.</span><span class="n">join</span><span class="p">([</span><span class="n">c</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">name</span> <span class="k">if</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">_valid</span><span class="p">])</span></div>
|
||
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">serialize</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bytes</span><span class="p">:</span>
|
||
<span class="n">dump</span><span class="p">:</span> <span class="nb">bytes</span> <span class="o">=</span> <span class="n">pickle</span><span class="o">.</span><span class="n">dumps</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="n">dump</span>
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">deserialize</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="nb">bytes</span><span class="p">)</span> <span class="o">-></span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">:</span>
|
||
<span class="n">obj</span> <span class="o">=</span> <span class="n">pickle</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="n">obj</span>
|
||
|
||
<div class="viewcode-block" id="ExpireCache.secret_hash">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCache.secret_hash">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">secret_hash</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="nb">bytes</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Creates a hash of the argument ``name``. The hash value is formed</span>
|
||
<span class="sd"> from the ``name`` combined with the :py:obj:`password</span>
|
||
<span class="sd"> <ExpireCacheCfg.password>`. Can be used, for example, to make the</span>
|
||
<span class="sd"> ``key`` stored in the DB unreadable for third parties."""</span>
|
||
|
||
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span>
|
||
<span class="n">name</span> <span class="o">=</span> <span class="nb">bytes</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">encoding</span><span class="o">=</span><span class="s1">'utf-8'</span><span class="p">)</span>
|
||
<span class="n">m</span> <span class="o">=</span> <span class="n">hmac</span><span class="o">.</span><span class="n">new</span><span class="p">(</span><span class="n">name</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">password</span><span class="p">,</span> <span class="n">digestmod</span><span class="o">=</span><span class="s1">'sha256'</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="n">m</span><span class="o">.</span><span class="n">hexdigest</span><span class="p">()</span></div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite">[docs]</a>
|
||
<span class="k">class</span><span class="w"> </span><span class="nc">ExpireCacheSQLite</span><span class="p">(</span><span class="n">sqlitedb</span><span class="o">.</span><span class="n">SQLiteAppl</span><span class="p">,</span> <span class="n">ExpireCache</span><span class="p">):</span>
|
||
<span class="w"> </span><span class="sd">"""Cache that manages key/value pairs in a SQLite DB. The DB model in the</span>
|
||
<span class="sd"> SQLite DB is implemented in abstract class :py:obj:`SQLiteAppl</span>
|
||
<span class="sd"> <searx.sqlitedb.SQLiteAppl>`.</span>
|
||
|
||
<span class="sd"> The following configurations are required / supported:</span>
|
||
|
||
<span class="sd"> - :py:obj:`ExpireCacheCfg.db_url`</span>
|
||
<span class="sd"> - :py:obj:`ExpireCacheCfg.MAXHOLD_TIME`</span>
|
||
<span class="sd"> - :py:obj:`ExpireCacheCfg.MAINTENANCE_PERIOD`</span>
|
||
<span class="sd"> - :py:obj:`ExpireCacheCfg.MAINTENANCE_MODE`</span>
|
||
<span class="sd"> """</span>
|
||
|
||
<span class="n">DB_SCHEMA</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span>
|
||
|
||
<span class="c1"># The key/value tables will be created on demand by self.create_table</span>
|
||
<span class="n">DDL_CREATE_TABLES</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
|
||
|
||
<span class="n">CACHE_TABLE_PREFIX</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">"CACHE-TABLE"</span>
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cfg</span><span class="p">:</span> <span class="n">ExpireCacheCfg</span><span class="p">):</span>
|
||
<span class="w"> </span><span class="sd">"""An instance of the SQLite expire cache is build up from a</span>
|
||
<span class="sd"> :py:obj:`config <ExpireCacheCfg>`."""</span>
|
||
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="p">:</span> <span class="n">ExpireCacheCfg</span> <span class="o">=</span> <span class="n">cfg</span>
|
||
<span class="k">if</span> <span class="n">cfg</span><span class="o">.</span><span class="n">db_url</span> <span class="o">==</span> <span class="s2">":memory:"</span><span class="p">:</span>
|
||
<span class="n">log</span><span class="o">.</span><span class="n">critical</span><span class="p">(</span><span class="s2">"don't use SQLite DB in :memory: in production!!"</span><span class="p">)</span>
|
||
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">cfg</span><span class="o">.</span><span class="n">db_url</span><span class="p">)</span>
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.init">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.init">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">init</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">conn</span><span class="p">:</span> <span class="n">sqlite3</span><span class="o">.</span><span class="n">Connection</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
||
<span class="n">ret_val</span> <span class="o">=</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">init</span><span class="p">(</span><span class="n">conn</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">ret_val</span><span class="p">:</span>
|
||
<span class="k">return</span> <span class="kc">False</span>
|
||
|
||
<span class="n">new</span> <span class="o">=</span> <span class="n">hashlib</span><span class="o">.</span><span class="n">sha256</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">password</span><span class="p">)</span><span class="o">.</span><span class="n">hexdigest</span><span class="p">()</span>
|
||
<span class="n">old</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">properties</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">hash_token</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">old</span> <span class="o">!=</span> <span class="n">new</span><span class="p">:</span>
|
||
<span class="k">if</span> <span class="n">old</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
|
||
<span class="n">log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="s2">"[</span><span class="si">%s</span><span class="s2">] hash token changed: truncate all cache tables"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">maintenance</span><span class="p">(</span><span class="n">force</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">truncate</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">properties</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">hash_token</span><span class="p">,</span> <span class="n">new</span><span class="p">)</span>
|
||
|
||
<span class="k">return</span> <span class="kc">True</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.maintenance">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.maintenance">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">maintenance</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">force</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">truncate</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
||
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">force</span> <span class="ow">and</span> <span class="nb">int</span><span class="p">(</span><span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">())</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">next_maintenance_time</span><span class="p">:</span>
|
||
<span class="c1"># log.debug("no maintenance required yet, next maintenance interval is in the future")</span>
|
||
<span class="k">return</span> <span class="kc">False</span>
|
||
|
||
<span class="c1"># Prevent parallel DB maintenance cycles from other DB connections</span>
|
||
<span class="c1"># (e.g. in multi thread or process environments).</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">properties</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"LAST_MAINTENANCE"</span><span class="p">,</span> <span class="s2">""</span><span class="p">)</span> <span class="c1"># hint: this (also) sets the m_time of the property!</span>
|
||
|
||
<span class="k">if</span> <span class="n">truncate</span><span class="p">:</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">truncate_tables</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">table_names</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="kc">True</span>
|
||
|
||
<span class="c1"># drop items by expire time stamp ..</span>
|
||
<span class="n">expire</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">())</span>
|
||
|
||
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">connect</span><span class="p">()</span> <span class="k">as</span> <span class="n">conn</span><span class="p">:</span>
|
||
<span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_names</span><span class="p">:</span>
|
||
<span class="n">res</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="sa">f</span><span class="s2">"DELETE FROM </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2"> WHERE expire < ?"</span><span class="p">,</span> <span class="p">(</span><span class="n">expire</span><span class="p">,))</span>
|
||
<span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"deleted </span><span class="si">%s</span><span class="s2"> keys from table </span><span class="si">%s</span><span class="s2"> (expire date reached)"</span><span class="p">,</span> <span class="n">res</span><span class="o">.</span><span class="n">rowcount</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Vacuuming the WALs</span>
|
||
<span class="c1"># https://www.theunterminatedstring.com/sqlite-vacuuming/</span>
|
||
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="s2">"PRAGMA wal_checkpoint(TRUNCATE)"</span><span class="p">)</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
|
||
|
||
<span class="k">return</span> <span class="kc">True</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.create_table">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.create_table">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">create_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">table</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Create DB ``table`` if it has not yet been created, no recreates are</span>
|
||
<span class="sd"> initiated if the table already exists.</span>
|
||
<span class="sd"> """</span>
|
||
<span class="k">if</span> <span class="n">table</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_names</span><span class="p">:</span>
|
||
<span class="c1"># log.debug("key/value table %s exists in DB (no need to recreate)", table)</span>
|
||
<span class="k">return</span> <span class="kc">False</span>
|
||
|
||
<span class="n">log</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"key/value table '</span><span class="si">%s</span><span class="s2">' NOT exists in DB -> create DB table .."</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span>
|
||
<span class="n">sql_table</span> <span class="o">=</span> <span class="s2">"</span><span class="se">\n</span><span class="s2">"</span><span class="o">.</span><span class="n">join</span><span class="p">(</span>
|
||
<span class="p">[</span>
|
||
<span class="sa">f</span><span class="s2">"CREATE TABLE IF NOT EXISTS </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2"> ("</span><span class="p">,</span>
|
||
<span class="s2">" key TEXT,"</span><span class="p">,</span>
|
||
<span class="s2">" value BLOB,"</span><span class="p">,</span>
|
||
<span class="sa">f</span><span class="s2">" expire INTEGER DEFAULT (strftime('%s', 'now') + </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">MAXHOLD_TIME</span><span class="si">}</span><span class="s2">),"</span><span class="p">,</span>
|
||
<span class="s2">"PRIMARY KEY (key))"</span><span class="p">,</span>
|
||
<span class="p">]</span>
|
||
<span class="p">)</span>
|
||
<span class="n">sql_index</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"CREATE INDEX IF NOT EXISTS index_expire_</span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2"> ON </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">(expire);"</span>
|
||
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">connect</span><span class="p">()</span> <span class="k">as</span> <span class="n">conn</span><span class="p">:</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql_table</span><span class="p">)</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql_index</span><span class="p">)</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
|
||
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">properties</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">CACHE_TABLE_PREFIX</span><span class="si">}</span><span class="s2">-</span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="kc">True</span></div>
|
||
|
||
|
||
<span class="nd">@property</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">table_names</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
|
||
<span class="w"> </span><span class="sd">"""List of key/value tables already created in the DB."""</span>
|
||
<span class="n">sql</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"SELECT value FROM properties WHERE name LIKE '</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">CACHE_TABLE_PREFIX</span><span class="si">}</span><span class="s2">%%'"</span>
|
||
<span class="n">rows</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">DB</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql</span><span class="p">)</span><span class="o">.</span><span class="n">fetchall</span><span class="p">()</span> <span class="ow">or</span> <span class="p">[]</span>
|
||
<span class="k">return</span> <span class="p">[</span><span class="n">r</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">r</span> <span class="ow">in</span> <span class="n">rows</span><span class="p">]</span>
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">truncate_tables</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">table_names</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]):</span>
|
||
<span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"truncate table: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="s2">","</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">table_names</span><span class="p">))</span>
|
||
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">connect</span><span class="p">()</span> <span class="k">as</span> <span class="n">conn</span><span class="p">:</span>
|
||
<span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">table_names</span><span class="p">:</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="sa">f</span><span class="s2">"DELETE FROM </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
|
||
<span class="k">return</span> <span class="kc">True</span>
|
||
|
||
<span class="nd">@property</span>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">next_maintenance_time</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Returns (unix epoch) time of the next maintenance."""</span>
|
||
|
||
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">MAINTENANCE_PERIOD</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">properties</span><span class="o">.</span><span class="n">m_time</span><span class="p">(</span><span class="s2">"LAST_MAINTENANCE"</span><span class="p">,</span> <span class="nb">int</span><span class="p">(</span><span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()))</span>
|
||
|
||
<span class="c1"># implement ABC methods of ExpireCache</span>
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.set">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.set">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">,</span> <span class="n">expire</span><span class="p">:</span> <span class="nb">int</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span> <span class="n">ctx</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Set key/value in DB table given by argument ``ctx``. If expire is</span>
|
||
<span class="sd"> unset the default is taken from :py:obj:`ExpireCacheCfg.MAXHOLD_TIME`.</span>
|
||
<span class="sd"> If ``ctx`` argument is ``None`` (the default), a table name is</span>
|
||
<span class="sd"> generated from the :py:obj:`ExpireCacheCfg.name`. If DB table does not</span>
|
||
<span class="sd"> exists, it will be created (on demand) by :py:obj:`self.create_table</span>
|
||
<span class="sd"> <ExpireCacheSQLite.create_table>`.</span>
|
||
<span class="sd"> """</span>
|
||
<span class="n">c</span><span class="p">,</span> <span class="n">err_msg_list</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_setmany</span><span class="p">([(</span><span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">expire</span><span class="p">)],</span> <span class="n">ctx</span><span class="o">=</span><span class="n">ctx</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">c</span><span class="p">:</span>
|
||
<span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"</span><span class="si">%s</span><span class="s2"> -- </span><span class="si">%s</span><span class="s2">: key '</span><span class="si">%s</span><span class="s2">' updated or inserted (</span><span class="si">%s</span><span class="s2"> errors)"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">ctx</span><span class="p">,</span> <span class="n">key</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">err_msg_list</span><span class="p">))</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="k">for</span> <span class="n">msg</span> <span class="ow">in</span> <span class="n">err_msg_list</span><span class="p">:</span>
|
||
<span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s2">"</span><span class="si">%s</span><span class="s2"> -- </span><span class="si">%s</span><span class="s2">: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">ctx</span><span class="p">,</span> <span class="n">msg</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">c</span><span class="p">)</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.setmany">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.setmany">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">setmany</span><span class="p">(</span>
|
||
<span class="bp">self</span><span class="p">,</span>
|
||
<span class="n">opt_list</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="n">CacheRowType</span><span class="p">],</span>
|
||
<span class="n">ctx</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
||
<span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Efficient bootload of the cache from a list of options. The list</span>
|
||
<span class="sd"> contains tuples with the arguments described in</span>
|
||
<span class="sd"> :py:obj:`ExpireCacheSQLite.set`."""</span>
|
||
<span class="n">_start</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span>
|
||
<span class="n">c</span><span class="p">,</span> <span class="n">err_msg_list</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_setmany</span><span class="p">(</span><span class="n">opt_list</span><span class="o">=</span><span class="n">opt_list</span><span class="p">,</span> <span class="n">ctx</span><span class="o">=</span><span class="n">ctx</span><span class="p">)</span>
|
||
<span class="n">_end</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span>
|
||
<span class="k">for</span> <span class="n">msg</span> <span class="ow">in</span> <span class="n">err_msg_list</span><span class="p">:</span>
|
||
<span class="n">log</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="s2">"</span><span class="si">%s</span><span class="s2"> -- </span><span class="si">%s</span><span class="s2">: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">ctx</span><span class="p">,</span> <span class="n">msg</span><span class="p">)</span>
|
||
|
||
<span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span>
|
||
<span class="s2">"</span><span class="si">%s</span><span class="s2"> -- </span><span class="si">%s</span><span class="s2">: </span><span class="si">%s</span><span class="s2">/</span><span class="si">%s</span><span class="s2"> key/value pairs updated or inserted in </span><span class="si">%s</span><span class="s2"> sec (</span><span class="si">%s</span><span class="s2"> errors)"</span><span class="p">,</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
|
||
<span class="n">ctx</span><span class="p">,</span>
|
||
<span class="n">c</span><span class="p">,</span>
|
||
<span class="nb">len</span><span class="p">(</span><span class="n">opt_list</span><span class="p">),</span>
|
||
<span class="n">_end</span> <span class="o">-</span> <span class="n">_start</span><span class="p">,</span>
|
||
<span class="nb">len</span><span class="p">(</span><span class="n">err_msg_list</span><span class="p">),</span>
|
||
<span class="p">)</span>
|
||
<span class="k">return</span> <span class="n">c</span></div>
|
||
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">_setmany</span><span class="p">(</span>
|
||
<span class="bp">self</span><span class="p">,</span>
|
||
<span class="n">opt_list</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="n">CacheRowType</span><span class="p">],</span>
|
||
<span class="n">ctx</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
||
<span class="p">)</span> <span class="o">-></span> <span class="nb">tuple</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]]:</span>
|
||
|
||
<span class="n">table</span> <span class="o">=</span> <span class="n">ctx</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">maintenance</span><span class="p">()</span>
|
||
|
||
<span class="n">table_name</span> <span class="o">=</span> <span class="n">table</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span><span class="p">:</span>
|
||
<span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">normalize_name</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">create_table</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span>
|
||
|
||
<span class="n">sql_str</span> <span class="o">=</span> <span class="p">(</span>
|
||
<span class="sa">f</span><span class="s2">"INSERT INTO </span><span class="si">{</span><span class="n">table_name</span><span class="si">}</span><span class="s2"> (key, value, expire) VALUES (?, ?, ?)"</span>
|
||
<span class="sa">f</span><span class="s2">" ON CONFLICT DO "</span>
|
||
<span class="sa">f</span><span class="s2">"UPDATE SET value=?, expire=?"</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="n">sql_rows</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span>
|
||
<span class="nb">tuple</span><span class="p">[</span>
|
||
<span class="nb">str</span><span class="p">,</span> <span class="c1"># key</span>
|
||
<span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">,</span> <span class="c1"># value</span>
|
||
<span class="nb">int</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span> <span class="c1"># expire</span>
|
||
<span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">,</span> <span class="c1"># value</span>
|
||
<span class="nb">int</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span> <span class="c1"># expire</span>
|
||
<span class="p">]</span>
|
||
<span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
|
||
|
||
<span class="n">err_msg_list</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
|
||
<span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">_val</span><span class="p">,</span> <span class="n">expire</span> <span class="ow">in</span> <span class="n">opt_list</span><span class="p">:</span>
|
||
|
||
<span class="n">value</span><span class="p">:</span> <span class="nb">bytes</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">serialize</span><span class="p">(</span><span class="n">value</span><span class="o">=</span><span class="n">_val</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">MAX_VALUE_LEN</span><span class="p">:</span>
|
||
<span class="n">err_msg_list</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">.key='</span><span class="si">{</span><span class="n">key</span><span class="si">}</span><span class="s2">' - serialized value too big to cache (len: </span><span class="si">{</span><span class="nb">len</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="si">}</span><span class="s2">) "</span><span class="p">)</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">expire</span><span class="p">:</span>
|
||
<span class="n">expire</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">MAXHOLD_TIME</span>
|
||
<span class="n">expire</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">())</span> <span class="o">+</span> <span class="n">expire</span>
|
||
|
||
<span class="c1"># positional arguments of the INSERT INTO statement</span>
|
||
<span class="n">sql_args</span> <span class="o">=</span> <span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">expire</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">expire</span><span class="p">)</span>
|
||
<span class="n">sql_rows</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">sql_args</span><span class="p">)</span>
|
||
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">sql_rows</span><span class="p">:</span>
|
||
<span class="k">return</span> <span class="mi">0</span><span class="p">,</span> <span class="n">err_msg_list</span>
|
||
|
||
<span class="k">if</span> <span class="n">table</span><span class="p">:</span>
|
||
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">DB</span><span class="p">:</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">DB</span><span class="o">.</span><span class="n">executemany</span><span class="p">(</span><span class="n">sql_str</span><span class="p">,</span> <span class="n">sql_rows</span><span class="p">)</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">connect</span><span class="p">()</span> <span class="k">as</span> <span class="n">conn</span><span class="p">:</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">executemany</span><span class="p">(</span><span class="n">sql_str</span><span class="p">,</span> <span class="n">sql_rows</span><span class="p">)</span>
|
||
<span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
|
||
|
||
<span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="n">sql_rows</span><span class="p">),</span> <span class="n">err_msg_list</span>
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.get">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.get">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">default</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">ctx</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Get value of ``key`` from table given by argument ``ctx``. If</span>
|
||
<span class="sd"> ``ctx`` argument is ``None`` (the default), a table name is generated</span>
|
||
<span class="sd"> from the :py:obj:`ExpireCacheCfg.name`. If ``key`` not exists (in</span>
|
||
<span class="sd"> table), the ``default`` value is returned.</span>
|
||
|
||
<span class="sd"> """</span>
|
||
<span class="n">table</span> <span class="o">=</span> <span class="n">ctx</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">maintenance</span><span class="p">()</span>
|
||
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">table</span><span class="p">:</span>
|
||
<span class="n">table</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">normalize_name</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
||
|
||
<span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_names</span><span class="p">:</span>
|
||
<span class="k">return</span> <span class="n">default</span>
|
||
|
||
<span class="n">sql</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"SELECT value FROM </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2"> WHERE key = ?"</span>
|
||
<span class="n">row</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">DB</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="p">(</span><span class="n">key</span><span class="p">,))</span><span class="o">.</span><span class="n">fetchone</span><span class="p">()</span>
|
||
<span class="k">if</span> <span class="n">row</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||
<span class="k">return</span> <span class="n">default</span>
|
||
|
||
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">deserialize</span><span class="p">(</span><span class="n">row</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.pairs">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.pairs">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">pairs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ctx</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">Iterator</span><span class="p">[</span><span class="nb">tuple</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">typing</span><span class="o">.</span><span class="n">Any</span><span class="p">]]:</span>
|
||
<span class="w"> </span><span class="sd">"""Iterate over key/value pairs from table given by argument ``ctx``.</span>
|
||
<span class="sd"> If ``ctx`` argument is ``None`` (the default), a table name is</span>
|
||
<span class="sd"> generated from the :py:obj:`ExpireCacheCfg.name`."""</span>
|
||
<span class="n">table</span> <span class="o">=</span> <span class="n">ctx</span>
|
||
<span class="bp">self</span><span class="o">.</span><span class="n">maintenance</span><span class="p">()</span>
|
||
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">table</span><span class="p">:</span>
|
||
<span class="n">table</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">normalize_name</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
||
|
||
<span class="k">if</span> <span class="n">table</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_names</span><span class="p">:</span>
|
||
<span class="k">for</span> <span class="n">row</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">DB</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="sa">f</span><span class="s2">"SELECT key, value FROM </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">):</span>
|
||
<span class="k">yield</span> <span class="n">row</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">deserialize</span><span class="p">(</span><span class="n">row</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span></div>
|
||
|
||
|
||
<div class="viewcode-block" id="ExpireCacheSQLite.state">
|
||
<a class="viewcode-back" href="../../src/searx.cache.html#searx.cache.ExpireCacheSQLite.state">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">state</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">ExpireCacheStats</span><span class="p">:</span>
|
||
<span class="n">cached_items</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">list</span><span class="p">[</span><span class="n">CacheRowType</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span>
|
||
<span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_names</span><span class="p">:</span>
|
||
<span class="n">cached_items</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
|
||
<span class="k">for</span> <span class="n">row</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">DB</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="sa">f</span><span class="s2">"SELECT key, value, expire FROM </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">):</span>
|
||
<span class="n">cached_items</span><span class="p">[</span><span class="n">table</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">row</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">deserialize</span><span class="p">(</span><span class="n">row</span><span class="p">[</span><span class="mi">1</span><span class="p">]),</span> <span class="n">row</span><span class="p">[</span><span class="mi">2</span><span class="p">]))</span>
|
||
<span class="k">return</span> <span class="n">ExpireCacheStats</span><span class="p">(</span><span class="n">cached_items</span><span class="o">=</span><span class="n">cached_items</span><span class="p">)</span></div>
|
||
</div>
|
||
|
||
</pre></div>
|
||
</article>
|
||
</div>
|
||
<footer>
|
||
|
||
<div class="related-pages">
|
||
|
||
|
||
</div>
|
||
<div class="bottom-of-page">
|
||
<div class="left-details">
|
||
<div class="copyright">
|
||
Copyright © SearXNG team
|
||
</div>
|
||
Made with
|
||
<a href="https://github.com/pradyunsg/furo">Furo</a>
|
||
|
||
</div>
|
||
<div class="right-details">
|
||
<div class="icons">
|
||
<a class="muted-link " href="https://github.com/searxng/searxng/" aria-label="GitHub">💾</a>
|
||
<a class="muted-link " href="https://searx.space/" aria-label="searx.space">🌐</a>
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
</footer>
|
||
</div>
|
||
<aside class="toc-drawer no-toc">
|
||
|
||
|
||
|
||
</aside>
|
||
</div>
|
||
</div><script src="../../_static/documentation_options.js?v=d004a72a"></script>
|
||
<script src="../../_static/doctools.js?v=fd6eb6e6"></script>
|
||
<script src="../../_static/sphinx_highlight.js?v=6ffebe34"></script>
|
||
<script src="../../_static/scripts/furo.js?v=46bd48cc"></script>
|
||
</body>
|
||
</html> |