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diff --git a/dev/engines/offline_concept.html b/dev/engines/offline_concept.html new file mode 100644 index 000000000..8f45a8388 --- /dev/null +++ b/dev/engines/offline_concept.html @@ -0,0 +1,215 @@ +<!DOCTYPE html> + +<html lang="en" data-content_root="../../"> + <head> + <meta charset="utf-8" /> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta name="viewport" content="width=device-width, initial-scale=1"> + <title>Offline Concept — SearXNG Documentation (2025.1.6+6dab7fe78)</title> + <link rel="stylesheet" type="text/css" href="../../_static/pygments.css?v=4f649999" /> + <link rel="stylesheet" type="text/css" href="../../_static/searxng.css?v=52e4ff28" /> + <script src="../../_static/documentation_options.js?v=ef740023"></script> + <script src="../../_static/doctools.js?v=9a2dae69"></script> + <script src="../../_static/sphinx_highlight.js?v=dc90522c"></script> + <script data-project="searxng" data-version="2025.1.6+6dab7fe78" src="../../_static/describe_version.js?v=fa7f30d0"></script> + <link rel="index" title="Index" href="../../genindex.html" /> + <link rel="search" title="Search" href="../../search.html" /> + <link rel="next" title="Demo Offline Engine" href="demo/demo_offline.html" /> + <link rel="prev" title="Z-Library" href="online/zlibrary.html" /> + </head><body> + <div class="related" role="navigation" aria-label="Related"> + <h3>Navigation</h3> + <ul> + <li class="right" style="margin-right: 10px"> + <a href="../../genindex.html" title="General Index" + accesskey="I">index</a></li> + <li class="right" > + <a href="../../py-modindex.html" title="Python Module Index" + >modules</a> |</li> + <li class="right" > + <a href="demo/demo_offline.html" title="Demo Offline Engine" + accesskey="N">next</a> |</li> + <li class="right" > + <a href="online/zlibrary.html" title="Z-Library" + accesskey="P">previous</a> |</li> + <li class="nav-item nav-item-0"><a href="../../index.html">SearXNG Documentation (2025.1.6+6dab7fe78)</a> »</li> + <li class="nav-item nav-item-1"><a href="../index.html" >Developer documentation</a> »</li> + <li class="nav-item nav-item-2"><a href="index.html" accesskey="U">Engine Implementations</a> »</li> + <li class="nav-item nav-item-this"><a href="">Offline Concept</a></li> + </ul> + </div> + + <div class="document"> + <div class="documentwrapper"> + <div class="bodywrapper"> + <div class="body" role="main"> + + <section id="offline-concept"> +<h1>Offline Concept<a class="headerlink" href="#offline-concept" title="Link to this heading">¶</a></h1> +<aside class="sidebar"> +<p class="sidebar-title">offline engines</p> +<ul class="simple"> +<li><p><a class="reference internal" href="demo/demo_offline.html#demo-offline-engine"><span class="std std-ref">Demo Offline Engine</span></a></p></li> +<li><p><a class="reference internal" href="offline/command-line-engines.html#engine-command"><span class="std std-ref">Command Line Engines</span></a></p></li> +<li><p><a class="reference internal" href="offline/sql-engines.html#sql-engines"><span class="std std-ref">SQL Engines</span></a></p></li> +<li><p><a class="reference internal" href="offline/nosql-engines.html#nosql-engines"><span class="std std-ref">NoSQL databases</span></a></p></li> +<li><p><a class="reference internal" href="../../src/searx.search.processors.html#module-searx.search.processors.offline" title="searx.search.processors.offline"><code class="xref py py-obj docutils literal notranslate"><span class="pre">searx.search.processors.offline</span></code></a></p></li> +</ul> +</aside> +<p>To extend the functionality of SearXNG, offline engines are going to be +introduced. An offline engine is an engine which does not need Internet +connection to perform a search and does not use HTTP to communicate.</p> +<p>Offline engines can be configured, by adding those to the <cite>engines</cite> list of +<a class="extlink-origin reference external" href="https://github.com/searxng/searxng/blob/master/searx/settings.yml">settings.yml</a>. An example skeleton for offline +engines can be found in <a class="reference internal" href="demo/demo_offline.html#demo-offline-engine"><span class="std std-ref">Demo Offline Engine</span></a> (<a class="extlink-origin reference external" href="https://github.com/searxng/searxng/blob/master/searx/engines/demo_offline.py">demo_offline.py</a>).</p> +<section id="programming-interface"> +<h2>Programming Interface<a class="headerlink" href="#programming-interface" title="Link to this heading">¶</a></h2> +<dl> +<dt><a class="reference internal" href="demo/demo_offline.html#searx.engines.demo_offline.init" title="searx.engines.demo_offline.init"><code class="xref py py-func docutils literal notranslate"><span class="pre">init(engine_settings=None)</span></code></a></dt><dd><p>All offline engines can have their own init function to setup the engine before +accepting requests. The function gets the settings from settings.yml as a +parameter. This function can be omitted, if there is no need to setup anything +in advance.</p> +</dd> +<dt><code class="xref py py-func docutils literal notranslate"><span class="pre">search(query,</span> <span class="pre">params)</span></code></dt><dd><p>Each offline engine has a function named <code class="docutils literal notranslate"><span class="pre">search</span></code>. This function is +responsible to perform a search and return the results in a presentable +format. (Where <em>presentable</em> means presentable by the selected result +template.)</p> +<p>The return value is a list of results retrieved by the engine.</p> +</dd> +<dt>Engine representation in <code class="docutils literal notranslate"><span class="pre">/config</span></code></dt><dd><p>If an engine is offline, the attribute <code class="docutils literal notranslate"><span class="pre">offline</span></code> is set to <code class="docutils literal notranslate"><span class="pre">True</span></code>.</p> +</dd> +</dl> +</section> +<section id="extra-dependencies"> +<span id="offline-requirements"></span><h2>Extra Dependencies<a class="headerlink" href="#extra-dependencies" title="Link to this heading">¶</a></h2> +<p>If an offline engine depends on an external tool, SearXNG does not install it by +default. When an administrator configures such engine and starts the instance, +the process returns an error with the list of missing dependencies. Also, +required dependencies will be added to the comment/description of the engine, so +admins can install packages in advance.</p> +<p>If there is a need to install additional packages in <em>Python’s Virtual +Environment</em> of your SearXNG instance you need to switch into the environment +(<a class="reference internal" href="../../admin/installation-searxng.html#searxng-src"><span class="std std-ref">Install SearXNG & dependencies</span></a>) first, for this you can use <a class="reference internal" href="../../utils/searxng.sh.html#searxng-sh"><span class="std std-ref">utils/searxng.sh</span></a>:</p> +<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ sudo utils/searxng.sh instance cmd bash +(searxng-pyenv)$ pip install ... +</pre></div> +</div> +</section> +<section id="private-engines-security"> +<h2>Private engines (Security)<a class="headerlink" href="#private-engines-security" title="Link to this heading">¶</a></h2> +<p>To limit the access to offline engines, if an instance is available publicly, +administrators can set token(s) for each of the <a class="reference internal" href="../../admin/settings/settings_engine.html#private-engines"><span class="std std-ref">Private Engines (tokens)</span></a>. If a +query contains a valid token, then SearXNG performs the requested private +search. If not, requests from an offline engines return errors.</p> +</section> +</section> + + + <div class="clearer"></div> + </div> + </div> + </div> + <span id="sidebar-top"></span> + <div class="sphinxsidebar" role="navigation" aria-label="Main"> + <div class="sphinxsidebarwrapper"> + + + <p class="logo"><a href="../../index.html"> + <img class="logo" src="../../_static/searxng-wordmark.svg" alt="Logo of SearXNG"/> + </a></p> + + +<h3><a href="../../index.html">Table of Contents</a></h3> +<ul class="current"> +<li class="toctree-l1"><a class="reference internal" href="../../user/index.html">User information</a></li> +<li class="toctree-l1"><a class="reference internal" href="../../own-instance.html">Why use a private instance?</a></li> +<li class="toctree-l1"><a class="reference internal" href="../../admin/index.html">Administrator documentation</a></li> +<li class="toctree-l1 current"><a class="reference internal" href="../index.html">Developer documentation</a><ul class="current"> +<li class="toctree-l2"><a class="reference internal" href="../quickstart.html">Development Quickstart</a></li> +<li class="toctree-l2"><a class="reference internal" href="../rtm_asdf.html">Runtime Management</a></li> +<li class="toctree-l2"><a class="reference internal" href="../contribution_guide.html">How to contribute</a></li> +<li class="toctree-l2 current"><a class="reference internal" href="index.html">Engine Implementations</a><ul class="current"> +<li class="toctree-l3"><a class="reference internal" href="enginelib.html">Engine Library</a></li> +<li class="toctree-l3"><a class="reference internal" href="engines.html">SearXNG’s engines loader</a></li> +<li class="toctree-l3"><a class="reference internal" href="engine_overview.html">Engine Overview</a></li> +<li class="toctree-l3 current"><a class="reference internal" href="index.html#engine-types">Engine Types</a><ul class="current"> +<li class="toctree-l4"><a class="reference internal" href="index.html#online-engines">Online Engines</a></li> +<li class="toctree-l4 current"><a class="reference internal" href="index.html#offline-engines">Offline Engines</a><ul class="current"> +<li class="toctree-l5 current"><a class="current reference internal" href="#">Offline Concept</a></li> +<li class="toctree-l5"><a class="reference internal" href="demo/demo_offline.html">Demo Offline Engine</a></li> +<li class="toctree-l5"><a class="reference internal" href="offline/command-line-engines.html">Command Line Engines</a></li> +<li class="toctree-l5"><a class="reference internal" href="offline/nosql-engines.html">NoSQL databases</a></li> +<li class="toctree-l5"><a class="reference internal" href="offline/search-indexer-engines.html">Local Search APIs</a></li> +<li class="toctree-l5"><a class="reference internal" href="offline/sql-engines.html">SQL Engines</a></li> +</ul> +</li> +<li class="toctree-l4"><a class="reference internal" href="index.html#online-url-search">Online URL Search</a></li> +<li class="toctree-l4"><a class="reference internal" href="index.html#online-currency">Online Currency</a></li> +<li class="toctree-l4"><a class="reference internal" href="index.html#online-dictionary">Online Dictionary</a></li> +</ul> +</li> +</ul> +</li> +<li class="toctree-l2"><a class="reference internal" href="../search_api.html">Search API</a></li> +<li class="toctree-l2"><a class="reference internal" href="../plugins.html">Plugins</a></li> +<li class="toctree-l2"><a class="reference internal" href="../translation.html">Translation</a></li> +<li class="toctree-l2"><a class="reference internal" href="../lxcdev.html">Developing in Linux Containers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../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="../reST.html">reST primer</a></li> +<li class="toctree-l2"><a class="reference internal" href="../searxng_extra/index.html">Tooling box <code class="docutils literal notranslate"><span class="pre">searxng_extra</span></code></a></li> +</ul> +</li> +<li class="toctree-l1"><a class="reference internal" href="../../utils/index.html">DevOps tooling box</a></li> +<li class="toctree-l1"><a class="reference internal" href="../../src/index.html">Source-Code</a></li> +</ul> + + <h3>Project Links</h3> + <ul> + <li><a href="https://github.com/searxng/searxng/tree/master">Source</a> + + <li><a href="https://github.com/searxng/searxng/wiki">Wiki</a> + + <li><a href="https://searx.space">Public instances</a> + + <li><a href="https://github.com/searxng/searxng/issues">Issue Tracker</a> + </ul><h3>Navigation</h3> +<ul> + <li><a href="../../index.html">Overview</a> + <ul> + <li><a href="../index.html">Developer documentation</a> + <ul> + <li><a href="index.html">Engine Implementations</a> + <ul> + <li>Previous: <a href="online/zlibrary.html" title="previous chapter">Z-Library</a> + <li>Next: <a href="demo/demo_offline.html" title="next chapter">Demo Offline Engine</a></ul> + </li></ul> + </li> + </ul> + </li> +</ul> +<search id="searchbox" style="display: none" role="search"> + <h3 id="searchlabel">Quick search</h3> + <div class="searchformwrapper"> + <form class="search" action="../../search.html" method="get"> + <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/> + <input type="submit" value="Go" /> + </form> + </div> +</search> +<script>document.getElementById('searchbox').style.display = "block"</script> + <div role="note" aria-label="source link"> + <h3>This Page</h3> + <ul class="this-page-menu"> + <li><a href="../../_sources/dev/engines/offline_concept.rst.txt" + rel="nofollow">Show Source</a></li> + </ul> + </div> + </div> + </div> + <div class="clearer"></div> + </div> + <div class="footer" role="contentinfo"> + © Copyright SearXNG team. + </div> + </body> +</html>
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