searxng/dev/engines/offline/nosql-engines.html

301 lines
21 KiB
HTML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<!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>NoSQL databases &#8212; SearXNG Documentation (2024.11.8+2fbf15ecc)</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" />
<link rel="stylesheet" type="text/css" href="../../../_static/autodoc_pydantic.css" />
<script src="../../../_static/documentation_options.js?v=c97bae97"></script>
<script src="../../../_static/doctools.js?v=9a2dae69"></script>
<script src="../../../_static/sphinx_highlight.js?v=dc90522c"></script>
<script data-project="searxng" data-version="2024.11.8+2fbf15ecc" 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="Local Search APIs" href="search-indexer-engines.html" />
<link rel="prev" title="Command Line Engines" href="command-line-engines.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="search-indexer-engines.html" title="Local Search APIs"
accesskey="N">next</a> |</li>
<li class="right" >
<a href="command-line-engines.html" title="Command Line Engines"
accesskey="P">previous</a> |</li>
<li class="nav-item nav-item-0"><a href="../../../index.html">SearXNG Documentation (2024.11.8+2fbf15ecc)</a> &#187;</li>
<li class="nav-item nav-item-1"><a href="../../index.html" >Developer documentation</a> &#187;</li>
<li class="nav-item nav-item-2"><a href="../index.html" accesskey="U">Engine Implementations</a> &#187;</li>
<li class="nav-item nav-item-this"><a href="">NoSQL databases</a></li>
</ul>
</div>
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<section id="nosql-databases">
<span id="nosql-engines"></span><h1>NoSQL databases<a class="headerlink" href="#nosql-databases" title="Link to this heading"></a></h1>
<aside class="sidebar">
<p class="sidebar-title">further read</p>
<ul class="simple">
<li><p><a class="reference external" href="https://en.wikipedia.org/wiki/NoSQL">NoSQL databases</a></p></li>
<li><p><a class="reference external" href="https://redis.io/">redis.io</a></p></li>
<li><p><a class="reference external" href="https://www.mongodb.com">MongoDB</a></p></li>
</ul>
</aside>
<nav class="contents local" id="contents">
<ul class="simple">
<li><p><a class="reference internal" href="#extra-dependencies" id="id6">Extra Dependencies</a></p></li>
<li><p><a class="reference internal" href="#configure-the-engines" id="id7">Configure the engines</a></p>
<ul>
<li><p><a class="reference internal" href="#redis-server" id="id8">Redis Server</a></p></li>
<li><p><a class="reference internal" href="#engine-mongodb" id="id9">MongoDB</a></p></li>
</ul>
</li>
</ul>
</nav>
<aside class="sidebar">
<p class="sidebar-title">info</p>
<p>Initial sponsored by <a class="reference external" href="https://nlnet.nl/discovery">Search and Discovery Fund</a> of <a class="reference external" href="https://nlnet.nl/">NLnet Foundation</a>.</p>
</aside>
<p>The following <a class="reference external" href="https://en.wikipedia.org/wiki/NoSQL">NoSQL databases</a> are supported:</p>
<ul class="simple">
<li><p><a class="reference internal" href="#engine-redis-server"><span class="std std-ref">Redis Server</span></a></p></li>
<li><p><a class="reference internal" href="#engine-mongodb"><span class="std std-ref">MongoDB</span></a></p></li>
</ul>
<p>All of the engines above are just commented out in the <a class="extlink-origin reference external" href="https://github.com/searxng/searxng/blob/master/searx/settings.yml">settings.yml</a>, as you have to set various options and install
dependencies before using them.</p>
<p>By default, the engines use the <code class="docutils literal notranslate"><span class="pre">key-value</span></code> template for displaying results /
see <a class="extlink-origin reference external" href="https://github.com/searxng/searxng/blob/master/searx/templates/simple/result_templates/key-value.html">simple</a>
theme. If you are not satisfied with the original result layout, you can use
your own template, set <code class="docutils literal notranslate"><span class="pre">result_template</span></code> attribute to <code class="docutils literal notranslate"><span class="pre">{template_name}</span></code> and
place the templates at:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">searx</span><span class="o">/</span><span class="n">templates</span><span class="o">/</span><span class="p">{</span><span class="n">theme_name</span><span class="p">}</span><span class="o">/</span><span class="n">result_templates</span><span class="o">/</span><span class="p">{</span><span class="n">template_name</span><span class="p">}</span>
</pre></div>
</div>
<p>Furthermore, if you do not wish to expose these engines on a public instance, you
can still add them and limit the access by setting <code class="docutils literal notranslate"><span class="pre">tokens</span></code> as described in
section <a class="reference internal" href="../../../admin/settings/settings_engine.html#private-engines"><span class="std std-ref">Private Engines (tokens)</span></a>.</p>
<section id="extra-dependencies">
<h2><a class="toc-backref" href="#id6" role="doc-backlink">Extra Dependencies</a><a class="headerlink" href="#extra-dependencies" title="Link to this heading"></a></h2>
<p>For using <a class="reference internal" href="#engine-redis-server"><span class="std std-ref">Redis Server</span></a> or <a class="reference internal" href="#engine-mongodb"><span class="std std-ref">MongoDB</span></a> you need to
install additional packages in Pythons Virtual Environment of your SearXNG
instance. To switch into the environment (<a class="reference internal" href="../../../admin/installation-searxng.html#searxng-src"><span class="std std-ref">Install SearXNG &amp; dependencies</span></a>) 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="configure-the-engines">
<h2><a class="toc-backref" href="#id7" role="doc-backlink">Configure the engines</a><a class="headerlink" href="#configure-the-engines" title="Link to this heading"></a></h2>
<p><a class="reference external" href="https://en.wikipedia.org/wiki/NoSQL">NoSQL databases</a> are used for storing arbitrary data without first defining
their structure.</p>
<section id="redis-server">
<span id="engine-redis-server"></span><h3><a class="toc-backref" href="#id8" role="doc-backlink">Redis Server</a><a class="headerlink" href="#redis-server" title="Link to this heading"></a></h3>
<aside class="sidebar">
<p class="sidebar-title">info</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">pip</span> <span class="pre">install</span></code> <a class="reference external" href="https://github.com/andymccurdy/redis-py#installation">redis</a></p></li>
<li><p><a class="reference external" href="https://redis.io/">redis.io</a></p></li>
<li><p><a class="extlink-origin reference external" href="https://github.com/searxng/searxng/blob/master/searx/engines/redis_server.py">redis_server.py</a></p></li>
</ul>
</aside>
<p id="module-searx.engines.redis_server">Redis is an open source (BSD licensed), in-memory data structure (key value
based) store. Before configuring the <code class="docutils literal notranslate"><span class="pre">redis_server</span></code> engine, you must install
the dependency <a class="reference external" href="https://github.com/andymccurdy/redis-py#installation">redis</a>.</p>
<section id="configuration">
<h4>Configuration<a class="headerlink" href="#configuration" title="Link to this heading"></a></h4>
<p>Select a database to search in and set its index in the option <code class="docutils literal notranslate"><span class="pre">db</span></code>. You can
either look for exact matches or use partial keywords to find what you are
looking for by configuring <code class="docutils literal notranslate"><span class="pre">exact_match_only</span></code>.</p>
</section>
<section id="example">
<h4>Example<a class="headerlink" href="#example" title="Link to this heading"></a></h4>
<p>Below is an example configuration:</p>
<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="c1"># Required dependency: redis</span>
<span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">myredis</span>
<span class="w"> </span><span class="nt">shortcut </span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">rds</span>
<span class="w"> </span><span class="nt">engine</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">redis_server</span>
<span class="w"> </span><span class="nt">exact_match_only</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">false</span>
<span class="w"> </span><span class="nt">host</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;127.0.0.1&#39;</span>
<span class="w"> </span><span class="nt">port</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">6379</span>
<span class="w"> </span><span class="nt">enable_http</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">true</span>
<span class="w"> </span><span class="nt">password</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;&#39;</span>
<span class="w"> </span><span class="nt">db</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">0</span>
</pre></div>
</div>
</section>
<section id="implementations">
<h4>Implementations<a class="headerlink" href="#implementations" title="Link to this heading"></a></h4>
</section>
</section>
<section id="engine-mongodb">
<span id="id2"></span><h3><a class="toc-backref" href="#id9" role="doc-backlink">MongoDB</a><a class="headerlink" href="#engine-mongodb" title="Link to this heading"></a></h3>
<aside class="sidebar">
<p class="sidebar-title">info</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">pip</span> <span class="pre">install</span></code> <a class="reference external" href="https://github.com/mongodb/mongo-python-driver#installation">pymongo</a></p></li>
<li><p><a class="reference external" href="https://www.mongodb.com">MongoDB</a></p></li>
<li><p><a class="extlink-origin reference external" href="https://github.com/searxng/searxng/blob/master/searx/engines/mongodb.py">mongodb.py</a></p></li>
</ul>
</aside>
<p id="module-searx.engines.mongodb"><a class="reference external" href="https://www.mongodb.com">MongoDB</a> is a document based database program that handles JSON like data.
Before configuring the <code class="docutils literal notranslate"><span class="pre">mongodb</span></code> engine, you must install the dependency
<a class="reference external" href="https://github.com/mongodb/mongo-python-driver#installation">pymongo</a>.</p>
<section id="id3">
<h4>Configuration<a class="headerlink" href="#id3" title="Link to this heading"></a></h4>
<p>In order to query <a class="reference external" href="https://www.mongodb.com">MongoDB</a>, you have to select a <code class="docutils literal notranslate"><span class="pre">database</span></code> and a
<code class="docutils literal notranslate"><span class="pre">collection</span></code>. Furthermore, you have to select a <code class="docutils literal notranslate"><span class="pre">key</span></code> that is going to be
searched. <a class="reference external" href="https://www.mongodb.com">MongoDB</a> also supports the option <code class="docutils literal notranslate"><span class="pre">exact_match_only</span></code>, so configure
it as you wish.</p>
</section>
<section id="id4">
<h4>Example<a class="headerlink" href="#id4" title="Link to this heading"></a></h4>
<p>Below is an example configuration for using a MongoDB collection:</p>
<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="c1"># MongoDB engine</span>
<span class="c1"># Required dependency: pymongo</span>
<span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mymongo</span>
<span class="w"> </span><span class="nt">engine</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">mongodb</span>
<span class="w"> </span><span class="nt">shortcut</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">md</span>
<span class="w"> </span><span class="nt">exact_match_only</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">false</span>
<span class="w"> </span><span class="nt">host</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;127.0.0.1&#39;</span>
<span class="w"> </span><span class="nt">port</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">27017</span>
<span class="w"> </span><span class="nt">enable_http</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">true</span>
<span class="w"> </span><span class="nt">results_per_page</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">20</span>
<span class="w"> </span><span class="nt">database</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;business&#39;</span>
<span class="w"> </span><span class="nt">collection</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;reviews&#39;</span><span class="w"> </span><span class="c1"># name of the db collection</span>
<span class="w"> </span><span class="nt">key</span><span class="p">:</span><span class="w"> </span><span class="s">&#39;name&#39;</span><span class="w"> </span><span class="c1"># key in the collection to search for</span>
</pre></div>
</div>
</section>
<section id="id5">
<h4>Implementations<a class="headerlink" href="#id5" title="Link to this heading"></a></h4>
</section>
</section>
</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">SearXNGs 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"><a class="reference internal" href="../offline_concept.html">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="command-line-engines.html">Command Line Engines</a></li>
<li class="toctree-l5 current"><a class="current reference internal" href="#">NoSQL databases</a></li>
<li class="toctree-l5"><a class="reference internal" href="search-indexer-engines.html">Local Search APIs</a></li>
<li class="toctree-l5"><a class="reference internal" href="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 &amp; <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="command-line-engines.html" title="previous chapter">Command Line Engines</a>
<li>Next: <a href="search-indexer-engines.html" title="next chapter">Local Search APIs</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/nosql-engines.rst.txt"
rel="nofollow">Show Source</a></li>
</ul>
</div>
</div>
</div>
<div class="clearer"></div>
</div>
<div class="footer" role="contentinfo">
&#169; Copyright SearXNG team.
</div>
</body>
</html>