mirror of
https://github.com/element-hq/synapse.git
synced 2024-12-14 11:57:44 +00:00
334 lines
30 KiB
HTML
334 lines
30 KiB
HTML
<!DOCTYPE HTML>
|
|
<html lang="en" class="sidebar-visible no-js light">
|
|
<head>
|
|
<!-- Book generated using mdBook -->
|
|
<meta charset="UTF-8">
|
|
<title>User Directory - Synapse</title>
|
|
<!-- Custom HTML head -->
|
|
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
|
|
<meta name="description" content="">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
<meta name="theme-color" content="#ffffff" />
|
|
|
|
<link rel="icon" href="favicon.svg">
|
|
<link rel="shortcut icon" href="favicon.png">
|
|
<link rel="stylesheet" href="css/variables.css">
|
|
<link rel="stylesheet" href="css/general.css">
|
|
<link rel="stylesheet" href="css/chrome.css">
|
|
<link rel="stylesheet" href="css/print.css" media="print">
|
|
<!-- Fonts -->
|
|
<link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
|
|
<link rel="stylesheet" href="fonts/fonts.css">
|
|
<!-- Highlight.js Stylesheets -->
|
|
<link rel="stylesheet" href="highlight.css">
|
|
<link rel="stylesheet" href="tomorrow-night.css">
|
|
<link rel="stylesheet" href="ayu-highlight.css">
|
|
|
|
<!-- Custom theme stylesheets -->
|
|
<link rel="stylesheet" href="docs/website_files/table-of-contents.css">
|
|
<link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
|
|
<link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
|
|
<link rel="stylesheet" href="docs/website_files/version-picker.css">
|
|
</head>
|
|
<body>
|
|
<!-- Provide site root to javascript -->
|
|
<script type="text/javascript">
|
|
var path_to_root = "";
|
|
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
|
|
</script>
|
|
|
|
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
|
<script type="text/javascript">
|
|
try {
|
|
var theme = localStorage.getItem('mdbook-theme');
|
|
var sidebar = localStorage.getItem('mdbook-sidebar');
|
|
if (theme.startsWith('"') && theme.endsWith('"')) {
|
|
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
|
|
}
|
|
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
|
|
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
|
|
}
|
|
} catch (e) { }
|
|
</script>
|
|
|
|
<!-- Set the theme before any content is loaded, prevents flash -->
|
|
<script type="text/javascript">
|
|
var theme;
|
|
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
|
|
if (theme === null || theme === undefined) { theme = default_theme; }
|
|
var html = document.querySelector('html');
|
|
html.classList.remove('no-js')
|
|
html.classList.remove('light')
|
|
html.classList.add(theme);
|
|
html.classList.add('js');
|
|
</script>
|
|
|
|
<!-- Hide / unhide sidebar before it is displayed -->
|
|
<script type="text/javascript">
|
|
var html = document.querySelector('html');
|
|
var sidebar = 'hidden';
|
|
if (document.body.clientWidth >= 1080) {
|
|
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
|
|
sidebar = sidebar || 'visible';
|
|
}
|
|
html.classList.remove('sidebar-visible');
|
|
html.classList.add("sidebar-" + sidebar);
|
|
</script>
|
|
|
|
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
|
<div class="sidebar-scrollbox">
|
|
<ol class="chapter"><li class="chapter-item expanded affix "><li class="part-title">Introduction</li><li class="chapter-item expanded "><a href="welcome_and_overview.html">Welcome and Overview</a></li><li class="chapter-item expanded affix "><li class="part-title">Setup</li><li class="chapter-item expanded "><a href="setup/installation.html">Installation</a></li><li class="chapter-item expanded "><a href="postgres.html">Using Postgres</a></li><li class="chapter-item expanded "><a href="reverse_proxy.html">Configuring a Reverse Proxy</a></li><li class="chapter-item expanded "><a href="setup/forward_proxy.html">Configuring a Forward/Outbound Proxy</a></li><li class="chapter-item expanded "><a href="turn-howto.html">Configuring a Turn Server</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="setup/turn/coturn.html">coturn TURN server</a></li><li class="chapter-item expanded "><a href="setup/turn/eturnal.html">eturnal TURN server</a></li></ol></li><li class="chapter-item expanded "><a href="delegate.html">Delegation</a></li><li class="chapter-item expanded affix "><li class="part-title">Upgrading</li><li class="chapter-item expanded "><a href="upgrade.html">Upgrading between Synapse Versions</a></li><li class="chapter-item expanded affix "><li class="part-title">Usage</li><li class="chapter-item expanded "><a href="federate.html">Federation</a></li><li class="chapter-item expanded "><a href="usage/configuration/index.html">Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/configuration/config_documentation.html">Configuration Manual</a></li><li class="chapter-item expanded "><a href="usage/configuration/homeserver_sample_config.html">Homeserver Sample Config File</a></li><li class="chapter-item expanded "><a href="usage/configuration/logging_sample_config.html">Logging Sample Config File</a></li><li class="chapter-item expanded "><a href="structured_logging.html">Structured Logging</a></li><li class="chapter-item expanded "><a href="templates.html">Templates</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/index.html">User Authentication</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/index.html">Single-Sign On</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="openid.html">OpenID Connect</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/cas.html">CAS</a></li><li class="chapter-item expanded "><a href="sso_mapping_providers.html">SSO Mapping Providers</a></li></ol></li><li class="chapter-item expanded "><a href="password_auth_providers.html">Password Auth Providers</a></li><li class="chapter-item expanded "><a href="jwt.html">JSON Web Tokens</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/refresh_tokens.html">Refresh Tokens</a></li></ol></li><li class="chapter-item expanded "><a href="CAPTCHA_SETUP.html">Registration Captcha</a></li><li class="chapter-item expanded "><a href="application_services.html">Application Services</a></li><li class="chapter-item expanded "><a href="server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="consent_tracking.html">Consent Tracking</a></li><li class="chapter-item expanded "><a href="user_directory.html" class="active">User Directory</a></li><li class="chapter-item expanded "><a href="message_retention_policies.html">Message Retention Policies</a></li><li class="chapter-item expanded "><a href="modules/index.html">Pluggable Modules</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/writing_a_module.html">Writing a module</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/spam_checker_callbacks.html">Spam checker callbacks</a></li><li class="chapter-item expanded "><a href="modules/third_party_rules_callbacks.html">Third-party rules callbacks</a></li><li class="chapter-item expanded "><a href="modules/presence_router_callbacks.html">Presence router callbacks</a></li><li class="chapter-item expanded "><a href="modules/account_validity_callbacks.html">Account validity callbacks</a></li><li class="chapter-item expanded "><a href="modules/password_auth_provider_callbacks.html">Password auth provider callbacks</a></li><li class="chapter-item expanded "><a href="modules/background_update_controller_callbacks.html">Background update controller callbacks</a></li><li class="chapter-item expanded "><a href="modules/account_data_callbacks.html">Account data callbacks</a></li><li class="chapter-item expanded "><a href="modules/add_extra_fields_to_client_events_unsigned.html">Add extra fields to client events unsigned section callbacks</a></li><li class="chapter-item expanded "><a href="modules/porting_legacy_module.html">Porting a legacy module to the new interface</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="workers.html">Workers</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="synctl_workers.html">Using synctl with Workers</a></li><li class="chapter-item expanded "><a href="systemd-with-workers/index.html">Systemd</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="usage/administration/index.html">Administration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/administration/admin_api/index.html">Admin API</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="admin_api/account_validity.html">Account Validity</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/background_updates.html">Background Updates</a></li><li class="chapter-item expanded "><a href="admin_api/event_reports.html">Event Reports</a></li><li class="chapter-item expanded "><a href="admin_api/experimental_features.html">Experimental Features</a></li><li class="chapter-item expanded "><a href="admin_api/media_admin_api.html">Media</a></li><li class="chapter-item expanded "><a href="admin_api/purge_history_api.html">Purge History</a></li><li class="chapter-item expanded "><a href="admin_api/register_api.html">Register Users</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/registration_tokens.html">Registration Tokens</a></li><li class="chapter-item expanded "><a href="admin_api/room_membership.html">Manipulate Room Membership</a></li><li class="chapter-item expanded "><a href="admin_api/rooms.html">Rooms</a></li><li class="chapter-item expanded "><a href="admin_api/server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="admin_api/statistics.html">Statistics</a></li><li class="chapter-item expanded "><a href="admin_api/user_admin_api.html">Users</a></li><li class="chapter-item expanded "><a href="admin_api/version_api.html">Server Version</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/federation.html">Federation</a></li></ol></li><li class="chapter-item expanded "><a href="manhole.html">Manhole</a></li><li class="chapter-item expanded "><a href="metrics-howto.html">Monitoring</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/administration/monitoring/reporting_homeserver_usage_statistics.html">Reporting Homeserver Usage Statistics</a></li></ol></li><li class="chapter-item expanded "><a href="usage/administration/monthly_active_users.html">Monthly Active Users</a></li><li class="chapter-item expanded "><a href="usage/administration/understanding_synapse_through_grafana_graphs.html">Understanding Synapse Through Grafana Graphs</a></li><li class="chapter-item expanded "><a href="usage/administration/useful_sql_for_admins.html">Useful SQL for Admins</a></li><li class="chapter-item expanded "><a href="usage/administration/database_maintenance_tools.html">Database Maintenance Tools</a></li><li class="chapter-item expanded "><a href="usage/administration/state_groups.html">State Groups</a></li><li class="chapter-item expanded "><a href="usage/administration/request_log.html">Request log format</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_faq.html">Admin FAQ</a></li><li class="chapter-item expanded "><div>Scripts</div></li></ol></li><li class="chapter-item expanded "><li class="part-title">Development</li><li class="chapter-item expanded "><a href="development/contributing_guide.html">Contributing Guide</a></li><li class="chapter-item expanded "><a href="code_style.html">Code Style</a></li><li class="chapter-item expanded "><a href="development/reviews.html">Reviewing Code</a></li><li class="chapter-item expanded "><a href="development/releases.html">Release Cycle</a></li><li class="chapter-item expanded "><a href="development/git.html">Git Usage</a></li><li class="chapter-item expanded "><div>Testing</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/demo.html">Demo scripts</a></li></ol></li><li class="chapter-item expanded "><a href="opentracing.html">OpenTracing</a></li><li class="chapter-item expanded "><a href="development/database_schema.html">Database Schemas</a></li><li class="chapter-item expanded "><a href="development/experimental_features.html">Experimental features</a></li><li class="chapter-item expanded "><a href="development/dependencies.html">Dependency management</a></li><li class="chapter-item expanded "><div>Synapse Architecture</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/synapse_architecture/cancellation.html">Cancellation</a></li><li class="chapter-item expanded "><a href="log_contexts.html">Log Contexts</a></li><li class="chapter-item expanded "><a href="replication.html">Replication</a></li><li class="chapter-item expanded "><a href="development/synapse_architecture/streams.html">Streams</a></li><li class="chapter-item expanded "><a href="tcp_replication.html">TCP Replication</a></li><li class="chapter-item expanded "><a href="development/synapse_architecture/faster_joins.html">Faster remote joins</a></li></ol></li><li class="chapter-item expanded "><a href="development/internal_documentation/index.html">Internal Documentation</a></li><li><ol class="section"><li class="chapter-item expanded "><div>Single Sign-On</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="development/cas.html">CAS</a></li></ol></li><li class="chapter-item expanded "><a href="development/room-dag-concepts.html">Room DAG concepts</a></li><li class="chapter-item expanded "><div>State Resolution</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="auth_chain_difference_algorithm.html">The Auth Chain Difference Algorithm</a></li></ol></li><li class="chapter-item expanded "><a href="media_repository.html">Media Repository</a></li><li class="chapter-item expanded "><a href="room_and_user_statistics.html">Room and User Statistics</a></li></ol></li><li class="chapter-item expanded "><div>Scripts</div></li><li class="chapter-item expanded affix "><li class="part-title">Other</li><li class="chapter-item expanded "><a href="deprecation_policy.html">Dependency Deprecation Policy</a></li><li class="chapter-item expanded "><a href="other/running_synapse_on_single_board_computers.html">Running Synapse on a Single-Board Computer</a></li></ol>
|
|
</div>
|
|
<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
|
|
</nav>
|
|
|
|
<div id="page-wrapper" class="page-wrapper">
|
|
|
|
<div class="page">
|
|
<div id="menu-bar-hover-placeholder"></div>
|
|
<div id="menu-bar" class="menu-bar sticky bordered">
|
|
<div class="left-buttons">
|
|
<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
|
|
<i class="fa fa-bars"></i>
|
|
</button>
|
|
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
|
|
<i class="fa fa-paint-brush"></i>
|
|
</button>
|
|
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
|
|
<li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
|
|
</ul>
|
|
<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
|
|
<i class="fa fa-search"></i>
|
|
</button>
|
|
<div class="version-picker">
|
|
<div class="dropdown">
|
|
<div class="select">
|
|
<span></span>
|
|
<i class="fa fa-chevron-down"></i>
|
|
</div>
|
|
<input type="hidden" name="version">
|
|
<ul class="dropdown-menu">
|
|
<!-- Versions will be added dynamically in version-picker.js -->
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
|
|
<h1 class="menu-title">Synapse</h1>
|
|
|
|
<div class="right-buttons">
|
|
<a href="print.html" title="Print this book" aria-label="Print this book">
|
|
<i id="print-button" class="fa fa-print"></i>
|
|
</a>
|
|
<a href="https://github.com/matrix-org/synapse" title="Git repository" aria-label="Git repository">
|
|
<i id="git-repository-button" class="fa fa-github"></i>
|
|
</a>
|
|
<a href="https://github.com/matrix-org/synapse/edit/develop/docs/user_directory.md" title="Suggest an edit" aria-label="Suggest an edit">
|
|
<i id="git-edit-button" class="fa fa-edit"></i>
|
|
</a>
|
|
</div>
|
|
</div>
|
|
|
|
<div id="search-wrapper" class="hidden">
|
|
<form id="searchbar-outer" class="searchbar-outer">
|
|
<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
|
|
</form>
|
|
<div id="searchresults-outer" class="searchresults-outer hidden">
|
|
<div id="searchresults-header" class="searchresults-header"></div>
|
|
<ul id="searchresults">
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
|
|
<script type="text/javascript">
|
|
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
|
|
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
|
|
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
|
|
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
|
|
});
|
|
</script>
|
|
|
|
<div id="content" class="content">
|
|
<main>
|
|
<!-- Page table of contents -->
|
|
<div class="sidetoc">
|
|
<nav class="pagetoc"></nav>
|
|
</div>
|
|
|
|
<h1 id="user-directory-api-implementation"><a class="header" href="#user-directory-api-implementation">User Directory API Implementation</a></h1>
|
|
<p>The user directory is maintained based on users that are 'visible' to the homeserver -
|
|
i.e. ones which are local to the server and ones which any local user shares a
|
|
room with.</p>
|
|
<p>The directory info is stored in various tables, which can sometimes get out of
|
|
sync (although this is considered a bug). If this happens, for now the
|
|
solution to fix it is to use the <a href="usage/administration/admin_api/background_updates.html#run">admin API</a>
|
|
and execute the job <code>regenerate_directory</code>. This should then start a background task to
|
|
flush the current tables and regenerate the directory. Depending on the size
|
|
of your homeserver (number of users and rooms) this can take a while.</p>
|
|
<h2 id="data-model"><a class="header" href="#data-model">Data model</a></h2>
|
|
<p>There are five relevant tables that collectively form the "user directory".
|
|
Three of them track a list of all known users. The last two (collectively called
|
|
the "search tables") track which users are visible to each other.</p>
|
|
<p>From all of these tables we exclude three types of local user:</p>
|
|
<ul>
|
|
<li>support users</li>
|
|
<li>appservice users</li>
|
|
<li>deactivated users</li>
|
|
</ul>
|
|
<p>A description of each table follows:</p>
|
|
<ul>
|
|
<li>
|
|
<p><code>user_directory</code>. This contains the user ID, display name and avatar of each user.</p>
|
|
<ul>
|
|
<li>Because there is only one directory entry per user, it is important that it
|
|
only contain publicly visible information. Otherwise, this will leak the
|
|
nickname or avatar used in a private room.</li>
|
|
<li>Indexed on rooms. Indexed on users.</li>
|
|
</ul>
|
|
</li>
|
|
<li>
|
|
<p><code>user_directory_search</code>. To be joined to <code>user_directory</code>. It contains an extra
|
|
column that enables full text search based on user IDs and display names.
|
|
Different schemas for SQLite and Postgres are used.</p>
|
|
<ul>
|
|
<li>Indexed on the full text search data. Indexed on users.</li>
|
|
</ul>
|
|
</li>
|
|
<li>
|
|
<p><code>user_directory_stream_pos</code>. When the initial background update to populate
|
|
the directory is complete, we record a stream position here. This indicates
|
|
that synapse should now listen for room changes and incrementally update
|
|
the directory where necessary. (See <a href="development/synapse_architecture/streams.html">stream positions</a>.)</p>
|
|
</li>
|
|
<li>
|
|
<p><code>users_in_public_rooms</code>. Contains associations between users and the public
|
|
rooms they're in. Used to determine which users are in public rooms and should
|
|
be publicly visible in the directory. Both local and remote users are tracked.</p>
|
|
</li>
|
|
<li>
|
|
<p><code>users_who_share_private_rooms</code>. Rows are triples <code>(L, M, room id)</code> where <code>L</code>
|
|
is a local user and <code>M</code> is a local or remote user. <code>L</code> and <code>M</code> should be
|
|
different, but this isn't enforced by a constraint.</p>
|
|
<p>Note that if two local users share a room then there will be two entries:
|
|
<code>(user1, user2, !room_id)</code> and <code>(user2, user1, !room_id)</code>.</p>
|
|
</li>
|
|
</ul>
|
|
<h2 id="configuration-options"><a class="header" href="#configuration-options">Configuration options</a></h2>
|
|
<p>The exact way user search works can be tweaked via some server-level
|
|
<a href="usage/configuration/config_documentation.html#user_directory">configuration options</a>.</p>
|
|
<p>The information is not repeated here, but the options are mentioned below.</p>
|
|
<h2 id="search-algorithm"><a class="header" href="#search-algorithm">Search algorithm</a></h2>
|
|
<p>If <code>search_all_users</code> is <code>false</code>, then results are limited to users who:</p>
|
|
<ol>
|
|
<li>Are found in the <code>users_in_public_rooms</code> table, or</li>
|
|
<li>Are found in the <code>users_who_share_private_rooms</code> where <code>L</code> is the requesting
|
|
user and <code>M</code> is the search result.</li>
|
|
</ol>
|
|
<p>Otherwise, if <code>search_all_users</code> is <code>true</code>, no such limits are placed and all
|
|
users known to the server (matching the search query) will be returned.</p>
|
|
<p>By default, locked users are not returned. If <code>show_locked_users</code> is <code>true</code> then
|
|
no filtering on the locked status of a user is done.</p>
|
|
<p>The user provided search term is lowercased and normalized using <a href="https://en.wikipedia.org/wiki/Unicode_equivalence#Normalization">NFKC</a>,
|
|
this treats the string as case-insensitive, canonicalizes different forms of the
|
|
same text, and maps some "roughly equivalent" characters together.</p>
|
|
<p>The search term is then split into words:</p>
|
|
<ul>
|
|
<li>If <a href="https://en.wikipedia.org/wiki/International_Components_for_Unicode">ICU</a> is
|
|
available, then the system's <a href="https://unicode-org.github.io/icu/userguide/locale/#default-locales">default locale</a>
|
|
will be used to break the search term into words. (See the
|
|
<a href="setup/installation.html">installation instructions</a> for how to install ICU.)</li>
|
|
<li>If unavailable, then runs of ASCII characters, numbers, underscores, and hyphens
|
|
are considered words.</li>
|
|
</ul>
|
|
<p>The queries for PostgreSQL and SQLite are detailed below, by their overall goal
|
|
is to find matching users, preferring users who are "real" (e.g. not bots,
|
|
not deactivated). It is assumed that real users will have an display name and
|
|
avatar set.</p>
|
|
<h3 id="postgresql"><a class="header" href="#postgresql">PostgreSQL</a></h3>
|
|
<p>The above words are then transformed into two queries:</p>
|
|
<ol>
|
|
<li>"exact" which matches the parsed words exactly (using <a href="https://www.postgresql.org/docs/current/textsearch-controls.html#TEXTSEARCH-PARSING-QUERIES"><code>to_tsquery</code></a>);</li>
|
|
<li>"prefix" which matches the parsed words as prefixes (using <code>to_tsquery</code>).</li>
|
|
</ol>
|
|
<p>Results are composed of all rows in the <code>user_directory_search</code> table whose information
|
|
matches one (or both) of these queries. Results are ordered by calculating a weighted
|
|
score for each result, higher scores are returned first:</p>
|
|
<ul>
|
|
<li>4x if a user ID exists.</li>
|
|
<li>1.2x if the user has a display name set.</li>
|
|
<li>1.2x if the user has an avatar set.</li>
|
|
<li>0x-3x by the full text search results using the <a href="https://www.postgresql.org/docs/current/textsearch-controls.html#TEXTSEARCH-RANKING"><code>ts_rank_cd</code> function</a>
|
|
against the "exact" search query; this has four variables with the following weightings:
|
|
<ul>
|
|
<li><code>D</code>: 0.1 for the user ID's domain</li>
|
|
<li><code>C</code>: 0.1 for unused</li>
|
|
<li><code>B</code>: 0.9 for the user's display name (or an empty string if it is not set)</li>
|
|
<li><code>A</code>: 0.1 for the user ID's localpart</li>
|
|
</ul>
|
|
</li>
|
|
<li>0x-1x by the full text search results using the <code>ts_rank_cd</code> function against the
|
|
"prefix" search query. (Using the same weightings as above.)</li>
|
|
<li>If <code>prefer_local_users</code> is <code>true</code>, then 2x if the user is local to the homeserver.</li>
|
|
</ul>
|
|
<p>Note that <code>ts_rank_cd</code> returns a weight between 0 and 1. The initial weighting of
|
|
all results is 1.</p>
|
|
<h3 id="sqlite"><a class="header" href="#sqlite">SQLite</a></h3>
|
|
<p>Results are composed of all rows in the <code>user_directory_search</code> whose information
|
|
matches the query. Results are ordered by the following information, with each
|
|
subsequent column used as a tiebreaker, for each result:</p>
|
|
<ol>
|
|
<li>By the <a href="https://www.sqlite.org/windowfunctions.html#built_in_window_functions"><code>rank</code></a>
|
|
of the full text search results using the <a href="https://www.sqlite.org/fts3.html#matchinfo"><code>matchinfo</code> function</a>. Higher
|
|
ranks are returned first.</li>
|
|
<li>If <code>prefer_local_users</code> is <code>true</code>, then users local to the homeserver are
|
|
returned first.</li>
|
|
<li>Users with a display name set are returned first.</li>
|
|
<li>Users with an avatar set are returned first.</li>
|
|
</ol>
|
|
|
|
</main>
|
|
|
|
<nav class="nav-wrapper" aria-label="Page navigation">
|
|
<!-- Mobile navigation buttons -->
|
|
<a rel="prev" href="consent_tracking.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
<a rel="next" href="message_retention_policies.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
<div style="clear: both"></div>
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
|
|
<nav class="nav-wide-wrapper" aria-label="Page navigation">
|
|
<a rel="prev" href="consent_tracking.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
<a rel="next" href="message_retention_policies.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
</nav>
|
|
|
|
</div>
|
|
|
|
<script type="text/javascript">
|
|
window.playground_copyable = true;
|
|
</script>
|
|
<script src="elasticlunr.min.js" type="text/javascript" charset="utf-8"></script>
|
|
<script src="mark.min.js" type="text/javascript" charset="utf-8"></script>
|
|
<script src="searcher.js" type="text/javascript" charset="utf-8"></script>
|
|
<script src="clipboard.min.js" type="text/javascript" charset="utf-8"></script>
|
|
<script src="highlight.js" type="text/javascript" charset="utf-8"></script>
|
|
<script src="book.js" type="text/javascript" charset="utf-8"></script>
|
|
|
|
<!-- Custom JS scripts -->
|
|
<script type="text/javascript" src="docs/website_files/table-of-contents.js"></script>
|
|
<script type="text/javascript" src="docs/website_files/version-picker.js"></script>
|
|
<script type="text/javascript" src="docs/website_files/version.js"></script>
|
|
</body>
|
|
</html>
|