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deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
2021-06-03 19:21:02 +03:00
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deploy: cdd308845ba22fef22a39ed5bf904b438e48b491
2021-10-13 14:22:18 +03:00
<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 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 "><a href="../MSC1711_certificates_FAQ.html">Upgrading from pre-Synapse 1.0</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/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 "><div>Single-Sign On</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="../openid.html">OpenID Connect</a></li><li class="chapter-item expanded "><div>SAML</div></li><li class="chapter-item expanded "><div>CAS</div></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></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="../development/url_previews.html">URL Previews</a></li><li class="chapter-item expanded "><a href="../user_directory.html">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
deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
2021-06-03 19:21:02 +03:00
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<h1 class="menu-title">Synapse</h1>
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<h1 id="purge-history-api"><a class="header" href="#purge-history-api">Purge History API</a></h1>
<p>The purge history API allows server admins to purge historic events from their
database, reclaiming disk space.</p>
<p>Depending on the amount of history being purged a call to the API may take
several minutes or longer. During this period users will not be able to
paginate further back in the room from the point being purged from.</p>
<p>Note that Synapse requires at least one message in each room, so it will never
delete the last message in a room.</p>
<p>The API is:</p>
<pre><code>POST /_synapse/admin/v1/purge_history/&lt;room_id&gt;[/&lt;event_id&gt;]
</code></pre>
<p>To use it, you will need to authenticate by providing an <code>access_token</code> for a
deploy: 0adc2882c1a67419207a500f00c41a94be51857a
2021-06-16 15:16:14 +03:00
server admin: <a href="../usage/administration/admin_api">Admin API</a></p>
deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
2021-06-03 19:21:02 +03:00
<p>By default, events sent by local users are not deleted, as they may represent
the only copies of this content in existence. (Events sent by remote users are
deleted.)</p>
<p>Room state data (such as joins, leaves, topic) is always preserved.</p>
<p>To delete local message events as well, set <code>delete_local_events</code> in the body:</p>
<pre><code>{
&quot;delete_local_events&quot;: true
}
</code></pre>
<p>The caller must specify the point in the room to purge up to. This can be
specified by including an event_id in the URI, or by setting a
<code>purge_up_to_event_id</code> or <code>purge_up_to_ts</code> in the request body. If an event
id is given, that event (and others at the same graph depth) will be retained.
If <code>purge_up_to_ts</code> is given, it should be a timestamp since the unix epoch,
in milliseconds.</p>
<p>The API starts the purge running, and returns immediately with a JSON body with
a purge id:</p>
<pre><code class="language-json">{
&quot;purge_id&quot;: &quot;&lt;opaque id&gt;&quot;
}
</code></pre>
<h2 id="purge-status-query"><a class="header" href="#purge-status-query">Purge status query</a></h2>
<p>It is possible to poll for updates on recent purges with a second API;</p>
<pre><code>GET /_synapse/admin/v1/purge_history_status/&lt;purge_id&gt;
</code></pre>
<p>Again, you will need to authenticate by providing an <code>access_token</code> for a
server admin.</p>
<p>This API returns a JSON body like the following:</p>
<pre><code class="language-json">{
&quot;status&quot;: &quot;active&quot;
}
</code></pre>
<p>The status will be one of <code>active</code>, <code>complete</code>, or <code>failed</code>.</p>
<h2 id="reclaim-disk-space-postgres"><a class="header" href="#reclaim-disk-space-postgres">Reclaim disk space (Postgres)</a></h2>
<p>To reclaim the disk space and return it to the operating system, you need to run
<code>VACUUM FULL;</code> on the database.</p>
<p><a href="https://www.postgresql.org/docs/current/sql-vacuum.html">https://www.postgresql.org/docs/current/sql-vacuum.html</a></p>
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deploy: 430241a1e9fd4fbb82d83958b61bbd66c9ba3505
2021-08-17 23:19:39 +03:00
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deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
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deploy: 430241a1e9fd4fbb82d83958b61bbd66c9ba3505
2021-08-17 23:19:39 +03:00
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