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deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
2021-06-03 19:21:02 +03:00
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deploy: 84dc50e160a2ec6590813374b5a1e58b97f7a18d
2021-12-01 21:12:48 +03:00
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deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
2021-06-03 19:21:02 +03:00
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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>
deploy: ece84f2c450d986e54acc80971225fb02f4e1d05
2021-11-01 14:36:20 +03:00
<pre><code class="language-json">{
deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
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&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>
deploy: 8840a7b7f1074073c49135d13918d9e4d4a04577
2021-11-12 15:35:56 +03:00
<p>If <code>status</code> is <code>failed</code> there will be a string <code>error</code> with the error message.</p>
deploy: fd9856e4a98fb3fa9c139317b0a3b79f22aff1c7
2021-06-03 19:21:02 +03:00
<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: 430241a1e9fd4fbb82d83958b61bbd66c9ba3505
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