GNUsocial/gnu-social
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[CORE] Avoid materialisation in the TagNoticeStream query

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The notice.created sort forced the notice_tag by notice join plain to employ
materialisation, which can have a serious performance penalty depending on the
size of the database.
Sort by notice_tag.created instead, which should be exactly the same.
This commit is contained in:
Alexei Sorokin 2020-07-01 18:20:44 +03:00 committed by Diogo Peralta Cordeiro
parent d3e63bbac0
commit e9d1c5593d
1 changed files with 36 additions and 36 deletions
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72
lib/notices/tagnoticestream.php
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@ -1,53 +1,52 @@
<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* Stream of notices with a given tag
*
* PHP version 5
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Stream
* @package StatusNet
* @package GNUsocial
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
if (!defined('GNUSOCIAL')) { exit(1); }
defined('GNUSOCIAL') || die();
/**
* Stream of notices with a given tag
*
* @category Stream
* @package StatusNet
* @package GNUsocial
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class TagNoticeStream extends ScopingNoticeStream
{
function __construct($tag, Profile $scoped=null)
public function __construct($tag, Profile $scoped=null)
{
parent::__construct(new CachingNoticeStream(new RawTagNoticeStream($tag),
'notice_tag:notice_ids:' . Cache::keyize($tag)),
$scoped);
parent::__construct(
new CachingNoticeStream(
new RawTagNoticeStream($tag),
'notice_tag:notice_ids:' . Cache::keyize($tag)
),
$scoped
);
}
}
@ -55,23 +54,22 @@ class TagNoticeStream extends ScopingNoticeStream
* Raw stream of notices with a given tag
*
* @category Stream
* @package StatusNet
* @package GNUsocial
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class RawTagNoticeStream extends NoticeStream
{
protected $tag;
function __construct($tag)
public function __construct($tag)
{
$this->tag = $tag;
}
function getNoticeIds($offset, $limit, $since_id, $max_id)
public function getNoticeIds($offset, $limit, $since_id, $max_id)
{
$nt = new Notice_tag();
@ -92,14 +90,16 @@ class RawTagNoticeStream extends NoticeStream
$nt->whereAddIn('notice.verb', $filter, 'string');
}
$filter = array_keys(array_filter($this->selectVerbs, function ($v) { return !$v; }));
$filter = array_keys(array_filter($this->selectVerbs, function ($v) {
return !$v;
}));
if (!empty($filter)) {
// exclude verbs in selectVerbs with values that equate to false
$nt->whereAddIn('!notice.verb', $filter, 'string');
}
}
$nt->orderBy('notice.created DESC, notice_id DESC');
$nt->orderBy('notice_tag.created DESC, notice_id DESC');
if (!is_null($offset)) {
$nt->limit($offset, $limit);