gnu-social/actions/sup.php
Alexei Sorokin 194976135f [DATABASE] Some query improvements
Make common_sql_weight employ standard SQL functions for the timestamp
difference in seconds.
Also replace UTC_TIMESTAMP in the MariaDB-specific part with CURRENT_TIMESTAMP
as it is the only occurence and GNU social sets UTC as a default timezone.

In a delete_orphan_files.php script simplify the main query considerably.

In clean_profiles.php stop using COUNT as if it is ANY, that is unnecessary
punishment for the database. Instead implement the anti-join with a
left outer join.

In Autocomplete and Activitypub_profile use joins instead of a WHERE OR
anti-pattern for the semi-joins.

In lib/ui/galleryaction.php replace a CROSS JOIN with an INNER JOIN.

In actions/sup.php remove a redundant subquery: WHERE is applied before
grouping either way.
2020-06-10 16:52:00 +03:00

89 lines
2.6 KiB
PHP

<?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/>.
defined('GNUSOCIAL') || die();
// @todo FIXME: documentation needed.
class SupAction extends Action
{
public function handle()
{
parent::handle();
$seconds = $this->trimmed('seconds');
if (!$seconds) {
$seconds = 15;
}
$updates = $this->getUpdates($seconds);
header('Content-Type: application/json; charset=utf-8');
print json_encode(array('updated_time' => date('c'),
'since_time' => date('c', time() - $seconds),
'available_periods' => $this->availablePeriods(),
'period' => $seconds,
'updates' => $updates));
}
public function availablePeriods()
{
static $periods = array(86400, 43200, 21600, 7200,
3600, 1800, 600, 300, 120,
60, 30, 15);
$available = array();
foreach ($periods as $period) {
$available[$period] = common_local_url(
'sup',
['seconds' => $period]
);
}
return $available;
}
public function getUpdates($seconds)
{
$notice = new Notice();
// XXX: cache this. Depends on how big this protocol becomes;
// Re-doing this query every 15 seconds isn't the end of the world.
$divider = common_sql_date(time() - $seconds);
$notice->selectAdd();
$notice->selectAdd('profile_id, MAX(id) AS max_id');
$notice->whereAdd("created > TIMESTAMP '{$divider}'");
$notice->groupBy('profile_id');
$updates = [];
if ($notice->find()) {
while ($notice->fetch()) {
$updates[] = [$notice->profile_id, $notice->max_id];
}
}
return $updates;
}
public function isReadOnly($args)
{
return true;
}
}