forked from GNUsocial/gnu-social
ec86de2bc4
Instead of relying on the MariaDB's ON UPDATE CURRENT_TIMESTAMP trigger update "modified" attributes in Managed_DataObject. Every raw query that needs adjusting is adjusted, as they won't update "modified" automatically anymore. The main goal behind this change is to fix "modified" updates on PostgreSQL.
126 lines
4.6 KiB
PHP
126 lines
4.6 KiB
PHP
<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Table Definition for queue_item
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*/
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defined('GNUSOCIAL') || die();
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class Queue_item extends Managed_DataObject
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{
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###START_AUTOCODE
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/* the code below is auto generated do not remove the above tag */
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public $__table = 'queue_item'; // table name
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public $id; // int(4) primary_key not_null
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public $frame; // blob not_null
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public $transport; // varchar(32)
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public $created; // datetime()
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public $claimed; // datetime()
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/* the code above is auto generated do not remove the tag below */
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###END_AUTOCODE
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public static function schemaDef()
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{
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return array(
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'fields' => array(
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'id' => array('type' => 'serial', 'not null' => true, 'description' => 'unique identifier'),
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'frame' => array('type' => 'blob', 'not null' => true, 'description' => 'data: object reference or opaque string'),
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'transport' => array('type' => 'varchar', 'length' => 32, 'not null' => true, 'description' => 'queue for what? "email", "xmpp", "sms", "irc", ...'),
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'created' => array('type' => 'datetime', 'description' => 'date this record was created'),
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'claimed' => array('type' => 'datetime', 'description' => 'date this item was claimed'),
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),
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'primary key' => array('id'),
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'indexes' => array(
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'queue_item_created_idx' => array('created'),
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),
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);
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}
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/**
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* @param mixed $transports name of a single queue or array of queues to pull from
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* If not specified, checks all queues in the system.
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*/
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public static function top($transports = null, array $ignored_transports = [])
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{
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$qi = new Queue_item();
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if ($transports) {
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if (is_array($transports)) {
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// @fixme use safer escaping
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$list = implode("','", array_map(array($qi, 'escape'), $transports));
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$qi->whereAdd("transport in ('$list')");
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} else {
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$qi->transport = $transports;
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}
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}
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if (!empty($ignored_transports)) {
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// @fixme use safer escaping
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$list = implode("','", array_map(array($qi, 'escape'), $ignored_transports));
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$qi->whereAdd("transport NOT IN ('$list')");
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}
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$qi->orderBy('created');
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$qi->whereAdd('claimed is null');
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$qi->limit(1);
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$cnt = $qi->find(true);
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if ($cnt) {
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// XXX: potential race condition
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// can we force it to only update if claimed is still null
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// (or old)?
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common_log(LOG_INFO, 'claiming queue item id = ' . $qi->getID() . ' for transport ' . $qi->transport);
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$orig = clone($qi);
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$qi->claimed = common_sql_now();
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$result = $qi->update($orig);
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if ($result) {
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common_log(LOG_DEBUG, 'claim succeeded.');
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return $qi;
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} else {
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common_log(LOG_ERR, 'claim of queue item id= ' . $qi->getID() . ' for transport ' . $qi->transport . ' failed.');
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}
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}
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$qi = null;
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return null;
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}
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/**
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* Release a claimed item.
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*/
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public function releaseClaim()
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{
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$modified = common_sql_now();
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// @fixme Consider $this->sqlValue('NULL')
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$ret = $this->query(sprintf(
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<<<'END'
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UPDATE queue_item
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SET claimed = NULL, modified = %1$s
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WHERE id = %2$d
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END,
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$this->_quote($modified),
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$this->getID()
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));
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if ($ret) {
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$this->claimed = null;
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$this->modified = $modified;
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$this->encache();
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}
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}
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}
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