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Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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friendica/src/Worker/DBClean.php

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<?php
/**
* @file src/Worker/DBClean.php
* @brief The script is called from time to time to clean the database entries and remove orphaned data.
*/
namespace Friendica\Worker;
use Friendica\Core\Config;
use Friendica\Core\Logger;
use Friendica\Core\Worker;
use Friendica\Database\DBA;
class DBClean {
public static function execute($stage = 0) {
if (!Config::get('system', 'dbclean', false)) {
return;
}
if ($stage == 0) {
self::forkCleanProcess();
} else {
self::removeOrphans($stage);
}
}
/**
* @brief Fork the different DBClean processes
*/
private static function forkCleanProcess() {
// Get the expire days for step 8 and 9
$days = Config::get('system', 'dbclean-expire-days', 0);
for ($i = 1; $i <= 10; $i++) {
// Execute the background script for a step when it isn't finished.
// Execute step 8 and 9 only when $days is defined.
if (!Config::get('system', 'finished-dbclean-'.$i, false) && (($i < 8) || ($i > 9) || ($days > 0))) {
Worker::add(PRIORITY_LOW, 'DBClean', $i);
}
}
}
/**
* @brief Remove orphaned database entries
* @param integer $stage What should be deleted?
*
* Values for $stage:
* ------------------
* 1: Old global item entries from item table without user copy.
* 2: Items without parents.
* 3: Orphaned data from thread table.
* 4: Orphaned data from notify table.
* 5: Orphaned data from notify-threads table.
* 6: Orphaned data from sign table.
* 7: Orphaned data from term table.
* 8: Expired threads.
* 9: Old global item entries from expired threads.
* 10: Old conversations.
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function removeOrphans($stage) {
// We split the deletion in many small tasks
$limit = Config::get('system', 'dbclean-expire-limit', 1000);
// Get the expire days for step 8 and 9
$days = Config::get('system', 'dbclean-expire-days', 0);
$days_unclaimed = Config::get('system', 'dbclean-expire-unclaimed', 90);
if ($days_unclaimed == 0) {
$days_unclaimed = $days;
}
if ($stage == 1) {
if ($days_unclaimed <= 0) {
return;
}
$last_id = Config::get('system', 'dbclean-last-id-1', 0);
Logger::log("Deleting old global item entries from item table without user copy. Last ID: ".$last_id);
$r = DBA::p("SELECT `id` FROM `item` WHERE `uid` = 0 AND
NOT EXISTS (SELECT `guid` FROM `item` AS `i` WHERE `item`.`guid` = `i`.`guid` AND `i`.`uid` != 0) AND
`received` < UTC_TIMESTAMP() - INTERVAL ? DAY AND `id` >= ?
ORDER BY `id` LIMIT ?", $days_unclaimed, $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found global item orphans: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["id"];
DBA::delete('item', ['id' => $orphan["id"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 1, $last_id);
} else {
Logger::log("No global item orphans found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." old global item entries from item table without user copy. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-1', $last_id);
} elseif ($stage == 2) {
$last_id = Config::get('system', 'dbclean-last-id-2', 0);
Logger::log("Deleting items without parents. Last ID: ".$last_id);
$r = DBA::p("SELECT `id` FROM `item`
WHERE NOT EXISTS (SELECT `id` FROM `item` AS `i` WHERE `item`.`parent` = `i`.`id`)
AND `id` >= ? ORDER BY `id` LIMIT ?", $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found item orphans without parents: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["id"];
DBA::delete('item', ['id' => $orphan["id"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 2, $last_id);
} else {
Logger::log("No item orphans without parents found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." items without parents. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-2', $last_id);
if ($count < $limit) {
Config::set('system', 'finished-dbclean-2', true);
}
} elseif ($stage == 3) {
$last_id = Config::get('system', 'dbclean-last-id-3', 0);
Logger::log("Deleting orphaned data from thread table. Last ID: ".$last_id);
$r = DBA::p("SELECT `iid` FROM `thread`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`parent` = `thread`.`iid`) AND `iid` >= ?
ORDER BY `iid` LIMIT ?", $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found thread orphans: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["iid"];
DBA::delete('thread', ['iid' => $orphan["iid"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 3, $last_id);
} else {
Logger::log("No thread orphans found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." orphaned data from thread table. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-3', $last_id);
if ($count < $limit) {
Config::set('system', 'finished-dbclean-3', true);
}
} elseif ($stage == 4) {
$last_id = Config::get('system', 'dbclean-last-id-4', 0);
Logger::log("Deleting orphaned data from notify table. Last ID: ".$last_id);
$r = DBA::p("SELECT `iid`, `id` FROM `notify`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `notify`.`iid`) AND `id` >= ?
ORDER BY `id` LIMIT ?", $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found notify orphans: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["id"];
DBA::delete('notify', ['iid' => $orphan["iid"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 4, $last_id);
} else {
Logger::log("No notify orphans found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." orphaned data from notify table. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-4', $last_id);
if ($count < $limit) {
Config::set('system', 'finished-dbclean-4', true);
}
} elseif ($stage == 5) {
$last_id = Config::get('system', 'dbclean-last-id-5', 0);
Logger::log("Deleting orphaned data from notify-threads table. Last ID: ".$last_id);
$r = DBA::p("SELECT `id` FROM `notify-threads`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`parent` = `notify-threads`.`master-parent-item`) AND `id` >= ?
ORDER BY `id` LIMIT ?", $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found notify-threads orphans: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["id"];
DBA::delete('notify-threads', ['id' => $orphan["id"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 5, $last_id);
} else {
Logger::log("No notify-threads orphans found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." orphaned data from notify-threads table. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-5', $last_id);
if ($count < $limit) {
Config::set('system', 'finished-dbclean-5', true);
}
} elseif ($stage == 6) {
$last_id = Config::get('system', 'dbclean-last-id-6', 0);
Logger::log("Deleting orphaned data from sign table. Last ID: ".$last_id);
$r = DBA::p("SELECT `iid`, `id` FROM `sign`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `sign`.`iid`) AND `id` >= ?
ORDER BY `id` LIMIT ?", $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found sign orphans: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["id"];
DBA::delete('sign', ['iid' => $orphan["iid"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 6, $last_id);
} else {
Logger::log("No sign orphans found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." orphaned data from sign table. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-6', $last_id);
if ($count < $limit) {
Config::set('system', 'finished-dbclean-6', true);
}
} elseif ($stage == 7) {
$last_id = Config::get('system', 'dbclean-last-id-7', 0);
Logger::log("Deleting orphaned data from term table. Last ID: ".$last_id);
$r = DBA::p("SELECT `oid`, `tid` FROM `term`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `term`.`oid`) AND `tid` >= ?
ORDER BY `tid` LIMIT ?", $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found term orphans: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["tid"];
DBA::delete('term', ['oid' => $orphan["oid"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 7, $last_id);
} else {
Logger::log("No term orphans found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." orphaned data from term table. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-7', $last_id);
if ($count < $limit) {
Config::set('system', 'finished-dbclean-7', true);
}
} elseif ($stage == 8) {
if ($days <= 0) {
return;
}
$last_id = Config::get('system', 'dbclean-last-id-8', 0);
Logger::log("Deleting expired threads. Last ID: ".$last_id);
$r = DBA::p("SELECT `thread`.`iid` FROM `thread`
INNER JOIN `contact` ON `thread`.`contact-id` = `contact`.`id` AND NOT `notify_new_posts`
WHERE `thread`.`received` < UTC_TIMESTAMP() - INTERVAL ? DAY
AND NOT `thread`.`mention` AND NOT `thread`.`starred`
AND NOT `thread`.`wall` AND NOT `thread`.`origin`
AND `thread`.`uid` != 0 AND `thread`.`iid` >= ?
AND NOT `thread`.`iid` IN (SELECT `parent` FROM `item`
WHERE (`item`.`starred` OR (`item`.`resource-id` != '')
OR (`item`.`file` != '') OR (`item`.`event-id` != '')
OR (`item`.`attach` != '') OR `item`.`wall` OR `item`.`origin`)
AND `item`.`parent` = `thread`.`iid`)
ORDER BY `thread`.`iid` LIMIT ?", $days, $last_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found expired threads: ".$count);
while ($thread = DBA::fetch($r)) {
$last_id = $thread["iid"];
DBA::delete('thread', ['iid' => $thread["iid"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 8, $last_id);
} else {
Logger::log("No expired threads found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." expired threads. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-8', $last_id);
} elseif ($stage == 9) {
if ($days <= 0) {
return;
}
$last_id = Config::get('system', 'dbclean-last-id-9', 0);
$till_id = Config::get('system', 'dbclean-last-id-8', 0);
Logger::log("Deleting old global item entries from expired threads from ID ".$last_id." to ID ".$till_id);
$r = DBA::p("SELECT `id` FROM `item` WHERE `uid` = 0 AND
NOT EXISTS (SELECT `guid` FROM `item` AS `i` WHERE `item`.`guid` = `i`.`guid` AND `i`.`uid` != 0) AND
`received` < UTC_TIMESTAMP() - INTERVAL 90 DAY AND `id` >= ? AND `id` <= ?
ORDER BY `id` LIMIT ?", $last_id, $till_id, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found global item entries from expired threads: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["id"];
DBA::delete('item', ['id' => $orphan["id"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 9, $last_id);
} else {
Logger::log("No global item entries from expired threads");
}
DBA::close($r);
Logger::log("Done deleting ".$count." old global item entries from expired threads. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-9', $last_id);
} elseif ($stage == 10) {
$last_id = Config::get('system', 'dbclean-last-id-10', 0);
$days = intval(Config::get('system', 'dbclean_expire_conversation', 90));
Logger::log("Deleting old conversations. Last created: ".$last_id);
$r = DBA::p("SELECT `received`, `item-uri` FROM `conversation`
WHERE `received` < UTC_TIMESTAMP() - INTERVAL ? DAY
ORDER BY `received` LIMIT ?", $days, $limit);
$count = DBA::numRows($r);
if ($count > 0) {
Logger::log("found old conversations: ".$count);
while ($orphan = DBA::fetch($r)) {
$last_id = $orphan["received"];
DBA::delete('conversation', ['item-uri' => $orphan["item-uri"]]);
}
Worker::add(PRIORITY_MEDIUM, 'DBClean', 10, $last_id);
} else {
Logger::log("No old conversations found");
}
DBA::close($r);
Logger::log("Done deleting ".$count." conversations. Last created: ".$last_id);
Config::set('system', 'dbclean-last-id-10', $last_id);
}
}
}