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friendica/include/dbclean.php

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11 KiB
PHP
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<?php
/**
* @file include/dbclean.php
* @brief The script is called from time to time to clean the database entries and remove orphaned data.
*/
use Friendica\Core\Config;
use Friendica\Core\Worker;
function dbclean_run(&$argv, &$argc) {
if (!Config::get('system', 'dbclean', false)) {
return;
}
if ($argc == 2) {
$stage = intval($argv[1]);
} else {
$stage = 0;
}
// Get the expire days for step 8 and 9
$days = Config::get('system', 'dbclean-expire-days', 0);
if ($stage == 0) {
for ($i = 1; $i <= 9; $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) && (($i < 8) || ($days > 0))) {
Worker::add(PRIORITY_LOW, 'dbclean', $i);
}
}
} else {
remove_orphans($stage);
}
}
/**
* @brief Remove orphaned database entries
* @param integer $stage What should be deleted?
*
* Values for $stage:
* ------------------
* 1: Old global item entries from item table without user copy.
* 2: Items without parents.
* 3: Orphaned data from thread table.
* 4: Orphaned data from notify table.
* 5: Orphaned data from notify-threads table.
* 6: Orphaned data from sign table.
* 7: Orphaned data from term table.
* 8: Expired threads.
* 9: Old global item entries from expired threads
*/
function remove_orphans($stage = 0) {
global $db;
$count = 0;
// We split the deletion in many small tasks
$limit = 1000;
// Get the expire days for step 8 and 9
$days = Config::get('system', 'dbclean-expire-days', 0);
if ($stage == 1) {
$last_id = Config::get('system', 'dbclean-last-id-1', 0);
logger("Deleting old global item entries from item table without user copy. Last ID: ".$last_id);
$r = dba::p("SELECT `id` FROM `item` WHERE `uid` = 0 AND
NOT EXISTS (SELECT `guid` FROM `item` AS `i` WHERE `item`.`guid` = `i`.`guid` AND `i`.`uid` != 0) AND
`received` < UTC_TIMESTAMP() - INTERVAL 90 DAY AND `id` >= ?
ORDER BY `id` LIMIT ".intval($limit), $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found global item orphans: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["id"];
dba::delete('item', array('id' => $orphan["id"]));
}
} else {
logger("No global item orphans found");
}
dba::close($r);
logger("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) {
$last_id = Config::get('system', 'dbclean-last-id-2', 0);
logger("Deleting items without parents. Last ID: ".$last_id);
$r = dba::p("SELECT `id` FROM `item`
WHERE NOT EXISTS (SELECT `id` FROM `item` AS `i` WHERE `item`.`parent` = `i`.`id`)
AND `id` >= ? ORDER BY `id` LIMIT ".intval($limit), $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found item orphans without parents: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["id"];
dba::delete('item', array('id' => $orphan["id"]));
}
} else {
logger("No item orphans without parents found");
}
dba::close($r);
logger("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) {
$last_id = Config::get('system', 'dbclean-last-id-3', 0);
logger("Deleting orphaned data from thread table. Last ID: ".$last_id);
$r = dba::p("SELECT `iid` FROM `thread`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`parent` = `thread`.`iid`) AND `iid` >= ?
ORDER BY `iid` LIMIT ".intval($limit), $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found thread orphans: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["iid"];
dba::delete('thread', array('iid' => $orphan["iid"]));
}
} else {
logger("No thread orphans found");
}
dba::close($r);
logger("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) {
$last_id = Config::get('system', 'dbclean-last-id-4', 0);
logger("Deleting orphaned data from notify table. Last ID: ".$last_id);
$r = dba::p("SELECT `iid`, `id` FROM `notify`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `notify`.`iid`) AND `id` >= ?
ORDER BY `id` LIMIT ".intval($limit), $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found notify orphans: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["id"];
dba::delete('notify', array('iid' => $orphan["iid"]));
}
} else {
logger("No notify orphans found");
}
dba::close($r);
logger("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) {
$last_id = Config::get('system', 'dbclean-last-id-5', 0);
logger("Deleting orphaned data from notify-threads table. Last ID: ".$last_id);
$r = dba::p("SELECT `id` FROM `notify-threads`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`parent` = `notify-threads`.`master-parent-item`) AND `id` >= ?
ORDER BY `id` LIMIT ".intval($limit), $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found notify-threads orphans: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["id"];
dba::delete('notify-threads', array('id' => $orphan["id"]));
}
} else {
logger("No notify-threads orphans found");
}
dba::close($r);
logger("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) {
$last_id = Config::get('system', 'dbclean-last-id-6', 0);
logger("Deleting orphaned data from sign table. Last ID: ".$last_id);
$r = dba::p("SELECT `iid`, `id` FROM `sign`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `sign`.`iid`) AND `id` >= ?
ORDER BY `id` LIMIT ".intval($limit), $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found sign orphans: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["id"];
dba::delete('sign', array('iid' => $orphan["iid"]));
}
} else {
logger("No sign orphans found");
}
dba::close($r);
logger("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) {
$last_id = Config::get('system', 'dbclean-last-id-7', 0);
logger("Deleting orphaned data from term table. Last ID: ".$last_id);
$r = dba::p("SELECT `oid`, `tid` FROM `term`
WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `term`.`oid`) AND `tid` >= ?
ORDER BY `tid` LIMIT ".intval($limit), $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found term orphans: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["tid"];
dba::delete('term', array('oid' => $orphan["oid"]));
}
} else {
logger("No term orphans found");
}
dba::close($r);
logger("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;
}
$last_id = Config::get('system', 'dbclean-last-id-8', 0);
logger("Deleting expired threads. Last ID: ".$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 1000", $days, $last_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found expired threads: ".$count);
while ($thread = dba::fetch($r)) {
$last_id = $thread["iid"];
dba::delete('thread', array('iid' => $thread["iid"]));
}
} else {
logger("No expired threads found");
}
dba::close($r);
logger("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);
$till_id = Config::get('system', 'dbclean-last-id-8', 0);
logger("Deleting old global item entries from expired threads from ID ".$last_id." to ID ".$till_id);
$r = dba::p("SELECT `id` FROM `item` WHERE `uid` = 0 AND
NOT EXISTS (SELECT `guid` FROM `item` AS `i` WHERE `item`.`guid` = `i`.`guid` AND `i`.`uid` != 0) AND
`received` < UTC_TIMESTAMP() - INTERVAL 90 DAY AND `id` >= ? AND `id` <= ?
ORDER BY `id` LIMIT ".intval($limit), $last_id, $till_id);
$count = dba::num_rows($r);
if ($count > 0) {
logger("found global item entries from expired threads: ".$count);
while ($orphan = dba::fetch($r)) {
$last_id = $orphan["id"];
dba::delete('item', array('id' => $orphan["id"]));
}
} else {
logger("No global item entries from expired threads");
}
dba::close($r);
logger("Done deleting ".$count." old global item entries from expired threads. Last ID: ".$last_id);
Config::set('system', 'dbclean-last-id-9', $last_id);
}
// Call it again if not all entries were purged
if (($stage != 0) && ($count > 0)) {
Worker::add(PRIORITY_MEDIUM, 'dbclean');
}
}
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