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Merge pull request #9472 from annando/item-lock

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Avoiding database lock
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Hypolite Petovan 2020-10-30 14:57:37 -04:00 committed by GitHub
commit f91ab57543
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 37 additions and 25 deletions
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28
src/Model/Contact.php
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@ -91,6 +91,8 @@ class Contact
* @}
*/
const LOCK_INSERT = 'contact-insert';
/**
* Account types
*
@ -1125,19 +1127,23 @@ class Contact
$condition = ['nurl' => Strings::normaliseLink($data["url"]), 'uid' => $uid, 'deleted' => false];
// Before inserting we do check if the entry does exist now.
DBA::lock('contact');
$contact = DBA::selectFirst('contact', ['id'], $condition, ['order' => ['id']]);
if (DBA::isResult($contact)) {
$contact_id = $contact['id'];
Logger::notice('Contact had been created (shortly) before', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
} else {
DBA::insert('contact', $fields);
$contact_id = DBA::lastInsertId();
if ($contact_id) {
Logger::info('Contact inserted', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
if (DI::lock()->acquire(self::LOCK_INSERT, 0)) {
$contact = DBA::selectFirst('contact', ['id'], $condition, ['order' => ['id']]);
if (DBA::isResult($contact)) {
$contact_id = $contact['id'];
Logger::notice('Contact had been created (shortly) before', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
} else {
DBA::insert('contact', $fields);
$contact_id = DBA::lastInsertId();
if ($contact_id) {
Logger::info('Contact inserted', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
}
}
DI::lock()->release(self::LOCK_INSERT);
} else {
Logger::warning('Contact lock had not been acquired');
}
DBA::unlock();
if (!$contact_id) {
Logger::info('Contact was not inserted', ['url' => $url, 'uid' => $uid]);
return 0;

34
src/Model/Item.php
View file

@ -71,6 +71,8 @@ class Item
const PT_FETCHED = 75;
const PT_PERSONAL_NOTE = 128;
const LOCK_INSERT = 'item-insert';
// Field list that is used to display the items
const DISPLAY_FIELDLIST = [
'uid', 'id', 'parent', 'uri-id', 'uri', 'thr-parent', 'parent-uri', 'guid', 'network', 'gravity',
@ -1889,24 +1891,28 @@ class Item
}
}
DBA::lock('item');
if (DI::lock()->acquire(self::LOCK_INSERT, 0)) {
$condition = ['uri-id' => $item['uri-id'], 'uid' => $item['uid'], 'network' => $item['network']];
if (DBA::exists('item', $condition)) {
DI::lock()->release(self::LOCK_INSERT);
Logger::notice('Item is already inserted - aborting', $condition);
return 0;
}
$condition = ['uri-id' => $item['uri-id'], 'uid' => $item['uid'], 'network' => $item['network']];
if (DBA::exists('item', $condition)) {
DBA::unlock();
Logger::notice('Item is already inserted - aborting', $condition);
return 0;
$result = DBA::insert('item', $item);
// When the item was successfully stored we fetch the ID of the item.
$current_post = DBA::lastInsertId();
DI::lock()->release(self::LOCK_INSERT);
} else {
Logger::warning('Item lock had not been acquired');
$result = false;
$current_post = 0;
}
$ret = DBA::insert('item', $item);
// When the item was successfully stored we fetch the ID of the item.
$current_post = DBA::lastInsertId();
DBA::unlock();
if (!DBA::isResult($ret) || ($current_post == 0)) {
if (empty($current_post) || !DBA::isResult($result)) {
// On failure store the data into a spool file so that the "SpoolPost" worker can try again later.
Logger::warning('Could not store item. it will be spooled', ['ret' => $ret, 'id' => $current_post]);
Logger::warning('Could not store item. it will be spooled', ['result' => $result, 'id' => $current_post]);
self::spool($orig_item);
return 0;
}