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Avoid double update runs

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This commit is contained in:
Philipp Holzer 2019-03-09 20:25:39 +01:00
parent d67ae7cbdd
commit e46a7cdf80
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GPG key ID: 517BE60E2CE5C8A5
1 changed files with 65 additions and 54 deletions
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35
src/Core/Update.php
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@ -68,26 +68,26 @@ class Update
Lock::release('dbupdate', true);
}
$build = Config::get('system', 'build');
$current = intval(DB_UPDATE_VERSION);
$stored = self::getBuild();
if (empty($build) || ($build > DB_UPDATE_VERSION)) {
$build = DB_UPDATE_VERSION - 1;
Config::set('system', 'build', $build);
}
if ($build != DB_UPDATE_VERSION || $force) {
if ($stored < $current || $force) {
require_once 'update.php';
$stored = intval($build);
$current = intval(DB_UPDATE_VERSION);
if ($stored < $current || $force) {
Config::load('database');
Logger::log('Update from \'' . $stored . '\' to \'' . $current . '\' - starting', Logger::DEBUG);
// Compare the current structure with the defined structure
// If the Lock is acquired, never release it automatically to avoid double updates
if (Lock::acquire('dbupdate', 120, Cache::INFINITE)) {
if (Lock::acquire('dbupdate', 0, Cache::INFINITE)) {
// recheck again in case we accidentally spawned multiple updates
$stored = intval(self::getBuild());
if ($stored >= $current) {
Lock::release('dbupdate');
return '';
}
// run the pre_update_nnnn functions in update.php
for ($x = $stored + 1; $x <= $current; $x++) {
@ -131,7 +131,6 @@ class Update
Lock::release('dbupdate');
}
}
}
return '';
}
@ -293,4 +292,16 @@ class Update
//try the logger
Logger::log("Database structure update successful.", Logger::TRACE);
}
private static function getBuild()
{
$build = Config::get('system', 'build');
if (empty($build) || ($build > DB_UPDATE_VERSION)) {
$build = DB_UPDATE_VERSION - 1;
Config::set('system', 'build', $build);
}
return (is_int($build) ? intval($build) : DB_UPDATE_VERSION - 1);
}
}