1623 lines
50 KiB
PHP
1623 lines
50 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2022, the Friendica project
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program 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
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Core;
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use Friendica\App\Mode;
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use Friendica\Core;
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use Friendica\Core\Worker\Entity\Process;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Util\DateTimeFormat;
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/**
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* Contains the class for the worker background job processing
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*/
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class Worker
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{
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const STATE_STARTUP = 1; // Worker is in startup. This takes most time.
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const STATE_LONG_LOOP = 2; // Worker is processing the whole - long - loop.
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const STATE_REFETCH = 3; // Worker had refetched jobs in the execution loop.
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const STATE_SHORT_LOOP = 4; // Worker is processing preassigned jobs, thus saving much time.
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const FAST_COMMANDS = ['APDelivery', 'Delivery'];
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const LOCK_PROCESS = 'worker_process';
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const LOCK_WORKER = 'worker';
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private static $up_start;
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private static $db_duration = 0;
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private static $db_duration_count = 0;
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private static $db_duration_write = 0;
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private static $db_duration_stat = 0;
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private static $lock_duration = 0;
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private static $last_update;
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private static $state;
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private static $daemon_mode = null;
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/** @var Process */
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private static $process;
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/**
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* Processes the tasks that are in the workerqueue table
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*
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* @param boolean $run_cron Should the cron processes be executed?
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* @param Process $process The current running process
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* @return void
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function processQueue($run_cron, Process $process)
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{
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self::$up_start = microtime(true);
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// At first check the maximum load. We shouldn't continue with a high load
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if (DI::system()->isMaxLoadReached()) {
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Logger::notice('Pre check: maximum load reached, quitting.');
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return;
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}
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// We now start the process. This is done after the load check since this could increase the load.
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self::$process = $process;
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// Kill stale processes every 5 minutes
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$last_cleanup = DI::config()->get('system', 'worker_last_cleaned', 0);
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if (time() > ($last_cleanup + 300)) {
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DI::config()->set('system', 'worker_last_cleaned', time());
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self::killStaleWorkers();
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}
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// Check if the system is ready
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if (!self::isReady()) {
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return;
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}
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// Now we start additional cron processes if we should do so
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if ($run_cron) {
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self::runCron();
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}
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$last_check = $starttime = time();
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self::$state = self::STATE_STARTUP;
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// We fetch the next queue entry that is about to be executed
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while ($r = self::workerProcess()) {
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if (self::IPCJobsExists(getmypid())) {
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self::IPCDeleteJobState(getmypid());
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}
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// Don't refetch when a worker fetches tasks for multiple workers
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$refetched = DI::config()->get('system', 'worker_multiple_fetch');
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foreach ($r as $entry) {
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// Assure that the priority is an integer value
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$entry['priority'] = (int)$entry['priority'];
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// The work will be done
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if (!self::execute($entry)) {
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Logger::notice('Process execution failed, quitting.');
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return;
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}
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// Trying to fetch new processes - but only once when successful
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if (!$refetched && DI::lock()->acquire(self::LOCK_PROCESS, 0)) {
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self::findWorkerProcesses();
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DI::lock()->release(self::LOCK_PROCESS);
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self::$state = self::STATE_REFETCH;
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$refetched = true;
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} else {
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self::$state = self::STATE_SHORT_LOOP;
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}
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}
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// To avoid the quitting of multiple workers only one worker at a time will execute the check
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if ((time() > $last_check + 5) && !self::getWaitingJobForPID()) {
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self::$state = self::STATE_LONG_LOOP;
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if (DI::lock()->acquire(self::LOCK_WORKER, 0)) {
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// Count active workers and compare them with a maximum value that depends on the load
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if (self::tooMuchWorkers()) {
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Logger::notice('Active worker limit reached, quitting.');
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DI::lock()->release(self::LOCK_WORKER);
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return;
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}
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// Check free memory
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if (DI::system()->isMinMemoryReached()) {
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Logger::warning('Memory limit reached, quitting.');
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DI::lock()->release(self::LOCK_WORKER);
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return;
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}
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DI::lock()->release(self::LOCK_WORKER);
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}
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$last_check = time();
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}
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// Quit the worker once every cron interval
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if (time() > ($starttime + (DI::config()->get('system', 'cron_interval') * 60))) {
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Logger::info('Process lifetime reached, respawning.');
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self::unclaimProcess($process);
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if (self::isDaemonMode()) {
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self::IPCSetJobState(true);
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} else {
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self::spawnWorker();
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}
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return;
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}
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}
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// Cleaning up. Possibly not needed, but it doesn't harm anything.
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if (self::isDaemonMode()) {
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self::IPCSetJobState(false);
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}
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Logger::info("Couldn't select a workerqueue entry, quitting process", ['pid' => getmypid()]);
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}
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/**
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* Checks if the system is ready.
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*
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* Several system parameters like memory, connections and processes are checked.
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*
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* @return boolean
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*/
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public static function isReady()
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{
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// Count active workers and compare them with a maximum value that depends on the load
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if (self::tooMuchWorkers()) {
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Logger::notice('Active worker limit reached, quitting.');
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return false;
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}
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// Do we have too few memory?
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if (DI::system()->isMinMemoryReached()) {
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Logger::warning('Memory limit reached, quitting.');
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return false;
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}
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// Possibly there are too much database connections
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if (self::maxConnectionsReached()) {
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Logger::warning('Maximum connections reached, quitting.');
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return false;
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}
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// Possibly there are too much database processes that block the system
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if (DI::system()->isMaxProcessesReached()) {
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Logger::warning('Maximum processes reached, quitting.');
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return false;
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}
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return true;
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}
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/**
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* Check if non executed tasks do exist in the worker queue
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*
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* @return boolean Returns "true" if tasks are existing
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* @throws \Exception
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*/
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public static function entriesExists()
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{
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$stamp = (float)microtime(true);
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$exists = DBA::exists('workerqueue', ["NOT `done` AND `pid` = 0 AND `next_try` < ?", DateTimeFormat::utcNow()]);
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self::$db_duration += (microtime(true) - $stamp);
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return $exists;
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}
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/**
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* Returns the number of deferred entries in the worker queue
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*
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* @return integer Number of deferred entries in the worker queue
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* @throws \Exception
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*/
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private static function deferredEntries()
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{
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$stamp = (float)microtime(true);
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$count = DBA::count('workerqueue', ["NOT `done` AND `pid` = 0 AND `retrial` > ?", 0]);
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self::$db_duration += (microtime(true) - $stamp);
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self::$db_duration_count += (microtime(true) - $stamp);
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return $count;
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}
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/**
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* Returns the number of non executed entries in the worker queue
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*
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* @return integer Number of non executed entries in the worker queue
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* @throws \Exception
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*/
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private static function totalEntries()
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{
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$stamp = (float)microtime(true);
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$count = DBA::count('workerqueue', ['done' => false, 'pid' => 0]);
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self::$db_duration += (microtime(true) - $stamp);
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self::$db_duration_count += (microtime(true) - $stamp);
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return $count;
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}
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/**
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* Returns the highest priority in the worker queue that isn't executed
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*
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* @return integer Number of active worker processes
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* @throws \Exception
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*/
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private static function highestPriority()
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{
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$stamp = (float)microtime(true);
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$condition = ["`pid` = 0 AND NOT `done` AND `next_try` < ?", DateTimeFormat::utcNow()];
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$workerqueue = DBA::selectFirst('workerqueue', ['priority'], $condition, ['order' => ['priority']]);
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self::$db_duration += (microtime(true) - $stamp);
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if (DBA::isResult($workerqueue)) {
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return $workerqueue["priority"];
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} else {
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return 0;
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}
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}
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/**
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* Returns if a process with the given priority is running
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*
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* @param integer $priority The priority that should be checked
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*
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* @return integer Is there a process running with that priority?
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* @throws \Exception
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*/
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private static function processWithPriorityActive($priority)
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{
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$condition = ["`priority` <= ? AND `pid` != 0 AND NOT `done`", $priority];
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return DBA::exists('workerqueue', $condition);
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}
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/**
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* Checks if the given file is valid to be included
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*
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* @param mixed $file
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* @return bool
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*/
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private static function validateInclude(&$file)
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{
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$orig_file = $file;
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$file = realpath($file);
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if (strpos($file, getcwd()) !== 0) {
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return false;
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}
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$file = str_replace(getcwd() . "/", "", $file, $count);
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if ($count != 1) {
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return false;
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}
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if ($orig_file !== $file) {
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return false;
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}
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$valid = false;
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if (strpos($file, "include/") === 0) {
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$valid = true;
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}
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if (strpos($file, "addon/") === 0) {
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$valid = true;
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}
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// Simply return flag
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return $valid;
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}
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/**
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* Execute a worker entry
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*
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* @param array $queue Workerqueue entry
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*
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* @return boolean "true" if further processing should be stopped
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function execute($queue)
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{
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$mypid = getmypid();
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// Quit when in maintenance
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if (DI::config()->get('system', 'maintenance', false, true)) {
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Logger::notice("Maintenance mode - quit process", ['pid' => $mypid]);
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return false;
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}
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// Constantly check the number of parallel database processes
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if (DI::system()->isMaxProcessesReached()) {
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Logger::warning("Max processes reached for process", ['pid' => $mypid]);
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return false;
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}
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// Constantly check the number of available database connections to let the frontend be accessible at any time
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if (self::maxConnectionsReached()) {
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Logger::warning("Max connection reached for process", ['pid' => $mypid]);
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return false;
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}
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$argv = json_decode($queue['parameter'], true);
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if (!is_array($argv)) {
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$argv = [];
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}
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if (!empty($queue['command'])) {
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array_unshift($argv, $queue['command']);
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}
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if (empty($argv)) {
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Logger::warning('Parameter is empty', ['queue' => $queue]);
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return false;
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}
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// Check for existance and validity of the include file
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$include = $argv[0];
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if (method_exists(sprintf('Friendica\Worker\%s', $include), 'execute')) {
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// We constantly update the "executed" date every minute to avoid being killed too soon
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if (!isset(self::$last_update)) {
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self::$last_update = strtotime($queue["executed"]);
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}
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$age = (time() - self::$last_update) / 60;
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self::$last_update = time();
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if ($age > 1) {
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$stamp = (float)microtime(true);
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DBA::update('workerqueue', ['executed' => DateTimeFormat::utcNow()], ['pid' => $mypid, 'done' => false]);
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self::$db_duration += (microtime(true) - $stamp);
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self::$db_duration_write += (microtime(true) - $stamp);
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}
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array_shift($argv);
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self::execFunction($queue, $include, $argv, true);
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$stamp = (float)microtime(true);
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$condition = ["`id` = ? AND `next_try` < ?", $queue['id'], DateTimeFormat::utcNow()];
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if (DBA::update('workerqueue', ['done' => true], $condition)) {
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DI::config()->set('system', 'last_worker_execution', DateTimeFormat::utcNow());
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}
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self::$db_duration = (microtime(true) - $stamp);
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self::$db_duration_write += (microtime(true) - $stamp);
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return true;
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}
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// The script could be provided as full path or only with the function name
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if ($include == basename($include)) {
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$include = "include/".$include.".php";
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}
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if (!self::validateInclude($include)) {
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Logger::warning("Include file is not valid", ['file' => $argv[0]]);
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$stamp = (float)microtime(true);
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DBA::delete('workerqueue', ['id' => $queue["id"]]);
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self::$db_duration = (microtime(true) - $stamp);
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self::$db_duration_write += (microtime(true) - $stamp);
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return true;
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}
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require_once $include;
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$funcname = str_replace(".php", "", basename($argv[0]))."_run";
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if (function_exists($funcname)) {
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// We constantly update the "executed" date every minute to avoid being killed too soon
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if (!isset(self::$last_update)) {
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self::$last_update = strtotime($queue["executed"]);
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}
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$age = (time() - self::$last_update) / 60;
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self::$last_update = time();
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if ($age > 1) {
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$stamp = (float)microtime(true);
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DBA::update('workerqueue', ['executed' => DateTimeFormat::utcNow()], ['pid' => $mypid, 'done' => false]);
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self::$db_duration += (microtime(true) - $stamp);
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self::$db_duration_write += (microtime(true) - $stamp);
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}
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self::execFunction($queue, $funcname, $argv, false);
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$stamp = (float)microtime(true);
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if (DBA::update('workerqueue', ['done' => true], ['id' => $queue["id"]])) {
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DI::config()->set('system', 'last_worker_execution', DateTimeFormat::utcNow());
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}
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self::$db_duration = (microtime(true) - $stamp);
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self::$db_duration_write += (microtime(true) - $stamp);
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} else {
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Logger::warning("Function does not exist", ['function' => $funcname]);
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$stamp = (float)microtime(true);
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DBA::delete('workerqueue', ['id' => $queue["id"]]);
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self::$db_duration = (microtime(true) - $stamp);
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self::$db_duration_write += (microtime(true) - $stamp);
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}
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return true;
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}
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/**
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* Execute a function from the queue
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*
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* @param array $queue Workerqueue entry
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* @param string $funcname name of the function
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* @param array $argv Array of values to be passed to the function
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* @param boolean $method_call boolean
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* @return void
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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private static function execFunction($queue, $funcname, $argv, $method_call)
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{
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$a = DI::app();
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$cooldown = DI::config()->get("system", "worker_cooldown", 0);
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if ($cooldown > 0) {
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Logger::info('Pre execution cooldown.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'cooldown' => $cooldown]);
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sleep($cooldown);
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}
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Logger::enableWorker($funcname);
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Logger::info("Process start.", ['priority' => $queue["priority"], 'id' => $queue["id"]]);
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$stamp = (float)microtime(true);
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// We use the callstack here to analyze the performance of executed worker entries.
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// For this reason the variables have to be initialized.
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DI::profiler()->reset();
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if (!in_array($queue['priority'], PRIORITIES)) {
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Logger::warning('Invalid priority', ['queue' => $queue, 'callstack' => System::callstack(20)]);
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$queue['priority'] = PRIORITY_MEDIUM;
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}
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$a->setQueue($queue);
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$up_duration = microtime(true) - self::$up_start;
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// Reset global data to avoid interferences
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unset($_SESSION);
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// Set the workerLogger as new default logger
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if ($method_call) {
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call_user_func_array(sprintf('Friendica\Worker\%s::execute', $funcname), $argv);
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} else {
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$funcname($argv, count($argv));
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}
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Logger::disableWorker();
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$a->setQueue([]);
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$duration = (microtime(true) - $stamp);
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/* With these values we can analyze how effective the worker is.
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* The database and rest time should be low since this is the unproductive time.
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* The execution time is the productive time.
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* By changing parameters like the maximum number of workers we can check the effectivness.
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*/
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$dbtotal = round(self::$db_duration, 2);
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$dbread = round(self::$db_duration - (self::$db_duration_count + self::$db_duration_write + self::$db_duration_stat), 2);
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$dbcount = round(self::$db_duration_count, 2);
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$dbstat = round(self::$db_duration_stat, 2);
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$dbwrite = round(self::$db_duration_write, 2);
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$dblock = round(self::$lock_duration, 2);
|
|
$rest = round(max(0, $up_duration - (self::$db_duration + self::$lock_duration)), 2);
|
|
$exec = round($duration, 2);
|
|
|
|
Logger::info('Performance:', ['state' => self::$state, 'count' => $dbcount, 'stat' => $dbstat, 'write' => $dbwrite, 'lock' => $dblock, 'total' => $dbtotal, 'rest' => $rest, 'exec' => $exec]);
|
|
|
|
self::$up_start = microtime(true);
|
|
self::$db_duration = 0;
|
|
self::$db_duration_count = 0;
|
|
self::$db_duration_stat = 0;
|
|
self::$db_duration_write = 0;
|
|
self::$lock_duration = 0;
|
|
|
|
if ($duration > 3600) {
|
|
Logger::info('Longer than 1 hour.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'duration' => round($duration/60, 3)]);
|
|
} elseif ($duration > 600) {
|
|
Logger::info('Longer than 10 minutes.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'duration' => round($duration/60, 3)]);
|
|
} elseif ($duration > 300) {
|
|
Logger::info('Longer than 5 minutes.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'duration' => round($duration/60, 3)]);
|
|
} elseif ($duration > 120) {
|
|
Logger::info('Longer than 2 minutes.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'duration' => round($duration/60, 3)]);
|
|
}
|
|
|
|
Logger::info('Process done.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'duration' => round($duration, 3)]);
|
|
|
|
DI::profiler()->saveLog(DI::logger(), "ID " . $queue["id"] . ": " . $funcname);
|
|
|
|
if ($cooldown > 0) {
|
|
Logger::info('Post execution cooldown.', ['priority' => $queue["priority"], 'id' => $queue["id"], 'cooldown' => $cooldown]);
|
|
sleep($cooldown);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks if the number of database connections has reached a critical limit.
|
|
*
|
|
* @return bool Are more than 3/4 of the maximum connections used?
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function maxConnectionsReached()
|
|
{
|
|
// Fetch the max value from the config. This is needed when the system cannot detect the correct value by itself.
|
|
$max = DI::config()->get("system", "max_connections");
|
|
|
|
// Fetch the percentage level where the worker will get active
|
|
$maxlevel = DI::config()->get("system", "max_connections_level", 75);
|
|
|
|
if ($max == 0) {
|
|
// the maximum number of possible user connections can be a system variable
|
|
$r = DBA::fetchFirst("SHOW VARIABLES WHERE `variable_name` = 'max_user_connections'");
|
|
if (DBA::isResult($r)) {
|
|
$max = $r["Value"];
|
|
}
|
|
// Or it can be granted. This overrides the system variable
|
|
$stamp = (float)microtime(true);
|
|
$r = DBA::p('SHOW GRANTS');
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
while ($grants = DBA::fetch($r)) {
|
|
$grant = array_pop($grants);
|
|
if (stristr($grant, "GRANT USAGE ON")) {
|
|
if (preg_match("/WITH MAX_USER_CONNECTIONS (\d*)/", $grant, $match)) {
|
|
$max = $match[1];
|
|
}
|
|
}
|
|
}
|
|
DBA::close($r);
|
|
}
|
|
|
|
// If $max is set we will use the processlist to determine the current number of connections
|
|
// The processlist only shows entries of the current user
|
|
if ($max != 0) {
|
|
$stamp = (float)microtime(true);
|
|
$r = DBA::p('SHOW PROCESSLIST');
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
$used = DBA::numRows($r);
|
|
DBA::close($r);
|
|
|
|
Logger::info("Connection usage (user values)", ['usage' => $used, 'max' => $max]);
|
|
|
|
$level = ($used / $max) * 100;
|
|
|
|
if ($level >= $maxlevel) {
|
|
Logger::warning("Maximum level (".$maxlevel."%) of user connections reached: ".$used."/".$max);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// We will now check for the system values.
|
|
// This limit could be reached although the user limits are fine.
|
|
$r = DBA::fetchFirst("SHOW VARIABLES WHERE `variable_name` = 'max_connections'");
|
|
if (!DBA::isResult($r)) {
|
|
return false;
|
|
}
|
|
$max = intval($r["Value"]);
|
|
if ($max == 0) {
|
|
return false;
|
|
}
|
|
$r = DBA::fetchFirst("SHOW STATUS WHERE `variable_name` = 'Threads_connected'");
|
|
if (!DBA::isResult($r)) {
|
|
return false;
|
|
}
|
|
$used = intval($r["Value"]);
|
|
if ($used == 0) {
|
|
return false;
|
|
}
|
|
Logger::info("Connection usage (system values)", ['used' => $used, 'max' => $max]);
|
|
|
|
$level = $used / $max * 100;
|
|
|
|
if ($level < $maxlevel) {
|
|
return false;
|
|
}
|
|
Logger::warning("Maximum level (".$level."%) of system connections reached: ".$used."/".$max);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* fix the queue entry if the worker process died
|
|
*
|
|
* @return void
|
|
* @throws \Exception
|
|
*/
|
|
private static function killStaleWorkers()
|
|
{
|
|
$stamp = (float)microtime(true);
|
|
$entries = DBA::select(
|
|
'workerqueue',
|
|
['id', 'pid', 'executed', 'priority', 'command', 'parameter'],
|
|
['NOT `done` AND `pid` != 0'],
|
|
['order' => ['priority', 'retrial', 'created']]
|
|
);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
|
|
while ($entry = DBA::fetch($entries)) {
|
|
if (!posix_kill($entry["pid"], 0)) {
|
|
$stamp = (float)microtime(true);
|
|
DBA::update(
|
|
'workerqueue',
|
|
['executed' => DBA::NULL_DATETIME, 'pid' => 0],
|
|
['id' => $entry["id"]]
|
|
);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_write += (microtime(true) - $stamp);
|
|
} else {
|
|
// Kill long running processes
|
|
// Check if the priority is in a valid range
|
|
if (!in_array($entry["priority"], [PRIORITY_CRITICAL, PRIORITY_HIGH, PRIORITY_MEDIUM, PRIORITY_LOW, PRIORITY_NEGLIGIBLE])) {
|
|
$entry["priority"] = PRIORITY_MEDIUM;
|
|
}
|
|
|
|
// Define the maximum durations
|
|
$max_duration_defaults = [PRIORITY_CRITICAL => 720, PRIORITY_HIGH => 10, PRIORITY_MEDIUM => 60, PRIORITY_LOW => 180, PRIORITY_NEGLIGIBLE => 720];
|
|
$max_duration = $max_duration_defaults[$entry["priority"]];
|
|
|
|
$argv = json_decode($entry['parameter'], true);
|
|
if (!empty($entry['command'])) {
|
|
$command = $entry['command'];
|
|
} elseif (!empty($argv)) {
|
|
$command = array_shift($argv);
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
$command = basename($command);
|
|
|
|
// How long is the process already running?
|
|
$duration = (time() - strtotime($entry["executed"])) / 60;
|
|
if ($duration > $max_duration) {
|
|
Logger::notice('Worker process took too much time - killed', ['duration' => number_format($duration, 3), 'max' => $max_duration, 'id' => $entry["id"], 'pid' => $entry["pid"], 'command' => $command]);
|
|
posix_kill($entry["pid"], SIGTERM);
|
|
|
|
// We killed the stale process.
|
|
// To avoid a blocking situation we reschedule the process at the beginning of the queue.
|
|
// Additionally we are lowering the priority. (But not PRIORITY_CRITICAL)
|
|
$new_priority = $entry["priority"];
|
|
if ($entry["priority"] == PRIORITY_HIGH) {
|
|
$new_priority = PRIORITY_MEDIUM;
|
|
} elseif ($entry["priority"] == PRIORITY_MEDIUM) {
|
|
$new_priority = PRIORITY_LOW;
|
|
} elseif ($entry["priority"] != PRIORITY_CRITICAL) {
|
|
$new_priority = PRIORITY_NEGLIGIBLE;
|
|
}
|
|
$stamp = (float)microtime(true);
|
|
DBA::update(
|
|
'workerqueue',
|
|
['executed' => DBA::NULL_DATETIME, 'created' => DateTimeFormat::utcNow(), 'priority' => $new_priority, 'pid' => 0],
|
|
['id' => $entry["id"]]
|
|
);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_write += (microtime(true) - $stamp);
|
|
} else {
|
|
Logger::info('Process runtime is okay', ['duration' => number_format($duration, 3), 'max' => $max_duration, 'id' => $entry["id"], 'pid' => $entry["pid"], 'command' => $command]);
|
|
}
|
|
}
|
|
}
|
|
DBA::close($entries);
|
|
}
|
|
|
|
/**
|
|
* Checks if the number of active workers exceeds the given limits
|
|
*
|
|
* @return bool Are there too much workers running?
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function tooMuchWorkers()
|
|
{
|
|
$queues = DI::config()->get("system", "worker_queues", 10);
|
|
|
|
$maxqueues = $queues;
|
|
|
|
$active = self::activeWorkers();
|
|
|
|
// Decrease the number of workers at higher load
|
|
$load = System::currentLoad();
|
|
if ($load) {
|
|
$maxsysload = intval(DI::config()->get("system", "maxloadavg", 20));
|
|
|
|
/* Default exponent 3 causes queues to rapidly decrease as load increases.
|
|
* If you have 20 max queues at idle, then you get only 5 queues at 37.1% of $maxsysload.
|
|
* For some environments, this rapid decrease is not needed.
|
|
* With exponent 1, you could have 20 max queues at idle and 13 at 37% of $maxsysload.
|
|
*/
|
|
$exponent = intval(DI::config()->get('system', 'worker_load_exponent', 3));
|
|
$slope = pow(max(0, $maxsysload - $load) / $maxsysload, $exponent);
|
|
$queues = intval(ceil($slope * $maxqueues));
|
|
|
|
$processlist = '';
|
|
|
|
if (DI::config()->get('system', 'worker_jpm')) {
|
|
$intervals = explode(',', DI::config()->get('system', 'worker_jpm_range'));
|
|
$jobs_per_minute = [];
|
|
foreach ($intervals as $interval) {
|
|
if ($interval == 0) {
|
|
continue;
|
|
} else {
|
|
$interval = (int)$interval;
|
|
}
|
|
|
|
$stamp = (float)microtime(true);
|
|
$jobs = DBA::count('workerqueue', ["`done` AND `executed` > ?", DateTimeFormat::utc('now - ' . $interval . ' minute')]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_stat += (microtime(true) - $stamp);
|
|
$jobs_per_minute[$interval] = number_format($jobs / $interval, 0);
|
|
}
|
|
$processlist = ' - jpm: '.implode('/', $jobs_per_minute);
|
|
}
|
|
|
|
// Create a list of queue entries grouped by their priority
|
|
$listitem = [0 => ''];
|
|
|
|
$idle_workers = $active;
|
|
|
|
$deferred = self::deferredEntries();
|
|
|
|
if (DI::config()->get('system', 'worker_debug')) {
|
|
$waiting_processes = 0;
|
|
// Now adding all processes with workerqueue entries
|
|
$stamp = (float)microtime(true);
|
|
$jobs = DBA::p("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` WHERE NOT `done` GROUP BY `priority`");
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_stat += (microtime(true) - $stamp);
|
|
while ($entry = DBA::fetch($jobs)) {
|
|
$stamp = (float)microtime(true);
|
|
$running = DBA::count('workerqueue-view', ['priority' => $entry["priority"]]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_stat += (microtime(true) - $stamp);
|
|
$idle_workers -= $running;
|
|
$waiting_processes += $entry["entries"];
|
|
$listitem[$entry["priority"]] = $entry["priority"] . ":" . $running . "/" . $entry["entries"];
|
|
}
|
|
DBA::close($jobs);
|
|
} else {
|
|
$waiting_processes = self::totalEntries();
|
|
$stamp = (float)microtime(true);
|
|
$jobs = DBA::p("SELECT COUNT(*) AS `running`, `priority` FROM `workerqueue-view` GROUP BY `priority` ORDER BY `priority`");
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_stat += (microtime(true) - $stamp);
|
|
|
|
while ($entry = DBA::fetch($jobs)) {
|
|
$idle_workers -= $entry["running"];
|
|
$listitem[$entry["priority"]] = $entry["priority"].":".$entry["running"];
|
|
}
|
|
DBA::close($jobs);
|
|
}
|
|
|
|
$waiting_processes -= $deferred;
|
|
|
|
$listitem[0] = "0:" . max(0, $idle_workers);
|
|
|
|
$processlist .= ' ('.implode(', ', $listitem).')';
|
|
|
|
if (DI::config()->get("system", "worker_fastlane", false) && ($queues > 0) && ($active >= $queues) && self::entriesExists()) {
|
|
$top_priority = self::highestPriority();
|
|
$high_running = self::processWithPriorityActive($top_priority);
|
|
|
|
if (!$high_running && ($top_priority > PRIORITY_UNDEFINED) && ($top_priority < PRIORITY_NEGLIGIBLE)) {
|
|
Logger::info("Jobs with a higher priority are waiting but none is executed. Open a fastlane.", ['priority' => $top_priority]);
|
|
$queues = $active + 1;
|
|
}
|
|
}
|
|
|
|
Logger::notice("Load: " . $load ."/" . $maxsysload . " - processes: " . $deferred . "/" . $active . "/" . $waiting_processes . $processlist . " - maximum: " . $queues . "/" . $maxqueues);
|
|
|
|
// Are there fewer workers running as possible? Then fork a new one.
|
|
if (!DI::config()->get("system", "worker_dont_fork", false) && ($queues > ($active + 1)) && self::entriesExists()) {
|
|
Logger::info("There are fewer workers as possible, fork a new worker.", ['active' => $active, 'queues' => $queues]);
|
|
if (self::isDaemonMode()) {
|
|
self::IPCSetJobState(true);
|
|
} else {
|
|
self::spawnWorker();
|
|
}
|
|
}
|
|
}
|
|
|
|
// if there are too much worker, we don't spawn a new one.
|
|
if (self::isDaemonMode() && ($active > $queues)) {
|
|
self::IPCSetJobState(false);
|
|
}
|
|
|
|
return $active > $queues;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of active worker processes
|
|
*
|
|
* @return integer Number of active worker processes
|
|
* @throws \Exception
|
|
*/
|
|
private static function activeWorkers()
|
|
{
|
|
$stamp = (float)microtime(true);
|
|
$count = DI::process()->countCommand('Worker.php');
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_count += (microtime(true) - $stamp);
|
|
return $count;
|
|
}
|
|
|
|
/**
|
|
* Returns the number of active worker processes
|
|
*
|
|
* @return array List of worker process ids
|
|
* @throws \Exception
|
|
*/
|
|
private static function getWorkerPIDList()
|
|
{
|
|
$ids = [];
|
|
$stamp = (float)microtime(true);
|
|
|
|
$queues = DBA::p("SELECT `process`.`pid`, COUNT(`workerqueue`.`pid`) AS `entries` FROM `process`
|
|
LEFT JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` AND NOT `workerqueue`.`done`
|
|
GROUP BY `process`.`pid`");
|
|
while ($queue = DBA::fetch($queues)) {
|
|
$ids[$queue['pid']] = $queue['entries'];
|
|
}
|
|
DBA::close($queues);
|
|
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_count += (microtime(true) - $stamp);
|
|
return $ids;
|
|
}
|
|
|
|
/**
|
|
* Returns waiting jobs for the current process id
|
|
*
|
|
* @return array waiting workerqueue jobs
|
|
* @throws \Exception
|
|
*/
|
|
private static function getWaitingJobForPID()
|
|
{
|
|
$stamp = (float)microtime(true);
|
|
$r = DBA::select('workerqueue', [], ['pid' => getmypid(), 'done' => false]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
if (DBA::isResult($r)) {
|
|
return DBA::toArray($r);
|
|
}
|
|
DBA::close($r);
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns the next jobs that should be executed
|
|
* @param int $limit
|
|
* @return array array with next jobs
|
|
* @throws \Exception
|
|
*/
|
|
private static function nextProcess(int $limit)
|
|
{
|
|
$priority = self::nextPriority();
|
|
if (empty($priority)) {
|
|
Logger::info('No tasks found');
|
|
return [];
|
|
}
|
|
|
|
$ids = [];
|
|
$stamp = (float)microtime(true);
|
|
$condition = ["`priority` = ? AND `pid` = 0 AND NOT `done` AND `next_try` < ?", $priority, DateTimeFormat::utcNow()];
|
|
$tasks = DBA::select('workerqueue', ['id', 'command', 'parameter'], $condition, ['limit' => $limit, 'order' => ['retrial', 'created']]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
while ($task = DBA::fetch($tasks)) {
|
|
$ids[] = $task['id'];
|
|
// Only continue that loop while we are storing commands that can be processed quickly
|
|
if (!empty($task['command'])) {
|
|
$command = $task['command'];
|
|
} else {
|
|
$command = json_decode($task['parameter'])[0];
|
|
}
|
|
|
|
if (!in_array($command, self::FAST_COMMANDS)) {
|
|
break;
|
|
}
|
|
}
|
|
DBA::close($tasks);
|
|
|
|
Logger::info('Found:', ['priority' => $priority, 'id' => $ids]);
|
|
return $ids;
|
|
}
|
|
|
|
/**
|
|
* Returns the priority of the next workerqueue job
|
|
*
|
|
* @return string priority
|
|
* @throws \Exception
|
|
*/
|
|
private static function nextPriority()
|
|
{
|
|
$waiting = [];
|
|
$priorities = [PRIORITY_CRITICAL, PRIORITY_HIGH, PRIORITY_MEDIUM, PRIORITY_LOW, PRIORITY_NEGLIGIBLE];
|
|
foreach ($priorities as $priority) {
|
|
$stamp = (float)microtime(true);
|
|
if (DBA::exists('workerqueue', ["`priority` = ? AND `pid` = 0 AND NOT `done` AND `next_try` < ?", $priority, DateTimeFormat::utcNow()])) {
|
|
$waiting[$priority] = true;
|
|
}
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
}
|
|
|
|
if (!empty($waiting[PRIORITY_CRITICAL])) {
|
|
return PRIORITY_CRITICAL;
|
|
}
|
|
|
|
$running = [];
|
|
$running_total = 0;
|
|
$stamp = (float)microtime(true);
|
|
$processes = DBA::p("SELECT COUNT(DISTINCT(`pid`)) AS `running`, `priority` FROM `workerqueue-view` GROUP BY `priority`");
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
while ($process = DBA::fetch($processes)) {
|
|
$running[$process['priority']] = $process['running'];
|
|
$running_total += $process['running'];
|
|
}
|
|
DBA::close($processes);
|
|
|
|
foreach ($priorities as $priority) {
|
|
if (!empty($waiting[$priority]) && empty($running[$priority])) {
|
|
Logger::info('No running worker found with priority {priority} - assigning it.', ['priority' => $priority]);
|
|
return $priority;
|
|
}
|
|
}
|
|
|
|
$active = max(self::activeWorkers(), $running_total);
|
|
$priorities = max(count($waiting), count($running));
|
|
$exponent = 2;
|
|
|
|
$total = 0;
|
|
for ($i = 1; $i <= $priorities; ++$i) {
|
|
$total += pow($i, $exponent);
|
|
}
|
|
|
|
$limit = [];
|
|
for ($i = 1; $i <= $priorities; ++$i) {
|
|
$limit[$priorities - $i] = max(1, round($active * (pow($i, $exponent) / $total)));
|
|
}
|
|
|
|
$i = 0;
|
|
foreach ($running as $priority => $workers) {
|
|
if ($workers < $limit[$i++]) {
|
|
Logger::info('Priority {priority} has got {workers} workers out of a limit of {limit}', ['priority' => $priority, 'workers' => $workers, 'limit' => $limit[$i - 1]]);
|
|
return $priority;
|
|
}
|
|
}
|
|
|
|
if (!empty($waiting)) {
|
|
$priority = array_keys($waiting)[0];
|
|
Logger::info('No underassigned priority found, now taking the highest priority.', ['priority' => $priority]);
|
|
return $priority;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Find and claim the next worker process for us
|
|
*
|
|
* @return boolean Have we found something?
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function findWorkerProcesses()
|
|
{
|
|
$fetch_limit = DI::config()->get('system', 'worker_fetch_limit', 1);
|
|
|
|
if (DI::config()->get('system', 'worker_multiple_fetch')) {
|
|
$pids = [];
|
|
foreach (self::getWorkerPIDList() as $pid => $count) {
|
|
if ($count <= $fetch_limit) {
|
|
$pids[] = $pid;
|
|
}
|
|
}
|
|
if (empty($pids)) {
|
|
return;
|
|
}
|
|
$limit = $fetch_limit * count($pids);
|
|
} else {
|
|
$pids = [getmypid()];
|
|
$limit = $fetch_limit;
|
|
}
|
|
|
|
$ids = self::nextProcess($limit);
|
|
$limit -= count($ids);
|
|
|
|
// If there is not enough results we check without priority limit
|
|
if ($limit > 0) {
|
|
$stamp = (float)microtime(true);
|
|
$condition = ["`pid` = 0 AND NOT `done` AND `next_try` < ?", DateTimeFormat::utcNow()];
|
|
$tasks = DBA::select('workerqueue', ['id', 'command', 'parameter'], $condition, ['limit' => $limit, 'order' => ['priority', 'retrial', 'created']]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
|
|
while ($task = DBA::fetch($tasks)) {
|
|
$ids[] = $task['id'];
|
|
// Only continue that loop while we are storing commands that can be processed quickly
|
|
if (!empty($task['command'])) {
|
|
$command = $task['command'];
|
|
} else {
|
|
$command = json_decode($task['parameter'])[0];
|
|
}
|
|
if (!in_array($command, self::FAST_COMMANDS)) {
|
|
break;
|
|
}
|
|
}
|
|
DBA::close($tasks);
|
|
}
|
|
|
|
if (empty($ids)) {
|
|
return;
|
|
}
|
|
|
|
// Assign the task ids to the workers
|
|
$worker = [];
|
|
foreach (array_unique($ids) as $id) {
|
|
$pid = next($pids);
|
|
if (!$pid) {
|
|
$pid = reset($pids);
|
|
}
|
|
$worker[$pid][] = $id;
|
|
}
|
|
|
|
$stamp = (float)microtime(true);
|
|
foreach ($worker as $worker_pid => $worker_ids) {
|
|
Logger::info('Set queue entry', ['pid' => $worker_pid, 'ids' => $worker_ids]);
|
|
DBA::update('workerqueue', ['executed' => DateTimeFormat::utcNow(), 'pid' => $worker_pid],
|
|
['id' => $worker_ids, 'done' => false, 'pid' => 0]);
|
|
}
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_write += (microtime(true) - $stamp);
|
|
}
|
|
|
|
/**
|
|
* Returns the next worker process
|
|
*
|
|
* @return array worker processes
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
public static function workerProcess()
|
|
{
|
|
// There can already be jobs for us in the queue.
|
|
$waiting = self::getWaitingJobForPID();
|
|
if (!empty($waiting)) {
|
|
return $waiting;
|
|
}
|
|
|
|
$stamp = (float)microtime(true);
|
|
if (!DI::lock()->acquire(self::LOCK_PROCESS)) {
|
|
return false;
|
|
}
|
|
self::$lock_duration += (microtime(true) - $stamp);
|
|
|
|
self::findWorkerProcesses();
|
|
|
|
DI::lock()->release(self::LOCK_PROCESS);
|
|
|
|
return self::getWaitingJobForPID();
|
|
}
|
|
|
|
/**
|
|
* Removes a workerqueue entry from the current process
|
|
*
|
|
* @param Process $process the process behind the workerqueue
|
|
*
|
|
* @return void
|
|
* @throws \Exception
|
|
*/
|
|
public static function unclaimProcess(Process $process)
|
|
{
|
|
$stamp = (float)microtime(true);
|
|
DBA::update('workerqueue', ['executed' => DBA::NULL_DATETIME, 'pid' => 0], ['pid' => $process->pid, 'done' => false]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_write += (microtime(true) - $stamp);
|
|
}
|
|
|
|
/**
|
|
* Runs the cron processes
|
|
*
|
|
* @return void
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function runCron()
|
|
{
|
|
Logger::info('Add cron entries');
|
|
|
|
// Check for spooled items
|
|
self::add(['priority' => PRIORITY_HIGH, 'force_priority' => true], 'SpoolPost');
|
|
|
|
// Run the cron job that calls all other jobs
|
|
self::add(['priority' => PRIORITY_MEDIUM, 'force_priority' => true], 'Cron');
|
|
|
|
// Cleaning dead processes
|
|
self::killStaleWorkers();
|
|
}
|
|
|
|
/**
|
|
* Fork a child process
|
|
*
|
|
* @param boolean $do_cron
|
|
* @return void
|
|
*/
|
|
private static function forkProcess(bool $do_cron)
|
|
{
|
|
if (DI::system()->isMinMemoryReached()) {
|
|
Logger::warning('Memory limit reached - quitting');
|
|
return;
|
|
}
|
|
|
|
// Children inherit their parent's database connection.
|
|
// To avoid problems we disconnect and connect both parent and child
|
|
DBA::disconnect();
|
|
$pid = pcntl_fork();
|
|
if ($pid == -1) {
|
|
DBA::connect();
|
|
Logger::warning('Could not spawn worker');
|
|
return;
|
|
} elseif ($pid) {
|
|
// The parent process continues here
|
|
DBA::connect();
|
|
|
|
self::IPCSetJobState(true, $pid);
|
|
Logger::info('Spawned new worker', ['pid' => $pid]);
|
|
|
|
$cycles = 0;
|
|
while (self::IPCJobsExists($pid) && (++$cycles < 100)) {
|
|
usleep(10000);
|
|
}
|
|
|
|
Logger::info('Spawned worker is ready', ['pid' => $pid, 'wait_cycles' => $cycles]);
|
|
return;
|
|
}
|
|
|
|
// We now are in the new worker
|
|
DBA::connect();
|
|
|
|
DI::flushLogger();
|
|
$process = DI::process()->create(getmypid(), basename(__FILE__));
|
|
|
|
$cycles = 0;
|
|
while (!self::IPCJobsExists($process->pid) && (++$cycles < 100)) {
|
|
usleep(10000);
|
|
}
|
|
|
|
Logger::info('Worker spawned', ['pid' => $process->pid, 'wait_cycles' => $cycles]);
|
|
|
|
self::processQueue($do_cron, $process);
|
|
|
|
self::unclaimProcess($process);
|
|
|
|
self::IPCSetJobState(false, $process->pid);
|
|
DI::process()->delete($process);
|
|
Logger::info('Worker ended', ['pid' => $process->pid]);
|
|
exit();
|
|
}
|
|
|
|
/**
|
|
* Spawns a new worker
|
|
*
|
|
* @param bool $do_cron
|
|
* @return void
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
public static function spawnWorker($do_cron = false)
|
|
{
|
|
if (self::isDaemonMode() && DI::config()->get('system', 'worker_fork')) {
|
|
self::forkProcess($do_cron);
|
|
} else {
|
|
DI::system()->run('bin/worker.php', ['no_cron' => !$do_cron]);
|
|
}
|
|
if (self::isDaemonMode()) {
|
|
self::IPCSetJobState(false);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds tasks to the worker queue
|
|
*
|
|
* @param (integer|array) priority or parameter array, strings are deprecated and are ignored
|
|
*
|
|
* next args are passed as $cmd command line
|
|
* or: Worker::add(PRIORITY_HIGH, "Notifier", Delivery::DELETION, $drop_id);
|
|
* or: Worker::add(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), "Delivery", $post_id);
|
|
*
|
|
* @return int "0" if worker queue entry already existed or there had been an error, otherwise the ID of the worker task
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @note $cmd and string args are surrounded with ""
|
|
*
|
|
* @hooks 'proc_run'
|
|
* array $arr
|
|
*
|
|
*/
|
|
public static function add(...$args)
|
|
{
|
|
if (!count($args)) {
|
|
return 0;
|
|
}
|
|
|
|
$arr = ['args' => $args, 'run_cmd' => true];
|
|
|
|
Hook::callAll("proc_run", $arr);
|
|
if (!$arr['run_cmd'] || !count($args)) {
|
|
return 1;
|
|
}
|
|
|
|
$priority = PRIORITY_MEDIUM;
|
|
// Don't fork from frontend tasks by default
|
|
$dont_fork = DI::config()->get("system", "worker_dont_fork", false) || !DI::mode()->isBackend();
|
|
$created = DateTimeFormat::utcNow();
|
|
$delayed = DBA::NULL_DATETIME;
|
|
$force_priority = false;
|
|
|
|
$run_parameter = array_shift($args);
|
|
|
|
if (is_int($run_parameter)) {
|
|
$priority = $run_parameter;
|
|
} elseif (is_array($run_parameter)) {
|
|
if (isset($run_parameter['delayed'])) {
|
|
$delayed = $run_parameter['delayed'];
|
|
}
|
|
if (isset($run_parameter['priority'])) {
|
|
$priority = $run_parameter['priority'];
|
|
}
|
|
if (isset($run_parameter['created'])) {
|
|
$created = $run_parameter['created'];
|
|
}
|
|
if (isset($run_parameter['dont_fork'])) {
|
|
$dont_fork = $run_parameter['dont_fork'];
|
|
}
|
|
if (isset($run_parameter['force_priority'])) {
|
|
$force_priority = $run_parameter['force_priority'];
|
|
}
|
|
} else {
|
|
throw new \InvalidArgumentException('Priority number or task parameter array expected as first argument');
|
|
}
|
|
|
|
$command = array_shift($args);
|
|
$parameters = json_encode($args);
|
|
$found = DBA::exists('workerqueue', ['command' => $command, 'parameter' => $parameters, 'done' => false]);
|
|
$added = 0;
|
|
|
|
if (!in_array($priority, PRIORITIES)) {
|
|
Logger::warning('Invalid priority', ['priority' => $priority, 'command' => $command, 'callstack' => System::callstack(20)]);
|
|
$priority = PRIORITY_MEDIUM;
|
|
}
|
|
|
|
// Quit if there was a database error - a precaution for the update process to 3.5.3
|
|
if (DBA::errorNo() != 0) {
|
|
return 0;
|
|
}
|
|
|
|
if (!$found) {
|
|
if (!DBA::insert('workerqueue', ['command' => $command, 'parameter' => $parameters, 'created' => $created,
|
|
'priority' => $priority, 'next_try' => $delayed])) {
|
|
return 0;
|
|
}
|
|
$added = DBA::lastInsertId();
|
|
} elseif ($force_priority) {
|
|
DBA::update('workerqueue', ['priority' => $priority], ['command' => $command, 'parameter' => $parameters, 'done' => false, 'pid' => 0]);
|
|
}
|
|
|
|
// Set the IPC flag to ensure an immediate process execution via daemon
|
|
if (self::isDaemonMode()) {
|
|
self::IPCSetJobState(true);
|
|
}
|
|
|
|
self::checkDaemonState();
|
|
|
|
// Should we quit and wait for the worker to be called as a cronjob?
|
|
if ($dont_fork) {
|
|
return $added;
|
|
}
|
|
|
|
// If there is a lock then we don't have to check for too much worker
|
|
if (!DI::lock()->acquire(self::LOCK_WORKER, 0)) {
|
|
return $added;
|
|
}
|
|
|
|
// If there are already enough workers running, don't fork another one
|
|
$quit = self::tooMuchWorkers();
|
|
DI::lock()->release(self::LOCK_WORKER);
|
|
|
|
if ($quit) {
|
|
return $added;
|
|
}
|
|
|
|
// Quit on daemon mode
|
|
if (self::isDaemonMode()) {
|
|
return $added;
|
|
}
|
|
|
|
// Now call the worker to execute the jobs that we just added to the queue
|
|
self::spawnWorker();
|
|
|
|
return $added;
|
|
}
|
|
|
|
public static function countWorkersByCommand(string $command)
|
|
{
|
|
return DBA::count('workerqueue', ['done' => false, 'pid' => 0, 'command' => $command]);
|
|
}
|
|
|
|
/**
|
|
* Returns the next retrial level for worker jobs.
|
|
* This function will skip levels when jobs are older.
|
|
*
|
|
* @param array $queue Worker queue entry
|
|
* @param integer $max_level maximum retrial level
|
|
* @return integer the next retrial level value
|
|
*/
|
|
private static function getNextRetrial($queue, $max_level)
|
|
{
|
|
$created = strtotime($queue['created']);
|
|
$retrial_time = time() - $created;
|
|
|
|
$new_retrial = $queue['retrial'] + 1;
|
|
$total = 0;
|
|
for ($retrial = 0; $retrial <= $max_level + 1; ++$retrial) {
|
|
$delay = (($retrial + 3) ** 4) + (rand(1, 30) * ($retrial + 1));
|
|
$total += $delay;
|
|
if (($total < $retrial_time) && ($retrial > $queue['retrial'])) {
|
|
$new_retrial = $retrial;
|
|
}
|
|
}
|
|
Logger::notice('New retrial for task', ['id' => $queue['id'], 'created' => $queue['created'], 'old' => $queue['retrial'], 'new' => $new_retrial]);
|
|
return $new_retrial;
|
|
}
|
|
|
|
/**
|
|
* Defers the current worker entry
|
|
*
|
|
* @return boolean had the entry been deferred?
|
|
* @throws \Exception
|
|
*/
|
|
public static function defer(): bool
|
|
{
|
|
$queue = DI::app()->getQueue();
|
|
|
|
if (empty($queue)) {
|
|
return false;
|
|
}
|
|
|
|
$id = $queue['id'];
|
|
$priority = $queue['priority'];
|
|
|
|
$max_level = DI::config()->get('system', 'worker_defer_limit');
|
|
|
|
$new_retrial = self::getNextRetrial($queue, $max_level);
|
|
|
|
if ($new_retrial > $max_level) {
|
|
Logger::notice('The task exceeded the maximum retry count', ['id' => $id, 'created' => $queue['created'], 'old_prio' => $queue['priority'], 'old_retrial' => $queue['retrial'], 'max_level' => $max_level, 'retrial' => $new_retrial]);
|
|
return false;
|
|
}
|
|
|
|
// Calculate the delay until the next trial
|
|
$delay = (($new_retrial + 2) ** 4) + (rand(1, 30) * ($new_retrial));
|
|
$next = DateTimeFormat::utc('now + ' . $delay . ' seconds');
|
|
|
|
if (($priority < PRIORITY_MEDIUM) && ($new_retrial > 3)) {
|
|
$priority = PRIORITY_MEDIUM;
|
|
} elseif (($priority < PRIORITY_LOW) && ($new_retrial > 6)) {
|
|
$priority = PRIORITY_LOW;
|
|
} elseif (($priority < PRIORITY_NEGLIGIBLE) && ($new_retrial > 8)) {
|
|
$priority = PRIORITY_NEGLIGIBLE;
|
|
}
|
|
|
|
Logger::info('Deferred task', ['id' => $id, 'retrial' => $new_retrial, 'created' => $queue['created'], 'next_execution' => $next, 'old_prio' => $queue['priority'], 'new_prio' => $priority]);
|
|
|
|
$stamp = (float)microtime(true);
|
|
$fields = ['retrial' => $new_retrial, 'next_try' => $next, 'executed' => DBA::NULL_DATETIME, 'pid' => 0, 'priority' => $priority];
|
|
DBA::update('workerqueue', $fields, ['id' => $id]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_write += (microtime(true) - $stamp);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Set the flag if some job is waiting
|
|
*
|
|
* @param boolean $jobs Is there a waiting job?
|
|
* @param int $key Key number
|
|
* @throws \Exception
|
|
*/
|
|
public static function IPCSetJobState(bool $jobs, int $key = 0)
|
|
{
|
|
$stamp = (float)microtime(true);
|
|
DBA::replace('worker-ipc', ['jobs' => $jobs, 'key' => $key]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_write += (microtime(true) - $stamp);
|
|
}
|
|
|
|
/**
|
|
* Delete a key entry
|
|
*
|
|
* @param int $key Key number
|
|
* @throws \Exception
|
|
*/
|
|
public static function IPCDeleteJobState(int $key)
|
|
{
|
|
$stamp = (float)microtime(true);
|
|
DBA::delete('worker-ipc', ['key' => $key]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
self::$db_duration_write += (microtime(true) - $stamp);
|
|
}
|
|
|
|
/**
|
|
* Checks if some worker job waits to be executed
|
|
*
|
|
* @param int $key Key number
|
|
* @return bool
|
|
* @throws \Exception
|
|
*/
|
|
public static function IPCJobsExists(int $key = 0)
|
|
{
|
|
$stamp = (float)microtime(true);
|
|
$row = DBA::selectFirst('worker-ipc', ['jobs'], ['key' => $key]);
|
|
self::$db_duration += (microtime(true) - $stamp);
|
|
|
|
// When we don't have a row, no job is running
|
|
if (!DBA::isResult($row)) {
|
|
return false;
|
|
}
|
|
|
|
return (bool)$row['jobs'];
|
|
}
|
|
|
|
/**
|
|
* Checks if the worker is running in the daemon mode.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public static function isDaemonMode()
|
|
{
|
|
if (!is_null(self::$daemon_mode)) {
|
|
return self::$daemon_mode;
|
|
}
|
|
|
|
if (DI::mode()->getExecutor() == Mode::DAEMON) {
|
|
return true;
|
|
}
|
|
|
|
$daemon_mode = DI::config()->get('system', 'worker_daemon_mode', false, true);
|
|
if ($daemon_mode) {
|
|
return $daemon_mode;
|
|
}
|
|
|
|
if (!function_exists('pcntl_fork')) {
|
|
self::$daemon_mode = false;
|
|
return false;
|
|
}
|
|
|
|
$pidfile = DI::config()->get('system', 'pidfile');
|
|
if (empty($pidfile)) {
|
|
// No pid file, no daemon
|
|
self::$daemon_mode = false;
|
|
return false;
|
|
}
|
|
|
|
if (!is_readable($pidfile)) {
|
|
// No pid file. We assume that the daemon had been intentionally stopped.
|
|
self::$daemon_mode = false;
|
|
return false;
|
|
}
|
|
|
|
$pid = intval(file_get_contents($pidfile));
|
|
$running = posix_kill($pid, 0);
|
|
|
|
self::$daemon_mode = $running;
|
|
return $running;
|
|
}
|
|
|
|
/**
|
|
* Test if the daemon is running. If not, it will be started
|
|
*
|
|
* @return void
|
|
*/
|
|
private static function checkDaemonState()
|
|
{
|
|
if (!DI::config()->get('system', 'daemon_watchdog', false)) {
|
|
return;
|
|
}
|
|
|
|
if (!DI::mode()->isNormal()) {
|
|
return;
|
|
}
|
|
|
|
// Check every minute if the daemon is running
|
|
if (DI::config()->get('system', 'last_daemon_check', 0) + 60 > time()) {
|
|
return;
|
|
}
|
|
|
|
DI::config()->set('system', 'last_daemon_check', time());
|
|
|
|
$pidfile = DI::config()->get('system', 'pidfile');
|
|
if (empty($pidfile)) {
|
|
// No pid file, no daemon
|
|
return;
|
|
}
|
|
|
|
if (!is_readable($pidfile)) {
|
|
// No pid file. We assume that the daemon had been intentionally stopped.
|
|
return;
|
|
}
|
|
|
|
$pid = intval(file_get_contents($pidfile));
|
|
if (posix_kill($pid, 0)) {
|
|
Logger::info('Daemon process is running', ['pid' => $pid]);
|
|
return;
|
|
}
|
|
|
|
Logger::warning('Daemon process is not running', ['pid' => $pid]);
|
|
|
|
self::spawnDaemon();
|
|
}
|
|
|
|
/**
|
|
* Spawn a new daemon process
|
|
*
|
|
* @return void
|
|
*/
|
|
private static function spawnDaemon()
|
|
{
|
|
Logger::notice('Starting new daemon process');
|
|
$command = 'bin/daemon.php';
|
|
$a = DI::app();
|
|
DI::system()->run($command, ['start']);
|
|
Logger::notice('New daemon process started');
|
|
}
|
|
|
|
/**
|
|
* Check if the system is inside the defined maintenance window
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public static function isInMaintenanceWindow(bool $check_last_execution = false)
|
|
{
|
|
// Calculate the seconds of the start end end of the maintenance window
|
|
$start = strtotime(DI::config()->get('system', 'maintenance_start')) % 86400;
|
|
$end = strtotime(DI::config()->get('system', 'maintenance_end')) % 86400;
|
|
|
|
Logger::info('Maintenance window', ['start' => date('H:i:s', $start), 'end' => date('H:i:s', $end)]);
|
|
|
|
if ($check_last_execution) {
|
|
// Calculate the window duration
|
|
$duration = max($start, $end) - min($start, $end);
|
|
|
|
// Quit when the last cron execution had been after the previous window
|
|
$last_cron = DI::config()->get('system', 'last_cron_daily');
|
|
if ($last_cron + $duration > time()) {
|
|
Logger::info('The Daily cron had been executed recently', ['last' => date(DateTimeFormat::MYSQL, $last_cron), 'start' => date('H:i:s', $start), 'end' => date('H:i:s', $end)]);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$current = time() % 86400;
|
|
|
|
if ($start < $end) {
|
|
// Execute if we are inside the window
|
|
$execute = ($current >= $start) && ($current <= $end);
|
|
} else {
|
|
// Don't execute if we are outside the window
|
|
$execute = !(($current > $end) && ($current < $start));
|
|
}
|
|
|
|
if ($execute) {
|
|
Logger::info('We are inside the maintenance window', ['current' => date('H:i:s', $current), 'start' => date('H:i:s', $start), 'end' => date('H:i:s', $end)]);
|
|
} else {
|
|
Logger::info('We are outside the maintenance window', ['current' => date('H:i:s', $current), 'start' => date('H:i:s', $start), 'end' => date('H:i:s', $end)]);
|
|
}
|
|
|
|
return $execute;
|
|
}
|
|
}
|