chdir($directory);
}
-require_once("boot.php");
+use \Friendica\Core\Config;
+use \Friendica\Core\PConfig;
+require_once("boot.php");
-function poller_run(&$argv, &$argc){
+function poller_run($argv, $argc){
global $a, $db;
if(is_null($a)) {
}
if(is_null($db)) {
- @include(".htconfig.php");
- require_once("include/dba.php");
- $db = new dba($db_host, $db_user, $db_pass, $db_data);
- unset($db_host, $db_user, $db_pass, $db_data);
- };
-
-
- require_once('include/session.php');
- require_once('include/datetime.php');
- require_once('library/simplepie/simplepie.inc');
- require_once('include/items.php');
- require_once('include/Contact.php');
- require_once('include/email.php');
- require_once('include/socgraph.php');
- require_once('include/pidfile.php');
-
- load_config('config');
- load_config('system');
-
- $maxsysload = intval(get_config('system','maxloadavg'));
- if($maxsysload < 1)
- $maxsysload = 50;
- if(function_exists('sys_getloadavg')) {
- $load = sys_getloadavg();
- if(intval($load[0]) > $maxsysload) {
- logger('system: load ' . $load[0] . ' too high. Poller deferred to next scheduled run.');
- return;
- }
+ @include(".htconfig.php");
+ require_once("include/dba.php");
+ $db = new dba($db_host, $db_user, $db_pass, $db_data);
+ unset($db_host, $db_user, $db_pass, $db_data);
+ };
+
+ // Quit when in maintenance
+ if (Config::get('system', 'maintenance', true)) {
+ return;
}
- $lockpath = get_lockpath();
- if ($lockpath != '') {
- $pidfile = new pidfile($lockpath, 'poller');
- if($pidfile->is_already_running()) {
- logger("poller: Already running");
- if ($pidfile->running_time() > 9*60) {
- $pidfile->kill();
- logger("poller: killed stale process");
- // Calling a new instance
- proc_run('php','include/poller.php');
- }
- exit;
- }
+ $a->start_process();
+
+ if (poller_max_connections_reached()) {
+ return;
}
+ if ($a->maxload_reached()) {
+ return;
+ }
+ if(($argc <= 1) OR ($argv[1] != "no_cron")) {
+ poller_run_cron();
+ }
- $a->set_baseurl(get_config('system','url'));
+ if ($a->max_processes_reached()) {
+ return;
+ }
- load_hooks();
+ // Checking the number of workers
+ if (poller_too_much_workers()) {
+ poller_kill_stale_workers();
+ return;
+ }
- logger('poller: start');
+ $starttime = time();
- // run queue delivery process in the background
+ while ($r = poller_worker_process()) {
- proc_run('php',"include/queue.php");
+ // Count active workers and compare them with a maximum value that depends on the load
+ if (poller_too_much_workers()) {
+ return;
+ }
- // run diaspora photo queue process in the background
+ if (!poller_execute($r[0])) {
+ return;
+ }
+
+ // Quit the poller once every hour
+ if (time() > ($starttime + 3600))
+ return;
+ }
- proc_run('php',"include/dsprphotoq.php");
+}
- // expire any expired accounts
+/**
+ * @brief Execute a worker entry
+ *
+ * @param array $queue Workerqueue entry
+ *
+ * @return boolean "true" if further processing should be stopped
+ */
+function poller_execute($queue) {
- q("UPDATE user SET `account_expired` = 1 where `account_expired` = 0
- AND `account_expires_on` != '0000-00-00 00:00:00'
- AND `account_expires_on` < UTC_TIMESTAMP() ");
+ $a = get_app();
- // delete user and contact records for recently removed accounts
+ $mypid = getmypid();
- $r = q("SELECT * FROM `user` WHERE `account_removed` = 1 AND `account_expires_on` < UTC_TIMESTAMP() - INTERVAL 3 DAY");
- if ($r) {
- foreach($r as $user) {
- q("DELETE FROM `contact` WHERE `uid` = %d", intval($user['uid']));
- q("DELETE FROM `user` WHERE `uid` = %d", intval($user['uid']));
- }
+ // Quit when in maintenance
+ if (Config::get('system', 'maintenance', true)) {
+ return false;
}
- $abandon_days = intval(get_config('system','account_abandon_days'));
- if($abandon_days < 1)
- $abandon_days = 0;
+ // Constantly check the number of parallel database processes
+ if ($a->max_processes_reached()) {
+ return false;
+ }
- // Check OStatus conversations
- // Check only conversations with mentions (for a longer time)
- check_conversations(true);
+ // Constantly check the number of available database connections to let the frontend be accessible at any time
+ if (poller_max_connections_reached()) {
+ return false;
+ }
- // Check every conversation
- check_conversations(false);
+ $upd = q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = %d WHERE `id` = %d AND `pid` = 0",
+ dbesc(datetime_convert()),
+ intval($mypid),
+ intval($queue["id"]));
- // To-Do: Regenerate usage statistics
- // q("ANALYZE TABLE `item`");
+ if (!$upd) {
+ logger("Couldn't update queue entry ".$queue["id"]." - skip this execution", LOGGER_DEBUG);
+ q("COMMIT");
+ return true;
+ }
- // once daily run birthday_updates and then expire in background
+ // Assure that there are no tasks executed twice
+ $id = q("SELECT `pid`, `executed` FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
+ if (!$id) {
+ logger("Queue item ".$queue["id"]." vanished - skip this execution", LOGGER_DEBUG);
+ q("COMMIT");
+ return true;
+ } elseif ((strtotime($id[0]["executed"]) <= 0) OR ($id[0]["pid"] == 0)) {
+ logger("Entry for queue item ".$queue["id"]." wasn't stored - skip this execution", LOGGER_DEBUG);
+ q("COMMIT");
+ return true;
+ } elseif ($id[0]["pid"] != $mypid) {
+ logger("Queue item ".$queue["id"]." is to be executed by process ".$id[0]["pid"]." and not by me (".$mypid.") - skip this execution", LOGGER_DEBUG);
+ q("COMMIT");
+ return true;
+ }
+ q("COMMIT");
- $d1 = get_config('system','last_expire_day');
- $d2 = intval(datetime_convert('UTC','UTC','now','d'));
+ $argv = json_decode($queue["parameter"]);
- if($d2 != intval($d1)) {
+ // Check for existance and validity of the include file
+ $include = $argv[0];
- update_contact_birthdays();
+ if (!validate_include($include)) {
+ logger("Include file ".$argv[0]." is not valid!");
+ q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
+ return true;
+ }
- update_suggestions();
+ require_once($include);
- set_config('system','last_expire_day',$d2);
- proc_run('php','include/expire.php');
+ $funcname = str_replace(".php", "", basename($argv[0]))."_run";
+
+ if (function_exists($funcname)) {
+
+ poller_exec_function($queue, $funcname, $argv);
+
+ q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
+ } else {
+ logger("Function ".$funcname." does not exist");
}
- $last = get_config('system','cache_last_cleared');
+ return true;
+}
- if($last) {
- $next = $last + (3600); // Once per hour
- $clear_cache = ($next <= time());
- } else
- $clear_cache = true;
+/**
+ * @brief Execute a function from the queue
+ *
+ * @param array $queue Workerqueue entry
+ * @param string $funcname name of the function
+ * @param array $argv Array of values to be passed to the function
+ */
+function poller_exec_function($queue, $funcname, $argv) {
+
+ $a = get_app();
+
+ $mypid = getmypid();
+
+ $argc = count($argv);
+
+ logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." ".$queue["parameter"]);
+
+ $stamp = (float)microtime(true);
+
+ // We use the callstack here to analyze the performance of executed worker entries.
+ // For this reason the variables have to be initialized.
+ if (Config::get("system", "profiler")) {
+ $a->performance["start"] = microtime(true);
+ $a->performance["database"] = 0;
+ $a->performance["database_write"] = 0;
+ $a->performance["network"] = 0;
+ $a->performance["file"] = 0;
+ $a->performance["rendering"] = 0;
+ $a->performance["parser"] = 0;
+ $a->performance["marktime"] = 0;
+ $a->performance["markstart"] = microtime(true);
+ $a->callstack = array();
+ }
- if ($clear_cache) {
- // clear old cache
- Cache::clear();
+ // For better logging create a new process id for every worker call
+ // But preserve the old one for the worker
+ $old_process_id = $a->process_id;
+ $a->process_id = uniqid("wrk", true);
- // clear old item cache files
- clear_cache();
+ $funcname($argv, $argc);
- // clear cache for photos
- clear_cache($a->get_basepath(), $a->get_basepath()."/photo");
+ $a->process_id = $old_process_id;
- // clear smarty cache
- clear_cache($a->get_basepath()."/view/smarty3/compiled", $a->get_basepath()."/view/smarty3/compiled");
+ $duration = number_format(microtime(true) - $stamp, 3);
- // clear cache for image proxy
- if (!get_config("system", "proxy_disabled")) {
- clear_cache($a->get_basepath(), $a->get_basepath()."/proxy");
+ logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - done in ".$duration." seconds.");
- $cachetime = get_config('system','proxy_cache_time');
- if (!$cachetime) $cachetime = PROXY_DEFAULT_TIME;
+ // Write down the performance values into the log
+ if (Config::get("system", "profiler")) {
+ $duration = microtime(true)-$a->performance["start"];
- q('DELETE FROM `photo` WHERE `uid` = 0 AND `resource-id` LIKE "pic:%%" AND `created` < NOW() - INTERVAL %d SECOND', $cachetime);
+ if (Config::get("rendertime", "callstack")) {
+ if (isset($a->callstack["database"])) {
+ $o = "\nDatabase Read:\n";
+ foreach ($a->callstack["database"] AS $func => $time) {
+ $time = round($time, 3);
+ if ($time > 0)
+ $o .= $func.": ".$time."\n";
+ }
+ }
+ if (isset($a->callstack["database_write"])) {
+ $o .= "\nDatabase Write:\n";
+ foreach ($a->callstack["database_write"] AS $func => $time) {
+ $time = round($time, 3);
+ if ($time > 0)
+ $o .= $func.": ".$time."\n";
+ }
+ }
+ if (isset($a->callstack["network"])) {
+ $o .= "\nNetwork:\n";
+ foreach ($a->callstack["network"] AS $func => $time) {
+ $time = round($time, 3);
+ if ($time > 0)
+ $o .= $func.": ".$time."\n";
+ }
+ }
+ } else {
+ $o = '';
}
- set_config('system','cache_last_cleared', time());
+ logger("ID ".$queue["id"].": ".$funcname.": ".sprintf("DB: %s/%s, Net: %s, I/O: %s, Other: %s, Total: %s".$o,
+ number_format($a->performance["database"] - $a->performance["database_write"], 2),
+ number_format($a->performance["database_write"], 2),
+ number_format($a->performance["network"], 2),
+ number_format($a->performance["file"], 2),
+ number_format($duration - ($a->performance["database"] + $a->performance["network"] + $a->performance["file"]), 2),
+ number_format($duration, 2)),
+ LOGGER_DEBUG);
}
- $manual_id = 0;
- $generation = 0;
- $force = false;
- $restart = false;
+ $cooldown = Config::get("system", "worker_cooldown", 0);
- if(($argc > 1) && ($argv[1] == 'force'))
- $force = true;
+ if ($cooldown > 0) {
+ logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - in cooldown for ".$cooldown." seconds");
+ sleep($cooldown);
+ }
+}
- if(($argc > 1) && ($argv[1] == 'restart')) {
- $restart = true;
- $generation = intval($argv[2]);
- if(! $generation)
- killme();
+/**
+ * @brief Checks if the number of database connections has reached a critical limit.
+ *
+ * @return bool Are more than 3/4 of the maximum connections used?
+ */
+function poller_max_connections_reached() {
+
+ // Fetch the max value from the config. This is needed when the system cannot detect the correct value by itself.
+ $max = Config::get("system", "max_connections");
+
+ // Fetch the percentage level where the poller will get active
+ $maxlevel = Config::get("system", "max_connections_level", 75);
+
+ if ($max == 0) {
+ // the maximum number of possible user connections can be a system variable
+ $r = q("SHOW VARIABLES WHERE `variable_name` = 'max_user_connections'");
+ if ($r)
+ $max = $r[0]["Value"];
+
+ // Or it can be granted. This overrides the system variable
+ $r = q("SHOW GRANTS");
+ if ($r)
+ foreach ($r AS $grants) {
+ $grant = array_pop($grants);
+ if (stristr($grant, "GRANT USAGE ON"))
+ if (preg_match("/WITH MAX_USER_CONNECTIONS (\d*)/", $grant, $match))
+ $max = $match[1];
+ }
}
- if(($argc > 1) && intval($argv[1])) {
- $manual_id = intval($argv[1]);
- $force = true;
+ // 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) {
+ $r = q("SHOW PROCESSLIST");
+ if (!dbm::is_result($r))
+ return false;
+
+ $used = count($r);
+
+ logger("Connection usage (user values): ".$used."/".$max, LOGGER_DEBUG);
+
+ $level = ($used / $max) * 100;
+
+ if ($level >= $maxlevel) {
+ logger("Maximum level (".$maxlevel."%) of user connections reached: ".$used."/".$max);
+ return true;
+ }
}
- $interval = intval(get_config('system','poll_interval'));
- if(! $interval)
- $interval = ((get_config('system','delivery_interval') === false) ? 3 : intval(get_config('system','delivery_interval')));
+ // We will now check for the system values.
+ // This limit could be reached although the user limits are fine.
+ $r = q("SHOW VARIABLES WHERE `variable_name` = 'max_connections'");
+ if (!$r)
+ return false;
+
+ $max = intval($r[0]["Value"]);
+ if ($max == 0)
+ return false;
- $sql_extra = (($manual_id) ? " AND `id` = $manual_id " : "");
+ $r = q("SHOW STATUS WHERE `variable_name` = 'Threads_connected'");
+ if (!$r)
+ return false;
- reload_plugins();
+ $used = intval($r[0]["Value"]);
+ if ($used == 0)
+ return false;
- $d = datetime_convert();
+ logger("Connection usage (system values): ".$used."/".$max, LOGGER_DEBUG);
- if(! $restart)
- proc_run('php','include/cronhooks.php');
+ $level = $used / $max * 100;
- // Only poll from those with suitable relationships,
- // and which have a polling address and ignore Diaspora since
- // we are unable to match those posts with a Diaspora GUID and prevent duplicates.
+ if ($level < $maxlevel)
+ return false;
- $abandon_sql = (($abandon_days)
- ? sprintf(" AND `user`.`login_date` > UTC_TIMESTAMP() - INTERVAL %d DAY ", intval($abandon_days))
- : ''
- );
+ logger("Maximum level (".$level."%) of system connections reached: ".$used."/".$max);
+ return true;
+}
- $contacts = q("SELECT `contact`.`id` FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
- WHERE `rel` IN (%d, %d) AND `poll` != '' AND `network` IN ('%s', '%s', '%s', '%s', '%s', '%s')
- $sql_extra
- AND NOT `self` AND NOT `contact`.`blocked` AND NOT `contact`.`readonly` AND NOT `contact`.`archive`
- AND NOT `user`.`account_expired` AND NOT `user`.`account_removed` $abandon_sql ORDER BY RAND()",
- intval(CONTACT_IS_SHARING),
- intval(CONTACT_IS_FRIEND),
- dbesc(NETWORK_DFRN),
- dbesc(NETWORK_ZOT),
- dbesc(NETWORK_OSTATUS),
- dbesc(NETWORK_FEED),
- dbesc(NETWORK_MAIL),
- dbesc(NETWORK_MAIL2)
- );
+/**
+ * @brief fix the queue entry if the worker process died
+ *
+ */
+function poller_kill_stale_workers() {
+ $r = q("SELECT `pid`, `executed`, `priority`, `parameter` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
- if(! count($contacts)) {
+ if (!dbm::is_result($r)) {
+ // No processing here needed
return;
}
- foreach($contacts as $c) {
+ foreach($r AS $pid)
+ if (!posix_kill($pid["pid"], 0))
+ q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `pid` = 0 WHERE `pid` = %d",
+ intval($pid["pid"]));
+ else {
+ // Kill long running processes
+
+ // Check if the priority is in a valid range
+ if (!in_array($pid["priority"], array(PRIORITY_CRITICAL, PRIORITY_HIGH, PRIORITY_MEDIUM, PRIORITY_LOW, PRIORITY_NEGLIGIBLE)))
+ $pid["priority"] = PRIORITY_MEDIUM;
+
+ // Define the maximum durations
+ $max_duration_defaults = array(PRIORITY_CRITICAL => 360, PRIORITY_HIGH => 10, PRIORITY_MEDIUM => 60, PRIORITY_LOW => 180, PRIORITY_NEGLIGIBLE => 360);
+ $max_duration = $max_duration_defaults[$pid["priority"]];
+
+ $argv = json_decode($pid["parameter"]);
+ $argv[0] = basename($argv[0]);
+
+ // How long is the process already running?
+ $duration = (time() - strtotime($pid["executed"])) / 60;
+ if ($duration > $max_duration) {
+ logger("Worker process ".$pid["pid"]." (".implode(" ", $argv).") took more than ".$max_duration." minutes. It will be killed now.");
+ posix_kill($pid["pid"], SIGTERM);
+
+ // We killed the stale process.
+ // To avoid a blocking situation we reschedule the process at the beginning of the queue.
+ // Additionally we are lowering the priority.
+ q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `created` = '%s',
+ `priority` = %d, `pid` = 0 WHERE `pid` = %d",
+ dbesc(datetime_convert()),
+ intval(PRIORITY_NEGLIGIBLE),
+ intval($pid["pid"]));
+ } else
+ logger("Worker process ".$pid["pid"]." (".implode(" ", $argv).") now runs for ".round($duration)." of ".$max_duration." allowed minutes. That's okay.", LOGGER_DEBUG);
+ }
+}
+
+/**
+ * @brief Checks if the number of active workers exceeds the given limits
+ *
+ * @return bool Are there too much workers running?
+ */
+function poller_too_much_workers() {
+ $queues = Config::get("system", "worker_queues", 4);
+
+ $maxqueues = $queues;
- $res = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
- intval($c['id'])
- );
+ $active = poller_active_workers();
- if((! $res) || (! count($res)))
- continue;
+ // Decrease the number of workers at higher load
+ $load = current_load();
+ if($load) {
+ $maxsysload = intval(Config::get("system", "maxloadavg", 50));
- foreach($res as $contact) {
+ $maxworkers = $queues;
- $xml = false;
+ // Some magical mathemathics to reduce the workers
+ $exponent = 3;
+ $slope = $maxworkers / pow($maxsysload, $exponent);
+ $queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
- if($manual_id)
- $contact['last-update'] = '0000-00-00 00:00:00';
+ $s = q("SELECT COUNT(*) AS `total` FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00'");
+ $entries = $s[0]["total"];
- if(in_array($contact['network'], array(NETWORK_DFRN, NETWORK_ZOT, NETWORK_OSTATUS)))
- $contact['priority'] = 2;
+ if (Config::get("system", "worker_fastlane", false) AND ($queues > 0) AND ($entries > 0) AND ($active >= $queues)) {
+ $s = q("SELECT `priority` FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00' ORDER BY `priority` LIMIT 1");
+ $top_priority = $s[0]["priority"];
- if($contact['subhub'] AND in_array($contact['network'], array(NETWORK_DFRN, NETWORK_ZOT, NETWORK_OSTATUS))) {
- // We should be getting everything via a hub. But just to be sure, let's check once a day.
- // (You can make this more or less frequent if desired by setting 'pushpoll_frequency' appropriately)
- // This also lets us update our subscription to the hub, and add or replace hubs in case it
- // changed. We will only update hubs once a day, regardless of 'pushpoll_frequency'.
+ $s = q("SELECT `id` FROM `workerqueue` WHERE `priority` <= %d AND `executed` != '0000-00-00 00:00:00' LIMIT 1",
+ intval($top_priority));
+ $high_running = dbm::is_result($s);
- $poll_interval = get_config('system','pushpoll_frequency');
- $contact['priority'] = (($poll_interval !== false) ? intval($poll_interval) : 3);
+ if (!$high_running AND ($top_priority > PRIORITY_UNDEFINED) AND ($top_priority < PRIORITY_NEGLIGIBLE)) {
+ logger("There are jobs with priority ".$top_priority." waiting but none is executed. Open a fastlane.", LOGGER_DEBUG);
+ $queues = $active + 1;
}
+ }
- if($contact['priority'] AND !$force) {
-
- $update = false;
-
- $t = $contact['last-update'];
-
- /**
- * Based on $contact['priority'], should we poll this site now? Or later?
- */
-
- switch ($contact['priority']) {
- case 5:
- if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 month"))
- $update = true;
- break;
- case 4:
- if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 week"))
- $update = true;
- break;
- case 3:
- if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 day"))
- $update = true;
- break;
- case 2:
- if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 12 hour"))
- $update = true;
- break;
- case 1:
- default:
- if(datetime_convert('UTC','UTC', 'now') > datetime_convert('UTC','UTC', $t . " + 1 hour"))
- $update = true;
- break;
- }
- if(!$update)
- continue;
+ // Create a list of queue entries grouped by their priority
+ $running = array(PRIORITY_CRITICAL => 0,
+ PRIORITY_HIGH => 0,
+ PRIORITY_MEDIUM => 0,
+ PRIORITY_LOW => 0,
+ PRIORITY_NEGLIGIBLE => 0);
+
+ $r = q("SELECT COUNT(*) AS `running`, `priority` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` GROUP BY `priority`");
+ if (dbm::is_result($r))
+ foreach ($r AS $process)
+ $running[$process["priority"]] = $process["running"];
+
+ $processlist = "";
+ $r = q("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` GROUP BY `priority`");
+ if (dbm::is_result($r))
+ foreach ($r as $entry) {
+ if ($processlist != "")
+ $processlist .= ", ";
+ $processlist .= $entry["priority"].":".$running[$entry["priority"]]."/".$entry["entries"];
}
- logger("Polling ".$contact["network"]." ".$contact["id"]." ".$contact["nick"]." ".$contact["name"]);
+ logger("Load: ".$load."/".$maxsysload." - processes: ".$active."/".$entries." (".$processlist.") - maximum: ".$queues."/".$maxqueues, LOGGER_DEBUG);
- proc_run('php','include/onepoll.php',$contact['id']);
+ // Are there fewer workers running as possible? Then fork a new one.
+ if (!Config::get("system", "worker_dont_fork") AND ($queues > ($active + 1)) AND ($entries > 1)) {
+ logger("Active workers: ".$active."/".$queues." Fork a new worker.", LOGGER_DEBUG);
+ $args = array("php", "include/poller.php", "no_cron");
+ $a = get_app();
+ $a->proc_run($args);
+ }
+ }
+
+ return($active >= $queues);
+}
+
+/**
+ * @brief Returns the number of active poller processes
+ *
+ * @return integer Number of active poller processes
+ */
+function poller_active_workers() {
+ $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'poller.php'");
+
+ return($workers[0]["processes"]);
+}
+
+/**
+ * @brief Check if we should pass some slow processes
+ *
+ * When the active processes of the highest priority are using more than 2/3
+ * of all processes, we let pass slower processes.
+ *
+ * @param string $highest_priority Returns the currently highest priority
+ * @return bool We let pass a slower process than $highest_priority
+ */
+function poller_passing_slow(&$highest_priority) {
+
+ $highest_priority = 0;
+
+ $r = q("SELECT `priority`
+ FROM `process`
+ INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid`");
+
+ // No active processes at all? Fine
+ if (!dbm::is_result($r))
+ return(false);
+
+ $priorities = array();
+ foreach ($r AS $line)
+ $priorities[] = $line["priority"];
+
+ // Should not happen
+ if (count($priorities) == 0)
+ return(false);
+
+ $highest_priority = min($priorities);
+
+ // The highest process is already the slowest one?
+ // Then we quit
+ if ($highest_priority == PRIORITY_NEGLIGIBLE)
+ return(false);
+
+ $high = 0;
+ foreach ($priorities AS $priority)
+ if ($priority == $highest_priority)
+ ++$high;
+
+ logger("Highest priority: ".$highest_priority." Total processes: ".count($priorities)." Count high priority processes: ".$high, LOGGER_DEBUG);
+ $passing_slow = (($high/count($priorities)) > (2/3));
+
+ if ($passing_slow)
+ logger("Passing slower processes than priority ".$highest_priority, LOGGER_DEBUG);
+
+ return($passing_slow);
+}
+
+/**
+ * @brief Returns the next worker process
+ *
+ * @return string SQL statement
+ */
+function poller_worker_process() {
+
+ q("START TRANSACTION;");
+
+ // Check if we should pass some low priority process
+ $highest_priority = 0;
+
+ if (poller_passing_slow($highest_priority)) {
+ // Are there waiting processes with a higher priority than the currently highest?
+ $r = q("SELECT * FROM `workerqueue`
+ WHERE `executed` = '0000-00-00 00:00:00' AND `priority` < %d
+ ORDER BY `priority`, `created` LIMIT 1", dbesc($highest_priority));
+ if (dbm::is_result($r))
+ return $r;
+
+ // Give slower processes some processing time
+ $r = q("SELECT * FROM `workerqueue`
+ WHERE `executed` = '0000-00-00 00:00:00' AND `priority` > %d
+ ORDER BY `priority`, `created` LIMIT 1", dbesc($highest_priority));
+ }
+
+ // If there is no result (or we shouldn't pass lower processes) we check without priority limit
+ if (($highest_priority == 0) OR !dbm::is_result($r))
+ $r = q("SELECT * FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00' ORDER BY `priority`, `created` LIMIT 1");
+
+ return $r;
+}
+
+/**
+ * @brief Call the front end worker
+ */
+function call_worker() {
+ if (!Config::get("system", "frontend_worker") OR !Config::get("system", "worker")) {
+ return;
+ }
+
+ $url = App::get_baseurl()."/worker";
+ fetch_url($url, false, $redirects, 1);
+}
+
+/**
+ * @brief Call the front end worker if there aren't any active
+ */
+function call_worker_if_idle() {
+ if (!Config::get("system", "frontend_worker") OR !Config::get("system", "worker")) {
+ return;
+ }
+
+ // Do we have "proc_open"? Then we can fork the poller
+ if (function_exists("proc_open")) {
+ // When was the last time that we called the worker?
+ // Less than one minute? Then we quit
+ if ((time() - Config::get("system", "worker_started")) < 60) {
+ return;
+ }
- if($interval)
- @time_sleep_until(microtime(true) + (float) $interval);
+ set_config("system", "worker_started", time());
+
+ // Do we have enough running workers? Then we quit here.
+ if (poller_too_much_workers()) {
+ // Cleaning dead processes
+ poller_kill_stale_workers();
+ get_app()->remove_inactive_processes();
+
+ return;
}
+
+ poller_run_cron();
+
+ logger('Call poller', LOGGER_DEBUG);
+
+ $args = array("php", "include/poller.php", "no_cron");
+ $a = get_app();
+ $a->proc_run($args);
+ return;
}
- logger('poller: end');
+ // We cannot execute background processes.
+ // We now run the processes from the frontend.
+ // This won't work with long running processes.
+ poller_run_cron();
- return;
+ clear_worker_processes();
+
+ $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'worker.php'");
+
+ if ($workers[0]["processes"] == 0) {
+ call_worker();
+ }
+}
+
+/**
+ * @brief Removes long running worker processes
+ */
+function clear_worker_processes() {
+ $timeout = Config::get("system", "frontend_worker_timeout", 10);
+
+ /// @todo We should clean up the corresponding workerqueue entries as well
+ q("DELETE FROM `process` WHERE `created` < '%s' AND `command` = 'worker.php'",
+ dbesc(datetime_convert('UTC','UTC',"now - ".$timeout." minutes")));
+}
+
+/**
+ * @brief Runs the cron processes
+ */
+function poller_run_cron() {
+ logger('Add cron entries', LOGGER_DEBUG);
+
+ // Check for spooled items
+ proc_run(PRIORITY_HIGH, "include/spool_post.php");
+
+ // Run the cron job that calls all other jobs
+ proc_run(PRIORITY_MEDIUM, "include/cron.php");
+
+ // Run the cronhooks job separately from cron for being able to use a different timing
+ proc_run(PRIORITY_MEDIUM, "include/cronhooks.php");
+
+ // Cleaning dead processes
+ poller_kill_stale_workers();
}
if (array_search(__file__,get_included_files())===0){
- poller_run($_SERVER["argv"],$_SERVER["argc"]);
- killme();
+ poller_run($_SERVER["argv"],$_SERVER["argc"]);
+
+ get_app()->end_process();
+
+ killme();
}
+?>
projects / friendica.git / blobdiff