}
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)) {
unset($db_host, $db_user, $db_pass, $db_data);
};
- if ($a->max_processes_reached())
- return;
+ Config::load();
- if (poller_max_connections_reached())
+ // Quit when in maintenance
+ if (Config::get('system', 'maintenance', true)) {
return;
+ }
+
+ $a->set_baseurl(Config::get('system', 'url'));
- if (App::maxload_reached())
+ load_hooks();
+
+ $a->start_process();
+
+ if (poller_max_connections_reached()) {
return;
+ }
- // Checking the number of workers
- if (poller_too_much_workers()) {
- poller_kill_stale_workers();
+ if ($a->maxload_reached()) {
return;
}
if(($argc <= 1) OR ($argv[1] != "no_cron")) {
- // Run the cron job that calls all other jobs
- proc_run("php","include/cron.php");
+ poller_run_cron();
+ }
- // Run the cronhooks job separately from cron for being able to use a different timing
- proc_run("php","include/cronhooks.php");
+ if ($a->max_processes_reached()) {
+ return;
+ }
- // Cleaning dead processes
+ // Checking the number of workers
+ if (poller_too_much_workers()) {
poller_kill_stale_workers();
- } else
- // Sleep four seconds before checking for running processes again to avoid having too many workers
- sleep(4);
-
- // Checking number of workers
- if (poller_too_much_workers())
return;
-
- $cooldown = Config::get("system", "worker_cooldown", 0);
+ }
$starttime = time();
- while ($r = q("SELECT * FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00' ORDER BY `priority`, `created` LIMIT 1")) {
+ while ($r = poller_worker_process()) {
- // Constantly check the number of parallel database processes
- if ($a->max_processes_reached())
+ // Count active workers and compare them with a maximum value that depends on the load
+ if (poller_too_much_workers()) {
return;
+ }
- // Constantly check the number of available database connections to let the frontend be accessible at any time
- if (poller_max_connections_reached())
+ if (!poller_execute($r[0])) {
return;
+ }
- // Count active workers and compare them with a maximum value that depends on the load
- if (poller_too_much_workers())
+ // Quit the poller once every hour
+ if (time() > ($starttime + 3600))
return;
+ }
- q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = %d WHERE `id` = %d AND `executed` = '0000-00-00 00:00:00'",
- dbesc(datetime_convert()),
- intval(getmypid()),
- intval($r[0]["id"]));
-
- // Assure that there are no tasks executed twice
- $id = q("SELECT `id` FROM `workerqueue` WHERE `id` = %d AND `pid` = %d",
- intval($r[0]["id"]),
- intval(getmypid()));
- if (!$id) {
- logger("Queue item ".$r[0]["id"]." was executed multiple times - skip this execution", LOGGER_DEBUG);
- continue;
- }
+}
- $argv = json_decode($r[0]["parameter"]);
+/**
+ * @brief Execute a worker entry
+ *
+ * @param array $queue Workerqueue entry
+ *
+ * @return boolean "true" if further processing should be stopped
+ */
+function poller_execute($queue) {
- $argc = count($argv);
+ $a = get_app();
- // Check for existance and validity of the include file
- $include = $argv[0];
+ $mypid = getmypid();
- if (!validate_include($include)) {
- logger("Include file ".$argv[0]." is not valid!");
- q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
- continue;
- }
+ // Quit when in maintenance
+ if (Config::get('system', 'maintenance', true)) {
+ return false;
+ }
- require_once($include);
+ // Constantly check the number of parallel database processes
+ if ($a->max_processes_reached()) {
+ return false;
+ }
- $funcname = str_replace(".php", "", basename($argv[0]))."_run";
+ // Constantly check the number of available database connections to let the frontend be accessible at any time
+ if (poller_max_connections_reached()) {
+ return false;
+ }
- if (function_exists($funcname)) {
- logger("Process ".getmypid()." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." ".$r[0]["parameter"]);
- $funcname($argv, $argc);
+ $upd = q("UPDATE `workerqueue` SET `executed` = '%s', `pid` = %d WHERE `id` = %d AND `pid` = 0",
+ dbesc(datetime_convert()),
+ intval($mypid),
+ intval($queue["id"]));
- if ($cooldown > 0) {
- logger("Process ".getmypid()." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." - in cooldown for ".$cooldown." seconds");
- sleep($cooldown);
- }
+ if (!$upd) {
+ logger("Couldn't update queue entry ".$queue["id"]." - skip this execution", LOGGER_DEBUG);
+ q("COMMIT");
+ return true;
+ }
- logger("Process ".getmypid()." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." - done");
+ // 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");
- q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
- } else
- logger("Function ".$funcname." does not exist");
+ $argv = json_decode($queue["parameter"]);
- // Quit the poller once every hour
- if (time() > ($starttime + 3600))
- return;
+ // Check for existance and validity of the include file
+ $include = $argv[0];
+
+ if (!validate_include($include)) {
+ logger("Include file ".$argv[0]." is not valid!");
+ q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($queue["id"]));
+ return true;
}
+ require_once($include);
+
+ $funcname = str_replace(".php", "", basename($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");
+ }
+
+ return 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();
+ }
+
+ // 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);
+
+ $funcname($argv, $argc);
+
+ $a->process_id = $old_process_id;
+
+ $duration = number_format(microtime(true) - $stamp, 3);
+
+ logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - done in ".$duration." seconds.");
+
+ // Write down the performance values into the log
+ if (Config::get("system", "profiler")) {
+ $duration = microtime(true)-$a->performance["start"];
+
+ 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 {
+ $o = '';
+ }
+
+ logger("ID ".$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);
+ }
+
+ $cooldown = Config::get("system", "worker_cooldown", 0);
+
+ if ($cooldown > 0) {
+ logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - in cooldown for ".$cooldown." seconds");
+ sleep($cooldown);
+ }
}
/**
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 = get_config("system", "max_connections");
+ $max = Config::get("system", "max_connections");
// Fetch the percentage level where the poller will get active
- $maxlevel = get_config("system", "max_connections_level");
- if ($maxlevel == 0)
- $maxlevel = 75;
+ $maxlevel = Config::get("system", "max_connections_level", 75);
if ($max == 0) {
// the maximum number of possible user connections can be a system variable
// The processlist only shows entries of the current user
if ($max != 0) {
$r = q("SHOW PROCESSLIST");
- if (!$r)
+ if (!dbm::is_result($r))
return false;
$used = count($r);
*
*/
function poller_kill_stale_workers() {
- $r = q("SELECT `pid`, `executed` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
+ $r = q("SELECT `pid`, `executed`, `priority`, `parameter` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
if (!dbm::is_result($r)) {
// No processing here needed
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 ($duration > 180) {
- logger("Worker process ".$pid["pid"]." took more than 3 hours. It will be killed now.");
+ if ($duration > $max_duration) {
+ logger("Worker process ".$pid["pid"]." (".implode(" ", $argv).") took more than ".$max_duration." minutes. It will be killed now.");
posix_kill($pid["pid"], SIGTERM);
- // Question: If a process is stale: Should we remove it or should we reschedule it?
- // By now we rescheduling it. It's maybe not the wisest decision?
- q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `pid` = 0 WHERE `pid` = %d",
+ // We killed the stale process.
+ // To avoid a blocking situation we reschedule the process at the beginning of the queue.
+ // Additionally we are lowering the priority.
+ q("UPDATE `workerqueue` SET `executed` = '0000-00-00 00:00:00', `created` = '%s',
+ `priority` = %d, `pid` = 0 WHERE `pid` = %d",
+ dbesc(datetime_convert()),
+ intval(PRIORITY_NEGLIGIBLE),
intval($pid["pid"]));
} else
- logger("Worker process ".$pid["pid"]." now runs for ".round($duration)." minutes. That's okay.", LOGGER_DEBUG);
+ 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() {
-
-
- $queues = get_config("system", "worker_queues");
-
- if ($queues == 0)
- $queues = 4;
+ $queues = Config::get("system", "worker_queues", 4);
$maxqueues = $queues;
// Decrease the number of workers at higher load
$load = current_load();
if($load) {
- $maxsysload = intval(get_config('system','maxloadavg'));
- if($maxsysload < 1)
- $maxsysload = 50;
+ $maxsysload = intval(Config::get("system", "maxloadavg", 50));
$maxworkers = $queues;
$s = q("SELECT COUNT(*) AS `total` FROM `workerqueue` WHERE `executed` = '0000-00-00 00:00:00'");
$entries = $s[0]["total"];
- logger("Current load: ".$load." - maximum: ".$maxsysload." - current queues: ".$active."/".$entries." - maximum: ".$queues."/".$maxqueues, LOGGER_DEBUG);
+ if (Config::get("system", "worker_fastlane", false) AND ($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"];
+
+ $s = q("SELECT `id` FROM `workerqueue` WHERE `priority` <= %d AND `executed` != '0000-00-00 00:00:00' LIMIT 1",
+ intval($top_priority));
+ $high_running = dbm::is_result($s);
+
+ 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;
+ }
+ }
+ // 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("Load: ".$load."/".$maxsysload." - processes: ".$active."/".$entries." (".$processlist.") - maximum: ".$queues."/".$maxqueues, LOGGER_DEBUG);
+
+ // Are there fewer workers running as possible? Then fork a new one.
+ if (!Config::get("system", "worker_dont_fork") AND ($queues > ($active + 1)) AND ($entries > 1)) {
+ logger("Active workers: ".$active."/".$queues." Fork a new worker.", LOGGER_DEBUG);
+ $args = array("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 `workers` FROM `workerqueue` WHERE `executed` != '0000-00-00 00:00:00'");
+ $workers = q("SELECT COUNT(*) AS `processes` FROM `process` WHERE `command` = 'poller.php'");
+
+ return($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 $r;
+}
- return($workers[0]["workers"]);
+/**
+ * @brief Call the front end worker
+ */
+function call_worker() {
+ if (!Config::get("system", "frontend_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")) {
+ 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;
+ }
+
+ 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("include/poller.php", "no_cron");
+ $a = get_app();
+ $a->proc_run($args);
+ return;
+ }
+
+ // We cannot execute background processes.
+ // We now run the processes from the frontend.
+ // This won't work with long running processes.
+ poller_run_cron();
+
+ 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