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Merge pull request #3872 from annando/worker-class

New worker class that does all the work
pull/3877/head
Hypolite Petovan 5 years ago committed by GitHub
parent
commit
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  1. 111
      boot.php
  2. 9
      include/Contact.php
  3. 5
      include/api.php
  4. 33
      include/cron.php
  5. 3
      include/cronhooks.php
  6. 5
      include/dbclean.php
  7. 7
      include/dfrn.php
  8. 9
      include/diaspora.php
  9. 3
      include/directory.php
  10. 5
      include/discover_poco.php
  11. 13
      include/expire.php
  12. 3
      include/follow.php
  13. 3
      include/identity.php
  14. 12
      include/items.php
  15. 5
      include/like.php
  16. 3
      include/message.php
  17. 17
      include/notifier.php
  18. 865
      include/poller.php
  19. 5
      include/pubsubpublish.php
  20. 5
      include/queue.php
  21. 13
      include/socgraph.php
  22. 3
      include/uimport.php
  23. 5
      index.php
  24. 7
      mod/admin.php
  25. 3
      mod/contacts.php
  26. 5
      mod/dfrn_confirm.php
  27. 3
      mod/dirfind.php
  28. 3
      mod/events.php
  29. 3
      mod/fsuggest.php
  30. 7
      mod/item.php
  31. 5
      mod/mood.php
  32. 9
      mod/photos.php
  33. 5
      mod/poke.php
  34. 7
      mod/profile_photo.php
  35. 7
      mod/profiles.php
  36. 3
      mod/register.php
  37. 3
      mod/regmod.php
  38. 9
      mod/settings.php
  39. 3
      mod/tagger.php
  40. 3
      mod/videos.php
  41. 15
      mod/worker.php
  42. 993
      src/Core/Worker.php
  43. 8
      update.php

111
boot.php

@ -610,7 +610,7 @@ function check_db($via_worker) {
}
if ($build != DB_UPDATE_VERSION) {
// When we cannot execute the database update via the worker, we will do it directly
if (!proc_run(PRIORITY_CRITICAL, 'include/dbupdate.php') && $via_worker) {
if (!Worker::add(PRIORITY_CRITICAL, 'dbupdate') && $via_worker) {
update_db(get_app());
}
}
@ -1030,116 +1030,15 @@ function get_max_import_size() {
}
/**
* @brief Wrap calls to proc_close(proc_open()) and call hook
* so plugins can take part in process :)
* @brief compatibilty wrapper for Worker::add function
*
* @param (integer|array) priority or parameter array, $cmd atrings are deprecated and are ignored
*
* next args are passed as $cmd command line
* or: proc_run(PRIORITY_HIGH, "include/notifier.php", "drop", $drop_id);
* or: proc_run(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), "include/create_shadowentry.php", $post_id);
*
* @note $cmd and string args are surrounded with ""
*
* @hooks 'proc_run'
* array $arr
* @param (integer|array) priority or parameter array, strings are deprecated and are ignored
*
* @return boolean "false" if proc_run couldn't be executed
*/
function proc_run($cmd) {
$a = get_app();
function proc_run() {
$proc_args = func_get_args();
$args = array();
if (!count($proc_args)) {
return false;
}
// Preserve the first parameter
// It could contain a command, the priority or an parameter array
// If we use the parameter array we have to protect it from the following function
$run_parameter = array_shift($proc_args);
// expand any arrays
foreach ($proc_args as $arg) {
if (is_array($arg)) {
foreach ($arg as $n) {
$args[] = $n;
}
} else {
$args[] = $arg;
}
}
// Now we add the run parameters back to the array
array_unshift($args, $run_parameter);
$arr = array('args' => $args, 'run_cmd' => true);
call_hooks("proc_run", $arr);
if (!$arr['run_cmd'] || ! count($args)) {
return true;
}
$priority = PRIORITY_MEDIUM;
$dont_fork = get_config("system", "worker_dont_fork");
$created = datetime_convert();
if (is_int($run_parameter)) {
$priority = $run_parameter;
} elseif (is_array($run_parameter)) {
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'];
}
}
$argv = $args;
array_shift($argv);
$parameters = json_encode($argv);
$found = dba::exists('workerqueue', array('parameter' => $parameters, 'done' => false));
// Quit if there was a database error - a precaution for the update process to 3.5.3
if (dba::errorNo() != 0) {
return false;
}
if (!$found) {
dba::insert('workerqueue', array('parameter' => $parameters, 'created' => $created, 'priority' => $priority));
}
// Should we quit and wait for the poller to be called as a cronjob?
if ($dont_fork) {
return true;
}
// If there is a lock then we don't have to check for too much worker
if (!Lock::set('poller_worker', 0)) {
return true;
}
// If there are already enough workers running, don't fork another one
$quit = poller_too_much_workers();
Lock::remove('poller_worker');
if ($quit) {
return true;
}
// Now call the poller to execute the jobs that we just added to the queue
$args = array("include/poller.php", "no_cron");
$a->proc_run($args);
return true;
call_user_func_array('Friendica\Core\Worker::add', $proc_args);
}
function current_theme() {

9
include/Contact.php

@ -2,6 +2,7 @@
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
use Friendica\Network\Probe;
// Included here for completeness, but this is a very dangerous operation.
@ -26,10 +27,10 @@ function user_remove($uid) {
// The user and related data will be deleted in "cron_expire_and_remove_users" (cronjobs.php)
q("UPDATE `user` SET `account_removed` = 1, `account_expires_on` = UTC_TIMESTAMP() WHERE `uid` = %d", intval($uid));
proc_run(PRIORITY_HIGH, "include/notifier.php", "removeme", $uid);
Worker::add(PRIORITY_HIGH, "notifier", "removeme", $uid);
// Send an update to the directory
proc_run(PRIORITY_LOW, "include/directory.php", $r['url']);
Worker::add(PRIORITY_LOW, "directory", $r['url']);
if($uid == local_user()) {
unset($_SESSION['authenticated']);
@ -60,7 +61,7 @@ function contact_remove($id) {
dba::delete('contact', array('id' => $id));
// Delete the rest in the background
proc_run(PRIORITY_LOW, 'include/remove_contact.php', $id);
Worker::add(PRIORITY_LOW, 'remove_contact', $id);
}
@ -305,7 +306,7 @@ function get_contact_details_by_url($url, $uid = -1, $default = array()) {
if ((($profile["addr"] == "") || ($profile["name"] == "")) && ($profile["gid"] != 0) &&
in_array($profile["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS))) {
proc_run(PRIORITY_LOW, "include/update_gcontact.php", $profile["gid"]);
Worker::add(PRIORITY_LOW, "update_gcontact", $profile["gid"]);
}
// Show contact details of Diaspora contacts only if connected

5
include/api.php

@ -9,6 +9,7 @@
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Config;
use Friendica\Core\Worker;
require_once 'include/HTTPExceptions.php';
require_once 'include/bbcode.php';
@ -3761,10 +3762,10 @@ $called_api = null;
//$user = api_get_user(get_app());
$url = System::baseUrl() . '/profile/' . get_app()->user['nickname'];
if ($url && strlen(get_config('system', 'directory'))) {
proc_run(PRIORITY_LOW, "include/directory.php", $url);
Worker::add(PRIORITY_LOW, "directory", $url);
}
proc_run(PRIORITY_LOW, 'include/profile_update.php', api_user());
Worker::add(PRIORITY_LOW, 'profile_update', api_user());
// output for client
if ($data) {

33
include/cron.php

@ -1,6 +1,7 @@
<?php
use Friendica\Core\Config;
use Friendica\Core\Worker;
function cron_run(&$argv, &$argc){
global $a;
@ -31,31 +32,31 @@ function cron_run(&$argv, &$argc){
logger('cron: start');
// run queue delivery process in the background
proc_run(PRIORITY_NEGLIGIBLE, "include/queue.php");
Worker::add(PRIORITY_NEGLIGIBLE, "queue");
// run the process to discover global contacts in the background
proc_run(PRIORITY_LOW, "include/discover_poco.php");
Worker::add(PRIORITY_LOW, "discover_poco");
// run the process to update locally stored global contacts in the background
proc_run(PRIORITY_LOW, "include/discover_poco.php", "checkcontact");
Worker::add(PRIORITY_LOW, "discover_poco", "checkcontact");
// Expire and remove user entries
proc_run(PRIORITY_MEDIUM, "include/cronjobs.php", "expire_and_remove_users");
Worker::add(PRIORITY_MEDIUM, "cronjobs", "expire_and_remove_users");
// Call possible post update functions
proc_run(PRIORITY_LOW, "include/cronjobs.php", "post_update");
Worker::add(PRIORITY_LOW, "cronjobs", "post_update");
// update nodeinfo data
proc_run(PRIORITY_LOW, "include/cronjobs.php", "nodeinfo");
Worker::add(PRIORITY_LOW, "cronjobs", "nodeinfo");
// Clear cache entries
proc_run(PRIORITY_LOW, "include/cronjobs.php", "clear_cache");
Worker::add(PRIORITY_LOW, "cronjobs", "clear_cache");
// Repair missing Diaspora values in contacts
proc_run(PRIORITY_LOW, "include/cronjobs.php", "repair_diaspora");
Worker::add(PRIORITY_LOW, "cronjobs", "repair_diaspora");
// Repair entries in the database
proc_run(PRIORITY_LOW, "include/cronjobs.php", "repair_database");
Worker::add(PRIORITY_LOW, "cronjobs", "repair_database");
// once daily run birthday_updates and then expire in background
$d1 = get_config('system', 'last_expire_day');
@ -63,19 +64,19 @@ function cron_run(&$argv, &$argc){
if ($d2 != intval($d1)) {
proc_run(PRIORITY_LOW, "include/cronjobs.php", "update_contact_birthdays");
Worker::add(PRIORITY_LOW, "cronjobs", "update_contact_birthdays");
proc_run(PRIORITY_LOW, "include/discover_poco.php", "update_server");
Worker::add(PRIORITY_LOW, "discover_poco", "update_server");
proc_run(PRIORITY_LOW, "include/discover_poco.php", "suggestions");
Worker::add(PRIORITY_LOW, "discover_poco", "suggestions");
set_config('system', 'last_expire_day', $d2);
proc_run(PRIORITY_LOW, 'include/expire.php');
Worker::add(PRIORITY_LOW, 'expire');
proc_run(PRIORITY_MEDIUM, 'include/dbclean.php');
Worker::add(PRIORITY_MEDIUM, 'dbclean');
proc_run(PRIORITY_LOW, "include/cronjobs.php", "update_photo_albums");
Worker::add(PRIORITY_LOW, "cronjobs", "update_photo_albums");
// Delete all done workerqueue entries
dba::delete('workerqueue', array('`done` AND `executed` < UTC_TIMESTAMP() - INTERVAL 12 HOUR'));
@ -247,7 +248,7 @@ function cron_poll_contacts($argc, $argv) {
} else {
$priority = PRIORITY_LOW;
}
proc_run(array('priority' => $priority, 'dont_fork' => true), 'include/onepoll.php', (int)$contact['id']);
Worker::add(array('priority' => $priority, 'dont_fork' => true), 'onepoll', (int)$contact['id']);
}
}
}

3
include/cronhooks.php

@ -1,6 +1,7 @@
<?php
use Friendica\Core\Config;
use Friendica\Core\Worker;
function cronhooks_run(&$argv, &$argc) {
global $a;
@ -41,7 +42,7 @@ function cronhooks_run(&$argv, &$argc) {
if (is_array($a->hooks) && array_key_exists("cron", $a->hooks)) {
foreach ($a->hooks["cron"] as $hook) {
logger("Calling cronhooks for '" . $hook[1] . "'", LOGGER_DEBUG);
proc_run(PRIORITY_MEDIUM, "include/cronhooks.php", $hook[1]);
Worker::add(PRIORITY_MEDIUM, "cronhooks", $hook[1]);
}
}

5
include/dbclean.php

@ -5,6 +5,7 @@
*/
use Friendica\Core\Config;
use Friendica\Core\Worker;
function dbclean_run(&$argv, &$argc) {
if (!Config::get('system', 'dbclean', false)) {
@ -25,7 +26,7 @@ function dbclean_run(&$argv, &$argc) {
// Execute the background script for a step when it isn't finished.
// Execute step 8 and 9 only when $days is defined.
if (!Config::get('system', 'finished-dbclean-'.$i, false) && (($i < 8) || ($days > 0))) {
proc_run(PRIORITY_LOW, 'include/dbclean.php', $i);
Worker::add(PRIORITY_LOW, 'dbclean', $i);
}
}
} else {
@ -297,6 +298,6 @@ function remove_orphans($stage = 0) {
// Call it again if not all entries were purged
if (($stage != 0) && ($count > 0)) {
proc_run(PRIORITY_MEDIUM, 'include/dbclean.php');
Worker::add(PRIORITY_MEDIUM, 'dbclean');
}
}

7
include/dfrn.php

@ -9,6 +9,7 @@
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
require_once("include/Contact.php");
require_once("include/ostatus.php");
@ -2019,7 +2020,7 @@ class dfrn {
$changed = true;
if ($entrytype == DFRN_REPLY_RC) {
proc_run(PRIORITY_HIGH, "include/notifier.php","comment-import", $current["id"]);
Worker::add(PRIORITY_HIGH, "notifier","comment-import", $current["id"]);
}
}
@ -2652,7 +2653,7 @@ class dfrn {
if ($posted_id && $parent && ($entrytype == DFRN_REPLY_RC)) {
logger("Notifying followers about comment ".$posted_id, LOGGER_DEBUG);
proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $posted_id);
Worker::add(PRIORITY_HIGH, "notifier", "comment-import", $posted_id);
}
return true;
@ -2834,7 +2835,7 @@ class dfrn {
if ($entrytype == DFRN_REPLY_RC) {
logger("Notifying followers about deletion of post " . $item["id"], LOGGER_DEBUG);
proc_run(PRIORITY_HIGH, "include/notifier.php","drop", $item["id"]);
Worker::add(PRIORITY_HIGH, "notifier","drop", $item["id"]);
}
}
}

9
include/diaspora.php

@ -12,6 +12,7 @@ use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Config;
use Friendica\Core\PConfig;
use Friendica\Core\Worker;
use Friendica\Network\Probe;
require_once 'include/items.php';
@ -1605,7 +1606,7 @@ class Diaspora {
dba::insert('sign', array('iid' => $message_id, 'signed_text' => json_encode($data)));
// notify others
proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
Worker::add(PRIORITY_HIGH, "notifier", "comment-import", $message_id);
}
return true;
@ -1915,7 +1916,7 @@ class Diaspora {
dba::insert('sign', array('iid' => $message_id, 'signed_text' => json_encode($data)));
// notify others
proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
Worker::add(PRIORITY_HIGH, "notifier", "comment-import", $message_id);
}
return true;
@ -2191,7 +2192,7 @@ class Diaspora {
$i = item_store($arr);
if ($i)
proc_run(PRIORITY_HIGH, "include/notifier.php", "activity", $i);
Worker::add(PRIORITY_HIGH, "notifier", "activity", $i);
}
}
}
@ -2614,7 +2615,7 @@ class Diaspora {
// Now check if the retraction needs to be relayed by us
if ($parent["origin"]) {
// notify others
proc_run(PRIORITY_HIGH, "include/notifier.php", "drop", $item["id"]);
Worker::add(PRIORITY_HIGH, "notifier", "drop", $item["id"]);
}
}

3
include/directory.php

@ -1,6 +1,7 @@
<?php
use Friendica\Core\Config;
use Friendica\Core\Worker;
function directory_run(&$argv, &$argc){
$dir = Config::get('system', 'directory');
@ -37,7 +38,7 @@ function directory_update_all() {
if (dbm::is_result($r)) {
foreach ($r AS $user) {
proc_run(PRIORITY_LOW, 'include/directory.php', $user['url']);
Worker::add(PRIORITY_LOW, 'directory', $user['url']);
}
}
}

5
include/discover_poco.php

@ -1,6 +1,7 @@
<?php
use Friendica\Core\Config;
use Friendica\Core\Worker;
require_once 'include/probe.php';
require_once 'include/socgraph.php';
@ -118,7 +119,7 @@ function update_server() {
}
logger('Update server status for server '.$server["url"], LOGGER_DEBUG);
proc_run(PRIORITY_LOW, "include/discover_poco.php", "server", $server["url"]);
Worker::add(PRIORITY_LOW, "discover_poco", "server", $server["url"]);
if (++$updated > 250) {
return;
@ -177,7 +178,7 @@ function discover_users() {
if ((($server_url == "") && ($user["network"] == NETWORK_FEED)) || $force_update || poco_check_server($server_url, $user["network"])) {
logger('Check profile '.$user["url"]);
proc_run(PRIORITY_LOW, "include/discover_poco.php", "check_profile", $user["url"]);
Worker::add(PRIORITY_LOW, "discover_poco", "check_profile", $user["url"]);
if (++$checked > 100) {
return;

13
include/expire.php

@ -1,6 +1,7 @@
<?php
use Friendica\Core\Config;
use Friendica\Core\Worker;
function expire_run(&$argv, &$argc){
global $a;
@ -47,14 +48,14 @@ function expire_run(&$argv, &$argc){
logger('expire: start');
proc_run(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'include/expire.php', 'delete');
Worker::add(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'expire', 'delete');
$r = dba::p("SELECT `uid`, `username` FROM `user` WHERE `expire` != 0");
while ($row = dba::fetch($r)) {
logger('Calling expiry for user '.$row['uid'].' ('.$row['username'].')', LOGGER_DEBUG);
proc_run(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'include/expire.php', (int)$row['uid']);
Worker::add(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'expire', (int)$row['uid']);
}
dba::close($r);
@ -63,8 +64,8 @@ function expire_run(&$argv, &$argc){
if (is_array($a->hooks) && array_key_exists('expire', $a->hooks)) {
foreach ($a->hooks['expire'] as $hook) {
logger("Calling expire hook for '" . $hook[1] . "'", LOGGER_DEBUG);
proc_run(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'include/expire.php', 'hook', $hook[1]);
Worker::add(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'expire', 'hook', $hook[1]);
}
}

3
include/follow.php

@ -2,6 +2,7 @@
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
use Friendica\Network\Probe;
require_once 'include/probe.php';
@ -250,7 +251,7 @@ function new_contact($uid, $url, $interactive = false, $network = '') {
// pull feed and consume it, which should subscribe to the hub.
proc_run(PRIORITY_HIGH, "include/onepoll.php", $contact_id, "force");
Worker::add(PRIORITY_HIGH, "onepoll", $contact_id, "force");
$r = q("SELECT `contact`.*, `user`.* FROM `contact` INNER JOIN `user` ON `contact`.`uid` = `user`.`uid`
WHERE `user`.`uid` = %d AND `contact`.`self` LIMIT 1",

3
include/identity.php

@ -5,6 +5,7 @@
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
require_once 'include/ForumManager.php';
require_once 'include/bbcode.php';
@ -888,7 +889,7 @@ function zrl_init(App $a) {
return;
}
proc_run(PRIORITY_LOW, 'include/gprobe.php', $tmp_str);
Worker::add(PRIORITY_LOW, 'gprobe', $tmp_str);
$arr = array('zrl' => $tmp_str, 'url' => $a->cmd);
call_hooks('zrl_init', $arr);
}

12
include/items.php

@ -9,6 +9,7 @@ use Friendica\Core\System;
use Friendica\ParseUrl;
use Friendica\Util\Lock;
use Friendica\Core\Config;
use Friendica\Core\Worker;
require_once 'include/bbcode.php';
require_once 'include/oembed.php';
@ -1138,7 +1139,7 @@ function item_store($arr, $force_parent = false, $notify = false, $dontcache = f
check_item_notification($current_post, $uid);
if ($notify) {
proc_run(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), "include/notifier.php", $notify_type, $current_post);
Worker::add(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), "notifier", $notify_type, $current_post);
}
return $current_post;
@ -1421,7 +1422,7 @@ function tag_deliver($uid, $item_id) {
);
update_thread($item_id);
proc_run(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), 'include/notifier.php', 'tgroup', $item_id);
Worker::add(array('priority' => PRIORITY_HIGH, 'dont_fork' => true), 'notifier', 'tgroup', $item_id);
}
@ -2061,8 +2062,7 @@ function item_expire($uid, $days, $network = "", $force = false) {
drop_item($item['id'], false);
}
proc_run(array('priority' => PRIORITY_LOW, 'dont_fork' => true), "include/notifier.php", "expire", $uid);
Worker::add(array('priority' => PRIORITY_LOW, 'dont_fork' => true), "notifier", "expire", $uid);
}
/// @TODO type-hint is array
@ -2084,7 +2084,7 @@ function drop_items($items) {
// multiple threads may have been deleted, send an expire notification
if ($uid) {
proc_run(array('priority' => PRIORITY_LOW, 'dont_fork' => true), "include/notifier.php", "expire", $uid);
Worker::add(array('priority' => PRIORITY_LOW, 'dont_fork' => true), "notifier", "expire", $uid);
}
}
@ -2276,7 +2276,7 @@ function drop_item($id, $interactive = true) {
$drop_id = intval($item['id']);
$priority = ($interactive ? PRIORITY_HIGH : PRIORITY_LOW);
proc_run(array('priority' => $priority, 'dont_fork' => true), "include/notifier.php", "drop", $drop_id);
Worker::add(array('priority' => $priority, 'dont_fork' => true), "notifier", "drop", $drop_id);
if (! $interactive) {
return $owner;

5
include/like.php

@ -2,6 +2,7 @@
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
require_once("include/diaspora.php");
@ -166,7 +167,7 @@ function do_like($item_id, $verb) {
);
$like_item_id = $like_item['id'];
proc_run(PRIORITY_HIGH, "include/notifier.php", "like", $like_item_id);
Worker::add(PRIORITY_HIGH, "notifier", "like", $like_item_id);
if (!$event_verb_flag || $like_item['verb'] == $activity) {
return true;
@ -253,7 +254,7 @@ EOT;
call_hooks('post_local_end', $new_item);
proc_run(PRIORITY_HIGH, "include/notifier.php", "like", $new_item_id);
Worker::add(PRIORITY_HIGH, "notifier", "like", $new_item_id);
return true;
}

3
include/message.php

@ -4,6 +4,7 @@
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
function send_message($recipient=0, $body='', $subject='', $replyto=''){
@ -143,7 +144,7 @@ function send_message($recipient=0, $body='', $subject='', $replyto=''){
}
if ($post_id) {
proc_run(PRIORITY_HIGH, "include/notifier.php", "mail", $post_id);
Worker::add(PRIORITY_HIGH, "notifier", "mail", $post_id);
return intval($post_id);
} else {
return -3;

17
include/notifier.php

@ -2,6 +2,7 @@
use Friendica\App;
use Friendica\Core\Config;
use Friendica\Core\Worker;
require_once 'include/queue_fn.php';
require_once 'include/html2plain.php';
@ -19,7 +20,7 @@ require_once 'include/salmon.php';
/*
* The notifier is typically called with:
*
* proc_run(PRIORITY_HIGH, "include/notifier.php", COMMAND, ITEM_ID);
* Worker::add(PRIORITY_HIGH, "notifier", COMMAND, ITEM_ID);
*
* where COMMAND is one of the following:
*
@ -375,7 +376,7 @@ function notifier_run(&$argv, &$argc){
// a delivery fork. private groups (forum_mode == 2) do not uplink
if ((intval($parent['forum_mode']) == 1) && (! $top_level) && ($cmd !== 'uplink')) {
proc_run($a->queue['priority'], 'include/notifier.php', 'uplink', $item_id);
Worker::add($a->queue['priority'], 'notifier', 'uplink', $item_id);
}
$conversants = array();
@ -514,8 +515,8 @@ function notifier_run(&$argv, &$argc){
}
logger("Deliver ".$target_item["guid"]." to ".$contact['url']." via network ".$contact['network'], LOGGER_DEBUG);
proc_run(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'include/delivery.php', $cmd, $item_id, (int)$contact['id']);
Worker::add(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'delivery', $cmd, $item_id, (int)$contact['id']);
}
}
@ -579,8 +580,8 @@ function notifier_run(&$argv, &$argc){
if ((! $mail) && (! $fsuggest) && (! $followup)) {
logger('notifier: delivery agent: '.$rr['name'].' '.$rr['id'].' '.$rr['network'].' '.$target_item["guid"]);
proc_run(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'include/delivery.php', $cmd, $item_id, (int)$rr['id']);
Worker::add(array('priority' => $a->queue['priority'], 'created' => $a->queue['created'], 'dont_fork' => true),
'delivery', $cmd, $item_id, (int)$rr['id']);
}
}
}
@ -599,8 +600,8 @@ function notifier_run(&$argv, &$argc){
logger('Activating internal PuSH for item '.$item_id, LOGGER_DEBUG);
// Handling the pubsubhubbub requests
proc_run(array('priority' => PRIORITY_HIGH, 'created' => $a->queue['created'], 'dont_fork' => true),
'include/pubsubpublish.php');
Worker::add(array('priority' => PRIORITY_HIGH, 'created' => $a->queue['created'], 'dont_fork' => true),
'pubsubpublish');
}
logger('notifier: calling hooks', LOGGER_DEBUG);

865
include/poller.php

@ -1,9 +1,7 @@
<?php
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Worker;
use Friendica\Core\Config;
use Friendica\Util\Lock;
if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
$directory = dirname($_SERVER["argv"][0]);
@ -18,10 +16,8 @@ if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
require_once("boot.php");
function poller_run($argv, $argc){
global $a, $poller_up_start, $poller_db_duration;
$poller_up_start = microtime(true);
function poller_run($argv, $argc) {
global $a;
if (empty($a)) {
$a = new App(dirname(__DIR__));
@ -46,858 +42,15 @@ function poller_run($argv, $argc){
load_hooks();
// At first check the maximum load. We shouldn't continue with a high load
if ($a->maxload_reached()) {
logger('Pre check: maximum load reached, quitting.', LOGGER_DEBUG);
return;
}
// We now start the process. This is done after the load check since this could increase the load.
$a->start_process();
// Kill stale processes every 5 minutes
$last_cleanup = Config::get('system', 'poller_last_cleaned', 0);
if (time() > ($last_cleanup + 300)) {
Config::set('system', 'poller_last_cleaned', time());
poller_kill_stale_workers();
}
// Count active workers and compare them with a maximum value that depends on the load
if (poller_too_much_workers()) {
logger('Pre check: Active worker limit reached, quitting.', LOGGER_DEBUG);
return;
}
// Do we have too few memory?
if ($a->min_memory_reached()) {
logger('Pre check: Memory limit reached, quitting.', LOGGER_DEBUG);
return;
}
// Possibly there are too much database connections
if (poller_max_connections_reached()) {
logger('Pre check: maximum connections reached, quitting.', LOGGER_DEBUG);
return;
}
// Possibly there are too much database processes that block the system
if ($a->max_processes_reached()) {
logger('Pre check: maximum processes reached, quitting.', LOGGER_DEBUG);
return;
}
// Now we start additional cron processes if we should do so
if (($argc <= 1) || ($argv[1] != "no_cron")) {
poller_run_cron();
}
$starttime = time();
// We fetch the next queue entry that is about to be executed
while ($r = poller_worker_process($passing_slow)) {
// When we are processing jobs with a lower priority, we don't refetch new jobs
// Otherwise fast jobs could wait behind slow ones and could be blocked.
$refetched = $passing_slow;
foreach ($r AS $entry) {
// Assure that the priority is an integer value
$entry['priority'] = (int)$entry['priority'];
// The work will be done
if (!poller_execute($entry)) {
logger('Process execution failed, quitting.', LOGGER_DEBUG);
return;
}
// If possible we will fetch new jobs for this worker
if (!$refetched && Lock::set('poller_worker_process', 0)) {
$stamp = (float)microtime(true);
$refetched = find_worker_processes($passing_slow);
$poller_db_duration += (microtime(true) - $stamp);
Lock::remove('poller_worker_process');
}
}
// To avoid the quitting of multiple pollers only one poller at a time will execute the check
if (Lock::set('poller_worker', 0)) {
$stamp = (float)microtime(true);
// Count active workers and compare them with a maximum value that depends on the load
if (poller_too_much_workers()) {
logger('Active worker limit reached, quitting.', LOGGER_DEBUG);
return;
}
// Check free memory
if ($a->min_memory_reached()) {
logger('Memory limit reached, quitting.', LOGGER_DEBUG);
return;
}
Lock::remove('poller_worker');
$poller_db_duration += (microtime(true) - $stamp);
}
// Quit the poller once every 5 minutes
if (time() > ($starttime + 300)) {
logger('Process lifetime reached, quitting.', LOGGER_DEBUG);
return;
}
}
logger("Couldn't select a workerqueue entry, quitting.", LOGGER_DEBUG);
}
/**
* @brief Returns the number of non executed entries in the worker queue
*
* @return integer Number of non executed entries in the worker queue
*/
function poller_total_entries() {
$s = q("SELECT COUNT(*) AS `total` FROM `workerqueue` WHERE `executed` <= '%s' AND NOT `done`", dbesc(NULL_DATE));
if (dbm::is_result($s)) {
return $s[0]["total"];
} else {
return 0;
}
}
/**
* @brief Returns the highest priority in the worker queue that isn't executed
*
* @return integer Number of active poller processes
*/
function poller_highest_priority() {
$s = q("SELECT `priority` FROM `workerqueue` WHERE `executed` <= '%s' AND NOT `done` ORDER BY `priority` LIMIT 1", dbesc(NULL_DATE));
if (dbm::is_result($s)) {
return $s[0]["priority"];
} else {
return 0;
}
}
/**
* @brief Returns if a process with the given priority is running
*
* @param integer $priority The priority that should be checked
*
* @return integer Is there a process running with that priority?
*/
function poller_process_with_priority_active($priority) {
$s = q("SELECT `id` FROM `workerqueue` WHERE `priority` <= %d AND `executed` > '%s' AND NOT `done` LIMIT 1",
intval($priority), dbesc(NULL_DATE));
return dbm::is_result($s);
}
/**
* @brief Execute a worker entry
*
* @param array $queue Workerqueue entry
*
* @return boolean "true" if further processing should be stopped
*/
function poller_execute($queue) {
global $poller_db_duration, $poller_last_update;
$a = get_app();
$mypid = getmypid();
// Quit when in maintenance
if (Config::get('system', 'maintenance', true)) {
logger("Maintenance mode - quit process ".$mypid, LOGGER_DEBUG);
return false;
}
// Constantly check the number of parallel database processes
if ($a->max_processes_reached()) {
logger("Max processes reached for process ".$mypid, LOGGER_DEBUG);
return false;
}
// Constantly check the number of available database connections to let the frontend be accessible at any time
if (poller_max_connections_reached()) {
logger("Max connection reached for process ".$mypid, LOGGER_DEBUG);
return false;
}
$argv = json_decode($queue["parameter"]);
// Check for existance and validity of the include file
$include = $argv[0];
if (!validate_include($include)) {
logger("Include file ".$argv[0]." is not valid!");
dba::delete('workerqueue', array('id' => $queue["id"]));
return true;
}
require_once($include);
$funcname = str_replace(".php", "", basename($argv[0]))."_run";
if (function_exists($funcname)) {
// We constantly update the "executed" date every minute to avoid being killed too soon
if (!isset($poller_last_update)) {
$poller_last_update = strtotime($queue["executed"]);
}
$age = (time() - $poller_last_update) / 60;
$poller_last_update = time();
if ($age > 1) {
$stamp = (float)microtime(true);
dba::update('workerqueue', array('executed' => datetime_convert()), array('pid' => $mypid, 'done' => false));
$poller_db_duration += (microtime(true) - $stamp);
}
poller_exec_function($queue, $funcname, $argv);
$stamp = (float)microtime(true);
if (dba::update('workerqueue', array('done' => true), array('id' => $queue["id"]))) {
Config::set('system', 'last_poller_execution', datetime_convert());
}
$poller_db_duration = (microtime(true) - $stamp);
} else {
logger("Function ".$funcname." does not exist");
dba::delete('workerqueue', array('id' => $queue["id"]));
}
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) {
global $poller_up_start, $poller_db_duration, $poller_lock_duration;
$a = get_app();
$mypid = getmypid();
$argc = count($argv);
$new_process_id = uniqid("wrk", true);
logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." ".$queue["parameter"]." - Process PID: ".$new_process_id);
$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 = $new_process_id;
$a->queue = $queue;
$up_duration = number_format(microtime(true) - $poller_up_start, 3);
// Reset global data to avoid interferences
unset($_SESSION);
$funcname($argv, $argc);
$a->process_id = $old_process_id;
unset($a->queue);
$duration = number_format(microtime(true) - $stamp, 3);
$poller_up_start = microtime(true);
/* With these values we can analyze how effective the worker is.
* The database and rest time should be low since this is the unproductive time.
* The execution time is the productive time.
* By changing parameters like the maximum number of workers we can check the effectivness.
*/
logger('DB: '.number_format($poller_db_duration, 2).
' - Lock: '.number_format($poller_lock_duration, 2).
' - Rest: '.number_format($up_duration - $poller_db_duration - $poller_lock_duration, 2).
' - Execution: '.number_format($duration, 2), LOGGER_DEBUG);
$poller_lock_duration = 0;
if ($duration > 3600) {
logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 1 hour (".round($duration/60, 3).")", LOGGER_DEBUG);
} elseif ($duration > 600) {
logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 10 minutes (".round($duration/60, 3).")", LOGGER_DEBUG);
} elseif ($duration > 300) {
logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 5 minutes (".round($duration/60, 3).")", LOGGER_DEBUG);
} elseif ($duration > 120) {
logger("Prio ".$queue["priority"].": ".$queue["parameter"]." - longer than 2 minutes (".round($duration/60, 3).")", LOGGER_DEBUG);
}
logger("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - done in ".$duration." seconds. Process PID: ".$new_process_id);
// 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);
}
}
/**
* @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
$r = q("SHOW VARIABLES WHERE `variable_name` = 'max_user_connections'");
if (dbm::is_result($r)) {
$max = $r[0]["Value"];
}
// Or it can be granted. This overrides the system variable
$r = q("SHOW GRANTS");
if (dbm::is_result($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 $max is set we will use the processlist to determine the current number of connections
// The processlist only shows entries of the current user
if ($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;
}
}
// We will now check for the system values.
// This limit could be reached although the user limits are fine.
$r = q("SHOW VARIABLES WHERE `variable_name` = 'max_connections'");
if (!dbm::is_result($r)) {
return false;
}
$max = intval($r[0]["Value"]);
if ($max == 0) {
return false;
}
$r = q("SHOW STATUS WHERE `variable_name` = 'Threads_connected'");
if (!dbm::is_result($r)) {
return false;
}
$used = intval($r[0]["Value"]);
if ($used == 0) {
return false;
}
logger("Connection usage (system values): ".$used."/".$max, LOGGER_DEBUG);
$level = $used / $max * 100;
if ($level < $maxlevel) {
return false;
}
logger("Maximum level (".$level."%) of system connections reached: ".$used."/".$max);
return true;
}
/**
* @brief fix the queue entry if the worker process died
*
*/
function poller_kill_stale_workers() {
$entries = dba::select('workerqueue', array('id', 'pid', 'executed', 'priority', 'parameter'),
array('`executed` > ? AND NOT `done` AND `pid` != 0', NULL_DATE),
array('order' => array('priority', 'created')));
while ($entry = dba::fetch($entries)) {
if (!posix_kill($entry["pid"], 0)) {
dba::update('workerqueue', array('executed' => NULL_DATE, 'pid' => 0),
array('id' => $entry["id"]));
} else {
// Kill long running processes
// Check if the priority is in a valid range
if (!in_array($entry["priority"], array(PRIORITY_CRITICAL, PRIORITY_HIGH, PRIORITY_MEDIUM, PRIORITY_LOW, PRIORITY_NEGLIGIBLE))) {
$entry["priority"] = PRIORITY_MEDIUM;
}
// Define the maximum durations
$max_duration_defaults = array(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"]);
$argv[0] = basename($argv[0]);
// How long is the process already running?
$duration = (time() - strtotime($entry["executed"])) / 60;
if ($duration > $max_duration) {
logger("Worker process ".$entry["pid"]." (".implode(" ", $argv).") took more than ".$max_duration." minutes. It will be killed now.");
posix_kill($entry["pid"], SIGTERM);
// We killed the stale process.
// To avoid a blocking situation we reschedule the process at the beginning of the queue.
// Additionally we are lowering the priority. (But not PRIORITY_CRITICAL)
if ($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;
}
dba::update('workerqueue',
array('executed' => NULL_DATE, 'created' => datetime_convert(), 'priority' => $new_priority, 'pid' => 0),
array('id' => $entry["id"]));
} else {
logger("Worker process ".$entry["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;
$active = poller_active_workers();
// Decrease the number of workers at higher load
$load = current_load();
if ($load) {
$maxsysload = intval(Config::get("system", "maxloadavg", 50));
$maxworkers = $queues;
// Some magical mathemathics to reduce the workers
$exponent = 3;
$slope = $maxworkers / pow($maxsysload, $exponent);
$queues = ceil($slope * pow(max(0, $maxsysload - $load), $exponent));
if (Config::get('system', 'worker_debug')) {
// Create a list of queue entries grouped by their priority
$listitem = array();
// Adding all processes with no workerqueue entry
$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` WHERE NOT EXISTS
(SELECT id FROM `workerqueue`
WHERE `workerqueue`.`pid` = `process`.`pid` AND NOT `done` AND `pid` != ?)", getmypid());
if ($process = dba::fetch($processes)) {
$listitem[0] = "0:".$process["running"];
}
dba::close($processes);
// Now adding all processes with workerqueue entries
$entries = dba::p("SELECT COUNT(*) AS `entries`, `priority` FROM `workerqueue` WHERE NOT `done` GROUP BY `priority`");
while ($entry = dba::fetch($entries)) {
$processes = dba::p("SELECT COUNT(*) AS `running` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` AND NOT `done` WHERE `priority` = ?", $entry["priority"]);
if ($process = dba::fetch($processes)) {
$listitem[$entry["priority"]] = $entry["priority"].":".$process["running"]."/".$entry["entries"];
}
dba::close($processes);
}
dba::close($entries);
$intervals = array(1, 10, 60);
$jobs_per_minute = array();
foreach ($intervals AS $interval) {
$jobs = dba::p("SELECT COUNT(*) AS `jobs` FROM `workerqueue` WHERE `done` AND `executed` > UTC_TIMESTAMP() - INTERVAL ".intval($interval)." MINUTE");
if ($job = dba::fetch($jobs)) {
$jobs_per_minute[$interval] = number_format($job['jobs'] / $interval, 0);
}
dba::close($jobs);
}
$processlist = ' - jpm: '.implode('/', $jobs_per_minute).' ('.implode(', ', $listitem).')';
}
$entries = poller_total_entries();
if (Config::get("system", "worker_fastlane", false) && ($queues > 0) && ($entries > 0) && ($active >= $queues)) {
$top_priority = poller_highest_priority();
$high_running = poller_process_with_priority_active($top_priority);
if (!$high_running && ($top_priority > PRIORITY_UNDEFINED) && ($top_priority < PRIORITY_NEGLIGIBLE)) {
logger("There are jobs with priority ".$top_priority." waiting but none is executed. Open a fastlane.", LOGGER_DEBUG);
$queues = $active + 1;
}
}
logger("Load: ".$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") && ($queues > ($active + 1)) && ($entries > 1)) {
logger("Active workers: ".$active."/".$queues." Fork a new worker.", LOGGER_DEBUG);
$args = array("include/poller.php", "no_cron");
get_app()->proc_run($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;
$r = q("SELECT `priority`
FROM `process`
INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` AND NOT `done`");
// No active processes at all? Fine
if (!dbm::is_result($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 Find and claim the next worker process for us
*
* @param boolean $passing_slow Returns if we had passed low priority processes
* @return boolean Have we found something?
*/
function find_worker_processes(&$passing_slow) {
$mypid = getmypid();
// Check if we should pass some low priority process
$highest_priority = 0;
$found = false;
$passing_slow = false;
// The higher the number of parallel workers, the more we prefetch to prevent concurring access
// We decrease the limit with the number of entries left in the queue
$worker_queues = Config::get("system", "worker_queues", 4);
$queue_length = Config::get('system', 'worker_fetch_limit', 1);
$lower_job_limit = $worker_queues * $queue_length * 2;
$jobs = poller_total_entries();
// Now do some magic
$exponent = 2;
$slope = $queue_length / pow($lower_job_limit, $exponent);
$limit = min($queue_length, ceil($slope * pow($jobs, $exponent)));
logger('Total: '.$jobs.' - Maximum: '.$queue_length.' - jobs per queue: '.$limit, LOGGER_DEBUG);
if (poller_passing_slow($highest_priority)) {
// Are there waiting processes with a higher priority than the currently highest?
$result = dba::select('workerqueue', array('id'), array("`executed` <= ? AND `priority` < ? AND NOT `done`", NULL_DATE, $highest_priority),
array('limit' => $limit, 'order' => array('priority', 'created'), 'only_query' => true));
while ($id = dba::fetch($result)) {
$ids[] = $id["id"];
}
dba::close($result);
$found = (count($ids) > 0);
if (!$found) {
// Give slower processes some processing time
$result = dba::select('workerqueue', array('id'), array("`executed` <= ? AND `priority` > ? AND NOT `done`", NULL_DATE, $highest_priority),
array('limit' => $limit, 'order' => array('priority', 'created'), 'only_query' => true));
while ($id = dba::fetch($result)) {
$ids[] = $id["id"];
}
dba::close($result);
$found = (count($ids) > 0);
$passing_slow = $found;
}
}
// If there is no result (or we shouldn't pass lower processes) we check without priority limit
if (!$found) {
$result = dba::select('workerqueue', array('id'), array("`executed` <= ? AND NOT `done`", NULL_DATE),
array('limit' => $limit, 'order' => array('priority', 'created'), 'only_query' => true));
while ($id = dba::fetch($result)) {
$ids[] = $id["id"];
}
dba::close($result);
$found = (count($ids) > 0);
}
if ($found) {
$condition = "`id` IN (".substr(str_repeat("?, ", count($ids)), 0, -2).") AND `pid` = 0 AND NOT `done`";
array_unshift($ids, $condition);
dba::update('workerqueue', array('executed' => datetime_convert(), 'pid' => $mypid), $ids);
}
return $found;
}
/**
* @brief Returns the next worker process
*
* @param boolean $passing_slow Returns if we had passed low priority processes
* @return string SQL statement
*/
function poller_worker_process(&$passing_slow) {
global $poller_db_duration, $poller_lock_duration;
$stamp = (float)microtime(true);
// There can already be jobs for us in the queue.
$r = q("SELECT * FROM `workerqueue` WHERE `pid` = %d AND NOT `done`", intval(getmypid()));
if (dbm::is_result($r)) {
$poller_db_duration += (microtime(true) - $stamp);
return $r;
}