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New process table for a better detection of running workers

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This commit is contained in:
Michael Vogel 2016-09-09 20:33:54 +00:00
parent 5ebeb7e85c
commit 22f32d9721
23 changed files with 107 additions and 13 deletions
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28
include/poller.php
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@ -29,6 +29,10 @@ function poller_run(&$argv, &$argc){
unset($db_host, $db_user, $db_pass, $db_data);
};
$a->start_process();
$mypid = getmypid();
if ($a->max_processes_reached())
return;
@ -81,15 +85,19 @@ function poller_run(&$argv, &$argc){
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($mypid),
intval($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()));
$id = q("SELECT `pid`, `executed` FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
if (!$id) {
logger("Queue item ".$r[0]["id"]." was executed multiple times - skip this execution", LOGGER_DEBUG);
logger("Queue item ".$r[0]["id"]." vanished - skip this execution", LOGGER_DEBUG);
continue;
} elseif ((strtotime($id[0]["executed"]) <= 0) OR ($id[0]["pid"] == 0)) {
logger("Entry for queue item ".$r[0]["id"]." wasn't stored - we better stop here", LOGGER_DEBUG);
return;
} elseif ($id[0]["pid"] != $mypid) {
logger("Queue item ".$r[0]["id"]." is to be executed by process ".$id[0]["pid"]." and not by me (".$mypid.") - skip this execution", LOGGER_DEBUG);
continue;
}
@ -111,15 +119,15 @@ function poller_run(&$argv, &$argc){
$funcname = str_replace(".php", "", basename($argv[0]))."_run";
if (function_exists($funcname)) {
logger("Process ".getmypid()." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." ".$r[0]["parameter"]);
logger("Process ".$mypid." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." ".$r[0]["parameter"]);
$funcname($argv, $argc);
if ($cooldown > 0) {
logger("Process ".getmypid()." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." - in cooldown for ".$cooldown." seconds");
logger("Process ".$mypid." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." - in cooldown for ".$cooldown." seconds");
sleep($cooldown);
}
logger("Process ".getmypid()." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." - done");
logger("Process ".$mypid." - Prio ".$r[0]["priority"]." - ID ".$r[0]["id"].": ".$funcname." - done");
q("DELETE FROM `workerqueue` WHERE `id` = %d", intval($r[0]["id"]));
} else
@ -319,9 +327,9 @@ function poller_too_much_workers() {
}
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]["workers"]);
return($workers[0]["processes"]);
}
if (array_search(__file__,get_included_files())===0){