/**
* starts worker
*/
public function run()
{
declare (ticks=1);
$this->startup();
$this->who = 'master:' . $this->workerName;
$this->logContext = ['type' => $this->who, 'job.identifier' => null];
$this->logger->info('{type}: Worker started', $this->logContext);
$this->logger->info('{type}: monitoring the following queues (in order), {queues}', ['type' => $this->who, 'queues' => implode(', ', $this->queues)]);
$did_work = false;
while (true) {
if ($this->shutdown) {
$this->logger->info('{type}: Shutting down', $this->logContext);
break;
}
while ($this->paused) {
usleep(250000);
}
if ($did_work) {
$this->logger->debug('{type}: Looking for work', $this->logContext);
$this->updateProcLine('Waiting for ' . implode(',', $this->queues) . ' with interval ' . $this->interval);
$did_work = false;
}
$job = $this->reserve();
if (!$job) {
if ($this->interval == 0) {
break;
}
usleep($this->interval * 1000000);
continue;
}
$this->job = $job;
$this->logContext['job.identifier'] = $job->getId();
// fork processes
$this->childStart();
$this->watchdogStart();
// Parent process, sit and wait
$proc_line = 'Forked ' . $this->childPID . ' at ' . strftime('%F %T');
$this->updateProcLine($proc_line);
$this->logger->info($proc_line, $this->logContext);
while ($this->childProcesses > 0) {
$status = null;
$pid = pcntl_wait($status, WUNTRACED);
if ($pid > 0) {
if ($pid === $this->childPID) {
$exited = $this->childProcessStatus($status);
} else {
if ($pid === $this->watchdogPID) {
$exited = $this->watchdogProcessStatus($status);
} else {
// unexpected?
$this->logger->info(sprintf("master received status for unknown PID %d; exiting\n", $pid));
exit(1);
}
}
if ($exited) {
--$this->childProcesses;
switch ($pid) {
case $this->childPID:
$this->childPID = null;
if ($this->watchdogPID) {
// shutdown watchdog immediately if child has exited
posix_kill($this->watchdogPID, SIGKILL);
}
break;
case $this->watchdogPID:
$this->watchdogPID = null;
break;
}
}
}
}
foreach ($this->sockets as $socket) {
socket_close($socket);
}
$this->sockets = [];
$this->job = null;
$this->logContext['job.identifier'] = null;
$did_work = true;
/**
* We need to reconnect due to bug in Redis library that always sends QUIT on destruction of \Redis
* rather than just leaving socket around. This call will sometimes generate a broken pipe notice
*/
$old = error_reporting();
error_reporting($old & ~E_NOTICE);
try {
$this->client->reconnect();
} finally {
error_reporting($old);
}
}
}
