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<?php |
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use \SilverStripe\Platform\Core\Rainforest\Anthill; |
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use \SilverStripe\Platform\Core\Rainforest; |
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abstract class DeploynautJob implements DeploynautJobInterface { |
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/** |
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* @var array |
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*/ |
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public $args; |
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abstract protected function updateStatus($status); |
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/** |
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* Poll the sigFile looking for a signal to self-deliver. |
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* This is useful if we don't know the PID of the worker - we can easily deliver signals |
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* if we only know the ClassName and ID of the DataObject. |
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*/ |
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public function alarmHandler() { |
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$sigFile = $this->args['sigFile']; |
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if (file_exists($sigFile) && is_readable($sigFile) && is_writable($sigFile)) { |
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$signal = (int)file_get_contents($sigFile); |
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if (is_int($signal) && in_array((int)$signal, [ |
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// The following signals are trapped by both Resque and Rainforest. |
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SIGTERM, |
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SIGINT, |
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SIGQUIT, |
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// The following are Resque only. |
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SIGUSR1, |
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SIGUSR2, |
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SIGCONT |
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])) { |
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echo sprintf( |
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'[-] Signal "%s" received, delivering to own process group, PID "%s".' . PHP_EOL, |
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$signal, |
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getmypid() |
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); |
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// Mark the signal as received. |
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unlink($sigFile); |
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// Dispatch to own process group. |
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$pgid = posix_getpgid(getmypid()); |
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if ($pgid<=0) { |
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echo sprintf( |
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'[-] Unable to send signal to invalid PGID "%s".' . PHP_EOL, |
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$pgid |
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); |
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} else { |
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posix_kill(-$pgid, $signal); |
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} |
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} |
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} |
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// Wake up again soon. |
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pcntl_alarm(1); |
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} |
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public function setUp() { |
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// Make this process a session leader so we can send signals |
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// to this job as a whole (including any subprocesses such as spawned by Symfony). |
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posix_setsid(); |
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if(function_exists('pcntl_alarm') && function_exists('pcntl_signal')) { |
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if (!empty($this->args['sigFile'])) { |
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echo sprintf('[-] Signal file requested, polling "%s".' . PHP_EOL, $this->args['sigFile']); |
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declare(ticks = 1); |
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pcntl_signal(SIGALRM, [$this, 'alarmHandler']); |
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pcntl_alarm(1); |
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} |
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} |
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chdir(BASE_PATH); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function onFailure(Exception $exception) { |
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$this->updateStatus('Failed'); |
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} |
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public function runOp($opName, Anthill\Interfaces\Params $params, \Psr\Log\LoggerInterface $logger = null) { |
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if (!$logger) { |
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$logger = new \Psr\Log\NullLogger; |
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} |
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$container = Anthill\Anthill::bootstrap( |
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// For now only operations that don't use the ClientFactory are supported. |
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// This would ideally support passing platform-agnostic credentials so we could |
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// support both capistrano and aws. |
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null, |
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$logger |
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); |
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$factory = $container->get('SilverStripe\Platform\Core\Rainforest\Anthill\RunnerFactory'); |
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$runner = $factory->getDefault($opName, $params); |
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$runner->execute(); |
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return $runner; |
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} |
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} |
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silverstripe /
deploynaut
