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<?php |
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/* |
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* This file is part of the Tidal/WampWatch package. |
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* (c) 2016 Timo Michna <timomichna/yahoo.de> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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*/ |
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namespace Tidal\WampWatch; |
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use Evenement\EventEmitterTrait; |
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use React\Promise\Promise; |
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use Tidal\WampWatch\ClientSessionInterface as ClientSession; |
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use Tidal\WampWatch\Subscription\Collection as SubscriptionCollection; |
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/** |
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* Description of MonitorTrait. |
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* |
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* @author Timo |
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*/ |
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trait MonitorTrait |
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{ |
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use EventEmitterTrait; |
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/** |
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* The monitor's WAMP client session. |
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* |
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* @var ClientSession |
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*/ |
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protected $session; |
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/** |
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* if the monitor is running. |
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* |
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* @var bool |
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*/ |
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protected $isRunning = false; |
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/** |
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* @var SubscriptionCollection |
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*/ |
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protected $subscriptionCollection; |
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/** |
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* @var string |
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*/ |
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protected $initialCallProcedure; |
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/** |
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* @var callable |
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*/ |
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protected $initialCallCallback; |
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/** |
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* @var bool |
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*/ |
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protected $initialCallDone = false; |
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/** |
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* @param ClientSession $session |
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*/ |
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protected function setClientSession(ClientSession $session) |
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{ |
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$this->session = $session; |
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} |
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/** |
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* Start the monitor. |
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* |
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* @return bool |
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*/ |
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public function start() |
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{ |
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$this->getSubscriptionCollection()->subscribe()->done(function () { |
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$this->checkStarted(); |
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}); |
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$this->callInitialProcedure()->done(function () { |
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$this->checkStarted(); |
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}); |
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return true; |
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} |
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/** |
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* Stop the monitor. |
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* Returns boolean if the monitor could be started. |
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* |
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* @return bool |
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*/ |
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public function stop() |
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{ |
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if (!$this->isRunning()) { |
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return false; |
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} |
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$this->getSubscriptionCollection()->unsubscribe(); |
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$this->isRunning = false; |
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$this->emit('stop', [$this]); |
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return true; |
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} |
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protected function getList() |
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{ |
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return []; |
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} |
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/** |
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* Get the monitor's WAMP client session. |
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* |
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* @return ClientSession |
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*/ |
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public function getServerSession() |
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{ |
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return $this->session; |
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} |
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/** |
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* Get the monitor's running state. |
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* |
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* @return bool |
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*/ |
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public function isRunning() |
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{ |
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return $this->isRunning; |
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} |
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/** |
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* @return \Tidal\WampWatch\Subscription\Collection |
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*/ |
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protected function getSubscriptionCollection() |
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{ |
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return isset($this->subscriptionCollection) |
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? $this->subscriptionCollection |
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: $this->subscriptionCollection = new SubscriptionCollection($this->session); |
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} |
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protected function setInitialCall($pocedure, callable $callback) |
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{ |
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$this->initialCallProcedure = (string) $pocedure; |
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$this->initialCallCallback = $callback; |
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} |
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/** |
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* @return \React\Promise\Promise |
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*/ |
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protected function callInitialProcedure() |
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{ |
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if (!isset($this->initialCallProcedure) || !isset($this->initialCallCallback)) { |
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$this->initialCallDone = true; |
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$resolver = function (callable $resolve) { |
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$resolve(); |
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}; |
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return new Promise($resolver); |
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} |
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return $this->session->call($this->initialCallProcedure, [])->then(function ($res) { |
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$this->initialCallDone = true; |
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$cb = $this->initialCallCallback; |
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$cb($res); |
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return $res; |
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}); |
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} |
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/** |
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* Checks if all necessary subscriptions and calls have been responded to. |
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*/ |
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protected function checkStarted() |
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{ |
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if ($this->isSubscribed() && |
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$this->initialCallDone && |
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!$this->isRunning() |
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) { |
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$this->isRunning = true; |
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$this->emit('start', [$this->getList()]); |
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} |
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} |
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protected function isSubscribed() |
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{ |
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if (!$this->getSubscriptionCollection()->hasSubscription()) { |
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return true; |
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} |
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return $this->getSubscriptionCollection()->isSubscribed(); |
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} |
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} |
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tidal /
WampWatch
