/**
* Send the request using passed Promise.
*
* @param PromiseInterface $promise
* @return PromiseInterface
* @resolves mixed
* @rejects Error|Exception|string|null
* @cancels Error|Exception|string|null
*/
protected function send(PromiseInterface $promise)
{
$pid = $this->protocol->getPid();
$origin = $this->protocol->getOrigin();
$message = $this->message;
$channel = $this->channel;
if ($message instanceof Error || $message instanceof Exception) {
$answer = $channel->createProtocol($message->getMessage())->setPid($pid, true)->setException(get_class($message), true);
} else {
$answer = $channel->createProtocol($message)->setPid($pid, true);
}
$this->channel->send($origin, $answer, Channel::MODE_BUFFER_ONLINE);
return $promise->resolve();
}
/**
* @param RuntimeContainerInterface $runtime
* @param ChannelCompositeInterface $composite
* @param ProtocolInterface $protocol
*/
private function executeProtocol(RuntimeContainerInterface $runtime, ChannelCompositeInterface $composite, ProtocolInterface $protocol)
{
/**
* If the json_decode fails, it means the received message is leftover of request response,
* hence it should be dropped.
*/
try {
$params = json_decode($protocol->getMessage(), true);
$command = array_shift($params);
$params['origin'] = $protocol->getOrigin();
if (!$runtime->isFailed() || isset($params['hash']) && $runtime->getHash() === $params['hash']) {
$promise = $this->executeCommand($command, $params);
} else {
$promise = Promise::doReject(new RejectionException('Container is currently in failed state and cannot execute any tasks.'));
}
if ($protocol->getType() === Channel::TYPE_REQ) {
$promise->then(function ($response) use($composite, $protocol, $command) {
return (new Response($composite, $protocol, $response))->call();
}, function ($reason) use($composite, $protocol) {
return (new Response($composite, $protocol, $reason))->call();
}, function ($reason) use($composite, $protocol) {
return (new Response($composite, $protocol, $reason))->call();
});
}
} catch (Error $ex) {
return;
} catch (Exception $ex) {
return;
}
}
/**
* @param string $name
* @param ProtocolInterface $protocol
* @return bool
*/
public function __invoke($name, ProtocolInterface $protocol)
{
return StringSupport::match($this->name, $protocol->getOrigin());
}
/**
* @param ChannelCompositeInterface $composite
* @param ProtocolInterface $protocol
*/
private function executeProtocol(ChannelCompositeInterface $composite, ProtocolInterface $protocol)
{
$params = json_decode($protocol->getMessage(), true);
$command = array_shift($params);
$params['origin'] = $protocol->getOrigin();
$promise = $this->executeCommand($command, $params);
if ($protocol->getType() === Channel::TYPE_REQ) {
$promise->then(function ($response) use($composite, $protocol, $command) {
return (new Response($composite, $protocol, $response))->call();
}, function ($reason) use($composite, $protocol) {
return (new Response($composite, $protocol, $reason))->call();
}, function ($reason) use($composite, $protocol) {
return (new Response($composite, $protocol, $reason))->call();
});
}
}
/**
* @param ProtocolInterface
* @return bool
*/
protected function handleReceiveRequest(ProtocolInterface $protocol)
{
if ($protocol->getType() === Channel::TYPE_REQ && $protocol->getDestination() === $this->name) {
$pid = $protocol->getPid();
$timestamp = $protocol->getTimestamp();
$now = $this->getTime();
if ($timestamp <= $now || $this->existsResponse($pid)) {
return true;
}
$timestamp -= 5000.0;
$this->addResponse($pid, $this->createResponse($pid, $protocol->getOrigin(), $timestamp, $timestamp - $now));
}
return false;
}
