/**
* @param ChannelInterface $channel
* @param string $name
* @param string|ProtocolInterface $message
* @param mixed[] $params
*/
public function __construct($channel, $name, $message, $params = [])
{
$this->channel = $channel;
$this->name = $name;
$this->message = $message instanceof ProtocolInterface ? $message : $this->channel->createProtocol($message);
$this->params = ['timeout' => isset($params['timeout']) ? $params['timeout'] : 2.0, 'retriesLimit' => isset($params['retriesLimit']) ? $params['retriesLimit'] : 10, 'retriesInterval' => isset($params['retriesInterval']) ? $params['retriesInterval'] : 0.25];
$this->counter = 1;
$this->message->setTimestamp(TimeSupport::now() + ($this->params['retriesInterval'] + $this->params['timeout']) * 1000.0 * $this->params['retriesLimit'], true);
}
/**
* 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 string $name
* @param ProtocolInterface $message
* @param int $flags
* @return bool
*/
protected function handleSendAsync($name, $message, $flags = Channel::MODE_DEFAULT)
{
if ($message->getType() === '') {
$message->setType(Channel::TYPE_SND);
}
if ($message->getDestination() === '') {
$message->setDestination($name);
}
return $this->getOutput()->handle($name, $message, $flags);
}
/**
* @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, $protocol->getOrigin());
}
/**
* @override
* @inheritDoc
*/
public function decode($str)
{
return $this->protocol->setAll($this->parser->decode($str));
}
/**
* @param string $exception
* @param ProtocolInterface $protocol
* @return bool
*/
public function __invoke($exception, ProtocolInterface $protocol)
{
return StringSupport::match($this->exception, $protocol->getException());
}
/**
* @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 $protocol
* @return bool
*/
protected function handleReceiveResponse(ProtocolInterface $protocol)
{
$pid = $protocol->getPid();
if (!$this->existsRequest($pid)) {
return false;
}
$message = $protocol->getMessage();
$exception = $protocol->getException();
if ($exception === '') {
$this->resolveRequest($pid, $message);
} else {
if ($exception === TaskIncompleteException::class) {
$this->cancelRequest($pid, new ThrowableProxy([$exception, $message]));
} else {
$this->rejectRequest($pid, new ThrowableProxy([$exception, $message]));
}
}
return true;
}
/**
* @param string $name
* @param ProtocolInterface $protocol
* @return bool
*/
public function __invoke($name, ProtocolInterface $protocol)
{
return $protocol->getPid() === $this->pid;
}
