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<?php |
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/** |
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* Dead simple, high performance, drop-in bridge to Golang RPC with zero dependencies |
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* |
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* @author Wolfy-J |
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*/ |
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namespace Spiral\Goridge; |
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use Spiral\Goridge\RelayInterface as Relay; |
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/** |
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* RPC bridge to Golang net/rpc package over Goridge protocol. |
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*/ |
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class RPC |
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{ |
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/** @var Relay */ |
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private $relay; |
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/** |
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* @param Relay $relay |
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*/ |
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public function __construct(Relay $relay) |
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{ |
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$this->relay = $relay; |
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} |
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/** |
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* @param string $method |
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* @param mixed $payload An binary data or array of arguments for complex types. |
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* @param int $flags Payload control flags. |
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* |
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* @return mixed |
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* |
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* @throws Exceptions\RelayException |
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* @throws Exceptions\ServiceException |
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*/ |
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public function call(string $method, $payload, int $flags = 0) |
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{ |
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$this->relay->send($method, Relay::PAYLOAD_CONTROL | Relay::PAYLOAD_RAW); |
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if ($flags & Relay::PAYLOAD_RAW) { |
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$this->relay->send($payload, $flags); |
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} else { |
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$body = json_encode($payload); |
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if ($body === false) { |
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throw new Exceptions\ServiceException(sprintf("json encode: %s", json_last_error_msg())); |
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} |
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$this->relay->send($body); |
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} |
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// wait for the response |
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$body = $this->relay->receiveSync($flags); |
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return $this->handleBody($body, $flags); |
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} |
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/** |
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* Handle response body. |
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* |
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* @param string $body |
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* @param int $flags |
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* |
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* @return mixed |
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* |
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* @throws Exceptions\ServiceException |
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*/ |
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protected function handleBody($body, int $flags) |
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{ |
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if ($flags & Relay::PAYLOAD_ERROR && $flags & Relay::PAYLOAD_RAW) { |
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throw new Exceptions\ServiceException("error '$body' on '{$this->relay}'"); |
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} |
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if ($flags & Relay::PAYLOAD_RAW) { |
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return $body; |
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} |
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return json_decode($body, true); |
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} |
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} |