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<?php |
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declare(strict_types=1); |
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namespace unreal4u\MQTT\Internals; |
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use unreal4u\MQTT\Exceptions\InvalidResponseType; |
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use unreal4u\MQTT\Utilities; |
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/** |
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* Trait ReadableContent |
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* @package unreal4u\MQTT\Internals |
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*/ |
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trait ReadableContent |
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{ |
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/** |
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* Length of variable header |
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* @var int |
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*/ |
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protected $variableHeaderSize = 0; |
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final public function instantiateObject(string $rawMQTTHeaders, ClientInterface $client): bool |
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{ |
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//var_dump(base64_encode($rawMQTTHeaders)); // For now: make it a bit easier to create unit tests |
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$this->checkControlPacketValue(\ord($rawMQTTHeaders[0]) >> 4); |
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$this->fillObject($rawMQTTHeaders, $client); |
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return true; |
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} |
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/** |
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* Checks whether the control packet corresponds to this object |
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* |
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* @param int $controlPacketValue |
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* @return bool |
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* @throws \unreal4u\MQTT\Exceptions\InvalidResponseType |
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*/ |
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private function checkControlPacketValue(int $controlPacketValue): bool |
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{ |
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// Check whether the first byte corresponds to the expected control packet value |
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if (static::CONTROL_PACKET_VALUE !== $controlPacketValue) { |
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throw new InvalidResponseType(sprintf( |
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'Value of received value does not correspond to response (Expected: %d, Actual: %d)', |
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static::CONTROL_PACKET_VALUE, |
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$controlPacketValue |
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)); |
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} |
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return true; |
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} |
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/** |
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* All classes must implement how to handle the object filling |
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* @param string $rawMQTTHeaders |
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* @param ClientInterface $client |
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* @return ReadableContentInterface |
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*/ |
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abstract public function fillObject(string $rawMQTTHeaders, ClientInterface $client): ReadableContentInterface; |
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/** |
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* Any class can overwrite the default behaviour |
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* @param ClientInterface $client |
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* @param WritableContentInterface $originalRequest |
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* @return bool |
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*/ |
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public function performSpecialActions(ClientInterface $client, WritableContentInterface $originalRequest): bool |
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{ |
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return false; |
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} |
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} |
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unreal4u /
mqtt
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