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<?php |
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namespace PHPDaemon\Clients\Gibson; |
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use PHPDaemon\Network\ClientConnection; |
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use PHPDaemon\Utils\Binary; |
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/** |
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* Class Connection |
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*/ |
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class Connection extends ClientConnection |
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{ |
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/** |
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* Generic error while executing the query. |
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*/ |
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const REPL_ERR = 0x00; |
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/** |
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* Specified key was not found. |
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*/ |
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const REPL_ERR_NOT_FOUND = 0x01; |
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/** |
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* Expected a number ( TTL or TIME ) but the specified value was invalid. |
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*/ |
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const REPL_ERR_NAN = 0x02; |
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/** |
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* The server reached configuration memory limit and will not accept any new value until its freeing routine will be executed. |
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*/ |
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const REPL_ERR_MEM = 0x03; |
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/** |
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* The specificed key was locked by a OP_LOCK or a OP_MLOCK query. |
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*/ |
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const REPL_ERR_LOCKED = 0x04; |
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/** |
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* Query succesfully executed, no data follows. |
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*/ |
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const REPL_OK = 0x05; |
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/** |
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* Query succesfully executed, value data follows. |
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*/ |
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const REPL_VAL = 0x06; |
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/** |
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* Query succesfully executed, multiple key => value data follows. |
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*/ |
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const REPL_KVAL = 0x07; |
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const STATE_PACKET_HDR = 0x01; |
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const STATE_PACKET_DATA = 0x02; |
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/** |
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* Raw string data follows. |
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*/ |
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const GB_ENC_PLAIN = 0x00; |
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/** |
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* Compressed data, this is a reserved value not used for replies. |
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*/ |
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const GB_ENC_LZF = 0x01; |
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/** |
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* Packed long number follows, four bytes for 32bit architectures, eight bytes for 64bit. |
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*/ |
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const GB_ENC_NUMBER = 0x02; |
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/** |
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* @var string error message |
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*/ |
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public $error; |
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public $responseCode; |
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public $encoding; |
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public $responseLength; |
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public $result; |
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public $isFinal = false; |
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public $totalNum; |
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public $readedNum; |
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/** |
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* @var integer Default low mark. Minimum number of bytes in buffer |
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*/ |
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protected $lowMark = 2; |
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protected $maxQueue = 10; |
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/** |
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* Called when the connection is handshaked (at low-level), and peer is ready to recv. data |
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* @return void |
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*/ |
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public function onReady() |
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{ |
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parent::onReady(); |
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$this->setWatermark(null, $this->pool->maxAllowedPacket); |
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} |
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/** |
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* @TODO isFinal |
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* @return boolean |
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*/ |
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public function isFinal() |
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{ |
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return $this->isFinal; |
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} |
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/** |
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* @TODO getTotalNum |
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* @return integer |
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*/ |
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public function getTotalNum() |
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{ |
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return $this->totalNum; |
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} |
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/** |
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* @TODO getReadedNum |
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* @return integer |
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*/ |
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public function getReadedNum() |
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{ |
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return $this->readedNum; |
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} |
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/** |
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* @TODO getResponseCode |
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* @return integer |
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*/ |
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public function getResponseCode() |
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{ |
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return $this->responseCode; |
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} |
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/** |
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* onRead |
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* @return void |
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*/ |
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protected function onRead() |
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{ |
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start: |
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if ($this->state === static::STATE_STANDBY) { |
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if (($hdr = $this->readExact(2)) === false) { |
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return; // not enough data |
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} |
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$u = unpack('S', $hdr); |
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$this->responseCode = $u[1]; |
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$this->state = static::STATE_PACKET_HDR; |
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} |
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if ($this->state === static::STATE_PACKET_HDR) { |
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if ($this->responseCode === static::REPL_KVAL) { |
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$this->result = []; |
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if (($hdr = $this->readExact(9)) === false) { |
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return; // not enough data |
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} |
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$this->encoding = Binary::getByte($hdr); |
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$this->responseLength = Binary::getDword($hdr, true) - 4; |
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$this->totalNum = Binary::getDword($hdr, true); |
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$this->readedNum = 0; |
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$this->state = static::STATE_PACKET_DATA; |
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} else { |
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if (($hdr = $this->lookExact(5)) === false) { |
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return; // not enough data |
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} |
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$this->encoding = Binary::getByte($hdr); |
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$pl = Binary::getDword($hdr, true); |
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if ($this->getInputLength() < 5 + $pl) { |
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return; // not enough data |
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} |
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$this->drain(5); |
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$this->responseLength = $pl; |
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if ($this->responseLength > $this->pool->maxAllowedPacket) { |
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$this->log('max-allowed-packet (' . $this->pool->config->maxallowedpacket->getHumanValue() . ') exceed, aborting connection'); |
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$this->finish(); |
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return; |
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} |
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if ($this->responseCode === static::REPL_ERR_NOT_FOUND) { |
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$this->drain($this->responseLength); |
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$this->result = null; |
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$this->isFinal = true; |
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$this->totalNum = 0; |
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$this->readedNum = 0; |
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$this->executeCb(); |
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} elseif ($this->responseCode === static::REPL_OK) { |
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$this->drain($this->responseLength); |
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$this->result = true; |
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$this->isFinal = true; |
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$this->totalNum = 0; |
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$this->readedNum = 0; |
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$this->executeCb(); |
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} elseif (($this->responseCode === static::REPL_ERR_MEM) || |
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($this->responseCode === static::REPL_ERR_NAN) || |
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($this->responseCode === static::REPL_ERR_LOCKED) |
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) { |
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$this->drain($this->responseLength); |
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$this->result = false; |
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$this->isFinal = true; |
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$this->totalNum = 0; |
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$this->readedNum = 0; |
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$this->executeCb(); |
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} else { |
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if ($this->responseCode === static::REPL_KVAL && $this->totalNum <= 0) { |
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$this->drain($this->responseLength); |
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$this->isFinal = true; |
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$this->totalNum = 0; |
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$this->readedNum = 0; |
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$this->result = []; |
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$this->executeCb(); |
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} else { |
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$this->state = static::STATE_PACKET_DATA; |
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} |
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} |
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} |
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} |
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if ($this->state === static::STATE_PACKET_DATA) { |
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if ($this->responseCode === static::REPL_KVAL) { |
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$keyAdded = false; |
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nextElement: |
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$l = $this->getInputLength(); |
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if ($l < 9) { |
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goto cursorCall; |
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} |
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if (($hdr = $this->lookExact($o = 4)) === false) { |
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goto cursorCall; |
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} |
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$keyLen = Binary::getDword($hdr, true); |
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if (($key = $this->lookExact($keyLen, $o)) === false) { |
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goto cursorCall; |
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} |
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$o += $keyLen; |
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if (($encoding = $this->lookExact(1, $o)) === false) { |
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goto cursorCall; |
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} |
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$encoding = ord($encoding); |
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++$o; |
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if (($hdr = $this->lookExact(4, $o)) === false) { |
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goto cursorCall; |
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} |
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$o += 4; |
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$valLen = Binary::getDword($hdr, true); |
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if ($o + $valLen > $l) { |
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goto cursorCall; |
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} |
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$this->drain($o); |
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if ($encoding === static::GB_ENC_NUMBER) { |
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$val = $this->read($valLen); |
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$this->result[$key] = $valLen === 8 |
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? Binary::getQword($val, true) |
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: Binary::getDword($val, true); |
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} else { |
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$this->result[$key] = $this->read($valLen); |
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} |
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$keyAdded = true; |
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if (++$this->readedNum >= $this->totalNum) { |
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$this->isFinal = true; |
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$this->executeCb(); |
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goto start; |
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} else { |
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goto nextElement; |
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} |
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cursorCall: |
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if ($keyAdded) { |
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$this->onResponse->executeAndKeepOne($this); |
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} |
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return; |
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} else { |
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if (($this->result = $this->readExact($this->responseLength)) === false) { |
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$this->setWatermark($this->responseLength); |
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return; |
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} |
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$this->setWatermark(2, $this->pool->maxAllowedPacket); |
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if ($this->encoding === static::GB_ENC_NUMBER) { |
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$this->result = $this->responseLength === 8 |
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? Binary::getQword($this->result, true) |
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: Binary::getDword($this->result, true); |
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} |
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$this->isFinal = true; |
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$this->totalNum = 1; |
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$this->readedNum = 1; |
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$this->executeCb(); |
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} |
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} |
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goto start; |
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} |
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273
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/** |
274
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* @TODO executeCb |
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* @return void |
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*/ |
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protected function executeCb() |
278
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{ |
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$this->state = static::STATE_STANDBY; |
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$this->onResponse->executeOne($this); |
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$this->encoding = null; |
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$this->responseLength = null; |
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$this->result = null; |
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$this->totalNum = null; |
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$this->readedNum = null; |
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$this->isFinal = false; |
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$this->checkFree(); |
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} |
289
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} |
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Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line.