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<?php |
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namespace DeltaBlue\Varnish; |
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class VarnishResponse |
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{ |
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/** |
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* Varnish return codes (from vcli.h) |
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* https://github.com/varnishcache/varnish-cache/blob/master/include/vcli.h#L42. |
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*/ |
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const VARN_SYNTAX = 100; |
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const VARN_UNKNOWN = 101; |
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const VARN_UNIMPL = 102; |
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const VARN_TOOFEW = 104; |
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const VARN_TOOMANY = 105; |
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const VARN_PARAM = 106; |
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const VARN_AUTH = 107; |
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const VARN_OK = 200; |
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const VARN_TRUNCATED = 201; |
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const VARN_CANT = 300; |
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const VARN_COMMS = 400; |
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const VARN_CLOSE = 500; |
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/** |
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* Varnish control command contains the status code and content length |
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* e.g. 107 59. |
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*/ |
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const CONTROL_COMMAND_REGEX = '/^(\d{3}) (\d+)/'; |
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/** |
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* Authentication challenge length. |
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*/ |
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const CHALLENGE_LENGTH = 32; |
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/** |
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* @var int: The varnish return code |
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*/ |
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private $code = null; |
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/** |
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* @var int: The length of the following content |
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*/ |
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private $length = null; |
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/** |
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* @var string: The actual content of the response |
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*/ |
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private $content = ''; |
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/** |
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* @return int |
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*/ |
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public function getCode() |
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{ |
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return $this->code; |
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} |
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/** |
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* @param int $code |
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*/ |
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public function setCode($code) |
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{ |
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$this->code = $code; |
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} |
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/** |
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* @return int |
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*/ |
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public function getLength() |
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{ |
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return $this->length; |
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} |
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/** |
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* @param int $length |
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*/ |
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public function setLength($length) |
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{ |
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$this->length = $length; |
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} |
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/** |
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* @return string |
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*/ |
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public function getContent(): string |
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{ |
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return $this->content; |
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} |
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/** |
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* @param string $content |
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*/ |
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public function setContent(string $content) |
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{ |
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$this->content = $content; |
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} |
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public function appendContent(string $content) |
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{ |
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$this->content .= $content; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isAuthRequest() |
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{ |
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return $this->getCode() === VarnishResponse::VARN_AUTH; |
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} |
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/** |
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* @return string |
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*/ |
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public function getAuthChallenge() |
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{ |
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$challenge = substr($this->content, 0, self::CHALLENGE_LENGTH); |
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if ($challenge === false) { |
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$challenge = ''; |
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} |
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return $challenge; |
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} |
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/** |
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* @param $chunk |
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* @return bool |
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*/ |
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public function parseControlCommand($chunk) |
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{ |
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// Varnish will output a code and a content length, followed by the actual content |
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if (preg_match(self::CONTROL_COMMAND_REGEX, $chunk, $match)) { |
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$this->setCode((int) $match[1]); |
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$this->setLength((int) $match[2]); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @return bool |
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*/ |
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public function hasLength() |
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{ |
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return $this->getLength() !== null; |
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} |
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/** |
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* @return bool |
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*/ |
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public function contentLengthReached() |
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{ |
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return strlen($this->getContent()) >= $this->getLength(); |
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} |
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/* |
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* @return bool |
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*/ |
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public function finishedReading() |
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{ |
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return $this->hasLength() && $this->contentLengthReached(); |
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} |
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} |
deltablue-cloud /
laravel-varnish
