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<?php |
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namespace Cassandra\Connection; |
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class Stream { |
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/** |
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* @var resource |
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*/ |
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protected $_stream; |
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/** |
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* @var array |
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*/ |
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protected $_options = [ |
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'host' => null, |
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'port' => 9042, |
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'username' => null, |
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'password' => null, |
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'timeout' => 30, |
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'connectTimeout'=>5, |
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'persistent'=> false, |
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]; |
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/** |
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* @param array $options |
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*/ |
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public function __construct(array $options) { |
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$this->_options = array_merge($this->_options, $options); |
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$this->_connect(); |
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} |
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/** |
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* |
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* @throws StreamException |
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* @return resource |
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*/ |
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protected function _connect() { |
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if (!empty($this->_stream)) return $this->_stream; |
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$this->_stream = $this->_options['persistent'] |
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? pfsockopen($this->_options['host'], $this->_options['port'], $errorCode, $errorMessage, $this->_options['connectTimeout']) |
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: fsockopen($this->_options['host'], $this->_options['port'], $errorCode, $errorMessage, $this->_options['connectTimeout']); |
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if ($this->_stream === false){ |
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throw new StreamException($errorMessage, $errorCode); |
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} |
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stream_set_timeout($this->_stream,$this->_options['timeout']); |
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} |
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/** |
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* @return array |
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*/ |
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public function getOptions() { |
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return $this->_options; |
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} |
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/** |
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* @param $length |
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* @throws StreamException |
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* @return string |
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*/ |
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public function read($length) { |
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$data = ''; |
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do{ |
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$readData = fread($this->_stream, $length); |
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if (feof($this->_stream)) |
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throw new StreamException('Connection reset by peer'); |
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if (stream_get_meta_data($this->_stream)['timed_out']) |
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throw new StreamException('Connection timed out'); |
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if (strlen($readData) == 0) |
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throw new StreamException("Unknown error"); |
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$data .= $readData; |
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$length -= strlen($readData); |
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} |
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while($length > 0); |
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return $data; |
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} |
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/** |
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* @param $length |
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* @throws StreamException |
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* @return string |
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*/ |
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public function readOnce($length){ |
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$readData = fread($this->_stream, $length); |
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if (feof($this->_stream)) |
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throw new StreamException('Connection reset by peer'); |
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if (stream_get_meta_data($this->_stream)['timed_out']) |
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throw new StreamException('Connection timed out'); |
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if (strlen($readData) == 0) |
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throw new StreamException("Unknown error"); |
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return $readData; |
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} |
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106
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/** |
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* |
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108
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* @param string $binary |
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109
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* @throws StreamException |
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*/ |
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public function write($binary){ |
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do{ |
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$sentBytes = fwrite($this->_stream, $binary); |
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115
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if (feof($this->_stream)) |
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throw new StreamException('Connection reset by peer'); |
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118
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if (stream_get_meta_data($this->_stream)['timed_out']) |
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throw new StreamException('Connection timed out'); |
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121
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if ($sentBytes == 0) |
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throw new StreamException("Uknown error"); |
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$binary = substr($binary, $sentBytes); |
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} |
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while(!empty($binary)); |
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} |
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129
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public function close(){ |
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fclose($this->_stream); |
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131
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} |
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132
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} |
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133
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duoshuo /
php-cassandra
