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<?php |
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namespace Monitor\Config; |
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use Monitor\Contract\Config\ConfigInterface; |
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class ConfigJson implements ConfigInterface |
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{ |
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/** |
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* Config data |
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* @var array |
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*/ |
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private $data; |
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/** |
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* Load default config values before retrieve from file |
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* |
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* @param $filename |
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* @param array $configValues |
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*/ |
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public function __construct($filename = null, array $configValues = []) |
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{ |
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$this->data = $configValues; |
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if ($filename) { |
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$this->loadFromFile($filename); |
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} |
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} |
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/** |
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* Load config from file |
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* |
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* @param string filename |
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*/ |
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private function loadFromFile($filename) |
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{ |
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$fullPath = $this->getFullPath($filename); |
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$this->isFileReadable($fullPath); |
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$configData = file_get_contents($fullPath); |
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$this->data = $this->decode($configData); |
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} |
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/** |
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* Get config value by key |
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* |
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* @param mixed $name |
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* @param mixed $default |
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*/ |
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public function get($name, $default = null) |
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{ |
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if (isset($this->data[$name]) |
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|| $default) { |
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return isset($this->data[$name]) ? $this->data[$name] : $default; |
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} |
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throw new \Exception($name.' not found in config'); |
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} |
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/** |
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* Get full path of config |
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* |
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* @param string $filename |
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*/ |
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private function getFullPath($filename) |
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{ |
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$fullPath = __DIR__.'/../'.$filename; |
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return $fullPath; |
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} |
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/** |
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* Decode json string to array |
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* |
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* @param $data |
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* @return array $decodedData |
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*/ |
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private function decode($data) |
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{ |
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$decodedData = json_decode($data, true); |
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if (json_last_error() !== JSON_ERROR_NONE) { |
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throw new \Exception('Can\'t parse config'); |
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} |
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return (array) $decodedData; |
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} |
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/** |
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* Check if config file is readable |
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* |
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* @param fullPath |
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* @throws \Exception |
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*/ |
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private function isFileReadable($fullPath) |
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{ |
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if (! is_readable($fullPath)) { |
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throw new \Exception('Config is not readable'); |
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} |
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} |
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} |
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phaniso /
phpmonitor
