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<?php |
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/* (c) Anton Medvedev <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Deployer\Task; |
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use Deployer\Configuration\Configuration; |
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use Deployer\Exception\Exception; |
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use Deployer\Host\Host; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Output\OutputInterface; |
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class Context |
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{ |
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/** |
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* @var Host |
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*/ |
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private $host; |
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/** |
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* @var InputInterface |
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*/ |
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private $input; |
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/** |
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* @var OutputInterface |
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*/ |
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private $output; |
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/** |
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* @var Context[] |
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*/ |
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private static $contexts = []; |
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/** |
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* @param Host $host |
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* @param InputInterface $input |
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* @param OutputInterface $output |
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*/ |
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public function __construct($host, InputInterface $input = null, OutputInterface $output = null) |
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{ |
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$this->host = $host; |
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$this->input = $input; |
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$this->output = $output; |
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} |
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/** |
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* @param Context $context |
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*/ |
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public static function push(Context $context) |
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{ |
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self::$contexts[] = $context; |
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} |
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/** |
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* @return bool |
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*/ |
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public static function has() |
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{ |
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return !empty(self::$contexts); |
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} |
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/** |
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* @return Context|false |
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* @throws Exception |
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*/ |
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public static function get() |
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{ |
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if (empty(self::$contexts)) { |
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throw new Exception('Context was required, but there\'s nothing there.'); |
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} |
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return end(self::$contexts); |
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} |
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/** |
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* @return Context |
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*/ |
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public static function pop() |
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{ |
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return array_pop(self::$contexts); |
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} |
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/** |
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* Throws a Exception when not called within a task-context and therefore no Context is available. |
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* |
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* This method provides a useful error to the end-user to make him/her aware |
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* to use a function in the required task-context. |
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* |
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* @param string $callerName |
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* @throws Exception |
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*/ |
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public static function required($callerName) |
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{ |
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if (empty(self::$contexts)) { |
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throw new Exception("'$callerName' can only be used within a task."); |
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} |
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} |
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/** |
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* @return Configuration |
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*/ |
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public function getConfig() |
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{ |
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return $this->host->config(); |
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} |
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/** |
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* @return InputInterface |
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*/ |
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public function getInput() |
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{ |
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return $this->input; |
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} |
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/** |
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* @return OutputInterface |
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*/ |
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public function getOutput() |
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{ |
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return $this->output; |
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} |
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/** |
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* @return Host |
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*/ |
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public function getHost() |
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{ |
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return $this->host; |
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} |
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} |
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deployphp /
deployer
