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<?php |
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/** |
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* \AppserverIo\Appserver\Core\Utilities\AppEnvironmentHelper |
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* |
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* NOTICE OF LICENSE |
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* |
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* This source file is subject to the Open Software License (OSL 3.0) |
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* that is available through the world-wide-web at this URL: |
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* http://opensource.org/licenses/osl-3.0.php |
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* |
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* PHP version 5 |
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* |
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* @author Bernhard Wick <[email protected]> |
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* @author Hans Höchtl <[email protected]> |
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* @copyright 2016 TechDivision GmbH <[email protected]> |
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) |
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* @link https://github.com/appserver-io/appserver |
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* @link http://www.appserver.io |
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*/ |
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namespace AppserverIo\Appserver\Core\Utilities; |
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use AppserverIo\Properties\Properties; |
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/** |
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* Helper which provides static methods for handling different application environment settings |
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* |
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* @author Bernhard Wick <[email protected]> |
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* @author Hans Höchtl <[email protected]> |
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* @copyright 2016 TechDivision GmbH <[email protected]> |
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) |
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* @link https://github.com/appserver-io/appserver |
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* @link http://www.appserver.io |
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*/ |
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class AppEnvironmentHelper |
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{ |
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/** |
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* Returns the name of the configuration file |
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* |
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* @var string CONFIGURATION_FILE |
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*/ |
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const CONFIGURATION_FILE = 'build.properties'; |
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/** |
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* Cached configuration properties |
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* |
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* @var \AppserverIo\Properties\Properties $cachedProperties |
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*/ |
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protected static $cachedProperties; |
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/** |
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* Get the environment modifier (if any) which helps to switch the configuration environment |
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* |
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* @param string $appBase The base of the application we are dealing with |
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* |
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* @return string |
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* |
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* @throws \AppserverIo\Properties\PropertyFileNotFoundException |
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* @throws \AppserverIo\Properties\PropertyFileParseException |
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*/ |
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public static function getEnvironmentModifier($appBase) |
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{ |
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// check if we got the properties cached already, if not load them anew |
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$properties = null; |
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if (!is_null(self::$cachedProperties)) { |
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$properties = self::$cachedProperties; |
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} else { |
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// load the properties from file |
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$propertiesFile = DirectoryKeys::realpath( |
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sprintf('%s/%s', $appBase, self::CONFIGURATION_FILE) |
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); |
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// load the properties from the configuration file |
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if (file_exists($propertiesFile)) { |
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$properties = Properties::create()->load($propertiesFile); |
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} |
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} |
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// load the properties from the configuration file |
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$result = ''; |
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// get the actual property if it exists |
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if (!is_null($properties) && $properties->exists(ConfigurationKeys::APP_ENVIRONMENT)) { |
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$result = $properties->get(ConfigurationKeys::APP_ENVIRONMENT); |
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} |
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// ENV variable always wins |
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if (defined(ConfigurationKeys::APP_ENVIRONMENT)) { |
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$result = getenv(ConfigurationKeys::APP_ENVIRONMENT); |
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} |
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return $result; |
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} |
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/** |
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* Will take a segmented path to a file (which might contain glob type wildcards) and return it fixed to the currently active environment modifier. |
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* E.g. |
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* AppEnvironmentHelper::getEnvironmentAwareFilePath('webapps/example', 'META-INF/*-ds') => 'webapps/example/META-INF/*-ds.dev.xml' |
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* |
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* @param string $appBase The base file path to the application |
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* @param string $fileGlob The intermediate path (or glob pattern) from app base path to file extension |
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* @param integer $flags The flags passed to the glob function |
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* @param string $fileExtension The extension of the file, will default to 'xml' |
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* |
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* @return string |
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*/ |
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public static function getEnvironmentAwareGlobPattern($appBase, $fileGlob, $flags = 0, $fileExtension = 'xml') |
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{ |
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// get the file path modifier |
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$modifier = static::getEnvironmentModifier($appBase); |
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// as we default to a not modified path we have to be careful about the "two dots" schema .$modifier.$extension |
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$defaultFilePath = $appBase . DIRECTORY_SEPARATOR . $fileGlob . '.' . $fileExtension; |
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if (empty($modifier)) { |
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// if we do not have a modifier we do not need to act upon anything, so we return the default |
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return $defaultFilePath; |
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} else { |
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// we got a modifier we have to check if there is something reachable under the modified path, if not we will also return the default |
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$modifiedPath = $appBase . DIRECTORY_SEPARATOR . $fileGlob . '.' . $modifier . '.' . $fileExtension; |
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$potentialFiles = static::globDir($modifiedPath, $flags); |
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if (!empty($potentialFiles)) { |
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return $modifiedPath; |
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} |
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return $defaultFilePath; |
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} |
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} |
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/** |
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* Parses and returns the directories and files that matches |
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* the passed glob pattern in a recursive way (if wanted). |
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* |
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* @param string $pattern The glob pattern used to parse the directories |
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* @param integer $flags The flags passed to the glob function |
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* @param boolean $recursive Whether or not to parse directories recursively |
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* |
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* @return array The directories matches the passed glob pattern |
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* @link http://php.net/glob |
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*/ |
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protected static function globDir($pattern, $flags = 0, $recursive = true) |
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{ |
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return FileSystem::globDir($pattern, $flags, $recursive); |
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} |
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} |
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