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<?php |
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/* |
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* This file is part of the phpflo\phpflo-fbp package. |
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* |
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* (c) Marc Aschmann <[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 PhpFlo\Fbp; |
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use PhpFlo\Common\FbpDefinitionsInterface; |
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use PhpFlo\Exception\DumperException; |
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use Symfony\Component\Yaml\Yaml; |
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/** |
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* Class FbpDumper |
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* |
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* @package PhpFlo\Fbp |
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* @author Marc Aschmann <[email protected]> |
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*/ |
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final class FbpDumper implements FbpDefinitionsInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private static $processes; |
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/** |
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* @param array $definition |
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* @return string json |
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*/ |
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public static function toJson(array $definition) |
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{ |
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return json_encode($definition, JSON_PRETTY_PRINT); |
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} |
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/** |
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* @param array $definition |
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* @param int $inline level until inlining starts |
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* @return string yaml |
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*/ |
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public static function toYaml(array $definition, $inline = 3) |
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{ |
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return Yaml::dump($definition, $inline); |
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} |
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/** |
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* @param array $definition |
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* @return string |
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*/ |
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public static function toFbp(array $definition) |
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{ |
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return self::createFbp($definition); |
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} |
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/** |
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* @param array $definition |
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* @return string |
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*/ |
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private static function createFbp(array $definition) |
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{ |
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$fbp = []; |
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// handle initializer |
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if (!empty($definition[self::INITIALIZERS_LABEL])) { |
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View Code Duplication |
if (empty($definition[self::INITIALIZERS_LABEL][self::DATA_LABEL])) { |
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throw new DumperException("Defintion has " . |
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self::INITIALIZERS_LABEL . " but no |
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" . self::DATA_LABEL . " node" |
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); |
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} |
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View Code Duplication |
if (empty($definition[self::INITIALIZERS_LABEL][self::TARGET_LABEL])) { |
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throw new DumperException("Defintion has " . |
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self::INITIALIZERS_LABEL . " but no |
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" . self::TARGET_LABEL . " node" |
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); |
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} |
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array_push( |
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$fbp, |
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self::connectPorts( |
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$definition[self::INITIALIZERS_LABEL][self::DATA_LABEL], |
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self::examineProcess(self::TARGET_LABEL, $definition[self::INITIALIZERS_LABEL][self::TARGET_LABEL]) |
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) |
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); |
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} |
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if (self::hasElement(self::PROCESSES_LABEL, $definition)) { |
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self::$processes = $definition[self::PROCESSES_LABEL]; |
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} |
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foreach ($definition[self::CONNECTIONS_LABEL] as $connection) { |
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array_push($fbp, self::examineConnectionTouple($connection)); |
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} |
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return implode(self::FILE_LINEFEED, $fbp); |
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} |
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/** |
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* Look for all needed fields and build a port -> port connection. |
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* |
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* @param array $connectionTouple |
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* @return string |
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*/ |
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private static function examineConnectionTouple(array $connectionTouple) |
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{ |
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self::hasElement(self::SOURCE_LABEL, $connectionTouple); |
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self::hasElement(self::TARGET_LABEL, $connectionTouple); |
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return self::connectPorts( |
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self::examineProcess(self::SOURCE_LABEL, $connectionTouple[self::SOURCE_LABEL]), |
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self::examineProcess(self::TARGET_LABEL, $connectionTouple[self::TARGET_LABEL]) |
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); |
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} |
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/** |
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* @param string $type |
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* @param array $processPart |
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* @return string |
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*/ |
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private static function examineProcess($type, array $processPart) |
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{ |
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self::hasElement(self::PROCESS_LABEL, $processPart); |
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self::hasElement(self::PORT_LABEL, $processPart); |
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$inport = ''; |
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$outport = ''; |
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$process = $processPart[self::PROCESS_LABEL]; |
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$port = $processPart[self::PORT_LABEL]; |
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if (self::hasElement($process, self::$processes, false)) { |
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$meta = "(" . self::$processes[$process][self::COMPONENT_LABEL] . ")"; |
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} else { |
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throw new DumperException("{$process} is not defined in " . self::PROCESSES_LABEL); |
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} |
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if (self::SOURCE_LABEL == $type) { |
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$outport = " {$port}"; |
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} else { |
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$inport = "{$port} "; |
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} |
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return "{$inport}{$process}{$meta}{$outport}"; |
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} |
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/** |
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* @param string $needle |
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* @param array $haystack |
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* @param bool $triggerException |
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* @return bool |
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*/ |
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private static function hasElement($needle, array $haystack, $triggerException = true) |
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{ |
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if (empty($haystack[$needle])) { |
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if ($triggerException) { |
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throw new DumperException("Element has no {$needle}"); |
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} else { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* @param string $sourcePort |
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* @param string $targetPort |
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* @return string |
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*/ |
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private static function connectPorts($sourcePort, $targetPort) |
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{ |
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return implode( |
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" " . self::SOURCE_TARGET_SEPARATOR . " ", |
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[ |
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$sourcePort, |
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$targetPort |
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] |
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); |
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} |
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} |
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phpflo /
phpflo-fbp
