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<?php |
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/** |
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* This file is part of graze/data-flow |
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* |
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* Copyright (c) 2016 Nature Delivered Ltd. <https://www.graze.com> |
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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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* @license https://github.com/graze/data-flow/blob/master/LICENSE.md |
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* @link https://github.com/graze/data-flow |
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*/ |
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namespace Graze\DataFlow; |
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use Graze\DataFile\Helper\OptionalLoggerTrait; |
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use InvalidArgumentException; |
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use Psr\Log\LoggerAwareInterface; |
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use Psr\Log\LogLevel; |
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use ReflectionClass; |
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class Builder implements FlowBuilderInterface, LoggerAwareInterface |
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{ |
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use OptionalLoggerTrait; |
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/** |
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* @var string[] |
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*/ |
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protected $namespaces = [ |
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'', // allow Fully qualified class names to be built |
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'Graze\\DataFlow\\Flow\\', |
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'Graze\\DataFlow\\Flow\\Collection\\', |
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'Graze\\DataFlow\\Flow\\File\\', |
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'Graze\\DataFlow\\Flow\\File\\Compression\\', |
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'Graze\\DataFlow\\Flow\\Runner\\', |
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]; |
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/** |
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* Add a namespace to check for flow names within |
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* |
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* @param string $namespace |
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* |
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* @return void |
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*/ |
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public function addNamespace($namespace) |
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{ |
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$this->namespaces[] = $namespace; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getNamespaces() |
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{ |
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return $this->namespaces; |
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} |
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/** |
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* Create a new Flow based on a name |
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* |
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* @param mixed $flowName |
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* @param array $arguments |
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* |
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* @return FlowInterface |
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*/ |
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public function buildFlow($flowName, array $arguments = []) |
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{ |
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if ($flowName instanceof FlowInterface) { |
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return $flowName; |
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} |
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foreach ($this->getNamespaces() as $namespace) { |
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$className = $namespace . ucfirst($flowName); |
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if (!class_exists($className)) { |
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continue; |
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} |
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$reflection = new ReflectionClass($className); |
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if (!$reflection->isSubclassOf(FlowInterface::class)) { |
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throw new InvalidArgumentException(sprintf( |
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"'%s' from flowName: '%s' is not a valid DataFlow", |
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$className, |
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$flowName |
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)); |
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} |
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$this->log(LogLevel::DEBUG, "Building flow: {class}", ['class' => $className]); |
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$flow = $reflection->newInstanceArgs($arguments); |
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if ($this->logger && ($flow instanceof LoggerAwareInterface)) { |
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$flow->setLogger($this->logger); |
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} |
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return $flow; |
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} |
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throw new InvalidArgumentException(sprintf("'%s' is not a valid flow name", $flowName)); |
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} |
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} |
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graze /
data-flow
