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<?php |
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/* |
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* This file is part of Transfer. |
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* |
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* For the full copyright and license information, please view the LICENSE file located |
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* in the root directory. |
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*/ |
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namespace Transfer\Procedure; |
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use Transfer\Adapter\CallbackAdapter; |
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use Transfer\Adapter\SourceAdapterInterface; |
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use Transfer\Adapter\TargetAdapterInterface; |
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use Transfer\Adapter\Transaction\Request; |
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use Transfer\Worker\CallbackWorker; |
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use Transfer\Worker\SplitterWorker; |
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use Transfer\Worker\WorkerInterface; |
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/** |
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* Procedure builder. |
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*/ |
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class ProcedureBuilder |
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{ |
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/** |
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* @var array Definitions |
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*/ |
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private $definitions; |
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/** |
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* @var string Current definition |
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*/ |
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private $context; |
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public function __construct() |
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{ |
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$this->createProcedure('root'); |
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} |
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/** |
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* Creates a procedure. |
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* |
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* @param string $name Procedure name |
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* |
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* @return $this |
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*/ |
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public function createProcedure($name) |
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{ |
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$definition = array( |
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'parent' => $this->context, |
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'name' => $name, |
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'sources' => array(), |
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'workers' => array(), |
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'targets' => array(), |
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'children' => array(), |
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); |
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$this->definitions[$name] = $definition; |
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$this->context = $name; |
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return $this; |
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} |
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/** |
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* Builds a procedure object. |
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* |
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* @return Procedure |
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*/ |
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public function getProcedure() |
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{ |
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return Procedure::createFromDefinition($this->definitions['root']); |
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} |
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/** |
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* Adds a source instruction to a procedure. |
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* |
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* @param SourceAdapterInterface|callable $adapter Source adapter |
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* @param Request $request Request sent to source adapter |
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* |
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* @return $this |
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*/ |
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public function addSource($adapter, Request $request = null) |
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{ |
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if ($request === null) { |
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$request = new Request(); |
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} |
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$this->addDefinition( |
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'sources', |
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array((is_callable($adapter) ? new CallbackAdapter($adapter, null) : $adapter), $request) |
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); |
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return $this; |
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} |
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/** |
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* Adds a target instruction to a procedure. |
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* |
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* @param TargetAdapterInterface|callable $adapter Target adapter |
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* |
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* @return $this |
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*/ |
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public function addTarget($adapter) |
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{ |
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$this->addDefinition( |
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'targets', |
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is_callable($adapter) ? new CallbackAdapter(null, $adapter) : $adapter |
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); |
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return $this; |
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} |
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/** |
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* Adds a worker instruction to a procedure. |
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* |
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* @param WorkerInterface|callable $worker Worker |
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* |
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* @return $this |
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*/ |
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public function addWorker($worker) |
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{ |
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$this->addDefinition( |
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'workers', |
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is_callable($worker) ? new CallbackWorker($worker) : $worker |
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); |
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return $this; |
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} |
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/** |
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* Pushes the array elements to the local storage. |
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* |
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* @return $this |
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*/ |
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public function split() |
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{ |
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return $this->addWorker(new SplitterWorker()); |
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} |
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/** |
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* Switches current procedure context to parent procedure. |
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* |
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* @return $this |
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*/ |
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public function end() |
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{ |
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$definition = $this->definitions[$this->context]; |
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$this->context = $this->definitions[$this->context]['parent']; |
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$this->definitions[$this->context]['children'][] = $definition; |
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return $this; |
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} |
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/** |
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* Adds definition. |
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* |
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* @param string $type |
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* @param mixed $component |
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*/ |
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private function addDefinition($type, $component) |
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{ |
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$this->definitions[$this->context][$type][] = $component; |
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} |
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} |
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