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<?php |
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namespace Kaliop\eZMigrationBundle\Core; |
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use Kaliop\eZMigrationBundle\API\ContextStorageHandlerInterface; |
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use Kaliop\eZMigrationBundle\API\ContextProviderInterface; |
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/** |
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* Takes care of storing / restoring all necessary migration execution context information, acting as a "multiplexer": |
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* services which hold context information have to implement the ContextProviderInterface interface |
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*/ |
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class ContextHandler |
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{ |
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protected $storageHandler; |
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/** @var ContextProviderInterface[] $providers */ |
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protected $providers = array(); |
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public function __construct(ContextStorageHandlerInterface $storageHandler) |
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{ |
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$this->storageHandler = $storageHandler; |
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} |
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/** |
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* @param ContextProviderInterface $contextProvider |
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* @param string $label |
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*/ |
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public function addProvider(ContextProviderInterface $contextProvider, $label) |
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{ |
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$this->providers[$label] = $contextProvider; |
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} |
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/** |
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* @param string $migrationName |
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*/ |
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public function storeCurrentContext($migrationName) |
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{ |
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$context = array(); |
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foreach($this->providers as $label => $provider) { |
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$context[$label] = $provider->getCurrentContext($migrationName); |
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} |
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$this->storageHandler->storeMigrationContext($migrationName, $context); |
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} |
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/** |
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* @param string $migrationName |
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* @throws \Exception |
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*/ |
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public function restoreCurrentContext($migrationName) |
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{ |
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$context = $this->storageHandler->loadMigrationContext($migrationName); |
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if (!is_array($context)) { |
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throw new \Exception("No execution context found associated with migration '$migrationName'"); |
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} |
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foreach($this->providers as $label => $provider) { |
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if (isset($context[$label])) { |
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$provider->restoreContext($migrationName, $context[$label]); |
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} |
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} |
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} |
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public function deleteContext($migrationName) |
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{ |
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$this->storageHandler->deleteMigrationContext($migrationName); |
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} |
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} |
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kaliop-uk /
ezmigrationbundle
