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<?php |
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/** |
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* This file is part of slick/di package |
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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 Slick\Di\DefinitionLoader; |
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use ArrayObject; |
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use Exception; |
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use RecursiveDirectoryIterator; |
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use RecursiveIteratorIterator; |
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use RegexIterator; |
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use Slick\Di\Container; |
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use Slick\Di\ContainerAwareInterface; |
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use Slick\Di\ContainerInterface; |
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use Slick\Di\Definition\Factory; |
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use Slick\Di\DefinitionLoader\AutowireDefinitionLoader\ClassFile; |
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use Slick\Di\DefinitionLoaderInterface; |
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use Slick\Di\Exception\AmbiguousImplementationException; |
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use Slick\Di\Exception\InvalidDefinitionsPathException; |
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use Slick\FsWatch\Directory; |
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use Slick\FsWatch\Exception\DirectoryNotAccecible; |
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use Slick\FsWatch\Exception\DirectoryNotFound; |
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use SplFileInfo; |
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use Traversable; |
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/** |
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* AutowireDefinitionLoader |
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* |
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* @package Slick\Di\DefinitionLoader |
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* @author Filipe Silva <[email protected]> |
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*/ |
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class AutowireDefinitionLoader implements DefinitionLoaderInterface, ContainerAwareInterface |
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{ |
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private ?ContainerInterface $container = null; |
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private const TMP_FILE_NAME = '/_slick_di_autowire'; |
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/** |
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* @var array<ClassFile>|ClassFile[] |
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*/ |
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private array $files = []; |
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private array $definitions = []; |
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protected array $implementations = []; |
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private Directory $directoryWatcher; |
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public function __construct(string $path) |
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{ |
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try { |
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$this->directoryWatcher = new Directory($path); |
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} catch (DirectoryNotFound|DirectoryNotAccecible) { |
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throw new InvalidDefinitionsPathException( |
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'Provided autowire definitions path is not valid or is not found. ' . |
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'Could not create container. Please check ' . $path |
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); |
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} |
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if (!$this->loadImplementations()) { |
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$this->loadFiles($path); |
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$this->organiseImplementations(); |
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} |
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$this->createDefinitions(); |
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} |
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public function getIterator(): Traversable |
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{ |
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return new ArrayObject($this->definitions); |
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} |
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public function setContainer(ContainerInterface $container): void |
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{ |
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$this->container = $container; |
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} |
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public function getContainer(): ?ContainerInterface |
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{ |
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return $this->container; |
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} |
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/** |
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* @param string $path |
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* @return void |
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*/ |
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public function loadFiles(string $path): void |
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{ |
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try { |
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$directory = new RecursiveDirectoryIterator($path); |
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} catch (Exception) { |
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throw new InvalidDefinitionsPathException( |
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'Provided autowire definitions path is not valid or is not found. ' . |
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'Could not create container. Please check ' . $path |
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); |
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} |
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$iterator = new RecursiveIteratorIterator($directory); |
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$phpFiles = new RegexIterator($iterator, '/.*\.php$/i'); |
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/** @var SplFileInfo $phpFile */ |
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foreach ($phpFiles as $phpFile) { |
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$classFile = new ClassFile($phpFile->getPathname()); |
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if ($classFile->isAnImplementation()) { |
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$this->files[] = $classFile; |
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} |
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} |
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} |
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/** |
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* Organizes the implementations based on interfaces and parent classes. |
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* |
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* @return void |
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*/ |
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private function organiseImplementations(): void |
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{ |
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foreach ($this->files as $file) { |
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foreach ($file->interfaces() as $interface) { |
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$entry = array_key_exists($interface, $this->implementations) ? $this->implementations[$interface] : []; |
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if (in_array($file->className(), $entry)) { |
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continue; |
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} |
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$entry[] = $file->className(); |
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$this->implementations[$interface] = $entry; |
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} |
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if (!$file->parentClass()) { |
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continue; |
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} |
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$entry = array_key_exists($file->parentClass(), $this->implementations) |
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? $this->implementations[$file->parentClass()] |
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: []; |
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if (!in_array($file->className(), $entry)) { |
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$entry[] = $file->className(); |
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$this->implementations[$file->parentClass()] = $entry; |
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} |
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} |
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$this->saveImplementations(); |
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} |
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private function saveImplementations(): void |
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{ |
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$file = sys_get_temp_dir() . self::TMP_FILE_NAME; |
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if (is_file($file)) { |
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unlink($file); |
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} |
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$data = [ |
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'snapshot' => $this->directoryWatcher->snapshot(), |
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'implementations' => $this->implementations, |
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]; |
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file_put_contents($file, serialize($data)); |
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} |
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private function loadImplementations(): bool |
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{ |
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$file = sys_get_temp_dir() . self::TMP_FILE_NAME; |
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if (!file_exists($file)) { |
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return false; |
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} |
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$cachedData = unserialize(file_get_contents($file)); |
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/** @var Directory\Snapshot $snapshot */ |
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$snapshot = $cachedData['snapshot']; |
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if ($this->directoryWatcher->hasChanged($snapshot)) { |
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return false; |
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} |
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$this->implementations = $cachedData['implementations']; |
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return true; |
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} |
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protected function createDefinitions():void |
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{ |
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foreach ($this->implementations as $key => $classes) { |
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if ($this->container && $this->container->has($key)) { |
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continue; |
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} |
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$this->definitions[$key] = count($classes) === 1 |
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? new Factory($this->createCallback($classes[0])) |
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: new Factory($this->createAmbiguousCallback($key)); |
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} |
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} |
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private function createCallback(string $className): callable |
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{ |
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return function (Container $container) use ($className) { |
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return $container->make($className); |
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}; |
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} |
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private function createAmbiguousCallback(string $interface): callable |
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{ |
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return function () use ($interface) { |
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throw new AmbiguousImplementationException("Ambiguous implementation for '$interface'. " . |
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"There are more then 1 implementations you need to provide a service definition for this interface."); |
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}; |
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} |
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} |
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