symfony · Ocramius · Mar 29, 2013 · Mar 30, 2013 · Mar 30, 2013 · Mar 30, 2013
diff --git a/composer.json b/composer.json
@@ -66,7 +66,8 @@
         "doctrine/orm": "~2.2,>=2.2.3",
         "monolog/monolog": "~1.3",
         "propel/propel1": "1.6.*",
-        "ircmaxell/password-compat": "1.0.*"
+        "ircmaxell/password-compat": "1.0.*",
+        "ocramius/proxy-manager": ">=0.3.1,<0.4-dev"
     },
     "autoload": {
         "psr-0": { "Symfony\\": "src/" },

diff --git a/src/Symfony/Bridge/ProxyManager/.gitignore b/src/Symfony/Bridge/ProxyManager/.gitignore
@@ -0,0 +1,4 @@
+vendor/
+composer.lock
+phpunit.xml
+
diff --git a/src/Symfony/Bridge/ProxyManager/CHANGELOG.md b/src/Symfony/Bridge/ProxyManager/CHANGELOG.md
@@ -0,0 +1,7 @@
+CHANGELOG
+=========
+
+2.3.0
+-----
+
+ * First introduction of `Symfony\Bridge\ProxyManager`
diff --git a/src/Symfony/Bridge/ProxyManager/LICENSE b/src/Symfony/Bridge/ProxyManager/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2004-2013 Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/src/Symfony/Bridge/ProxyManager/LazyProxy/Instantiator/RuntimeInstantiator.php b/src/Symfony/Bridge/ProxyManager/LazyProxy/Instantiator/RuntimeInstantiator.php
@@ -0,0 +1,62 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\ProxyManager\LazyProxy\Instantiator;
+
+use ProxyManager\Configuration;
+use ProxyManager\Factory\LazyLoadingValueHolderFactory;
+use ProxyManager\GeneratorStrategy\EvaluatingGeneratorStrategy;
+use ProxyManager\Proxy\LazyLoadingInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\LazyProxy\Instantiator\InstantiatorInterface;
+
+/**
+ * Runtime lazy loading proxy generator
+ *
+ * @author Marco Pivetta <ocramius@gmail.com>
+ */
+class RuntimeInstantiator implements InstantiatorInterface
+{
+    /**
+     * @var \ProxyManager\Factory\LazyLoadingValueHolderFactory
+     */
+    private $factory;
+
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        $config = new Configuration();
+
+        $config->setGeneratorStrategy(new EvaluatingGeneratorStrategy());
+
+        $this->factory = new LazyLoadingValueHolderFactory($config);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function instantiateProxy(ContainerInterface $container, Definition $definition, $id, $realInstantiator)
+    {
+        return $this->factory->createProxy(
+            $definition->getClass(),
+            function (& $wrappedInstance, LazyLoadingInterface $proxy) use ($realInstantiator) {
+                $proxy->setProxyInitializer(null);
+
+                $wrappedInstance = call_user_func($realInstantiator);
+
+                return true;
+            }
+        );
+    }
+}
diff --git a/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php b/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
@@ -0,0 +1,116 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\ProxyManager\LazyProxy\PhpDumper;
+
+use ProxyManager\Generator\ClassGenerator;
+use ProxyManager\GeneratorStrategy\BaseGeneratorStrategy;
+use ProxyManager\ProxyGenerator\LazyLoadingValueHolderGenerator;
+use Symfony\Component\DependencyInjection\Container;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\LazyProxy\PhpDumper\DumperInterface;
+
+/**
+ * Generates dumped php code of proxies via reflection
+ *
+ * @author Marco Pivetta <ocramius@gmail.com>
+ */
+class ProxyDumper implements DumperInterface
+{
+    /**
+     * @var \ProxyManager\ProxyGenerator\LazyLoadingValueHolderGenerator
+     */
+    private $proxyGenerator;
+
+    /**
+     * @var \ProxyManager\GeneratorStrategy\BaseGeneratorStrategy
+     */
+    private $classGenerator;
+
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        $this->proxyGenerator = new LazyLoadingValueHolderGenerator();
+        $this->classGenerator = new BaseGeneratorStrategy();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function isProxyCandidate(Definition $definition)
+    {
+        return $definition->isLazy()
+            && ($class = $definition->getClass())
+            && class_exists($class);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getProxyFactoryCode(Definition $definition, $id)
+    {
+        $instantiation = 'return';
+
+        if (ContainerInterface::SCOPE_CONTAINER === $definition->getScope()) {
+            $instantiation .= " \$this->services['$id'] =";
+        } elseif (ContainerInterface::SCOPE_PROTOTYPE !== $scope = $definition->getScope()) {
+            $instantiation .= " \$this->services['$id'] = \$this->scopedServices['$scope']['$id'] =";
+        }
+
+        $methodName = 'get' . Container::camelize($id) . 'Service';
+        $proxyClass = $this->getProxyClassName($definition);
+
+        return <<<EOF
+        if (\$lazyLoad) {
+            \$container = \$this;
+
+            $instantiation new $proxyClass(
+                function (& \$wrappedInstance, \ProxyManager\Proxy\LazyLoadingInterface \$proxy) use (\$container) {
+                    \$proxy->setProxyInitializer(null);
+
+                    \$wrappedInstance = \$container->$methodName(false);
+
+                    return true;
+                }
+            );
+        }
+
+
+EOF;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getProxyCode(Definition $definition)
+    {
+        $generatedClass = new ClassGenerator($this->getProxyClassName($definition));
+
+        $this->proxyGenerator->generate(new \ReflectionClass($definition->getClass()), $generatedClass);
+
+        return $this->classGenerator->generate($generatedClass);
+    }
+
+    /**
+     * Produces the proxy class name for the given definition
+     *
+     * @param Definition $definition
+     *
+     * @return string
+     */
+    private function getProxyClassName(Definition $definition)
+    {
+        return str_replace('\\', '', $definition->getClass()) . '_' . spl_object_hash($definition);
+    }
+}
diff --git a/src/Symfony/Bridge/ProxyManager/README.md b/src/Symfony/Bridge/ProxyManager/README.md
@@ -0,0 +1,13 @@
+ProxyManager Bridge
+===================
+
+Provides integration for [ProxyManager](https://github.com/Ocramius/ProxyManager) with various Symfony2 components.
+
+Resources
+---------
+
+You can run the unit tests with the following command:
+
+    $ cd path/to/Symfony/Bridge/ProxyManager/
+    $ composer.phar install --dev
+    $ phpunit
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/ContainerBuilderTest.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/ContainerBuilderTest.php
@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\ProxyManager\LazyProxy\Tests;
+
+require_once __DIR__ . '/Fixtures/includes/foo.php';
+
+use ProxyManager\Configuration;
+use Symfony\Bridge\ProxyManager\LazyProxy\Instantiator\RuntimeInstantiator;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Integration tests for {@see \Symfony\Component\DependencyInjection\ContainerBuilder} combined
+ * with the ProxyManager bridge
+ *
+ * @author Marco Pivetta <ocramius@gmail.com>
+ */
+class ContainerBuilderTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @covers Symfony\Component\DependencyInjection\ContainerBuilder::createService
+     */
+    public function testCreateProxyServiceWithRuntimeInstantiator()
+    {
+        $builder = new ContainerBuilder();
+
+        $builder->setProxyInstantiator(new RuntimeInstantiator());
+
+        $builder->register('foo1', 'ProxyManagerBridgeFooClass')->setFile(__DIR__.'/Fixtures/includes/foo.php');
+        $builder->getDefinition('foo1')->setLazy(true);
+
+        /* @var $foo1 \ProxyManager\Proxy\LazyLoadingInterface|\ProxyManager\Proxy\ValueHolderInterface */
+        $foo1 = $builder->get('foo1');
+
+        $this->assertSame($foo1, $builder->get('foo1'), 'The same proxy is retrieved on multiple subsequent calls');
+        $this->assertInstanceOf('\ProxyManagerBridgeFooClass', $foo1);
+        $this->assertInstanceOf('\ProxyManager\Proxy\LazyLoadingInterface', $foo1);
+        $this->assertFalse($foo1->isProxyInitialized());
+
+        $foo1->initializeProxy();
+
+        $this->assertSame($foo1, $builder->get('foo1'), 'The same proxy is retrieved after initialization');
+        $this->assertTrue($foo1->isProxyInitialized());
+        $this->assertInstanceOf('\ProxyManagerBridgeFooClass', $foo1->getWrappedValueHolderValue());
+        $this->assertNotInstanceOf('\ProxyManager\Proxy\LazyLoadingInterface', $foo1->getWrappedValueHolderValue());
+    }
+}
diff --git a/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Dumper/PhpDumperTest.php b/src/Symfony/Bridge/ProxyManager/Tests/LazyProxy/Dumper/PhpDumperTest.php
@@ -0,0 +1,72 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\ProxyManager\LazyProxy\Tests\Dumper;
+
+use ProxyManager\Configuration;
+use Symfony\Bridge\ProxyManager\LazyProxy\PhpDumper\ProxyDumper;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Dumper\PhpDumper;
+
+/**
+ * Integration tests for {@see \Symfony\Component\DependencyInjection\Dumper\PhpDumper} combined
+ * with the ProxyManager bridge
+ *
+ * @author Marco Pivetta <ocramius@gmail.com>
+ */
+class PhpDumperTest extends \PHPUnit_Framework_TestCase
+{
+    public function testDumpContainerWithProxyService()
+    {
+        $container = new ContainerBuilder();
+
+        $container->register('foo', 'stdClass');
+        $container->getDefinition('foo')->setLazy(true);
+        $container->compile();
+
+        $dumper = new PhpDumper($container);
+
+        $dumper->setProxyDumper(new ProxyDumper());
+
+        $dumpedString = $dumper->dump();
+
+        $this->assertStringMatchesFormatFile(
+            __DIR__ . '/../Fixtures/php/lazy_service_structure.txt',
+            $dumpedString,
+            '->dump() does generate proxy lazy loading logic.'
+        );
+    }
+
+
+    /**
+     * Verifies that the generated container retrieves the same proxy instance on multiple subsequent requests
+     */
+    public function testDumpContainerWithProxyServiceWillShareProxies()
+    {
+        require_once __DIR__ . '/../Fixtures/php/lazy_service.php';
+
+        $container = new \LazyServiceProjectServiceContainer();
+
+        /* @var $proxy \stdClass_c1d194250ee2e2b7d2eab8b8212368a8 */
+        $proxy = $container->get('foo');
+
+        $this->assertInstanceOf('stdClass_c1d194250ee2e2b7d2eab8b8212368a8', $proxy);
+        $this->assertSame($proxy, $container->get('foo'));
+
+        $this->assertFalse($proxy->isProxyInitialized());
+
+        $proxy->initializeProxy();
+
+        $this->assertTrue($proxy->isProxyInitialized());
+        $this->assertSame($proxy, $container->get('foo'));
+    }
+}