[AssetMapper] add support for assets pre-compression

Author: dunglas

CHANGELOG.md

@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+7.3
+---
+
+ * Add support for assets pre-compression
+
 7.2
 ---
 

DependencyInjection/Configuration.php

@@ -17,6 +17,7 @@
 use Symfony\Bundle\FullStack;
 use Symfony\Component\Asset\Package;
 use Symfony\Component\AssetMapper\AssetMapper;
+use Symfony\Component\AssetMapper\Compressor\CompressorInterface;
 use Symfony\Component\Cache\Adapter\DoctrineAdapter;
 use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\Config\Definition\Builder\NodeBuilder;
@@ -924,6 +925,29 @@ private function addAssetMapperSection(ArrayNodeDefinition $rootNode, callable $
                             ->info('The directory to store JavaScript vendors.')
                             ->defaultValue('%kernel.project_dir%/assets/vendor')
                         ->end()
+                        ->arrayNode('precompress')
+                            ->info('Precompress assets with Brotli, Zstandard and gzip.')
+                            ->canBeEnabled()
+                            ->fixXmlConfig('format')
+                            ->fixXmlConfig('extension')
+                            ->children()
+                                ->arrayNode('formats')
+                                    ->info('Array of formats to enable. "brotli", "zstandard" and "gzip" are supported. Defaults to all formats supported by the system. The entire list must be provided.')
+                                    ->prototype('scalar')->end()
+                                    ->performNoDeepMerging()
+                                    ->validate()
+                                        ->ifTrue(static fn (array $v) => array_diff($v, ['brotli', 'zstandard', 'gzip']))
+                                        ->thenInvalid('Unsupported format: "brotli", "zstandard" and "gzip" are supported.')
+                                    ->end()
+                                ->end()
+                                ->arrayNode('extensions')
+                                    ->info('Array of extensions to compress. The entire list must be provided, no merging occurs.')
+                                    ->prototype('scalar')->end()
+                                    ->performNoDeepMerging()
+                                    ->defaultValue(interface_exists(CompressorInterface::class) ? CompressorInterface::DEFAULT_EXTENSIONS : [])
+                                ->end()
+                            ->end()
+                        ->end()
                     ->end()
                 ->end()
             ->end()

DependencyInjection/FrameworkExtension.php

@@ -32,6 +32,7 @@
 use Symfony\Component\Asset\PackageInterface;
 use Symfony\Component\AssetMapper\AssetMapper;
 use Symfony\Component\AssetMapper\Compiler\AssetCompilerInterface;
+use Symfony\Component\AssetMapper\Compressor\CompressorInterface;
 use Symfony\Component\BrowserKit\AbstractBrowser;
 use Symfony\Component\Cache\Adapter\AdapterInterface;
 use Symfony\Component\Cache\Adapter\ArrayAdapter;
@@ -1372,6 +1373,26 @@ private function registerAssetMapperConfiguration(array $config, ContainerBuilde
             ->replaceArgument(3, $config['importmap_polyfill'])
             ->replaceArgument(4, $config['importmap_script_attributes'])
         ;
+
+        if (interface_exists(CompressorInterface::class)) {
+            $compressors = [];
+            foreach ($config['precompress']['formats'] as $format) {
+                $compressors[$format] = new Reference("asset_mapper.compressor.$format");
+            }
+
+            $container->getDefinition('asset_mapper.compressor')->replaceArgument(0, $compressors ?: null);
+
+            if ($config['precompress']['enabled']) {
+                $container
+                    ->getDefinition('asset_mapper.local_public_assets_filesystem')
+                    ->addArgument(new Reference('asset_mapper.compressor'))
+                    ->addArgument($config['precompress']['extensions'])
+                ;
+            }
+        } else {
+            $container->removeDefinition('asset_mapper.compressor');
+            $container->removeDefinition('asset_mapper.assets.command.compress');
+        }
     }
 
     /**

Resources/config/asset_mapper.php

@@ -17,6 +17,7 @@
 use Symfony\Component\AssetMapper\AssetMapperInterface;
 use Symfony\Component\AssetMapper\AssetMapperRepository;
 use Symfony\Component\AssetMapper\Command\AssetMapperCompileCommand;
+use Symfony\Component\AssetMapper\Command\CompressAssetsCommand;
 use Symfony\Component\AssetMapper\Command\DebugAssetMapperCommand;
 use Symfony\Component\AssetMapper\Command\ImportMapAuditCommand;
 use Symfony\Component\AssetMapper\Command\ImportMapInstallCommand;
@@ -28,6 +29,11 @@
 use Symfony\Component\AssetMapper\Compiler\CssAssetUrlCompiler;
 use Symfony\Component\AssetMapper\Compiler\JavaScriptImportPathCompiler;
 use Symfony\Component\AssetMapper\Compiler\SourceMappingUrlsCompiler;
+use Symfony\Component\AssetMapper\Compressor\BrotliCompressor;
+use Symfony\Component\AssetMapper\Compressor\ChainCompressor;
+use Symfony\Component\AssetMapper\Compressor\CompressorInterface;
+use Symfony\Component\AssetMapper\Compressor\GzipCompressor;
+use Symfony\Component\AssetMapper\Compressor\ZstandardCompressor;
 use Symfony\Component\AssetMapper\Factory\CachedMappedAssetFactory;
 use Symfony\Component\AssetMapper\Factory\MappedAssetFactory;
 use Symfony\Component\AssetMapper\ImportMap\ImportMapAuditor;
@@ -254,5 +260,20 @@
         ->set('asset_mapper.importmap.command.outdated', ImportMapOutdatedCommand::class)
             ->args([service('asset_mapper.importmap.update_checker')])
             ->tag('console.command')
+
+        ->set('asset_mapper.compressor.brotli', BrotliCompressor::class)
+        ->set('asset_mapper.compressor.zstandard', ZstandardCompressor::class)
+        ->set('asset_mapper.compressor.gzip', GzipCompressor::class)
+
+        ->set('asset_mapper.compressor', ChainCompressor::class)
+            ->args([
+                abstract_arg('compressor'),
+                service('logger'),
+            ])
+        ->alias(CompressorInterface::class, 'asset_mapper.compressor')
+
+        ->set('asset_mapper.assets.command.compress', CompressAssetsCommand::class)
+            ->args([service('asset_mapper.compressor')])
+            ->tag('console.command')
     ;
 };

Resources/config/schema/symfony-1.0.xsd

@@ -206,6 +206,7 @@
             <xsd:element name="excluded-pattern" type="xsd:string" minOccurs="0" maxOccurs="unbounded" />
             <xsd:element name="extension" type="asset_mapper_extension" minOccurs="0" maxOccurs="unbounded" />
             <xsd:element name="importmap-script-attribute" type="asset_mapper_attribute" minOccurs="0" maxOccurs="unbounded" />
+            <xsd:element name="precompress" type="asset_mapper_precompress" minOccurs="0" maxOccurs="1" />
         </xsd:sequence>
         <xsd:attribute name="enabled" type="xsd:boolean" />
         <xsd:attribute name="exclude-dotfiles" type="xsd:boolean" />
@@ -230,6 +231,16 @@
         <xsd:attribute name="key" type="xsd:string" use="required" />
     </xsd:complexType>
 
+    <xsd:complexType name="asset_mapper_precompress">
+        <xsd:sequence>
+            <xsd:element name="format" type="xsd:string" minOccurs="0" maxOccurs="unbounded" />
+            <xsd:element name="extension" type="xsd:string" minOccurs="0" maxOccurs="unbounded" />
+        </xsd:sequence>
+
+        <xsd:attribute name="enabled" type="xsd:boolean" />
+    </xsd:complexType>
+
+
     <xsd:simpleType name="missing-import-mode">
         <xsd:restriction base="xsd:string">
             <xsd:enumeration value="strict" />

Tests/DependencyInjection/ConfigurationTest.php

@@ -15,6 +15,7 @@
 use PHPUnit\Framework\TestCase;
 use Symfony\Bundle\FrameworkBundle\DependencyInjection\Configuration;
 use Symfony\Bundle\FullStack;
+use Symfony\Component\AssetMapper\Compressor\CompressorInterface;
 use Symfony\Component\Cache\Adapter\DoctrineAdapter;
 use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
 use Symfony\Component\Config\Definition\Processor;
@@ -141,6 +142,11 @@ public function testAssetMapperCanBeEnabled()
             'vendor_dir' => '%kernel.project_dir%/assets/vendor',
             'importmap_script_attributes' => [],
             'exclude_dotfiles' => true,
+            'precompress' => [
+                'enabled' => false,
+                'formats' => [],
+                'extensions' => interface_exists(CompressorInterface::class) ? CompressorInterface::DEFAULT_EXTENSIONS : [],
+            ],
         ];
 
         $this->assertEquals($defaultConfig, $config['asset_mapper']);
@@ -847,6 +853,11 @@ protected static function getBundleDefaultConfig()
                 'vendor_dir' => '%kernel.project_dir%/assets/vendor',
                 'importmap_script_attributes' => [],
                 'exclude_dotfiles' => true,
+                'precompress' => [
+                    'enabled' => false,
+                    'formats' => [],
+                    'extensions' => interface_exists(CompressorInterface::class) ? CompressorInterface::DEFAULT_EXTENSIONS : [],
+                ],
             ],
             'cache' => [
                 'pools' => [],