bug #26758 [WebProfilerBundle][HttpKernel] Make FileLinkFormatter URL format generation lazy (nicolas-grekas)

This PR was merged into the 3.4 branch.

Discussion
----------

[WebProfilerBundle][HttpKernel] Make FileLinkFormatter URL format generation lazy

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #26755, #26754
| License       | MIT
| Doc PR        | -

Commits
-------

e074c0550c [WebProfilerBundle][HttpKernel] Make FileLinkFormatter URL format generation lazy

src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/WebProfilerExtension.php

@@ -11,10 +11,13 @@
 
 namespace Symfony\Bundle\WebProfilerBundle\DependencyInjection;
 
+use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
 use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\Config\FileLocator;
+use Symfony\Component\HttpKernel\Kernel;
 use Symfony\Bundle\WebProfilerBundle\EventListener\WebDebugToolbarListener;
 
 /**
@@ -53,6 +56,11 @@ class WebProfilerExtension extends Extension
             $container->setParameter('web_profiler.debug_toolbar.intercept_redirects', $config['intercept_redirects']);
             $container->setParameter('web_profiler.debug_toolbar.mode', $config['toolbar'] ? WebDebugToolbarListener::ENABLED : WebDebugToolbarListener::DISABLED);
         }
+
+        if (Kernel::VERSION_ID >= 30408 || Kernel::VERSION_ID >= 40008) {
+            $container->getDefinition('debug.file_link_formatter')
+                ->replaceArgument(3, new ServiceClosureArgument(new Reference('debug.file_link_formatter.url_format')));
+        }
     }
 
     /**

src/Symfony/Bundle/WebProfilerBundle/Resources/config/profiler.xml

@@ -56,20 +56,14 @@
             <argument>%debug.file_link_format%</argument>
             <argument type="service" id="request_stack" on-invalid="ignore" />
             <argument>%kernel.project_dir%</argument>
-            <argument type="service">
-                <service class="string">
-                    <factory function="implode" />
-                    <argument type="collection">
-                        <argument type="service">
-                            <service class="string">
-                                <factory service="router" method="generate" />
-                                <argument>_profiler_open_file</argument>
-                            </service>
-                        </argument>
-                        <argument>?file=%%f&amp;line=%%l#line%%l</argument>
-                    </argument>
-                </service>
-            </argument>
+            <argument>/_profiler/open?file=%%f&amp;line=%%l#line%%l</argument>
+        </service>
+
+        <service id="debug.file_link_formatter.url_format" class="string">
+            <factory class="Symfony\Component\HttpKernel\Debug\FileLinkFormatter" method="generateUrlFormat" />
+            <argument type="service" id="router" />
+            <argument>_profiler_open_file</argument>
+            <argument>?file=%%f&amp;line=%%l#line%%l</argument>
         </service>
     </services>
 </container>

src/Symfony/Component/HttpKernel/Debug/FileLinkFormatter.php

@@ -13,6 +13,8 @@ namespace Symfony\Component\HttpKernel\Debug;
 
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\Routing\Exception\ExceptionInterface;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
 
 /**
  * Formats debug file links.
@@ -26,6 +28,9 @@ class FileLinkFormatter implements \Serializable
     private $baseDir;
     private $urlFormat;
 
+    /**
+     * @param string|\Closure $urlFormat the URL format, or a closure that returns it on-demand
+     */
     public function __construct($fileLinkFormat = null, RequestStack $requestStack = null, $baseDir = null, $urlFormat = null)
     {
         $fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');
@@ -70,6 +75,18 @@ class FileLinkFormatter implements \Serializable
         }
     }
 
+    /**
+     * @internal
+     */
+    public static function generateUrlFormat(UrlGeneratorInterface $router, $routeName, $queryString)
+    {
+        try {
+            return $router->generate($routeName).$queryString;
+        } catch (ExceptionInterface $e) {
+            return null;
+        }
+    }
+
     private function getFileLinkFormat()
     {
         if ($this->fileLinkFormat) {
@@ -78,6 +95,10 @@ class FileLinkFormatter implements \Serializable
         if ($this->requestStack && $this->baseDir && $this->urlFormat) {
             $request = $this->requestStack->getMasterRequest();
             if ($request instanceof Request) {
+                if ($this->urlFormat instanceof \Closure && !$this->urlFormat = \call_user_func($this->urlFormat)) {
+                    return;
+                }
+
                 return array(
                     $request->getSchemeAndHttpHost().$request->getBaseUrl().$this->urlFormat,
                     $this->baseDir.DIRECTORY_SEPARATOR, '',