NEPT-1530: Implement file flushing.

nexteuropa_varnish.module

@@ -279,6 +279,21 @@ function nexteuropa_varnish_node_delete($node) {
   }
 }
 
+/**
+ * Implements hook_file_delete().
+ */
+function nexteuropa_varnish_file_delete($file) {
+  $scheme = file_uri_scheme($file->uri);
+
+  if ($scheme !== FALSE && file_stream_wrapper_valid_scheme($scheme) === TRUE) {
+    // Get path on filesystem.
+    $wrapper = file_stream_wrapper_get_instance_by_scheme($scheme);
+    _nexteuropa_varnish_purge_paths(array(
+      'escaped_alias' => preg_quote($wrapper->getDirectoryPath($file) . '/' . $file->filename, '/'),
+    ));
+  }
+}
+
 /**
  * Implements hook_path_delete().
  */
@@ -288,14 +303,15 @@ function nexteuropa_varnish_path_delete($path) {
   }
 
   $node = menu_get_object('node', 1, $path['source']);
+  $is_file = strpos($path['source'], 'file/');
 
-  // Its a node path.
-  if (empty($node)) {
+  // Has to be a node or file path.
+  if ($node === NULL && $is_file === FALSE) {
     return;
   }
 
   // No rule defined for the node: Ignore the rest of the process.
-  if (!nexteuropa_varnish_node_has_rules($node)) {
+  if ($node !== NULL && nexteuropa_varnish_node_has_rules($node) === FALSE) {
     return;
   }