--- /dev/null
+<?php
+
+/*
+ * This file is part of the Behat Testwork.
+ * (c) Konstantin Kudryashov <ever.zet@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Behat\Testwork\Filesystem;
+
+/**
+ * Logs filesystem operations.
+ *
+ * @author Konstantin Kudryashov <ever.zet@gmail.com>
+ */
+interface FilesystemLogger
+{
+ /**
+ * Logs directory creation.
+ *
+ * @param string $path
+ * @param string $reason
+ */
+ public function directoryCreated($path, $reason);
+
+ /**
+ * Logs file creation.
+ *
+ * @param string $path
+ * @param string $reason
+ */
+ public function fileCreated($path, $reason);
+
+ /**
+ * Logs file update.
+ *
+ * @param string $path
+ * @param string $reason
+ */
+ public function fileUpdated($path, $reason);
+}