1 files changed, 57 insertions, 0 deletions
diff --git a/gluster/gfapi/utils.py b/gluster/gfapi/utils.py
new file mode 100644
index 0000000..a556a41
--- /dev/null
+++ b/gluster/gfapi/utils.py
@@ -0,0 +1,57 @@
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This file is part of libgfapi-python project which is a
+# subproject of GlusterFS ( www.gluster.org)
+#
+# This file is licensed to you under your choice of the GNU Lesser
+# General Public License, version 3 or any later version (LGPLv3 or
+# later), or the GNU General Public License, version 2 (GPLv2), in all
+# cases as published by the Free Software Foundation.
+
+import os
+import errno
+from functools import wraps
+from gluster.gfapi.exceptions import VolumeNotMounted
+
+
+def validate_mount(func):
+    """
+    Decorator to assert that volume is initialized and mounted before any
+    further I/O calls are invoked by methods.
+
+    :param func: method to be decorated and checked.
+    """
+    def _exception(volname):
+        raise VolumeNotMounted('Volume "%s" not mounted.' % (volname))
+
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        self = args[0]
+        if self.fs and self._mounted:
+            return func(*args, **kwargs)
+        else:
+            return _exception(self.volname)
+    wrapper.__wrapped__ = func
+
+    return wrapper
+
+
+def validate_glfd(func):
+    """
+    Decorator to assert that glfd is valid.
+
+    :param func: method to be decorated and checked.
+    """
+    def _exception():
+        raise OSError(errno.EBADF, os.strerror(errno.EBADF))
+
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        self = args[0]
+        if self.fd:
+            return func(*args, **kwargs)
+        else:
+            return _exception()
+    wrapper.__wrapped__ = func
+
+    return wrapper