From 1fb23610eb47e4b6d181901fff59b4b30ac2aaad Mon Sep 17 00:00:00 2001 From: Sean Dague Date: Thu, 14 Jun 2012 17:06:48 -0400 Subject: add import_object_ns function To support bp:virt-driver-cleanup, there is a desire to have shorter driver strings (i.e. libvirt.LibvirtDriver instead of nova.virt.libvirt.LibvirtDriver). One way to support this is with a new import_object variant that takes a namespace to load from. If the code fails to load the driver in the prefered namespace it will also try loading the full driver path, before throwing an exception. Change-Id: Ib97c92f38685ca89f29890f8015fc413acc744f8 --- openstack/common/importutils.py | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'openstack/common/importutils.py') diff --git a/openstack/common/importutils.py b/openstack/common/importutils.py index 7654af5..933b54d 100644 --- a/openstack/common/importutils.py +++ b/openstack/common/importutils.py @@ -38,6 +38,19 @@ def import_object(import_str, *args, **kwargs): return import_class(import_str)(*args, **kwargs) +def import_object_ns(name_space, import_str, *args, **kwargs): + """ + Import a class and return an instance of it, first by trying + to find the class in a default namespace, then failing back to + a full path if not found in the default namespace. + """ + import_value = "%s.%s" % (name_space, import_str) + try: + return import_class(import_value)(*args, **kwargs) + except ImportError: + return import_class(import_str)(*args, **kwargs) + + def import_module(import_str): """Import a module.""" __import__(import_str) -- cgit