**** CubicPower OpenStack Study ****
def patch_fake_oflib_of():
ryu_mod = mock.Mock()
ryu_base_mod = ryu_mod.base
ryu_lib_mod = ryu_mod.lib
ryu_lib_hub = ryu_lib_mod.hub
ryu_ofproto_mod = ryu_mod.ofproto
ryu_ofproto_of13 = ryu_ofproto_mod.ofproto_v1_3
ryu_ofproto_of13.OFPTT_ALL = 0xff
ryu_ofproto_of13.OFPG_ANY = 0xffffffff
ryu_ofproto_of13.OFPP_ANY = 0xffffffff
ryu_ofproto_of13.OFPFC_ADD = 0
ryu_ofproto_of13.OFPFC_DELETE = 3
ryu_app_mod = ryu_mod.app
ryu_app_ofctl_mod = ryu_app_mod.ofctl
ryu_ofctl_api = ryu_app_ofctl_mod.api
return mock.patch.dict('sys.modules',
{'ryu': ryu_mod,
'ryu.base': ryu_base_mod,
'ryu.lib': ryu_lib_mod,
'ryu.lib.hub': ryu_lib_hub,
'ryu.ofproto': ryu_ofproto_mod,
'ryu.ofproto.ofproto_v1_3': ryu_ofproto_of13,
'ryu.app': ryu_app_mod,
'ryu.app.ofctl': ryu_app_ofctl_mod,
'ryu.app.ofctl.api': ryu_ofctl_api})