Switch to internal _i18n pattern, as per oslo_i18n guidelines

Guidelines referenced from:
http://docs.openstack.org/developer/oslo.i18n/usage.html

Change-Id: I2135ebe5faf4b9d3853f634722a885f8ee5a90d5
Partially-Closes-Bug: #1519493

neutron_vpnaas/_i18n.py

@@ -0,0 +1,42 @@
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import oslo_i18n
+
+DOMAIN = "neutron-vpnaas"
+
+_translators = oslo_i18n.TranslatorFactory(domain=DOMAIN)
+
+# The primary translation function using the well-known name "_"
+_ = _translators.primary
+
+# The contextual translation function using the name "_C"
+_C = _translators.contextual_form
+
+# The plural translation function using the name "_P"
+_P = _translators.plural_form
+
+# Translators for log levels.
+#
+# The abbreviated names are meant to reflect the usual use of a short
+# name like '_'. The "L" is for "log" and the other letter comes from
+# the level.
+_LI = _translators.log_info
+_LW = _translators.log_warning
+_LE = _translators.log_error
+_LC = _translators.log_critical
+
+
+def get_available_languages():
+    return oslo_i18n.get_available_languages(DOMAIN)

neutron_vpnaas/db/vpn/vpn_db.py

@@ -22,7 +22,6 @@ from neutron.db import common_db_mixin as base_db
 from neutron.db import l3_agentschedulers_db as l3_agent_db
 from neutron.db import models_v2
 from neutron.extensions import l3 as l3_exception
-from neutron.i18n import _LW
 from neutron import manager
 from neutron.plugins.common import constants as p_constants
 from neutron.plugins.common import utils
@@ -32,6 +31,7 @@ from oslo_utils import uuidutils
 import sqlalchemy as sa
 from sqlalchemy.orm import exc
 
+from neutron_vpnaas._i18n import _LW
 from neutron_vpnaas.db.vpn import vpn_models
 from neutron_vpnaas.db.vpn import vpn_validator
 from neutron_vpnaas.extensions import vpnaas

neutron_vpnaas/services/vpn/common/netns_wrapper.py

@@ -20,12 +20,13 @@ import sys
 from eventlet.green import subprocess
 from neutron.common import config
 from neutron.common import utils
-from neutron.i18n import _LE, _LI
 from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_rootwrap import wrapper
 import six
 
+from neutron_vpnaas._i18n import _LE, _LI
+
 if six.PY3:
     import configparser as ConfigParser
 else:

neutron_vpnaas/services/vpn/device_drivers/cisco_csr_rest_client.py

@@ -15,12 +15,13 @@
 import time
 
 import netaddr
-from neutron.i18n import _LE, _LW
 from oslo_log import log as logging
 from oslo_serialization import jsonutils
 import requests
 from requests import exceptions as r_exc
 
+from neutron_vpnaas._i18n import _LE, _LW
+
 
 TIMEOUT = 20.0
 

neutron_vpnaas/services/vpn/device_drivers/cisco_ipsec.py

@@ -18,7 +18,6 @@ import requests
 from neutron.common import exceptions
 from neutron.common import rpc as n_rpc
 from neutron import context as ctx
-from neutron.i18n import _LE, _LI, _LW
 from neutron.plugins.common import constants
 from neutron.plugins.common import utils as plugin_utils
 from oslo_concurrency import lockutils
@@ -27,6 +26,7 @@ from oslo_log import log as logging
 import oslo_messaging
 from oslo_service import loopingcall
 
+from neutron_vpnaas._i18n import _LE, _LI, _LW
 from neutron_vpnaas.services.vpn.common import topics
 from neutron_vpnaas.services.vpn import device_drivers
 from neutron_vpnaas.services.vpn.device_drivers import (

neutron_vpnaas/services/vpn/device_drivers/ipsec.py

@@ -28,7 +28,6 @@ from neutron.api.v2 import attributes
 from neutron.common import rpc as n_rpc
 from neutron.common import utils as n_utils
 from neutron import context
-from neutron.i18n import _LE, _LI, _LW
 from neutron.plugins.common import constants
 from neutron.plugins.common import utils as plugin_utils
 from oslo_concurrency import lockutils
@@ -37,6 +36,7 @@ from oslo_log import log as logging
 import oslo_messaging
 from oslo_service import loopingcall
 
+from neutron_vpnaas._i18n import _LE, _LI, _LW
 from neutron_vpnaas.extensions import vpnaas
 from neutron_vpnaas.services.vpn.common import topics
 from neutron_vpnaas.services.vpn import device_drivers

neutron_vpnaas/services/vpn/device_drivers/vyatta_ipsec.py

@@ -21,7 +21,6 @@ from networking_brocade.vyatta.common import vrouter_config
 from networking_brocade.vyatta.vpn import config as vyatta_vpn_config
 from neutron.common import rpc as n_rpc
 from neutron import context as n_ctx
-from neutron.i18n import _LE, _LW
 from oslo_config import cfg
 from oslo_log import log as logging
 import oslo_messaging as messaging
@@ -29,6 +28,7 @@ from oslo_service import loopingcall
 from oslo_service import periodic_task
 import six
 
+from neutron_vpnaas._i18n import _LE, _LW
 from neutron_vpnaas.services.vpn.common import topics
 from neutron_vpnaas.services.vpn import device_drivers
 

neutron_vpnaas/services/vpn/plugin.py

@@ -15,12 +15,12 @@
 #    under the License.
 
 from neutron.db import servicetype_db as st_db
-from neutron.i18n import _LI
 from neutron.plugins.common import constants
 from neutron.services import provider_configuration as pconf
 from neutron.services import service_base
 from oslo_log import log as logging
 
+from neutron_vpnaas._i18n import _LI
 from neutron_vpnaas.db.vpn import vpn_db
 
 LOG = logging.getLogger(__name__)

neutron_vpnaas/services/vpn/service_drivers/cisco_csr_db.py

@@ -14,12 +14,12 @@
 
 from neutron.common import exceptions
 from neutron.db import model_base
-from neutron.i18n import _LI
 from oslo_db import exception as db_exc
 from oslo_log import log as logging
 import sqlalchemy as sa
 from sqlalchemy.orm import exc as sql_exc
 
+from neutron_vpnaas._i18n import _LI
 from neutron_vpnaas.db.vpn import vpn_models
 
 LOG = logging.getLogger(__name__)

rally-jobs/plugins/test_vpn_connectivity.py

@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from neutron.i18n import _LI
+from neutron_vpnaas._i18n import _LI
 from rally.common import log as logging
 
 from rally.task import scenario

tox.ini

@@ -107,5 +107,5 @@ builtins = _
 exclude = .venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build,tools,.ropeproject,rally-scenarios
 
 [hacking]
-import_exceptions = neutron.i18n
+import_exceptions = neutron_vpnaas._i18n
 local-check-factory = neutron.hacking.checks.factory