old_contents: # Copyright 2013 Canonical Ltd
  # 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.
  
  """Render Vendordata as stored in configured file."""
  
  import errno
  
  from oslo_config import cfg
  from oslo_log import log as logging
  from oslo_serialization import jsonutils
  
  from nova.api.metadata import base
  from nova.i18n import _LW
  
  file_opt = cfg.StrOpt('vendordata_jsonfile_path',
                        help='File to load JSON formatted vendor data from')
  
  CONF = cfg.CONF
  CONF.register_opt(file_opt)
  LOG = logging.getLogger(__name__)
  
  
  class JsonFileVendorData(base.VendorDataDriver):
      def __init__(self, *args, **kwargs):
          super(JsonFileVendorData, self).__init__(*args, **kwargs)
          data = {}
          fpath = CONF.vendordata_jsonfile_path
          logprefix = "%s[%s]: " % (file_opt.name, fpath)
          if fpath:
              try:
                  with open(fpath, "r") as fp:
                      data = jsonutils.load(fp)
              except IOError as e:
                  if e.errno == errno.ENOENT:
                      LOG.warning(_LW("%(logprefix)sfile does not exist"),
                                  {'logprefix': logprefix})
                  else:
                      LOG.warning(_LW("%(logprefix)unexpected IOError when "
                                      "reading"), {'logprefix': logprefix})
                  raise e
              except ValueError:
                  LOG.warning(_LW("%(logprefix)sfailed to load json"),
                              {'logprefix': logprefix})
                  raise
  
          self._data = data
  
      def get(self):
          return self._data
  
new_contents: # Copyright 2013 Canonical Ltd
  # 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.
  
  """Render Vendordata as stored in configured file."""
  
  import errno
  
  from oslo_config import cfg
  from oslo_log import log as logging
  from oslo_serialization import jsonutils
  
  from nova.api.metadata import base
  from nova.i18n import _LW
  
  file_opt = cfg.StrOpt('vendordata_jsonfile_path',
                        help='File to load JSON formatted vendor data from')
  
  CONF = cfg.CONF
  CONF.register_opt(file_opt)
  LOG = logging.getLogger(__name__)
  
  
  class JsonFileVendorData(base.VendorDataDriver):
      def __init__(self, *args, **kwargs):
          super(JsonFileVendorData, self).__init__(*args, **kwargs)
          data = {}
          fpath = CONF.vendordata_jsonfile_path
          logprefix = "%s[%s]:" % (file_opt.name, fpath)
          if fpath:
              try:
                  with open(fpath, "r") as fp:
                      data = jsonutils.load(fp)
              except IOError as e:
                  if e.errno == errno.ENOENT:
                      LOG.warning(_LW("%(logprefix)s file does not exist"),
                                  {'logprefix': logprefix})
                  else:
                      LOG.warning(_LW("%(logprefix)s unexpected IOError when "
                                      "reading"), {'logprefix': logprefix})
                  raise e
              except ValueError:
                  LOG.warning(_LW("%(logprefix)s failed to load json"),
                              {'logprefix': logprefix})
                  raise
  
          self._data = data
  
      def get(self):
          return self._data
  
subject: Fix string formatting in api/metadata/vendordata_json.py