# -*- encoding: utf-8 -*-
# Copyright (c) 2016 b<>com
#
# Authors: Vincent FRANCOISE <vincent.francoise@b-com.com>
#
# 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 abc
import collections
from lxml import etree
from oslo_log import log
import six
from watcher.objects import base
from watcher.objects import fields as wfields
LOG = log.getLogger(__name__)
[docs]@six.add_metaclass(abc.ABCMeta)
class Element(base.WatcherObject, base.WatcherObjectDictCompat,
base.WatcherComparableObject):
# Initial version
VERSION = '1.0'
fields = {}
def __init__(self, context=None, **kwargs):
for name, field in self.fields.items():
# The idea here is to force the initialization of unspecified
# fields that have a default value
if (name not in kwargs and not field.nullable and
field.default != wfields.UnspecifiedDefault):
kwargs[name] = field.default
super(Element, self).__init__(context, **kwargs)
[docs] def as_xml_element(self):
sorted_fieldmap = []
for field in self.fields:
try:
value = str(self[field])
sorted_fieldmap.append((field, value))
except Exception as exc:
LOG.exception(exc)
attrib = collections.OrderedDict(sorted_fieldmap)
element_name = self.__class__.__name__
instance_el = etree.Element(element_name, attrib=attrib)
return instance_el
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