c7eca3fbd8
String interpolation should be delayed to be handled by the
logging code, rather than being done at the point of the
logging call.
So we should use-
LOG.info(_LI('some message: variable=%s'), variable)
instead of
LOG.info(_LI('some message: variable=%s') % variable)
Reference: http://docs.openstack.org/developer/oslo.i18n/guidelines.html
Change-Id: I409358d9e35813f1875993b96fce86a0e2bc940b
275 lines
11 KiB
Python
275 lines
11 KiB
Python
# Copyright 2014 Hewlett-Packard Development Company, L.P.
|
|
#
|
|
# 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 logging
|
|
|
|
import six
|
|
|
|
from designate import objects
|
|
from designate import exceptions
|
|
from designate.i18n import _LE
|
|
from designate.i18n import _LI
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class DesignateObjectAdapterMetaclass(type):
|
|
|
|
def __init__(cls, names, bases, dict_):
|
|
if not hasattr(cls, '_adapter_classes'):
|
|
cls._adapter_classes = {}
|
|
return
|
|
|
|
key = '%s:%s' % (cls.adapter_format(), cls.adapter_object())
|
|
|
|
if key not in cls._adapter_classes:
|
|
cls._adapter_classes[key] = cls
|
|
else:
|
|
raise Exception(
|
|
"Duplicate DesignateAdapterObject with"
|
|
" format '%(format)s and object %(object)s'" %
|
|
{'format': cls.adapter_format(),
|
|
'object': cls.adapter_object()}
|
|
)
|
|
|
|
|
|
@six.add_metaclass(DesignateObjectAdapterMetaclass)
|
|
class DesignateAdapter(object):
|
|
"""docstring for DesignateObjectAdapter"""
|
|
|
|
ADAPTER_OBJECT = objects.DesignateObject
|
|
|
|
@classmethod
|
|
def adapter_format(cls):
|
|
return cls.ADAPTER_FORMAT
|
|
|
|
@classmethod
|
|
def adapter_object(cls):
|
|
return cls.ADAPTER_OBJECT.obj_name()
|
|
|
|
@classmethod
|
|
def get_object_adapter(cls, format_, object):
|
|
if isinstance(object, objects.DesignateObject):
|
|
key = '%s:%s' % (format_, object.obj_name())
|
|
else:
|
|
key = '%s:%s' % (format_, object)
|
|
try:
|
|
return cls._adapter_classes[key]
|
|
except KeyError as e:
|
|
keys = six.text_type(e).split(':')
|
|
msg = "Adapter for %(object)s to format %(format)s not found" % {
|
|
"object": keys[1],
|
|
"format": keys[0]
|
|
}
|
|
raise exceptions.AdapterNotFound(msg)
|
|
|
|
#####################
|
|
# Rendering methods #
|
|
#####################
|
|
|
|
@classmethod
|
|
def render(cls, format_, object, *args, **kwargs):
|
|
|
|
if isinstance(object, objects.ListObjectMixin):
|
|
# type_ = 'list'
|
|
return cls.get_object_adapter(
|
|
format_, object)._render_list(object, *args, **kwargs)
|
|
else:
|
|
# type_ = 'object'
|
|
return cls.get_object_adapter(
|
|
format_, object)._render_object(object, *args, **kwargs)
|
|
|
|
@classmethod
|
|
def _render_object(cls, object, *args, **kwargs):
|
|
# The dict we will return to be rendered to JSON / output format
|
|
r_obj = {}
|
|
# Loop over all fields that are supposed to be output
|
|
for key, value in cls.MODIFICATIONS['fields'].items():
|
|
# Get properties for this field
|
|
field_props = cls.MODIFICATIONS['fields'][key]
|
|
# Check if it has to be renamed
|
|
if field_props.get('rename', False):
|
|
obj = getattr(object, field_props.get('rename'))
|
|
# if rename is specified we need to change the key
|
|
obj_key = field_props.get('rename')
|
|
else:
|
|
# if not, move on
|
|
obj = getattr(object, key, None)
|
|
obj_key = key
|
|
# Check if this item is a relation (another DesignateObject that
|
|
# will need to be converted itself
|
|
if object.FIELDS.get(obj_key, {}).get('relation'):
|
|
# Get a adapter for the nested object
|
|
# Get the class the object is and get its adapter, then set
|
|
# the item in the dict to the output
|
|
r_obj[key] = cls.get_object_adapter(
|
|
cls.ADAPTER_FORMAT,
|
|
object.FIELDS[obj_key].get('relation_cls')).render(
|
|
cls.ADAPTER_FORMAT, obj, *args, **kwargs)
|
|
else:
|
|
# Just attach the damn item if there is no weird edge cases
|
|
r_obj[key] = obj
|
|
# Send it back
|
|
return r_obj
|
|
|
|
@classmethod
|
|
def _render_list(cls, list_object, *args, **kwargs):
|
|
# The list we will return to be rendered to JSON / output format
|
|
r_list = []
|
|
# iterate and convert each DesignateObject in the list, and append to
|
|
# the object we are returning
|
|
for object in list_object:
|
|
r_list.append(cls.get_object_adapter(
|
|
cls.ADAPTER_FORMAT,
|
|
object).render(cls.ADAPTER_FORMAT, object, *args, **kwargs))
|
|
return {cls.MODIFICATIONS['options']['collection_name']: r_list}
|
|
|
|
#####################
|
|
# Parsing methods #
|
|
#####################
|
|
|
|
@classmethod
|
|
def parse(cls, format_, values, output_object, *args, **kwargs):
|
|
|
|
LOG.debug("Creating %s object with values %r" %
|
|
(output_object.obj_name(), values))
|
|
|
|
try:
|
|
if isinstance(output_object, objects.ListObjectMixin):
|
|
# type_ = 'list'
|
|
return cls.get_object_adapter(
|
|
format_,
|
|
output_object)._parse_list(
|
|
values, output_object, *args, **kwargs)
|
|
else:
|
|
# type_ = 'object'
|
|
return cls.get_object_adapter(
|
|
format_,
|
|
output_object)._parse_object(
|
|
values, output_object, *args, **kwargs)
|
|
|
|
except TypeError as e:
|
|
LOG.exception(_LE("TypeError creating %(name)s with values"
|
|
" %(values)r") %
|
|
{"name": output_object.obj_name(), "values": values})
|
|
error_message = (u'Provided object is not valid. '
|
|
u'Got a TypeError with message {}'.format(
|
|
six.text_type(e)))
|
|
raise exceptions.InvalidObject(error_message)
|
|
|
|
except AttributeError as e:
|
|
LOG.exception(_LE("AttributeError creating %(name)s "
|
|
"with values %(values)r") %
|
|
{"name": output_object.obj_name(), "values": values})
|
|
error_message = (u'Provided object is not valid. '
|
|
u'Got an AttributeError with message {}'.format(
|
|
six.text_type(e)))
|
|
raise exceptions.InvalidObject(error_message)
|
|
|
|
except exceptions.InvalidObject:
|
|
LOG.info(_LI("InvalidObject creating %(name)s with "
|
|
"values %(values)r"),
|
|
{"name": output_object.obj_name(), "values": values})
|
|
raise
|
|
|
|
except Exception as e:
|
|
LOG.exception(_LE("Exception creating %(name)s with "
|
|
"values %(values)r") %
|
|
{"name": output_object.obj_name(), "values": values})
|
|
error_message = (u'Provided object is not valid. '
|
|
u'Got a {} error with message {}'.format(
|
|
type(e).__name__, six.text_type(e)))
|
|
raise exceptions.InvalidObject(error_message)
|
|
|
|
@classmethod
|
|
def _parse_object(cls, values, output_object, *args, **kwargs):
|
|
error_keys = []
|
|
|
|
for key, value in values.items():
|
|
if key in cls.MODIFICATIONS['fields']:
|
|
# No rename needed
|
|
obj_key = key
|
|
# This item may need to be translated
|
|
if cls.MODIFICATIONS['fields'][key].get('rename', False):
|
|
obj_key = cls.MODIFICATIONS['fields'][key].get('rename')
|
|
|
|
##############################################################
|
|
# TODO(graham): Remove this section of code when validation #
|
|
# is moved into DesignateObjects properly #
|
|
##############################################################
|
|
|
|
# Check if the field should be allowed change after it is
|
|
# initially set (eg zone name)
|
|
if cls.MODIFICATIONS['fields'][key].get('immutable', False):
|
|
if getattr(output_object, obj_key, False) and \
|
|
getattr(output_object, obj_key) != value:
|
|
error_keys.append(key)
|
|
break
|
|
# Is this field a read only field
|
|
elif cls.MODIFICATIONS['fields'][key].get('read_only', True) \
|
|
and getattr(output_object, obj_key) != value:
|
|
error_keys.append(key)
|
|
break
|
|
|
|
# Check if the key is a nested object
|
|
if output_object.FIELDS.get(obj_key, {}).get(
|
|
'relation', False):
|
|
# Get the right class name
|
|
obj_class_name = output_object.FIELDS.get(
|
|
obj_key, {}).get('relation_cls')
|
|
# Get the an instance of it
|
|
obj_class = \
|
|
objects.DesignateObject.obj_cls_from_name(
|
|
obj_class_name)
|
|
# Get the adapted object
|
|
obj = \
|
|
cls.get_object_adapter(
|
|
cls.ADAPTER_FORMAT, obj_class_name).parse(
|
|
value, obj_class())
|
|
# Set the object on the main object
|
|
setattr(output_object, obj_key, obj)
|
|
else:
|
|
# No nested objects here, just set the value
|
|
setattr(output_object, obj_key, value)
|
|
else:
|
|
# We got an extra key
|
|
error_keys.append(key)
|
|
|
|
if error_keys:
|
|
error_message = str.format(
|
|
'Provided object does not match schema. Keys {0} are not '
|
|
'valid for {1}',
|
|
error_keys, cls.MODIFICATIONS['options']['resource_name'])
|
|
|
|
raise exceptions.InvalidObject(error_message)
|
|
|
|
return output_object
|
|
|
|
@classmethod
|
|
def _parse_list(cls, values, output_object, *args, **kwargs):
|
|
|
|
for item in values:
|
|
# Add the object to the list
|
|
output_object.append(
|
|
# Get the right Adapter
|
|
cls.get_object_adapter(
|
|
cls.ADAPTER_FORMAT,
|
|
# This gets the internal type of the list, and parses it
|
|
# We need to do `get_object_adapter` as we need a new
|
|
# instance of the Adapter
|
|
output_object.LIST_ITEM_TYPE()).parse(
|
|
item, output_object.LIST_ITEM_TYPE()))
|
|
|
|
# Return the filled list
|
|
return output_object
|