157 lines
5.0 KiB
Python
157 lines
5.0 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Object models for Drydock design and task data."""
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import importlib
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from copy import deepcopy
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def register_all():
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# NOTE(sh8121att) - Import all versioned objects so
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# they are available via RPC. Any new object definitions
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# need to be added here.
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importlib.import_module('drydock_provisioner.objects.network')
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importlib.import_module('drydock_provisioner.objects.node')
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importlib.import_module('drydock_provisioner.objects.hostprofile')
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importlib.import_module('drydock_provisioner.objects.hwprofile')
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importlib.import_module('drydock_provisioner.objects.site')
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importlib.import_module('drydock_provisioner.objects.promenade')
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importlib.import_module('drydock_provisioner.objects.rack')
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importlib.import_module('drydock_provisioner.objects.bootaction')
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importlib.import_module('drydock_provisioner.objects.task')
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importlib.import_module('drydock_provisioner.objects.builddata')
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importlib.import_module('drydock_provisioner.objects.validation')
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# Utility class for calculating inheritance
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class Utils(object):
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"""
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apply_field_inheritance - apply inheritance rules to a single field value
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param child_field - value of the child field, or the field receiving
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the inheritance
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param parent_field - value of the parent field, or the field supplying
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the inheritance
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return the correct value for child_field based on the inheritance algorithm
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Inheritance algorithm
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1. If child_field is not None, '!' for string vals or -1 for numeric
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vals retain the value
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of child_field
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2. If child_field is '!' return None to unset the field value
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3. If child_field is -1 return None to unset the field value
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4. If child_field is None return parent_field
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"""
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@staticmethod
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def apply_field_inheritance(child_field, parent_field):
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if child_field is not None:
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if child_field != '!' and child_field != -1:
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return child_field
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else:
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return None
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else:
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return parent_field
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"""
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merge_lists - apply inheritance rules to a list of simple values
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param child_list - list of values from the child
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param parent_list - list of values from the parent
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return a merged list with child values taking prority
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1. All members in the child list not starting with '!'
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2. If a member in the parent list has a corresponding member in the
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chid list prefixed with '!' it is removed
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3. All remaining members of the parent list
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"""
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@staticmethod
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def merge_lists(child_list, parent_list):
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if child_list is None:
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return parent_list
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if parent_list is None:
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return child_list
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effective_list = []
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try:
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# Probably should handle non-string values
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effective_list.extend(
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filter(lambda x: not x.startswith("!"), child_list))
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effective_list.extend(
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filter(lambda x: ("!" + x) not in child_list,
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filter(lambda x: x not in effective_list, parent_list)))
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except TypeError:
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raise TypeError("Error iterating list argument")
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return effective_list
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"""
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merge_dicts - apply inheritance rules to a dict
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param child_dict - dict of k:v from child
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param parent_dict - dict of k:v from the parent
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return a merged dict with child values taking prority
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1. All members in the child dict with a key not starting with '!'
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2. If a member in the parent dict has a corresponding member in the
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chid dict where the key is prefixed with '!' it is removed
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3. All remaining members of the parent dict
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"""
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@staticmethod
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def merge_dicts(child_dict, parent_dict):
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if child_dict is None:
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return parent_dict
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if parent_dict is None:
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return child_dict
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effective_dict = {}
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try:
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# Probably should handle non-string keys
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use_keys = filter(lambda x: ("!" + x) not in child_dict.keys(),
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parent_dict)
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for k in use_keys:
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effective_dict[k] = deepcopy(parent_dict[k])
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use_keys = filter(lambda x: not x.startswith("!"), child_dict)
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for k in use_keys:
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effective_dict[k] = deepcopy(child_dict[k])
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except TypeError:
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raise TypeError("Error iterating dict argument")
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return effective_dict
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