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# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
# This software is distributed under the terms and conditions of the 'Apache-2.0'
# license which can be found in the file 'LICENSE' in this package distribution
# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
from uuid import uuid4
import logging
from python_moonutilities import exceptions
from python_moonutilities.security_functions import filter_input, enforce
from python_moondb.api.managers import Managers
import copy
logger = logging.getLogger("moon.db.api.model")
class ModelManager(Managers):
def __init__(self, connector=None):
self.driver = connector.driver
Managers.ModelManager = self
@enforce(("read", "write"), "models")
def update_model(self, user_id, model_id, value):
if model_id not in self.driver.get_models(model_id=model_id):
raise exceptions.ModelUnknown
if not value['name'].strip():
raise exceptions.ModelContentError('Model name invalid')
if 'meta_rules' not in value:
raise exceptions.MetaRuleUnknown
if not value['name']:
raise exceptions.ModelContentError
model = self.get_models(user_id=user_id, model_id=model_id)
model = model[next(iter(model))]
if ((model['meta_rules'] and value['meta_rules'] and model['meta_rules'] != value[
'meta_rules']) \
or (model['meta_rules'] and not value['meta_rules'])):
policies = Managers.PolicyManager.get_policies(user_id=user_id)
for policy_id in policies:
if policies[policy_id]["model_id"] == model_id:
raise exceptions.DeleteModelWithPolicy
if value and 'meta_rules' in value:
for meta_rule_id in value['meta_rules']:
if not self.driver.get_meta_rules(meta_rule_id=meta_rule_id):
raise exceptions.MetaRuleUnknown
return self.driver.update_model(model_id=model_id, value=value)
@enforce(("read", "write"), "models")
def delete_model(self, user_id, model_id):
if model_id not in self.driver.get_models(model_id=model_id):
raise exceptions.ModelUnknown
# TODO (asteroide): check that no policy is connected to this model
policies = Managers.PolicyManager.get_policies(user_id=user_id)
for policy in policies:
if policies[policy]['model_id'] == model_id:
raise exceptions.DeleteModelWithPolicy
return self.driver.delete_model(model_id=model_id)
@enforce(("read", "write"), "models")
def add_model(self, user_id, model_id=None, value=None):
if not value['name']:
raise exceptions.ModelContentError
if not value['name'].strip():
raise exceptions.ModelContentError('Model name invalid')
models = self.driver.get_models()
if model_id in models:
raise exceptions.ModelExisting
for model in models:
if models[model]['name'] == value['name']:
raise exceptions.ModelExisting("Model Name Existed")
same_meta_rule_counter = 0
for meta_rule_id in models[model]['meta_rules']:
if meta_rule_id in value['meta_rules']:
same_meta_rule_counter += 1
if same_meta_rule_counter == len(value['meta_rules']) and \
len(models[model]['meta_rules']) == len(value['meta_rules']):
raise exceptions.ModelExisting("Meta Rules List Existed in another Model")
if not model_id:
model_id = uuid4().hex
if value and 'meta_rules' in value:
for meta_rule_id in value['meta_rules']:
if not meta_rule_id:
raise exceptions.MetaRuleUnknown
meta_rule = self.driver.get_meta_rules(meta_rule_id=meta_rule_id)
if not meta_rule:
raise exceptions.MetaRuleUnknown
meta_rule_content = meta_rule[next(iter(meta_rule))]
if (not meta_rule_content['subject_categories']) or (
not meta_rule_content['object_categories']) or (
not meta_rule_content['action_categories']):
raise exceptions.MetaRuleContentError
return self.driver.add_model(model_id=model_id, value=value)
@enforce("read", "models")
def get_models(self, user_id, model_id=None):
return self.driver.get_models(model_id=model_id)
@enforce(("read", "write"), "meta_rules")
def update_meta_rule(self, user_id, meta_rule_id, value):
meta_rules=self.driver.get_meta_rules()
if not meta_rule_id or meta_rule_id not in meta_rules:
raise exceptions.MetaRuleUnknown
self.__check_meta_rule_dependencies(user_id=user_id, meta_rule_id=meta_rule_id)
if value:
if 'subject_categories' in value:
for subject_category_id in value['subject_categories']:
if not subject_category_id or not self.driver.get_subject_categories(
category_id=subject_category_id):
raise exceptions.SubjectCategoryUnknown
if 'object_categories' in value:
for object_category_id in value['object_categories']:
if not object_category_id or not self.driver.get_object_categories(
category_id=object_category_id):
raise exceptions.ObjectCategoryUnknown
if 'action_categories' in value:
for action_category_id in value['action_categories']:
if not action_category_id or not self.driver.get_action_categories(
category_id=action_category_id):
raise exceptions.ActionCategoryUnknown
for meta_rule_obj_id in meta_rules:
counter_matched_list = 0
counter_matched_list += self.check_combination(meta_rules[meta_rule_obj_id]['subject_categories'],
value['subject_categories'])
counter_matched_list += self.check_combination(meta_rules[meta_rule_obj_id]['object_categories'],
value['object_categories'])
counter_matched_list += self.check_combination(meta_rules[meta_rule_obj_id]['action_categories'],
value['action_categories'])
if counter_matched_list == 3 and meta_rule_obj_id!=meta_rule_id:
raise exceptions.MetaRuleExisting("Same categories combination existed")
return self.driver.set_meta_rule(meta_rule_id=meta_rule_id, value=value)
def __check_meta_rule_dependencies(self, user_id, meta_rule_id):
policies = Managers.PolicyManager.get_policies(user_id=user_id)
for policy_id in policies:
rules = Managers.PolicyManager.get_rules(user_id=user_id, policy_id=policy_id,
meta_rule_id=meta_rule_id)
if len(rules['rules']):
raise exceptions.MetaRuleUpdateError
@enforce("read", "meta_rules")
def get_meta_rules(self, user_id, meta_rule_id=None):
return self.driver.get_meta_rules(meta_rule_id=meta_rule_id)
@enforce(("read", "write"), "meta_rules")
def add_meta_rule(self, user_id, meta_rule_id=None, value=None):
if not value['name']:
raise exceptions.MetaRuleContentError
meta_rules = self.driver.get_meta_rules()
if meta_rule_id in meta_rules:
raise exceptions.MetaRuleExisting
if value:
if 'subject_categories' in value:
for subject_category_id in value['subject_categories']:
if not self.driver.get_subject_categories(category_id=subject_category_id):
raise exceptions.SubjectCategoryUnknown
if 'object_categories' in value:
for object_category_id in value['object_categories']:
if not self.driver.get_object_categories(category_id=object_category_id):
raise exceptions.ObjectCategoryUnknown
if 'action_categories' in value:
for action_category_id in value['action_categories']:
if not self.driver.get_action_categories(category_id=action_category_id):
raise exceptions.ActionCategoryUnknown
for meta_rule_obj_id in meta_rules:
counter_matched_list = 0
counter_matched_list += self.check_combination(meta_rules[meta_rule_obj_id]['subject_categories'],
value['subject_categories'])
counter_matched_list += self.check_combination(meta_rules[meta_rule_obj_id]['object_categories'],
value['object_categories'])
counter_matched_list += self.check_combination(meta_rules[meta_rule_obj_id]['action_categories'],
value['action_categories'])
if counter_matched_list == 3:
raise exceptions.MetaRuleExisting("Same categories combination existed")
return self.driver.set_meta_rule(meta_rule_id=meta_rule_id, value=value)
@enforce(("read", "write"), "meta_rules")
def check_combination(self, list_one, list_two):
counter_removed_items = 0
temp_list_two = copy.deepcopy(list_two)
for item in list_one:
if item in temp_list_two:
temp_list_two.remove(item)
counter_removed_items += 1
if counter_removed_items == len(list_two) and len(list_two) == len(list_one) and len(list_two):
return 1
return 0
@enforce(("read", "write"), "meta_rules")
def delete_meta_rule(self, user_id, meta_rule_id=None):
if meta_rule_id not in self.driver.get_meta_rules(meta_rule_id=meta_rule_id):
raise exceptions.MetaRuleUnknown
# TODO (asteroide): check and/or delete data and assignments and rules linked to that meta_rule
models = self.get_models(user_id=user_id)
for model_id in models:
for id in models[model_id]['meta_rules']:
if id == meta_rule_id:
raise exceptions.DeleteMetaRuleWithModel
return self.driver.delete_meta_rule(meta_rule_id=meta_rule_id)
@enforce("read", "meta_data")
def get_subject_categories(self, user_id, category_id=None):
return self.driver.get_subject_categories(category_id=category_id)
@enforce(("read", "write"), "meta_data")
def add_subject_category(self, user_id, category_id=None, value=None):
subject_categories = self.driver.get_subject_categories(category_id=category_id)
if not value['name']:
raise exceptions.CategoryNameInvalid
if category_id in subject_categories:
raise exceptions.SubjectCategoryExisting
return self.driver.add_subject_category(name=value["name"],
description=value["description"], uuid=category_id)
@enforce(("read", "write"), "meta_data")
def delete_subject_category(self, user_id, category_id):
# TODO (asteroide): delete all data linked to that category
# TODO (asteroide): delete all meta_rules linked to that category
if category_id not in self.driver.get_subject_categories(category_id=category_id):
raise exceptions.SubjectCategoryUnknown
meta_rules = self.get_meta_rules(user_id=user_id)
for meta_rule_id in meta_rules:
for subject_category_id in meta_rules[meta_rule_id]['subject_categories']:
logger.info(
"delete_subject_category {} {}".format(subject_category_id, meta_rule_id))
logger.info("delete_subject_category {}".format(meta_rules[meta_rule_id]))
if subject_category_id == category_id:
# has_rules = self.driver.is_meta_rule_has_rules(meta_rule_id)
# if has_rules:
raise exceptions.DeleteSubjectCategoryWithMetaRule
if self.driver.is_subject_category_has_assignment(category_id):
raise exceptions.DeleteCategoryWithAssignment
if self.driver.is_subject_data_exist(category_id=category_id):
raise exceptions.DeleteCategoryWithData
return self.driver.delete_subject_category(category_id=category_id)
@enforce("read", "meta_data")
def get_object_categories(self, user_id, category_id=None):
return self.driver.get_object_categories(category_id)
@enforce(("read", "write"), "meta_data")
def add_object_category(self, user_id, category_id=None, value=None):
if not value['name']:
raise exceptions.CategoryNameInvalid
object_categories = self.driver.get_object_categories(category_id=category_id)
if category_id in object_categories:
raise exceptions.ObjectCategoryExisting
return self.driver.add_object_category(name=value["name"], description=value["description"],
uuid=category_id)
@enforce(("read", "write"), "meta_data")
def delete_object_category(self, user_id, category_id):
# TODO (asteroide): delete all data linked to that category
# TODO (asteroide): delete all meta_rules linked to that category
if category_id not in self.driver.get_object_categories(category_id=category_id):
raise exceptions.ObjectCategoryUnknown
meta_rules = self.get_meta_rules(user_id=user_id)
for meta_rule_id in meta_rules:
for object_category_id in meta_rules[meta_rule_id]['object_categories']:
if object_category_id == category_id:
# has_rules = self.driver.is_meta_rule_has_rules(meta_rule_id)
# if has_rules:
raise exceptions.DeleteObjectCategoryWithMetaRule
if self.driver.is_object_category_has_assignment(category_id):
raise exceptions.DeleteCategoryWithAssignment
if self.driver.is_object_data_exist(category_id=category_id):
raise exceptions.DeleteCategoryWithData
return self.driver.delete_object_category(category_id=category_id)
@enforce("read", "meta_data")
def get_action_categories(self, user_id, category_id=None):
return self.driver.get_action_categories(category_id=category_id)
@enforce(("read", "write"), "meta_data")
def add_action_category(self, user_id, category_id=None, value=None):
if not value['name']:
raise exceptions.CategoryNameInvalid
action_categories = self.driver.get_action_categories(category_id=category_id)
if category_id in action_categories:
raise exceptions.ActionCategoryExisting
return self.driver.add_action_category(name=value["name"], description=value["description"],
uuid=category_id)
@enforce(("read", "write"), "meta_data")
def delete_action_category(self, user_id, category_id):
# TODO (asteroide): delete all data linked to that category
# TODO (asteroide): delete all meta_rules linked to that category
if category_id not in self.driver.get_action_categories(category_id=category_id):
raise exceptions.ActionCategoryUnknown
meta_rules = self.get_meta_rules(user_id=user_id)
for meta_rule_id in meta_rules:
for action_category_id in meta_rules[meta_rule_id]['action_categories']:
if action_category_id == category_id:
# has_rules = self.driver.is_meta_rule_has_rules(meta_rule_id)
# if has_rules:
raise exceptions.DeleteActionCategoryWithMetaRule
if self.driver.is_action_category_has_assignment(category_id):
raise exceptions.DeleteCategoryWithAssignment
if self.driver.is_action_data_exist(category_id=category_id):
raise exceptions.DeleteCategoryWithData
return self.driver.delete_action_category(category_id=category_id)
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