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# -*- coding: utf8 -*-
# ============LICENSE_START=======================================================
# org.onap.vvp/validation-scripts
# ===================================================================
# Copyright © 2020 AT&T Intellectual Property. All rights reserved.
# ===================================================================
#
# Unless otherwise specified, all software contained herein is licensed
# under the Apache License, Version 2.0 (the "License");
# you may not use this software 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.
#
#
#
# Unless otherwise specified, all documentation contained herein is licensed
# under the Creative Commons License, Attribution 4.0 Intl. (the "License");
# you may not use this documentation except in compliance with the License.
# You may obtain a copy of the License at
#
# https://creativecommons.org/licenses/by/4.0/
#
# Unless required by applicable law or agreed to in writing, documentation
# 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.
#
# ============LICENSE_END============================================
import inspect
from abc import ABC, abstractmethod
from onap_client.exceptions import InvalidSpecException
class Resource(ABC):
resource_name = "abstract"
spec = {}
def __init__(self, input):
self.attributes = {}
attributes = self._create(input)
self.resolve_attributes(attributes)
self._post_create()
def __getattr__(self, attr):
return self.attributes.get(attr, None)
@abstractmethod
def _create(self, input):
pass
@abstractmethod
def _post_create(self):
pass
@abstractmethod
def _submit(self):
pass
@classmethod
def validate(cls, input, spec=None):
"""Validates that an input dictionary spec
is valid according to a provided class spec.
Recursively walksdown and checks if all required attributes are present, and
attribute types match spec types.
Returns complete spec with all attributes.
"""
valid_spec = {}
if not isinstance(input, dict):
raise InvalidSpecException("input spec was not a dictionary")
if not spec:
spec = cls.spec
for k, v in input.items():
if not spec.get(k):
raise InvalidSpecException("Unknown property found: {}".format(k))
for k, v in spec.items():
property_name = k
property_type = v.get("type")
property_required = v.get("required")
property_default = v.get("default", default_empty_value(property_type))
input_property = validate_property(
input, property_name, property_required, property_default, property_type
)
if (
property_type == dict
and input_property != property_default
and v.get("nested")
):
property_value = cls.validate(input_property, v.get("nested"))
elif property_type == list:
list_property_type = v.get("list_item")
list_spec = []
for item in input_property:
if type(item) != list_property_type:
raise InvalidSpecException(
"list item {} not match type {}".format(
item, list_property_type
)
)
if list_property_type == str:
list_spec.insert(0, item)
else:
list_spec.insert(0, cls.validate(item, v.get("nested", {})))
property_value = list_spec
else:
property_value = input_property
valid_spec[property_name] = property_value
return valid_spec
@classmethod
def create_from_spec(cls, spec, submit=True):
input_args = []
arguments = inspect.getfullargspec(cls).args
arguments.pop(0)
for argument in arguments:
input_args.append(spec.get(argument))
instance = cls(*input_args)
if submit:
instance._submit()
return instance
def resolve_attributes(self, attributes):
for key, val in attributes.items():
self.attributes[key] = val
def print(self):
for k, v in self.attributes.items():
val = str(v)
value = val[:50] + "..." if len(val) > 50 else val
print("{}: {}".format(k, value))
def validate_property(
input_spec, property_name, property_required, property_default, property_type
):
input_property = input_spec.get(property_name)
if not input_property:
if property_required:
raise InvalidSpecException(
"required property {} not found in input spec".format(property_name)
)
else:
input_property = property_default
elif type(input_property) != property_type:
raise InvalidSpecException(
"input property {} not match type {}".format(property_name, property_type)
)
return input_property
def default_empty_value(property_type):
if property_type == str:
return None
elif property_type == list:
return []
elif property_type == dict:
return {}
elif property_type == bool:
return False
else:
return None
|
