murano/murano/dsl/typespec.py

65 lines
1.9 KiB
Python

# Copyright (c) 2014 Mirantis, Inc.
#
# 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.
from murano.dsl import exceptions
from murano.dsl import type_scheme
class PropertyUsages(object):
In = 'In'
Out = 'Out'
InOut = 'InOut'
Runtime = 'Runtime'
Const = 'Const'
Config = 'Config'
All = set([In, Out, InOut, Runtime, Const, Config])
Writable = set([Out, InOut, Runtime])
class Spec(object):
def __init__(self, declaration):
self._contract = type_scheme.TypeScheme(declaration['Contract'])
self._usage = declaration.get('Usage') or 'In'
self._default = declaration.get('Default')
self._has_default = 'Default' in declaration
if self._usage not in PropertyUsages.All:
raise exceptions.DslSyntaxError(
'Unknown type {0}. Must be one of ({1})'.format(
self._usage, ', '.join(PropertyUsages.All)))
def validate(self, value, context, this, owner, default=None):
if default is None:
default = self.default
return self._contract(value, context, this, owner, default)
@property
def default(self):
return self._default
@property
def has_default(self):
return self._has_default
@property
def usage(self):
return self._usage
class PropertySpec(Spec):
pass
class ArgumentSpec(Spec):
pass