#
# 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 heat.common import exception
from heat.common.i18n import _
from heat.engine import constraints as constr
from heat.engine import parameters
PARAM_CONSTRAINTS = (
DESCRIPTION, LENGTH, RANGE, MODULO, ALLOWED_VALUES, ALLOWED_PATTERN,
CUSTOM_CONSTRAINT,
) = (
'description', 'length', 'range', 'modulo', 'allowed_values',
'allowed_pattern', 'custom_constraint',
)
RANGE_KEYS = (MIN, MAX) = ('min', 'max')
MODULO_KEYS = (STEP, OFFSET) = ('step', 'offset')
[docs]
class HOTParamSchema(parameters.Schema):
"""HOT parameter schema."""
KEYS = (
TYPE, DESCRIPTION, DEFAULT, SCHEMA, CONSTRAINTS,
HIDDEN, LABEL, IMMUTABLE
) = (
'type', 'description', 'default', 'schema', 'constraints',
'hidden', 'label', 'immutable'
)
# For Parameters the type name for Schema.LIST is comma_delimited_list
# and the type name for Schema.MAP is json
TYPES = (
STRING, NUMBER, LIST, MAP, BOOLEAN,
) = (
'string', 'number', 'comma_delimited_list', 'json', 'boolean',
)
PARAMETER_KEYS = KEYS
@classmethod
def _constraint_from_def(cls, constraint):
desc = constraint.get(DESCRIPTION)
if RANGE in constraint:
cdef = constraint.get(RANGE)
cls._check_dict(cdef, RANGE_KEYS, 'range constraint')
return constr.Range(parameters.Schema.get_num(MIN, cdef),
parameters.Schema.get_num(MAX, cdef),
desc)
elif LENGTH in constraint:
cdef = constraint.get(LENGTH)
cls._check_dict(cdef, RANGE_KEYS, 'length constraint')
return constr.Length(parameters.Schema.get_num(MIN, cdef),
parameters.Schema.get_num(MAX, cdef),
desc)
elif ALLOWED_VALUES in constraint:
cdef = constraint.get(ALLOWED_VALUES)
return constr.AllowedValues(cdef, desc)
elif ALLOWED_PATTERN in constraint:
cdef = constraint.get(ALLOWED_PATTERN)
return constr.AllowedPattern(cdef, desc)
elif CUSTOM_CONSTRAINT in constraint:
cdef = constraint.get(CUSTOM_CONSTRAINT)
return constr.CustomConstraint(cdef, desc)
else:
raise exception.InvalidSchemaError(
message=_("No constraint expressed"))
@classmethod
def _constraints(cls, param_name, schema_dict):
constraints = schema_dict.get(cls.CONSTRAINTS)
if constraints is None:
return
if not isinstance(constraints, list):
raise exception.InvalidSchemaError(
message=_("Invalid parameter constraints for parameter "
"%s, expected a list") % param_name)
for constraint in constraints:
cls._check_dict(constraint, PARAM_CONSTRAINTS,
'parameter constraints')
yield cls._constraint_from_def(constraint)
[docs]
@classmethod
def from_dict(cls, param_name, schema_dict):
"""Return a Parameter Schema object from a legacy schema dictionary.
:param param_name: name of the parameter owning the schema; used
for more verbose logging
:type param_name: str
"""
cls._validate_dict(param_name, schema_dict)
# make update_allowed true by default on TemplateResources
# as the template should deal with this.
return cls(schema_dict[cls.TYPE],
description=schema_dict.get(HOTParamSchema.DESCRIPTION),
default=schema_dict.get(HOTParamSchema.DEFAULT),
constraints=list(cls._constraints(param_name, schema_dict)),
hidden=schema_dict.get(HOTParamSchema.HIDDEN, False),
label=schema_dict.get(HOTParamSchema.LABEL),
immutable=schema_dict.get(HOTParamSchema.IMMUTABLE, False))
[docs]
class HOTParamSchema20170224(HOTParamSchema):
@classmethod
def _constraint_from_def(cls, constraint):
desc = constraint.get(DESCRIPTION)
if MODULO in constraint:
cdef = constraint.get(MODULO)
cls._check_dict(cdef, MODULO_KEYS, 'modulo constraint')
return constr.Modulo(parameters.Schema.get_num(STEP, cdef),
parameters.Schema.get_num(OFFSET, cdef),
desc)
else:
return super(HOTParamSchema20170224, cls)._constraint_from_def(
constraint)
[docs]
class HOTParamSchema20180302(HOTParamSchema20170224):
KEYS_20180302 = (TAGS,) = ('tags',)
KEYS = HOTParamSchema20170224.KEYS + KEYS_20180302
PARAMETER_KEYS = KEYS
[docs]
@classmethod
def from_dict(cls, param_name, schema_dict):
"""Return a Parameter Schema object from a legacy schema dictionary.
:param param_name: name of the parameter owning the schema; used
for more verbose logging
:type param_name: str
"""
cls._validate_dict(param_name, schema_dict)
# make update_allowed true by default on TemplateResources
# as the template should deal with this.
return cls(schema_dict[cls.TYPE],
description=schema_dict.get(HOTParamSchema.DESCRIPTION),
default=schema_dict.get(HOTParamSchema.DEFAULT),
constraints=list(cls._constraints(param_name, schema_dict)),
hidden=schema_dict.get(HOTParamSchema.HIDDEN, False),
label=schema_dict.get(HOTParamSchema.LABEL),
immutable=schema_dict.get(HOTParamSchema.IMMUTABLE, False),
tags=schema_dict.get(HOTParamSchema20180302.TAGS))
[docs]
class HOTParameters(parameters.Parameters):
PSEUDO_PARAMETERS = (
PARAM_STACK_ID, PARAM_STACK_NAME, PARAM_REGION, PARAM_PROJECT_ID
) = (
'OS::stack_id', 'OS::stack_name', 'OS::region', 'OS::project_id'
)
[docs]
def set_stack_id(self, stack_identifier):
"""Set the StackId pseudo parameter value."""
if stack_identifier is not None:
self.params[self.PARAM_STACK_ID].schema.set_default(
stack_identifier.stack_id)
return True
return False
def _pseudo_parameters(self, stack_identifier):
stack_id = getattr(stack_identifier, 'stack_id', '')
stack_name = getattr(stack_identifier, 'stack_name', '')
tenant = getattr(stack_identifier, 'tenant', '')
yield parameters.Parameter(
self.PARAM_STACK_ID,
parameters.Schema(parameters.Schema.STRING, _('Stack ID'),
default=str(stack_id)))
yield parameters.Parameter(
self.PARAM_PROJECT_ID,
parameters.Schema(parameters.Schema.STRING, _('Project ID'),
default=str(tenant)))
if stack_name:
yield parameters.Parameter(
self.PARAM_STACK_NAME,
parameters.Schema(parameters.Schema.STRING, _('Stack Name'),
default=stack_name))
