The heat.engine.properties ModuleΒΆ

class heat.engine.properties.Properties(schema, data, resolver=<function <lambda> at 0x2ba72fb4fc08>, parent_name=None, context=None)[source]

Bases: _abcoll.Mapping

static schema_from_params(params_snippet)[source]

Convert a template snippet that defines parameters into a properties schema

Parameters:params_snippet – parameter definition from a template
Returns:an equivalent properties schema for the specified params
classmethod schema_to_parameters_and_properties(schema)[source]

Generates properties with params resolved for a resource’s properties_schema.

Parameters:schema – A resource type’s properties_schema
Returns:A tuple of params and properties dicts
ex: input: {‘foo’: {‘Type’: ‘String’}}
output: {‘foo’: {‘Type’: ‘String’}},
{‘foo’: {‘Ref’: ‘foo’}}
ex: input: {‘foo’: {‘Type’: ‘List’}, ‘bar’: {‘Type’: ‘Map’}}
output: {‘foo’: {‘Type’: ‘CommaDelimitedList’}
‘bar’: {‘Type’: ‘Json’}},
{‘foo’: {‘Fn::Split’: {‘Ref’: ‘foo’}},
‘bar’: {‘Ref’: ‘bar’}}
validate(with_value=True)[source]
class heat.engine.properties.Property(schema, name=None, context=None)[source]

Bases: object

default()[source]
has_default()[source]
implemented()[source]
required()[source]
support_status()[source]
type()[source]
update_allowed()[source]
validate_data(value)[source]
class heat.engine.properties.Schema(data_type, description=None, default=None, schema=None, required=False, constraints=, []implemented=True, update_allowed=False, support_status=<heat.engine.support.SupportStatus object at 0x2ba72f695a90>)[source]

Bases: heat.engine.constraints.Schema

Schema class for validating resource properties.

This class is used for defining schema constraints for resource properties. It inherits generic validation features from the base Schema class and add processing that is specific to resource properties.

CONSTRAINTS = 'constraints'
DEFAULT = 'default'
DESCRIPTION = 'description'
KEYS = ('type', 'description', 'default', 'schema', 'required', 'constraints', 'update_allowed')
REQUIRED = 'required'
SCHEMA = 'schema'
TYPE = 'type'
UPDATE_ALLOWED = 'update_allowed'
classmethod from_legacy(schema_dict)[source]

Return a Property Schema object from a legacy schema dictionary.

classmethod from_parameter(param)[source]

Return a Property Schema corresponding to a Parameter Schema.

Convert a parameter schema from a provider template to a property Schema for the corresponding resource facade.

heat.engine.properties.schemata(schema_dicts)[source]

Return dictionary of Schema objects for given dictionary of schemata.

The input schemata are converted from the legacy (dictionary-based) format to Schema objects where necessary.

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