def resource_schema(self, cnxt, type_name):
"""
Return the schema of the specified type.
arg1 -> RPC context.
arg2 -> Name of the resource type to obtain the schema of.
"""
try:
resource_class = resource.get_class(type_name)
except exception.StackValidationFailed:
raise exception.ResourceTypeNotFound(type_name=type_name)
def properties_schema():
for name, schema_dict in resource_class.properties_schema.items():
schema = properties.Schema.from_legacy(schema_dict)
if schema.implemented:
yield name, dict(schema)
def attributes_schema():
for schema_item in resource_class.attributes_schema.items():
schema = attributes.Attribute(*schema_item)
yield schema.name, {schema.DESCRIPTION: schema.description}
return {
rpc_api.RES_SCHEMA_RES_TYPE: type_name,
rpc_api.RES_SCHEMA_PROPERTIES: dict(properties_schema()),
rpc_api.RES_SCHEMA_ATTRIBUTES: dict(attributes_schema()),
}
def generate_template(self, cnxt, type_name):
"""
Generate a template based on the specified type.
arg1 -> RPC context.
arg2 -> Name of the resource type to generate a template for.
"""
try:
return \
resource.get_class(type_name).resource_to_template(type_name)
except exception.StackValidationFailed:
raise exception.ResourceTypeNotFound(type_name=type_name)
def get_class(self, resource_type, resource_name=None):
if resource_type == "":
msg = _('Resource "%s" has no type') % resource_name
raise exception.InvalidResourceType(message=msg)
elif resource_type is None:
msg = _('Non-empty resource type is required '
'for resource "%s"') % resource_name
raise exception.InvalidResourceType(message=msg)
elif not isinstance(resource_type, six.string_types):
msg = _('Resource "%s" type is not a string') % resource_name
raise exception.InvalidResourceType(message=msg)
info = self.get_resource_info(resource_type,
resource_name=resource_name)
if info is None:
raise exception.ResourceTypeNotFound(type_name=resource_type)
return info.get_class()
