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from __future__ import absolute_import
import six
from uuid import UUID as _UUID
from graphql.language import ast
from .scalars import Scalar
class UUID(Scalar):
"""
Leverages the internal Python implmeentation of UUID (uuid.UUID) to provide native UUID objects
in fields, resolvers and input.
"""
@staticmethod
def serialize(uuid):
if isinstance(uuid, six.string_types):
uuid = _UUID(uuid)
assert isinstance(uuid, _UUID), "Expected UUID instance, received {}".format(
uuid
)
return str(uuid)
@staticmethod
def parse_literal(node):
if isinstance(node, ast.StringValue):
return _UUID(node.value)
@staticmethod
def parse_value(value):
return _UUID(value)
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