| diff --git a/task_module.py b/task_module.py | |
| new file mode 100644 | |
| index 0000000..0000001 | |
| --- /dev/null | |
| +++ b/task_module.py | |
| +from graphene import Scalar | |
| +from graphql.error import GraphQLError | |
| +from graphql.language import StringValueNode | |
| + | |
| +class HexScalar(Scalar): | |
| + """ | |
| + The `Hex` scalar type represents a hexadecimal-encoded String. | |
| + """ | |
| + | |
| + @staticmethod | |
| + def serialize(value): | |
| + if isinstance(value, bytes): | |
| + return value.hex() | |
| + else: | |
| + value = str(value).encode("utf-8") | |
| + return value.hex() | |
| + | |
| + @classmethod | |
| + def parse(cls, value): | |
| + try: | |
| + return bytes.fromhex(value) | |
| + except ValueError as e: | |
| + raise GraphQLError(f"Invalid hex string: {value}") | |
| + | |
| + @classmethod | |
| + def parse_literal(cls, node, _variables=None): | |
| + if not isinstance(node, StringValueNode): | |
| + raise GraphQLError( | |
| + f"Hex cannot represent non-string value" | |
| + ) | |
| + return cls.parse(node.value) | |
| \ No newline at end of file | |