forked-synapse/synapse/_pydantic_compat.py

#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2023 Maxwell G <maxwell@gtmx.me>
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#

from typing import TYPE_CHECKING

from packaging.version import Version

try:
    from pydantic import __version__ as pydantic_version
except ImportError:
    import importlib.metadata

    pydantic_version = importlib.metadata.version("pydantic")

HAS_PYDANTIC_V2: bool = Version(pydantic_version).major == 2

if TYPE_CHECKING or HAS_PYDANTIC_V2:
    from pydantic.v1 import (
        BaseModel,
        Extra,
        Field,
        MissingError,
        PydanticValueError,
        StrictBool,
        StrictInt,
        StrictStr,
        ValidationError,
        conbytes,
        confloat,
        conint,
        constr,
        parse_obj_as,
        validator,
    )
    from pydantic.v1.error_wrappers import ErrorWrapper
    from pydantic.v1.typing import get_args
else:
    from pydantic import (
        BaseModel,
        Extra,
        Field,
        MissingError,
        PydanticValueError,
        StrictBool,
        StrictInt,
        StrictStr,
        ValidationError,
        conbytes,
        confloat,
        conint,
        constr,
        parse_obj_as,
        validator,
    )
    from pydantic.error_wrappers import ErrorWrapper
    from pydantic.typing import get_args

__all__ = (
    "HAS_PYDANTIC_V2",
    "BaseModel",
    "constr",
    "conbytes",
    "conint",
    "confloat",
    "ErrorWrapper",
    "Extra",
    "Field",
    "get_args",
    "MissingError",
    "parse_obj_as",
    "PydanticValueError",
    "StrictBool",
    "StrictInt",
    "StrictStr",
    "ValidationError",
    "validator",
)