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4ff79c6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | # SPDX-FileCopyrightText: 2022-present deepset GmbH <info@deepset.ai>
#
# SPDX-License-Identifier: Apache-2.0
import inspect
import sys
from typing import Callable, Optional
from haystack import DeserializationError
def serialize_callable(callable_handle: Callable) -> str:
"""
Serializes a callable to its full path.
:param callable_handle: The callable to serialize
:return: The full path of the callable
"""
module = inspect.getmodule(callable_handle)
# Get the full package path of the function
if module is not None:
full_path = f"{module.__name__}.{callable_handle.__name__}"
else:
full_path = callable_handle.__name__
return full_path
def deserialize_callable(callable_handle: str) -> Optional[Callable]:
"""
Deserializes a callable given its full import path as a string.
:param callable_handle: The full path of the callable_handle
:return: The callable
:raises DeserializationError: If the callable cannot be found
"""
parts = callable_handle.split(".")
module_name = ".".join(parts[:-1])
function_name = parts[-1]
module = sys.modules.get(module_name, None)
if not module:
raise DeserializationError(f"Could not locate the module of the callable: {module_name}")
deserialized_callable = getattr(module, function_name, None)
if not deserialized_callable:
raise DeserializationError(f"Could not locate the callable: {function_name}")
return deserialized_callable
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