swarms/utils/try_except_wrapper.py

from functools import wraps
from time import time
from typing import Any, Callable

from swarms.utils.loguru_logger import initialize_logger

logger = initialize_logger("try_except_wrapper")


def retry(
    max_retries: int = 3,
) -> Callable[[Callable[..., Any]], Callable[..., Any]]:
    """
    A decorator that retries a function a specified number of times if an exception occurs.

    Args:
        max_retries (int): The maximum number of retries. Default is 3.

    Returns:
        Callable[[Callable[..., Any]], Callable[..., Any]]: The decorator function.
    """

    def decorator_retry(
        func: Callable[..., Any]
    ) -> Callable[..., Any]:
        @wraps(func)
        def wrapper_retry(*args, **kwargs) -> Any:
            """
            The wrapper function that retries the decorated function.

            Args:
                *args: Variable length argument list.
                **kwargs: Arbitrary keyword arguments.

            Returns:
                Any: The result of the decorated function.
            """
            for _ in range(max_retries):
                try:
                    return func(*args, **kwargs)
                except Exception as e:
                    logger.error(f"Error: {e}, retrying...")
            return func(*args, **kwargs)

        return wrapper_retry

    return decorator_retry


def log_execution_time(
    func: Callable[..., Any]
) -> Callable[..., Any]:
    """
    A decorator that logs the execution time of a function.

    Args:
        func (Callable[..., Any]): The function to be decorated.

    Returns:
        Callable[..., Any]: The decorated function.
    """

    @wraps(func)
    def wrapper(*args, **kwargs) -> Any:
        """
        The wrapper function that logs the execution time and calls the decorated function.

        Args:
            *args: Variable length argument list.
            **kwargs: Arbitrary keyword arguments.

        Returns:
            Any: The result of the decorated function.
        """
        start = time()
        result = func(*args, **kwargs)
        end = time()
        logger.info(
            f"Execution time for {func.__name__}: {end - start} seconds"
        )
        return result

    return wrapper


def try_except_wrapper(verbose: bool = False):
    """
    A decorator that wraps a function with a try-except block.
    It catches any exception that occurs during the execution of the function,
    prints an error message, and returns None.
    It also prints a message indicating the exit of the function.

    Args:
        func (function): The function to be wrapped.

    Returns:
        function: The wrapped function.

    Examples:
    >>> @try_except_wrapper(verbose=True)
    ... def divide(a, b):
    ...     return a / b
    >>> divide(1, 0)
    An error occurred in function divide: division by zero
    Exiting function: divide
    """

    def decorator(func: Callable[..., Any]):
        @wraps(func)
        @retry()
        @log_execution_time
        def wrapper(*args, **kwargs):
            try:
                result = func(*args, **kwargs)
                return result
            except Exception as error:
                if verbose:
                    logger.error(
                        f"An error occurred in function {func.__name__}:"
                        f" {error}"
                    )
                else:
                    logger.error(
                        f"An error occurred in function {func.__name__}:"
                        f" {error}"
                    )
                    return None
            finally:
                print(f"Exiting function: {func.__name__}")

        return wrapper

    return decorator


# @try_except_wrapper(verbose=True)
# def divide(a, b):
#     """Multiply two numbers."""
#     return a / b


# # This will work fine
# result = divide(2, 0)
# print(result)  # Output: 6