mirror of
https://github.com/xtekky/gpt4free.git
synced 2024-11-05 00:01:00 +00:00
273 lines
8.7 KiB
Python
273 lines
8.7 KiB
Python
from __future__ import annotations
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import sys
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import asyncio
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from asyncio import AbstractEventLoop
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from concurrent.futures import ThreadPoolExecutor
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from abc import abstractmethod
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from inspect import signature, Parameter
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from .helper import get_cookies, format_prompt
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from ..typing import CreateResult, AsyncResult, Messages, Union
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from ..base_provider import BaseProvider
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from ..errors import NestAsyncioError, ModelNotSupportedError
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if sys.version_info < (3, 10):
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NoneType = type(None)
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else:
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from types import NoneType
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# Set Windows event loop policy for better compatibility with asyncio and curl_cffi
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if sys.platform == 'win32':
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if isinstance(asyncio.get_event_loop_policy(), asyncio.WindowsProactorEventLoopPolicy):
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asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
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def get_running_loop() -> Union[AbstractEventLoop, None]:
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try:
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loop = asyncio.get_running_loop()
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if not hasattr(loop.__class__, "_nest_patched"):
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raise NestAsyncioError(
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'Use "create_async" instead of "create" function in a running event loop. Or use "nest_asyncio" package.'
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)
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return loop
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except RuntimeError:
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pass
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class AbstractProvider(BaseProvider):
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"""
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Abstract class for providing asynchronous functionality to derived classes.
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"""
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@classmethod
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async def create_async(
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cls,
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model: str,
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messages: Messages,
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*,
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loop: AbstractEventLoop = None,
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executor: ThreadPoolExecutor = None,
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**kwargs
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) -> str:
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"""
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Asynchronously creates a result based on the given model and messages.
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Args:
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cls (type): The class on which this method is called.
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model (str): The model to use for creation.
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messages (Messages): The messages to process.
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loop (AbstractEventLoop, optional): The event loop to use. Defaults to None.
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executor (ThreadPoolExecutor, optional): The executor for running async tasks. Defaults to None.
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**kwargs: Additional keyword arguments.
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Returns:
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str: The created result as a string.
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"""
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loop = loop or asyncio.get_running_loop()
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def create_func() -> str:
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return "".join(cls.create_completion(model, messages, False, **kwargs))
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return await asyncio.wait_for(
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loop.run_in_executor(executor, create_func),
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timeout=kwargs.get("timeout")
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)
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@classmethod
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@property
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def params(cls) -> str:
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"""
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Returns the parameters supported by the provider.
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Args:
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cls (type): The class on which this property is called.
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Returns:
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str: A string listing the supported parameters.
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"""
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sig = signature(
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cls.create_async_generator if issubclass(cls, AsyncGeneratorProvider) else
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cls.create_async if issubclass(cls, AsyncProvider) else
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cls.create_completion
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)
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def get_type_name(annotation: type) -> str:
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return annotation.__name__ if hasattr(annotation, "__name__") else str(annotation)
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args = ""
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for name, param in sig.parameters.items():
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if name in ("self", "kwargs") or (name == "stream" and not cls.supports_stream):
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continue
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args += f"\n {name}"
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args += f": {get_type_name(param.annotation)}" if param.annotation is not Parameter.empty else ""
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args += f' = "{param.default}"' if param.default == "" else f" = {param.default}" if param.default is not Parameter.empty else ""
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return f"g4f.Provider.{cls.__name__} supports: ({args}\n)"
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class AsyncProvider(AbstractProvider):
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"""
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Provides asynchronous functionality for creating completions.
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"""
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@classmethod
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def create_completion(
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cls,
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model: str,
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messages: Messages,
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stream: bool = False,
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**kwargs
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) -> CreateResult:
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"""
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Creates a completion result synchronously.
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Args:
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cls (type): The class on which this method is called.
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model (str): The model to use for creation.
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messages (Messages): The messages to process.
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stream (bool): Indicates whether to stream the results. Defaults to False.
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loop (AbstractEventLoop, optional): The event loop to use. Defaults to None.
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**kwargs: Additional keyword arguments.
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Returns:
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CreateResult: The result of the completion creation.
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"""
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get_running_loop()
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yield asyncio.run(cls.create_async(model, messages, **kwargs))
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@staticmethod
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@abstractmethod
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async def create_async(
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model: str,
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messages: Messages,
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**kwargs
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) -> str:
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"""
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Abstract method for creating asynchronous results.
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Args:
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model (str): The model to use for creation.
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messages (Messages): The messages to process.
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**kwargs: Additional keyword arguments.
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Raises:
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NotImplementedError: If this method is not overridden in derived classes.
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Returns:
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str: The created result as a string.
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"""
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raise NotImplementedError()
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class AsyncGeneratorProvider(AsyncProvider):
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"""
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Provides asynchronous generator functionality for streaming results.
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"""
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supports_stream = True
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@classmethod
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def create_completion(
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cls,
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model: str,
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messages: Messages,
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stream: bool = True,
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**kwargs
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) -> CreateResult:
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"""
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Creates a streaming completion result synchronously.
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Args:
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cls (type): The class on which this method is called.
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model (str): The model to use for creation.
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messages (Messages): The messages to process.
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stream (bool): Indicates whether to stream the results. Defaults to True.
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loop (AbstractEventLoop, optional): The event loop to use. Defaults to None.
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**kwargs: Additional keyword arguments.
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Returns:
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CreateResult: The result of the streaming completion creation.
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"""
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loop = get_running_loop()
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new_loop = False
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if not loop:
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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new_loop = True
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generator = cls.create_async_generator(model, messages, stream=stream, **kwargs)
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gen = generator.__aiter__()
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while True:
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try:
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yield loop.run_until_complete(gen.__anext__())
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except StopAsyncIteration:
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break
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if new_loop:
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loop.close()
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asyncio.set_event_loop(None)
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@classmethod
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async def create_async(
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cls,
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model: str,
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messages: Messages,
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**kwargs
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) -> str:
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"""
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Asynchronously creates a result from a generator.
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Args:
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cls (type): The class on which this method is called.
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model (str): The model to use for creation.
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messages (Messages): The messages to process.
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**kwargs: Additional keyword arguments.
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Returns:
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str: The created result as a string.
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"""
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return "".join([
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chunk async for chunk in cls.create_async_generator(model, messages, stream=False, **kwargs)
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if not isinstance(chunk, Exception)
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])
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@staticmethod
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@abstractmethod
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async def create_async_generator(
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model: str,
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messages: Messages,
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stream: bool = True,
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**kwargs
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) -> AsyncResult:
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"""
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Abstract method for creating an asynchronous generator.
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Args:
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model (str): The model to use for creation.
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messages (Messages): The messages to process.
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stream (bool): Indicates whether to stream the results. Defaults to True.
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**kwargs: Additional keyword arguments.
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Raises:
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NotImplementedError: If this method is not overridden in derived classes.
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Returns:
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AsyncResult: An asynchronous generator yielding results.
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"""
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raise NotImplementedError()
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class ProviderModelMixin:
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default_model: str
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models: list[str] = []
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model_aliases: dict[str, str] = {}
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@classmethod
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def get_models(cls) -> list[str]:
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return cls.models
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@classmethod
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def get_model(cls, model: str) -> str:
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if not model:
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return cls.default_model
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elif model in cls.model_aliases:
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return cls.model_aliases[model]
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elif model not in cls.get_models():
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raise ModelNotSupportedError(f"Model is not supported: {model} in: {cls.__name__}")
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return model |