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118 lines
4.0 KiB
Python
118 lines
4.0 KiB
Python
from __future__ import annotations
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import asyncio
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import random
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from ..typing import CreateResult, Messages
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from ..base_provider import BaseRetryProvider
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from .. import debug
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from ..errors import RetryProviderError, RetryNoProviderError
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class RetryProvider(BaseRetryProvider):
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"""
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A provider class to handle retries for creating completions with different providers.
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Attributes:
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providers (list): A list of provider instances.
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shuffle (bool): A flag indicating whether to shuffle providers before use.
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exceptions (dict): A dictionary to store exceptions encountered during retries.
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last_provider (BaseProvider): The last provider that was used.
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"""
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def create_completion(
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self,
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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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Create a completion using available providers, with an option to stream the response.
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Args:
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model (str): The model to be used for completion.
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messages (Messages): The messages to be used for generating completion.
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stream (bool, optional): Flag to indicate if the response should be streamed. Defaults to False.
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Yields:
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CreateResult: Tokens or results from the completion.
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Raises:
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Exception: Any exception encountered during the completion process.
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"""
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providers = [p for p in self.providers if stream and p.supports_stream] if stream else self.providers
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if self.shuffle:
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random.shuffle(providers)
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self.exceptions = {}
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started: bool = False
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for provider in providers:
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self.last_provider = provider
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try:
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if debug.logging:
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print(f"Using {provider.__name__} provider")
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for token in provider.create_completion(model, messages, stream, **kwargs):
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yield token
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started = True
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if started:
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return
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except Exception as e:
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self.exceptions[provider.__name__] = e
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if debug.logging:
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print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
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if started:
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raise e
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self.raise_exceptions()
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async def create_async(
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self,
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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 create a completion using available providers.
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Args:
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model (str): The model to be used for completion.
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messages (Messages): The messages to be used for generating completion.
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Returns:
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str: The result of the asynchronous completion.
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Raises:
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Exception: Any exception encountered during the asynchronous completion process.
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"""
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providers = self.providers
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if self.shuffle:
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random.shuffle(providers)
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self.exceptions = {}
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for provider in providers:
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self.last_provider = provider
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try:
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return await asyncio.wait_for(
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provider.create_async(model, messages, **kwargs),
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timeout=kwargs.get("timeout", 60)
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)
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except Exception as e:
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self.exceptions[provider.__name__] = e
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if debug.logging:
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print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
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self.raise_exceptions()
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def raise_exceptions(self) -> None:
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"""
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Raise a combined exception if any occurred during retries.
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Raises:
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RetryProviderError: If any provider encountered an exception.
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RetryNoProviderError: If no provider is found.
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"""
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if self.exceptions:
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raise RetryProviderError("RetryProvider failed:\n" + "\n".join([
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f"{p}: {exception.__class__.__name__}: {exception}" for p, exception in self.exceptions.items()
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]))
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raise RetryNoProviderError("No provider found") |