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from __future__ import annotations
import asyncio
import random
from ..typing import Type, List, CreateResult, Messages, Iterator, AsyncResult
from .types import BaseProvider, BaseRetryProvider, ProviderType
from .. import debug
from ..errors import RetryProviderError, RetryNoProviderError
class IterListProvider(BaseRetryProvider):
def __init__(
self,
providers: List[Type[BaseProvider]],
shuffle: bool = True
) -> None:
"""
Initialize the BaseRetryProvider.
Args:
providers (List[Type[BaseProvider]]): List of providers to use.
shuffle (bool): Whether to shuffle the providers list.
single_provider_retry (bool): Whether to retry a single provider if it fails.
max_retries (int): Maximum number of retries for a single provider.
"""
self.providers = providers
self.shuffle = shuffle
self.working = True
self.last_provider: Type[BaseProvider] = None
def create_completion(
self,
model: str,
messages: Messages,
stream: bool = False,
**kwargs,
) -> CreateResult:
"""
Create a completion using available providers, with an option to stream the response.
Args:
model (str): The model to be used for completion.
messages (Messages): The messages to be used for generating completion.
stream (bool, optional): Flag to indicate if the response should be streamed. Defaults to False.
Yields:
CreateResult: Tokens or results from the completion.
Raises:
Exception: Any exception encountered during the completion process.
"""
exceptions = {}
started: bool = False
for provider in self.get_providers(stream):
self.last_provider = provider
try:
if debug.logging:
print(f"Using {provider.__name__} provider")
for token in provider.create_completion(model, messages, stream, **kwargs):
yield token
started = True
if started:
return
except Exception as e:
exceptions[provider.__name__] = e
if debug.logging:
print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
if started:
raise e
raise_exceptions(exceptions)
async def create_async(
self,
model: str,
messages: Messages,
**kwargs,
) -> str:
"""
Asynchronously create a completion using available providers.
Args:
model (str): The model to be used for completion.
messages (Messages): The messages to be used for generating completion.
Returns:
str: The result of the asynchronous completion.
Raises:
Exception: Any exception encountered during the asynchronous completion process.
"""
exceptions = {}
for provider in self.get_providers(False):
self.last_provider = provider
try:
if debug.logging:
print(f"Using {provider.__name__} provider")
return await asyncio.wait_for(
provider.create_async(model, messages, **kwargs),
timeout=kwargs.get("timeout", 60),
)
except Exception as e:
exceptions[provider.__name__] = e
if debug.logging:
print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
raise_exceptions(exceptions)
def get_providers(self, stream: bool) -> list[ProviderType]:
providers = [p for p in self.providers if p.supports_stream] if stream else self.providers
if self.shuffle:
random.shuffle(providers)
return providers
async def create_async_generator(
self,
model: str,
messages: Messages,
stream: bool = True,
**kwargs
) -> AsyncResult:
exceptions = {}
started: bool = False
for provider in self.get_providers(stream):
self.last_provider = provider
try:
if debug.logging:
print(f"Using {provider.__name__} provider")
if not stream:
yield await provider.create_async(model, messages, **kwargs)
elif hasattr(provider, "create_async_generator"):
async for token in provider.create_async_generator(model, messages, stream=stream, **kwargs):
yield token
else:
for token in provider.create_completion(model, messages, stream, **kwargs):
yield token
started = True
if started:
return
except Exception as e:
exceptions[provider.__name__] = e
if debug.logging:
print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
if started:
raise e
raise_exceptions(exceptions)
class RetryProvider(IterListProvider):
def __init__(
self,
providers: List[Type[BaseProvider]],
shuffle: bool = True,
single_provider_retry: bool = False,
max_retries: int = 3,
) -> None:
"""
Initialize the BaseRetryProvider.
Args:
providers (List[Type[BaseProvider]]): List of providers to use.
shuffle (bool): Whether to shuffle the providers list.
single_provider_retry (bool): Whether to retry a single provider if it fails.
max_retries (int): Maximum number of retries for a single provider.
"""
super().__init__(providers, shuffle)
self.single_provider_retry = single_provider_retry
self.max_retries = max_retries
def create_completion(
self,
model: str,
messages: Messages,
stream: bool = False,
**kwargs,
) -> CreateResult:
"""
Create a completion using available providers, with an option to stream the response.
Args:
model (str): The model to be used for completion.
messages (Messages): The messages to be used for generating completion.
stream (bool, optional): Flag to indicate if the response should be streamed. Defaults to False.
Yields:
CreateResult: Tokens or results from the completion.
Raises:
Exception: Any exception encountered during the completion process.
"""
if self.single_provider_retry:
exceptions = {}
started: bool = False
provider = self.providers[0]
self.last_provider = provider
for attempt in range(self.max_retries):
try:
if debug.logging:
print(f"Using {provider.__name__} provider (attempt {attempt + 1})")
for token in provider.create_completion(model, messages, stream, **kwargs):
yield token
started = True
if started:
return
except Exception as e:
exceptions[provider.__name__] = e
if debug.logging:
print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
if started:
raise e
raise_exceptions(exceptions)
else:
yield from super().create_completion(model, messages, stream, **kwargs)
async def create_async(
self,
model: str,
messages: Messages,
**kwargs,
) -> str:
"""
Asynchronously create a completion using available providers.
Args:
model (str): The model to be used for completion.
messages (Messages): The messages to be used for generating completion.
Returns:
str: The result of the asynchronous completion.
Raises:
Exception: Any exception encountered during the asynchronous completion process.
"""
exceptions = {}
if self.single_provider_retry:
provider = self.providers[0]
self.last_provider = provider
for attempt in range(self.max_retries):
try:
if debug.logging:
print(f"Using {provider.__name__} provider (attempt {attempt + 1})")
return await asyncio.wait_for(
provider.create_async(model, messages, **kwargs),
timeout=kwargs.get("timeout", 60),
)
except Exception as e:
exceptions[provider.__name__] = e
if debug.logging:
print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
raise_exceptions(exceptions)
else:
return await super().create_async(model, messages, **kwargs)
class IterProvider(BaseRetryProvider):
__name__ = "IterProvider"
def __init__(
self,
providers: List[BaseProvider],
) -> None:
providers.reverse()
self.providers: List[BaseProvider] = providers
self.working: bool = True
self.last_provider: BaseProvider = None
def create_completion(
self,
model: str,
messages: Messages,
stream: bool = False,
**kwargs
) -> CreateResult:
exceptions: dict = {}
started: bool = False
for provider in self.iter_providers():
if stream and not provider.supports_stream:
continue
try:
for token in provider.create_completion(model, messages, stream, **kwargs):
yield token
started = True
if started:
return
except Exception as e:
exceptions[provider.__name__] = e
if debug.logging:
print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
if started:
raise e
raise_exceptions(exceptions)
async def create_async(
self,
model: str,
messages: Messages,
**kwargs
) -> str:
exceptions: dict = {}
for provider in self.iter_providers():
try:
return await asyncio.wait_for(
provider.create_async(model, messages, **kwargs),
timeout=kwargs.get("timeout", 60)
)
except Exception as e:
exceptions[provider.__name__] = e
if debug.logging:
print(f"{provider.__name__}: {e.__class__.__name__}: {e}")
raise_exceptions(exceptions)
def iter_providers(self) -> Iterator[BaseProvider]:
used_provider = []
try:
while self.providers:
provider = self.providers.pop()
used_provider.append(provider)
self.last_provider = provider
if debug.logging:
print(f"Using {provider.__name__} provider")
yield provider
finally:
used_provider.reverse()
self.providers = [*used_provider, *self.providers]
def raise_exceptions(exceptions: dict) -> None:
"""
Raise a combined exception if any occurred during retries.
Raises:
RetryProviderError: If any provider encountered an exception.
RetryNoProviderError: If no provider is found.
"""
if exceptions:
raise RetryProviderError("RetryProvider failed:\n" + "\n".join([
f"{p}: {exception.__class__.__name__}: {exception}" for p, exception in exceptions.items()
]))
raise RetryNoProviderError("No provider found")
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