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84 lines
3.3 KiB
Python
84 lines
3.3 KiB
Python
from __future__ import annotations
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from .base_provider import AsyncGeneratorProvider, ProviderModelMixin
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from .helper import format_prompt, filter_none
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from ..typing import AsyncResult, Messages
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from ..requests import raise_for_status
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from ..requests.aiohttp import StreamSession
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from ..errors import ResponseError, MissingAuthError
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class Replicate(AsyncGeneratorProvider, ProviderModelMixin):
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url = "https://replicate.com"
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working = True
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default_model = "meta/meta-llama-3-70b-instruct"
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@classmethod
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async def create_async_generator(
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cls,
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model: str,
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messages: Messages,
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api_key: str = None,
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proxy: str = None,
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timeout: int = 180,
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system_prompt: str = None,
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max_new_tokens: int = None,
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temperature: float = None,
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top_p: float = None,
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top_k: float = None,
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stop: list = None,
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extra_data: dict = {},
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headers: dict = {
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"accept": "application/json",
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},
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**kwargs
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) -> AsyncResult:
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model = cls.get_model(model)
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if cls.needs_auth and api_key is None:
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raise MissingAuthError("api_key is missing")
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if api_key is not None:
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headers["Authorization"] = f"Bearer {api_key}"
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api_base = "https://api.replicate.com/v1/models/"
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else:
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api_base = "https://replicate.com/api/models/"
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async with StreamSession(
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proxy=proxy,
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headers=headers,
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timeout=timeout
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) as session:
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data = {
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"stream": True,
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"input": {
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"prompt": format_prompt(messages),
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**filter_none(
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system_prompt=system_prompt,
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max_new_tokens=max_new_tokens,
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temperature=temperature,
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top_p=top_p,
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top_k=top_k,
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stop_sequences=",".join(stop) if stop else None
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),
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**extra_data
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},
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}
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url = f"{api_base.rstrip('/')}/{model}/predictions"
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async with session.post(url, json=data) as response:
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message = "Model not found" if response.status == 404 else None
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await raise_for_status(response, message)
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result = await response.json()
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if "id" not in result:
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raise ResponseError(f"Invalid response: {result}")
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async with session.get(result["urls"]["stream"], headers={"Accept": "text/event-stream"}) as response:
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await raise_for_status(response)
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event = None
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async for line in response.iter_lines():
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if line.startswith(b"event: "):
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event = line[7:]
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if event == b"done":
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break
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elif event == b"output":
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if line.startswith(b"data: "):
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new_text = line[6:].decode()
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if new_text:
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yield new_text
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else:
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yield "\n" |