e241005a71
Signed-off-by: lishunyang12 <125541396+lishunyang12@users.noreply.github.com> Signed-off-by: Yueqian Lin <linyueqian@outlook.com> Signed-off-by: lishunyang <lishunyang12@163.com> Co-authored-by: Hongsheng Liu <liuhongsheng4@huawei.com> Co-authored-by: Yueqian Lin <linyueqian@outlook.com>
61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
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from __future__ import annotations
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from typing import Any, Protocol
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from openai import AsyncOpenAI
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class ModelBackend(Protocol):
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async def generate(
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self,
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messages: list[dict[str, Any]],
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*,
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max_tokens: int,
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temperature: float,
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top_p: float,
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extra_body: dict[str, Any] | None = None,
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) -> tuple[str, dict[str, Any] | None]: ...
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async def aclose(self) -> None: ...
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class OpenAIBackend:
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def __init__(
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self,
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base_url: str,
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model: str,
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api_key: str = "EMPTY",
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timeout: float = 300.0,
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) -> None:
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self.model = model
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self._client = AsyncOpenAI(base_url=base_url, api_key=api_key, timeout=timeout)
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async def generate(
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self,
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messages: list[dict[str, Any]],
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*,
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max_tokens: int,
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temperature: float,
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top_p: float,
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extra_body: dict[str, Any] | None = None,
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) -> tuple[str, dict[str, Any] | None]:
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response = await self._client.chat.completions.create(
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model=self.model,
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messages=messages,
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max_tokens=max_tokens,
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temperature=temperature,
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top_p=top_p,
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extra_body=extra_body or {},
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)
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if not response.choices:
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return "", None
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text = response.choices[0].message.content or ""
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usage = response.usage.model_dump() if getattr(response, "usage", None) else None
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return text, usage
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async def aclose(self) -> None:
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await self._client.close()
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