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Co-authored-by: SunLei <sunlei5788@gmail.com>
118 lines
4.0 KiB
Python
118 lines
4.0 KiB
Python
"""
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# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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from collections.abc import AsyncGenerator
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from typing_extensions import override
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from fastdeploy.engine.pooling_params import PoolingParams
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from fastdeploy.engine.request import PoolingRequestOutput, RewardRequestOutput
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from fastdeploy.entrypoints.openai.protocol import (
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ChatRewardData,
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ChatRewardRequest,
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ChatRewardResponse,
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UsageInfo,
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)
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from fastdeploy.entrypoints.openai.serving_engine import ServeContext, ZmqOpenAIServing
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from fastdeploy.utils import api_server_logger
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class OpenAIServingReward(ZmqOpenAIServing):
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request_id_prefix = "reward"
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"""
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OpenAI-style reward serving using pipeline pattern
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"""
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def __init__(self, engine_client, models, cfg, pid, ips, max_waiting_time, chat_template):
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super().__init__(engine_client, models, cfg, pid, ips, max_waiting_time, chat_template)
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@override
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def _request_to_dict(self, ctx: ServeContext):
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request: ChatRewardRequest = ctx.request
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request_dict = super()._request_to_dict(ctx)
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if hasattr(request, "to_pooling_params"):
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pooling_params: PoolingParams = request.to_pooling_params()
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pooling_params.verify("reward", self.cfg.model_config)
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request_dict["pooling_params"] = pooling_params.to_dict()
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return request_dict
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@override
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def _request_to_batch_dicts(self, ctx: ServeContext):
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"""
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Convert the request into dictionary format that can be sent to the inference server
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"""
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request_dict = self._request_to_dict(ctx)
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request_dict["request_id"] = f"{ctx.request_id}_0"
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request_dicts = [request_dict]
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return request_dicts
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async def create_reward(self, request: ChatRewardRequest):
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"""
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Create embeddings for the input texts using the pipeline pattern
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"""
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request_id = self._generate_request_id(getattr(request, "user", None))
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ctx = ServeContext[ChatRewardRequest](
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request=request,
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model_name=request.model,
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request_id=request_id,
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)
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idx = 0
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response: ChatRewardResponse = None
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generators: AsyncGenerator[ChatRewardResponse, None] = self.handle(ctx)
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async for r in generators:
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r.data[0].index = idx
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idx += 1
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if response is None:
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response = r
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else:
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response.data.append(r.data[0])
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response.usage.prompt_tokens += r.usage.prompt_tokens
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response.usage.total_tokens += r.usage.total_tokens
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return response
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@override
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def _build_response(self, ctx: ServeContext):
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"""Generate final reward response"""
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api_server_logger.info(f"[{ctx.request_id}] Reward RequestOutput received:{ctx.request_output}")
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base = PoolingRequestOutput.from_dict(ctx.request_output)
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reward_res = RewardRequestOutput.from_base(base)
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data = ChatRewardData(
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index=0,
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score=reward_res.outputs.score,
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)
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num_prompt_tokens = 0
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if reward_res.prompt_token_ids:
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num_prompt_tokens = len(reward_res.prompt_token_ids)
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usage = UsageInfo(
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prompt_tokens=num_prompt_tokens,
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total_tokens=num_prompt_tokens,
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)
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return ChatRewardResponse(
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id=ctx.request_id,
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created=ctx.created_time,
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model=ctx.model_name,
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data=[data],
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usage=usage,
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)
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