61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
import pathlib
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from fastapi import APIRouter, HTTPException, Response, status
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from pydantic import BaseModel
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from langchain.llms import RWKV
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from utils.rwkv import *
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from utils.torch import *
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import global_var
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router = APIRouter()
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class SwitchModelBody(BaseModel):
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model: str
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strategy: str
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@router.post("/switch-model")
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def switch_model(body: SwitchModelBody, response: Response):
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if global_var.get(global_var.Model_Status) is global_var.ModelStatus.Loading:
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response.status_code = status.HTTP_304_NOT_MODIFIED
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return
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global_var.set(global_var.Model_Status, global_var.ModelStatus.Offline)
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global_var.set(global_var.Model, None)
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torch_gc()
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global_var.set(global_var.Model_Status, global_var.ModelStatus.Loading)
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try:
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global_var.set(
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global_var.Model,
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RWKV(
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model=body.model,
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strategy=body.strategy,
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tokens_path=f"{pathlib.Path(__file__).parent.parent.resolve()}/20B_tokenizer.json",
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),
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)
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except Exception:
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global_var.set(global_var.Model_Status, global_var.ModelStatus.Offline)
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raise HTTPException(status.HTTP_500_INTERNAL_SERVER_ERROR, "failed to load")
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if global_var.get(global_var.Model_Config) is None:
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global_var.set(
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global_var.Model_Config, get_rwkv_config(global_var.get(global_var.Model))
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)
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global_var.set(global_var.Model_Status, global_var.ModelStatus.Working)
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return "success"
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@router.post("/update-config")
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def update_config(body: ModelConfigBody):
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"""
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Will not update the model config immediately, but set it when completion called to avoid modifications during generation
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"""
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print(body)
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global_var.set(global_var.Model_Config, body)
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return "success"
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