Spaces:
Sleeping
Sleeping
File size: 1,753 Bytes
881b63b 66ffe4f 881b63b 66ffe4f 881b63b 66ffe4f 881b63b 66ffe4f 881b63b 66ffe4f 881b63b |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 |
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline
from peft import PeftModel, PeftConfig
from fastapi.middleware.cors import CORSMiddleware
import torch
from dotenv import load_dotenv
import os
load_dotenv()
hf_token = os.getenv("HF_TOKEN")
app = FastAPI()
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
adapter_path = "./checkpoint-711"
try:
peft_config = PeftConfig.from_pretrained(adapter_path)
base_model = AutoModelForCausalLM.from_pretrained(
peft_config.base_model_name_or_path,
torch_dtype=torch.float32,
device_map={"": "cpu"}
)
tokenizer = AutoTokenizer.from_pretrained(peft_config.base_model_name_or_path)
model = PeftModel.from_pretrained(base_model, adapter_path, device_map={"": "cpu"})
pipe = pipeline("text-generation", model=model, tokenizer=tokenizer)
except Exception as e:
raise RuntimeError(f"❌ Failed to load model + adapter: {str(e)}")
# === Request Schema ===
class EmailInput(BaseModel):
subject: str
body: str
# === Endpoint ===
@app.post("/classify")
async def classify_email(data: EmailInput):
prompt = f"""### Subject:\n{data.subject}\n\n### Body:\n{data.body}\n\n### Labels:"""
try:
result = pipe(prompt, max_new_tokens=50, do_sample=True, top_k=50, top_p=0.95)
full_text = result[0]["generated_text"]
label_section = full_text.split("### Labels:")[1].strip()
return {"label": label_section}
except Exception as e:
raise HTTPException(status_code=500, detail=f"Model inference failed: {str(e)}")
|