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fix: add input validation for empty chat messages #193

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fix: add input validation for empty chat messages #193

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8 changes: 7 additions & 1 deletion server-https/app.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
from fastapi import FastAPI, HTTPException
from fastapi.responses import StreamingResponse
from fastapi.middleware.cors import CORSMiddleware
from pydantic import BaseModel
from pydantic import BaseModel, validator
import uvicorn
from typing import Dict, Any, List, Optional, AsyncGenerator
from sentence_transformers import SentenceTransformer
Expand Down Expand Up @@ -111,6 +111,12 @@ class ChatRequest(BaseModel):
message: str
stream: Optional[bool] = True

@validator("message")
def message_must_not_be_empty(cls, v):
if not v or not v.strip():
raise ValueError("message must not be empty or whitespace-only")
return v.strip()

def milvus_search(query: str, top_k: int = 5) -> Dict[str, Any]:
"""Execute a semantic search in Milvus and return structured JSON serializable results."""
try:
Expand Down