Files
vector-search-demo/oravector-demo/backend/main_oracle.py
T
dierk 4e68b2f226 Serve frontends via FastAPI static files to fix Brave browser file access block
Each backend now mounts its frontend directory at /ui/ so the UIs are
accessible via http://localhost:800x/ui/ instead of file:// URLs.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-19 11:40:42 +02:00

54 lines
1.6 KiB
Python

import os
import array
from fastapi import FastAPI, Query
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import FileResponse
from fastapi.staticfiles import StaticFiles
from dotenv import load_dotenv
from db_oracle import get_connection
from embedder import embed_text
load_dotenv()
PHOTOS_DIR = os.getenv("PHOTOS_DIR")
FRONTEND_DIR = os.path.join(os.path.dirname(__file__), "../../oravector-demo/frontend")
app = FastAPI()
app.add_middleware(CORSMiddleware, allow_origins=["*"], allow_methods=["*"], allow_headers=["*"])
app.mount("/ui", StaticFiles(directory=os.path.abspath(FRONTEND_DIR), html=True), name="ui")
@app.get("/search")
def search(q: str = Query(...), limit: int = Query(12)):
vec = array.array("f", embed_text(q))
conn = get_connection()
cur = conn.cursor()
cur.execute(
"""
SELECT filename, 1 - VECTOR_DISTANCE(embedding, :vec, COSINE) AS score
FROM images
ORDER BY VECTOR_DISTANCE(embedding, :vec, COSINE)
FETCH FIRST :lim ROWS ONLY
""",
{"vec": vec, "lim": limit},
)
rows = cur.fetchall()
cur.close()
conn.close()
return [{"filename": r[0], "score": round(r[1], 4)} for r in rows]
@app.get("/stats")
def stats():
conn = get_connection()
cur = conn.cursor()
cur.execute("SELECT COUNT(*) FROM images")
count = cur.fetchone()[0]
cur.close()
conn.close()
return {"count": count}
@app.get("/photos/{filename}")
def get_photo(filename: str):
path = os.path.join(PHOTOS_DIR, filename)
return FileResponse(path, media_type="image/jpeg")