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msg
Browse files- main.py +19 -7
- requirements.txt +1 -0
main.py
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@@ -1,5 +1,5 @@
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from fastapi import FastAPI, File, UploadFile, HTTPException, Depends
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from fastapi.security import OAuth2PasswordBearer
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from jose import JWTError, jwt
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from pinecone import Pinecone
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import os
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@@ -13,7 +13,8 @@ from datetime import datetime, timedelta
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# Load environment variables
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load_dotenv()
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#
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 30
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@@ -41,15 +42,18 @@ unsplash_index = pc.Index(index_name)
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# Load CLIP model and processor
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model = CLIPModel.from_pretrained("openai/clip-vit-base-patch32")
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processor = AutoProcessor.from_pretrained("openai/clip-vit-base-patch32")
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# OAuth2 authentication
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
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def create_access_token(data: dict, expires_delta: timedelta = None):
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to_encode = data.copy()
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expire = datetime.utcnow() + (expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES))
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to_encode.update({"exp": expire})
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return jwt.encode(to_encode,
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def authenticate_user(username: str, password: str):
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user = fake_users_db.get(username)
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@@ -57,9 +61,10 @@ def authenticate_user(username: str, password: str):
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return None
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return user
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def get_current_user(token: str = Depends(oauth2_scheme)):
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try:
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payload = jwt.decode(token,
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username: str = payload.get("sub")
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if username is None or username not in fake_users_db:
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raise HTTPException(status_code=401, detail="Invalid authentication")
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@@ -67,24 +72,28 @@ def get_current_user(token: str = Depends(oauth2_scheme)):
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except JWTError:
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raise HTTPException(status_code=401, detail="Invalid authentication")
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@app.post("/token")
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async def login(
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user = authenticate_user(
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if not user:
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raise HTTPException(status_code=400, detail="Incorrect username or password")
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access_token = create_access_token(data={"sub": user["username"]})
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return {"access_token": access_token, "token_type": "bearer"}
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def get_text_embedding(text: str):
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inputs = processor(text=[text], return_tensors="pt", padding=True, truncation=True)
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text_features = model.get_text_features(**inputs)
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return text_features.detach().cpu().numpy().flatten().tolist()
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def get_image_embedding(image: Image.Image):
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inputs = processor(images=image, return_tensors="pt")
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image_features = model.get_image_features(**inputs)
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return image_features.detach().cpu().numpy().flatten().tolist()
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def search_similar_images(embedding: list, top_k: int = 10):
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results = unsplash_index.query(
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vector=embedding,
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@@ -94,6 +103,7 @@ def search_similar_images(embedding: list, top_k: int = 10):
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)
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return results["matches"]
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@app.get("/search/text/")
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async def search_by_text(query: str, user: str = Depends(get_current_user)):
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if not query:
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@@ -102,6 +112,7 @@ async def search_by_text(query: str, user: str = Depends(get_current_user)):
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matches = search_similar_images(embedding)
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return {"matches": [{"id": m["id"], "score": m["score"], "url": m["metadata"]["url"]} for m in matches]}
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@app.post("/search/image/")
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async def search_by_image(file: UploadFile = File(...), user: str = Depends(get_current_user)):
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try:
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@@ -113,6 +124,7 @@ async def search_by_image(file: UploadFile = File(...), user: str = Depends(get_
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"Error processing image: {str(e)}")
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run(app, host="0.0.0.0", port=8000)
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from fastapi import FastAPI, File, UploadFile, HTTPException, Depends, Form
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from fastapi.security import OAuth2PasswordBearer
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from jose import JWTError, jwt
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from pinecone import Pinecone
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import os
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# Load environment variables
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load_dotenv()
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# JWT Config
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SECRET_KEY = os.getenv("JWT_SECRET", "default_secret") # Use a secure secret in production
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ALGORITHM = "HS256"
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ACCESS_TOKEN_EXPIRE_MINUTES = 30
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# Load CLIP model and processor
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model = CLIPModel.from_pretrained("openai/clip-vit-base-patch32")
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processor = AutoProcessor.from_pretrained("openai/clip-vit-base-patch32")
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model.eval() # Ensure model is in evaluation mode
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# OAuth2 authentication
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token")
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+
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def create_access_token(data: dict, expires_delta: timedelta = None):
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to_encode = data.copy()
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expire = datetime.utcnow() + (expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES))
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to_encode.update({"exp": expire})
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return jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
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def authenticate_user(username: str, password: str):
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user = fake_users_db.get(username)
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return None
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return user
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def get_current_user(token: str = Depends(oauth2_scheme)):
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try:
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payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
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username: str = payload.get("sub")
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if username is None or username not in fake_users_db:
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raise HTTPException(status_code=401, detail="Invalid authentication")
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except JWTError:
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raise HTTPException(status_code=401, detail="Invalid authentication")
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@app.post("/token")
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async def login(username: str = Form(...), password: str = Form(...)):
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user = authenticate_user(username, password)
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if not user:
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raise HTTPException(status_code=400, detail="Incorrect username or password")
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access_token = create_access_token(data={"sub": user["username"]})
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return {"access_token": access_token, "token_type": "bearer"}
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def get_text_embedding(text: str):
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inputs = processor(text=[text], return_tensors="pt", padding=True, truncation=True)
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text_features = model.get_text_features(**inputs)
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return text_features.detach().cpu().numpy().flatten().tolist()
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def get_image_embedding(image: Image.Image):
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inputs = processor(images=image, return_tensors="pt")
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image_features = model.get_image_features(**inputs)
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return image_features.detach().cpu().numpy().flatten().tolist()
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+
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def search_similar_images(embedding: list, top_k: int = 10):
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results = unsplash_index.query(
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vector=embedding,
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)
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return results["matches"]
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+
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@app.get("/search/text/")
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async def search_by_text(query: str, user: str = Depends(get_current_user)):
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if not query:
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matches = search_similar_images(embedding)
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return {"matches": [{"id": m["id"], "score": m["score"], "url": m["metadata"]["url"]} for m in matches]}
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@app.post("/search/image/")
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async def search_by_image(file: UploadFile = File(...), user: str = Depends(get_current_user)):
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try:
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"Error processing image: {str(e)}")
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run(app, host="0.0.0.0", port=8000)
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requirements.txt
CHANGED
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@@ -8,3 +8,4 @@ numpy
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pinecone
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python-jose[cryptography]
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python-multipart
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pinecone
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python-jose[cryptography]
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python-multipart
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jose
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