diff --git a/main2.py b/main2.py
new file mode 100644
index 0000000..aa9ff3c
--- /dev/null
+++ b/main2.py
@@ -0,0 +1,80 @@
+import base64
+import binascii
+
+import uvicorn
+from fastapi import FastAPI
+import casbin
+
+from api.deps import get_current_user2
+from core.config import settings
+from starlette.middleware.cors import CORSMiddleware
+from starlette.authentication import AuthenticationBackend, AuthenticationError, AuthCredentials, BaseUser, SimpleUser
+from starlette.middleware.authentication import AuthenticationMiddleware
+from fastapi_authz import CasbinMiddleware
+
+from db import connect_to_mongo, close_mongo_connection, get_database
+from utils import Adapter
+
+app = FastAPI(title=settings.PROJECT_NAME)
+
+if settings.BACKEND_CORS_ORIGINS:
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=['*'],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+app.add_event_handler("startup", connect_to_mongo)
+
+app.add_event_handler("shutdown", close_mongo_connection)
+
+
+class CurrentUser(BaseUser):
+    def __init__(self, username: str, user_id: str) -> None:
+        self.username = username
+        self.id = user_id
+
+    @property
+    def is_authenticated(self) -> bool:
+        return True
+
+    @property
+    def display_name(self) -> str:
+        return self.username
+
+    @property
+    def identity(self) -> str:
+        return ''
+
+
+class BasicAuth(AuthenticationBackend):
+    async def authenticate(self, request):
+        if "Authorization" not in request.headers:
+            return None
+
+        auth = request.headers["Authorization"]
+        if len(auth) < 20:
+            return None
+        try:
+            user = get_current_user2(auth.split(' ')[1])
+        except (ValueError, UnicodeDecodeError, binascii.Error):
+            raise AuthenticationError("Invalid basic auth credentials")
+
+        return AuthCredentials(["authenticated"]), CurrentUser(user.name, user.id)
+
+
+
+enforcer = casbin.Enforcer('rbac_model.conf', Adapter(settings.DATABASE_URI,settings.MDB_DB))
+app.add_middleware(CasbinMiddleware, enforcer=enforcer)
+app.add_middleware(AuthenticationMiddleware, backend=BasicAuth())
+
+
+
+
+from api.api_v1.api import api_router
+
+app.include_router(api_router, prefix=settings.API_V1_STR)
+
+if __name__ == '__main__':
+    uvicorn.run(app='main2:app', host="0.0.0.0", port=8899, reload=True, debug=True)
diff --git a/rbac_model.conf b/rbac_model.conf
new file mode 100644
index 0000000..0d4f321
--- /dev/null
+++ b/rbac_model.conf
@@ -0,0 +1,14 @@
+[request_definition]
+r = sub, obj, act
+
+[policy_definition]
+p = sub, obj, act
+
+[role_definition]
+g = _, _
+
+[policy_effect]
+e = some(where (p.eft == allow))
+
+[matchers]
+m = (p.sub == "*" || g(r.sub, p.sub)) && (r.obj == p.obj || keyMatch(r.obj, p.obj)) && (p.act == "*" || r.act == p.act)
\ No newline at end of file
diff --git a/rbac_policy.csv b/rbac_policy.csv
new file mode 100644
index 0000000..f5c797f
--- /dev/null
+++ b/rbac_policy.csv
@@ -0,0 +1,7 @@
+
+p, *, /api/v1/user/login, *
+p, *, /api/v1/project/, *
+p, *, /docs, *
+p, *, /openapi.json, *
+
+g, cathy, dataset1_admin
\ No newline at end of file