def get_user_sub()

in backend/layers/shared.py [0:0]

• 8 lines of code
• 2 McCabe index (conditional complexity)

def get_user_sub(jwt_token):
    """
    Validate JWT claims & retrieve user identifier
    """
    try:
        verified_claims = cognitojwt.decode(
            jwt_token, os.environ["AWS_REGION"], os.environ["USERPOOL_ID"]
        )
    except (cognitojwt.CognitoJWTException, ValueError):
        verified_claims = {}

    return verified_claims.get("sub")