code: def get_state():
      
      sdp_state = SDPState()
      errval, errdict = _check_status(sdp_state)
      if errval == "error":
          LOG.debug(errdict['reason'])
          return dict(
              current_state="unknown",
              target_state="unknown",
              last_updated="unknown",
              reason=errdict['reason']
          )
      _last_updated = sdp_state.current_timestamp
      if sdp_state.target_timestamp > _last_updated:
          _last_updated = sdp_state.target_timestamp
  
      return dict(
          current_state=sdp_state.current_state,
          target_state=sdp_state.target_state,
          allowed_target_states=sdp_state.allowed_target_states[
              sdp_state.current_state],
          last_updated=_last_updated.isoformat()
      ), HTTPStatus.OK
docs: SDP State.
  
      Return current state; target state and allowed
      target states.