CT-207 changes in OffCommand

            device = self.target

            device = self.target

            subelement_thr = {}

            subelement_thr = {}

            self.thread_succeeded = {}

            self.thread_succeeded = {}

            try:

            off_failed = False

                # First loop that start the sub-element threads to get the ObsState.EMPTY

            # First loop that start the sub-element threads to get the ObsState.EMPTY

                for fqdn in device._sc_subarray_fqdn:

            for fqdn in device._sc_subarray_fqdn:

                    # check if the sub-element subarray is already in the

                # check if the sub-element subarray is already in the

                    # requested state

                # requested state

                    if device._sc_subarray_state[fqdn] == tango.DevState.OFF:

                if device._sc_subarray_state[fqdn] == tango.DevState.OFF:

                        continue

                    continue

                    if device._sc_subarray_obs_state[fqdn] != ObsState.EMPTY:

                if device._sc_subarray_obs_state[fqdn] != ObsState.EMPTY:

                        subelement_thr[fqdn] = threading.Thread(target=self.off_sequence,

                    subelement_thr[fqdn] = threading.Thread(target=self.off_sequence,

                                                               name="Thread-OffSequence",

                                                           name="Thread-OffSequence",

                                                               args=(fqdn,))

                                                           args=(fqdn,))

                        subelement_thr[fqdn].start()

                    subelement_thr[fqdn].start()

                # Second loop check if the thread is succeeded and send the Off command to sub-element

                else:

                    self.logger.info(f'ObsState of device {fqdn} is not EMPTY. ObsState:{device._sc_subarray_obs_state[fqdn]}')

            # Second loop check if the thread is succeeded and send the Off command to sub-element

            for fqdn in subelement_thr.keys():

                subelement_thr[fqdn].join()

            if any(self.thread_succeeded[fqdn] == True for fqdn in subelement_thr.keys()):

                for fqdn in subelement_thr.keys():

                for fqdn in subelement_thr.keys():

                    subelement_thr[fqdn].join()

                    try:

                    if not self.thread_succeeded[fqdn]:

                        (result_code, message) = device._sc_subarray_proxies[fqdn].Off()

                        self.logger.info(f'ObsState of device {fqdn} is not EMPTY. ObsState:{device._sc_subarray_obs_state[fqdn]}')

                    except tango.DevFailed as tango_err:

                        # TODO: GM: anche se non sono EMPTY li mandiamo in OFF?

                        message = str(tango_err.args[0].desc)

                        if fqdn != device.CbfSubarray:

                        result_code = ResultCode.FAILED

                            device._health_state = HealthState.DEGRADED

                            continue

                if result_code == ResultCode.FAILED:

                        else:

                    self.logger.error("Off command failed on device {}".format(fqdn))

                            # TODO: check message

                    self.logger.info(message)

                            return ResultCode.FAILED, 'CBF is not EMPTY, impossible to send OFF command'

                    off_failed = True          

                    # turn off the sub-element

                    (result_code, message) = device._sc_subarray_proxies[fqdn].Off()

            if off_failed:

                    if result_code == ResultCode.FAILED:

                return ResultCode.FAILED, 'Off command Failed'

                        self.logger.error("Off command failed on device {}".format(fqdn))

                        if fqdn != device.CbfSubarray:

                            device._health_state = HealthState.DEGRADED

                            continue

                        else:

                            return ResultCode.FAILED, message

            # TODO: OFF the CSP-Subarray?

            except tango.DevFailed as tango_err:

                message = str(tango_err.args[0].desc)

                return ResultCode.FAILED, message

            super().do()

            message = "Off command completed OK"

            message = "Off command completed OK"

            self.logger.info(message)

            self.logger.info(message)

            return ResultCode.OK, message

            return ResultCode.OK, message