root@sonic:/home/cisco# show platform  temperature 
                 Sensor    Temperature    High TH    Low TH    Crit High TH    Crit Low TH    Warning          Timestamp
-----------------------  -------------  ---------  --------  --------------  -------------  ---------  -----------------
.....
         MB_PORT_Sensor         21.375      120.0      -5.0           125.0          -10.0      False  20240116 21:16:16
        MB_TMP421_Local          121.0      120.0      -5.0           125.0          -10.0       True  20240116 21:16:16
   MB_VDDS_VDDA_TEMP_L1           52.0      125.0      -5.0           135.0          -10.0      False  20240116 21:16:16
.....

def _refresh_temperature_status(self, parent_name, thermal, thermal_index):
.....

            warning = False
            if temperature != NOT_AVAILABLE and temperature_status.set_over_temperature(temperature, high_threshold):
                self._log_on_status_changed(not temperature_status.over_temperature,
                                            'High temperature warning cleared: {} temperature restored to {}C, high threshold {}C'.
                                            format(name, temperature, high_threshold),
                                            'High temperature warning: {} current temperature {}C, high threshold {}C'.
                                            format(name, temperature, high_threshold)
                                            )
            if temperature_status.over_temperature:
                # Formulate event for this fault: board temp sensor exceeded temp high threshold
                self.log_warning('Temp FAULT occured!')
                test_source = "sonic-event"
                test_event_tag = "EVENT"
                test_event_key = "{}:{}".format(test_source, test_event_tag)
                test_event_params = {
                    "id": "10",
                    "resource": "thermalctld",
                    "text": "sonic-event yang: thermal variation test",
                    "time-created": "Dec202023",
                    "type-id": "TEMPERATURE_EXCEEDED",
                    "severity": "CRITICAL",
                }
                # Get event handle and publish this thermal fault as and event
                evt_hdl = events_init_publisher(test_source)
                if evt_hdl:
                    self.log_info('Got the fault event publisher handle:{}'.format(evt_hdl))
                    # Sleep ASYNC_CONN_WAIT to ensure async connectivity is complete.
                    # Messages published before connection are silently dropped by ZMQ.
                    time.sleep(0.3)
  
                    pub_params = FieldValueMap()
                    evt_params = dict(test_event_params)
                    for k,v in evt_params.items():
                        pub_params[k] = v
                    rc = event_publish(evt_hdl, test_event_tag, pub_params)
                    if (rc != 0):
                        self.log_warning('Failed to publish event! rc:{}'.format(rc))
                    else:
                        self.log_info('Successfully published event rc:{}'.format(rc))
                else:
                    self.log_warning('Failed to get fault event publisher handle:{}'.format(evt_hdl))
            else:
                self.log_warning('Temp WITHIN RANGE')

            warning = warning | temperature_status.over_temperature

......