2.7.1: lastcheckin attribute in web socket notification

[ebaauw]

Describe the bug

I'm seeing an undocumented lastcheckin attribute in the web socket notifications, but this attribute is not exposed by the API.

Also this new (?) attribute seems to be in UTC, but doesn't end in Z.

Steps to reproduce the behavior

Run deCONZ and monitor the web socket notifications, e.g. through dc_eventlog.

Expected behavior

API and web socket notifications should be consistent.

Newly introduced date/time attributes in UTC should end with Z.

Screenshots

Dec 10 23:49:56 pi6 dc_eventlog[667]: /sensors/5/state: {"lastcheckin":"2020-12-10T22:49:56.733"}
Dec 10 23:49:56 pi6 dc_eventlog[667]: /sensors/6/state: {"lastcheckin":"2020-12-10T22:49:56.733"}

$ ph get /sensors/5
{
  "config": {
    "battery": 100,
    "on": true,
    "pending": [],
    "reachable": true
  },
  "ep": 35,
  "etag": "c30439c7e2d1b15b93861a5d8a9d02ac",
  "lastseen": "2020-12-10T22:51Z",
  "manufacturername": "Develco Products A/S",
  "modelid": "SMSZB-120",
  "name": "Smoke Detector",
  "state": {
    "fire": false,
    "lastupdated": "2020-12-10T22:50:01.462",
    "lowbattery": false,
    "test": false
  },
  "swversion": "2018-11-19 11:09",
  "type": "ZHAFire",
  "uniqueid": "00:15:bc:00:31:00:70:2a-23-0500"
}
$ ph get /sensors/6
{
  "config": {
    "offset": 0,
    "on": true,
    "reachable": true
  },
  "ep": 38,
  "etag": "1a3a2e1ebc0729df39bafacfb72529ab",
  "lastseen": "2020-12-10T22:51Z",
  "manufacturername": "Develco Products A/S",
  "modelid": "SMSZB-120",
  "name": "Temperature 6",
  "state": {
    "lastupdated": "2020-12-10T22:50:57.078",
    "temperature": 2368
  },
  "swversion": "2018-11-19 11:09",
  "type": "ZHATemperature",
  "uniqueid": "00:15:bc:00:31:00:70:2a-26-0402"
}

Environment

• Host system: Raspberry Pi
• Running method: Raspbian
• Firmware version: 26680700
• deCONZ version: 2.7.1
• Device: RaspBee II
• Do you use an USB extension cable: (yes / no) -- only relevant for ConBee I/II
• Is there any other USB or serial devices connected to the host system? If so: Which?

deCONZ Logs

Additional context

[manup]

Good catch, not sure yet if it's better to just make the attribute non public for now as it's only used internally to determine that the cluster is working and properly configured (bound). The timestamp refers to the last received Poll Control cluster check-in command.

[github-actions[bot]]

As there has not been any response in 28 days, this issue will be closed. @ OP: If this issue is solved post what fixed it for you. If it is not solved, request to get this opened again.