Add Assurance Metrics

[xmidt-org]

Add Assurance Metrics

[shilpa24balaji]

@schmidtw ,
I had few questions on this issue:

1. Could you please explain this metric in more detail or with an example "the count of the number of transitions between different blocking windows"
2. For "the time the process started" is it the Aker process start time that you are looking for?
3. All these metrics, should it be persisted across reboots and the count updated? Or are you looking for only metrics for every device for each reboot?
4. These metrics needs to be sent as WRP event with JSON payload?

[schmidtw]

Sure.

1. The idea is to count the number of times that a window either starts or ends (the blocked device list changes) to help show that the transitions are happening.
2. Yes.
3. These should not persist a reboot or restart, just store them in program memory.
4. I plan for the above to be a msgpack based payload, sent via WRP.

[shilpa24balaji]

Thanks @schmidtw
How frequent should these events be sent?

[schmidtw]

We'll set the default to something slow like once a day.

[guruchandru]

@schmidtw The DeviceBlockCount or dbc mentioned, is it like unique mac id that has been blocked since the aker service is started or just unique number of macs that are blocked for the same period in a schedule? If in 1st schedule 5 macs are blocked which are unique to that particular schedule and in 2nd schedule if 5 same macs used in 1st schedule are blocked they are unique to that schedule ... so the total count will be 10, is this correct? Or should we count only the unique macs in these both schedule i.e. 5?

[schmidtw]

In your example the total would be 10 since 5 were blocked, then 5 were unblocked.

[guruchandru]

Thanks @schmidtw . Will continue with that approach

[schmidtw]

Added with #177 .