Show number of current monitored items as part of diagnostic information

[martin-weber]

It would be helpful to show in the diagnostic information output:

• The number of currently monitored items
• (Optional) The total number of configured items
• (Optional) The number of configured items that are not monitored due to failure

This would improve the diagnostic when deploying a new configuration. It would male it much easier to check if the new configuration added / removed monitored items and compare this number of items with the count items received after IoT Hub.

Currently after changing a bigger configuration, we need to search the log file for lines like the followings: Added <X_monitored> monitored items to subscription Set Monitoring to Reporting for <X_configured> nodes in subscription and sum up the X_configured and X_monitored nodes to know how many nodes are configured and how many nodes are monitored.

It would be great to see this up to date over time in the diagnostic information.

[koepalex]

Thanks for the feedback, we will handle this issue as feature request.

[marcschier]

Already showing good and bad nodes count in --di output since 2.8.2. Closing complete.