The device service SDKs shall collect and report the following metrics
1) Metrics defined for all EdgeX services in ADR #0006
- Service uptime
- Cumulative API requests succeeded / failed / invalid
- Average response time for API requests
- Average and Maximum request size
Note: The API requests of interest are the device accesses. For Device service purposes "request size" is to be read as "event size"
2) Metrics defined for Device Services in ADR #0006
- Number of devices managed by this service
- Device requests
Note: For "Device requests" we shall provide:
- total number of events generated
- total number of readings generated
- number of events generated in the last sampling period (configurable with a default of 1 minute)
- data volume of events generated in the last sampling period.
3) Metrics which will replace the lastConnected field in v3
- Last successful read or write access (per device)
In addition the SDKs shall provide a facility for the device service implementations to collect and report custom metrics for that service.