[GitHub] [mynewt-core] ccollins476ad opened a new pull request #1864: mgmt/imgmgr: Log image management events

[GitBox <gi...@apache.org>]

ccollins476ad opened a new pull request #1864: mgmt/imgmgr: Log image management events
URL: https://github.com/apache/mynewt-core/pull/1864
 
 
   This PR adds logging for four image management events.
   
   It will be a nuisance to change the format of these log entries in the future, so we should try to get them right the first time.  Please don't hold back in critiquing the log entry formats!
   
   All events are CBOR-encoded:
   ```
   up_start:
       When: upon receiving an upload request with an offset of 0.
       Structure:
       {
           "ev": "up_start",
           "status": <mgmt-error-code (int)>
       }
   
   up_done:
       When: upon receiving an upload request containing the final chunk of
             an image OR a failed upload request with a non-zero offset.
       Structure:
       {
           "ev": "up_done",
           "status": <mgmt-error-code (int)>
       }
   
   pending:
       When: upon receiving a non-permanent `set-pending` request.
       Structure:
       {
           "ev": "pending",
           "status": <mgmt-error-code (int)>,
           "hash": <image-hash (byte-string)>
       }
   
   confirmed:
       When: upon receiving a `confirm` request OR a permanent
             `set-pending` request.
       Structure:
       {
           "ev": "confirmed",
           "status": <mgmt-error-code (int)>,
           "hash": <image-hash (byte-string)> (only present for `set-pending`)
       }
   ```

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