op-supervisor: Load the starting block from log db

[r4525532]

Load the starting block from log db

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.69%. Comparing base (d4a22a7) to head (c416e97).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #11090   +/-   ##
========================================
  Coverage    60.69%   60.69%           
========================================
  Files           20       20           
  Lines         1781     1781           
  Branches        71       71           
========================================
  Hits          1081     1081           
  Misses         667      667           
  Partials        33       33           

Flag	Coverage Δ
cannon-go-tests	79.69% <ø> (ø)
chain-mon-tests	27.14% <ø> (ø)
sdk-tests	16.44% <ø> (ø)

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[ajsutton]

Thanks for this. Left a comment suggestion how to make this fit in better with the need to handle only some logs from a block being written before shutdown.

[ajsutton]

LGTM thanks. Just one small tweak to improve the formatting of the comment.

[ajsutton]

Ah also can you run gofmt please? CI is failing with:

op-supervisor/supervisor/backend/backend.go:60: File is not `goimports`-ed (goimports)
                checkPointBlock, _ ,err := logDB.ClosestBlockInfo(math.MaxUint64)