Handle nullable 'Log' field and refresh 'last_comm' in dbFetchNodes#137
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…FetchNodes - Introduced `NodeUpdateLastComm` method in `cdb` for efficient batch updates. - Added into daemon ping and status `dbFetchNodes` the logic to update `last_comm` field for affected nodes via `NodeUpdateLastComm`.
- Updated `rows.Scan` to account for `Log` being nullable by using `sql.NullString`.
- Ensured `Log` is assigned correctly if the value is valid.
This fixes following error:
dbFindInstances ResmonLogLastFromObjectIDs: query scan rows: sql: Scan error on column index 4, name \"res_log\": converting NULL to string is unsupported
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Summary
This pull request addresses two issues:
Nullable
LogField Handling:Logfield is nullable (sql.NullString).NULLvalue to a string for theLogfield.Update
last_commin dbFetchNodes:NodeUpdateLastCommmethod for efficient batch updates of thelast_commfield.last_commfields updated duringdbFetchNodes.