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storage: Avoid panic when no previous versions in history (#88880)

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Signed-off-by: Dave Henderson <dave.henderson@grafana.com>
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Dave Henderson 2024-06-06 21:33:08 -04:00 committed by GitHub
parent 003e3efce9
commit c931a44503
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1 changed files with 5 additions and 0 deletions
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5
pkg/services/store/entity/sqlstash/sql_storage_server.go
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@ -1095,6 +1095,11 @@ func (s *sqlEntityServer) poll(since int64, out chan *entity.EntityWatchResponse
return err return err
} }
if len(history.Versions) == 0 {
ctxLogger.Error("error reading previous entity", "guid", updated.Guid, "err", "no previous version found")
return errors.New("no previous version found")
}
result.Previous = history.Versions[0] result.Previous = history.Versions[0]
} }