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Sync ForgerCommitment and use it in coord

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Previously the coordinator was erroneously using Slot.BatchesLen to determine
when anyone can forge.  The correct behaviour is implmenented with the boolean
flag `ForgerCommitment`, that is set to true only when there's a batch before
the deadline within a slot.

Delete Slot.BatchesLen, and the synchronization code of this value from the
Synchronizer, as this is not needed
This commit is contained in:
Eduard S
2020-12-23 14:37:30 +01:00
parent cd6eb44c16
commit 8267d007c9
11 changed files with 303 additions and 55 deletions
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14
db/historydb/historydb.go
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@@ -293,11 +293,15 @@ func (hdb *HistoryDB) GetBatches(from, to common.BatchNum) ([]common.Batch, erro
return db.SlicePtrsToSlice(batches).([]common.Batch), tracerr.Wrap(err)
}
// GetBatchesLen retrieve number of batches from the DB, given a slotNum
func (hdb *HistoryDB) GetBatchesLen(slotNum int64) (int, error) {
row := hdb.db.QueryRow("SELECT COUNT(*) FROM batch WHERE slot_num = $1;", slotNum)
var batchesLen int
return batchesLen, tracerr.Wrap(row.Scan(&batchesLen))
// GetFirstBatchBlockNumBySlot returns the ethereum block number of the first
// batch within a slot
func (hdb *HistoryDB) GetFirstBatchBlockNumBySlot(slotNum int64) (int64, error) {
row := hdb.db.QueryRow(
`SELECT eth_block_num FROM batch
WHERE slot_num = $1 ORDER BY batch_num ASC LIMIT 1;`, slotNum,
)
var blockNum int64
return blockNum, tracerr.Wrap(row.Scan(&blockNum))
}
// GetLastBatchNum returns the BatchNum of the latest forged batch