public static (long Ledger, long Entry, long Index) Calculate(long start, PersistentTopicInternalStats stats)
{
var ledgers = stats.Ledgers.Where(x => x.Entries > 0);
long?entries = 0L;
long?ledgerId = 0L;
long?entryId = 0L;
foreach (var ledger in ledgers)
{
entries += ledger.Entries;
if (start > entries)
{
continue;
}
var diff = Math.Max(0L, entries.Value - start);
entries -= diff;
var entry = Math.Max(0L, (ledger.Entries.Value - diff) - 1);
ledgerId = ledger.LedgerId;
entryId = entry;
break;
}
if (ledgerId == 0L)
{
if (stats.CurrentLedgerEntries > 0)
{
entries += stats.CurrentLedgerEntries;
var diff = Math.Max(0L, entries.Value - start);
entries -= diff;
var entry = Math.Max(0L, (stats.CurrentLedgerEntries - diff).Value - 1);
ledgerId = long.Parse(stats.LastConfirmedEntry.Split(":")[0]);
entryId = entry;
}
else
{
var lac = stats.LastConfirmedEntry.Split(":");
entries += long.Parse(lac[1] + 1);
var diff = Math.Max(0L, entries.Value - start);
entries -= diff;
var entry = Math.Max(0L, (stats.CurrentLedgerEntries - diff).Value - 1);
ledgerId = long.Parse(lac[0]);
entryId = entry;
}
}
return(ledgerId.Value, entryId.Value, Math.Max(0, entries.Value));
}
public static (long Ledger, long Entry, long Index) NextFlow(PersistentTopicInternalStats stats)
{
var ids = stats.LastConfirmedEntry.Split(":");
return(long.Parse(ids[0]), long.Parse(ids[1]), stats.NumberOfEntries.Value);
}
