public void CatchUp(long from)
{
var reader = new PostgresqlJournalReader(_memstateSettings);
while (true)
{
var lastRecordId = from;
var records = reader.GetRecords(lastRecordId);
foreach (var record in records)
{
lastRecordId = record.RecordNumber;
try
{
_handler(record);
}
catch (Exception exception)
{
_log.LogError(exception, $"Exception occured in {GetType().Name}.CatchUp");
}
}
lock (Lock)
{
if (_buffer.TryPeek(out var queuedRecord))
{
if (queuedRecord.RecordNumber <= lastRecordId)
{
// Caught up
while (_buffer.TryDequeue(out queuedRecord))
{
try
{
_handler(queuedRecord);
}
catch (Exception exception)
{
_log.LogError(exception, $"Exception occured in {GetType().Name}.CatchUp");
}
}
}
}
else
{
_ready = true;
return;
}
}
}
}
public PostgresqlJournalSubscription(PostgresqlSettings settings, Action <JournalRecord> handler, long nextRecordId)
{
Ensure.NotNull(settings, nameof(settings));
_settings = settings;
_handler = handler;
_nextRecordId = nextRecordId;
_journalReader = new PostgresqlJournalReader(settings);
_listenerThread = new Thread(Listen)
{
Name = "Memstate:Postgresql:NotificationsListener"
};
_readerThread = new Thread(Reader)
{
Name = "Memstate:Postgresql:Reader"
};
}