internal long LoadUncommittedEventsFromJournal(JournalReader _jreader)
{
long journalsn = 0;
while (_jreader.HasCommandsPending())
{
var cmd = _jreader.ReadCommand();
if (cmd != null)
{
if (cmd.CommandSN > LastExecutedCommandSN)
{
_waitingevents.Enqueue(cmd);
}
journalsn = Math.Max(journalsn, cmd.CommandSN);
}
}
return journalsn;
}
internal EventStore(string dbname, long lastcommittedcommandsn)
{
DatabaseName = dbname;
LastExecutedCommandSN = lastcommittedcommandsn;
JournalReader _jreader = new JournalReader(Configuration.BasePath, dbname);
long jsn = LoadUncommittedEventsFromJournal(_jreader);
_jreader.CloseFile();
_eventHandlerThread = new Thread(new ThreadStart(ExecuteEventCommands));
_eventHandlerThread.Start();
_jwriter = new JournalWriter(Configuration.BasePath, dbname);
if (Configuration.EnableOperationsLog)
_operationsLog = new JournalWriter(Configuration.BasePath, dbname, true);
// The journal can be empty so i have to evaluate the last committed command serial number
// and reset Command Serial number in the journal to ensure command execution coherency.
_jwriter.CommandSN = Math.Max(jsn, lastcommittedcommandsn);
}