internal static void Startup(CompletionState uncompleted, int lastActivityIdFromDb)
{
CommunicationMonitor.Stop();
Serializer.Reset();
DependencyManager.Reset();
TerminationHistory.Reset(uncompleted.LastActivityId, uncompleted.Gaps);
Serializer.Start(lastActivityIdFromDb, uncompleted.LastActivityId, uncompleted.Gaps);
CommunicationMonitor.Start();
}
//==============================================================================================
internal Messaging.CompletionState LoadCompletionState(out int lastDatabaseId)
{
var isDbReady = IsDatabaseReadyAsync(CancellationToken.None).GetAwaiter().GetResult();
var ids = isDbReady ? _dataProvider.GetUnprocessedActivityIds() : Array.Empty <int>();
lastDatabaseId = ids.LastOrDefault();
var result = new Messaging.CompletionState();
// there is no unprocessed: last item is the last database id
if (ids.Length <= 1)
{
result.LastActivityId = lastDatabaseId;
return(result);
}
// there is only one unprocessed element
if (ids.Length == 2)
{
result.LastActivityId = lastDatabaseId;
result.Gaps = new[] { ids[ids.Length - 2] };
return(result);
}
// if last unprocessed and last database id does not equal,
// each item is gap
if (lastDatabaseId != ids[ids.Length - 2])
{
// i-2 -1
// _,_,3,_,_,6,_,8,9,10,11 ,12
result.LastActivityId = lastDatabaseId;
result.Gaps = ids.Take(ids.Length - 1).ToArray();
return(result);
}
// i-2 -1
// _,_,3,_,_,6,_,8,9,10,11,12 ,12
var continuousFrom = 0;
for (var i = ids.Length - 2; i >= 1; i--)
{
if (ids[i] != ids[i - 1] + 1)
{
continuousFrom = i;
break;
}
}
result.LastActivityId = ids[continuousFrom] - 1;
result.Gaps = ids.Take(continuousFrom).ToArray();
return(result);
}
/// <summary>Only for tests</summary>
internal static void _setCurrentExecutionState(CompletionState state)
{
Serializer.Reset(state.LastActivityId);
DependencyManager.Reset();
TerminationHistory.Reset(state.LastActivityId, state.Gaps);
}