Thread CreateProjectionThread(string streamId, int index, CommandProcessorContext context, ManualResetEventSlim startEvt, CancellationToken token, Stat stat)
{
return(new Thread(() =>
{
var fileName = "smartapptest-" + index;
var views = context.Client.Views;
var projection = new DistributionProjection(views.ReadAsJsonOrGetNew <DistributionView>(fileName));
var totalBytes = 0;
var sw = new Stopwatch();
startEvt.Wait(token);
sw.Start();
while (!token.IsCancellationRequested)
{
var nextOffset = projection.NextOffsetInBytes;
IEnumerable <RetrievedEventsWithMetaData> records;
try
{
records = context.Client.EventStores.ReadAllEvents(new EventStoreOffset(nextOffset), 10000);
}
catch (Exception e)
{
Interlocked.Increment(ref _failures);
context.Log.ErrorException(e, "Projection {0}: event read error", index);
Thread.Sleep(500);
continue;
}
var emptyData = true;
foreach (var dataRecord in records)
{
totalBytes += dataRecord.EventData.Length;
if (dataRecord.StreamId != streamId)
{
projection.NextOffsetInBytes = dataRecord.Next.OffsetInBytes;
continue;
}
projection.Handle(dataRecord.EventData);
projection.NextOffsetInBytes = dataRecord.Next.OffsetInBytes;
emptyData = false;
}
if (emptyData)
{
Thread.Sleep(1000);
continue;
}
try
{
views.WriteAsJson(projection.View, fileName);
}
catch (Exception e)
{
Interlocked.Increment(ref _failures);
context.Log.ErrorException(e, "Projection {0}: view write error", index);
}
}
sw.Stop();
stat.Count = totalBytes;
stat.ElapsedMsec = sw.ElapsedMilliseconds;
}));
}
Thread CreateProjectionThread(string streamId, int index, CommandProcessorContext context, ManualResetEventSlim startEvt, CancellationToken token, Stat stat)
{
return new Thread(() =>
{
var fileName = "smartapptest-" + index;
var views = context.Client.Views;
var projection = new DistributionProjection(views.ReadAsJsonOrGetNew<DistributionView>(fileName));
var totalBytes = 0;
var sw = new Stopwatch();
startEvt.Wait(token);
sw.Start();
while (!token.IsCancellationRequested)
{
var nextOffset = projection.NextOffsetInBytes;
IEnumerable<RetrievedEventsWithMetaData> records;
try
{
records = context.Client.EventStores.ReadAllEvents(new EventStoreOffset(nextOffset), 10000);
}
catch (Exception e)
{
Interlocked.Increment(ref _failures);
context.Log.ErrorException(e, "Projection {0}: event read error", index);
Thread.Sleep(500);
continue;
}
var emptyData = true;
foreach (var dataRecord in records)
{
totalBytes += dataRecord.EventData.Length;
if (dataRecord.StreamId != streamId)
{
projection.NextOffsetInBytes = dataRecord.Next.OffsetInBytes;
continue;
}
projection.Handle(dataRecord.EventData);
projection.NextOffsetInBytes = dataRecord.Next.OffsetInBytes;
emptyData = false;
}
if (emptyData)
{
Thread.Sleep(1000);
continue;
}
try
{
views.WriteAsJson(projection.View, fileName);
}
catch (Exception e)
{
Interlocked.Increment(ref _failures);
context.Log.ErrorException(e, "Projection {0}: view write error", index);
}
}
sw.Stop();
stat.Count = totalBytes;
stat.ElapsedMsec = sw.ElapsedMilliseconds;
});
}
