private static void Main(string[] args)
{
var preludeFileName = args[0];
var preludeScript = File.ReadAllText(preludeFileName);
var queryFileName = args[1];
var queryScript = File.ReadAllText(queryFileName);
Func <string, Tuple <string, string> > loadModule =
moduleName =>
{
var moduleFilename = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, moduleName + ".js");
return
(Tuple.Create(
File.ReadAllText(moduleFilename),
moduleFilename));
};
using (var prelude = new PreludeScript(preludeScript, preludeFileName, loadModule))
using (var query = new QueryScript(prelude, queryScript, queryFileName))
using (var events = File.OpenText(args[2]))
using (var output = (args.Length >= 4) ? File.CreateText(args[3]) : Console.Out)
{
long totalMs = 0;
int count = 0;
query.Initialize();
if (output != null)
{
var capturedOutput = output;
query.Emit += s => capturedOutput.WriteLine(s.Trim());
}
var sw = new Stopwatch();
while (!events.EndOfStream)
{
var eventJson = events.ReadLine().Trim();
if (!string.IsNullOrWhiteSpace(eventJson))
{
sw.Start();
query.Push(eventJson, null);
count++;
sw.Stop();
}
}
totalMs = sw.ElapsedMilliseconds;
Console.WriteLine(query.GetState());
Console.WriteLine(query.GetStatistics());
Console.WriteLine("Total JS push processing time: {0,5:f2} ms", totalMs);
Console.WriteLine("Average time per 1000 pushes: {0,5:f2} ms", 1000f * totalMs / (float)count);
Console.WriteLine("Pure JS events per second: {0,5:f2} events", count * 1000f / totalMs);
Console.WriteLine("Total events processed: {0} events", count);
}
}
public bool ProcessEvent(
EventPosition position, string streamId, string eventType, string category, Guid eventid,
int sequenceNumber, string metadata, string data, out string newState, out EmittedEvent[] emittedEvents)
{
if (eventType == null)
{
throw new ArgumentNullException("eventType");
}
if (streamId == null)
{
throw new ArgumentNullException("streamId");
}
_emittedEvents = null;
_query.Push(
data.Trim(), // trimming data passed to a JS
new string[] { streamId, eventType, category ?? "", sequenceNumber.ToString(CultureInfo.InvariantCulture), metadata ?? "" });
newState = _query.GetState();
emittedEvents = _emittedEvents == null ? null : _emittedEvents.ToArray();
return(true);
}