static void Main(string[] args)
{
var authenticator = new NullClientAuthenticator();
var client = Client.Create("localhost", 9091);
var cachingPublisher = new CachingPublisher(client);
StartPublishing(cachingPublisher);
System.Threading.Thread.CurrentThread.Join();
}
private static void ScheduleUpdate(CachingPublisher cachingPublisher, string feed, string topic, Dictionary <string, object> data, Timer timer)
{
timer.Elapsed += (sender, args) =>
{
PublishUpdate(cachingPublisher, feed, topic, data);
ScheduleUpdate(cachingPublisher, feed, topic, data, timer);
};
timer.Interval = (long)(PublishMs * Rnd.NextDouble() * 100 + 5);
timer.Enabled = true;
}
private static void PublishUpdate(CachingPublisher cachingPublisher, string feed, string topic, Dictionary <string, object> data)
{
// Perturb the data a little.
var bid = (double)data["BID"];
var ask = (double)data["ASK"];
var spread = ask - bid;
var nextBid = Math.Round((bid + bid * Rnd.NextDouble() * 5.0 / 100.0) * 100.0) / 100.0;
double nextAsk = Math.Round((nextBid + spread) * 100.0) / 100.0;
var newData = new Dictionary <string, object>
{
{ "BID", nextBid },
{ "ASK", nextAsk }
};
cachingPublisher.Publish(feed, topic, newData);
}
private static List <Timer> StartPublishing(CachingPublisher cachingPublisher)
{
// Prepare some data.
Dictionary <string, Dictionary <string, object> > lseData = new Dictionary <string, Dictionary <string, object> >
{
{
"VOD",
new Dictionary <string, object>
{
{ "NAME", "Vodafone Group PLC" },
{ "BID", 140.60 },
{ "ASK", 140.65 }
}
},
{
"TSCO", new Dictionary <string, object>
{
{ "NAME", "Tesco PLC" },
{ "BID", 423.15 },
{ "ASK", 423.25 }
}
},
{
"SBRY",
new Dictionary <string, object>
{
{ "NAME", "J Sainsbury PLC" },
{ "BID", 325.30 },
{ "ASK", 325.35 }
}
}
};
Dictionary <string, Dictionary <string, Dictionary <string, object> > > marketData = new Dictionary <string, Dictionary <string, Dictionary <string, object> > >();
marketData.Add("LSE", lseData);
// Publish the data.
foreach (var feedItem in marketData)
{
var feed = feedItem.Key;
var topicData = feedItem.Value;
cachingPublisher.AddNotification(feed);
foreach (var topicItem in topicData)
{
var topic = topicItem.Key;
var data = topicItem.Value;
cachingPublisher.Publish(feed, topic, data);
}
}
var timers = new List <Timer>();
foreach (var feedItem in marketData)
{
var feed = feedItem.Key;
var topicData = feedItem.Value;
foreach (var topicItem in topicData)
{
var topic = topicItem.Key;
var data = topicItem.Value;
var timer = new Timer();
timers.Add(timer);
ScheduleUpdate(cachingPublisher, feed, topic, data, timer);
}
}
return(timers);
}
