public async Task ProcessMessage(DeviceMessage message)
{
if (null == this.LastMessage || this.LastMessage.Latitude != message.Latitude || this.LastMessage.Longitude != message.Longitude)
{
// only sent a notification if the position has changed
var notifier = GrainFactory.GetGrain<IPushNotifierGrain>(0);
var speed = GetSpeed(this.LastMessage, message);
// record the last message
this.LastMessage = message;
// forward the message to the notifier grain
var velocityMessage = new VelocityMessage(message, speed);
await notifier.SendMessage(velocityMessage);
}
else
{
// the position has not changed, just record the last message
this.LastMessage = message;
}
}
public void LocationUpdate(VelocityMessage message)
{
// Forward a single messages to all browsers
Clients.Group("BROWSERS").locationUpdate(message);
}
public Task SendMessage(VelocityMessage message)
{
// add a message to the send queue
messageQueue.Add(message);
if (messageQueue.Count > 25)
{
// if the queue size is greater than 25, flush the queue
Flush();
}
return TaskDone.Done;
}
