public static DecayRpcScheduler.MetricsProxy GetInstance(string @namespace)
{
lock (typeof(MetricsProxy))
{
DecayRpcScheduler.MetricsProxy mp = Instances[@namespace];
if (mp == null)
{
// We must create one
mp = new DecayRpcScheduler.MetricsProxy(@namespace);
Instances[@namespace] = mp;
}
return(mp);
}
}
/// <summary>Create a decay scheduler.</summary>
/// <param name="numQueues">number of queues to schedule for</param>
/// <param name="ns">
/// config prefix, so that we can configure multiple schedulers
/// in a single instance.
/// </param>
/// <param name="conf">configuration to use.</param>
public DecayRpcScheduler(int numQueues, string ns, Configuration conf)
{
if (numQueues < 1)
{
throw new ArgumentException("number of queues must be > 0");
}
this.numQueues = numQueues;
this.decayFactor = ParseDecayFactor(ns, conf);
this.decayPeriodMillis = ParseDecayPeriodMillis(ns, conf);
this.identityProvider = this.ParseIdentityProvider(ns, conf);
this.thresholds = ParseThresholds(ns, conf, numQueues);
// Setup delay timer
Timer timer = new Timer();
DecayRpcScheduler.DecayTask task = new DecayRpcScheduler.DecayTask(this, timer);
timer.ScheduleAtFixedRate(task, 0, this.decayPeriodMillis);
DecayRpcScheduler.MetricsProxy prox = DecayRpcScheduler.MetricsProxy.GetInstance(
ns);
prox.SetDelegate(this);
}