private String CollectDelays()
{
var result = "";
int count = Random.Next(4) + 1;
int delay = 0;
if (Tweaker.Lookup(hostname).ConsumeBandwith > 0)
{
int consumeBandwidthBps = Tweaker.Lookup(hostname).ConsumeBandwith;
if (consumeBandwidthBps < Constants.MAX_BANDWIDTH_BPS * 0.7)
{
delay = 0;
}
else if (consumeBandwidthBps >= Constants.MAX_BANDWIDTH_BPS)
{
delay = 400 + Random.Next(300);
}
else
{
double modifier = (consumeBandwidthBps - Constants.MAX_BANDWIDTH_BPS * 0.7) / (Constants.MAX_BANDWIDTH_BPS * 0.3);
delay = (int)(400 * modifier);
}
}
int addLatency = Tweaker.Lookup(hostname).AddLatency;
for (int i = 0; i <= count; i++)
{
result += (delay + Random.Next(70) + addLatency) + (i == count ? "" : ", ");
}
return(result);
}
internal static Tweaker Lookup(string hostname)
{
if (!Instances.ContainsKey(hostname))
{
Instances[hostname] = new Tweaker(hostname);
}
return(Instances[hostname]);
}
private String CollectPerformance()
{
int consumeCores = Tweaker.Lookup(hostname).ConsumeCores;
if (consumeCores == Constants.NUM_CORES /*All cores */)
{
return((1 + Random.Next(4)).ToString());
}
int candidate = 89 + Random.Next(12);
if (consumeCores == 0)
{
return(candidate.ToString());
}
double modifier = 1 - ((double)consumeCores / Constants.NUM_CORES);
return(((int)(candidate * modifier)).ToString());
}
/// <summary>
/// Runs a tweaker task on the given host name using the given Tweaker
/// </summary>
/// <param name="task">A TweakerTask to run</param>
/// <param name="tweaker">The Tweaker to run the task on</param>
/// <param name="hostname">The host name that will be subjected to the tweak</param>
/// <returns>Result of task, format depends on task type</returns>
internal static TaskResult RunTask(TweakerTask task, Tweaker tweaker, string hostname)
{
var taskResult = new TaskResult()
{
Task = task
};
var tweak = ValidateAndCorrectTask(task, hostname);
tweaker.Tweak(task.Mode, tweak);
string resultMessage = "Tweaker mode " + task.Mode + " applied with value " + tweak;
return(new TaskResult()
{
Messages = new List <String>()
{
resultMessage
},
Task = task
});
}
