public LoadPrediction(byte levelCount, Dictionary <byte, int[]> values)
{
var controlers = new List <FeedbackController>();
foreach (var value in values)
{
var dict = new SortedDictionary <FeedbackLevel, FeedbackLevelData>();
var thresholds = value.Value;
for (var i = 0; i < thresholds.Length / 3; ++i)
{
var upDownValues = new FeedbackLevelData
{
UpperBound = thresholds[3 * i + 1], LowerBound = thresholds[3 * i + 2]
};
if (i == (int)FeedbackLevel.Highest)
{
upDownValues.UpperBound = int.MaxValue;
}
dict.Add((FeedbackLevel)thresholds[3 * i], upDownValues);
}
var controller = new FeedbackController((FeedbackName)value.Key, dict, 0, FeedbackLevel.Lowest);
controlers.Add(controller);
}
this.controllerCollection = new FeedbackControllerCollection(controlers.ToArray());
}
private bool UpdateLevelValues(FeedbackLevel level, int input, float factor, out FeedbackLevelData upDownValues, out FeedbackLevelData higherLevelValues, Dictionary <FeedbackLevel, FeedbackLevelData> updatedLevels)
{
higherLevelValues = new FeedbackLevelData(-1, -1);
if (!this.thresholdValues.TryGetValue(level, out upDownValues))
{
log.WarnFormat("Can not find values for level {0}", level);
return(false);
}
if (input < 0)
{
input = 0;
}
if (level == FeedbackLevel.Highest)
{
if (log.IsDebugEnabled)
{
log.Debug("We do not update upper bound for 'Highest' level");
}
//upDownValues.UpperBound = (int)(factor * (input - upDownValues.UpperBound)) + upDownValues.UpperBound;
//this.thresholdValues[level] = upDownValues;
//updatedLevels[level] = upDownValues;
return(true);
}
var nextLevel = this.GetNextExistingHigherLevel(level);
if (!this.thresholdValues.TryGetValue(nextLevel, out higherLevelValues))
{
log.WarnFormat("Can not find values for level {0}", nextLevel);
return(false);
}
var upDownDiff = upDownValues.UpperBound - higherLevelValues.LowerBound;
upDownValues.UpperBound = (int)(factor * (input - upDownValues.UpperBound)) + upDownValues.UpperBound;
higherLevelValues.LowerBound = upDownValues.UpperBound - upDownDiff;
if (higherLevelValues.LowerBound > upDownValues.UpperBound)
{
higherLevelValues.LowerBound = upDownValues.UpperBound;
}
this.thresholdValues[level] = upDownValues;
this.thresholdValues[nextLevel] = higherLevelValues;
updatedLevels[level] = upDownValues;
updatedLevels[nextLevel] = higherLevelValues;
if (log.IsDebugEnabled)
{
log.DebugFormat("Level updated. Input:{0}, level:{1}, next:{2}, {1}'s data:{3}, {2}'s data:{4}",
input, level, nextLevel, upDownValues, higherLevelValues);
}
return(true);
}
private void Initialize(string workLoadConfigFile)
{
// try to load feedback controllers from file:
string message;
LoadPredictionSystemSection section;
string filename = Path.Combine(this.rootPath, workLoadConfigFile);
if (!ConfigurationLoader.TryLoadFromFile(filename, out section, out message))
{
log.WarnFormat(
"Could not initialize Load Prediction System from configuration: Invalid configuration file {0}. Using default settings... ({1})",
filename,
message);
}
if (section != null)
{
// load controllers from config file.);
foreach (FeedbackControllerElement controllerElement in section.FeedbackControllers)
{
if (controllerElement.Name != FeedbackName.PeerCount)
{
continue;
}
var dict = new SortedDictionary <FeedbackLevel, FeedbackLevelData>();
foreach (FeedbackLevelElement level in controllerElement.Levels)
{
var values = new FeedbackLevelData
{
UpperBound = level.Value,
LowerBound = level.ValueDown == -1 ? level.Value : level.ValueDown,
};
if (level.Level == FeedbackLevel.Highest)
{
values.UpperBound = int.MaxValue;
}
dict.Add(level.Level, values);
}
this.thresholdValues = dict;
}
log.InfoFormat("Initialized Load Prediction with {0} controllers from config file.", section.FeedbackControllers.Count);
}
else
{
// default settings, in case no config file was found.
this.thresholdValues = DefaultConfiguration.GetDefaultControllers();
}
}
public void UpdatePredictionLevels(Dictionary <byte, int[]> predictionData)
{
foreach (var value in predictionData)
{
var dict = new SortedDictionary <FeedbackLevel, FeedbackLevelData>();
var thresholds = value.Value;
for (var i = 0; i < thresholds.Length / 3; ++i)
{
var upDownValues = new FeedbackLevelData
{
UpperBound = thresholds[3 * i + 1],
LowerBound = thresholds[3 * i + 2]
};
if (i == (int)FeedbackLevel.Highest)
{
upDownValues.UpperBound = int.MaxValue;
}
dict.Add((FeedbackLevel)thresholds[3 * i], upDownValues);
}
this.controllerCollection.UpdateFeedbackController((FeedbackName)value.Key, dict);
}
}
