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refactor: Move stat classes out of StatManager and into their own files for clarity.
This commit is contained in:
Justin Clark-Casey (justincc)
@@ -301,264 +301,4 @@ namespace OpenSim.Framework.Monitoring
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Debug,
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Info
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}
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/// <summary>
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/// Holds individual static details
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/// </summary>
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public class Stat
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{
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/// <summary>
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/// Category of this stat (e.g. cache, scene, etc).
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/// </summary>
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public string Category { get; private set; }
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/// <summary>
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/// Containing name for this stat.
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/// FIXME: In the case of a scene, this is currently the scene name (though this leaves
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/// us with a to-be-resolved problem of non-unique region names).
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/// </summary>
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/// <value>
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/// The container.
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/// </value>
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public string Container { get; private set; }
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public StatType StatType { get; private set; }
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public MeasuresOfInterest MeasuresOfInterest { get; private set; }
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/// <summary>
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/// Action used to update this stat when the value is requested if it's a pull type.
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/// </summary>
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public Action<Stat> PullAction { get; private set; }
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public StatVerbosity Verbosity { get; private set; }
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public string ShortName { get; private set; }
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public string Name { get; private set; }
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public string Description { get; private set; }
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public virtual string UnitName { get; private set; }
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public virtual double Value
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{
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get
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{
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// Asking for an update here means that the updater cannot access this value without infinite recursion.
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// XXX: A slightly messy but simple solution may be to flick a flag so we can tell if this is being
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// called by the pull action and just return the value.
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if (StatType == StatType.Pull)
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PullAction(this);
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return m_value;
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}
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set
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{
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m_value = value;
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}
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}
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private double m_value;
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/// <summary>
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/// Historical samples for calculating measures of interest average.
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/// </summary>
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/// <remarks>
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/// Will be null if no measures of interest require samples.
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/// </remarks>
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private static Queue<double> m_samples;
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/// <summary>
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/// Maximum number of statistical samples.
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/// </summary>
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/// <remarks>
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/// At the moment this corresponds to 1 minute since the sampling rate is every 2.5 seconds as triggered from
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/// the main Watchdog.
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/// </remarks>
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private static int m_maxSamples = 24;
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public Stat(
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string shortName,
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string name,
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string description,
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string unitName,
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string category,
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string container,
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StatType type,
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Action<Stat> pullAction,
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StatVerbosity verbosity)
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: this(
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shortName,
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name,
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description,
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unitName,
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category,
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container,
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type,
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MeasuresOfInterest.None,
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pullAction,
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verbosity)
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{
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}
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name='shortName'>Short name for the stat. Must not contain spaces. e.g. "LongFrames"</param>
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/// <param name='name'>Human readable name for the stat. e.g. "Long frames"</param>
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/// <param name='description'>Description of stat</param>
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/// <param name='unitName'>
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/// Unit name for the stat. Should be preceeded by a space if the unit name isn't normally appeneded immediately to the value.
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/// e.g. " frames"
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/// </param>
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/// <param name='category'>Category under which this stat should appear, e.g. "scene". Do not capitalize.</param>
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/// <param name='container'>Entity to which this stat relates. e.g. scene name if this is a per scene stat.</param>
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/// <param name='type'>Push or pull</param>
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/// <param name='pullAction'>Pull stats need an action to update the stat on request. Push stats should set null here.</param>
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/// <param name='moi'>Measures of interest</param>
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/// <param name='verbosity'>Verbosity of stat. Controls whether it will appear in short stat display or only full display.</param>
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public Stat(
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string shortName,
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string name,
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string description,
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string unitName,
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string category,
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string container,
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StatType type,
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MeasuresOfInterest moi,
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Action<Stat> pullAction,
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StatVerbosity verbosity)
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{
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if (StatsManager.SubCommands.Contains(category))
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throw new Exception(
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string.Format("Stat cannot be in category '{0}' since this is reserved for a subcommand", category));
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ShortName = shortName;
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Name = name;
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Description = description;
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UnitName = unitName;
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Category = category;
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Container = container;
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StatType = type;
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if (StatType == StatType.Push && pullAction != null)
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throw new Exception("A push stat cannot have a pull action");
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else
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PullAction = pullAction;
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MeasuresOfInterest = moi;
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if ((moi & MeasuresOfInterest.AverageChangeOverTime) == MeasuresOfInterest.AverageChangeOverTime)
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m_samples = new Queue<double>(m_maxSamples);
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Verbosity = verbosity;
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}
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/// <summary>
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/// Record a value in the sample set.
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/// </summary>
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/// <remarks>
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/// Do not call this if MeasuresOfInterest.None
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/// </remarks>
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public void RecordValue()
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{
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double newValue = Value;
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lock (m_samples)
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{
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if (m_samples.Count >= m_maxSamples)
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m_samples.Dequeue();
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m_samples.Enqueue(newValue);
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}
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}
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public virtual string ToConsoleString()
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{
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StringBuilder sb = new StringBuilder();
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sb.AppendFormat("{0}.{1}.{2} : {3}{4}", Category, Container, ShortName, Value, UnitName);
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AppendMeasuresOfInterest(sb);
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return sb.ToString();
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}
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protected void AppendMeasuresOfInterest(StringBuilder sb)
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{
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if ((MeasuresOfInterest & MeasuresOfInterest.AverageChangeOverTime)
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== MeasuresOfInterest.AverageChangeOverTime)
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{
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double totalChange = 0;
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double? lastSample = null;
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lock (m_samples)
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{
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foreach (double s in m_samples)
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{
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if (lastSample != null)
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totalChange += s - (double)lastSample;
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lastSample = s;
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}
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}
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int divisor = m_samples.Count <= 1 ? 1 : m_samples.Count - 1;
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sb.AppendFormat(", {0:0.##}{1}/s", totalChange / divisor / (Watchdog.WATCHDOG_INTERVAL_MS / 1000), UnitName);
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}
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}
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}
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public class PercentageStat : Stat
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{
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public long Antecedent { get; set; }
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public long Consequent { get; set; }
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public override double Value
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{
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get
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{
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// Asking for an update here means that the updater cannot access this value without infinite recursion.
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// XXX: A slightly messy but simple solution may be to flick a flag so we can tell if this is being
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// called by the pull action and just return the value.
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if (StatType == StatType.Pull)
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PullAction(this);
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long c = Consequent;
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// Avoid any chance of a multi-threaded divide-by-zero
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if (c == 0)
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return 0;
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return (double)Antecedent / c * 100;
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}
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set
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{
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throw new InvalidOperationException("Cannot set value on a PercentageStat");
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}
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}
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public PercentageStat(
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string shortName,
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string name,
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string description,
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string category,
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string container,
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StatType type,
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Action<Stat> pullAction,
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StatVerbosity verbosity)
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: base(shortName, name, description, "%", category, container, type, pullAction, verbosity) {}
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public override string ToConsoleString()
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{
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StringBuilder sb = new StringBuilder();
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sb.AppendFormat(
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"{0}.{1}.{2} : {3:0.##}{4} ({5}/{6})",
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Category, Container, ShortName, Value, UnitName, Antecedent, Consequent);
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AppendMeasuresOfInterest(sb);
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return sb.ToString();
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}
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}
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}
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