/// <summary>
/// Initializes a new instance of the <see cref=" Meter"/> class by using
/// the specified meter name, rate unit and clock.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="rate_unit">
/// The time unit of the meter's rate.
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
internal Meter(MetricConfig config, TimeUnit rate_unit,
MetricContext context) : base(config, context) {
const string kStatistic = "statistic";
mean_rate_ = new MeanRate(
config.WithAdditionalTag(new Tag(kStatistic, "mean_rate")), rate_unit,
context);
ewma_1_rate_ = ExponentialWeightedMovingAverage
.ForOneMinute(
config.WithAdditionalTag(new Tag(kStatistic, "ewma_m1_rate")),
rate_unit, context);
ewma_5_rate_ = ExponentialWeightedMovingAverage
.ForFiveMinutes(
config.WithAdditionalTag(new Tag(kStatistic, "ewma_m5_rate")),
rate_unit, context);
ewma_15_rate_ = ExponentialWeightedMovingAverage
.ForFifteenMinutes(
config.WithAdditionalTag(new Tag(kStatistic, "ewma_m15_rate")),
rate_unit, context);
metrics_ = new ReadOnlyCollection<IMetric>(
new IMetric[] {
mean_rate_, ewma_1_rate_, ewma_5_rate_, ewma_15_rate_
});
}
/// <summary>
/// Initializes a new instance of the <see cref="Builder"/>
/// class that creates a <see cref="BucketTimer"/> instance
/// with the configured values.
/// </summary>
/// <param name="config">
/// a <see cref="MetricConfig"/> object containing configuration
/// information about the metric to be created.
/// </param>
public Builder(MetricConfig config)
{
Config = config;
TimeUnit = TimeUnit.Milliseconds;
MeasureUnit = TimeUnit.Seconds;
Context = MetricContext.ForCurrentProcess;
Buckets = new long[0];
}
/// <summary>
/// Initializes a new instance of the <see cref="AbstractMetric"/> class
/// by using the given <paramref name="config"/> object.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
protected AbstractMetric(MetricConfig config, MetricContext context)
{
if (config == null || context == null)
{
throw new ArgumentNullException(config == null ? "config" : "context");
}
Config = config;
context_ = context;
}
/// <summary>
/// Determines whether the specified <paramref name="config"/> is equal
/// to the current <see cref="MetricConfig"/> object.
/// </summary>
/// <param name="config">
/// The <see cref="config"/> to compare with the current
/// <see cref="MetricConfig"/> object.
/// </param>
/// <returns>
/// <c>true</c> if <paramref name="config"/> and the current
/// <see cref="MetricConfig"/> object represents the same object;
/// ohtherwise, <c>false</c>.
/// </returns>
public bool Equals(MetricConfig config)
{
if ((object)config == null)
{
return(false);
}
return((config.Name == Name) && config.Tags.EqualsTo(Tags));
}
CallableGaugeWrapper PercentileGauge(MetricConfig config, double percentile)
{
// We need to divide the percentile to 100 because the percentiles from
// the SnapshotConfig is in range 0 to 100 and the Snapshot.Quantile
// methof computes percentiles in range 0.0 to 1.0.
return
(new CallableGaugeWrapper(
config.WithAdditionalTag("statistic",
"percentile_" + (percentile).ToString("#0.####")),
snapshot => snapshot.Quantile(percentile / 100)));
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>, initial value and
/// <see cref="MetricContext"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="initial">
/// The initial value of the counter.
/// </param>
/// <param name="unit">
/// The unit to be used to report the computed rate.
/// </param>
/// <param name="context">
/// The <see cref="MetricContext"/> to be used by the counter.
/// </param>
public StepCounter(MetricConfig config, long initial, TimeUnit unit,
MetricContext context)
: base(
config
.WithAdditionalTag(MetricType.Normalized.AsTag())
.WithAdditionalTag("unit", unit.Name()), context)
{
prev_count_ = initial;
curr_count_ = initial;
prev_tick_ = curr_tick_ = context.Tick;
unit_ = unit;
}
/// <summary>
/// Initializes a new instance of the
/// <see cref="ExponentialWeightedMovingAverage"/> class by using the
/// specified smoothing constant, expected tick interval and time unit of
/// the tick interval.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="alpha">
/// The smoothing constant.
/// </param>
/// <param name="interval">
/// The expected tick interval.
/// </param>
/// <param name="unit">
/// The time unit that should be used to compute the rate.
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
public ExponentialWeightedMovingAverage(MetricConfig config, double alpha,
TimeSpan interval, TimeUnit unit, MetricContext context)
: base(config.WithAdditionalTag(MetricType.EWMA.AsTag()), context)
{
interval_ = interval.Ticks;
alpha_ = alpha;
ticks_per_unit_ = 1.ToTicks(unit);
uncounted_ = 0;
rate_ = 0.0;
last_tick_ = context_.Tick;
initialized_ = false;
}
/// <summary>
/// Initializes a new instance of the <see cref="Histogram"/> by using the
/// given <see cref="IResevoir"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="stats">
/// A <see cref="SnapshotConfig"/> that defines the statistics that should
/// be computed.
/// </param>
/// <param name="resevoir">
/// A <see cref="IResevoir"/> that can be used to store the computed
/// values.
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
public Histogram(MetricConfig config, SnapshotConfig stats,
IResevoir resevoir, MetricContext context)
: base(config, context)
{
resevoir_ = resevoir;
gauges_ = new List <CallableGaugeWrapper>();
if (stats.ComputeCount)
{
gauges_.Add(CountGauge(config));
}
if (stats.ComputeMax)
{
gauges_.Add(MaxGauge(config));
}
if (stats.ComputeMean)
{
gauges_.Add(MeanGauge(config));
}
if (stats.ComputeMedian)
{
gauges_.Add(MedianGauge(config));
}
if (stats.ComputeMin)
{
gauges_.Add(MinGauge(config));
}
if (stats.ComputeStdDev)
{
gauges_.Add(StdDevGauge(config));
}
foreach (var percentile in stats.Percentiles)
{
gauges_.Add(PercentileGauge(config, percentile));
}
}
public Timer(MetricConfig config, TimeUnit unit, MetricContext context)
: base(config, context)
{
unit_ = unit;
MetricConfig cfg = config.WithAdditionalTag("unit", unit.Name());
count_ = new Counter(cfg.WithAdditionalTag(kStatistic, kCount), context);
max_ = new StepMaxGauge(cfg.WithAdditionalTag(kStatistic, kMax));
min_ = new StepMinGauge(cfg.WithAdditionalTag(kStatistic, kMin));
total_time_ =
new Counter(cfg.WithAdditionalTag(kStatistic, kTotal), context);
metrics_ = new ReadOnlyCollection <IMetric>(
new IMetric[] {
count_,
new MeasureTransformer(max_, ConvertToUnit),
new MeasureTransformer(min_, ConvertToUnit),
new MeasureTransformer(total_time_, ConvertToUnit)
});
}
/// <summary>
/// Initializes a new instance of the <see cref="Func{T}"/>
/// by using the specified <see cref="Func{T}"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="callable">
/// A <see cref="Func{T}"/> that is used to compute the gauge
/// values.
/// </param>
public CallableGauge(MetricConfig config, Func <Measure> callable)
: base(config)
{
callable_ = callable;
}
/// <summary>
/// Initializes a new instance of the <see cref="MaxGauge"/> class
/// by using the given <paramref name="config"/> object.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
public MaxGauge(MetricConfig config)
: base(config.WithAdditionalTag(MetricType.Gauge.AsTag()))
{
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/> and
/// <see cref="MetricContext"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="context">
/// The <see cref="MetricContext"/> to be used by the counter.
/// </param>
public StepCounter(MetricConfig config, MetricContext context)
: this(config, TimeUnit.Seconds, context)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>.
/// </summary>
/// <param name="unit">
/// The unit to be used to report the computed rate.
/// </param>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
public StepCounter(MetricConfig config, TimeUnit unit)
: this(config, 0, unit) {
}
/// <summary>
/// Initializes a new instance of the
/// <see cref="ExponentialWeightedMovingAverage"/> class by using the
/// given smoothing constant, a 5 seconds tick interval and and seconds as
/// the time unit.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="alpha">
/// The smoothing constant.
/// </param>
public ExponentialWeightedMovingAverage(MetricConfig config, double alpha)
: this(config, alpha, TimeSpan.FromSeconds(kFiveSecondsInterval),
TimeUnit.Seconds)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Counter"/> class that
/// uses the specified executor to perform the counter updates (
/// increment/decrement).
/// </summary>
public Counter(MetricConfig config) : this(config, 0) {
}
CallableGaugeWrapper StdDevGauge(MetricConfig config) {
return
new CallableGaugeWrapper(
config.WithAdditionalTag("statistic", "stddev"),
snapshot => snapshot.StdDev);
}
CallableGaugeWrapper PercentileGauge(MetricConfig config, double percentile) {
// We need to divide the percentile to 100 because the percentiles from
// the SnapshotConfig is in range 0 to 100 and the Snapshot.Quantile
// methof computes percentiles in range 0.0 to 1.0.
return
new CallableGaugeWrapper(
config.WithAdditionalTag("statistic",
"percentile_" + (percentile).ToString("#0.####")),
snapshot => snapshot.Quantile(percentile/100));
}
CallableGaugeWrapper MaxGauge(MetricConfig config) {
return
new CallableGaugeWrapper(
config.WithAdditionalTag("statistic", "max"),
snapshot => snapshot.Max);
}
CallableGaugeWrapper CountGauge(MetricConfig config) {
return
new CallableGaugeWrapper(
config.WithAdditionalTag("statistic", "count"),
snapshot => snapshot.Size);
}
public CallableGaugeWrapper(MetricConfig config,
Func<Snapshot, double> callable) {
config_ = config;
callable_ = callable;
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>, initial value and
/// <see cref="MetricContext"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="initial">
/// The initial value of the counter.
/// </param>
/// <param name="unit">
/// The unit to be used to report the computed rate.
/// </param>
/// <param name="context">
/// The <see cref="MetricContext"/> to be used by the counter.
/// </param>
public StepCounter(MetricConfig config, long initial, TimeUnit unit,
MetricContext context)
: base(
config
.WithAdditionalTag(MetricType.Normalized.AsTag())
.WithAdditionalTag("unit", unit.Name()), context) {
prev_count_ = initial;
curr_count_ = initial;
prev_tick_ = curr_tick_ = context.Tick;
unit_ = unit;
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/> and
/// <see cref="MetricContext"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="context">
/// The <see cref="MetricContext"/> to be used by the counter.
/// </param>
public StepCounter(MetricConfig config, MetricContext context)
: this(config, TimeUnit.Seconds, context) {
}
/// <summary>
/// Initializes a new instance of the <see cref="BasicCompositeMetric"/> by
/// using the given list of sub-metrics.
/// </summary>
/// <param name="metrics">
/// </param>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
public BasicCompositeMetric(MetricConfig config,
IEnumerable <IMetric> metrics)
: this(config, metrics, MetricContext.ForCurrentProcess)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Histogram"/> that uses
/// the <see cref="ExponentiallyDecayingResevoir"/> as resevoir.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="stats">
/// A <see cref="SnapshotConfig"/> that defines the statistics that should
/// be computed.
/// </param>
public Histogram(MetricConfig config, SnapshotConfig stats)
: this(config, stats, new ExponentiallyDecayingResevoir(),
MetricContext.ForCurrentProcess) {
}
/// <summary>
/// Initializes a new instance of the <see cref="BasicCompositeMetric"/> by
/// using the given list of sub-metrics.
/// </summary>
/// <param name="metrics">
/// </param>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
public BasicCompositeMetric(MetricConfig config,
IEnumerable<IMetric> metrics)
: this(config, metrics, MetricContext.ForCurrentProcess) {
}
/// <summary>
/// Initializes a new instance of the <see cref="Histogram"/> by using the
/// given <see cref="IResevoir"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="stats">
/// A <see cref="SnapshotConfig"/> that defines the statistics that should
/// be computed.
/// </param>
/// <param name="resevoir">
/// A <see cref="IResevoir"/> that can be used to store the computed
/// values.
/// </param>
public Histogram(MetricConfig config, SnapshotConfig stats,
IResevoir resevoir)
: this(config, stats, resevoir, MetricContext.ForCurrentProcess) {
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>,
/// <see cref="MetricContext"/> and <paramref name="initial"/> value.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="unit">
/// The unit to be used to report the computed rate.
/// </param>
/// <param name="initial">
/// The initial value of the counter.
/// </param>
public StepCounter(MetricConfig config, long initial, TimeUnit unit)
: this(config, initial, unit, MetricContext.ForCurrentProcess) {
}
/// <summary>
/// Initializes a new instance of the <see cref="Histogram"/> by using the
/// given <see cref="IResevoir"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="stats">
/// A <see cref="SnapshotConfig"/> that defines the statistics that should
/// be computed.
/// </param>
/// <param name="resevoir">
/// A <see cref="IResevoir"/> that can be used to store the computed
/// values.
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
public Histogram(MetricConfig config, SnapshotConfig stats,
IResevoir resevoir, MetricContext context)
: base(config, context) {
resevoir_ = resevoir;
gauges_ = new List<CallableGaugeWrapper>();
if (stats.ComputeCount) {
gauges_.Add(CountGauge(config));
}
if (stats.ComputeMax) {
gauges_.Add(MaxGauge(config));
}
if (stats.ComputeMean) {
gauges_.Add(MeanGauge(config));
}
if (stats.ComputeMedian) {
gauges_.Add(MedianGauge(config));
}
if (stats.ComputeMin) {
gauges_.Add(MinGauge(config));
}
if (stats.ComputeStdDev) {
gauges_.Add(StdDevGauge(config));
}
foreach (var percentile in stats.Percentiles) {
gauges_.Add(PercentileGauge(config, percentile));
}
}
/// <summary>
/// Initializes a new instance of the
/// <see cref="ExponentialWeightedMovingAverage"/> class by using the
/// specified smoothing constant, expected tick interval and time unit of
/// the tick interval.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="alpha">
/// The smoothing constant.
/// </param>
/// <param name="interval">
/// The expected tick interval.
/// </param>
/// <param name="unit">
/// The time unit that should be used to compute the rate.
/// </param>
public ExponentialWeightedMovingAverage(MetricConfig config, double alpha,
TimeSpan interval, TimeUnit unit)
: this(config, alpha, interval, unit, MetricContext.ForCurrentProcess)
{
}
/// <summary>
/// Determines whether the specified <paramref name="config"/> is equal
/// to the current <see cref="MetricConfig"/> object.
/// </summary>
/// <param name="config">
/// The <see cref="config"/> to compare with the current
/// <see cref="MetricConfig"/> object.
/// </param>
/// <returns>
/// <c>true</c> if <paramref name="config"/> and the current
/// <see cref="MetricConfig"/> object represents the same object;
/// ohtherwise, <c>false</c>.
/// </returns>
public bool Equals(MetricConfig config) {
if ((object) config == null) {
return false;
}
return (config.Name == Name) && config.Tags.EqualsTo(Tags);
}
/// <summary>
/// Initializes a new instance of the <see cref="Measure"/> by using
/// the given measured value.
/// </summary>
/// <param name="value">
/// The measured value.
/// </param>
/// <param name="config">
/// The <see cref="MetricConfig"/> object that has produced the measure.
/// </param>
/// <param name="observable">
/// A value that indicates if the measure shoud be dispatched to a
/// <see cref="IMeasureObserver"/>.
/// </param>
public Measure(MetricConfig config, double value, bool observable = true)
{
MetricConfig = config;
Value = value;
IsObservable = observable;
}
/// <summary>
/// Initializes a new instance of the <see cref=" MeanRate"/> class by
/// using the specified config, rate unit and <see cref="StopwatchClock"/>
/// as the clock.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="rate_unit">
/// The time unit of the meter's rate.
/// </param>
public MeanRate(MetricConfig config, TimeUnit rate_unit)
: this(config, rate_unit, MetricContext.ForCurrentProcess) {
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>,
/// <see cref="MetricContext"/> and <paramref name="initial"/> value.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="unit">
/// The unit to be used to report the computed rate.
/// </param>
/// <param name="initial">
/// The initial value of the counter.
/// </param>
public StepCounter(MetricConfig config, long initial, TimeUnit unit)
: this(config, initial, unit, MetricContext.ForCurrentProcess)
{
}
/// <summary>
/// Initializes a new instance of the <see cref=" MeanRate"/> class by using
/// the specified meter name, rate unit and clock.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="unit">
/// The time unit of the meter's rate.
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
public MeanRate(MetricConfig config, TimeUnit unit,
MetricContext context) : base(config, context) {
start_time_ = context_.Tick;
count_ = new Counter(config, 0, context);
ticks_per_unit_ = 1.ToTicks(unit);
}
/// <summary>
/// Initializes a new instance of the <see cref=" Meter"/> class by using
/// the specified config and rate unit.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="rate_unit">
/// The time unit of the meter's rate.
/// </param>
public Meter(MetricConfig config, TimeUnit rate_unit)
: this(config, rate_unit, MetricContext.ForCurrentProcess)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Measure"/> by using
/// the given measured value.
/// </summary>
/// <param name="value">
/// The measured value.
/// </param>
/// <param name="config">
/// The <see cref="MetricConfig"/> object that has produced the measure.
/// </param>
/// <param name="observable">
/// A value that indicates if the measure shoud be dispatched to a
/// <see cref="IMeasureObserver"/>.
/// </param>
public Measure(MetricConfig config, double value, bool observable = true) {
MetricConfig = config;
Value = value;
IsObservable = observable;
}
/// <summary>
/// Initializes a new instance of the <see cref="Func{T}"/>
/// by using the specified <see cref="Func{T}"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
protected CallableGauge(MetricConfig config) : base(config)
{
callable_ = () => { throw new NotImplementedException(); };
}
/// <summary>
/// Initializes a new instance of the <see cref="Histogram"/> that uses
/// the <see cref="ExponentiallyDecayingResevoir"/> as resevoir.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="stats">
/// A <see cref="SnapshotConfig"/> that defines the statistics that should
/// be computed.
/// </param>
public Histogram(MetricConfig config, SnapshotConfig stats)
: this(config, stats, new ExponentiallyDecayingResevoir(),
MetricContext.ForCurrentProcess)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Func{T}"/>
/// by using the specified <see cref="Func{T}"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="callable">
/// A <see cref="Func{T}"/> that is used to compute the gauge
/// values.
/// </param>
public CallableGauge(MetricConfig config, Func <double> callable)
: base(config)
{
callable_ = () => CreateMeasure(callable());
}
/// <summary>
/// Initializes a new instance of the <see cref="Histogram"/> by using the
/// given <see cref="IResevoir"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="stats">
/// A <see cref="SnapshotConfig"/> that defines the statistics that should
/// be computed.
/// </param>
/// <param name="resevoir">
/// A <see cref="IResevoir"/> that can be used to store the computed
/// values.
/// </param>
public Histogram(MetricConfig config, SnapshotConfig stats,
IResevoir resevoir)
: this(config, stats, resevoir, MetricContext.ForCurrentProcess)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="BasicCompositeMetric"/> by
/// using the given list of sub-metrics.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="metrics">
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
public BasicCompositeMetric(MetricConfig config,
IEnumerable <IMetric> metrics, MetricContext context)
: base(config, context)
{
Metrics = new ReadOnlyCollection <IMetric>(metrics.ToArray());
}
/// <summary>
/// Initializes a new instance of the <see cref="Counter"/> class that
/// uses the specified executor to perform the counter updates (
/// increment/decrement).
/// </summary>
public Counter(MetricConfig config, long initial)
: this(config, initial, MetricContext.ForCurrentProcess) {
}
/// <summary>
/// Initializes a new instance of the <see cref="BasicCompositeMetric"/> by
/// using the given list of sub-metrics.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="metrics">
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
public BasicCompositeMetric(MetricConfig config,
IEnumerable<IMetric> metrics, MetricContext context)
: base(config, context) {
Metrics = new ReadOnlyCollection<IMetric>(metrics.ToArray());
}
/// <summary>
/// Initializes a new instance of the <see cref="Timer"/> class by using
/// the given configuration.
/// </summary>
/// <param name="config">
/// </param>
public Timer(MetricConfig config) : this(config, TimeUnit.Milliseconds)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Counter"/> class.
/// </summary>
/// <param name="config"></param>
/// <param name="context"></param>
public Counter(MetricConfig config, MetricContext context)
: this(config, 0, context) {
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>,
/// <see cref="MetricContext"/> and <paramref name="initial"/> value.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="initial">
/// The initial value of the counter.
/// </param>
public StepCounter(MetricConfig config, long initial)
: this(config, initial, TimeUnit.Seconds) {
}
/// <summary>
/// Initializes a new instance of the <see cref="Counter"/> class that
/// uses the specified executor to perform the counter updates (
/// increment/decrement).
/// </summary>
public Counter(MetricConfig config, long initial, MetricContext context)
: base(config.WithAdditionalTag(MetricType.Counter.AsTag()), context) {
count_ = initial;
}
/// <summary>
/// Initializes a new instance of the <see cref="AbstractMetric"/> class
/// by using the given <paramref name="config"/> object.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
protected AbstractMetric(MetricConfig config)
: this(config, MetricContext.ForCurrentProcess)
{
}
public Timer(MetricConfig config, TimeUnit unit)
: this(config, unit, MetricContext.ForCurrentProcess)
{
}
/// <summary>
/// Initializes a new instance of the
/// <see cref="ExponentialWeightedMovingAverage"/> class by using the
/// given smoothing constant, a 5 seconds tick interval and and seconds as
/// the time unit.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="alpha">
/// The smoothing constant.
/// </param>
public ExponentialWeightedMovingAverage(MetricConfig config, double alpha)
: this(config, alpha, TimeSpan.FromSeconds(kFiveSecondsInterval),
TimeUnit.Seconds) {
}
/// <summary>
/// Initializes a new instance of the
/// <see cref="ExponentialWeightedMovingAverage"/> class by using the
/// given smoothing constant, expected tick interval and seconds as the
/// time unit.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="alpha">
/// The smoothing constant.
/// </param>
/// <param name="interval">
/// The expected tick interval.
/// </param>
public ExponentialWeightedMovingAverage(MetricConfig config, double alpha,
TimeSpan interval) : this(config, alpha, interval, TimeUnit.Seconds)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Func{T}"/>
/// by using the specified <see cref="Func{T}"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="callable">
/// A <see cref="Func{T}"/> that is used to compute the gauge
/// values.
/// </param>
public CallableGauge(MetricConfig config, Func<Measure> callable)
: base(config) {
callable_ = callable;
}
/// <summary>
/// Initializes a new instance of the
/// <see cref="ExponentialWeightedMovingAverage"/> class by using the
/// specified smoothing constant, expected tick interval and time unit of
/// the tick interval.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="alpha">
/// The smoothing constant.
/// </param>
/// <param name="interval">
/// The expected tick interval.
/// </param>
/// <param name="unit">
/// The time unit that should be used to compute the rate.
/// </param>
/// <param name="context">
/// A <see cref="MetricContext"/> that contains the shared
/// <see cref="Mailbox{T}"/> and <see cref="Clock"/>.
/// </param>
public ExponentialWeightedMovingAverage(MetricConfig config, double alpha,
TimeSpan interval, TimeUnit unit, MetricContext context)
: base(config.WithAdditionalTag(MetricType.EWMA.AsTag()), context) {
interval_ = interval.Ticks;
alpha_ = alpha;
ticks_per_unit_ = 1.ToTicks(unit);
uncounted_ = 0;
rate_ = 0.0;
last_tick_ = context_.Tick;
initialized_ = false;
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>.
/// </summary>
/// <param name="unit">
/// The unit to be used to report the computed rate.
/// </param>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
public StepCounter(MetricConfig config, TimeUnit unit)
: this(config, 0, unit)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="StepMaxGauge"/>
/// class by using the given <see cref="MetricConfig"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that shoud be used by the <see cref="StepMaxGauge"/> object.
/// </param>
public StepMaxGauge(MetricConfig config)
{
max_gauge_ = new MaxGauge(config);
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>,
/// <see cref="MetricContext"/> and <paramref name="initial"/> value.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
/// <param name="initial">
/// The initial value of the counter.
/// </param>
public StepCounter(MetricConfig config, long initial)
: this(config, initial, TimeUnit.Seconds)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Func{T}"/>
/// by using the specified <see cref="Func{T}"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
protected CallableGauge(MetricConfig config) : base(config) {
callable_ = () => { throw new NotImplementedException(); };
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
public StepCounter(MetricConfig config)
: this(config, TimeUnit.Seconds) {
}
/// <summary>
/// Initializes a new instance of the <see cref="Func{T}"/>
/// by using the specified <see cref="Func{T}"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> containing the configuration settings
/// for the metric.
/// </param>
/// <param name="callable">
/// A <see cref="Func{T}"/> that is used to compute the gauge
/// values.
/// </param>
public CallableGauge(MetricConfig config, Func<double> callable)
: base(config) {
callable_ = () => CreateMeasure(callable());
}
/// <summary>
/// Initializes a new instance of the <see cref="StepCounter"/> class
/// by using the given <see cref="MetricConfig"/>.
/// </summary>
/// <param name="config">
/// A <see cref="MetricConfig"/> object containing the configuration
/// that should be used by the <see cref="StepCounter"/> object.
/// </param>
public StepCounter(MetricConfig config)
: this(config, TimeUnit.Seconds)
{
}