"fmt"
	"sync"
	"sync/atomic"
	"time"

	"github.com/rcrowley/go-metrics"
)

//go:generate msgp -file $GOFILE

const (
	// beta is the weight used to calculate exponential moving average
	beta = 0.1 // Number of averages considered = 1/(1-beta)
)

// rateMeasurement captures the transfer details for one bucket/target
//msgp:ignore rateMeasurement

type rateMeasurement struct {
	lock                 sync.Mutex

	sync.RWMutex                 // mutex for Cache
	mostRecentStatsMu sync.Mutex // mutex for mostRecentStats

	wlock sync.RWMutex // mutex for active workers

	movingAvgTicker *time.Ticker // Ticker for calculating moving averages
	wTimer          *time.Ticker // ticker for calculating active workers
	qTimer          *time.Ticker // ticker for calculating queue stats
}

func (r *ReplicationStats) trackEWMA() {
	for {
		select {

	// This works out to an average length 2×½ + 3×¼ + 4×⅛ + ... = 3.
	// The space we need is further reduced by the fact that many of the
	// short patterns like SLS will often be the same character sequences
	// repeated throughout the text, reducing maxID relative to numLMS.
	//
	// For short inputs, the averages may not run in our favor, but then we

  // averageValue is the current value of the average of the
  // metric across all relevant pods (as a quantity)
  // +optional
  optional k8s.io.apimachinery.pkg.api.resource.Quantity averageValue = 5;
}

// PodsMetricSource indicates how to scale on a metric describing each pod in
// the current scale target (for example, transactions-processed-per-second).
// The values will be averaged together before being compared to the target

	"metricName":         "metricName is the name of the metric in question",
	"targetAverageValue": "targetAverageValue is the target value of the average of the metric across all relevant pods (as a quantity)",

	"metricName":         "metricName is the name of the metric in question",
	"targetAverageValue": "targetAverageValue is the target value of the average of the metric across all relevant pods (as a quantity)",

  // averageValue is the current value of the average of the
  // metric across all relevant pods (as a quantity)
  // +optional
  optional .k8s.io.apimachinery.pkg.api.resource.Quantity averageValue = 5;
}

// PodsMetricSource indicates how to scale on a metric describing each pod in
// the current scale target (for example, transactions-processed-per-second).
// The values will be averaged together before being compared to the target

  // averageValue is the current value of the average of the
  // metric across all relevant pods (as a quantity)
  // +optional
  optional .k8s.io.apimachinery.pkg.api.resource.Quantity averageValue = 5;
}

// PodsMetricSource indicates how to scale on a metric describing each pod in
// the current scale target (for example, transactions-processed-per-second).
// The values will be averaged together before being compared to the target

  // averageValue is the current value of the average of the
  // metric across all relevant pods (as a quantity)
  // +optional
  optional k8s.io.apimachinery.pkg.api.resource.Quantity averageValue = 5;
}

// PodsMetricSource indicates how to scale on a metric describing each pod in
// the current scale target (for example, transactions-processed-per-second).
// The values will be averaged together before being compared to the target

// The values will be averaged together before being compared to the target
// value.
type PodsMetricSource struct {
	// metricName is the name of the metric in question
	MetricName string `json:"metricName" protobuf:"bytes,1,name=metricName"`
	// targetAverageValue is the target value of the average of the
	// metric across all relevant pods (as a quantity)