accrual

package module

v0.0.0-...-2ade2d3 Latest Latest Go to latest Published: Mar 28, 2016 License: MIT Imports: 4 Imported by: 0

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Package accrual is an implementation of the φ Accrual Failure Detector. For details see: https://dspace.jaist.ac.jp/dspace/bitstream/10119/4784/1/IS-RR-2004-010.pdf

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type Detector struct {
	// contains filtered or unexported fields
}

Detector represents a φ-failure detector.

Example ¶

w := NewMemoryWindow(10)
d := NewDetector(1, w)
d.Heartbeat()
if d.Failed() {
	fmt.Println("Failure dectected")
}

Output:

func NewDetector(threshold float64, w Window) *Detector

NewDetector creates a new detector with the given threshold and a window.

func (d *Detector) Failed() bool

Failed returns if there is a potential failure.

func (d *Detector) Heartbeat()

Heartbeat records a heartbeat.

type Window interface {
	Record()
	Last() time.Time
	Distribution() []int64
}

Window is the interface that wraps interval storages.

func NewMemoryWindow(size int) Window

NewMemoryWindow creates a new in-memory window.