up

package
Version: v1.3.1 Latest Latest
Warning

This package is not in the latest version of its module.

Go to latest
Published: Jan 13, 2019 License: Apache-2.0 Imports: 2 Imported by: 0

Documentation

Overview

Package up is used to run a function for some duration. If a new function is added while a previous run is still ongoing, nothing new will be executed.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Func

type Func func() error

Func is used to determine if a target is alive. If so this function must return nil.

type Probe

type Probe struct {
	sync.Mutex
	// contains filtered or unexported fields
}

Probe is used to run a single Func until it returns true (indicating a target is healthy). If an Func is already in progress no new one will be added, i.e. there is always a maximum of 1 checks in flight. When failures start to happen we will back off every second failure up to maximum of 4 intervals.

func New

func New() *Probe

New returns a pointer to an initialized Probe.

func (*Probe) Do

func (p *Probe) Do(f Func)

Do will probe target, if a probe is already in progress this is a noop.

func (*Probe) Start

func (p *Probe) Start(interval time.Duration)

Start will initialize the probe manager, after which probes can be initiated with Do.

func (*Probe) Stop

func (p *Probe) Stop()

Stop stops the probing.

Source Files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL