StatusApp/check/check.go

package check

import (
	"encoding/json"
	"time"
)

//Result denotes the status from a status check.
type Result uint8

const (
	//Online means all requests were fulfilled by the remote end.
	Online Result = iota
	//Unstable means some requests were fulfilled by the remote end.
	Unstable
	//Offline means every requests to the remote end has failed.
	Offline
)

//TryCount is the amount of times requests will be made to the remote end.
const TryCount = 3

func statusFromSuccessCount(count int) Result {
	if count == 0 {
		return Offline
	}
	if count < TryCount {
		return Unstable
	}
	return Online
}

func divide(t time.Duration, dividend int) time.Duration {
	return time.Duration(int(t) / dividend)
}

func (r Result) String() string {
	switch r {
	case Online:
		return "online"
	case Unstable:
		return "unstable"
	case Offline:
		return "offline"
	}
	panic("Unexpected value")
}

func (r Result) MarshalJSON() ([]byte, error) {
	return json.Marshal(r.String())
}