status/services/check_ping.go

package services

import (
	"encoding/json"
	"os/exec"
)

func Ping(msg json.RawMessage) (Check, error) {
	var config struct {
		Address string `json:"address"`
	}
	err := json.Unmarshal(msg, &config)
	if err != nil {
		return nil, err
	}

	check := func() Status {
		cmd := exec.Command("ping", "-c 4", config.Address)

		err := cmd.Run()
		if _, ok := err.(*exec.ExitError); ok {
			return StatusDown
		}
		if err != nil {
			return StatusUnknown
		}

		return StatusUp
	}
	return check, nil
}