pedroMMM/goss

package system

import (
    "bufio"
    "fmt"
    "os"
    "regexp"
    "strings"

    "github.com/aelsabbahy/goss/util"
)

type ServiceUpstart struct {
    service string
}

var upstartEnabled = regexp.MustCompile(`^\s*start on`)
var upstartDisabled = regexp.MustCompile(`^manual`)

func NewServiceUpstart(service string, system *System, config util.Config) Service {
    return &ServiceUpstart{service: service}
}

func (s *ServiceUpstart) Service() string {
    return s.service
}

func (s *ServiceUpstart) Exists() (bool, error) {
    // upstart
    if _, err := os.Stat(fmt.Sprintf("/etc/init/%s.conf", s.service)); err == nil {
        return true, nil
    }
    // Fallback on sysv
    sysv := &ServiceInit{service: s.service}
    if e, err := sysv.Exists(); e && err == nil {
        return true, nil
    }
    return false, nil
}

func (s *ServiceUpstart) Enabled() (bool, error) {
    if fh, err := os.Open(fmt.Sprintf("/etc/init/%s.override", s.service)); err == nil {
        scanner := bufio.NewScanner(fh)
        for scanner.Scan() {
            line := scanner.Text()
            if upstartDisabled.MatchString(line) {
                return false, nil
            }
        }
    }

    // If no /etc/init/<service>.override with `manual` keyword in it has been found
    // Check the contents of the upstart manifest.
    if fh, err := os.Open(fmt.Sprintf("/etc/init/%s.conf", s.service)); err == nil {
        scanner := bufio.NewScanner(fh)
        for scanner.Scan() {
            line := scanner.Text()
            if upstartEnabled.MatchString(line) {
                return true, nil
            }
        }
    }
    // Fallback on sysv
    sysv := &ServiceInit{service: s.service}
    if en, err := sysv.Enabled(); en && err == nil {
        return true, nil
    }
    return false, nil
}

func (s *ServiceUpstart) Running() (bool, error) {
    cmd := util.NewCommand("service", s.service, "status")
    cmd.Run()
    out := cmd.Stdout.String()
    if cmd.Status == 0 && (strings.Contains(out, "running") || strings.Contains(out, "online")) {
        return true, cmd.Err
    }
    return false, nil
}