func watch(args []string, service *update.Service, out *tabwriter.Writer) int {
tick := time.NewTicker(time.Second * time.Duration(watchFlags.interval))
server := globalFlags.Server
debug := globalFlags.Debug
version := watchFlags.version
if watchFlags.appId.Get() == nil || watchFlags.groupId.Get() == nil {
return ERROR_USAGE
}
if len(args) == 0 {
return ERROR_USAGE
}
appId := watchFlags.appId.String()
groupId := watchFlags.groupId.String()
clientId := watchFlags.clientId
if clientId == "" {
clientId = uuid.New()
}
// initial check
updateCheck, err := fetchUpdateCheck(server, appId, groupId, clientId, version, debug)
if err != nil {
fmt.Fprintf(os.Stderr, err.Error())
os.Exit(1)
}
runCmd(args[0], args[1:], appId, version, "", updateCheck)
for {
select {
case <-tick.C:
updateCheck, err := fetchUpdateCheck(server, appId, groupId, clientId, version, debug)
if err != nil {
log.Printf("warning: update check failed (%v)\n", err)
continue
}
if updateCheck.Status == "noupdate" {
continue
} else if updateCheck.Status == "error-version" {
continue
}
newVersion := updateCheck.Manifest.Version
if newVersion != version {
runCmd(args[0], args[1:], appId, newVersion, version, updateCheck)
}
version = newVersion
}
}
tick.Stop()
return OK
}
func fetchUpdateCheck(server string, appID string, groupID string, clientID string, version string, debug bool) (*omaha.UpdateCheck, error) {
client := &http.Client{}
// TODO: Fill out the OS field correctly based on /etc/os-release
request := omaha.NewRequest("lsb", "CoreOS", "", "")
app := request.AddApp(fmt.Sprintf("{%s}", appID), version)
app.AddUpdateCheck()
app.MachineID = clientID
app.BootId = uuid.New()
app.Track = groupID
event := app.AddEvent()
event.Type = "1"
event.Result = "0"
raw, err := xml.MarshalIndent(request, "", " ")
if err != nil {
fmt.Fprintln(os.Stderr, err)
return nil, err
}
if debug {
fmt.Fprintf(os.Stderr, "Request: %s%s\n", xml.Header, raw)
}
resp, err := client.Post(server+"/v1/update/", "text/xml", bytes.NewReader(raw))
if err != nil {
fmt.Fprintln(os.Stderr, err)
return nil, err
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Fprintln(os.Stderr, err)
return nil, err
}
if debug {
fmt.Fprintf(os.Stderr, "Response: %s%s\n", xml.Header, string(body))
}
oresp := &omaha.Response{}
err = xml.Unmarshal(body, oresp)
if err != nil {
fmt.Fprintln(os.Stderr, err)
return nil, err
}
return oresp.Apps[0].UpdateCheck, nil
}
func appCreate(args []string, service *update.Service, out *tabwriter.Writer) int {
if appFlags.appId.Get() == nil {
appFlags.appId.Set(uuid.New())
}
return updateAppHelper(service, out)
}