func (ms *MinionServer) launchHyperkubeServer(server string, args []string, logFileName string, options ...tasks.Option) {
log.V(2).Infof("Spawning hyperkube %v with args '%+v'", server, args)
kmArgs := append([]string{server}, args...)
maxSize := ms.logMaxSize.Value()
if maxSize > 0 {
// convert to MB
maxSize = maxSize / 1024 / 1024
if maxSize == 0 {
log.Warning("maximal log file size is rounded to 1 MB")
maxSize = 1
}
}
writerFunc := func() io.WriteCloser {
return &lumberjack.Logger{
Filename: logFileName,
MaxSize: int(maxSize),
MaxBackups: ms.logMaxBackups,
MaxAge: ms.logMaxAgeInDays,
}
}
// prepend env, allow later options to customize further
options = append([]tasks.Option{tasks.Environment(os.Environ()), ms.applyPathOverride()}, options...)
t := tasks.New(server, ms.kmBinary, kmArgs, writerFunc, options...)
go t.Start()
ms.tasks = append(ms.tasks, t)
}
// applyPathOverride overrides PATH and also adds $SANDBOX/bin (needed for locating bundled binary deps
// as well as external deps like iptables)
func (ms *MinionServer) applyPathOverride() tasks.Option {
return func(t *tasks.Task) tasks.Option {
kmEnv := make([]string, 0, len(t.Env))
for _, e := range t.Env {
if !strings.HasPrefix(e, "PATH=") {
kmEnv = append(kmEnv, e)
} else {
if ms.pathOverride != "" {
e = "PATH=" + ms.pathOverride
}
pwd, err := os.Getwd()
if err != nil {
panic(fmt.Errorf("Cannot get current directory: %v", err))
}
kmEnv = append(kmEnv, fmt.Sprintf("%s:%s", e, path.Join(pwd, "bin")))
}
}
oldenv := t.Env
t.Env = kmEnv
return tasks.Environment(oldenv)
}
}