micro.newService()中newOptions

func newOptions(opts ...Option) Options {    opt := Options{        Auth:      auth.DefaultAuth,        Broker:    broker.DefaultBroker,        Cmd:       cmd.DefaultCmd,        Config:    config.DefaultConfig,        Client:    client.DefaultClient,        Server:    server.DefaultServer,        Store:     store.DefaultStore,        Registry:  registry.DefaultRegistry,        Router:    router.DefaultRouter,        Runtime:   runtime.DefaultRuntime,        Transport: transport.DefaultTransport,        Context:   context.Background(),        Signal:    true,    }    for _, o := range opts {        o(&opt)    }    return opt}

初始化了一堆根底设置，来看看Runtime
runtime.DefaultRuntime,
在runtime/runtime.go中的
DefaultRuntime Runtime = NewRuntime()

// NewRuntime creates new local runtime and returns itfunc NewRuntime(opts ...Option) Runtime {    // get default options    options := Options{}    // apply requested options    for _, o := range opts {        o(&options)    }    // make the logs directory    path := filepath.Join(os.TempDir(), "micro", "logs")    _ = os.MkdirAll(path, 0755)    return &runtime{        options:    options,        closed:     make(chan bool),        start:      make(chan *service, 128),        namespaces: make(map[string]map[string]*service),    }}

这里做了以下事件：

  1. 初始化并设置options
  2. 创立日志目录，零碎的长期目录/micro/logs
  3. 返回runtime{}

runtime的相干介绍https://github.com/micro/docs...