go-micro源码阅读笔记1

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本节主要是针对与go-micro服务注册的过程中源码阅读的分享,

  s := micro.NewService(
        micro.Name("go.micro.srv.user"),
        micro.Version("latest"),
    )
    s.Init()

这里做了很多事
    func newOptions(opts ...Option) Options {
    opt := Options{
        Broker:    broker.DefaultBroker,
        Cmd:       cmd.DefaultCmd,
        Client:    client.DefaultClient,
        Server:    server.DefaultServer,
        Registry:  registry.DefaultRegistry,
        Transport: transport.DefaultTransport,
        Context:   context.Background(),
    }
  }

这块初始化Options结构体,如果想要修改consul默认的注册地址,必须要修改NewRegistry函数,里面赋值

type Options struct {
    Addrs     []string //注册ip地址:192.168.1.2:8080
    Timeout   time.Duration
    Secure    bool
    TLSConfig *tls.Config

    // Other options for implementations of the interface
    // can be stored in a context
    Context context.Context
}

//这里是获取默认的配置
func configure(c *consulRegistry, opts ...Option) {
    // set opts
    for _, o := range opts {
        o(&c.opts)
    }

    // use default config
    config := consul.DefaultConfig()

//consul默认配置
func defaultConfig(transportFn func() *http.Transport) *Config {
    config := &Config{
        Address:   "127.0.0.1:8500",
        Scheme:    "http",
        Transport: transportFn(),
    }

    if addr := os.Getenv(HTTPAddrEnvName); addr != "" {
        config.Address = addr
    }

    if token := os.Getenv(HTTPTokenEnvName); token != "" {
        config.Token = token
    }

    if auth := os.Getenv(HTTPAuthEnvName); auth != "" {
        var username, password string
        if strings.Contains(auth, ":") {
            split := strings.SplitN(auth, ":", 2)
            username = split[0]
            password = split[1]
        } else {
            username = auth
        }

好了,下节继续分享其他部分


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