config

type Config struct {
	Env    string
	Server *HttpServer
	MySQL  *MySQL
	Reg    *Reg
	//gRPC server
	GRPCServer *grpc.ServerConfig
	Key        *Key
}

type HttpServer struct {
	Addr string
}

type Key struct {
	KeyExpireDuration time.Duration
}

type MySQL struct {
	Host string
	Port int32
	User string
	Pwd  string
	Db   string
}

type Reg struct {
	Schema   string
	SrvName  string // call
	RegAddrs string // etcd addrs, seperate by ','
}