State

Example:state

state is another meta data. If you set state=inactive metadata for some services, only clients can not access those services even if those services are alive.

You can use it to disable a service temporally and don't shutdown the server.

You can manage rpcx service via rpcx-ui).

```go server.go

func main() { flag.Parse()

  1. go createServer1(*addr1, "")
  2. go createServer2(*addr2, "state=inactive")
  4. select {}

}

func createServer1(addr, meta string) { s := server.NewServer() s.RegisterName("Arith", new(example.Arith), meta) s.Serve("tcp", addr)}

func createServer2(addr, meta string) { s := server.NewServer() s.RegisterName("Arith", new(Arith), meta) s.Serve("tcp", addr)}

  3. ```go client.go
  4.     xclient := client.NewXClient("Arith", client.Failover, client.RoundRobin, d, client.DefaultOption)
  5.     defer xclient.Close()
  7.     args := &example.Args{
  8.         A: 10,
  9.         B: 20,
  10.     }
  12.     for {
  13.         reply := &example.Reply{}
  14.         err := xclient.Call(context.Background(), "Mul", args, reply)
  15.         if err != nil {
  16.             log.Fatalf("failed to call: %v", err)
  17.         }
  19.         log.Printf("%d * %d = %d", args.A, args.B, reply.C)
  20.         time.Sleep(1e9)
  21.     }

By smallnest updated 2018-12-04 11:47:26