Simple discovery app in go using consul

app.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"strconv"

	"github.com/armon/consul-api"
)

// returns ip, port, error
func getAddress(a string) (string, string, error) {
	c := consulapi.DefaultConfig()
	c.Address = "consul:8500"
	cl, e := consulapi.NewClient(c)
	if e != nil {
		return "", "", e
	}
	cs, e := cl.Agent().Services() //("app", "production", nil)
	if e != nil {
		return "", "", e
	}
	for _, ca := range cs {
		if ca.Service == a {
			log.Printf("Found %s:%s\n", ca.Service, strconv.Itoa(ca.Port))
			return ca.Service, strconv.Itoa(ca.Port), nil
		}
	}
	return "", "", fmt.Errorf("Nothing found")
}

func main() {

	//ip, p, e := getAddress("app")
	//if e != nil {
	//	log.Fatal(e)
	//}
	r, _ := http.Get("http://consul:8500/v1/catalog/service/app")
	//r, e := http.Get(fmt.Sprint("http://", ip, ":", p))
	//if e != nil {
	//	log.Fatal(e)
	//}
	defer r.Body.Close()

	b, _ := ioutil.ReadAll(r.Body)
	// catch err
	fmt.Printf("%s\n", b)
}