quick hack for finding libnetwork container endpoints by container

lntool.go

package main

import (
	"encoding/base64"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
	"os"
	"text/tabwriter"
)

type ConsulKV struct {
	CreateIndex int
	ModifyIndex int
	LockIndex   int
	Flags       int
	Key         string
	Value       string
}

func main() {
	keys, err := fetch("http://consul:8500/v1/kv/docker/libnetwork/endpoint/52c322c633dd216209922cfa3b2114d628e066444d5e9f5cdd49784c0fd046c9/?recurse")
	if err != nil {
		panic(err)
	}

	w := new(tabwriter.Writer)
	w.Init(os.Stdout, 0, 8, 0, '\t', 0)

	for i := range keys {
		value, err := base64.StdEncoding.DecodeString(keys[i].Value)
		if err != nil {
			panic(err)
		}

		var valueData map[string]interface{}
		json.Unmarshal(value, &valueData)
		fmt.Fprintln(w, valueData["name"].(string)+"\t"+valueData["id"].(string))
	}

	w.Flush()
}

func fetch(url string) ([]ConsulKV, error) {
	req, err := http.NewRequest("GET", url, nil)
	if err != nil {
		return nil, err
	}

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		return nil, err
	}

	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}

	var kvs []ConsulKV
	json.Unmarshal(body, &kvs)
	return kvs, nil
}