Example go code to talk to targetd

example_targetd.go

package main

import "fmt"
import "net/http"
import "log"
import "encoding/json"
import "bytes"
import "io/ioutil"

func main() {

	type Json_Rpc struct {
	    Id int64		`json:"id"`
	    Method string	`json:"method"`
	    Params map[string]interface{} `json:"params"`
	    Jsonrpc string	`json:"jsonrpc"`
	}

	params := map[string]interface{}{ "pool":"vg-targetd/thin_pool" }

	m := Json_Rpc{0, "vol_list", params, "2.0" }

	b, err := json.Marshal(m)

	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("Request length = ", len(b))
	fmt.Println("Request payload", string(b))

	var client = &http.Client{}

	req, err := http.NewRequest(
		"POST", "http://localhost:18700/targetrpc", bytes.NewBuffer(b))

	if err != nil {
		log.Fatal(err)
	}

	req.Header.Add("Content-Type", "application/json")
	req.SetBasicAuth("admin", "fubar")

	resp, err := client.Do(req)

	if err != nil {
		log.Fatal(err)
	}

	defer resp.Body.Close()

	fmt.Println("response Status:", resp.Status)
	fmt.Println("response Headers:", resp.Header)
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println("response Body:", string(body))
}