publishing to sns in go

gistfile1.go

package main

import (
	"encoding/xml"
	"io/ioutil"
	"log"
	"net/url"

	"github.com/bmizerany/aws4"
)

type ErrorResponse struct {
	Error struct {
		Type    string
		Code    string
		Message string
	}
	RequestId string
}

type PublishResponse struct {
	PublishResult struct {
		MessageId string
	}
	ResponseMetadata struct {
		RequestId string
	}
}

func main() {
	v := make(url.Values)
	v.Set("Action", "Publish")
	v.Set("TopicArn", "REDACTED")
	v.Set("Message", "foo")
	v.Set("Subject", "test")

	res, err := aws4.PostForm("http://sns.us-east-1.amazonaws.com/", v)
	if err != nil {
		log.Fatal(err)
	}
	defer res.Body.Close()

	log.Println(res.StatusCode)

	body, err := ioutil.ReadAll(res.Body)
	if err != nil {
		log.Fatal(err)
	}

	if res.StatusCode != 200 {
		var errorResponse ErrorResponse
		err := xml.Unmarshal(body, &errorResponse)
		if err != nil {
			log.Fatal(err)
		}
		log.Fatal(errorResponse)
	}

	var publishResponse PublishResponse
	err = xml.Unmarshal(body, &publishResponse)
	if err != nil {
		log.Fatal(err)
	}
	log.Print(publishResponse)
}