Decoding and encoding SOAP using Go (Awesomeness!!!)

soap-EandD.go

package main

import (
	"bytes"
	"encoding/xml"
	"fmt"
	"github.com/webconnex/xmlutil"
	"log"
	//"net/http"
)

type Envelope struct {
	Body `xml:"soap:"`
}

type Body struct {
	Msg interface{}
}

type MethodCall struct {
	One string
	Two string
}

type MethodCallResponse struct {
	Three string
}

func main() {
	x := xmlutil.NewXmlUtil()
	x.RegisterNamespace("http://www.w3.org/2001/XMLSchema-instance", "xsi")
	x.RegisterNamespace("http://www.w3.org/2001/XMLSchema", "xsd")
	x.RegisterNamespace("http://www.w3.org/2003/05/soap-envelope", "soap")

	x.RegisterTypeMore(Envelope{}, xml.Name{"http://www.w3.org/2003/05/soap-envelope", ""},
		[]xml.Attr{
			xml.Attr{xml.Name{"xmlns", "xsi"}, "http://www.w3.org/2001/XMLSchema-instance"},
			xml.Attr{xml.Name{"xmlns", "xsd"}, "http://www.w3.org/2001/XMLSchema"},
			xml.Attr{xml.Name{"xmlns", "soap"}, "http://www.w3.org/2003/05/soap-envelope"},

			// ----------------- Adding safaricom SOAP Configurations ------------------------
			xml.Attr{xml.Name{"xmlns", "SOAP-ENV"}, "http://schemas.xmlsoap.org/soap/envelope/"},
			xml.Attr{xml.Name{"xmlns", "soapenv"}, "http://schemas.xmlsoap.org/soap/envelope/"},
			xml.Attr{xml.Name{"xmlns", "tns"}, "tns:ns"},
		})

	x.RegisterTypeMore("", xml.Name{}, []xml.Attr{
		xml.Attr{xml.Name{"http://www.w3.org/2001/XMLSchema-instance", "type"}, "xsd:string"},
	})

	buf := new(bytes.Buffer)
	buf.WriteString(`<?xml version="1.0" encoding="utf-8"?>`)
	buf.WriteByte('\n')

	enc := x.NewEncoder(buf)

	env := &Envelope{Body{MethodCall{
		One: "one",
		Two: "two",
	}}}

	if err := enc.Encode(env); err != nil {
		log.Fatal(err)
	}

	// Print request
	bs := buf.Bytes()
	bs = bytes.Replace(bs, []byte{'>', '<'}, []byte{'>', '\n', '<'}, -1)
	fmt.Printf("%s\n\n", bs)

	/*
	   // Send response, SOAP 1.2, fill in url, namespace, and action
	   var r *http.Response
	   if r, err = http.Post(url, "application/soap+xml; charset=utf-8; action="+namespace+"/"+action, buf); err != nil {
	       return
	   }
	   dec := x.NewDecoder(r.Body)
	*/

	// Decode response
	dec := x.NewDecoder(bytes.NewBufferString(`<?xml version="1.0" encoding="utf-8"?>
    <soap:Envelope>
        <soap:Body>
            <MethodCallResponse>
                <Three>three</Three>
            </MethodCallResponse>
        </soap:Body>
    </soap:Envelope>`))

	find := []xml.Name{
		xml.Name{"", "MethodCallResponse"},
		xml.Name{"http://www.w3.org/2003/05/soap-envelope", "Fault"},
	}

	var start *xml.StartElement
	var err error

	if start, err = dec.Find(find); err != nil {
		log.Fatal(err)
	}

	if start.Name.Local == "Fault" {
		log.Fatal("Fault!") // Here you can decode a Soap Fault
	}

	var resp MethodCallResponse
	if err := dec.DecodeElement(&resp, start); err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%#v\n\n", resp.Three)
}