// Adds common parameters to the "params" map, signs the request,
// adds the signature to the "params" map and sends the request
// to the server. It then unmarshals the response in to the "resp"
// parameter using xml.Unmarshal()
func (mt *MTurk) query(params map[string]string, operation string, resp interface{}) os.Error {
service := MTURK_SERVICE
timestamp := time.UTC().Format(TIMESTAMP_FORMAT)
params["AWSAccessKeyId"] = mt.Auth.AccessKey
params["Service"] = service
params["Timestamp"] = timestamp
params["Operation"] = operation
// make a copy
url := *mt.URL
sign(mt.Auth, service, operation, timestamp, params)
url.RawQuery = multimap(params).Encode()
r, err := http.Get(url.String())
if err != nil {
return err
}
dump, _ := http.DumpResponse(r, true)
println("DUMP:\n", string(dump))
if r.StatusCode != 200 {
return os.NewError(fmt.Sprintf("%d: unexpected status code", r.StatusCode))
}
err = xml.Unmarshal(r.Body, resp)
r.Body.Close()
return err
}
func getBuilderList(jsonRoot string) (builders []string) {
// Create the URL first
url, err := url.Parse(jsonRoot + "/builders")
if err != nil {
log.Fatal(err)
}
r, err := http.Get(url.String())
if err != nil {
log.Fatal(err)
}
bodyData, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Fatal(err)
}
return parseBuilderList(bodyData)
}