freifunkmanager/lib/http/io.go

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2017-05-08 19:13:29 +02:00
// Package http provides the
// logic of the webserver
package http
import (
"encoding/json"
"errors"
"net/http"
)
// Function to read data from a request via json format
// Input: pointer to http request r, interface to
func Read(r *http.Request, to interface{}) (err error) {
if r.Header.Get("Content-Type") != "application/json" {
err = errors.New("no json data recived")
return
}
err = json.NewDecoder(r.Body).Decode(to)
return
}
// Function to write data as json to a http output
// Input: http response writer w, interface data
func Write(w http.ResponseWriter, data interface{}) {
js, err := json.Marshal(data)
if err != nil {
http.Error(w, "failed to encode response: "+err.Error(), http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
w.Write(js)
}