func safeDecodeJSON(in interface{}, out interface{}) *he.Response {
decoder, ok := in.(*json.Decoder)
if !ok {
ret := rfc7231.StatusUnsupportedMediaType(he.NetPrintf("PUT and POST requests must have a document media type"))
return &ret
}
var tmp interface{}
err := decoder.Decode(&tmp)
if err != nil {
ret := rfc7231.StatusUnsupportedMediaType(he.NetPrintf("Couldn't parse: %v", err))
return &ret
}
str, err := json.Marshal(tmp)
if err != nil {
panic(err)
}
err = json.Unmarshal(str, out)
if err != nil {
ret := rfc7231.StatusUnsupportedMediaType(he.NetPrintf("Request body didn't have expected structure (field had wrong data type): %v", err))
return &ret
}
if !jsondiff.Equal(tmp, out) {
diff, err := jsondiff.NewJSONPatch(tmp, out)
if err != nil {
panic(err)
}
entity := decodeJSONError{
message: locale.Sprintf("Request body didn't have expected structure (extra or missing fields). The included diff would make the request acceptable."),
diff: diff,
}
ret := rfc7231.StatusUnsupportedMediaType(entity)
return &ret
}
return nil
}
func Logf(format string, a ...interface{}) {
str := locale.Sprintf(format, a...).L10NString(serverMessageLocale)
if strings.HasSuffix(format, "\n") {
fmt.Fprint(os.Stderr, str)
} else {
fmt.Fprintln(os.Stderr, str)
}
}
// Panic, but a little nicer
func programmerError(str string) {
panic(locale.Errorf("Programmer Error: %s", locale.Sprintf(str)))
}
// NetPrintf is fmt.Sprintf as a NetString.
func NetPrintf(format string, a ...interface{}) NetStringer {
return NetStringer{locale.Sprintf(format, a...)}
}
func (e ParseError) L10NString(l locale.Spec) string {
return locale.Sprintf("Parse Error: %s: %s", e.Header, e.Message).L10NString(l)
}