func TokenizeHandler(t tokenizer.Tokenizer) http.HandlerFunc {
return func(w http.ResponseWriter, req *http.Request) {
s := req.URL.Query().Get(":string")
log.Println("RESTful Tokenize:", s)
token, err := t.Tokenize(s)
if err != nil {
http.Error(w, err.Error(), 500)
}
fmt.Fprint(w, token)
}
}
func DetokenizeHandler(t tokenizer.Tokenizer) http.HandlerFunc {
return func(w http.ResponseWriter, req *http.Request) {
s := req.URL.Query().Get(":token")
log.Println("RESTful Detokenize:", s)
orig, err := t.Detokenize(s)
switch {
case err == tokenizer.TokenNotFound:
http.Error(w, "Token not found", 404)
case err != nil:
http.Error(w, err.Error(), 500)
}
fmt.Fprint(w, orig)
}
}
// A websocket handler for detokenization
func Detokenize(t tokenizer.Tokenizer) wsHandler {
return func(ws *websocket.Conn) {
dec := json.NewDecoder(ws)
enc := json.NewEncoder(ws)
for {
var request DetokenizeRequest
// Read one request from the socket and attempt to decode
switch err := dec.Decode(&request); true {
case err == io.EOF:
log.Println("Websocket disconnecting")
return
case err != nil:
// Request could not be decoded - return error
response := DetokenizeReponse{Status: invalidRequest, Error: err.Error()}
enc.Encode(&response)
return
}
data := make(map[string]foundToken)
for fieldname, token := range request.Data {
ft := foundToken{
Token: token,
}
text, err := t.Detokenize(token)
switch {
case nil == err:
ft.Text = text
ft.Found = true
case err == tokenizer.TokenNotFound:
ft.Found = false
case err != nil:
log.Panic(err)
}
data[fieldname] = ft
}
response := DetokenizeReponse{
ReqId: request.ReqId,
Status: success,
Data: data,
}
enc.Encode(response)
}
}
}
func Tokenize(t tokenizer.Tokenizer) wsHandler {
return func(ws *websocket.Conn) {
log.Println("New websocket connection")
log.Println(" Location: ", ws.Config().Location)
log.Println(" Origin: ", ws.Config().Origin)
log.Println(" Protocol: ", ws.Config().Protocol)
dec := json.NewDecoder(ws)
enc := json.NewEncoder(ws)
for {
var err error
var request JsonTokenizeRequest
// Read one request from the socket and attempt to decode
switch err = dec.Decode(&request); true {
case err == io.EOF:
log.Println("Websocket disconnecting")
return
case err != nil:
// Request could not be decoded - return error
response := TokenizeReponse{Status: invalidRequest, Error: err.Error()}
enc.Encode(&response)
log.Println("Invalid request - websocket disconnecting")
return
}
data := make(map[string]string)
for fieldname, text := range request.Data {
data[fieldname], err = t.Tokenize(text)
if err != nil {
// TODO: Do something nicer with this error?
log.Panic(err)
}
}
response := TokenizeReponse{
ReqId: request.ReqId,
Status: success,
Data: data,
}
enc.Encode(response)
}
}
}