func TestHTTPDecoder(t *testing.T) {
var out []byte
if err := codec.NewEncoderBytes(&out, h).Encode(req); err != nil {
t.Fatalf("unable to pack test data: %v", err)
}
r, err := UnpackProxyRequest(out)
if err != nil {
t.Fatalf("unable to unpack request %v", err)
}
defer r.Body.Close()
if b, _ := ioutil.ReadAll(r.Body); !bytes.Equal(b, body) {
t.Fatalf("bad bytes: %s %s", b, body)
}
if r.Method != method {
t.Fatalf("bad method: %s %s", r.Method, method)
}
if r.Header.Get("X-Cocaine-Service") != "Test" {
t.Fatalf("bad header", r.Header.Get("X-Cocaine-Service"))
}
}
func packRequest(req *http.Request) ([]byte, error) {
body, err := ioutil.ReadAll(req.Body)
if err != nil {
return nil, err
}
// method uri 1.1 headers body
headers := make([][2]string, 0, len(req.Header))
for header, values := range req.Header {
for _, val := range values {
headers = append(headers, [2]string{header, val})
}
}
var task []byte
codec.NewEncoderBytes(&task, hAsocket).Encode([]interface{}{
req.Method,
req.URL.RequestURI(),
fmt.Sprintf("%d.%d", req.ProtoMajor, req.ProtoMinor),
headers,
body,
})
return task, nil
}
func packMsg(msg messageInterface) rawMessage {
var buf []byte
err := codec.NewEncoderBytes(&buf, h).Encode([]interface{}{msg.getTypeID(), msg.getSessionID(), msg.getPayload()})
if err != nil {
fmt.Println(err)
}
return buf
}
func BenchmarkHTTPDecoder(b *testing.B) {
var out []byte
codec.NewEncoderBytes(&out, h).Encode(req)
for n := 0; n < b.N; n++ {
UnpackProxyRequest(out)
}
}
func convertPayload(in interface{}, out interface{}) error {
var buf []byte
if err := codec.NewEncoderBytes(&buf, payloadHandler).Encode(in); err != nil {
return err
}
if err := codec.NewDecoderBytes(buf, payloadHandler).Decode(out); err != nil {
return err
}
return nil
}
// Sends chunk of data to a client.
func (response *Response) Write(data interface{}) {
var res []byte
codec.NewEncoderBytes(&res, h).Encode(&data)
response.from_handler <- packMsg(&chunk{messageInfo{CHUNK, response.session}, res})
}
// WriteHead converts the HTTP status code and the headers to the cocaine format
func WriteHead(code int, headers Headers) []byte {
var out []byte
codec.NewEncoderBytes(&out, h).Encode([]interface{}{code, headers})
return out
}
func packTestReq(req []interface{}) []byte {
var out []byte
codec.NewEncoderBytes(&out, h).Encode(req)
return out
}
func (o *Overlord) handleHTTPRequest(w http.ResponseWriter, req *http.Request) {
defer req.Body.Close()
w.Header().Add("X-Powered-By", "Cocaine")
body, err := ioutil.ReadAll(req.Body)
if err != nil {
w.Header().Add("X-Error-Generated-By", "Cocaine")
w.WriteHeader(http.StatusBadRequest)
fmt.Fprint(w, "unable to read the whole body")
return
}
// method uri 1.1 headers body
headers := make([][2]string, 0, len(req.Header))
for header, values := range req.Header {
for _, val := range values {
headers = append(headers, [2]string{header, val})
}
}
var task []byte
codec.NewEncoderBytes(&task, hAsocket).Encode([]interface{}{
req.Method,
req.URL.RequestURI(),
fmt.Sprintf("%d.%d", req.ProtoMajor, req.ProtoMinor),
headers,
body,
})
channel := make(chan *cocaine.Message, 5)
o.mu.Lock()
o.counter++
counter := o.counter
o.sessions[o.counter] = channel
o.mu.Unlock()
defer func() {
o.mu.Lock()
defer o.mu.Unlock()
delete(o.sessions, counter)
}()
enqueueTask(counter, task, o.conn)
var first = true
FOR:
for msg := range channel {
switch msg.MsgType {
case chunk:
payload, ok := msg.Payload[0].([]byte)
if !ok {
log.Panicf("invalid response data, must be []byte")
continue FOR
}
if first {
first = false
var res struct {
Code int
Headers [][2]string
}
codec.NewDecoderBytes(payload, hAsocket).Decode(&res)
for _, header := range res.Headers {
w.Header().Add(header[0], header[1])
}
w.WriteHeader(res.Code)
continue FOR
}
w.Write(payload)
case _error:
log.Println("error message from worker")
w.Header().Add("X-Error-Generated-By", "Cocaine")
w.WriteHeader(http.StatusInternalServerError)
var msgerr struct {
CodeInfo [2]int
Message string
}
if err := convertPayload(msg.Payload, &msgerr); err != nil {
fmt.Fprintf(w, "unable to decode error reply: %v", err)
return
}
fmt.Fprintf(w, "worker replied with error: [%d] [%d] %s",
msgerr.CodeInfo[0], msgerr.CodeInfo[1], msgerr.Message)
return
case close:
// close type
return
default:
// protocol error
log.Printf("protocol error: unknown message %v", msg)
}
}
}
