func makeRequest(conn net.Conn, req *types.Request) (*types.Response, error) {
// Write desired request
err := types.WriteMessage(req, conn)
if err != nil {
return nil, err
}
// Write flush request
err = types.WriteMessage(types.RequestFlush(), conn)
if err != nil {
return nil, err
}
// Read desired response
var res = &types.Response{}
err = types.ReadMessage(conn, res)
if err != nil {
return nil, err
}
// Read flush response
var resFlush = &types.Response{}
err = types.ReadMessage(conn, resFlush)
if err != nil {
return nil, err
}
if resFlush.Type != types.MessageType_Flush {
return nil, errors.New(Fmt("Expected types.MessageType_Flush but got %v instead", resFlush.Type))
}
return res, nil
}
func makeRequest(conn net.Conn, req *types.Request) (*types.Response, error) {
var bufWriter = bufio.NewWriter(conn)
// Write desired request
err := types.WriteMessage(req, bufWriter)
if err != nil {
return nil, err
}
err = types.WriteMessage(types.ToRequestFlush(), bufWriter)
if err != nil {
return nil, err
}
err = bufWriter.Flush()
if err != nil {
return nil, err
}
// Read desired response
var res = &types.Response{}
err = types.ReadMessage(conn, res)
if err != nil {
return nil, err
}
var resFlush = &types.Response{}
err = types.ReadMessage(conn, resFlush)
if err != nil {
return nil, err
}
if _, ok := resFlush.Value.(*types.Response_Flush); !ok {
return nil, errors.New(Fmt("Expected flush response but got something else: %v", reflect.TypeOf(resFlush)))
}
return res, nil
}
func (cli *socketClient) recvResponseRoutine(conn net.Conn) {
r := bufio.NewReader(conn) // Buffer reads
for {
var res = &types.Response{}
err := types.ReadMessage(r, res)
if err != nil {
cli.StopForError(err)
return
}
switch r := res.Value.(type) {
case *types.Response_Exception:
// XXX After setting cli.err, release waiters (e.g. reqres.Done())
cli.StopForError(errors.New(r.Exception.Error))
return
default:
// log.Debug("Received response", "responseType", reflect.TypeOf(res), "response", res)
err := cli.didRecvResponse(res)
if err != nil {
cli.StopForError(err)
return
}
}
}
}
func main() {
conn, err := Connect("unix://test.sock")
if err != nil {
Exit(err.Error())
}
// Read a bunch of responses
go func() {
counter := 0
for {
var res = &types.Response{}
err := types.ReadMessage(conn, res)
if err != nil {
Exit(err.Error())
}
counter += 1
if counter%1000 == 0 {
fmt.Println("Read", counter)
}
}
}()
// Write a bunch of requests
counter := 0
for i := 0; ; i++ {
var bufWriter = bufio.NewWriter(conn)
var req = types.RequestEcho("foobar")
err := types.WriteMessage(req, bufWriter)
if err != nil {
Exit(err.Error())
}
err = bufWriter.Flush()
if err != nil {
Exit(err.Error())
}
counter += 1
if counter%1000 == 0 {
fmt.Println("Write", counter)
}
}
}
// Read requests from conn and deal with them
func (s *SocketServer) handleRequests(closeConn chan error, conn net.Conn, responses chan<- *types.Response) {
var count int
var bufReader = bufio.NewReader(conn)
for {
var req = &types.Request{}
err := types.ReadMessage(bufReader, req)
if err != nil {
if err == io.EOF {
closeConn <- err
} else {
closeConn <- fmt.Errorf("Error reading message: %v", err.Error())
}
return
}
s.appMtx.Lock()
count++
s.handleRequest(req, responses)
s.appMtx.Unlock()
}
}
// Read requests from conn and deal with them
func handleRequests(mtx *sync.Mutex, app types.Application, closeConn chan error, conn net.Conn, responses chan<- *types.Response) {
var count int
var bufReader = bufio.NewReader(conn)
for {
var req = &types.Request{}
err := types.ReadMessage(bufReader, req)
if err != nil {
if err == io.EOF {
closeConn <- fmt.Errorf("Connection closed by client")
} else {
closeConn <- fmt.Errorf("Error in handleRequests: %v", err.Error())
}
return
}
mtx.Lock()
count++
handleRequest(app, req, responses)
mtx.Unlock()
}
}
func TestStream(t *testing.T) {
numAppendTxs := 200000
// Start the listener
_, err := server.StartListener("tcp://127.0.0.1:46658", NewDummyApplication())
if err != nil {
Exit(err.Error())
}
// Connect to the socket
conn, err := Connect("tcp://127.0.0.1:46658")
if err != nil {
Exit(err.Error())
}
// Read response data
done := make(chan struct{})
go func() {
counter := 0
for {
var res = &types.Response{}
err := types.ReadMessage(conn, res)
if err != nil {
Exit(err.Error())
}
// Process response
switch res.Type {
case types.MessageType_AppendTx:
counter += 1
if res.Code != types.CodeType_OK {
t.Error("AppendTx failed with ret_code", res.Code)
}
if counter > numAppendTxs {
t.Fatal("Too many AppendTx responses")
}
t.Log("response", counter)
if counter == numAppendTxs {
go func() {
time.Sleep(time.Second * 2) // Wait for a bit to allow counter overflow
close(done)
}()
}
case types.MessageType_Flush:
// ignore
default:
t.Error("Unexpected response type", res.Type)
}
}
}()
// Write requests
for counter := 0; counter < numAppendTxs; counter++ {
// Send request
var req = types.RequestAppendTx([]byte("test"))
err := types.WriteMessage(req, conn)
if err != nil {
t.Fatal(err.Error())
}
// Sometimes send flush messages
if counter%123 == 0 {
t.Log("flush")
err := types.WriteMessage(types.RequestFlush(), conn)
if err != nil {
t.Fatal(err.Error())
}
}
}
// Send final flush message
err = types.WriteMessage(types.RequestFlush(), conn)
if err != nil {
t.Fatal(err.Error())
}
<-done
}