func HandleClientSocket(eng *engine.Engine, conn net.Conn) {
reader := bufio.NewReader(conn)
writer := make(chan *message.Message, WRITE_QUEUE)
kill := make(chan bool)
associatedObj := object.NewObject(nil, object.DUMMY_ID)
associatedObj.SetWriter(writer)
defer func() {
conn.Close()
associatedObj.SetWriter(nil)
kill <- true
}()
go func() {
socketWriter := bufio.NewWriter(conn)
for {
select {
case writerMsg := <-writer:
_, err := socketWriter.WriteString(writerMsg.Data + "\n")
if err != nil {
log.Println("Unexpected error (write socket): ", err)
}
err = socketWriter.Flush()
if err != nil {
log.Println("Unexpected error (flush socket): ", err)
}
case <-kill:
return
}
}
}()
for {
rawMessage, err := reader.ReadString('\n')
if err != nil {
return
}
trimmedMessage := strings.TrimSpace(rawMessage)
splitMessage := strings.SplitN(trimmedMessage, " ", 2)
msg := message.MakeMutableMessage(splitMessage[0])
if len(splitMessage) > 1 {
msg.Append(splitMessage[1])
}
msg.Finalize()
eng.Do(&associatedObj, msg)
}
}
func (db *Database) CreateObject() *object.Object {
db.Lock()
defer db.Unlock()
id := db.getNextId()
obj := object.NewObject(db.saver, id)
return obj
}
func (db *Database) getOrCreateObj(saver chan *object.SerializableObject, id object.ObjectID) *object.Object {
db.Lock()
defer db.Unlock()
obj := db.objects[id]
if obj == nil {
obj = object.NewObject(saver, id)
db.objects[id] = obj
}
return obj
}
func WSConnection(eng *engine.Engine, ws *websocket.Conn) {
decoder := json.NewDecoder(ws)
writer := make(chan *message.Message, WRITE_QUEUE)
kill := make(chan bool)
associatedObj := object.NewObject(nil, object.DUMMY_ID)
associatedObj.SetWriter(writer)
defer func(o *object.Object) {
associatedObj.SetWriter(nil)
kill <- true
}(associatedObj)
go func() {
encoder := json.NewEncoder(ws)
for {
select {
case writerMsg := <-writer:
err := encoder.Encode(writerMsg)
if err != nil {
log.Println("Unexpected error (encode JSON): ", err)
}
case <-kill:
return
}
}
}()
for {
readerMsg := &message.Message{}
err := decoder.Decode(readerMsg)
if err != nil {
if err != io.EOF {
log.Println("Unexpected error (decode JSON): ", err)
}
return
}
readerMsg.Finalize()
eng.Do(&associatedObj, readerMsg)
}
}