func handleChangeNotification(socket *websocket.Conn, userID string, err chan string) {
res, errr := r.Table("notifications").
Filter(r.Row.Field("UserId").
Eq(userID)).
Changes().
Run(api.Sess)
var value HandleChange
if errr != nil {
err <- errr.Error()
}
for res.Next(&value) {
var notif api.Notification
var simpleNotif api.WebSocketNotification
mapstructure.Decode(value.NewVal, ¬if)
if notif.Id == "" {
mapstructure.Decode(value.OldVal, ¬if)
simpleNotif.OldVal = true
} else {
simpleNotif.OldVal = false
}
simpleNotif.Title = "notification"
simpleNotif.Type = notif.Type
simpleNotif.Name = notif.Name
simpleNotif.UserIdFrom = notif.UserIdFrom
simpleNotif.IdLink = notif.IdLink
simpleNotif.CreatedAt = notif.CreatedAt
errr := socket.WriteJSON(simpleNotif)
if errr != nil {
err <- errr.Error()
}
}
}
func streamResults(sock *websocket.Conn, params searchParams, limit int) {
start := time.Now()
count := 0
results := make(chan searchResult)
control := make(chan struct{}, 1)
go find(results, control, params)
for {
res, ok := <-results
if !ok {
log.Printf("Finished request in %v\n", time.Since(start))
return
}
count++
log.Printf("Found result #%v after %v\n", count, time.Since(start))
err := sock.WriteJSON(res)
if err != nil {
log.Printf("Error while writing result: %v\n", err)
control <- struct{}{}
return
}
if count >= limit {
log.Printf("Finished request after hitting limit in %v\n", time.Since(start))
control <- struct{}{}
return
}
}
}
func subChannelEvent(c *websocket.Conn, channel string) {
subChan := subChannel{Event: "addChannel", Channel: channel}
err := c.WriteJSON(subChan)
if err != nil {
log.Printf("sub channel %s err :%s", channel, err)
}
}
// writer runs in a goroutine for each connected WS client. It emits all message returned by the observer.
func writer(ws *websocket.Conn, a *ApiHandlers) {
pingTicker := time.NewTicker(pingPeriod)
s := a.getDBSubscriber()
jww.INFO.Println("Opened WebSocket connection.")
defer func(is *subscriber) {
jww.INFO.Println("Closing WebSocket connection.")
is.quitChan <- true
pingTicker.Stop()
ws.Close()
}(s)
for {
select {
case msg := <-s.bufChan:
ws.SetWriteDeadline(time.Now().Add(writeWait))
if err := ws.WriteJSON(msg); err != nil {
return
}
case <-pingTicker.C:
ws.SetWriteDeadline(time.Now().Add(writeWait))
if err := ws.WriteMessage(websocket.PingMessage, []byte{}); err != nil {
return
}
}
}
}
func messagePing(ws *websocket.Conn, vault *client) MessageHandler {
return func(data map[string]interface{}) error {
return ws.WriteJSON(&messagePingResponse{
Pong: true,
})
}
}
func streamStatus(sock *websocket.Conn) {
installed := installedPacks()
filteredInstalled := []shared.Pack{}
available := availablePacks()
loopinstalled:
for _, ip := range installed {
for ai, ap := range available {
if ip.Installing && ip.File == ap.File {
available[ai].Installing = true
continue loopinstalled
}
}
filteredInstalled = append(filteredInstalled, ip)
}
info := StatusInfo{
Packs: PackInfo{
Installed: filteredInstalled,
Available: available,
},
Version: global.buildVersion,
}
err := sock.WriteJSON(controlResponse{Typ: "StatusResponse", Data: info})
if err != nil {
log.Printf("Error while writing status info: %v\n", err)
return
}
}
func clientGetRequest(wsConn *websocket.Conn, action string) {
messageMap := make(map[string]interface{})
messageMap["action"] = action
wsConn.WriteJSON(messageMap)
}
func clientDiffRequest(wsConn *websocket.Conn, session *mgo.Session) {
// init client_diff_request
response_map := make(map[string]interface{})
response_map["action"] = "client_diff_request"
// find syncable object uuids
cb := session.DB("landline").C("SyncableObjects")
var m_result []map[string]interface{}
err := cb.Find(bson.M{}).All(&m_result)
if err != nil {
log.Println(err)
} else {
// objects that the clients knows, but the server may not
object_uuids := make(map[string]interface{})
// loop results
for u, result := range m_result {
_ = u
object_uuids[result["uuid"].(string)] = result["time_modified_since_creation"]
}
response_map["object_uuids"] = object_uuids
// send it over websocket
wsConn.WriteJSON(response_map)
log.Println("Wrote message:")
jsonString, _ := json.Marshal(response_map)
log.Println(string(jsonString))
}
}
func commandUnsubscribeFromTreeState(conn *websocket.Conn, id string, message map[string]interface{}) {
name, ok := stringProp(message, "name")
if !ok {
sendErrorMessage(conn, "No \"name\" property specified or not a string in UNSUBSCRIBE_FROM_TREE_STATE message")
return
}
globalLock.Lock()
defer globalLock.Unlock()
_, ok = broadcasts[name]
if !ok {
sendErrorMessage(conn, fmt.Sprintf("Unknown broadcast: %v", name))
return
}
listeners, ok := treeStateListeners[name]
if !ok {
return
}
delete(*listeners, id)
conn.WriteJSON(struct {
Command string `json:"command"`
}{
"UNSUBSCRIBE_FROM_TREE_STATE_RECEIVED",
})
}
func sendErrorMessage(conn *websocket.Conn, message string) {
log.Println(message)
conn.WriteJSON(struct {
Command string `json:"command"`
Message string `json:"message"`
}{"ERROR", message})
}
func commandSubscribeToTreeState(conn *websocket.Conn, id string, message map[string]interface{}) {
name, ok := stringProp(message, "name")
if !ok {
sendErrorMessage(conn, "No \"name\" property specified or not a string in SUBSCRIBE_TO_TREE_STATE message")
return
}
globalLock.Lock()
defer globalLock.Unlock()
_, ok = broadcasts[name]
if !ok {
sendErrorMessage(conn, fmt.Sprintf("Unknown broadcast: %v", name))
return
}
listeners, ok := treeStateListeners[name]
if !ok {
listeners = &map[string]*websocket.Conn{}
treeStateListeners[name] = listeners
}
(*listeners)[id] = conn
conn.WriteJSON(struct {
Command string `json:"command"`
}{
"SUBSCRIBE_TO_TREE_STATE_RECEIVED",
})
notifyTreeListeners(name)
}
func commandEndBroadcast(conn *websocket.Conn, id string, message map[string]interface{}) {
name, ok := stringProp(message, "name")
if !ok {
sendErrorMessage(conn, "No \"name\" property specified or not a string in END_BROADCAST message")
return
}
globalLock.Lock()
defer globalLock.Unlock()
broadcast, ok := broadcasts[name]
if !ok {
sendErrorMessage(conn, fmt.Sprintf("Broadcast \"%v\" does not exist", name))
return
}
if broadcast.id != id {
sendErrorMessage(conn, fmt.Sprintf("Peer \"%v\" did not start broadcast \"%v\"", id, name))
return
}
endBroadcast(name, broadcast)
conn.WriteJSON(struct {
Command string `json:"command"`
Name string `json:"name"`
}{
"END_BROADCAST_RECEIVED",
name,
})
}
func PubSubHandler(conn *websocket.Conn, pubsubClient *redis.PubSub) {
for {
msgi, err := pubsubClient.ReceiveMessage()
if err != nil {
return
}
switch msg := interface{}(msgi).(type) {
case *redis.Message:
var json_blob interface{}
bytes_blob := []byte(msg.Payload)
if err := json.Unmarshal(bytes_blob, &json_blob); err != nil {
logger.Printf("[%s][error] failed to parse JSON %v, because %v", conn.RemoteAddr(), msg.Payload, err)
continue
}
if err := conn.WriteJSON(json_blob); err != nil {
logger.Printf("[%s][error] failed to send JSON, because %v", conn.RemoteAddr(), err)
conn.Close()
return
}
logger.Printf("[%s][send] OK", conn.RemoteAddr())
default:
logger.Printf("[%s][error] Unkown message: %s", conn.RemoteAddr(), msg)
return
}
}
}
// NOTE :: When a guild voice server changes how do we shut this down
// properly, so a new connection can be setup without fuss?
//
// wsHeartbeat sends regular heartbeats to voice Discord so it knows the client
// is still connected. If you do not send these heartbeats Discord will
// disconnect the websocket connection after a few seconds.
func (v *VoiceConnection) wsHeartbeat(wsConn *websocket.Conn, close <-chan struct{}, i time.Duration) {
if close == nil || wsConn == nil {
return
}
var err error
ticker := time.NewTicker(i * time.Millisecond)
for {
v.log(LogDebug, "sending heartbeat packet")
v.wsMutex.Lock()
err = wsConn.WriteJSON(voiceHeartbeatOp{3, int(time.Now().Unix())})
v.wsMutex.Unlock()
if err != nil {
v.log(LogError, "error sending heartbeat to voice endpoint %s, %s", v.endpoint, err)
return
}
select {
case <-ticker.C:
// continue loop and send heartbeat
case <-close:
return
}
}
}
// heartbeat sends regular heartbeats to Beam so it knows the client
// is still connected. If you do not send these heartbeats Beam will
// disconnect the websocket connection after a few seconds.
func (s *Session) heartbeat(wsConn *websocket.Conn, listening <-chan interface{}, i time.Duration) {
if listening == nil || wsConn == nil {
return
}
s.Lock()
s.DataReady = true
s.Unlock()
var err error
ticker := time.NewTicker(i * time.Millisecond)
for {
err = wsConn.WriteJSON(heartbeatOp{1, int(time.Now().Unix())})
if err != nil {
fmt.Println("Error sending heartbeat:", err)
return
}
select {
case <-ticker.C:
// continue loop and send heartbeat
case <-listening:
return
}
}
}
func loadLatestSales(websocketConnection *websocket.Conn) {
results, err := r.Table("analytics").Filter(M{
"type": "sale",
}).OrderBy(
r.Desc(r.Row.Field("data").Field("date")),
).Limit(10).Map(func(row r.Term) interface{} {
return row.Field("data")
}).Run(rethinkSession)
if err != nil {
log.Printf("error loadLatestSales: %q", err)
}
defer results.Close()
var latestSales []interface{}
err = results.All(&latestSales)
if err != nil {
log.Println(err)
return
}
log.Printf("sending latest %d sales\n", len(latestSales))
socketOutgoingMessage := &SocketOutgoingMessage{
Function: "loadLatestSales",
Data: M{
"type": "sale",
"data": latestSales,
},
}
err = websocketConnection.WriteJSON(socketOutgoingMessage)
if err != nil {
log.Println(err)
}
}
func (c Discord) WSInit(con *websocket.Conn, msgChan chan WSMsg) {
//send init on wire
p := Properties{
OS: "DiscordBot",
Browser: "discord.go",
Device: "console",
Referrer: "",
ReferringDomain: "",
}
msgData := INIT{
Token: c.Token,
Version: 3, // hard-coded so changes will only happen when coded in
Properties: &p,
}
msg := WSMsg{
Op: 2,
Data: msgData,
}
j, _ := json.Marshal(msg)
fmt.Printf("msgSentInit: `%s`\n", j)
/* if err := con.WriteMessage(1, j); err != nil {
fmt.Println("wsInit:",err)
} */
err := con.WriteJSON(msg)
if err != nil {
fmt.Println("wsInit:", err)
}
}
func wsSend(con *websocket.Conn, msgSend chan WSMsg, done, readDone, stopWS chan int) {
defer fmt.Println("wsSend: goroutine stopped")
seq := 1
for {
select {
case <-stopWS:
stopSend(con, done)
return
case <-readDone:
stopSend(con, done)
return
case nextMsg, ok := <-msgSend:
if ok {
//send the message on the channel to the connection
nextMsg.Seq = seq
seq++
fmt.Println("wsSend: sending msg", nextMsg.Type)
j, _ := json.Marshal(nextMsg)
fmt.Printf("wsSend: msg sent: `%s`\n", j)
if err := con.WriteJSON(&nextMsg); err != nil {
fmt.Println("wsSend:", err)
}
}
}
}
}
// Handle open Subscriber.
func onOpen(conn *websocket.Conn, w http.ResponseWriter, r *http.Request, sessionID string, app *app) websocketError {
params := r.URL.Query()
p := params.Get("protocol")
protocol, err := strconv.Atoi(p)
if err != nil {
return newInvalidVersionStringFormatError()
}
switch {
case strings.TrimSpace(p) == "":
return newNoProtocolVersionSuppliedError()
case protocol != SUPPORTED_PROTOCOL_VERSION:
return newUnsupportedProtocolVersionError()
case app.ApplicationDisabled:
return newApplicationDisabledError()
case r.TLS != nil:
if app.OnlySSL {
return newApplicationOnlyAccepsSSLError()
}
}
// Create the new Subscriber
connection := newConnection(sessionID, conn)
app.Connect(connection)
// Everything went fine. Huhu.
if err := conn.WriteJSON(newConnectionEstablishedEvent(connection.SocketID)); err != nil {
return newGenericReconnectImmediatelyError()
}
return nil
}
func hostState(msg Message, gameId string, playerId int, gs GameService, ws *websocket.Conn, db *gorp.DbMap, log *log.Logger) error {
log.Printf("Got state change request from host: %v", msg["state"])
game, _, err := gs.GetGame(db, gameId, playerId)
if err != nil {
log.Printf("%#v", err)
return err
}
// TODO: check to make sure this is a valid state
game.State = msg["state"].(string)
var board *TicTacToe_Board
if game.State == "start" {
board = &TicTacToe_Board{Game: gameId}
log.Printf("Setting up starting objects")
// we are starting a game, so insert a new board
err = board.setBoard([]int{0, 0, 0, 0, 0, 0, 0, 0, 0})
if err != nil {
log.Printf("Unable to set game board: %#v", err)
return err
}
log.Printf("Inserting board: %#v", board)
err = db.Insert(board)
if err != nil {
log.Printf("Couldn't insert board: %#v", err)
return err
}
} else {
board, err = getBoard(gameId, db)
if err != nil {
log.Printf("Unable to get board: %#v", err)
return err
}
}
log.Printf("Updating game state to %#v", game.State)
count, err := db.Update(game)
if err != nil || count == 0 {
log.Printf("Unable to change game state: %v", err)
return err
}
niceBoard, err := board.getBoard()
if err != nil {
log.Printf("Error getting board: %#v", board)
return err
}
log.Printf("Sending state %v to all players", msg["state"])
gs.Broadcast(gameId, Message{
"type": "update",
"board": niceBoard,
"state": "start",
})
log.Printf("Updating UI")
ws.WriteJSON(Message{
"type": "update",
"board": niceBoard,
"state": "start",
})
return nil
}
// Handle sending messages to the front-end via websockets
func wsWriter(ws *websocket.Conn, msgs chan wsMessage) {
for {
msg := <-msgs
ws.WriteJSON(msg)
}
}
// Emit an Websocket ErrorEvent
func emitWSError(err websocketError, conn *websocket.Conn) {
event := newErrorEvent(err.GetCode(), err.GetMsg())
if err := conn.WriteJSON(event); err != nil {
log.Error(err)
}
}
// Registers the connection from to the intools engine
func (appClient *AppClient) Register(conn *websocket.Conn) {
// Add the client to the connected clients
logs.Debug.Printf("Connection event from client")
var client = &Client{
Socket: conn,
GroupIds: []string{},
}
logs.Debug.Printf("clients before %v", appClient.Clients)
appClient.Clients[conn] = client
// appClient.Clients = append(appClient.Clients, client)
logs.Debug.Printf("clients %v", appClient.Clients)
// Send ack
message := Message{
Command: "connected",
Data: nil,
}
conn.WriteJSON(message)
// Handles events from client
Events:
for {
var message Message
err := conn.ReadJSON(&message)
if err != nil {
switch err.(type) {
case *websocket.CloseError:
logs.Debug.Printf("Websocket %p is deconnected. Removing from clients", conn)
delete(appclient.Clients, conn)
logs.Debug.Printf("Clients are now %v", appClient.Clients)
break Events
default:
logs.Error.Printf("Error while reading json message : %s", err)
continue Events
}
}
logs.Debug.Printf("Message %v", message)
switch message.Command {
case "register-group":
// Handles group registering for the client
client.GroupIds = append(client.GroupIds, message.Data["groupId"].(string))
logs.Debug.Printf("Registered group %s for client %p", message.Data["groupId"], client)
case "unregister-group":
// Handles group unregistering for the client
i := utils.IndexOf(client.GroupIds, message.Data["groupId"].(string))
if i != -1 {
client.GroupIds = append(client.GroupIds[:i], client.GroupIds[i+1:]...)
logs.Debug.Printf("Unregistered group %s for client %p", message.Data["groupId"], client)
}
}
logs.Debug.Printf("Registered groups for client %p are now : %s", client, client.GroupIds)
}
}
// unsubscribe from an event
func unsubscribe(t *testing.T, con *websocket.Conn, eventid string) {
err := con.WriteJSON(rpctypes.WSRequest{
Type: "unsubscribe",
Event: eventid,
})
if err != nil {
t.Fatal(err)
}
}
func sendErrorNotification(c *websocket.Conn, err error) error {
return c.WriteJSON(&struct {
MsgType string `json:"msg-type"`
Message string `json:"message"`
}{
"error",
err.Error(),
})
}
func sendPostSimilarities(c *websocket.Conn, s map[int64]int64) error {
return c.WriteJSON(&struct {
MsgType string `json:"msg-type"`
SimilarityMap map[int64]int64 `json:"similarities"`
}{
"post-similarities",
s,
})
}
func sendBlogsLikingPostData(c *websocket.Conn, blogs []string) error {
return c.WriteJSON(&struct {
MsgType string `json:"msg-type"`
Blogs []string `json:"blogs"`
}{
"blogs-liking-post",
blogs,
})
}
func sendPostsData(c *websocket.Conn, pd map[int64]tumblr.Post) error {
return c.WriteJSON(&struct {
MsgType string `json:"msg-type"`
PostData map[int64]tumblr.Post `json:"posts-data"`
}{
"posts-data",
pd,
})
}
func PlayerInit(playerId int, gameId string, gs GameService, ws *websocket.Conn, db *gorp.DbMap) error {
log.Printf("Player is connected: %#v", playerId)
game, _, err := gs.GetGame(db, gameId, playerId)
if err != nil {
log.Printf("Couldn't get player and/or game")
return err
}
if game.State == "start" {
log.Printf("Player %#v rejoining game in play", playerId)
board, err := getBoard(gameId, db)
if err != nil {
log.Printf("Can't get TTT board: %#v", err)
return err
}
log.Printf("Got board, getting nicer one: %#v", board)
niceBoard, err := board.getBoard()
if err != nil {
log.Printf("Unable to get nice board: %#v", err)
return err
}
log.Printf("Got board for player %#v: %#v", playerId, board)
// There may not be a board yet so just try and send it
ws.WriteJSON(Message{
"type": "update",
"state": game.State,
"board": niceBoard,
})
} else {
ws.WriteJSON(Message{
"type": "update",
"state": game.State,
"board": nil,
})
}
// check to make sure this player has a turn row
turn := TicTacToe_Turn{}
err = db.SelectOne(&turn, "select * from tictactoe_turn where game=? and player=?", gameId, playerId)
if err != nil {
turn.Game = gameId
turn.Player = playerId
turn.Move = -1
err = db.Insert(&turn)
if err != nil {
log.Printf("Unable to insert initial turn row: %#v", err)
return err
}
}
gs.SendHost(gameId, Message{"type": "join"})
return nil
}
func wsSendBeat(con *websocket.Conn, now time.Time) {
beat := WSMsg{
Op: 1,
Data: now.Unix(),
}
fmt.Println("sent beat")
con.WriteJSON(beat)
j, _ := json.Marshal(beat)
fmt.Printf("beat: %s\n", j)
}
