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110 lines
3.0 KiB
Go
110 lines
3.0 KiB
Go
// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
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// See License.txt for license information.
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package model
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import (
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"encoding/json"
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"github.com/gorilla/websocket"
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"net/http"
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)
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type WebSocketClient struct {
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Url string // The location of the server like "ws://localhost:8065"
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ApiUrl string // The api location of the server like "ws://localhost:8065/api/v3"
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Conn *websocket.Conn // The WebSocket connection
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AuthToken string // The token used to open the WebSocket
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Sequence int64 // The ever-incrementing sequence attached to each WebSocket action
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EventChannel chan *WebSocketEvent
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ResponseChannel chan *WebSocketResponse
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}
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// NewWebSocketClient constructs a new WebSocket client with convienence
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// methods for talking to the server.
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func NewWebSocketClient(url, authToken string) (*WebSocketClient, *AppError) {
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header := http.Header{}
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header.Set(HEADER_AUTH, "BEARER "+authToken)
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conn, _, err := websocket.DefaultDialer.Dial(url+API_URL_SUFFIX+"/users/websocket", header)
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if err != nil {
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return nil, NewLocAppError("NewWebSocketClient", "model.websocket_client.connect_fail.app_error", nil, err.Error())
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}
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return &WebSocketClient{
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url,
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url + API_URL_SUFFIX,
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conn,
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authToken,
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1,
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make(chan *WebSocketEvent, 100),
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make(chan *WebSocketResponse, 100),
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}, nil
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}
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func (wsc *WebSocketClient) Connect() *AppError {
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header := http.Header{}
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header.Set(HEADER_AUTH, "BEARER "+wsc.AuthToken)
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var err error
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wsc.Conn, _, err = websocket.DefaultDialer.Dial(wsc.ApiUrl+"/users/websocket", header)
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if err != nil {
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return NewLocAppError("NewWebSocketClient", "model.websocket_client.connect_fail.app_error", nil, err.Error())
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}
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return nil
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}
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func (wsc *WebSocketClient) Close() {
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wsc.Conn.Close()
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}
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func (wsc *WebSocketClient) Listen() {
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go func() {
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for {
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var rawMsg json.RawMessage
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var err error
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if _, rawMsg, err = wsc.Conn.ReadMessage(); err != nil {
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return
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}
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var event WebSocketEvent
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if err := json.Unmarshal(rawMsg, &event); err == nil && event.IsValid() {
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wsc.EventChannel <- &event
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continue
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}
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var response WebSocketResponse
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if err := json.Unmarshal(rawMsg, &response); err == nil && response.IsValid() {
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wsc.ResponseChannel <- &response
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continue
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}
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}
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}()
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}
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func (wsc *WebSocketClient) SendMessage(action string, data map[string]interface{}) {
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req := &WebSocketRequest{}
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req.Seq = wsc.Sequence
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req.Action = action
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req.Data = data
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wsc.Sequence++
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wsc.Conn.WriteJSON(req)
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}
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// UserTyping will push a user_typing event out to all connected users
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// who are in the specified channel
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func (wsc *WebSocketClient) UserTyping(channelId, parentId string) {
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data := map[string]interface{}{
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"channel_id": channelId,
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"parent_id": parentId,
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}
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wsc.SendMessage("user_typing", data)
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}
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// GetStatuses will return a map of string statuses using user id as the key
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func (wsc *WebSocketClient) GetStatuses() {
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wsc.SendMessage("get_statuses", nil)
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}
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