mirror of
https://github.com/42wim/matterbridge
synced 2024-11-03 15:40:24 +00:00
295 lines
7.0 KiB
Go
295 lines
7.0 KiB
Go
package matterclient
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import (
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"encoding/json"
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"fmt"
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"strings"
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"sync"
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"time"
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"github.com/gorilla/websocket"
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lru "github.com/hashicorp/golang-lru"
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"github.com/jpillora/backoff"
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prefixed "github.com/matterbridge/logrus-prefixed-formatter"
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"github.com/mattermost/mattermost-server/v5/model"
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"github.com/sirupsen/logrus"
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)
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type Credentials struct {
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Login string
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Team string
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Pass string
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Token string
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CookieToken bool
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Server string
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NoTLS bool
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SkipTLSVerify bool
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SkipVersionCheck bool
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}
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type Message struct {
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Raw *model.WebSocketEvent
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Post *model.Post
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Team string
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Channel string
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Username string
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Text string
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Type string
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UserID string
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}
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//nolint:golint
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type Team struct {
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Team *model.Team
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Id string
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Channels []*model.Channel
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MoreChannels []*model.Channel
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Users map[string]*model.User
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}
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type MMClient struct {
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sync.RWMutex
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*Credentials
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Team *Team
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OtherTeams []*Team
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Client *model.Client4
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User *model.User
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Users map[string]*model.User
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MessageChan chan *Message
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WsClient *websocket.Conn
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WsQuit bool
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WsAway bool
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WsConnected bool
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WsSequence int64
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WsPingChan chan *model.WebSocketResponse
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ServerVersion string
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OnWsConnect func()
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logger *logrus.Entry
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rootLogger *logrus.Logger
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lruCache *lru.Cache
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allevents bool
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}
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// New will instantiate a new Matterclient with the specified login details without connecting.
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func New(login string, pass string, team string, server string) *MMClient {
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rootLogger := logrus.New()
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rootLogger.SetFormatter(&prefixed.TextFormatter{
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PrefixPadding: 13,
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DisableColors: true,
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})
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cred := &Credentials{
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Login: login,
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Pass: pass,
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Team: team,
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Server: server,
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}
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cache, _ := lru.New(500)
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return &MMClient{
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Credentials: cred,
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MessageChan: make(chan *Message, 100),
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Users: make(map[string]*model.User),
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rootLogger: rootLogger,
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lruCache: cache,
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logger: rootLogger.WithFields(logrus.Fields{"prefix": "matterclient"}),
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}
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}
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// SetDebugLog activates debugging logging on all Matterclient log output.
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func (m *MMClient) SetDebugLog() {
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m.rootLogger.SetFormatter(&prefixed.TextFormatter{
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PrefixPadding: 13,
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DisableColors: true,
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FullTimestamp: false,
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ForceFormatting: true,
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})
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}
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// SetLogLevel tries to parse the specified level and if successful sets
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// the log level accordingly. Accepted levels are: 'debug', 'info', 'warn',
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// 'error', 'fatal' and 'panic'.
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func (m *MMClient) SetLogLevel(level string) {
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l, err := logrus.ParseLevel(level)
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if err != nil {
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m.logger.Warnf("Failed to parse specified log-level '%s': %#v", level, err)
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} else {
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m.rootLogger.SetLevel(l)
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}
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}
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func (m *MMClient) EnableAllEvents() {
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m.allevents = true
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}
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// Login tries to connect the client with the loging details with which it was initialized.
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func (m *MMClient) Login() error {
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// check if this is a first connect or a reconnection
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firstConnection := true
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if m.WsConnected {
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firstConnection = false
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}
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m.WsConnected = false
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if m.WsQuit {
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return nil
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}
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b := &backoff.Backoff{
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Min: time.Second,
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Max: 5 * time.Minute,
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Jitter: true,
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}
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// do initialization setup
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if err := m.initClient(firstConnection, b); err != nil {
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return err
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}
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if err := m.doLogin(firstConnection, b); err != nil {
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return err
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}
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if err := m.initUser(); err != nil {
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return err
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}
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if m.Team == nil {
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validTeamNames := make([]string, len(m.OtherTeams))
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for i, t := range m.OtherTeams {
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validTeamNames[i] = t.Team.Name
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}
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return fmt.Errorf("Team '%s' not found in %v", m.Credentials.Team, validTeamNames)
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}
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m.wsConnect()
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return nil
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}
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// Logout disconnects the client from the chat server.
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func (m *MMClient) Logout() error {
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m.logger.Debugf("logout as %s (team: %s) on %s", m.Credentials.Login, m.Credentials.Team, m.Credentials.Server)
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m.WsQuit = true
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m.WsClient.Close()
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m.WsClient.UnderlyingConn().Close()
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if strings.Contains(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN) {
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m.logger.Debug("Not invalidating session in logout, credential is a token")
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return nil
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}
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_, resp := m.Client.Logout()
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if resp.Error != nil {
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return resp.Error
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}
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return nil
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}
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// WsReceiver implements the core loop that manages the connection to the chat server. In
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// case of a disconnect it will try to reconnect. A call to this method is blocking until
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// the 'WsQuite' field of the MMClient object is set to 'true'.
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func (m *MMClient) WsReceiver() {
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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 m.WsQuit {
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m.logger.Debug("exiting WsReceiver")
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return
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}
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if !m.WsConnected {
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time.Sleep(time.Millisecond * 100)
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continue
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}
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if _, rawMsg, err = m.WsClient.ReadMessage(); err != nil {
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m.logger.Error("error:", err)
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// reconnect
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m.wsConnect()
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}
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var event model.WebSocketEvent
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if err := json.Unmarshal(rawMsg, &event); err == nil && event.IsValid() {
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m.logger.Debugf("WsReceiver event: %#v", event)
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msg := &Message{Raw: &event, Team: m.Credentials.Team}
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m.parseMessage(msg)
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// check if we didn't empty the message
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if msg.Text != "" {
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m.MessageChan <- msg
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continue
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}
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// if we have file attached but the message is empty, also send it
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if msg.Post != nil {
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if msg.Text != "" || len(msg.Post.FileIds) > 0 || msg.Post.Type == "slack_attachment" {
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m.MessageChan <- msg
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continue
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}
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}
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if m.allevents {
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m.MessageChan <- msg
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continue
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}
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switch msg.Raw.Event {
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case model.WEBSOCKET_EVENT_USER_ADDED,
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model.WEBSOCKET_EVENT_USER_REMOVED,
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model.WEBSOCKET_EVENT_CHANNEL_CREATED,
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model.WEBSOCKET_EVENT_CHANNEL_DELETED:
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m.MessageChan <- msg
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continue
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}
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}
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var response model.WebSocketResponse
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if err := json.Unmarshal(rawMsg, &response); err == nil && response.IsValid() {
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m.logger.Debugf("WsReceiver response: %#v", response)
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m.parseResponse(response)
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}
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}
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}
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// StatusLoop implements a ping-cycle that ensures that the connection to the chat servers
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// remains alive. In case of a disconnect it will try to reconnect. A call to this method
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// is blocking until the 'WsQuite' field of the MMClient object is set to 'true'.
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func (m *MMClient) StatusLoop() {
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retries := 0
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backoff := time.Second * 60
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if m.OnWsConnect != nil {
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m.OnWsConnect()
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}
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m.logger.Debug("StatusLoop:", m.OnWsConnect != nil)
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for {
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if m.WsQuit {
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return
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}
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if m.WsConnected {
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if err := m.checkAlive(); err != nil {
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m.logger.Errorf("Connection is not alive: %#v", err)
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}
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select {
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case <-m.WsPingChan:
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m.logger.Debug("WS PONG received")
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backoff = time.Second * 60
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case <-time.After(time.Second * 5):
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if retries > 3 {
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m.logger.Debug("StatusLoop() timeout")
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m.Logout()
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m.WsQuit = false
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err := m.Login()
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if err != nil {
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m.logger.Errorf("Login failed: %#v", err)
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break
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}
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if m.OnWsConnect != nil {
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m.OnWsConnect()
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}
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go m.WsReceiver()
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} else {
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retries++
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backoff = time.Second * 5
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}
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}
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}
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time.Sleep(backoff)
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}
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}
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