feat: implement bidirectional message bridge system with XMPP-Mattermost integration
This commit implements a comprehensive bridge-agnostic message routing system that enables real-time bidirectional message synchronization between XMPP and Mattermost platforms. Key features: - Bridge-agnostic message types and structures for extensibility - Central message bus system with publisher-subscriber pattern - Complete Bridge interface implementation for both XMPP and Mattermost - Message aggregation from multiple sources for scalability - Loop prevention mechanisms to avoid infinite message cycles - Buffered channels for high-performance message processing Architecture highlights: - Producer-consumer pattern for message routing between bridges - Thread-safe goroutine lifecycle management with context cancellation - Message handlers separated into dedicated files for maintainability - Support for future bridge implementations (Slack, Discord, etc.) - Markdown content standardization across all bridges Files added: - server/model/message.go: Core bridge-agnostic message structures - server/bridge/messagebus.go: Central message routing system - server/bridge/mattermost/message_handler.go: Mattermost-specific message processing - server/bridge/xmpp/message_handler.go: XMPP-specific message processing Files modified: - server/bridge/manager.go: Integration with message bus and routing - server/bridge/mattermost/bridge.go: Complete Bridge interface implementation - server/bridge/xmpp/bridge.go: Message aggregation and interface completion - server/model/bridge.go: Extended Bridge interface for bidirectional messaging - server/xmpp/client.go: Enhanced message listening with mellium.im/xmpp 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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parent
69a67704f4
commit
7b56cb34c6
9 changed files with 1119 additions and 41 deletions
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@ -18,6 +18,11 @@ import (
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"github.com/mattermost/mattermost/server/public/plugin"
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)
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const (
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// defaultMessageBufferSize is the buffer size for incoming message channels
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defaultMessageBufferSize = 1000
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)
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// xmppBridge handles syncing messages between Mattermost and XMPP
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type xmppBridge struct {
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logger logger.Logger
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@ -26,6 +31,11 @@ type xmppBridge struct {
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bridgeClient *xmppClient.Client // Main bridge XMPP client connection
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userManager pluginModel.BridgeUserManager
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// Message handling
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messageHandler *xmppMessageHandler
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userResolver *xmppUserResolver
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incomingMessages chan *pluginModel.DirectionalMessage
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// Connection management
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connected atomic.Bool
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ctx context.Context
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@ -44,16 +54,21 @@ type xmppBridge struct {
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func NewBridge(log logger.Logger, api plugin.API, kvstore kvstore.KVStore, cfg *config.Configuration) pluginModel.Bridge {
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ctx, cancel := context.WithCancel(context.Background())
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b := &xmppBridge{
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logger: log,
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api: api,
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kvstore: kvstore,
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ctx: ctx,
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cancel: cancel,
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channelMappings: make(map[string]string),
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config: cfg,
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userManager: bridge.NewUserManager("xmpp", log),
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logger: log,
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api: api,
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kvstore: kvstore,
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ctx: ctx,
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cancel: cancel,
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channelMappings: make(map[string]string),
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config: cfg,
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userManager: bridge.NewUserManager("xmpp", log),
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incomingMessages: make(chan *pluginModel.DirectionalMessage, defaultMessageBufferSize),
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}
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// Initialize handlers after bridge is created
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b.messageHandler = newMessageHandler(b)
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b.userResolver = newUserResolver(b)
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// Initialize XMPP client with configuration
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if cfg.EnableSync && cfg.XMPPServerURL != "" && cfg.XMPPUsername != "" && cfg.XMPPPassword != "" {
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b.bridgeClient = b.createXMPPClient(cfg)
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@ -160,6 +175,9 @@ func (b *xmppBridge) Start() error {
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// Start connection monitor
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go b.connectionMonitor()
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// Start message aggregation
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go b.startMessageAggregation()
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b.logger.LogInfo("Mattermost to XMPP bridge started successfully")
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return nil
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}
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@ -533,3 +551,67 @@ func (b *xmppBridge) GetRoomMapping(roomID string) (string, error) {
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func (b *xmppBridge) GetUserManager() pluginModel.BridgeUserManager {
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return b.userManager
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}
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// startMessageAggregation starts the message aggregation goroutine
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func (b *xmppBridge) startMessageAggregation() {
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b.logger.LogDebug("Starting XMPP message aggregation")
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for {
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select {
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case <-b.ctx.Done():
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b.logger.LogDebug("Stopping XMPP message aggregation")
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return
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default:
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// Aggregate messages from bridge client if available
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if b.bridgeClient != nil {
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clientChannel := b.bridgeClient.GetMessageChannel()
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select {
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case msg, ok := <-clientChannel:
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if !ok {
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b.logger.LogDebug("Bridge client message channel closed")
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continue
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}
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// Forward to our bridge's message channel
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select {
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case b.incomingMessages <- msg:
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b.logger.LogDebug("Message forwarded from bridge client",
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"source_channel", msg.SourceChannelID,
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"user_id", msg.SourceUserID)
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default:
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b.logger.LogWarn("Bridge message channel full, dropping message",
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"source_channel", msg.SourceChannelID,
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"user_id", msg.SourceUserID)
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}
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case <-b.ctx.Done():
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return
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default:
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// No messages available, continue with other potential sources
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}
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}
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// TODO: Add aggregation from user client channels when implemented
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// This is where we would aggregate from multiple XMPP user connections
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}
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}
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}
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// GetMessageChannel returns the channel for incoming messages from XMPP
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func (b *xmppBridge) GetMessageChannel() <-chan *pluginModel.DirectionalMessage {
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return b.incomingMessages
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}
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// SendMessage sends a message to an XMPP room
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func (b *xmppBridge) SendMessage(msg *pluginModel.BridgeMessage) error {
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return b.messageHandler.sendMessageToXMPP(msg)
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}
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// GetMessageHandler returns the message handler for this bridge
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func (b *xmppBridge) GetMessageHandler() pluginModel.MessageHandler {
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return b.messageHandler
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}
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// GetUserResolver returns the user resolver for this bridge
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func (b *xmppBridge) GetUserResolver() pluginModel.UserResolver {
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return b.userResolver
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}
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166
server/bridge/xmpp/message_handler.go
Normal file
166
server/bridge/xmpp/message_handler.go
Normal file
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@ -0,0 +1,166 @@
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package xmpp
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import (
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"fmt"
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"strings"
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"github.com/mattermost/mattermost-plugin-bridge-xmpp/server/logger"
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pluginModel "github.com/mattermost/mattermost-plugin-bridge-xmpp/server/model"
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xmppClient "github.com/mattermost/mattermost-plugin-bridge-xmpp/server/xmpp"
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)
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// xmppMessageHandler handles incoming messages for the XMPP bridge
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type xmppMessageHandler struct {
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bridge *xmppBridge
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logger logger.Logger
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}
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// newMessageHandler creates a new XMPP message handler
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func newMessageHandler(bridge *xmppBridge) *xmppMessageHandler {
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return &xmppMessageHandler{
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bridge: bridge,
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logger: bridge.logger,
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}
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}
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// ProcessMessage processes an incoming message for the XMPP bridge
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func (h *xmppMessageHandler) ProcessMessage(msg *pluginModel.DirectionalMessage) error {
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h.logger.LogDebug("Processing message for XMPP bridge",
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"source_bridge", msg.SourceBridge,
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"direction", msg.Direction,
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"channel_id", msg.SourceChannelID)
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// Skip messages that originated from XMPP to prevent loops
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if msg.SourceBridge == "xmpp" {
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h.logger.LogDebug("Skipping XMPP-originated message to prevent loop")
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return nil
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}
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// For incoming messages to XMPP, we send them to XMPP rooms
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if msg.Direction == pluginModel.DirectionIncoming {
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return h.sendMessageToXMPP(msg.BridgeMessage)
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}
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h.logger.LogDebug("Ignoring outgoing message for XMPP bridge")
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return nil
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}
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// CanHandleMessage determines if this handler can process the message
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func (h *xmppMessageHandler) CanHandleMessage(msg *pluginModel.BridgeMessage) bool {
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// XMPP bridge can handle text messages that didn't originate from XMPP
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return msg.MessageType == "text" && msg.SourceBridge != "xmpp"
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}
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// GetSupportedMessageTypes returns the message types this handler supports
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func (h *xmppMessageHandler) GetSupportedMessageTypes() []string {
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return []string{"text"}
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}
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// sendMessageToXMPP sends a message to an XMPP room
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func (h *xmppMessageHandler) sendMessageToXMPP(msg *pluginModel.BridgeMessage) error {
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if h.bridge.bridgeClient == nil {
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return fmt.Errorf("XMPP client not initialized")
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}
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if !h.bridge.connected.Load() {
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return fmt.Errorf("not connected to XMPP server")
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}
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// Get the XMPP room JID from the channel mapping
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roomJID, err := h.bridge.GetChannelMapping(msg.SourceChannelID)
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if err != nil {
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return fmt.Errorf("failed to get room mapping: %w", err)
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}
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if roomJID == "" {
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return fmt.Errorf("channel is not mapped to any XMPP room")
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}
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// Format the message content with user information
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content := h.formatMessageContent(msg)
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// Create XMPP message request
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req := xmppClient.MessageRequest{
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RoomJID: roomJID,
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Message: content,
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}
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// Send the message
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_, err = h.bridge.bridgeClient.SendMessage(req)
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if err != nil {
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return fmt.Errorf("failed to send message to XMPP room: %w", err)
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}
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h.logger.LogDebug("Message sent to XMPP room",
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"channel_id", msg.SourceChannelID,
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"room_jid", roomJID,
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"content_length", len(content))
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return nil
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}
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// formatMessageContent formats the message content for XMPP
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func (h *xmppMessageHandler) formatMessageContent(msg *pluginModel.BridgeMessage) string {
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// For messages from other bridges, prefix with the user name
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if msg.SourceUserName != "" {
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return fmt.Sprintf("<%s> %s", msg.SourceUserName, msg.Content)
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}
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return msg.Content
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}
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// xmppUserResolver handles user resolution for the XMPP bridge
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type xmppUserResolver struct {
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bridge *xmppBridge
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logger logger.Logger
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}
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// newUserResolver creates a new XMPP user resolver
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func newUserResolver(bridge *xmppBridge) *xmppUserResolver {
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return &xmppUserResolver{
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bridge: bridge,
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logger: bridge.logger,
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}
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}
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// ResolveUser converts an external user ID to an ExternalUser
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func (r *xmppUserResolver) ResolveUser(externalUserID string) (*pluginModel.ExternalUser, error) {
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r.logger.LogDebug("Resolving XMPP user", "user_id", externalUserID)
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// For XMPP, the external user ID is typically the full JID
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return &pluginModel.ExternalUser{
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BridgeType: "xmpp",
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ExternalUserID: externalUserID,
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DisplayName: r.GetDisplayName(externalUserID),
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MattermostUserID: "", // Will be resolved by user mapping system
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}, nil
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}
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// FormatUserMention formats a user mention for Markdown content
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func (r *xmppUserResolver) FormatUserMention(user *pluginModel.ExternalUser) string {
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// For XMPP, we can format mentions as simple text with the display name
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return fmt.Sprintf("@%s", user.DisplayName)
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}
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// GetDisplayName extracts display name from external user ID
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func (r *xmppUserResolver) GetDisplayName(externalUserID string) string {
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// For XMPP JIDs, extract the local part or resource as display name
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// Format: user@domain/resource -> use resource or user
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if len(externalUserID) == 0 {
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return "Unknown User"
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}
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// Try to parse as JID and extract meaningful display name
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parts := strings.Split(externalUserID, "/")
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if len(parts) > 1 {
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// Has resource part, use it as display name
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return parts[1]
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}
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// No resource, try to extract local part from user@domain
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atIndex := strings.Index(externalUserID, "@")
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if atIndex > 0 {
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return externalUserID[:atIndex]
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}
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// Fallback to the full ID
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return externalUserID
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}
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