/**
* Gets an <tt>Endpoint</tt> participating in this <tt>Conference</tt> which has a specific
* identifier/ID. If an <tt>Endpoint</tt> participating in this <tt>Conference</tt> with the
* specified <tt>id</tt> does not exist at the time the method is invoked, the method optionally
* initializes a new <tt>Endpoint</tt> instance with the specified <tt>id</tt> and adds it to the
* list of <tt>Endpoint</tt>s participating in this <tt>Conference</tt>.
*
* @param id the identifier/ID of the <tt>Endpoint</tt> which is to be returned
* @return an <tt>Endpoint</tt> participating in this <tt>Conference</tt> which has the specified
* <tt>id</tt> or <tt>null</tt> if there is no such <tt>Endpoint</tt> and <tt>create</tt>
* equals <tt>false</tt>
*/
private Endpoint getEndpoint(String id, boolean create) {
Endpoint endpoint = null;
boolean changed = false;
synchronized (endpoints) {
for (Iterator<WeakReference<Endpoint>> i = endpoints.iterator(); i.hasNext(); ) {
Endpoint e = i.next().get();
if (e == null) {
i.remove();
changed = true;
} else if (e.getID().equals(id)) {
endpoint = e;
}
}
if (create && endpoint == null) {
endpoint = new Endpoint(id, this);
// The propertyChangeListener will weakly reference this
// Conference and will unregister itself from the endpoint
// sooner or later.
endpoint.addPropertyChangeListener(propertyChangeListener);
endpoints.add(new WeakReference<>(endpoint));
changed = true;
EventAdmin eventAdmin = videobridge.getEventAdmin();
if (eventAdmin != null) eventAdmin.sendEvent(EventFactory.endpointCreated(endpoint));
}
}
if (changed) firePropertyChange(ENDPOINTS_PROPERTY_NAME, null, null);
return endpoint;
}
/**
* Initializes a new <tt>Conference</tt> instance which is to represent a conference in the terms
* of Jitsi Videobridge which has a specific (unique) ID and is managed by a conference focus with
* a specific JID.
*
* @param videobridge the <tt>Videobridge</tt> on which the new <tt>Conference</tt> instance is to
* be initialized
* @param id the (unique) ID of the new instance to be initialized
* @param focus the JID of the conference focus who has requested the initialization of the new
* instance and from whom further/future requests to manage the new instance must come or they
* will be ignored. Pass <tt>null</tt> to override this safety check.
*/
public Conference(Videobridge videobridge, String id, String focus) {
if (videobridge == null) throw new NullPointerException("videobridge");
if (id == null) throw new NullPointerException("id");
this.videobridge = videobridge;
this.id = id;
this.focus = focus;
this.lastKnownFocus = focus;
speechActivity = new ConferenceSpeechActivity(this);
speechActivity.addPropertyChangeListener(propertyChangeListener);
EventAdmin eventAdmin = videobridge.getEventAdmin();
if (eventAdmin != null) eventAdmin.sendEvent(EventFactory.conferenceCreated(this));
}
/**
* Expires this <tt>Conference</tt>, its <tt>Content</tt>s and their respective <tt>Channel</tt>s.
* Releases the resources acquired by this instance throughout its life time and prepares it to be
* garbage collected.
*/
public void expire() {
synchronized (this) {
if (expired) return;
else expired = true;
}
EventAdmin eventAdmin = videobridge.getEventAdmin();
if (eventAdmin != null) eventAdmin.sendEvent(EventFactory.conferenceExpired(this));
setRecording(false);
if (recorderEventHandler != null) {
recorderEventHandler.close();
recorderEventHandler = null;
}
Videobridge videobridge = getVideobridge();
try {
videobridge.expireConference(this);
} finally {
// Expire the Contents of this Conference.
for (Content content : getContents()) {
try {
content.expire();
} catch (Throwable t) {
logger.warn(
"Failed to expire content " + content.getName() + " of conference " + getID() + "!",
t);
if (t instanceof InterruptedException) Thread.currentThread().interrupt();
else if (t instanceof ThreadDeath) throw (ThreadDeath) t;
}
}
// Close the transportManagers of this Conference. Normally, there
// will be no TransportManager left to close at this point because
// all Channels have expired and the last Channel to be removed from
// a TransportManager closes the TransportManager. However, a
// Channel may have expired before it has learned of its
// TransportManager and then the TransportManager will not close.
closeTransportManagers();
if (logger.isInfoEnabled()) {
logger.info(
"Expired conference " + getID() + ". " + videobridge.getConferenceCountString());
}
}
}
/** Handles XEP-0337 "log" extensions. */
private void handleLogRequest(LogPacketExtension log, String jid) {
JitsiMeetConference conference = getConferenceForMucJid(jid);
if (conference == null) {
logger.debug("Room not found for JID: " + jid);
return;
}
Participant participant = conference.findParticipantForRoomJid(jid);
if (participant == null) {
logger.info("Ignoring log request from an unknown JID: " + jid);
return;
}
EventAdmin eventAdmin = FocusBundleActivator.getEventAdmin();
if (eventAdmin == null) return;
if (LogUtil.LOG_ID_PC_STATS.equals(log.getID())) {
String content = LogUtil.getContent(log);
if (content != null) {
ColibriConference colibriConference = conference.getColibriConference();
if (colibriConference != null) {
Event event =
EventFactory.peerConnectionStats(
colibriConference.getConferenceId(), participant.getEndpointId(), content);
if (event != null) eventAdmin.sendEvent(event);
} else {
logger.warn("Unhandled log request" + " - no valid Colibri conference");
}
}
} else if (logger.isInfoEnabled()) {
logger.info("Ignoring log request with an unknown ID:" + log.getID());
}
}
/**
* Updates an <tt>Endpoint</tt> of this <tt>Conference</tt> with the information contained in
* <tt>colibriEndpoint</tt>. The ID of <tt>colibriEndpoint</tt> is used to select the
* <tt>Endpoint</tt> to update.
*
* @param colibriEndpoint a <tt>ColibriConferenceIQ.Endpoint</tt> instance that contains
* information to be set on an <tt>Endpoint</tt> instance of this <tt>Conference</tt>.
*/
void updateEndpoint(ColibriConferenceIQ.Endpoint colibriEndpoint) {
String id = colibriEndpoint.getId();
if (id != null) {
Endpoint endpoint = getEndpoint(id);
if (endpoint != null) {
String oldDisplayName = endpoint.getDisplayName();
String newDisplayName = colibriEndpoint.getDisplayName();
if ((oldDisplayName == null && newDisplayName != null)
|| (oldDisplayName != null && !oldDisplayName.equals(newDisplayName))) {
endpoint.setDisplayName(newDisplayName);
if (isRecording() && endpointRecorder != null) endpointRecorder.updateEndpoint(endpoint);
EventAdmin eventAdmin = getVideobridge().getEventAdmin();
if (eventAdmin != null) {
eventAdmin.sendEvent(EventFactory.endpointDisplayNameChanged(endpoint));
}
}
}
}
}
/**
* Handles presence stanzas
*
* @param presence
*/
private void handlePresence(Presence presence) {
// unavailable is sent when user leaves the room
if (!presence.isAvailable()) {
return;
}
String from = presence.getFrom();
JitsiMeetConference conference = getConferenceForMucJid(from);
if (conference == null) {
if (logger.isDebugEnabled()) {
logger.debug("Room not found for JID: " + from);
}
return;
}
ChatRoomMemberRole role = conference.getRoleForMucJid(from);
if (role != null && role.compareTo(ChatRoomMemberRole.MODERATOR) < 0) {
StartMutedPacketExtension ext =
(StartMutedPacketExtension)
presence.getExtension(
StartMutedPacketExtension.ELEMENT_NAME, StartMutedPacketExtension.NAMESPACE);
if (ext != null) {
boolean[] startMuted = {ext.getAudioMuted(), ext.getVideoMuted()};
conference.setStartMuted(startMuted);
}
}
Participant participant = conference.findParticipantForRoomJid(from);
ColibriConference colibriConference = conference.getColibriConference();
if (participant != null && colibriConference != null) {
// Check if this conference is valid
String conferenceId = colibriConference.getConferenceId();
if (StringUtils.isNullOrEmpty(conferenceId)) {
logger.error("Unable to send DisplayNameChanged event" + " - no conference id");
return;
}
// Check for changes to the display name
String oldDisplayName = participant.getDisplayName();
String newDisplayName = null;
for (PacketExtension pe : presence.getExtensions()) {
if (pe instanceof Nick) {
newDisplayName = ((Nick) pe).getName();
break;
}
}
if (!Objects.equals(oldDisplayName, newDisplayName)) {
participant.setDisplayName(newDisplayName);
EventAdmin eventAdmin = FocusBundleActivator.getEventAdmin();
if (eventAdmin != null) {
// Prevent NPE when adding to event hashtable
if (newDisplayName == null) {
newDisplayName = "";
}
eventAdmin.sendEvent(
EventFactory.endpointDisplayNameChanged(
conferenceId, participant.getEndpointId(), newDisplayName));
}
}
}
}