/**
* Process list of event objects. Checks whether message source contact already exist for this
* event object, if yes just update it with the new values (not sure whether we should do this, as
* it may bring old messages) and if status of provider is changed, init its details, updates its
* capabilities. It still adds the found messages source contact to the list of the new contacts,
* as later we will detect this and fire update event. If nothing found a new contact is created.
*
* @param res list of event
* @param cachedRecentMessages list of newly created source contacts or already existed but
* updated with corresponding event object
* @param isStatusChanged whether provider status changed and we are processing
*/
private void processEventObjects(
Collection<EventObject> res,
List<ComparableEvtObj> cachedRecentMessages,
boolean isStatusChanged) {
for (EventObject obj : res) {
ComparableEvtObj oldMsg = findRecentMessage(obj, recentMessages);
if (oldMsg != null) {
oldMsg.update(obj); // update
if (isStatusChanged && recentQuery != null) recentQuery.updateCapabilities(oldMsg, obj);
// we still add it to cachedRecentMessages
// later we will find it is duplicate and will fire
// update event
if (!cachedRecentMessages.contains(oldMsg)) cachedRecentMessages.add(oldMsg);
continue;
}
oldMsg = findRecentMessage(obj, cachedRecentMessages);
if (oldMsg == null) {
oldMsg = new ComparableEvtObj(obj);
if (isStatusChanged && recentQuery != null) recentQuery.updateCapabilities(oldMsg, obj);
cachedRecentMessages.add(oldMsg);
}
}
}
/**
* Permanently removes locally stored message history for the metacontact, remove any recent
* contacts if any.
*/
public void eraseLocallyStoredHistory(MetaContact contact) throws IOException {
List<ComparableEvtObj> toRemove = null;
synchronized (recentMessages) {
toRemove = new ArrayList<ComparableEvtObj>();
Iterator<Contact> iter = contact.getContacts();
while (iter.hasNext()) {
Contact item = iter.next();
String id = item.getAddress();
ProtocolProviderService provider = item.getProtocolProvider();
for (ComparableEvtObj msc : recentMessages) {
if (msc.getProtocolProviderService().equals(provider)
&& msc.getContactAddress().equals(id)) {
toRemove.add(msc);
}
}
}
recentMessages.removeAll(toRemove);
}
if (recentQuery != null) {
for (ComparableEvtObj msc : toRemove) {
recentQuery.fireContactRemoved(msc);
}
}
}
/**
* Adds <tt>WebRtcDataStreamListener</tt> to the list of listeners.
*
* @param listener the <tt>WebRtcDataStreamListener</tt> to be added to the listeners list.
*/
public void addChannelListener(WebRtcDataStreamListener listener) {
if (listener == null) {
throw new NullPointerException("listener");
} else {
synchronized (listeners) {
if (!listeners.contains(listener)) {
listeners.add(listener);
}
}
}
}
/**
* Searches for contact ids in history of recent messages.
*
* @param provider
* @param after
* @return
*/
List<String> getRecentContactIDs(String provider, Date after) {
List<String> res = new ArrayList<String>();
try {
History history = getHistory();
if (history != null) {
Iterator<HistoryRecord> recs = history.getReader().findLast(NUMBER_OF_MSGS_IN_HISTORY);
SimpleDateFormat sdf = new SimpleDateFormat(HistoryService.DATE_FORMAT);
while (recs.hasNext()) {
HistoryRecord hr = recs.next();
String contact = null;
String recordProvider = null;
Date timestamp = null;
for (int i = 0; i < hr.getPropertyNames().length; i++) {
String propName = hr.getPropertyNames()[i];
if (propName.equals(STRUCTURE_NAMES[0])) recordProvider = hr.getPropertyValues()[i];
else if (propName.equals(STRUCTURE_NAMES[1])) contact = hr.getPropertyValues()[i];
else if (propName.equals(STRUCTURE_NAMES[2])) {
try {
timestamp = sdf.parse(hr.getPropertyValues()[i]);
} catch (ParseException e) {
timestamp = new Date(Long.parseLong(hr.getPropertyValues()[i]));
}
}
}
if (recordProvider == null || contact == null) continue;
if (after != null && timestamp != null && timestamp.before(after)) continue;
if (recordProvider.equals(provider)) res.add(contact);
}
}
} catch (IOException ex) {
logger.error("cannot create recent_messages history", ex);
}
return res;
}
/**
* Gets the <tt>Endpoint</tt>s participating in/contributing to this <tt>Conference</tt>.
*
* @return the <tt>Endpoint</tt>s participating in/contributing to this <tt>Conference</tt>
*/
public List<Endpoint> getEndpoints() {
List<Endpoint> endpoints;
boolean changed = false;
synchronized (this.endpoints) {
endpoints = new ArrayList<>(this.endpoints.size());
for (Iterator<WeakReference<Endpoint>> i = this.endpoints.iterator(); i.hasNext(); ) {
Endpoint endpoint = i.next().get();
if (endpoint == null) {
i.remove();
changed = true;
} else {
endpoints.add(endpoint);
}
}
}
if (changed) firePropertyChange(ENDPOINTS_PROPERTY_NAME, null, null);
return endpoints;
}
/**
* Gets a <tt>Content</tt> of this <tt>Conference</tt> which has a specific name. If a
* <tt>Content</tt> of this <tt>Conference</tt> with the specified <tt>name</tt> does not exist at
* the time the method is invoked, the method initializes a new <tt>Content</tt> instance with the
* specified <tt>name</tt> and adds it to the list of <tt>Content</tt>s of this
* <tt>Conference</tt>.
*
* @param name the name of the <tt>Content</tt> which is to be returned
* @return a <tt>Content</tt> of this <tt>Conference</tt> which has the specified <tt>name</tt>
*/
public Content getOrCreateContent(String name) {
Content content;
synchronized (contents) {
for (Content aContent : contents) {
if (aContent.getName().equals(name)) {
aContent.touch(); // It seems the content is still active.
return aContent;
}
}
content = new Content(this, name);
if (isRecording()) {
content.setRecording(true, getRecordingPath());
}
contents.add(content);
}
if (logger.isInfoEnabled()) {
/*
* The method Videobridge.getChannelCount() should better be
* executed outside synchronized blocks in order to reduce the risks
* of causing deadlocks.
*/
Videobridge videobridge = getVideobridge();
logger.info(
"Created content "
+ name
+ " of conference "
+ getID()
+ ". "
+ videobridge.getConferenceCountString());
}
return content;
}
/**
* A provider has been removed.
*
* @param provider the ProtocolProviderService that has been unregistered.
*/
void handleProviderRemoved(ProtocolProviderService provider) {
// lets remove the recent messages for this provider, and update
// with recent messages for the available providers
synchronized (recentMessages) {
if (provider != null) {
List<ComparableEvtObj> removedItems = new ArrayList<ComparableEvtObj>();
for (ComparableEvtObj msc : recentMessages) {
if (msc.getProtocolProviderService().equals(provider)) removedItems.add(msc);
}
recentMessages.removeAll(removedItems);
if (!recentMessages.isEmpty())
oldestRecentMessage = recentMessages.get(recentMessages.size() - 1).getTimestamp();
else oldestRecentMessage = null;
if (recentQuery != null) {
for (ComparableEvtObj msc : removedItems) {
recentQuery.fireContactRemoved(msc);
}
}
}
// handleProviderRemoved can be invoked due to stopped
// history service, if this is the case we do not want to
// update messages
if (!this.messageHistoryService.isHistoryLoggingEnabled()) return;
// lets do the same as we enable provider
// for all registered providers and finally fire events
List<ComparableEvtObj> contactsToAdd = new ArrayList<ComparableEvtObj>();
for (ProtocolProviderService pps : messageHistoryService.getCurrentlyAvailableProviders()) {
contactsToAdd.addAll(getCachedRecentMessages(pps, true));
}
addNewRecentMessages(contactsToAdd);
}
}
/**
* Handles new events.
*
* @param obj the event object
* @param provider the provider
* @param id the id of the source of the event
*/
private void handle(EventObject obj, ProtocolProviderService provider, String id) {
// check if provider - contact exist update message content
synchronized (recentMessages) {
ComparableEvtObj existingMsc = null;
for (ComparableEvtObj msc : recentMessages) {
if (msc.getProtocolProviderService().equals(provider)
&& msc.getContactAddress().equals(id)) {
// update
msc.update(obj);
updateRecentMessageToHistory(msc);
existingMsc = msc;
}
}
if (existingMsc != null) {
Collections.sort(recentMessages);
oldestRecentMessage = recentMessages.get(recentMessages.size() - 1).getTimestamp();
if (recentQuery != null) {
recentQuery.updateContact(existingMsc, existingMsc.getEventObject());
recentQuery.fireContactChanged(existingMsc);
}
return;
}
// if missing create source contact
// and update recent messages, trim and sort
MessageSourceContact newSourceContact =
new MessageSourceContact(obj, MessageSourceService.this);
newSourceContact.initDetails(obj);
// we have already checked for duplicate
ComparableEvtObj newMsg = new ComparableEvtObj(obj);
recentMessages.add(newMsg);
Collections.sort(recentMessages);
oldestRecentMessage = recentMessages.get(recentMessages.size() - 1).getTimestamp();
// trim
List<ComparableEvtObj> removedItems = null;
if (recentMessages.size() > numberOfMessages) {
removedItems =
new ArrayList<ComparableEvtObj>(
recentMessages.subList(numberOfMessages, recentMessages.size()));
recentMessages.removeAll(removedItems);
}
// save
saveRecentMessageToHistory(newMsg);
// no query nothing to fire
if (recentQuery == null) return;
// now fire
if (removedItems != null) {
for (ComparableEvtObj msc : removedItems) {
recentQuery.fireContactRemoved(msc);
}
}
recentQuery.addQueryResult(newSourceContact);
}
}
/**
* Add the ComparableEvtObj, newly added will fire new, for existing fire update and when trimming
* the list to desired length fire remove for those that were removed
*
* @param contactsToAdd
*/
private void addNewRecentMessages(List<ComparableEvtObj> contactsToAdd) {
// now find object to fire new, and object to fire remove
// let us find duplicates and fire update
List<ComparableEvtObj> duplicates = new ArrayList<ComparableEvtObj>();
for (ComparableEvtObj msgToAdd : contactsToAdd) {
if (recentMessages.contains(msgToAdd)) {
duplicates.add(msgToAdd);
// save update
updateRecentMessageToHistory(msgToAdd);
}
}
recentMessages.removeAll(duplicates);
// now contacts to add has no duplicates, add them all
boolean changed = recentMessages.addAll(contactsToAdd);
if (changed) {
Collections.sort(recentMessages);
if (recentQuery != null) {
for (ComparableEvtObj obj : duplicates)
recentQuery.updateContact(obj, obj.getEventObject());
}
}
if (!recentMessages.isEmpty())
oldestRecentMessage = recentMessages.get(recentMessages.size() - 1).getTimestamp();
// trim
List<ComparableEvtObj> removedItems = null;
if (recentMessages.size() > numberOfMessages) {
removedItems =
new ArrayList<ComparableEvtObj>(
recentMessages.subList(numberOfMessages, recentMessages.size()));
recentMessages.removeAll(removedItems);
}
if (recentQuery != null) {
// now fire, removed for all that were in the list
// and now are removed after trim
if (removedItems != null) {
for (ComparableEvtObj msc : removedItems) {
if (!contactsToAdd.contains(msc)) recentQuery.fireContactRemoved(msc);
}
}
// fire new for all that were added, and not removed after trim
for (ComparableEvtObj msc : contactsToAdd) {
if ((removedItems == null || !removedItems.contains(msc)) && !duplicates.contains(msc)) {
MessageSourceContact newSourceContact =
new MessageSourceContact(msc.getEventObject(), MessageSourceService.this);
newSourceContact.initDetails(msc.getEventObject());
recentQuery.addQueryResult(newSourceContact);
}
}
// if recent messages were changed, indexes have change lets
// fire event for the last element which will reorder the whole
// group if needed.
if (changed) recentQuery.fireContactChanged(recentMessages.get(recentMessages.size() - 1));
}
}
/**
* Adds a specific <tt>UserCapsNodeListener</tt> to the list of <tt>UserCapsNodeListener</tt>s
* interested in events notifying about changes in the list of user caps nodes of this
* <tt>EntityCapsManager</tt>.
*
* @param listener the <tt>UserCapsNodeListener</tt> which is interested in events notifying about
* changes in the list of user caps nodes of this <tt>EntityCapsManager</tt>
*/
public void addUserCapsNodeListener(UserCapsNodeListener listener) {
if (listener == null) throw new NullPointerException("listener");
synchronized (userCapsNodeListeners) {
if (!userCapsNodeListeners.contains(listener)) userCapsNodeListeners.add(listener);
}
}