/**
* Utility method for getting actual channel bundle. If <tt>currentBundle</tt> is <tt>null</tt>
* then <tt>channels</tt> bundle is returned(and vice-versa). If both channel's and given bundle
* IDs are not null then they are compared and error is logged, but channel's bundle is returned
* in the last place anyway.
*/
private static String readChannelBundle(
ColibriConferenceIQ.ChannelCommon channel, String currentBundle) {
String channelBundle = channel.getChannelBundleId();
if (channelBundle == null) {
return currentBundle;
}
if (currentBundle == null) {
return channel.getChannelBundleId();
} else {
// Compare to detect problems
if (!currentBundle.equals(channelBundle)) {
logger.error("Replaced bundle: " + currentBundle + " with " + channelBundle);
}
return channelBundle;
}
}
/**
* Utility class for extracting info from responses received from the JVB and keeping track of
* conference state.
*
* @author Pawel Domas
*/
public class ColibriAnalyser {
/** The logger used by this instance. */
private static final Logger logger = Logger.getLogger(ColibriAnalyser.class);
/** Colibri IQ instance used to store conference state. */
private final ColibriConferenceIQ conferenceState;
/**
* Creates new instance of analyser that will used given Colibri IQ instance for storing
* conference state.
*
* @param conferenceStateHolder the Colibri IQ instance that will be used for storing conference
* state.
*/
public ColibriAnalyser(ColibriConferenceIQ conferenceStateHolder) {
this.conferenceState = conferenceStateHolder;
}
/**
* Processes channels allocation response from the JVB and stores info about new channels in
* {@link #conferenceState}.
*
* @param allocateResponse the Colibri IQ that describes JVB response to allocate request.
*/
public void processChannelAllocResp(ColibriConferenceIQ allocateResponse) {
String conferenceResponseID = allocateResponse.getID();
String colibriID = conferenceState.getID();
if (colibriID == null) conferenceState.setID(conferenceResponseID);
else if (!colibriID.equals(conferenceResponseID))
throw new IllegalStateException("conference.id");
/*
* XXX We must remember the JID of the Jitsi Videobridge because
* (1) we do not want to re-discover it in every method
* invocation on this Call instance and (2) we want to use one
* and the same for all CallPeers within this Call instance.
*/
conferenceState.setFrom(allocateResponse.getFrom());
for (ColibriConferenceIQ.Content contentResponse : allocateResponse.getContents()) {
String contentName = contentResponse.getName();
ColibriConferenceIQ.Content content = conferenceState.getOrCreateContent(contentName);
// FIXME: we do not check if allocated channel does not clash
// with any existing one
for (ColibriConferenceIQ.Channel channelResponse : contentResponse.getChannels()) {
content.addChannel(channelResponse);
}
for (ColibriConferenceIQ.SctpConnection sctpConnResponse :
contentResponse.getSctpConnections()) {
content.addSctpConnection(sctpConnResponse);
}
}
for (ColibriConferenceIQ.ChannelBundle bundle : allocateResponse.getChannelBundles()) {
conferenceState.addChannelBundle(bundle);
}
}
/**
* Utility method for extracting info about channels allocated from JVB response. FIXME: this
* might not work as expected when channels for multiple peers with single query were allocated.
*
* @param conferenceResponse JVB response to allocate channels request.
* @param peerContents list of peer media contents that has to be matched with allocated channels.
* @return the Colibri IQ that describes allocated channels.
*/
public static ColibriConferenceIQ getResponseContents(
ColibriConferenceIQ conferenceResponse, List<ContentPacketExtension> peerContents) {
ColibriConferenceIQ conferenceResult = new ColibriConferenceIQ();
conferenceResult.setFrom(conferenceResponse.getFrom());
conferenceResult.setID(conferenceResponse.getID());
// FIXME: we support single bundle for all channels
String bundleId = null;
for (ContentPacketExtension content : peerContents) {
MediaType mediaType = JingleUtils.getMediaType(content);
ColibriConferenceIQ.Content contentResponse =
conferenceResponse.getContent(mediaType.toString());
if (contentResponse != null) {
String contentName = contentResponse.getName();
ColibriConferenceIQ.Content contentResult = new ColibriConferenceIQ.Content(contentName);
conferenceResult.addContent(contentResult);
for (ColibriConferenceIQ.Channel channelResponse : contentResponse.getChannels()) {
contentResult.addChannel(channelResponse);
bundleId = readChannelBundle(channelResponse, bundleId);
}
for (ColibriConferenceIQ.SctpConnection sctpConnResponse :
contentResponse.getSctpConnections()) {
contentResult.addSctpConnection(sctpConnResponse);
bundleId = readChannelBundle(sctpConnResponse, bundleId);
}
}
}
// Copy only peer's bundle(JVB returns all bundles)
if (bundleId != null) {
for (ColibriConferenceIQ.ChannelBundle bundle : conferenceResponse.getChannelBundles()) {
if (bundleId.equals(bundle.getId())) {
conferenceResult.addChannelBundle(bundle);
break;
}
}
}
return conferenceResult;
}
/**
* Utility method for getting actual channel bundle. If <tt>currentBundle</tt> is <tt>null</tt>
* then <tt>channels</tt> bundle is returned(and vice-versa). If both channel's and given bundle
* IDs are not null then they are compared and error is logged, but channel's bundle is returned
* in the last place anyway.
*/
private static String readChannelBundle(
ColibriConferenceIQ.ChannelCommon channel, String currentBundle) {
String channelBundle = channel.getChannelBundleId();
if (channelBundle == null) {
return currentBundle;
}
if (currentBundle == null) {
return channel.getChannelBundleId();
} else {
// Compare to detect problems
if (!currentBundle.equals(channelBundle)) {
logger.error("Replaced bundle: " + currentBundle + " with " + channelBundle);
}
return channelBundle;
}
}
}