/** Start the thread that periodically updates the metadata. */ public void startUpdating() { if (update == true) { return; } final Sink metadataSink = new Sink(); try { metadataSink.OpenRBNBConnection(rbnbController.getRBNBConnectionString(), rbnbSinkName); } catch (SAPIException e) { log.error("Failed to connect to RBNB server: " + e.getMessage()); e.printStackTrace(); return; } updateMetadata(metadataSink); updateThread = new Thread("MetadataManager") { public void run() { log.info("RBNB Metadata thread is starting."); updateMetadataThread(metadataSink); metadataSink.CloseRBNBConnection(); channels.clear(); ctree = null; log.info("RBNB Metadata thread is stopping."); } }; update = true; updateThread.start(); }
private void testConnect() { try { // test the connection to the server Sink sink = new Sink(); sink.OpenRBNBConnection(getServer(), sinkName); connected = true; System.out.println( "DataVideoGather: Test connection made to server = " + getServer() + " as " + sinkName + "."); sink.CloseRBNBConnection(); } catch (SAPIException se) { se.printStackTrace(); } }
private ChannelTree getChannelTree(String pattern) { ChannelTree tr = null; try { sMap = new ChannelMap(); if ((pattern != null) && (pattern.length() > 0)) sMap.Add(pattern); sink.RequestRegistration(sMap); sMap = sink.Fetch(-1, sMap); tr = ChannelTree.createFromChannelMap(sMap); } catch (SAPIException se) { se.printStackTrace(); } return tr; }
public void appendChannelListFromPattern() { try { // Create a sink and connect: Sink sink = new Sink(); sink.OpenRBNBConnection(getServer(), sinkName); // get all the channel paths that match the pattern ChannelMap sMap = new ChannelMap(); sink.RequestRegistration(); sMap = sink.Fetch(-1, sMap); ChannelTree tree = ChannelTree.createFromChannelMap(sMap); Pattern p = Pattern.compile(channelPathPattern); // for each channel path, check match, collect matches... Iterator nodes = tree.iterator(); while (nodes.hasNext()) { ChannelTree.Node n = (ChannelTree.Node) nodes.next(); // System.out.println("Checking " + n.getFullName() + ";" + n.getName()); if (!includeHidden && n.getFullName().startsWith("_")) continue; if (n.getType() != ChannelTree.CHANNEL) continue; String name = n.getFullName(); Matcher m = p.matcher(name); if (m.matches()) { // System.out.println("Matches"); boolean isSource = false; ChannelTree.Node upNode = n.getParent(); while ((!isSource) || (upNode != null)) { if (upNode.getType() == ChannelTree.SOURCE) isSource = true; upNode = upNode.getParent(); } if (isSource) { // System.out.println("... and is a source."); channelPathList.add(n); } else { // System.out.println("... and is NOT a source."); } } } } catch (SAPIException se) { se.printStackTrace(); } } // appendChannelListFromPattern
public void appendChannelListFromString() { try { StringTokenizer st = new StringTokenizer(channelPathListString, ","); // Create a sink and connect: Sink sink = new Sink(); sink.OpenRBNBConnection(getServer(), sinkName); // get all the channel paths that match the pattern ChannelMap sMap = new ChannelMap(); sink.RequestRegistration(); sMap = sink.Fetch(-1, sMap); ChannelTree tree = ChannelTree.createFromChannelMap(sMap); Pattern p = Pattern.compile(channelPathPattern); // for each channel path, check match, collect matches... while (st.hasMoreTokens()) { String path = st.nextToken(); // System.out.println("Checking " + path); ChannelTree.Node n = tree.findNode(path); if (n == null) continue; if (n.getType() != ChannelTree.CHANNEL) continue; String name = n.getFullName(); // System.out.println("Found it..."); boolean isSource = false; ChannelTree.Node upNode = n.getParent(); while ((!isSource) || (upNode != null)) { if (upNode.getType() == ChannelTree.SOURCE) isSource = true; upNode = upNode.getParent(); } if (isSource) { // System.out.println("... and is a source."); channelPathList.add(n); } else { // System.out.println("... and is NOT a source."); } } // while next token } catch (SAPIException se) { se.printStackTrace(); } } // appendChannelListFromString
/** * Updates the metadata and posts it to listeners. It also notifies all threads waiting on this * object. * * @param metadataSink the RBNB sink to use for the server connection */ private synchronized void updateMetadata(Sink metadataSink) { // log.info("Updating channel listing at " + DataViewer.formatDate(System.currentTimeMillis // ())); Map<String, Channel> newChannels = new HashMap<String, Channel>(); ChannelTree channelTree; try { // create metadata channel tree channelTree = getChannelTree(metadataSink, newChannels); } catch (SAPIException e) { log.error("Failed to update metadata: " + e.getMessage() + "."); if (!metadataSink.VerifyConnection()) { log.error( "Metadata RBNB connection is severed, try to reconnect to " + rbnbController.getRBNBConnectionString() + "."); metadataSink.CloseRBNBConnection(); try { metadataSink.OpenRBNBConnection(rbnbController.getRBNBConnectionString(), "RDVMetadata"); } catch (SAPIException error) { log.error("Failed to connect to RBNB server: " + error.getMessage()); error.printStackTrace(); } } return; } if (LocalChannelManager.getInstance().hasChannels()) { ChannelTree localChannelTree = getLocalChannelTree(newChannels, channelTree); ctree = localChannelTree.merge(channelTree); } else { ctree = channelTree; } channels = newChannels; // notify metadata listeners fireMetadataUpdated(ctree); }
public void connect() { try { // Create a sink and connect: sink = new Sink(); sink.OpenRBNBConnection(getServer(), "ChannelListRequest"); connected = true; System.out.println( "ChannelList: Connection made to server = " + getServer() + " requesting channel list."); } catch (SAPIException se) { se.printStackTrace(); } }
/** * Get the metadata channel tree for the given <code>path</code>. This will populate the channel * map with channel objects derived from the metadata. This will recursively make requests for * child servers and plugins up to the maximum request depth of {@value #MAX_REQUEST_DEPTH}. * * @param sink sink the sink connection to the RBNB server * @param path the path for the desired metadata * @param channels the map to populate with channel objects * @param depth the depth of the request * @return the metadata channel tree for the given path * @throws SAPIException if a server error occurs * @see #MAX_REQUEST_DEPTH */ private ChannelTree getChannelTree( Sink sink, String path, Map<String, Channel> channels, int depth) throws SAPIException { depth++; ChannelTree ctree = ChannelTree.EMPTY_TREE; ChannelMap markerChannelMap = new ChannelMap(); ChannelMap cmap = new ChannelMap(); if (path == null) { path = ""; cmap.Add("..."); } else { cmap.Add(path + "/..."); } sink.RequestRegistration(cmap); cmap = sink.Fetch(FETCH_TIMEOUT, cmap); if (cmap.GetIfFetchTimedOut()) { log.error("Failed to get metadata. Fetch timed out."); return ctree; } ctree = ChannelTree.createFromChannelMap(cmap); // store user metadata in channel objects String[] channelList = cmap.GetChannelList(); for (int i = 0; i < channelList.length; i++) { int channelIndex = cmap.GetIndex(channelList[i]); if (channelIndex != -1) { ChannelTree.Node node = ctree.findNode(channelList[i]); String userMetadata = cmap.GetUserInfo(channelIndex); Channel channel = new RBNBChannel(node, userMetadata); channels.put(channelList[i], channel); // look for marker channels String mimeType = channel.getMetadata("mime"); if (mimeType != null && mimeType.compareToIgnoreCase(EventMarker.MIME_TYPE) == 0) { markerChannelMap.Add(node.getFullName()); } } } Iterator<?> it = ctree.iterator(); while (it.hasNext()) { ChannelTree.Node node = (ChannelTree.Node) it.next(); NodeTypeEnum type = node.getType(); // look for child servers or plugins and get their channels if ((type == ChannelTree.SERVER || type == ChannelTree.PLUGIN) && !path.startsWith(node.getFullName()) && depth < MAX_REQUEST_DEPTH) { ChannelTree childChannelTree = getChannelTree(sink, node.getFullName(), channels, depth); ctree = childChannelTree.merge(ctree); } } if (markerChannelMap.NumberOfChannels() > 0) { double markersDuration = System.currentTimeMillis() / 1000d; // request from start of marker channels to now sink.Request(markerChannelMap, 0, markersDuration, "absolute"); markerChannelMap = sink.Fetch(FETCH_TIMEOUT, markerChannelMap); if (!markerChannelMap.GetIfFetchTimedOut()) { // notify marker listeners fireMarkersUpdated(markerChannelMap); } else { log.error("Failed to get event markers. Fetched timed out."); } } return ctree; }
public void run() { if (debug) System.err.println("PIrun, sourceFolder: " + sourceFolder + ", sName: " + sName); PlugInChannelMap picm = new PlugInChannelMap(); plugin = new PlugIn(); try { plugin.OpenRBNBConnection(rbnbServer, sName); sink = new Sink(); sink.OpenRBNBConnection(rbnbServer, sinkName); } catch (Exception e) { System.err.println("Error on connect: " + e); System.exit(0); // RBNBProcess.exit(0); } if (preRegister) { try { System.err.println("pre-registering channels for source: " + sName); picm.Add("..."); regPicm = handleRegistration(picm); // plugin.Register(picm); // pre-register System.err.println("pre-register done: " + sName); } catch (Exception se) { System.err.println("Oops, exception on preRegister: " + se); } } // process is to wait for request, get data from sink, convert data, send response, repeat while (true) { try { if (debug) System.err.println("waiting on fetch..."); picm = plugin.Fetch(-1); // block until request arrives if (debug) System.err.println("request picm: " + picm); if (picm.NumberOfChannels() == 0) { System.err.println("oops, no channels in request"); continue; } if (picm.GetRequestReference().equals("registration")) { if (debug) System.err.println("registration request!"); plugin.Flush(handleRegistration(picm)); continue; } else { double tget = picm.GetRequestStart(); double tdur = picm.GetRequestDuration(); String tmode = picm.GetRequestReference(); CTmap ctmap = PI2CTmap(picm); ctmap = ctreader.getDataMap(ctmap, sourceFolder, tget, tdur, tmode); picm = CT2PImap(picm, ctmap, tget, tdur, tmode); if (debug) System.err.println("Flush picm: " + picm + ", nframe: " + ctmap.size()); if (picm == null) System.err.println("no channels!"); else plugin.Flush(picm); } } catch (Exception e) { System.err.println("oops, exception: " + e + ", picm: " + picm); e.printStackTrace(); try { Thread.sleep(1000); picm.PutDataAsString(0, "error: " + e); plugin.Flush(picm); } catch (Exception ee) { } ; // no busy loop // System.exit(0); // no infinite loops } } }