/** 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
}
}
}