/** 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();
}
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();
}
}
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();
}
}
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 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
}
}
}