/** Performs the probe asynchronously. */
private void sendProbe() {
final NameServicesChannelMessage message = new NameServicesChannelMessage();
message.agent = Nodel.getAgent();
List<String> discoveryList = new ArrayList<String>(1);
discoveryList.add("*");
List<String> typesList = new ArrayList<String>(2);
typesList.add("tcp");
typesList.add("http");
message.discovery = discoveryList;
message.types = typesList;
_lastProbe.set(System.nanoTime());
// IO is involved so use a thread-pool
_threadPool.execute(
new Runnable() {
@Override
public void run() {
sendMessage(_sendSocket, s_sendSocketLabel, _groupSocketAddress, message);
// check if hard links (direct "multicasting") are enabled for some hosts
if (_hardLinksAddresses != null && _hardLinksSocket != null) {
for (InetSocketAddress socketAddress : _hardLinksAddresses) {
sendMessage(_hardLinksSocket, s_hardLinksSocketlabel, socketAddress, message);
}
}
}
});
}
private void enqueueForProcessing(DatagramPacket dp, String label) {
// place it in the queue and make it process if necessary
synchronized (_incomingQueue) {
QueueEntry qe = new QueueEntry(label, dp);
_incomingQueue.add(qe);
// kick off the other thread to process the queue
// (otherwise the thread will already be processing the queue)
if (!_isProcessingIncomingQueue) {
_isProcessingIncomingQueue = true;
_threadPool.execute(_incomingQueueProcessor);
}
}
}
/** Sends a prepared buffer immediately, optionally using a thread-pool */
private void sendBufferNow(final byte[] buffer, final String origData, boolean onThreadPool) {
final OutputStream os;
synchronized (_lock) {
os = _outputStream;
}
if (os != null) {
if (onThreadPool) {
_threadPool.execute(
new Runnable() {
@Override
public void run() {
_threadStateHandler.handle();
sendBufferNow0(os, buffer, origData);
}
});
} else {
sendBufferNow0(os, buffer, origData);
}
}
}