@SuppressWarnings("boxing")
public void backgroundInit() {
// (Ralf:) zomfg, this is one of the worst hacks i've done the last years. Deep within jmdns we
// placed a variable to
// override a check if it is already safe to transmit something. jmDNS usually takes 5 seconds
// to reach that state, but that's
// too long for us. If you set this variable the check will be skipped and the request should
// take place much faster.
// Appears to work(tm).
ServiceResolver.ANNOUNCE_OVERRIDE = true;
this.logger.status("backgroundinit/start");
final PluginConfigurationUtil pcu = new PluginConfigurationUtil(this.pluginConfiguration);
this.startupLock = pcu.getInt(RemoteDiscovery.class, "startup.locktime", 1000);
this.lockMode = pcu.getString(RemoteDiscovery.class, "startup.lockmode", "onepass");
try {
this.logger.status("backgroundinit/lock");
this.jmdnsLock.lock();
this.jmdns =
JmDNS
.create(); // Maybe init with local loopback in case no other network card is present,
// otherwise returns null
this.timeOfStartup = System.currentTimeMillis();
final int port = RemoteDiscoveryImpl.getFreePort();
final ServiceInfo service =
ServiceInfo.create(TYPE, NAME + " @" + this.timeOfStartup, port, 0, 0, EXPORT_NAME);
this.logger.status("backgroundinit/export", "port", port);
this.localManagerExportServer =
Proxies.newServer(EXPORT_NAME, port, (DiscoveryManager) this.localTCPIPManager);
this.logger.status("backgroundinit/announce", "port", port);
this.jmdns.registerService(service);
// Set it again, this time for the lock below
this.timeOfStartup = System.currentTimeMillis();
} catch (final IOException e) {
e.printStackTrace();
} catch (final IllegalStateException e) {
this.logger.status("backgroundinit/exception/illegalstate", "message", e.getMessage());
} finally {
this.logger.status("backgroundinit/unlock");
this.startupLatch.countDown();
this.jmdnsLock.unlock();
}
this.logger.status("backgroundinit/end");
}
void discoverThread() {
try {
this.startupLatch.await();
} catch (final InterruptedException e) {
e.printStackTrace();
return;
}
// Increase counter
this.discoverThreadCounter.incrementAndGet();
// Create empty data.
ServiceInfo[] infos = {};
// Magic: Get all network services of our type.
try {
this.jmdnsLock.lock();
// TODO: jmdsn can be null if no network card is present
infos = this.jmdns.list(TYPE);
} catch (final IllegalStateException e) {
this.logger.status("discoverthread/exception", "message", e.getMessage());
} finally {
this.jmdnsLock.unlock();
}
// Reset all service infos
try {
this.serviceInfosLock.lock();
this.serviceInfos.clear();
this.serviceInfos.addAll(Arrays.asList(infos));
} finally {
this.serviceInfosLock.unlock();
}
// Process all callbacks.
@SuppressWarnings("unused")
final Collection<CallbackRequest> toRemove = new ArrayList<CallbackRequest>();
//
// TODO: This callback handling needs improvement. Check for unsynchronized access to the
// allRequest structure
//
}
/**
* Notifies single listener.
*
* @param lsnr Listener.
*/
private void notifyListener(IgniteInClosure<? super IgniteInternalFuture<R>> lsnr) {
assert lsnr != null;
try {
lsnr.apply(this);
} catch (IllegalStateException e) {
U.error(
null,
"Failed to notify listener (is grid stopped?) [fut="
+ this
+ ", lsnr="
+ lsnr
+ ", err="
+ e.getMessage()
+ ']',
e);
} catch (RuntimeException | Error e) {
U.error(null, "Failed to notify listener: " + lsnr, e);
throw e;
}
}