@SuppressWarnings("boxing")
@Thread(isDaemonic = true)
public void backgroundInit() {
// (Ralf:) zomfg, this is one of the worst hacks i've done the last
// couple of months. Deep within jmdns we placed a variable to
// override a check if it is already save 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;
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");
// TODO put this in a thread
this.checkCache.loadCache();
try {
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 = getFreePort();
final ServiceInfo service =
ServiceInfo.create(TYPE, NAME + " @" + this.timeOfStartup, port, 0, 0, EXPORT_NAME);
this.localManagerExportServer =
Proxies.newServer(EXPORT_NAME, port, (DiscoveryManager) this.localManager);
this.jmdns.registerService(service);
// Set it again, this time for the lock below
this.timeOfStartup = System.currentTimeMillis();
} catch (IOException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
this.logger.warning("Error starting discovery.");
} finally {
this.startupLatch.countDown();
this.jmdnsLock.unlock();
}
// and load our cache...
// todo make this configurable...
// this.checkCache.loadCache(fileName)
}
@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");
}
/**
* Returns the remote proxy to a discovery manager for a given IP / port
*
* @param ip
* @param port
* @return
*/
@SuppressWarnings("unchecked")
DiscoveryManager getRemoteProxy(String ip, int port) {
try {
final String address = ip + ":" + port;
final int timeout = 500; // 500 ms RemoteAPIImpl if need detailed
// version...
final DiscoveryManager newClient =
Proxies.newClient(
EXPORT_NAME,
address,
RemoteDiscoveryImpl.class.getClassLoader(),
DiscoveryManager.class);
/*
* TODO: With this one we still get the message:
*
* "org.freshvanilla.net.VanillaDataSocket allocateBuffer
* INFO: DiscoveryManager: Running low on memory, pausing..."
*
* but, there is no TimeoutException....
*
* @sa DiscoveredPluginTest.testMultiplePlugins()
*/
@SuppressWarnings("unused")
int pingRes = newClient.ping(123321);
// Execute collection asynchronously (TODO: cache pool usage could be
// improved)
final ExecutorService cachePool = Executors.newCachedThreadPool();
final ExecutorCompletionService<String> ecs = new ExecutorCompletionService(cachePool);
final Future<String> future =
ecs.submit(
new Callable<String>() {
public String call() throws Exception {
return AccessController.doPrivileged(
new PrivilegedAction<String>() {
public String run() {
return newClient.toString();
}
});
}
});
// Wait at most half a second (TODO: Make this configurable)
try {
final String string = future.get(timeout, TimeUnit.MILLISECONDS);
/*
* TODO: Probably it is possible to put here some conversion routines... Because it looks like that
* only the ExportInfo makes trouble.... Or just make the ExportInfo much better, ie downwards compatible
*/
if (string == null || newClient.getVersion() != this.localManager.getVersion()) {
return null;
}
return newClient;
} catch (final InterruptedException e) {
// TODO: This one is not an error anymore.
// Interruption is called because we are running cache thread.
// System.err
// .println("Error while waiting for a getRemoteProxy() result");
// e.printStackTrace();
} catch (final ExecutionException e) {
e.printStackTrace();
} catch (final TimeoutException e) {
e.printStackTrace();
} catch (final SecurityException e) {
e.printStackTrace();
} finally {
AccessController.doPrivileged(
new PrivilegedAction<Object>() {
public Object run() {
future.cancel(true);
cachePool.shutdownNow();
return null;
}
});
}
return null;
} finally {
}
}
@SuppressWarnings({"unchecked", "boxing", "rawtypes"})
private DiscoveryManager getRemoteProxyToDiscoveryManager(final String ip, final int port) {
final String address = ip + ":" + port;
final int timeout = 500; // 500 ms RemoteAPIImpl if need detailed version...
this.logger.status("remoteproxytodiscovery/start", "ip", ip, "port", port);
final DiscoveryManager newClient =
Proxies.newClient(
EXPORT_NAME, address, getClass().getClassLoader(), DiscoveryManager.class);
// Execute collection asynchronously (TODO: cache pool usage could be improved)
final ExecutorService cachePool =
Executors.newCachedThreadPool(RemoteDiscoveryImpl.threadFactory);
final ExecutorCompletionService<String> ecs = new ExecutorCompletionService(cachePool);
final Future<String> future =
ecs.submit(
new Callable<String>() {
public String call() throws Exception {
return AccessController.doPrivileged(
new PrivilegedAction<String>() {
public String run() {
return newClient.ping(667) == 667 ? "OK" : null;
}
});
}
});
// Wait at most half a second (TODO: Make this configurable)
try {
final String string = future.get(timeout, TimeUnit.MILLISECONDS);
if (string == null) return null;
return newClient;
} catch (final InterruptedException e) {
this.logger.status("remoteproxytodiscovery/exception/interrupted", "message", e.getMessage());
e.printStackTrace();
} catch (final ExecutionException e) {
this.logger.status(
"remoteproxytodiscovery/exception/executionexception", "message", e.getMessage());
} catch (final TimeoutException e) {
this.logger.status(
"remoteproxytodiscovery/exception/timeoutexception", "message", e.getMessage());
} catch (final SecurityException e) {
this.logger.status(
"remoteproxytodiscovery/exception/securityexception", "message", e.getMessage());
e.printStackTrace();
} finally {
AccessController.doPrivileged(
new PrivilegedAction<Object>() {
public Object run() {
future.cancel(true);
cachePool.shutdownNow();
return null;
}
});
this.logger.status("remoteproxytodiscovery/end");
}
this.logger.status("remoteproxytodiscovery/end");
return null;
}
