package org.argeo.cms.internal.kernel;
import static bitronix.tm.TransactionManagerServices.getTransactionManager;
import static bitronix.tm.TransactionManagerServices.getTransactionSynchronizationRegistry;
import static java.util.Locale.ENGLISH;
import static org.argeo.cms.internal.kernel.DataModelNamespace.CMS_DATA_MODEL_NAMESPACE;
import static org.argeo.cms.internal.kernel.KernelUtils.getFrameworkProp;
import static org.argeo.cms.internal.kernel.KernelUtils.getOsgiInstanceDir;
import static org.argeo.jcr.ArgeoJcrConstants.ALIAS_NODE;
import static org.argeo.jcr.ArgeoJcrConstants.JCR_REPOSITORY_ALIAS;
import static org.argeo.util.LocaleChoice.asLocaleList;
import static org.osgi.framework.Constants.FRAMEWORK_UUID;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.lang.management.ManagementFactory;
import java.net.URL;
import java.security.PrivilegedAction;
import java.util.Dictionary;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import javax.jcr.ImportUUIDBehavior;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.RepositoryFactory;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;
import javax.security.auth.Subject;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;
import javax.transaction.TransactionManager;
import javax.transaction.TransactionSynchronizationRegistry;
import javax.transaction.UserTransaction;
import org.apache.commons.io.FileUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.jackrabbit.api.JackrabbitRepository;
import org.apache.jackrabbit.commons.cnd.CndImporter;
import org.apache.jackrabbit.util.TransientFileFactory;
import org.argeo.ArgeoException;
import org.argeo.ArgeoLogger;
import org.argeo.cms.CmsException;
import org.argeo.cms.maintenance.MaintenanceUi;
import org.argeo.jackrabbit.JackrabbitDataModel;
import org.argeo.jackrabbit.ManagedJackrabbitRepository;
import org.argeo.jackrabbit.OsgiJackrabbitRepositoryFactory;
import org.argeo.jcr.ArgeoJcrConstants;
import org.argeo.jcr.ArgeoJcrUtils;
import org.argeo.jcr.JcrUtils;
import org.argeo.jcr.RepoConf;
import org.eclipse.equinox.http.jetty.JettyConfigurator;
import org.eclipse.equinox.http.jetty.JettyConstants;
import org.eclipse.equinox.http.servlet.ExtendedHttpService;
import org.eclipse.rap.rwt.application.ApplicationConfiguration;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
import org.osgi.framework.startlevel.BundleStartLevel;
import org.osgi.framework.wiring.BundleCapability;
import org.osgi.framework.wiring.BundleWire;
import org.osgi.framework.wiring.BundleWiring;
import org.osgi.service.cm.Configuration;
import org.osgi.service.cm.ConfigurationAdmin;
import org.osgi.service.cm.ManagedService;
import org.osgi.service.log.LogReaderService;
import org.osgi.service.useradmin.UserAdmin;
import org.osgi.util.tracker.ServiceTracker;
import bitronix.tm.BitronixTransactionManager;
import bitronix.tm.BitronixTransactionSynchronizationRegistry;
import bitronix.tm.TransactionManagerServices;
/**
* Argeo CMS Kernel. Responsible for :
*
* - security
* - provisioning
* - transaction
* - logging
* - local and remote file systems access
* - OS access
*
*/
final class Kernel implements KernelHeader, KernelConstants, ServiceListener {
/*
* SERVICE REFERENCES
*/
private ServiceReference configurationAdmin;
/*
* REGISTERED SERVICES
*/
private ServiceRegistration loggerReg;
private ServiceRegistration tmReg;
private ServiceRegistration utReg;
private ServiceRegistration tsrReg;
private ServiceRegistration extends Repository> repositoryReg;
private ServiceRegistration repositoryFactoryReg;
private ServiceRegistration userAdminReg;
/*
* SERVICES IMPLEMENTATIONS
*/
private NodeLogger logger;
private BitronixTransactionManager transactionManager;
private BitronixTransactionSynchronizationRegistry transactionSynchronizationRegistry;
private OsgiJackrabbitRepositoryFactory repositoryFactory;
JackrabbitRepository repository;
private NodeUserAdmin userAdmin;
// Members
private final static Log log = LogFactory.getLog(Kernel.class);
ThreadGroup threadGroup = new ThreadGroup(Kernel.class.getSimpleName());
private final BundleContext bc = Activator.getBundleContext();
private final NodeSecurity nodeSecurity;
private DataHttp dataHttp;
private NodeHttp nodeHttp;
private KernelThread kernelThread;
private Locale defaultLocale = null;
private List locales = null;
public Kernel() {
// KernelUtils.logFrameworkProperties(log);
nodeSecurity = new NodeSecurity();
}
final void init() {
Subject.doAs(nodeSecurity.getKernelSubject(), new PrivilegedAction() {
@Override
public Void run() {
doInit();
return null;
}
});
}
private void doInit() {
long begin = System.currentTimeMillis();
// Use CMS bundle classloader
ClassLoader currentContextCl = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(Kernel.class.getClassLoader());
try {
// Listen to service publication (also ours)
bc.addServiceListener(Kernel.this);
if (nodeSecurity.isFirstInit())
firstInit();
defaultLocale = new Locale(getFrameworkProp(I18N_DEFAULT_LOCALE, ENGLISH.getLanguage()));
locales = asLocaleList(getFrameworkProp(I18N_LOCALES));
ServiceTracker logReaderService = new ServiceTracker(
bc, LogReaderService.class, null);
logReaderService.open();
logger = new NodeLogger(logReaderService.getService());
logReaderService.close();
if (isMaintenance())
maintenanceInit();
else
normalInit();
} catch (Exception e) {
log.error("Cannot initialize Argeo CMS", e);
throw new ArgeoException("Cannot initialize", e);
} finally {
Thread.currentThread().setContextClassLoader(currentContextCl);
// FIXME better manage lifecycle.
try {
new LoginContext(LOGIN_CONTEXT_KERNEL, nodeSecurity.getKernelSubject()).logout();
} catch (LoginException e) {
e.printStackTrace();
}
}
long jvmUptime = ManagementFactory.getRuntimeMXBean().getUptime();
log.info("## ARGEO CMS UP in " + (jvmUptime / 1000) + "." + (jvmUptime % 1000) + "s ##");
long initDuration = System.currentTimeMillis() - begin;
if (log.isTraceEnabled())
log.trace("Kernel initialization took " + initDuration + "ms");
directorsCut(initDuration);
}
private void normalInit() {
ConfigurationAdmin conf = findConfigurationAdmin();
// HTTP
initWebServer(conf);
// ServiceReference sr =
// bc.getServiceReference(ExtendedHttpService.class);
// if (sr != null)
// addHttpService(sr);
// else
// log.warn("No http service found");
// Initialise services
initTransactionManager();
try {
Configuration nodeConf = conf.getConfiguration(ArgeoJcrConstants.REPO_PID_NODE);
if (nodeConf.getProperties() == null) {
Dictionary props = getNodeConfigFromFrameworkProperties();
if (props == null) {
// TODO interactive configuration
if (log.isDebugEnabled())
log.debug("No argeo.node.repo.type=localfs|h2|postgresql|memory"
+ " property defined, entering interactive mode...");
return;
}
nodeConf.update(props);
}
} catch (IOException e) {
throw new CmsException("Cannot get configuration", e);
}
ManagedJackrabbitRepository nodeRepo = new ManagedJackrabbitRepository();
String[] clazzes = { ManagedService.class.getName(), Repository.class.getName(),
JackrabbitRepository.class.getName() };
Hashtable serviceProps = new Hashtable();
serviceProps.put(Constants.SERVICE_PID, ArgeoJcrConstants.REPO_PID_NODE);
serviceProps.put(ArgeoJcrConstants.JCR_REPOSITORY_ALIAS, ArgeoJcrConstants.ALIAS_NODE);
ServiceRegistration> nodeSr = bc.registerService(clazzes, nodeRepo, serviceProps);
nodeRepo.waitForInit();
new JackrabbitDataModel(bc).prepareDataModel(nodeRepo);
prepareDataModel(nodeRepo);
repository = (JackrabbitRepository) bc.getService(nodeSr.getReference());
if (repository == null)
repository = new NodeRepository();
if (repositoryFactory == null) {
repositoryFactory = new OsgiJackrabbitRepositoryFactory();
repositoryFactory.setBundleContext(bc);
}
userAdmin = new NodeUserAdmin(transactionManager, repository);
// ADMIN UIs
UserUi userUi = new UserUi();
Hashtable props = new Hashtable();
props.put("contextName", "user");
bc.registerService(ApplicationConfiguration.class, userUi, props);
// Bundle rapWorkbenchBundle =
// findBundle("org.eclipse.rap.ui.workbench");
// if (rapWorkbenchBundle != null)
// try {
// Class> clss = rapWorkbenchBundle
// .loadClass("org.eclipse.rap.ui.internal.servlet.WorkbenchApplicationConfiguration");
//
// Hashtable rapWorkbenchProps = new Hashtable();
// rapWorkbenchProps.put("contextName", "ui");
// ApplicationConfiguration workbenchApplicationConfiguration =
// (ApplicationConfiguration) clss
// .newInstance();
// bc.registerService(ApplicationConfiguration.class,
// workbenchApplicationConfiguration,
// rapWorkbenchProps);
// } catch (Exception e) {
// log.error("Cannot initalize RAP workbench", e);
// }
// Kernel thread
kernelThread = new KernelThread(this);
kernelThread.setContextClassLoader(Kernel.class.getClassLoader());
kernelThread.start();
// Publish services to OSGi
publish();
}
private Dictionary getNodeConfigFromFrameworkProperties() {
String repoType = KernelUtils.getFrameworkProp(KernelConstants.NODE_REPO_PROP_PREFIX + RepoConf.type.name());
if (repoType == null)
return null;
Hashtable props = new Hashtable();
for (RepoConf repoConf : RepoConf.values()) {
String value = KernelUtils.getFrameworkProp(KernelConstants.NODE_REPO_PROP_PREFIX + repoConf.name());
if (value != null)
props.put(repoConf.name(), value);
}
return props;
}
private void prepareDataModel(ManagedJackrabbitRepository nodeRepo) {
Session adminSession = null;
try {
Set processed = new HashSet();
adminSession = nodeRepo.login();
bundles: for (Bundle bundle : bc.getBundles()) {
BundleWiring wiring = bundle.adapt(BundleWiring.class);
if (wiring == null) {
if (log.isTraceEnabled())
log.error("No wiring for " + bundle.getSymbolicName());
continue bundles;
}
processWiring(adminSession, wiring, processed);
}
} catch (RepositoryException e) {
throw new CmsException("Cannot prepare data model", e);
} finally {
JcrUtils.logoutQuietly(adminSession);
}
}
private void processWiring(Session adminSession, BundleWiring wiring, Set processed) {
// recursively process requirements first
List requiredWires = wiring.getRequiredWires(CMS_DATA_MODEL_NAMESPACE);
for (BundleWire wire : requiredWires) {
processWiring(adminSession, wire.getProviderWiring(), processed);
// registerCnd(adminSession, wire.getCapability(), processed);
}
List capabilities = wiring.getCapabilities(CMS_DATA_MODEL_NAMESPACE);
for (BundleCapability capability : capabilities) {
registerCnd(adminSession, capability, processed);
}
}
private void registerCnd(Session adminSession, BundleCapability capability, Set processed) {
Map attrs = capability.getAttributes();
String name = attrs.get(DataModelNamespace.CAPABILITY_NAME_ATTRIBUTE).toString();
if (processed.contains(name)) {
if (log.isTraceEnabled())
log.trace("Data model " + name + " has already been processed");
return;
}
String path = attrs.get(DataModelNamespace.CAPABILITY_CND_ATTRIBUTE).toString();
URL url = capability.getRevision().getBundle().getResource(path);
try (Reader reader = new InputStreamReader(url.openStream())) {
CndImporter.registerNodeTypes(reader, adminSession, true);
processed.add(name);
if (log.isDebugEnabled())
log.debug("Registered CND " + url);
} catch (Exception e) {
throw new CmsException("Cannot read cnd " + url, e);
}
Hashtable properties = new Hashtable<>();
properties.put(ArgeoJcrConstants.JCR_REPOSITORY_ALIAS, name);
bc.registerService(Repository.class, adminSession.getRepository(), properties);
if (log.isDebugEnabled())
log.debug("Published data model " + name);
}
private boolean isMaintenance() {
String startLevel = KernelUtils.getFrameworkProp("osgi.startLevel");
if (startLevel == null)
return false;
int bundleStartLevel = bc.getBundle().adapt(BundleStartLevel.class).getStartLevel();
// int frameworkStartLevel =
// bc.getBundle(0).adapt(BundleStartLevel.class)
// .getStartLevel();
int frameworkStartLevel = Integer.parseInt(startLevel);
// int frameworkStartLevel = bc.getBundle(0)
// .adapt(FrameworkStartLevel.class).getStartLevel();
return bundleStartLevel == frameworkStartLevel;
}
private void maintenanceInit() {
log.info("## MAINTENANCE ##");
bc.addServiceListener(Kernel.this);
initWebServer(null);
MaintenanceUi maintenanceUi = new MaintenanceUi();
Hashtable props = new Hashtable();
props.put("contextName", "maintenance");
bc.registerService(ApplicationConfiguration.class, maintenanceUi, props);
}
private void firstInit() {
log.info("## FIRST INIT ##");
String nodeInit = getFrameworkProp(NODE_INIT);
if (nodeInit == null)
nodeInit = "../../init";
if (nodeInit.startsWith("http")) {
remoteFirstInit(nodeInit);
return;
}
File initDir;
if (nodeInit.startsWith("."))
initDir = KernelUtils.getExecutionDir(nodeInit);
else
initDir = new File(nodeInit);
// TODO also uncompress archives
if (initDir.exists())
try {
FileUtils.copyDirectory(initDir, getOsgiInstanceDir(), new FileFilter() {
@Override
public boolean accept(File pathname) {
if (pathname.getName().equals(".svn") || pathname.getName().equals(".git"))
return false;
return true;
}
});
log.info("CMS initialized from " + initDir.getCanonicalPath());
} catch (IOException e) {
throw new CmsException("Cannot initialize from " + initDir, e);
}
}
private void remoteFirstInit(String uri) {
try {
repository = new NodeRepository();
repositoryFactory = new OsgiJackrabbitRepositoryFactory();
Repository remoteRepository = ArgeoJcrUtils.getRepositoryByUri(repositoryFactory, uri);
Session remoteSession = remoteRepository.login(new SimpleCredentials("root", "demo".toCharArray()), "main");
Session localSession = this.repository.login();
// FIXME register node type
// if (false)
// CndImporter.registerNodeTypes(null, localSession);
ByteArrayOutputStream out = new ByteArrayOutputStream();
remoteSession.exportSystemView("/", out, true, false);
ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
localSession.importXML("/", in, ImportUUIDBehavior.IMPORT_UUID_COLLISION_THROW);
// JcrUtils.copy(remoteSession.getRootNode(),
// localSession.getRootNode());
} catch (Exception e) {
throw new CmsException("Cannot first init from " + uri, e);
}
}
/** Can be null */
private ConfigurationAdmin findConfigurationAdmin() {
configurationAdmin = bc.getServiceReference(ConfigurationAdmin.class);
if (configurationAdmin == null) {
return null;
}
return bc.getService(configurationAdmin);
}
/** Can be null */
Bundle findBundle(String symbolicName) {
for (Bundle b : bc.getBundles())
if (b.getSymbolicName().equals(symbolicName))
return b;
return null;
}
private void initTransactionManager() {
bitronix.tm.Configuration tmConf = TransactionManagerServices.getConfiguration();
tmConf.setServerId(getFrameworkProp(FRAMEWORK_UUID));
// File tmBaseDir = new File(getFrameworkProp(TRANSACTIONS_HOME,
// getOsgiInstancePath(DIR_TRANSACTIONS)));
File tmBaseDir = bc.getDataFile(DIR_TRANSACTIONS);
File tmDir1 = new File(tmBaseDir, "btm1");
tmDir1.mkdirs();
tmConf.setLogPart1Filename(new File(tmDir1, tmDir1.getName() + ".tlog").getAbsolutePath());
File tmDir2 = new File(tmBaseDir, "btm2");
tmDir2.mkdirs();
tmConf.setLogPart2Filename(new File(tmDir2, tmDir2.getName() + ".tlog").getAbsolutePath());
transactionManager = getTransactionManager();
transactionSynchronizationRegistry = getTransactionSynchronizationRegistry();
}
private void initWebServer(ConfigurationAdmin conf) {
String httpPort = getFrameworkProp("org.osgi.service.http.port");
String httpsPort = getFrameworkProp("org.osgi.service.http.port.secure");
try {
if (httpPort != null || httpsPort != null) {
Hashtable jettyProps = new Hashtable();
if (httpPort != null) {
jettyProps.put(JettyConstants.HTTP_PORT, httpPort);
jettyProps.put(JettyConstants.HTTP_ENABLED, true);
}
if (httpsPort != null) {
jettyProps.put(JettyConstants.HTTPS_PORT, httpsPort);
jettyProps.put(JettyConstants.HTTPS_ENABLED, true);
jettyProps.put(JettyConstants.SSL_KEYSTORETYPE, "PKCS12");
jettyProps.put(JettyConstants.SSL_KEYSTORE,
nodeSecurity.getHttpServerKeyStore().getCanonicalPath());
jettyProps.put(JettyConstants.SSL_PASSWORD, "changeit");
jettyProps.put(JettyConstants.SSL_WANTCLIENTAUTH, true);
}
if (conf != null) {
// TODO make filter more generic
String filter = "(" + JettyConstants.HTTP_PORT + "=" + httpPort + ")";
if (conf.listConfigurations(filter) != null)
return;
Configuration jettyConf = conf.createFactoryConfiguration(JETTY_FACTORY_PID, null);
jettyConf.update(jettyProps);
} else {
JettyConfigurator.startServer("default", jettyProps);
}
}
} catch (Exception e) {
throw new CmsException("Cannot initialize web server on " + httpPortsMsg(httpPort, httpsPort), e);
}
}
@SuppressWarnings("unchecked")
private void publish() {
// Logging
loggerReg = bc.registerService(ArgeoLogger.class, logger, null);
// Transaction
tmReg = bc.registerService(TransactionManager.class, transactionManager, null);
utReg = bc.registerService(UserTransaction.class, transactionManager, null);
tsrReg = bc.registerService(TransactionSynchronizationRegistry.class, transactionSynchronizationRegistry, null);
// User admin
userAdminReg = bc.registerService(UserAdmin.class, userAdmin, userAdmin.currentState());
// JCR
Hashtable regProps = new Hashtable();
regProps.put(JCR_REPOSITORY_ALIAS, ALIAS_NODE);
repositoryReg = (ServiceRegistration extends Repository>) bc.registerService(
new String[] { Repository.class.getName(), JackrabbitRepository.class.getName() }, repository,
regProps);
repositoryFactoryReg = bc.registerService(RepositoryFactory.class, repositoryFactory, null);
}
void destroy() {
long begin = System.currentTimeMillis();
unpublish();
kernelThread.destroyAndJoin();
if (dataHttp != null)
dataHttp.destroy();
if (nodeHttp != null)
nodeHttp.destroy();
if (userAdmin != null)
userAdmin.destroy();
if (repository != null)
repository.shutdown();
if (transactionManager != null)
transactionManager.shutdown();
bc.removeServiceListener(this);
// Clean hanging threads from Jackrabbit
TransientFileFactory.shutdown();
// Clean hanging Gogo shell thread
new GogoShellKiller().start();
nodeSecurity.destroy();
long duration = System.currentTimeMillis() - begin;
log.info("## ARGEO CMS DOWN in " + (duration / 1000) + "." + (duration % 1000) + "s ##");
}
private void unpublish() {
userAdminReg.unregister();
repositoryFactoryReg.unregister();
repositoryReg.unregister();
tmReg.unregister();
utReg.unregister();
tsrReg.unregister();
loggerReg.unregister();
}
@Override
public void serviceChanged(ServiceEvent event) {
ServiceReference> sr = event.getServiceReference();
Object service = bc.getService(sr);
if (service instanceof Repository) {
Object jcrRepoAlias = sr.getProperty(ArgeoJcrConstants.JCR_REPOSITORY_ALIAS);
if (jcrRepoAlias != null) {// JCR repository
String alias = jcrRepoAlias.toString();
Repository repository = (Repository) bc.getService(sr);
Map props = new HashMap();
for (String key : sr.getPropertyKeys())
props.put(key, sr.getProperty(key));
if (ServiceEvent.REGISTERED == event.getType()) {
try {
// repositoryFactory.register(repository, props);
dataHttp.registerRepositoryServlets(alias, repository);
} catch (Exception e) {
throw new CmsException("Could not publish JCR repository " + alias, e);
}
} else if (ServiceEvent.UNREGISTERING == event.getType()) {
// repositoryFactory.unregister(repository, props);
dataHttp.unregisterRepositoryServlets(alias);
}
}
} else if (service instanceof ExtendedHttpService) {
if (ServiceEvent.REGISTERED == event.getType()) {
addHttpService(sr);
} else if (ServiceEvent.UNREGISTERING == event.getType()) {
dataHttp.destroy();
dataHttp = null;
}
}
}
private void addHttpService(ServiceReference> sr) {
// for (String key : sr.getPropertyKeys())
// log.debug(key + "=" + sr.getProperty(key));
ExtendedHttpService httpService = (ExtendedHttpService) bc.getService(sr);
// TODO find constants
Object httpPort = sr.getProperty("http.port");
Object httpsPort = sr.getProperty("https.port");
dataHttp = new DataHttp(httpService);
nodeHttp = new NodeHttp(httpService, bc);
if (log.isDebugEnabled())
log.debug(httpPortsMsg(httpPort, httpsPort));
}
private String httpPortsMsg(Object httpPort, Object httpsPort) {
return "HTTP " + httpPort + (httpsPort != null ? " - HTTPS " + httpsPort : "");
}
@Override
public Locale getDefaultLocale() {
return defaultLocale;
}
/** Can be null. */
@Override
public List getLocales() {
return locales;
}
final private static void directorsCut(long initDuration) {
// final long ms = 128l + (long) (Math.random() * 128d);
long ms = initDuration / 100;
log.info("Spend " + ms + "ms" + " reflecting on the progress brought to mankind" + " by Free Software...");
long beginNano = System.nanoTime();
try {
Thread.sleep(ms, 0);
} catch (InterruptedException e) {
// silent
}
long durationNano = System.nanoTime() - beginNano;
final double M = 1000d * 1000d;
double sleepAccuracy = ((double) durationNano) / (ms * M);
if (log.isDebugEnabled())
log.debug("Sleep accuracy: " + String.format("%.2f", 100 - (sleepAccuracy * 100 - 100)) + " %");
}
/** Workaround for blocking Gogo shell by system shutdown. */
private class GogoShellKiller extends Thread {
public GogoShellKiller() {
super("Gogo shell killer");
setDaemon(true);
}
@Override
public void run() {
ThreadGroup rootTg = getRootThreadGroup(null);
Thread gogoShellThread = findGogoShellThread(rootTg);
if (gogoShellThread == null)
return;
while (getNonDaemonCount(rootTg) > 2) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// silent
}
}
gogoShellThread = findGogoShellThread(rootTg);
if (gogoShellThread == null)
return;
System.exit(0);
}
}
private static ThreadGroup getRootThreadGroup(ThreadGroup tg) {
if (tg == null)
tg = Thread.currentThread().getThreadGroup();
if (tg.getParent() == null)
return tg;
else
return getRootThreadGroup(tg.getParent());
}
private static int getNonDaemonCount(ThreadGroup rootThreadGroup) {
Thread[] threads = new Thread[rootThreadGroup.activeCount()];
rootThreadGroup.enumerate(threads);
int nonDameonCount = 0;
for (Thread t : threads)
if (t != null && !t.isDaemon())
nonDameonCount++;
return nonDameonCount;
}
private static Thread findGogoShellThread(ThreadGroup rootThreadGroup) {
Thread[] threads = new Thread[rootThreadGroup.activeCount()];
rootThreadGroup.enumerate(threads, true);
for (Thread thread : threads) {
if (thread.getName().equals("Gogo shell"))
return thread;
}
return null;
}
}