/*
* IronJacamar, a Java EE Connector Architecture implementation
* Copyright 2014, Red Hat Inc, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the Eclipse Public License 1.0 as
* published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Eclipse
* Public License for more details.
*
* You should have received a copy of the Eclipse Public License
* along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.ironjacamar.core.workmanager;
import org.ironjacamar.core.CoreLogger;
import org.ironjacamar.core.api.workmanager.DistributedWorkManager;
import org.ironjacamar.core.api.workmanager.WorkManager;
import org.ironjacamar.core.spi.workmanager.Address;
import org.ironjacamar.core.spi.workmanager.notification.NotificationListener;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import javax.resource.spi.ApplicationServerInternalException;
import org.jboss.logging.Logger;
/**
* Coordinator for WorkManager instances
* @author <a href="jesper.pedersen@ironjacamar.org">Jesper Pedersen</a>
*/
public class WorkManagerCoordinator
{
/** The logger */
private static CoreLogger log = Logger.getMessageLogger(CoreLogger.class,
WorkManagerCoordinator.class.getName());
/** Whether trace is enabled */
private static boolean trace = log.isTraceEnabled();
/** The work managers */
private ConcurrentMap<String, WorkManager> workmanagers;
/** The default work manager */
private WorkManager defaultWorkManager;
/** The activate work managers */
private Map<String, WorkManager> activeWorkmanagers;
/** The ref count for activate work managers */
private Map<String, Integer> refCountWorkmanagers;
/**
* Constructor
*/
private WorkManagerCoordinator()
{
this.workmanagers = new ConcurrentHashMap<String, WorkManager>();
this.defaultWorkManager = null;
this.activeWorkmanagers = new HashMap<>();
this.refCountWorkmanagers = new HashMap<String, Integer>();
}
/**
* Register work manager
* @param wm The work manager
*/
public void registerWorkManager(WorkManager wm)
{
if (wm != null)
{
if (wm.getName() == null || wm.getName().trim().equals(""))
throw new IllegalArgumentException("The name of WorkManager is invalid: " + wm);
if (trace)
log.tracef("Registering WorkManager: %s", wm);
if (!workmanagers.keySet().contains(wm.getName()))
{
workmanagers.put(wm.getName(), wm);
// Replay events for distributed work managers
if (wm instanceof DistributedWorkManager)
{
WorkManagerEventQueue wmeq = WorkManagerEventQueue.getInstance();
List<WorkManagerEvent> events = wmeq.getEvents(wm.getName());
if (!events.isEmpty())
{
if (trace)
log.tracef("%s: Events=%s", wm.getName(), events);
for (WorkManagerEvent event : events)
{
if (event.getType() == WorkManagerEvent.TYPE_JOIN)
{
DistributedWorkManager dwm = resolveDistributedWorkManager(event.getAddress());
if (dwm != null)
{
Collection<NotificationListener> copy =
new ArrayList<>(dwm.getNotificationListeners());
for (NotificationListener nl : copy)
{
nl.join(event.getAddress());
}
}
}
else if (event.getType() == WorkManagerEvent.TYPE_LEAVE)
{
DistributedWorkManager dwm =
(DistributedWorkManager)activeWorkmanagers.get(event.getAddress().getWorkManagerId());
if (dwm != null)
{
Collection<NotificationListener> copy =
new ArrayList<NotificationListener>(dwm.getNotificationListeners());
for (NotificationListener nl : copy)
{
nl.leave(event.getAddress());
}
}
removeWorkManager(event.getAddress().getWorkManagerId());
}
else if (event.getType() == WorkManagerEvent.TYPE_UPDATE_SHORT_RUNNING)
{
DistributedWorkManager dwm =
(DistributedWorkManager)activeWorkmanagers.get(event.getAddress().getWorkManagerId());
if (dwm != null)
{
Collection<NotificationListener> copy =
new ArrayList<NotificationListener>(dwm.getNotificationListeners());
for (NotificationListener nl : copy)
{
nl.updateShortRunningFree(event.getAddress(), event.getValue());
}
}
}
else if (event.getType() == WorkManagerEvent.TYPE_UPDATE_LONG_RUNNING)
{
DistributedWorkManager dwm =
(DistributedWorkManager)activeWorkmanagers.get(event.getAddress().getWorkManagerId());
if (dwm != null)
{
Collection<NotificationListener> copy =
new ArrayList<NotificationListener>(dwm.getNotificationListeners());
for (NotificationListener nl : copy)
{
nl.updateLongRunningFree(event.getAddress(), event.getValue());
}
}
}
}
}
}
}
}
}
/**
* Unregister work manager
* @param wm The work manager
*/
public void unregisterWorkManager(WorkManager wm)
{
if (wm != null)
{
if (wm.getName() == null || wm.getName().trim().equals(""))
throw new IllegalArgumentException("The name of WorkManager is invalid: " + wm);
if (trace)
log.tracef("Unregistering WorkManager: %s", wm);
if (workmanagers.keySet().contains(wm.getName()))
{
workmanagers.remove(wm.getName());
// Clear any events
if (wm instanceof DistributedWorkManager)
{
WorkManagerEventQueue wmeq = WorkManagerEventQueue.getInstance();
List<WorkManagerEvent> events = wmeq.getEvents(wm.getName());
events.clear();
}
}
}
}
/**
* Get the default work manager
* @return The work manager
*/
public WorkManager getDefaultWorkManager()
{
return defaultWorkManager;
}
/**
* Set the default work manager
* @param wm The work manager
*/
public void setDefaultWorkManager(WorkManager wm)
{
if (trace)
log.tracef("Default WorkManager: %s", wm);
String currentName = null;
if (defaultWorkManager != null)
currentName = defaultWorkManager.getName();
defaultWorkManager = wm;
if (wm != null)
{
workmanagers.put(wm.getName(), wm);
}
else if (currentName != null)
{
workmanagers.remove(currentName);
}
}
/**
* Resolve a work manager
* @param address The work manager address
* @return The value
*/
public WorkManager resolveWorkManager(Address address)
{
if (trace)
{
log.tracef("resolveWorkManager(%s)", address);
log.tracef(" ActiveWorkManagers: %s", activeWorkmanagers);
}
WorkManager wm = activeWorkmanagers.get(address.getWorkManagerId());
if (wm != null)
{
if (trace)
log.tracef(" WorkManager: %s", wm);
return wm;
}
try
{
// Create a new instance
WorkManager template = workmanagers.get(address.getWorkManagerName());
if (template != null)
{
wm = template.clone();
wm.setId(address.getWorkManagerId());
if (wm instanceof DistributedWorkManager)
{
DistributedWorkManager dwm = (DistributedWorkManager)wm;
dwm.initialize();
}
activeWorkmanagers.put(address.getWorkManagerId(), wm);
refCountWorkmanagers.put(address.getWorkManagerId(), Integer.valueOf(0));
if (trace)
log.tracef("Created WorkManager: %s", wm);
return wm;
}
}
catch (Throwable t)
{
//throw new IllegalStateException("The WorkManager couldn't be created: " + name);
}
return null;
}
/**
* Resolve a distributed work manager
* @param address The work manager address
* @return The value
*/
public DistributedWorkManager resolveDistributedWorkManager(Address address)
{
if (trace)
{
log.tracef("resolveDistributedWorkManager(%s)", address);
log.tracef(" ActiveWorkManagers: %s", activeWorkmanagers);
}
WorkManager wm = activeWorkmanagers.get(address.getWorkManagerId());
if (wm != null)
{
if (wm instanceof DistributedWorkManager)
{
if (trace)
log.tracef(" WorkManager: %s", wm);
return (DistributedWorkManager)wm;
}
else
{
if (trace)
log.tracef(" WorkManager not distributable: %s", wm);
return null;
}
}
try
{
// Create a new instance
WorkManager template = workmanagers.get(address.getWorkManagerName());
if (template != null)
{
wm = template.clone();
wm.setId(address.getWorkManagerId());
if (wm instanceof DistributedWorkManager)
{
DistributedWorkManager dwm = (DistributedWorkManager)wm;
dwm.initialize();
activeWorkmanagers.put(address.getWorkManagerId(), dwm);
refCountWorkmanagers.put(address.getWorkManagerId(), Integer.valueOf(0));
if (trace)
log.tracef("Created WorkManager: %s", dwm);
return dwm;
}
}
}
catch (Throwable t)
{
//throw new IllegalStateException("The WorkManager couldn't be created: " + name);
}
return null;
}
/**
* Create a work manager
* @param id The id of the work manager
* @param name The name of the work manager; if <code>null</code> default value is used
* @return The work manager
*/
public synchronized WorkManager createWorkManager(String id, String name)
{
if (id == null || id.trim().equals(""))
throw new IllegalArgumentException("The id of WorkManager is invalid: " + id);
// Check for an active work manager
if (activeWorkmanagers.keySet().contains(id))
{
if (trace)
log.tracef("RefCounting WorkManager: %s", id);
Integer i = refCountWorkmanagers.get(id);
refCountWorkmanagers.put(id, Integer.valueOf(i.intValue() + 1));
WorkManager wm = activeWorkmanagers.get(id);
if (wm instanceof DistributedWorkManager)
{
DistributedWorkManager dwm = (DistributedWorkManager)wm;
if (dwm.getTransport() != null)
dwm.getTransport().register(new Address(wm.getId(), wm.getName(), dwm.getTransport().getId()));
}
return wm;
}
try
{
// Create a new instance
WorkManager template = null;
if (name != null)
{
template = workmanagers.get(name);
}
else
{
template = defaultWorkManager;
}
if (template == null)
throw new IllegalArgumentException("The WorkManager wasn't found: " + name);
WorkManager wm = template.clone();
wm.setId(id);
if (wm instanceof DistributedWorkManager)
{
DistributedWorkManager dwm = (DistributedWorkManager)wm;
dwm.initialize();
if (dwm.getTransport() != null)
{
dwm.getTransport().register(new Address(wm.getId(), wm.getName(), dwm.getTransport().getId()));
try
{
((DistributedWorkManager) wm).getTransport().startup();
}
catch (Throwable t)
{
throw new ApplicationServerInternalException("Unable to start the DWM Transport ID:" +
((DistributedWorkManager) wm).getTransport().getId(), t);
}
}
else
{
throw new ApplicationServerInternalException("DistributedWorkManager " + dwm.getName() +
" doesn't have a transport associated");
}
}
activeWorkmanagers.put(id, wm);
refCountWorkmanagers.put(id, Integer.valueOf(1));
if (trace)
log.tracef("Created WorkManager: %s", wm);
return wm;
}
catch (Throwable t)
{
throw new IllegalStateException("The WorkManager couldn't be created: " + name, t);
}
}
/**
* Remove a work manager
* @param id The id of the work manager
*/
public synchronized void removeWorkManager(String id)
{
if (id == null || id.trim().equals(""))
throw new IllegalArgumentException("The id of WorkManager is invalid: " + id);
Integer i = refCountWorkmanagers.get(id);
if (i != null)
{
int newValue = i.intValue() - 1;
if (newValue == 0)
{
if (trace)
log.tracef("Removed WorkManager: %s", id);
WorkManager wm = activeWorkmanagers.get(id);
if (wm instanceof DistributedWorkManager)
{
DistributedWorkManager dwm = (DistributedWorkManager)wm;
if (dwm.getTransport() != null)
dwm.getTransport().unregister(new Address(wm.getId(), wm.getName(), dwm.getTransport().getId()));
}
activeWorkmanagers.remove(id);
refCountWorkmanagers.remove(id);
}
else
{
if (trace)
log.tracef("DerefCount WorkManager: %s", id);
refCountWorkmanagers.put(id, Integer.valueOf(newValue));
}
}
}
}