/*
* Copyright (C) 2013 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* 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 GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General 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.exoplatform.container.multitenancy.bridge;
import org.exoplatform.container.component.ComponentPlugin;
import org.exoplatform.container.multitenancy.CurrentTenantNotSetException;
import org.exoplatform.container.multitenancy.Tenant;
import org.exoplatform.container.multitenancy.TenantsService;
import org.exoplatform.container.multitenancy.TenantsStateListener;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.util.ArrayList;
import java.util.List;
/**
* Implementation of {@link TenantsService} based on plugins. Following kinds of plugin supported: <ul>
* <li>
* CurrentTenantLookup
* </li>
* <li>
* TenantStateObserver
* </li>
* </ul>
*
* NOTE: TenantsServiceImpl can be consumed before the container start (e.g. to add a listener or check current tenant).
*
* @author <a href="mailto:pnedonosko@exoplatform.com">Peter Nedonosko</a>
*
*/
public class TenantsServiceImpl implements TenantsService
{
protected static final Log LOG = ExoLogger.getLogger(TenantsServiceImpl.class);
/**
* List of registered {@link CurrentTenantLookup} implementations.
*/
protected final List<CurrentTenantLookup> lookups = new ArrayList<CurrentTenantLookup>();
/**
* List of registered {@link TenantStateObserver} implementations.
*/
protected final List<TenantStateObserver> observers = new ArrayList<TenantStateObserver>();
/**
* Constructor without dependencies.
*/
public TenantsServiceImpl()
{
}
/**
* Register component plugin. Used by container during the service instantiation. Not recommended for use in runtime.
*
* @param plugin {@link ComponentPlugin}
*/
public void addPlugin(ComponentPlugin plugin)
{
if (plugin instanceof CurrentTenantLookup)
{
lookups.add((CurrentTenantLookup)plugin);
LOG.info("CurrentTenantLookup instance registered: " + plugin.toString());
}
else if (plugin instanceof TenantStateObserver)
{
observers.add((TenantStateObserver)plugin);
LOG.info("TenantStateObserver instance registered: " + plugin.toString());
}
else
{
LOG.warn("Not supported component plugin: " + plugin.getName() + ", type " + plugin.getClass());
}
}
/**
* {@inheritDoc}
*/
@Override
public void addListener(TenantsStateListener listener)
{
for (TenantStateObserver o : observers)
{
o.addListener(listener);
}
}
/**
* {@inheritDoc}
*/
@Override
public void removeListener(TenantsStateListener listener)
{
for (TenantStateObserver o : observers)
{
o.removeListener(listener);
}
}
/**
* {@inheritDoc}
*/
@Override
public Tenant getCurrentTanant() throws CurrentTenantNotSetException
{
for (CurrentTenantLookup l : lookups)
{
if (l.hasCurrentTenant())
{
return l.getCurrentTenant();
}
}
throw new CurrentTenantNotSetException("Current Tenant not set.");
}
/**
* {@inheritDoc}
*/
@Override
public boolean hasCurrentTanant()
{
for (CurrentTenantLookup l : lookups)
{
if (l.hasCurrentTenant())
{
return true;
}
}
return false;
}
}