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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2008, Red Hat Middleware LLC, 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 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.jboss.as.ejb3.iiop;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import org.omg.CORBA.Policy;
import org.omg.CORBA.SetOverrideType;
import org.omg.PortableServer.IdAssignmentPolicyValue;
import org.omg.PortableServer.IdUniquenessPolicyValue;
import org.omg.PortableServer.LifespanPolicyValue;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.RequestProcessingPolicyValue;
import org.omg.PortableServer.Servant;
import org.omg.PortableServer.ServantRetentionPolicyValue;

/**
 * Registry that maintains 2 different servant registries
 * 

*

    *
  • a ServantRegistry with a transient POA per servant;
  • *
  • a ServantRegistry with persistent POA per servant.
  • *
*

* CORBA servants registered with any of these * ServantRegistry instances will receive IIOP invocations. * * @author Francisco Reverbel */ public class POARegistry implements Service { public static final ServiceName SERVICE_NAME = ServiceName.JBOSS.append("ejb", "iiop", "POARegistry"); public static final byte[] EMPTY_BYTES = {}; /** * The root POA. * */ private final InjectedValue rootPOA = new InjectedValue(); /** * A ServantRegistry with a transient POA per servant. */ private ServantRegistry registryWithTransientPOAPerServant; /** * The transient POA map used by the ServantRegistry above. */ private Map transientPoaMap; /** * POA policies used by the ServantRegistry above. */ private Policy[] transientPoaPolicies; /** * A ServantRegistry with a persistent POA per servant. */ private ServantRegistry registryWithPersistentPOAPerServant; /** * The persistent POA map used by the ServantRegistry above. */ private Map persistentPoaMap; /** * POA policies used by the ServantRegistry above. */ private Policy[] persistentPoaPolicies; public synchronized void start(final StartContext startContext) throws StartException { transientPoaMap = Collections.synchronizedMap(new HashMap()); persistentPoaMap = Collections.synchronizedMap(new HashMap()); final POA rootPOA = this.rootPOA.getValue(); // Policies for per-servant transient POAs transientPoaPolicies = new Policy[]{rootPOA.create_lifespan_policy( LifespanPolicyValue.TRANSIENT), rootPOA.create_id_assignment_policy(IdAssignmentPolicyValue.SYSTEM_ID), rootPOA.create_servant_retention_policy(ServantRetentionPolicyValue.NON_RETAIN), rootPOA.create_request_processing_policy(RequestProcessingPolicyValue.USE_DEFAULT_SERVANT), rootPOA.create_id_uniqueness_policy( IdUniquenessPolicyValue.MULTIPLE_ID), }; // Policies for per-servant persistent POAs persistentPoaPolicies = new Policy[]{ rootPOA.create_lifespan_policy( LifespanPolicyValue.PERSISTENT), rootPOA.create_id_assignment_policy( IdAssignmentPolicyValue.USER_ID), rootPOA.create_servant_retention_policy( ServantRetentionPolicyValue.NON_RETAIN), rootPOA.create_request_processing_policy( RequestProcessingPolicyValue.USE_DEFAULT_SERVANT), rootPOA.create_id_uniqueness_policy( IdUniquenessPolicyValue.MULTIPLE_ID), }; // Create this POARegistry's ServantRegistry implementations registryWithTransientPOAPerServant = new ServantRegistryWithTransientPOAPerServant(); registryWithPersistentPOAPerServant = new ServantRegistryWithPersistentPOAPerServant(); } public synchronized void stop(final StopContext context) { transientPoaMap = null; persistentPoaMap = null; transientPoaPolicies = null; persistentPoaPolicies = null; } private static Policy[] concatPolicies(Policy[] policies1, Policy[] policies2) { Policy[] policies = new Policy[policies1.length + policies2.length]; int j = 0; for (int i = 0; i < policies1.length; i++, j++) { policies[j] = policies1[i]; } for (int i = 0; i < policies2.length; i++, j++) { policies[j] = policies2[i]; } return policies; } @Override public synchronized POARegistry getValue() throws IllegalStateException, IllegalArgumentException { return this; } static class PoaReferenceFactory implements ReferenceFactory { private final POA poa; private final Policy[] policies; PoaReferenceFactory(final POA poa, final Policy[] policies) { this.poa = poa; this.policies = policies; } PoaReferenceFactory(final POA poa) { this(poa, null); } public org.omg.CORBA.Object createReference(final String interfId) throws Exception { final org.omg.CORBA.Object corbaRef = poa.create_reference_with_id(EMPTY_BYTES, interfId); if (policies != null) { return corbaRef._set_policy_override(policies, SetOverrideType.ADD_OVERRIDE); } else { return corbaRef; } } public org.omg.CORBA.Object createReferenceWithId(final byte[] id, final String interfId) throws Exception { final org.omg.CORBA.Object corbaRef = poa.create_reference_with_id(id, interfId); if (policies != null) { return corbaRef._set_policy_override(policies, SetOverrideType.ADD_OVERRIDE); } else { return corbaRef; } } public POA getPOA() { return poa; } } /** * ServantRegistry with a transient POA per servant */ class ServantRegistryWithTransientPOAPerServant implements ServantRegistry { public ReferenceFactory bind(final String name, final Servant servant, final Policy[] policies) throws Exception { final Policy[] poaPolicies = concatPolicies(transientPoaPolicies, policies); final POA poa = rootPOA.getValue().create_POA(name, null, poaPolicies); transientPoaMap.put(name, poa); poa.set_servant(servant); poa.the_POAManager().activate(); return new PoaReferenceFactory(poa); // no servantName: in this case // name is the POA name } public ReferenceFactory bind(final String name, final Servant servant) throws Exception { final POA poa = rootPOA.getValue().create_POA(name, null, transientPoaPolicies); transientPoaMap.put(name, poa); poa.set_servant(servant); poa.the_POAManager().activate(); return new PoaReferenceFactory(poa); // no servantName: in this case // name is the POA name } public void unbind(final String name) throws Exception { final POA poa = transientPoaMap.remove(name); if (poa != null) { poa.the_POAManager().deactivate(false, true); poa.destroy(false, true); } } } /** * ServantRegistry with a persistent POA per servant */ class ServantRegistryWithPersistentPOAPerServant implements ServantRegistry { public ReferenceFactory bind(final String name, final Servant servant, final Policy[] policies) throws Exception { final Policy[] poaPolicies = concatPolicies(persistentPoaPolicies, policies); final POA poa = rootPOA.getValue().create_POA(name, null, poaPolicies); persistentPoaMap.put(name, poa); poa.set_servant(servant); poa.the_POAManager().activate(); return new PoaReferenceFactory(poa); // no servantName: in this case // name is the POA name } public ReferenceFactory bind(final String name, final Servant servant) throws Exception { final POA poa = rootPOA.getValue().create_POA(name, null, persistentPoaPolicies); persistentPoaMap.put(name, poa); poa.set_servant(servant); poa.the_POAManager().activate(); return new PoaReferenceFactory(poa); // no servantName: in this case // name is the POA name } public void unbind(final String name) throws Exception { final POA poa = persistentPoaMap.remove(name); if (poa != null) { poa.the_POAManager().deactivate(false, true); poa.destroy(false, true); } } } public ServantRegistry getRegistryWithTransientPOAPerServant() { return registryWithTransientPOAPerServant; } public ServantRegistry getRegistryWithPersistentPOAPerServant() { return registryWithPersistentPOAPerServant; } public InjectedValue getRootPOA() { return rootPOA; } }





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