/*
* 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
* <p/>
* <ul>
* <li>a <code>ServantRegistry</code> with a transient POA per servant;</li>
* <li>a <code>ServantRegistry</code> with persistent POA per servant.</li>
* </ul>
* <p/>
* CORBA servants registered with any of these
* <code>ServantRegistry</code> instances will receive IIOP invocations.
*
* @author <a href="mailto:reverbel@ime.usp.br">Francisco Reverbel</a>
*/
public class POARegistry implements Service<POARegistry> {
public static final ServiceName SERVICE_NAME = ServiceName.JBOSS.append("ejb", "iiop", "POARegistry");
public static final byte[] EMPTY_BYTES = {};
/**
* The root POA. *
*/
private final InjectedValue<POA> rootPOA = new InjectedValue<POA>();
/**
* A ServantRegistry with a transient POA per servant.
*/
private ServantRegistry registryWithTransientPOAPerServant;
/**
* The transient POA map used by the ServantRegistry above.
*/
private Map<String, POA> 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<String, POA> 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<String, POA>());
persistentPoaMap = Collections.synchronizedMap(new HashMap<String, POA>());
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<POA> getRootPOA() {
return rootPOA;
}
}