package org.jacorb.notification.servant;
/*
* JacORB - a free Java ORB
*
* Copyright (C) 1997-2003 Gerald Brose.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.jacorb.config.*;
import org.jacorb.notification.NoTranslationException;
import org.jacorb.notification.OfferManager;
import org.jacorb.notification.SubscriptionManager;
import org.jacorb.notification.TypedEventMessage;
import org.jacorb.notification.engine.TaskProcessor;
import org.jacorb.notification.interfaces.Message;
import org.jacorb.notification.queue.MessageQueueAdapter;
import org.jacorb.notification.queue.RWLockEventQueueDecorator;
import org.jacorb.notification.util.PropertySet;
import org.jacorb.notification.util.PropertySetAdapter;
import org.omg.CORBA.ARG_OUT;
import org.omg.CORBA.Any;
import org.omg.CORBA.BooleanHolder;
import org.omg.CORBA.InterfaceDef;
import org.omg.CORBA.InterfaceDefHelper;
import org.omg.CORBA.NO_IMPLEMENT;
import org.omg.CORBA.NVList;
import org.omg.CORBA.ORB;
import org.omg.CORBA.OperationDescription;
import org.omg.CORBA.ParameterMode;
import org.omg.CORBA.Repository;
import org.omg.CORBA.ServerRequest;
import org.omg.CORBA.InterfaceDefPackage.FullInterfaceDescription;
import org.omg.CosEventChannelAdmin.AlreadyConnected;
import org.omg.CosEventComm.Disconnected;
import org.omg.CosEventComm.PullConsumer;
import org.omg.CosNotification.DiscardPolicy;
import org.omg.CosNotification.EventTypeHelper;
import org.omg.CosNotification.OrderPolicy;
import org.omg.CosNotification.Property;
import org.omg.CosNotifyChannelAdmin.ConsumerAdmin;
import org.omg.CosNotifyChannelAdmin.ProxyType;
import org.omg.CosTypedNotifyChannelAdmin.TypedProxyPullSupplierOperations;
import org.omg.CosTypedNotifyChannelAdmin.TypedProxyPullSupplierPOATie;
import org.omg.DynamicAny.DynAny;
import org.omg.DynamicAny.DynAnyFactory;
import org.omg.DynamicAny.DynAnyFactoryPackage.InconsistentTypeCode;
import org.omg.PortableServer.DynamicImplementation;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.Servant;
/**
* @jmx.mbean extends = "AbstractProxySupplierMBean"
* @jboss.xmbean
*
* @author Alphonse Bendt
* @version $Id$
*/
public class TypedProxyPullSupplierImpl extends AbstractProxySupplier implements
TypedProxyPullSupplierOperations, ITypedProxy, TypedProxyPullSupplierImplMBean
{
private final Any trueAny_;
private final Any falseAny_;
private final DynAnyFactory dynAnyFactory_;
private final String supportedInterface_;
private PullConsumer pullConsumer_;
private TypedProxyPullSupplier typedProxyPullSupplierServant_;
private org.omg.CORBA.Object typedProxyPullSupplier_;
private final Map messageQueueMap_;
private final Map invalidResponses_;
private final Repository repository_;
private class TypedProxyPullSupplier extends DynamicImplementation
{
private final String[] supportedInterfaces_ = new String[] { supportedInterface_ };
public void invoke(final ServerRequest request)
{
String _operation = request.operation();
boolean _isTryOp = false;
if (_operation.startsWith("try_"))
{
_isTryOp = true;
// cut 'try_' prefix
_operation = _operation.substring(4);
}
try
{
final Message _mesg;
final MessageQueueAdapter _queue = (MessageQueueAdapter) messageQueueMap_
.get(_operation);
if (_isTryOp)
{
_mesg = _queue.getMessageNoBlock();
}
else
{
_mesg = _queue.getMessageBlocking();
}
try
{
final NVList _args;
if (_mesg == null)
{
_args = (NVList) invalidResponses_.get(_operation);
if (_isTryOp)
{
request.set_result(falseAny_);
}
}
else
{
_args = prepareResponse(_mesg);
if (_isTryOp)
{
request.set_result(trueAny_);
}
}
request.arguments(_args);
} finally
{
if (_mesg != null)
{
_mesg.dispose();
}
}
} catch (InterruptedException e)
{
// ignore
}
}
public String[] _all_interfaces(POA poa, byte[] oid)
{
return supportedInterfaces_;
}
public POA _default_POA()
{
return getPOA();
}
}
private final NVList prepareResponse(Message mesg)
{
try
{
final Property[] _props = mesg.toTypedEvent();
final NVList _args = getORB().create_list(_props.length - 1);
// start at index 1 here. index 0 contains the operation name
for (int x = 1; x < _props.length; ++x)
{
_args.add_value(_props[x].name, _props[x].value, ARG_OUT.value);
}
return _args;
} catch (NoTranslationException e)
{
// cannot happen here
// as there are no nontranslatable Messages queued.
throw new RuntimeException();
}
}
public TypedProxyPullSupplierImpl(ITypedAdmin admin, ConsumerAdmin consumerAdmin, ORB orb,
POA poa, Configuration conf, TaskProcessor taskProcessor, OfferManager offerManager,
SubscriptionManager subscriptionManager, DynAnyFactory dynAnyFactory,
Repository repository) throws ConfigurationException
{
super(admin, orb, poa, conf, taskProcessor, offerManager,
subscriptionManager, consumerAdmin);
trueAny_ = orb.create_any();
falseAny_ = orb.create_any();
trueAny_.insert_boolean(true);
falseAny_.insert_boolean(false);
supportedInterface_ = admin.getSupportedInterface();
dynAnyFactory_ = dynAnyFactory;
repository_ = repository;
qosSettings_.addPropertySetListener(
new String[] { OrderPolicy.value, DiscardPolicy.value }, reconfigureEventQueues_);
try
{
FullInterfaceDescription interfaceDescription = getInterfaceDescription();
validateInterface(interfaceDescription);
messageQueueMap_ = Collections
.unmodifiableMap(newMessageQueueMap(interfaceDescription));
invalidResponses_ = Collections
.unmodifiableMap(newInvalidResponseMap(interfaceDescription));
} catch (InconsistentTypeCode e)
{
throw new RuntimeException();
}
}
private void ensureMethodOnlyUsesOutParams(OperationDescription operation)
throws IllegalArgumentException
{
int _noOfParameters = operation.parameters.length;
for (int x = 0; x < _noOfParameters; ++x)
{
switch (operation.parameters[x].mode.value()) {
case ParameterMode._PARAM_IN:
// fallthrough
case ParameterMode._PARAM_INOUT:
throw new IllegalArgumentException("only OUT params allowed");
case ParameterMode._PARAM_OUT:
break;
}
}
}
private void prepareInvalidResponse(Map map, OperationDescription operation)
throws InconsistentTypeCode
{
final NVList _expectedParams = getORB().create_list(operation.parameters.length);
for (int x = 0; x < operation.parameters.length; ++x)
{
final DynAny _dynAny = dynAnyFactory_
.create_dyn_any_from_type_code(operation.parameters[x].type);
_expectedParams
.add_value(operation.parameters[x].name, _dynAny.to_any(), ARG_OUT.value);
}
map.put(operation.name, _expectedParams);
}
private final Map newMessageQueueMap(FullInterfaceDescription interfaceDescription)
{
Map map = new HashMap();
for (int x = 0; x < interfaceDescription.operations.length; ++x)
{
if (!interfaceDescription.operations[x].name.startsWith("try_"))
{
logger_.debug("Create Queue for Operation: "
+ interfaceDescription.operations[x].name);
MessageQueueAdapter _messageQueue =
getMessageQueueFactory().newMessageQueue(qosSettings_);
map.put(interfaceDescription.operations[x].name,
new RWLockEventQueueDecorator(_messageQueue));
}
}
return map;
}
private final Map newInvalidResponseMap(FullInterfaceDescription interfaceDescription)
throws InconsistentTypeCode
{
Map map = new HashMap();
for (int x = 0; x < interfaceDescription.operations.length; ++x)
{
if (!interfaceDescription.operations[x].name.startsWith("try_"))
{
prepareInvalidResponse(map, interfaceDescription.operations[x]);
}
}
return map;
}
private final void validateInterface(FullInterfaceDescription interfaceDescription)
{
for (int x = 0; x < interfaceDescription.operations.length; ++x)
{
ensureMethodOnlyUsesOutParams(interfaceDescription.operations[x]);
}
}
private FullInterfaceDescription getInterfaceDescription()
{
InterfaceDef _interfaceDef = InterfaceDefHelper.narrow(repository_
.lookup_id(supportedInterface_));
return _interfaceDef.describe_interface();
}
private final void configureEventQueue()
{
try
{
Iterator i = messageQueueMap_.keySet().iterator();
while (i.hasNext())
{
String _key = (String) i.next();
RWLockEventQueueDecorator _queueAdapter =
(RWLockEventQueueDecorator) messageQueueMap_.get(_key);
MessageQueueAdapter _newQueue = getMessageQueueFactory().newMessageQueue(qosSettings_);
_queueAdapter.replaceDelegate(_newQueue);
}
} catch (InterruptedException e)
{
throw new RuntimeException(e.toString());
}
}
public int getPendingMessagesCount()
{
try
{
Iterator i = messageQueueMap_.keySet().iterator();
int _count = 0;
while (i.hasNext())
{
String _key = (String) i.next();
RWLockEventQueueDecorator _queueAdapter =
(RWLockEventQueueDecorator) messageQueueMap_.get(_key);
_count += _queueAdapter.getPendingMessagesCount();
}
return _count;
} catch (InterruptedException e)
{
return -1;
}
}
private PropertySetAdapter reconfigureEventQueues_ = new PropertySetAdapter()
{
public void actionPropertySetChanged(PropertySet source)
{
configureEventQueue();
}
};
public Any pull() throws Disconnected
{
throw new NO_IMPLEMENT();
}
public Any try_pull(BooleanHolder booleanHolder) throws Disconnected
{
throw new NO_IMPLEMENT();
}
public void disconnect_pull_supplier()
{
destroy();
}
public void connect_typed_pull_consumer(PullConsumer pullConsumer) throws AlreadyConnected
{
checkIsNotConnected();
connectClient(pullConsumer);
pullConsumer_ = pullConsumer;
}
public org.omg.CORBA.Object get_typed_supplier()
{
if (typedProxyPullSupplierServant_ == null)
{
typedProxyPullSupplierServant_ = new TypedProxyPullSupplier();
typedProxyPullSupplier_ = typedProxyPullSupplierServant_._this_object(getORB());
}
return typedProxyPullSupplier_;
}
public ProxyType MyType()
{
return ProxyType.PULL_TYPED;
}
public Servant newServant()
{
return new TypedProxyPullSupplierPOATie(this);
}
public void queueMessage(Message message)
{
try
{
Property[] _props = message.toTypedEvent();
final String _fullQualifiedOperation;
if (TypedEventMessage.OPERATION_NAME.equals(_props[0].name))
{
_fullQualifiedOperation = _props[0].value.extract_string();
}
else if (TypedEventMessage.EVENT_TYPE.equals(_props[0].name))
{
_fullQualifiedOperation = EventTypeHelper.extract(_props[0].value).type_name;
}
else
{
throw new IllegalArgumentException();
}
int idx = _fullQualifiedOperation.lastIndexOf("::");
String _operation = _fullQualifiedOperation.substring(idx + 2);
final Message _clonedMessage = (Message) message.clone();
try
{
((MessageQueueAdapter) messageQueueMap_.get(_operation)).enqeue(_clonedMessage);
} catch (InterruptedException e)
{
_clonedMessage.dispose();
}
} catch (NoTranslationException e)
{
// ignore
// Message is not delivered to the connected Consumer
}
}
public void deliverPendingData()
{
// No Op as this Proxy is a PullSupplier
}
public void disconnectClient()
{
pullConsumer_.disconnect_pull_consumer();
pullConsumer_ = null;
}
protected long getCost()
{
return 0;
}
/**
* @jmx.managed-attribute
* access = "read-only"
*/
public String getSupportedInterface()
{
return supportedInterface_;
}
}