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*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
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package org.apache.qpid.server.protocol.v1_0;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.qpid.AMQException;
import org.apache.qpid.AMQInternalException;
import org.apache.qpid.AMQSecurityException;
import org.apache.qpid.amqp_1_0.transport.DeliveryStateHandler;
import org.apache.qpid.amqp_1_0.transport.LinkEndpoint;
import org.apache.qpid.amqp_1_0.transport.SendingLinkEndpoint;
import org.apache.qpid.amqp_1_0.transport.SendingLinkListener;
import org.apache.qpid.amqp_1_0.type.AmqpErrorException;
import org.apache.qpid.amqp_1_0.type.Binary;
import org.apache.qpid.amqp_1_0.type.DeliveryState;
import org.apache.qpid.amqp_1_0.type.Outcome;
import org.apache.qpid.amqp_1_0.type.Symbol;
import org.apache.qpid.amqp_1_0.type.UnsignedInteger;
import org.apache.qpid.amqp_1_0.type.messaging.Accepted;
import org.apache.qpid.amqp_1_0.type.messaging.ExactSubjectFilter;
import org.apache.qpid.amqp_1_0.type.messaging.Filter;
import org.apache.qpid.amqp_1_0.type.messaging.MatchingSubjectFilter;
import org.apache.qpid.amqp_1_0.type.messaging.Modified;
import org.apache.qpid.amqp_1_0.type.messaging.NoLocalFilter;
import org.apache.qpid.amqp_1_0.type.messaging.Released;
import org.apache.qpid.amqp_1_0.type.messaging.Source;
import org.apache.qpid.amqp_1_0.type.messaging.StdDistMode;
import org.apache.qpid.amqp_1_0.type.messaging.TerminusDurability;
import org.apache.qpid.amqp_1_0.type.transport.AmqpError;
import org.apache.qpid.amqp_1_0.type.transport.Detach;
import org.apache.qpid.amqp_1_0.type.transport.Error;
import org.apache.qpid.amqp_1_0.type.transport.Transfer;
import org.apache.qpid.filter.SelectorParsingException;
import org.apache.qpid.filter.selector.ParseException;
import org.apache.qpid.server.binding.Binding;
import org.apache.qpid.server.exchange.DirectExchange;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.exchange.TopicExchange;
import org.apache.qpid.server.filter.JMSSelectorFilter;
import org.apache.qpid.server.filter.SimpleFilterManager;
import org.apache.qpid.server.model.UUIDGenerator;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.AMQQueueFactory;
import org.apache.qpid.server.queue.QueueEntry;
import org.apache.qpid.server.txn.AutoCommitTransaction;
import org.apache.qpid.server.txn.ServerTransaction;
import org.apache.qpid.server.virtualhost.VirtualHost;
public class SendingLink_1_0 implements SendingLinkListener, Link_1_0, DeliveryStateHandler
{
private VirtualHost _vhost;
private SendingDestination _destination;
private Subscription_1_0 _subscription;
private boolean _draining;
private final Map<Binary, QueueEntry> _unsettledMap =
new HashMap<Binary, QueueEntry>();
private final ConcurrentHashMap<Binary, UnsettledAction> _unsettledActionMap =
new ConcurrentHashMap<Binary, UnsettledAction>();
private volatile SendingLinkAttachment _linkAttachment;
private TerminusDurability _durability;
private List<QueueEntry> _resumeFullTransfers = new ArrayList<QueueEntry>();
private List<Binary> _resumeAcceptedTransfers = new ArrayList<Binary>();
private Runnable _closeAction;
public SendingLink_1_0(final SendingLinkAttachment linkAttachment,
final VirtualHost vhost,
final SendingDestination destination)
throws AmqpErrorException
{
_vhost = vhost;
_destination = destination;
_linkAttachment = linkAttachment;
final Source source = (Source) linkAttachment.getSource();
_durability = source.getDurable();
linkAttachment.setDeliveryStateHandler(this);
QueueDestination qd = null;
AMQQueue queue = null;
boolean noLocal = false;
JMSSelectorFilter messageFilter = null;
if(destination instanceof QueueDestination)
{
queue = ((QueueDestination) _destination).getQueue();
if(queue.getAvailableAttributes().contains("topic"))
{
source.setDistributionMode(StdDistMode.COPY);
}
qd = (QueueDestination) destination;
Map<Symbol,Filter> filters = source.getFilter();
Map<Symbol,Filter> actualFilters = new HashMap<Symbol,Filter>();
if(filters != null)
{
for(Map.Entry<Symbol,Filter> entry : filters.entrySet())
{
if(entry.getValue() instanceof NoLocalFilter)
{
actualFilters.put(entry.getKey(), entry.getValue());
noLocal = true;
}
else if(messageFilter == null && entry.getValue() instanceof org.apache.qpid.amqp_1_0.type.messaging.JMSSelectorFilter)
{
org.apache.qpid.amqp_1_0.type.messaging.JMSSelectorFilter selectorFilter = (org.apache.qpid.amqp_1_0.type.messaging.JMSSelectorFilter) entry.getValue();
try
{
messageFilter = new JMSSelectorFilter(selectorFilter.getValue());
actualFilters.put(entry.getKey(), entry.getValue());
}
catch (ParseException e)
{
Error error = new Error();
error.setCondition(AmqpError.INVALID_FIELD);
error.setDescription("Invalid JMS Selector: " + selectorFilter.getValue());
error.setInfo(Collections.singletonMap(Symbol.valueOf("field"), Symbol.valueOf("filter")));
throw new AmqpErrorException(error);
}
catch (SelectorParsingException e)
{
Error error = new Error();
error.setCondition(AmqpError.INVALID_FIELD);
error.setDescription("Invalid JMS Selector: " + selectorFilter.getValue());
error.setInfo(Collections.singletonMap(Symbol.valueOf("field"), Symbol.valueOf("filter")));
throw new AmqpErrorException(error);
}
}
}
}
source.setFilter(actualFilters.isEmpty() ? null : actualFilters);
_subscription = new Subscription_1_0(this, qd, source.getDistributionMode() != StdDistMode.COPY);
}
else if(destination instanceof ExchangeDestination)
{
try
{
ExchangeDestination exchangeDestination = (ExchangeDestination) destination;
boolean isDurable = exchangeDestination.getDurability() == TerminusDurability.CONFIGURATION
|| exchangeDestination.getDurability() == TerminusDurability.UNSETTLED_STATE;
String name;
if(isDurable)
{
String remoteContainerId = getEndpoint().getSession().getConnection().getRemoteContainerId();
remoteContainerId = remoteContainerId.replace("_","__").replace(".", "_:");
String endpointName = linkAttachment.getEndpoint().getName();
endpointName = endpointName
.replace("_", "__")
.replace(".", "_:")
.replace("(", "_O")
.replace(")", "_C")
.replace("<", "_L")
.replace(">", "_R");
name = "qpid_/" + remoteContainerId + "_/" + endpointName;
}
else
{
name = UUID.randomUUID().toString();
}
queue = _vhost.getQueue(name);
Exchange exchange = exchangeDestination.getExchange();
if(queue == null)
{
queue = _vhost.createQueue(
UUIDGenerator.generateQueueUUID(name, _vhost.getName()),
name,
isDurable,
null,
true,
true,
true,
Collections.EMPTY_MAP);
}
else
{
List<Binding> bindings = queue.getBindings();
List<Binding> bindingsToRemove = new ArrayList<Binding>();
for(Binding existingBinding : bindings)
{
if(existingBinding.getExchange() != _vhost.getDefaultExchange()
&& existingBinding.getExchange() != exchange)
{
bindingsToRemove.add(existingBinding);
}
}
for(Binding existingBinding : bindingsToRemove)
{
existingBinding.getExchange().removeBinding(existingBinding);
}
}
String binding = "";
Map<Symbol,Filter> filters = source.getFilter();
Map<Symbol,Filter> actualFilters = new HashMap<Symbol,Filter>();
boolean hasBindingFilter = false;
if(filters != null && !filters.isEmpty())
{
for(Map.Entry<Symbol,Filter> entry : filters.entrySet())
{
if(!hasBindingFilter
&& entry.getValue() instanceof ExactSubjectFilter
&& exchange.getType() == DirectExchange.TYPE)
{
ExactSubjectFilter filter = (ExactSubjectFilter) filters.values().iterator().next();
source.setFilter(filters);
binding = filter.getValue();
actualFilters.put(entry.getKey(), entry.getValue());
hasBindingFilter = true;
}
else if(!hasBindingFilter
&& entry.getValue() instanceof MatchingSubjectFilter
&& exchange.getType() == TopicExchange.TYPE)
{
MatchingSubjectFilter filter = (MatchingSubjectFilter) filters.values().iterator().next();
source.setFilter(filters);
binding = filter.getValue();
actualFilters.put(entry.getKey(), entry.getValue());
hasBindingFilter = true;
}
else if(entry.getValue() instanceof NoLocalFilter)
{
actualFilters.put(entry.getKey(), entry.getValue());
noLocal = true;
}
else if(messageFilter == null && entry.getValue() instanceof org.apache.qpid.amqp_1_0.type.messaging.JMSSelectorFilter)
{
org.apache.qpid.amqp_1_0.type.messaging.JMSSelectorFilter selectorFilter = (org.apache.qpid.amqp_1_0.type.messaging.JMSSelectorFilter) entry.getValue();
try
{
messageFilter = new JMSSelectorFilter(selectorFilter.getValue());
actualFilters.put(entry.getKey(), entry.getValue());
}
catch (ParseException e)
{
Error error = new Error();
error.setCondition(AmqpError.INVALID_FIELD);
error.setDescription("Invalid JMS Selector: " + selectorFilter.getValue());
error.setInfo(Collections.singletonMap(Symbol.valueOf("field"), Symbol.valueOf("filter")));
throw new AmqpErrorException(error);
}
catch (SelectorParsingException e)
{
Error error = new Error();
error.setCondition(AmqpError.INVALID_FIELD);
error.setDescription("Invalid JMS Selector: " + selectorFilter.getValue());
error.setInfo(Collections.singletonMap(Symbol.valueOf("field"), Symbol.valueOf("filter")));
throw new AmqpErrorException(error);
}
}
}
}
source.setFilter(actualFilters.isEmpty() ? null : actualFilters);
exchange.addBinding(binding,queue,null);
source.setDistributionMode(StdDistMode.COPY);
if(!isDurable)
{
final String queueName = name;
final AMQQueue tempQueue = queue;
final Connection_1_0.Task deleteQueueTask =
new Connection_1_0.Task()
{
public void doTask(Connection_1_0 session)
{
if (_vhost.getQueue(queueName) == tempQueue)
{
try
{
_vhost.removeQueue(tempQueue);
}
catch (AMQException e)
{
e.printStackTrace(); //TODO.
}
}
}
};
getSession().getConnection().addConnectionCloseTask(deleteQueueTask);
queue.addQueueDeleteTask(new AMQQueue.Task()
{
public void doTask(AMQQueue queue)
{
getSession().getConnection().removeConnectionCloseTask(deleteQueueTask);
}
});
}
qd = new QueueDestination(queue);
}
catch (AMQSecurityException e)
{
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
catch (AMQInternalException e)
{
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
} catch (AMQException e)
{
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
_subscription = new Subscription_1_0(this, qd, true);
}
if(_subscription != null)
{
_subscription.setNoLocal(noLocal);
if(messageFilter!=null)
{
_subscription.setFilters(new SimpleFilterManager(messageFilter));
}
try
{
queue.registerSubscription(_subscription, false);
}
catch (AMQException e)
{
e.printStackTrace(); //TODO
}
}
}
public void resume(SendingLinkAttachment linkAttachment)
{
_linkAttachment = linkAttachment;
}
public void remoteDetached(final LinkEndpoint endpoint, final Detach detach)
{
//TODO
// if not durable or close
if(!TerminusDurability.UNSETTLED_STATE.equals(_durability))
{
AMQQueue queue = _subscription.getQueue();
try
{
queue.unregisterSubscription(_subscription);
}
catch (AMQException e)
{
e.printStackTrace(); //TODO
}
Modified state = new Modified();
state.setDeliveryFailed(true);
for(UnsettledAction action : _unsettledActionMap.values())
{
action.process(state,Boolean.TRUE);
}
_unsettledActionMap.clear();
endpoint.close();
if(_destination instanceof ExchangeDestination
&& (_durability == TerminusDurability.CONFIGURATION
|| _durability == TerminusDurability.UNSETTLED_STATE))
{
try
{
queue.getVirtualHost().removeQueue(queue);
}
catch(AMQException e)
{
e.printStackTrace(); // TODO - Implement
}
}
if(_closeAction != null)
{
_closeAction.run();
}
}
else if(detach == null || detach.getError() != null)
{
_linkAttachment = null;
_subscription.flowStateChanged();
}
else
{
endpoint.detach();
}
}
public void start()
{
//TODO
}
public SendingLinkEndpoint getEndpoint()
{
return _linkAttachment == null ? null : _linkAttachment.getEndpoint() ;
}
public Session_1_0 getSession()
{
return _linkAttachment == null ? null : _linkAttachment.getSession();
}
public void flowStateChanged()
{
if(Boolean.TRUE.equals(getEndpoint().getDrain())
&& hasCredit())
{
_draining = true;
}
while(!_resumeAcceptedTransfers.isEmpty() && getEndpoint().hasCreditToSend())
{
Accepted accepted = new Accepted();
synchronized(getLock())
{
Transfer xfr = new Transfer();
Binary dt = _resumeAcceptedTransfers.remove(0);
xfr.setDeliveryTag(dt);
xfr.setState(accepted);
xfr.setResume(Boolean.TRUE);
getEndpoint().transfer(xfr);
}
}
if(_resumeAcceptedTransfers.isEmpty())
{
_subscription.flowStateChanged();
}
}
boolean hasCredit()
{
return getEndpoint().getLinkCredit().compareTo(UnsignedInteger.ZERO) > 0;
}
public boolean isDraining()
{
return false; //TODO
}
public boolean drained()
{
if(getEndpoint() != null)
{
synchronized(getEndpoint().getLock())
{
if(_draining)
{
//TODO
getEndpoint().drained();
_draining = false;
return true;
}
else
{
return false;
}
}
}
else
{
return false;
}
}
public void addUnsettled(Binary tag, UnsettledAction unsettledAction, QueueEntry queueEntry)
{
_unsettledActionMap.put(tag,unsettledAction);
if(getTransactionId() == null)
{
_unsettledMap.put(tag, queueEntry);
}
}
public void removeUnsettled(Binary tag)
{
_unsettledActionMap.remove(tag);
}
public void handle(Binary deliveryTag, DeliveryState state, Boolean settled)
{
UnsettledAction action = _unsettledActionMap.get(deliveryTag);
boolean localSettle = false;
if(action != null)
{
localSettle = action.process(state, settled);
if(localSettle && !Boolean.TRUE.equals(settled))
{
_linkAttachment.updateDisposition(deliveryTag, state, true);
}
}
if(Boolean.TRUE.equals(settled) || localSettle)
{
_unsettledActionMap.remove(deliveryTag);
_unsettledMap.remove(deliveryTag);
}
}
ServerTransaction getTransaction(Binary transactionId)
{
return _linkAttachment.getSession().getTransaction(transactionId);
}
public Binary getTransactionId()
{
SendingLinkEndpoint endpoint = getEndpoint();
return endpoint == null ? null : endpoint.getTransactionId();
}
public synchronized Object getLock()
{
return _linkAttachment == null ? this : getEndpoint().getLock();
}
public boolean isDetached()
{
return _linkAttachment == null || getEndpoint().isDetached();
}
public boolean isAttached()
{
return _linkAttachment != null && getEndpoint().isAttached();
}
public synchronized void setLinkAttachment(SendingLinkAttachment linkAttachment)
{
if(_subscription.isActive())
{
_subscription.suspend();
}
_linkAttachment = linkAttachment;
SendingLinkEndpoint endpoint = linkAttachment.getEndpoint();
endpoint.setDeliveryStateHandler(this);
Map initialUnsettledMap = endpoint.getInitialUnsettledMap();
Map<Binary, QueueEntry> unsettledCopy = new HashMap<Binary, QueueEntry>(_unsettledMap);
_resumeAcceptedTransfers.clear();
_resumeFullTransfers.clear();
for(Map.Entry<Binary, QueueEntry> entry : unsettledCopy.entrySet())
{
Binary deliveryTag = entry.getKey();
final QueueEntry queueEntry = entry.getValue();
if(initialUnsettledMap == null || !initialUnsettledMap.containsKey(deliveryTag))
{
queueEntry.setRedelivered();
queueEntry.release();
_unsettledMap.remove(deliveryTag);
}
else if(initialUnsettledMap != null && (initialUnsettledMap.get(deliveryTag) instanceof Outcome))
{
Outcome outcome = (Outcome) initialUnsettledMap.get(deliveryTag);
if(outcome instanceof Accepted)
{
AutoCommitTransaction txn = new AutoCommitTransaction(_vhost.getMessageStore());
if(_subscription.acquires())
{
txn.dequeue(Collections.singleton(queueEntry),
new ServerTransaction.Action()
{
public void postCommit()
{
queueEntry.discard();
}
public void onRollback()
{
//To change body of implemented methods use File | Settings | File Templates.
}
});
}
}
else if(outcome instanceof Released)
{
AutoCommitTransaction txn = new AutoCommitTransaction(_vhost.getMessageStore());
if(_subscription.acquires())
{
txn.dequeue(Collections.singleton(queueEntry),
new ServerTransaction.Action()
{
public void postCommit()
{
queueEntry.release();
}
public void onRollback()
{
//To change body of implemented methods use File | Settings | File Templates.
}
});
}
}
//_unsettledMap.remove(deliveryTag);
initialUnsettledMap.remove(deliveryTag);
_resumeAcceptedTransfers.add(deliveryTag);
}
else
{
_resumeFullTransfers.add(queueEntry);
// exists in receivers map, but not yet got an outcome ... should resend with resume = true
}
// TODO - else
}
}
public Map getUnsettledOutcomeMap()
{
Map<Binary, QueueEntry> unsettled = new HashMap<Binary, QueueEntry>(_unsettledMap);
for(Map.Entry<Binary, QueueEntry> entry : unsettled.entrySet())
{
entry.setValue(null);
}
return unsettled;
}
public void setCloseAction(Runnable action)
{
_closeAction = action;
}
}