/*
*
* 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.binding;
import java.security.AccessControlException;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.qpid.server.configuration.IllegalConfigurationException;
import org.apache.qpid.server.configuration.updater.VoidTask;
import org.apache.qpid.server.exchange.AbstractExchange;
import org.apache.qpid.server.exchange.ExchangeImpl;
import org.apache.qpid.server.filter.AMQInvalidArgumentException;
import org.apache.qpid.server.filter.FilterSupport;
import org.apache.qpid.server.logging.EventLogger;
import org.apache.qpid.server.logging.messages.BindingMessages;
import org.apache.qpid.server.logging.subjects.BindingLogSubject;
import org.apache.qpid.server.model.AbstractConfiguredObject;
import org.apache.qpid.server.model.Binding;
import org.apache.qpid.server.model.ConfiguredObject;
import org.apache.qpid.server.model.ManagedAttributeField;
import org.apache.qpid.server.model.Queue;
import org.apache.qpid.server.model.State;
import org.apache.qpid.server.model.StateTransition;
import org.apache.qpid.server.model.VirtualHost;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.util.StateChangeListener;
import org.apache.qpid.server.virtualhost.VirtualHostImpl;
public class BindingImpl
extends AbstractConfiguredObject<BindingImpl>
implements org.apache.qpid.server.model.Binding<BindingImpl>
{
private String _bindingKey;
private final AMQQueue _queue;
private final ExchangeImpl _exchange;
@ManagedAttributeField
private Map<String, Object> _arguments;
private final AtomicLong _matches = new AtomicLong();
private BindingLogSubject _logSubject;
final AtomicBoolean _deleted = new AtomicBoolean();
final CopyOnWriteArrayList<StateChangeListener<BindingImpl,State>> _stateChangeListeners =
new CopyOnWriteArrayList<StateChangeListener<BindingImpl, State>>();
public BindingImpl(Map<String, Object> attributes, AMQQueue queue, ExchangeImpl exchange)
{
super(parentsMap(queue,exchange),stripEmptyArguments(enhanceWithDurable(attributes, queue, exchange)));
_bindingKey = getName();
_queue = queue;
_exchange = exchange;
}
private static Map<String, Object> stripEmptyArguments(final Map<String, Object> attributes)
{
Map<String,Object> returnVal;
if(attributes != null
&& attributes.containsKey(Binding.ARGUMENTS)
&& (attributes.get(Binding.ARGUMENTS) instanceof Map)
&& ((Map)(attributes.get(Binding.ARGUMENTS))).isEmpty())
{
returnVal = new HashMap<>(attributes);
returnVal.remove(Binding.ARGUMENTS);
}
else
{
returnVal = attributes;
}
return returnVal;
}
@Override
protected void onOpen()
{
super.onOpen();
_logSubject = new BindingLogSubject(_bindingKey,_exchange,_queue);
getEventLogger().message(_logSubject, BindingMessages.CREATED(String.valueOf(getArguments()),
getArguments() != null
&& !getArguments().isEmpty()));
if(_exchange instanceof AbstractExchange)
{
((AbstractExchange)_exchange).doAddBinding(this);
}
}
@Override
protected void onCreate()
{
super.onCreate();
try
{
_queue.getVirtualHost().getSecurityManager().authoriseCreateBinding(this);
}
catch(AccessControlException e)
{
deleted();
throw e;
}
if (isDurable())
{
_queue.getVirtualHost().getDurableConfigurationStore().create(asObjectRecord());
}
}
private static Map<String, Object> enhanceWithDurable(Map<String, Object> attributes,
final AMQQueue queue,
final ExchangeImpl exchange)
{
if(!attributes.containsKey(DURABLE))
{
attributes = new HashMap(attributes);
attributes.put(DURABLE, queue.isDurable() && exchange.isDurable());
}
return attributes;
}
public String getBindingKey()
{
return _bindingKey;
}
public AMQQueue getAMQQueue()
{
return _queue;
}
@Override
public Queue<?> getQueue()
{
return _queue;
}
@Override
public ExchangeImpl<?> getExchange()
{
return _exchange;
}
public Map<String, Object> getArguments()
{
return _arguments;
}
public void incrementMatches()
{
_matches.incrementAndGet();
}
public long getMatches()
{
return _matches.get();
}
@Override
public <C extends ConfiguredObject> Collection<C> getChildren(final Class<C> clazz)
{
return Collections.emptySet();
}
@Override
public boolean equals(final Object o)
{
if (this == o)
{
return true;
}
if (!(o instanceof BindingImpl))
{
return false;
}
final BindingImpl binding = (BindingImpl) o;
return (_bindingKey == null ? binding.getBindingKey() == null : _bindingKey.equals(binding.getBindingKey()))
&& (_exchange == null ? binding.getExchange() == null : _exchange.equals(binding.getExchange()))
&& (_queue == null ? binding.getAMQQueue() == null : _queue.equals(binding.getAMQQueue()));
}
@Override
public int hashCode()
{
int result = _bindingKey == null ? 1 : _bindingKey.hashCode();
result = 31 * result + (_queue == null ? 3 : _queue.hashCode());
result = 31 * result + (_exchange == null ? 5 : _exchange.hashCode());
return result;
}
public String toString()
{
return "Binding{bindingKey="+_bindingKey+", exchange="+_exchange+", queue="+_queue+", id= " + getId() + " }";
}
@StateTransition(currentState = State.ACTIVE, desiredState = State.DELETED)
private void doDelete()
{
if(_deleted.compareAndSet(false,true))
{
for(StateChangeListener<BindingImpl,State> listener : _stateChangeListeners)
{
listener.stateChanged(this, State.ACTIVE, State.DELETED);
}
getEventLogger().message(_logSubject, BindingMessages.DELETED());
}
deleted();
setState(State.DELETED);
}
@StateTransition(currentState = State.UNINITIALIZED, desiredState = State.ACTIVE)
private void activate()
{
setState(State.ACTIVE);
}
public void addStateChangeListener(StateChangeListener<BindingImpl,State> listener)
{
_stateChangeListeners.add(listener);
}
public void removeStateChangeListener(StateChangeListener<BindingImpl,State> listener)
{
_stateChangeListeners.remove(listener);
}
private EventLogger getEventLogger()
{
return _exchange.getEventLogger();
}
public void setArguments(final Map<String, Object> arguments)
{
runTask(new VoidTask()
{
@Override
public void execute()
{
_arguments = arguments;
BindingImpl.super.setAttribute(ARGUMENTS, getActualAttributes().get(ARGUMENTS), arguments);
if (isDurable())
{
VirtualHostImpl<?, ?, ?> vhost =
(VirtualHostImpl<?, ?, ?>) _exchange.getParent(VirtualHost.class);
vhost.getDurableConfigurationStore().update(true, asObjectRecord());
}
}
}
);
}
@Override
public void validateOnCreate()
{
AMQQueue queue = getAMQQueue();
Map<String, Object> arguments = getArguments();
if (arguments!=null && !arguments.isEmpty() && FilterSupport.argumentsContainFilter(arguments))
{
try
{
FilterSupport.createMessageFilter(arguments, queue);
}
catch (AMQInvalidArgumentException e)
{
throw new IllegalConfigurationException(e.getMessage(), e);
}
}
}
}