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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
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package org.apache.qpid.server.model.adapter;
import java.security.Principal;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.log4j.Logger;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.server.model.AbstractConfiguredObject;
import org.apache.qpid.server.model.ConfiguredObject;
import org.apache.qpid.server.model.Connection;
import org.apache.qpid.server.model.Port;
import org.apache.qpid.server.model.Session;
import org.apache.qpid.server.model.State;
import org.apache.qpid.server.model.StateTransition;
import org.apache.qpid.server.model.Transport;
import org.apache.qpid.server.protocol.AMQConnectionModel;
import org.apache.qpid.server.protocol.AMQSessionModel;
import org.apache.qpid.server.protocol.SessionModelListener;
import org.apache.qpid.server.util.Action;
public final class ConnectionAdapter extends AbstractConfiguredObject<ConnectionAdapter> implements Connection<ConnectionAdapter>,
SessionModelListener
{
private static final Logger LOGGER = Logger.getLogger(ConnectionAdapter.class);
private final Action _underlyingConnectionDeleteTask;
private final AtomicBoolean _underlyingClosed = new AtomicBoolean(false);
private AMQConnectionModel _underlyingConnection;
public ConnectionAdapter(final AMQConnectionModel conn)
{
super(parentsMap(conn.getVirtualHost()),createAttributes(conn));
_underlyingConnection = conn;
// Used to allow the protocol layers to tell the model they have been deleted
_underlyingConnectionDeleteTask = new Action()
{
@Override
public void performAction(final Object object)
{
conn.removeDeleteTask(this);
_underlyingClosed.set(true);
deleted();
}
};
conn.addDeleteTask(_underlyingConnectionDeleteTask);
conn.addSessionListener(this);
setState(State.ACTIVE);
}
private static Map<String, Object> createAttributes(final AMQConnectionModel _connection)
{
Map<String,Object> attributes = new HashMap<String, Object>();
attributes.put(ID, UUID.randomUUID());
attributes.put(NAME, _connection.getRemoteAddressString().replaceAll("/", ""));
attributes.put(DURABLE, false);
return attributes;
}
@Override
public String getClientId()
{
return _underlyingConnection.getClientId();
}
@Override
public String getClientVersion()
{
return _underlyingConnection.getClientVersion();
}
@Override
public boolean isIncoming()
{
return true;
}
@Override
public String getLocalAddress()
{
return null;
}
@Override
public String getPrincipal()
{
final Principal authorizedPrincipal = _underlyingConnection.getAuthorizedPrincipal();
return authorizedPrincipal == null ? null : authorizedPrincipal.getName();
}
@Override
public String getRemoteAddress()
{
return _underlyingConnection.getRemoteAddressString();
}
@Override
public String getRemoteProcessName()
{
return null;
}
@Override
public String getRemoteProcessPid()
{
return _underlyingConnection.getRemoteProcessPid();
}
@Override
public long getSessionCountLimit()
{
return _underlyingConnection.getSessionCountLimit();
}
@Override
public Transport getTransport()
{
return _underlyingConnection.getTransport();
}
@Override
public Port getPort()
{
return _underlyingConnection.getPort();
}
public Collection<Session> getSessions()
{
return getChildren(Session.class);
}
@StateTransition( currentState = State.ACTIVE, desiredState = State.DELETED)
private void doDelete()
{
closeUnderlyingConnection();
deleted();
setState(State.DELETED);
}
@Override
protected void onClose()
{
closeUnderlyingConnection();
}
@Override
public <C extends ConfiguredObject> C addChild(Class<C> childClass, Map<String, Object> attributes, ConfiguredObject... otherParents)
{
if(childClass == Session.class)
{
throw new IllegalStateException();
}
else
{
throw new IllegalArgumentException("Cannot create a child of class " + childClass.getSimpleName());
}
}
@Override
public long getBytesIn()
{
return _underlyingConnection.getDataReceiptStatistics().getTotal();
}
@Override
public long getBytesOut()
{
return _underlyingConnection.getDataDeliveryStatistics().getTotal();
}
@Override
public long getMessagesIn()
{
return _underlyingConnection.getMessageReceiptStatistics().getTotal();
}
@Override
public long getMessagesOut()
{
return _underlyingConnection.getMessageDeliveryStatistics().getTotal();
}
@Override
public long getLastIoTime()
{
return _underlyingConnection.getLastIoTime();
}
@Override
public int getSessionCount()
{
return _underlyingConnection.getSessionModels().size();
}
@Override
public void sessionAdded(final AMQSessionModel<?, ?> session)
{
SessionAdapter adapter = new SessionAdapter(this, session);
adapter.create();
childAdded(adapter);
}
@Override
public void sessionRemoved(final AMQSessionModel<?, ?> session)
{
// SessionAdapter installs delete task to cause session model object to delete
}
private void closeUnderlyingConnection()
{
if (_underlyingClosed.compareAndSet(false, true))
{
_underlyingConnection.removeDeleteTask(_underlyingConnectionDeleteTask);
try
{
_underlyingConnection.close(AMQConstant.CONNECTION_FORCED, "Connection closed by external action");
}
catch (Exception e)
{
LOGGER.warn("Exception closing connection "
+ _underlyingConnection.getConnectionId()
+ " from "
+ _underlyingConnection.getRemoteAddressString(), e);
}
}
}
}