/*
* 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.
*/
package org.apache.webbeans.web.failover;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.webbeans.config.WebBeansContext;
import org.apache.webbeans.logger.WebBeansLoggerFacade;
import org.apache.webbeans.spi.FailOverService;
/**
* Bag which holds all required informations for the fail over.
*/
public class FailOverBag implements Serializable, Externalizable
{
public static final String SESSION_ATTRIBUTE_NAME = "o.a.owb.FAIL_OVER_BAG";
private static final Logger LOGGER = WebBeansLoggerFacade.getLogger(FailOverBag.class);
private static final long serialVersionUID = -6314819837009653190L;
private transient FailOverService failOverService;
private Map<String, Object> items;
private boolean sessionInUse;
private String sessionId;
private String jvmId;
/**
* Used by serialization.
*/
public FailOverBag()
{
WebBeansContext webBeansContext = WebBeansContext.currentInstance();
this.failOverService = webBeansContext.getService(FailOverService.class);
this.items = new HashMap<String, Object>();
}
public FailOverBag(String sessionId, String jvmId)
{
WebBeansContext webBeansContext = WebBeansContext.currentInstance();
this.failOverService = webBeansContext.getService(FailOverService.class);
this.items = new HashMap<String, Object>();
this.sessionId = sessionId;
this.jvmId = jvmId;
}
public void put(String name, Object item)
{
items.put(name, item);
}
public Object get(String name)
{
return items.get(name);
}
@Override
@SuppressWarnings("unchecked")
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
sessionInUse = in.readBoolean();
sessionId = (String) in.readObject();
jvmId = (String) in.readObject();
if (sessionInUse)
{
if (LOGGER.isLoggable(Level.FINE))
{
LOGGER.log(Level.FINE, "Skip bean de-serialization because session with id [" + sessionId + "] is in use.");
}
return;
}
byte[] buffer = (byte[]) in.readObject();
ByteArrayInputStream bais = new ByteArrayInputStream(buffer);
ObjectInputStream ois = failOverService.getObjectInputStream(bais);
items = (Map<String, Object>) ois.readObject();
ois.close();
}
@Override
public void writeExternal(ObjectOutput out) throws IOException
{
out.writeBoolean(sessionInUse);
out.writeObject(sessionId);
out.writeObject(jvmId);
if (sessionInUse)
{
if (LOGGER.isLoggable(Level.FINE))
{
LOGGER.log(Level.FINE, "Skip bean serialization because session with id [" + sessionId + "] is in use.");
}
return;
}
// In old times (< OWB-1.2.0) We could not directly use java object stream since we were using javassist.
// Thus we had to serialize the bag by use javassist object stream.
// this is needed anymore since owb-1.2.0!
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = failOverService.getObjectOutputStream(baos);
oos.writeObject(items);
oos.flush();
out.writeObject(baos.toByteArray());
oos.close();
baos.close();
}
public boolean isSessionInUse()
{
return sessionInUse;
}
public void setSessionInUse(boolean sessionInUse)
{
this.sessionInUse = sessionInUse;
}
public String getSessionId()
{
return sessionId;
}
public void setSessionId(String sessionId)
{
this.sessionId = sessionId;
}
public String getJvmId()
{
return jvmId;
}
public void setJvmId(String jvmId)
{
this.jvmId = jvmId;
}
}