/**
* $Revision: $
* $Date: $
*
* Copyright (C) 2007-2009 Jive Software. All rights reserved.
*
* Licensed 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 com.jivesoftware.openfire.session;
import org.jivesoftware.openfire.session.Session;
import org.jivesoftware.util.Log;
import org.jivesoftware.util.TaskEngine;
import org.jivesoftware.util.cache.ClusterTask;
import org.jivesoftware.util.cache.ExternalizableUtil;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.net.UnknownHostException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
/**
* Operations to be executed in a remote session hosted in a remote cluster node.
*
* @author Gaston Dombiak
*/
public abstract class RemoteSessionTask implements ClusterTask {
protected Object result;
protected Operation operation;
public RemoteSessionTask() {
}
protected RemoteSessionTask(Operation operation) {
this.operation = operation;
}
abstract Session getSession();
public Object getResult() {
return result;
}
public void run() {
if (operation == Operation.getStreamID) {
result = getSession().getStreamID().getID();
}
else if (operation == Operation.getServerName) {
result = getSession().getServerName();
}
else if (operation == Operation.getCreationDate) {
result = getSession().getCreationDate();
}
else if (operation == Operation.getLastActiveDate) {
result = getSession().getLastActiveDate();
}
else if (operation == Operation.getNumClientPackets) {
result = getSession().getNumClientPackets();
}
else if (operation == Operation.getNumServerPackets) {
result = getSession().getNumServerPackets();
}
else if (operation == Operation.close) {
// Run in another thread so we avoid blocking calls (in coherence)
final Session session = getSession();
if (session != null) {
final Future<?> future = TaskEngine.getInstance().submit(new Runnable() {
public void run() {
session.close();
}
});
// Wait until the close operation is done or timeout is met
try {
future.get(15, TimeUnit.SECONDS);
}
catch (Exception e) {
// Ignore
}
}
}
else if (operation == Operation.isClosed) {
result = getSession().isClosed();
}
else if (operation == Operation.isSecure) {
result = getSession().isSecure();
}
else if (operation == Operation.getHostAddress) {
try {
result = getSession().getHostAddress();
} catch (UnknownHostException e) {
Log.error("Error getting address of session: " + getSession(), e);
}
}
else if (operation == Operation.getHostName) {
try {
result = getSession().getHostName();
} catch (UnknownHostException e) {
Log.error("Error getting address of session: " + getSession(), e);
}
}
else if (operation == Operation.validate) {
result = getSession().validate();
}
}
public void writeExternal(ObjectOutput out) throws IOException {
ExternalizableUtil.getInstance().writeBoolean(out, operation != null);
if (operation != null) {
ExternalizableUtil.getInstance().writeInt(out, operation.ordinal());
}
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
if (ExternalizableUtil.getInstance().readBoolean(in)) {
operation = Operation.values()[ExternalizableUtil.getInstance().readInt(in)];
}
}
public enum Operation {
/**
* Basic session operations
*/
getStreamID,
getServerName,
getCreationDate,
getLastActiveDate,
getNumClientPackets,
getNumServerPackets,
close,
isClosed,
isSecure,
getHostAddress,
getHostName,
validate,
/**
* Operations of c2s sessions
*/
isInitialized,
incrementConflictCount,
/**
* Operations of outgoing server sessions
*/
getAuthenticatedDomains,
getHostnames,
isUsingServerDialback,
/**
* Operations of external component sessions
*/
getType,
getCategory,
getInitialSubdomain,
getSubdomains,
getName,
getDescription,
start,
shutdown,
/**
* Operations of incoming server sessions
*/
getLocalDomain,
getAddress
}
}