Clustering Error: org.jivesoftware.openfire. handler.IQHandler - Internal server error

Openfire Openfire Support
1

I’m running open fire on cluster but I get this error often. Sometimes my user is able to login and sometimes this error occurs:

(Please note that if I disable clustering this goes away)

2012.01.05 08:14:03 org.jivesoftware.openfire.handler.IQHandler - Internal server error
java.lang.NullPointerException
at org.jivesoftware.openfire.session.LocalClientSession.setDefaultList(LocalClient Session.java:530)
at org.jivesoftware.openfire.session.LocalClientSession.setAuthToken(LocalClientSe ssion.java:598)
at org.jivesoftware.openfire.handler.IQBindHandler.handleIQ(IQBindHandler.java:154 )
at org.jivesoftware.openfire.handler.IQHandler.process(IQHandler.java:65)
at org.jivesoftware.openfire.IQRouter.handle(IQRouter.java:372)
at org.jivesoftware.openfire.IQRouter.route(IQRouter.java:121)
at org.jivesoftware.openfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:76)
at org.jivesoftware.openfire.net.StanzaHandler.processIQ(StanzaHandler.java:337)
at org.jivesoftware.openfire.net.ClientStanzaHandler.processIQ(ClientStanzaHandler .java:93)
at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:302)
at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:194)
at org.jivesoftware.openfire.nio.ConnectionHandler.messageReceived(ConnectionHandl er.java:169)
at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived (AbstractIoFilterChain.java:570)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)
at org.apache.mina.common.IoFilterAdapter.messageReceived(IoFilterAdapter.java:80)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)
at org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput.flush(SimplePr otocolDecoderOutput.java:58)
at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecF ilter.java:185)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)
at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java :239)
at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(Execut orFilter.java:283)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java: 886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
at java.lang.Thread.run(Thread.java:662)

Please advice,

Best Regards,

Stevenson Lee

2

I checked the codes in http://fisheye.igniterealtime.org/browse/~br=trunk/svn-org/openfire/trunk/src/ja va/org/jivesoftware/openfire/session/LocalClientSession.java?hb=true

(This could be an old code but I’m using openfire 3.7.1)

I think privacy list is somehow affected by clustering but I don’t know why. Does someone have any idea?

The error occurs on

``(defaultList != ``null && defaultList.getName().equals(``this``.defaultList))) {

but the default list is given by the caller… Is there a reason why this happens?

``/**

``* Sets the default Privacy list used for the session's user. This list is

``* processed if there is no active list set for the session.

``*

``* @param defaultList the default Privacy list used for the session's user.

``*/

``public void setDefaultList(PrivacyList defaultList) {

``// Do nothing if nothing has changed

``if ((``this``.defaultList == ``null && defaultList == ``null``) ||

``(defaultList != ``null && defaultList.getName().equals(``this``.defaultList))) {

``return``;

``}

``this``.defaultList = defaultList != ``null ? defaultList.getName() : ``null``;

``if (ClusterManager.isClusteringStarted()) {

``// Track information about the session and share it with other cluster nodes

``Cache<String,ClientSessionInfo> cache = SessionManager.getInstance().getSessionInfoCache();

``cache.put(getAddress().toString(), ``new ClientSessionInfo(``this``));

``}

``}

``public void setAuthToken(AuthToken auth, String resource) {

``setAddress(``new JID(auth.getUsername(), getServerName(), resource));

``authToken = auth;

``setStatus(Session.STATUS_AUTHENTICATED);

``// Set default privacy list for this session

``setDefaultList(PrivacyListManager.getInstance().getDefaultPrivacyList(auth.getUsername()));

``// Add session to the session manager. The session will be added to the routing table as well

``sessionManager.addSession(``this``);

``}

3

I tried clearing the privacy list cache and I am able to connect properly in mydomain:9090/system-cache.jsp

I don’t know what’s corrupting the privacy list cache when clustering is enabled.

Is there anyway to fix this without manually clearing the system cache?

Please advice

4

I was able to resolve my issue by modifying to code a bit

(defaultList != ``null &&

**defaultList.getName() != null && this.defaultList != null**

defaultList.getName().equals(``this``.defaultList))) {

just to avoid the null pointer exception.

If there is a better solution please inform me

Thanks guys,

Best regards,

Stevenson Lee

5

In the class org.jivesoftware.openfire.privacy.PrivacyList, modify the method of writeExternal(ObjectOutput out), you only add under code:

ExternalizableUtil.getInstance().writeBoolean(out, name != null);

if(name != null)

{

ExternalizableUtil.getInstance().writeSafeUTF(out, name);

}

and modify the method of readExternal(ObjectInput in),you need to add under code:

if(ExternalizableUtil.getInstance().readBoolean(in))

{

name = ExternalizableUtil.getInstance().readSafeUTF(in);

}

but the order of writing the name and reading the name need to be consistent

good luck!

6

hi huan, I’m still new to all this and haven’t really done anything heavy debugging on openfire. Could you explain how the changing writeExternal and readExternal will prevent this error?