Hello Ignite community,
I am running Openfire 3.11 on an AWS EC2 instance. I know this isn’t a released version of Openfire, I slightly modified the “latest” source code when we starting using Openfire in our environment. The code I modified is unrelated to the problem I’m experiencing here, as far as I can tell. I am seeing a strange error when I try to view the list of users in the admin console. I get a stack trace that looks like this:
HTTP ERROR 500
Problem accessing /user-summary.jsp. Reason:
> > Server Error
Caused by:
java.lang.NullPointerException
at org.jivesoftware.openfire.spi.PresenceManagerImpl.getPresence(PresenceManagerIm pl.java:109)
at org.jivesoftware.openfire.admin.user_002dsummary_jsp._jspService(user_002dsumma ry_jsp.java:267)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1669)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:74)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingF ilter.java:50)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:78)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:159)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:22 3)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:11 27)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185 )
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:106 1)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandler Collection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.jav a:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635 )
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
This isn’t the first time this has happened, but it goes away temporarily when I restart the server. I observed this error yesterday, restarted the server, and less than 24 hours later it was back. Obviously this isn’t something I want to do every day, but I don’t understand what the problem is. Can anyone help me track down the problem? Here’s the code that appears in my version of PresenceManagerImpl.java, surrounding the offending line 109:
public Presence getPresence(User user) {
if (user == null) {
return null;
}
Presence presence = null; for (ClientSession session : sessionManager.getSessions(user.getUsername())) {
if (presence == null) {
presence = session.getPresence(); // <<< This is line 109
}
else {
// Get the ordinals of the presences to compare. If no ordinal is available then
// assume a value of -1
int o1 = presence.getShow() != null ? presence.getShow().ordinal() : -1;
int o2 = session.getPresence().getShow() != null ?
session.getPresence().getShow().ordinal() : -1;
// Compare the presences' show ordinals
if (o1 > o2) {
presence = session.getPresence();
}
}
}
return presence; }
This error hasn’t caused any problems with the actual functioning of Openfire as a chat server, but I would really like to be able to see and work with the user list. Thanks for your help!
Message was edited by: Chris. Fixed Java syntax highlighting