Hi,
I think I am facing some kind of bug or limitation in the Openfire
plugin environment that I can't figure out the root cause. In this piece
of JAVA code of the sipx-openfire presence plug-in I query the Openfire
plug-in manager to get the "kraken" plug-in instance, then cast it to
the proper type. This is identical to what's being done by the kraken
web component interfacing its own kraken plugin but in my case I do it
from another Openfire plug-in. I get a cast error although the class
type is identical in the exception text and in the class instance as
well.
Note: The "plugin-kraken.jar" file which contains the class definition
for KrakenPlugin is located under
/opt/openfire/plugins/kraken/lib/plugin-kraken.jar. I had to copy this
jar file under /opt/openfire/plugins/sipx-openfire/lib/plugin-kraken.jar
to have the sipx-openfire presence plugin resolve its symbol for the
KrakenPlugin class. I could not simply have moved plugin-kraken.jar to a
single location under /opt/openfire/lib because the kraken plugin would
not load at all. It seems like the symbols dynamically loaded under
/opt/openfire/plugins/kraken/lib plugin environment are not visible
under the /opt/openfire/plugins/sipx-openfire/lib plugin environment.
Here is the code that generates the exception:
==============================================
import net.sf.kraken.KrakenPlugin;
import org.jivesoftware.openfire.XMPPServer;
import org.jivesoftware.openfire.container.Plugin;
import org.jivesoftware.openfire.container.PluginManager;
public XmppAccountInfo() {
PluginManager pluginManager =
XMPPServer.getInstance().getPluginManager();
Plugin plugin;
KrakenPlugin krakenPlugin;
try {
System.err.println("PluginMgr: " +
pluginManager.toString());
Collection<Plugin> collPg = pluginManager.getPlugins();
for (Plugin pg : collPg) {
System.err.println("PluginItem: " +
pg.toString());
}
plugin = pluginManager.getPlugin("kraken");
System.err.println("getPlugin returns string: "
+ plugin.toString());
System.err.println("getPlugin returns getClass: " +
plugin.getClass().getName() );
krakenPlugin = (KrakenPlugin)plugin;
} catch (Exception ex) {
System.err.println("Cannot initialize the kraken plugin
instance details follow:");
System.err.println(ex);
}
}
Here is the debug output from the code above:
=============================================
-bash-3.2$ cat openfire/stderror.log
PluginMgr: org.jivesoftware.openfire.container.pluginmana...@1ad9b0f
PluginItem:
org.jivesoftware.openfire.container.adminconsoleplu...@42f352
PluginItem:
org.sipfoundry.openfire.plugin.presence.sipxopenfireplu...@b398da
PluginItem: org.jivesoftware.openfire.plugin.searchplu...@7bbfb8
PluginItem: net.sf.kraken.krakenplu...@1a93f38
getPlugin returns string: net.sf.kraken.krakenplu...@1a93f38
getPlugin returns getClass: net.sf.kraken.KrakenPlugin
Cannot initialize the kraken plugin instance details follow:
java.lang.ClassCastException: net.sf.kraken.KrakenPlugin cannot be cast
to net.sf.kraken.KrakenPlugin
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