4:37 p.m.
I have a custom subsystem extension I'm deploying in Wildfly 8.2. I hit a problem when
trying to bind an object to JNDI.
In my AbstractAddStepHandler.performRuntime() (the Subsystem Add handler), I want to bind
an object to JNDI, like this:
InitialContext initialContext = new InitialContext();
WritableServiceBasedNamingStore.pushOwner(context.getServiceTarget());
try {
initialContext.bind(jndiName, jndiObject); // <--- this sometimes throws
exception you see below
} finally {
WritableServiceBasedNamingStore.popOwner();
}
where "context" is the first parameter passed to the performRuntime() method,
and "jndiName" is "java:global/example/demo/myname" and
"jndiObject" is just a java.lang.String, like "hello".
The use of WritableServiceBasedNamingStore is recommended on the wiki:
https://docs.jboss.org/author/display/WFLY8/JNDI+Reference - though I have no idea what it
is doing :)
The problem is - each time I start my wildfly server, sometimes it works, other times it
doesn't. It is as if there is a race condition somewhere on startup of the wildfly
server. If it works, my JNDI object is bound properly; when it fails, this bombs with the
exception I show below.
Anyone know what the problem is and how to fix?
====
javax.naming.NoInitialContextException: Need to specify class name in environment or
system property, or as an applet parameter, or in an application resource file:
java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
[rt.jar:1.8.0_31]
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
[rt.jar:1.8.0_31]
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:350)
[rt.jar:1.8.0_31]
at javax.naming.InitialContext.bind(InitialContext.java:425) [rt.jar:1.8.0_31]
at org.demo.extension.SubsystemAdd.performRuntime(SubsystemAdd.java:153)
at
org.jboss.as.controller.AbstractAddStepHandler$1.execute(AbstractAddStepHandler.java:75)
[wildfly-controller-8.2.0.Final.jar:8.2.0.Final]
at
org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:660)
[wildfly-controller-8.2.0.Final.jar:8.2.0.Final]
at
org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:501)
[wildfly-controller-8.2.0.Final.jar:8.2.0.Final]
at
org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:298)
[wildfly-controller-8.2.0.Final.jar:8.2.0.Final]
at
org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:293)
[wildfly-controller-8.2.0.Final.jar:8.2.0.Final]
at
org.jboss.as.controller.ParallelBootOperationStepHandler$ParallelBootTask.run(ParallelBootOperationStepHandler.java:354)
[wildfly-controller-8.2.0.Final.jar:8.2.0.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[rt.jar:1.8.0_31]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[rt.jar:1.8.0_31]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_31]
at org.jboss.threads.JBossThread.run(JBossThread.java:122)
[jboss-threads-2.1.1.Final.jar:2.1.1.Final]