Kev's Development Toolbox

October 3, 2014

Adding a JMS Queue to Wildfly 8.x

The messaging subsystem in Wildfly is enabled in the standalone-full.xml config (not standalone.xml).

To add a new queue, search for <subsystem xmlns=”urn:jboss:domain:messaging:2.0″>, and then within the <hornetq-server> section, add a new <jms-destinations> if it doesn’t exist already, and define your queue name and JNDI lookup:

<jms-destinations>
    <jms-queue name="exampleQueue">
        <entry name="jms/queue/example"/>
        <entry name="java:jboss/exported/jms/queue/example"/>
    </jms-queue>
</jms-destinations>

October 2, 2014

James Gosling at JavaOne 2014 vs JavaOne 2009

JavaOne 2014 wrapped up today, and was another great year, with plenty of awesome sessions. James Gosling played an active part in the Q&A during the Community Keynote this morning, and also gave a retrospective of the development of Java. He was wearing one of his Nighthacks Diner shirts, which I think we’re given out as a special prize at a JavaOne several years back (based on the painting by Edward Hopper, ‘Nighthawks Diner’). I seem to remember the design on this particular shirt, so did some digging in my photos from JavaOne conferences in the past, and here you go:

This is from JavaOne 2009 – I believe James was visiting some of the exhibitions in the Exhibition Hall:

And from this morning during the Community Keynote:

September 30, 2014

Getting started with the AngularJS tutorial on Windows – issues

Here’s a quick summary of specific issues and workarounds I’ve run into so far:

Running ‘npm install’ and get: “Error: ENOENT, stat ‘C:\Users\[user id]\AppData\Roaming\npm”

This appears to be something removed in the node.js Windows installer. If you create the npm dir in the location above, this fixes this issue, and/or running the node.js prompt with admin privs in Windows. Covered here.

“Error: ENOENT, no such file or directory 'c:\[some path]\package.json'“

The Angular.JS tutorial steps don’t mention that you need to cd into the cloned angular-phonecat dir after you’ve grabbed it from github. Maybe this would be obvious if you’re already familiar with node.js and npm, but cd’ing into the cloned tutorial dir fixes this issue for me. Similar to this issue.

‘npm start’ throws errors re binding to 0.0.0.0 and port 8000

I’m not sure if this was because something was already running on port 8000 on my Windows box, but similar to the comments on the logged comments here, if you follow the steps to edit the package.json file, you can change the bind address and/or port before starting the server. Changing from 8000 to 8080 seemed to fix it for me.

September 22, 2014

Mounting USB drives on an Ubuntu VirtualBox guest on Mac OS X host

If you’ve come across this already then this might be obvious, but in order to mount a USB external drive on an Ubuntu VirtualBox guest running on a Mac OS X host, you need to unmount the drive in Mac’s Finder first. Then using either click the USB icon in the status bar in your Ubuntu guest and you’ll see the drive un-greyed out (when it’s mounted on the Mac it appears greyed out and you can’t select it) – click it and it will mount automatically. Or you can do the same thing from the VirtualBox menu, Devices/USB.