blog.oremj.com

Simple bash locking

oremj — Wed, 03 Dec 2008 02:33:59 +0000

I often need to create lock files in my scripts, so crontab doesn’t spawn more than one process. This is a simple bash lock file function I like to use:

function create_lock {
        LOCK_NAME=$1
        if [[ -e "$LOCK_NAME" ]]
        then
                OLDPID=`cat $LOCK_NAME`
                if ps p $OLDPID > /dev/null
                then
                        return 1
                fi
                rm $LOCK_NAME
        fi
        echo $$ > $LOCK_NAME
        return 0
}

create_lock doesn’t handle race conditions, but it is typically good enough for me.

Mediawiki Google Search Appliance Integration

oremj — Wed, 15 Oct 2008 22:07:31 +0000

I was given the task of integrating our old Google Search Appliance with our internal wiki. It turns out MediaWiki offers a couple of different ways to alter search functionality: $wgSearchForwardUrl and $wgSearchType. The $wgSearchType variable accepts a SearchEngine class name and enables custom search back-ends. SimpleXML and the GSA XML API then allowed me to fetch and process the search results. After a few hours of tweaking I am pretty happy with the result, a tightly integrated full text search.

If you are interested in setting up your Google Search Appliance with a mediawiki instance, installation is simple, download or checkout the extension and follow the installation instructions.

My Life is a Little Bit Easier Now

oremj — Fri, 12 Sep 2008 21:42:11 +0000

Lately, I’ve found the process of assigning a bug to myself slightly cumbersome and wanted to speed up the process. I happen to be a fan of Ubiquity, so I decided to write a command.

The command assigntome, by default, changes the assigned to field to your user. The whole process can be automated by tacking on the submit noun, which will simulate clicking the “Commit” button.

To install assigntome subscribe to my Ubiquity feed.

MediaWiki: HttpAuth Plugin

oremj — Mon, 08 Sep 2008 02:21:22 +0000

All HttpAuth Plugin development has moved here from my work blog. Mozilla’s internal wikis have been using the extension without issue. Is anyone aware of issues that need fixing?

SimpleCaptcha Update

oremj — Thu, 04 Sep 2008 23:52:38 +0000

I’ve decided to move SimpleCaptcha development to my personal server.