Skip to main content

CronPlugin for OpenBD




From OpenBD





Jump to: navigation, search

Category:CronPlugin



The CronPlugin makes the management and scheduling of tasks much easier within OpenBD.

Inspired from the simplicity of the /etc/cron.d/ subdirectories, this plugin brings the ease of that method to the CFML developer by allowing them to simply drop files into pre-defined folders that will be automatically run, without needing to wrestle with external scheduling jobs or CFSCHEDULE.

The plugin will automatically create the necessary directories if they do not already exist. You set this directory by making a call to CronSetDirectory(). This directory location will persist over server restarts.


For example making a call with:

CronSetDirectory("/cron.d")


will create the following directory structure within the web app directory.

/<webapp>/
/<webapp>/cron.d/cron.5min/
/cron.15min/
/cron.hourly/
/cron.daily/
/cron.weekly/
/cron.monthly/



After this, you can simply drop .cfm files into each of these directories and they will be run at the allocated time. There is no need to restart the engine, or re-call the CronSetDirectory(); it will automatically be picked up.

Everytime the plugin executes one of these files at the desired time, a copy of the output is retained. Within the OpenBD working directory, a similiar structure is created but under the plugin-cron directory, where you can view the results of each file.

This plugin triggers the main OpenBD CFML engine directly, without having to go out and back in via HTTP. This makes it highly efficient and removes a lot of the overhead associated with other schedule methods.

This plugin operates with the nightly build post 4th March 2010 and can be installed by simply copying the .jar file into the /WEB-INF/lib/ folder of your web app.

[download the plugin]






Pages in category "CronPlugin"


This category contains only the following page.

C








Another awesome plugin for OpenBD. Some really slick possibilities here, and my favorite thing is that FINALLY we have a way to run scheduled tasks without them simply being a scheduled HTTP call. The CronPlugin processing the CFML code in the engine directly.

Note that this doesn't replace the traditional scheduling, but it's another option that will work really well for a lot of use cases.

Comments

Popular posts from this blog

Installing and Configuring NextPVR as a Replacement for Windows Media Center

If you follow me on Google+ you'll know I had a recent rant about Windows Media Center, which after running fine for about a year suddenly decided as of January 29 it was done downloading the program guide and by extension was therefore done recording any TV shows.

I'll spare you more ranting and simply say that none of the suggestions I got (which I appreciate!) worked, and rather than spending more time figuring out why, I decided to try something different.

NextPVR is an awesome free (as in beer, not as in freedom unfortunately ...) PVR application for Windows that with a little bit of tweaking handily replaced Windows Media Center. It can even download guide data, which is apparently something WMC no longer feels like doing.

Background I wound up going down this road in a rather circuitous way. My initial goal for the weekend project was to get Raspbmc running on one of my Raspberry Pis. The latest version of XBMC has PVR functionality so I was anxious to try that out as a …

Setting Up Django On a Raspberry Pi

This past weekend I finally got a chance to set up one of my two Raspberry Pis to use as a Django server so I thought I'd share the steps I went through both to save someone else attempting to do this some time as well as get any feedback in case there are different/better ways to do any of this.

I'm running this from my house (URL forthcoming once I get the real Django app finalized and put on the Raspberry Pi) using dyndns.org. I don't cover that aspect of things in this post but I'm happy to write that up as well if people are interested.

General Comments and Assumptions

Using latest Raspbian “wheezy” distro as of 1/19/2013 (http://www.raspberrypi.org/downloads)We’lll be using Nginx (http://nginx.org) as the web server/proxy and Gunicorn (http://gunicorn.org) as the WSGI serverI used http://www.apreche.net/complete-single-server-django-stack-tutorial/ heavily as I was creating this, so many thanks to the author of that tutorial. If you’re looking for more details on …

The Definitive Guide to CouchDB Authentication and Security

With a bold title like that I suppose I should clarify a bit. I finally got frustrated enough with all the disparate and seemingly incomplete information on this topic to want to gather everything I know about this topic into a single place, both so I have it for my own reference but also in the hopes that it will help others.Since CouchDB is just an HTTP resource and can be secured at that level along the same lines as you'd secure any HTTP resource, I should also point out that I will not be covering things like putting a proxy in front of CouchDB, using SSL with CouchDB, or anything along those lines. This post is strictly limited to how authentication and security work within CouchDB itself.CouchDB security is powerful and granular but frankly it's also a bit quirky and counterintuitive. What I'm outlining here is my understanding of all of this after taking several runs at it, reading everything I could find on the Internet (yes, the whole Internet!), and a great deal…