Web App Interface

[Rick Harding]

The Juju team is working on a feature called "juju resources" that can be
used to provide a blob to a charm to be used in the deployment. It sounds
like it might be interesting as a way to deliver the WAR file to the Tomcat
charm. The current beta1 implemented the local version where you can
defined and supply resources from your filesystem. Work is ongoing to be
able to pull those from the charm store.

See the resources section of the beta release notes.

https://lists.ubuntu.com/archives/juju/2016-February/006618.html

All that being said, it might be interesting for some layer for a web app
resource where resources does some of the work you'd do in that layer. I'd
be interested to know what others think there.

On Sat, Mar 5, 2016 at 6:40 AM Tom Barber <tom at analytical-labs.com> wrote:

> Okay so here's one I wanted to know if it made sense to people or not now
> there are layers, interfaces etc.
>
> Take Saiku or any other WAR based webapp. Currently our app is a Tomcat
> subordinate, which installs the WAR and a few other directories and just
> sed-s a few files to set some variables.
>
> In this land of layers and interfaces, does it make sense to have a webapp
> interface? I realise most of the current interfaces are for services and
> not file archives, but, if I deploy Tomcat, Wildfly, Karaf I know that
> (with a bit of tweaking) I can deploy a war to each of those and they
> should behave pretty much the same. So does it make sense to have an
> interface that lets me charm up my WAR file and then add a relation from
> WAR <-> J2EE Container so I can just link them together and have Juju place
> my WAR in the correct location?
>
> That way you can deploy on multiple services without having to do much, if
> anything, to your code.
>
> Cheers
>
> Tom
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