[Catalyst] How to build a catalyst system based on plug in ?

Tue May 27 08:03:00 BST 2008

I think this is an interesting subject  - but first we need to nail
down what we meen by plugins.  If all you need is adding some CRUD
functionality to a database table - then you might read the CRUD
thread somewhere in the archives - in short it should be possible to
add add or delete tables from a CRUD editor with minimal hassle -
because the operations are quite uniform.  But what I would like to
see is a plugin solution to higher level issues - functionalities in
the application layer - like a 'tagging' plugin (that would add some
search options, and display tags etc), 'comment' plugin (that would
let the public to comment on some 'articles' in the database) etc.
The problem here is that they are cross-cutting - that is they require
additions in all model, controller and view.

Cheers,
Zbigniew

On Tue, May 27, 2008 at 4:42 AM, Solli Honorio <shonorio at gmail.com> wrote:
>
> Hi John, thanks for your attention and my apologize for the first email.
> Re-reading I could see now that the email was looking like a newbie asking
> for 'to do my homework', and definitively this was not my intention. My
> apologize.
>
> Maybe the right question would be 'if someone known/had a catalyst system
> extensible by plug ins' that I could study to check how they solve a fill
> problem that I'm looking for to be solved.
>
> I know how plugins works, the deferents technique to load plugins and share
> information, and I had read the 'Writing Pluggable Software', from Tatsuhiko
> Miyagawa, and 'Build Easily Extensible Perl Programs', from Ask Bjorn
> Hansen. I've test the Module::Pluggable::* and Class::Trigger on a simple
> enviroment of concept and test (and know i'm starting looking into
> Catalyst::Plugin::Pluggable). But I'd like to try to use the 'pluggable
> software' with Catalyst on a way that the user could extend the system
> without worry about on the which the DBMS the system are running, or have to
> know a lot of catalyst, or a single way to include something on a web
> interface.
>
> And finally the idea of this software isn't to be a nagios concurrent or
> something like, but a interface to manage the configuration file of the
> linux systems. Than I'm talking about to do a config parse and update this
> config file on a simple and controled way.
>
> Again, my apologize for the fist email. I had never had the intention on
> something like 'do my homework', but just if someone here had knowledge with
> plugin on a catalyst system that could share me how this kind of system
> could work on a MVC enviroment.
>
> Thanks all
>
> Solli M. Honorio
>
>
> 2008/5/22 John Napiorkowski <jjn1056 at yahoo.com>:
>>
>>
>>
>> --- On Wed, 5/21/08, Solli Honorio <shonorio at gmail.com> wrote:
>>
>> > From: Solli Honorio <shonorio at gmail.com>
>> > Subject: [Catalyst] How to build a catalyst system based on plug in ?
>> > To: catalyst at lists.scsys.co.uk
>> > Date: Wednesday, May 21, 2008, 11:54 PM
>> > Hi,
>> >
>> > I'm thinking about to build one system to manager
>> > services on distributed
>> > Linux machine on central console, something like webmin but
>> > to manager all
>> > services of many server on one single console.
>> >
>> > I would like to know about the best strategic to build this
>> > system based on
>> > plug in on a MVC environment , things like:
>> > * how to build a interface that would be easy to plug in
>> > add new feature to
>> > user interface ?
>> > * how to build a model that plug in could increments tables
>> > without worry
>> > about the sql server used ?
>> > * what is the best way to load plug ins on a MVC
>> > environment ?
>> > * and any other that I can't think by now but you can
>> > advice me !
>> >
>> > Thanks all,
>> >
>> > Solli
>> > Honorio
>>
>> You have a lot going on here.  I recommend you start by looking at some
>> open source monitoring tools, rather than building everything up from
>> scratch.  It sounds to me like you're going to need software running on each
>> of the monitored boxes and some sort of message queue that the central
>> system is monitoring.  If I had to build this custom I imagine I'd write
>> scripts on each of the monitored boxes that would insert report data into
>> shared database, or maybe use a job queue like TheSchwartz to help me manage
>> that.  Then I'd have some sort of alerting system, probably via email or SMS
>> for critical alerts.  Catalyst could be used for a web front end to give you
>> a sort of global dashboard.
>>
>> So I think 1) Catalyst can play a role here, but it's not going to be the
>> center of your system, 2) you need to looking at some existing opensource
>> monitoring tools, 3) come back to us with more detailed, "How do I" sort of
>> questions. I don't think anyone here is going be able to write your
>> technical specification for you!
>>
>> John
>>
>>
>>
>>
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>
>
>
> --
> "o animal satisfeito dorme". - Guimarães Rosa
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>

-- 
Zbigniew Lukasiak
http://brudnopis.blogspot.com/