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From "Mattmann, Chris A (388J)" <chris.a.mattm...@jpl.nasa.gov>
Subject Re: serving files from filemgr
Date Thu, 26 Apr 2012 01:40:51 GMT
Hey Ricky,

Exactly looks like you've totally scoped it below. 

I would love to produce more of these Wicket apps, in particular:

* the PCS OPSUI used to have the ability to modify the config and policy
for FM, WM and RM. I started working on this for 0.4, but 0.4 will ship with
this functionality not really working. So in 0.5 I want to get it working.

* I'd like to update the CAS curator webapp to minimally leverage Wicket
instead of JSP in the background as it currently does. That way you 
could feasibly "drop in" a curator widget into an app.

* a set of controller apps that actually stop/start/restart the FM, RM, and
WM

* a set of remote data acquisition UIs (e.g., stuff to control push pull)

Those are just a few off the top of my head.

Cheers,
Chris

On Apr 25, 2012, at 11:28 AM, Nguyen, Ricky wrote:

> Thanks for the info Chris. Comments inline...
> 
> 
> On Apr 24, 2012, at 8:27 PM, Mattmann, Chris A (388J) wrote:
> 
>> Hi Ricky,
>> 
>>> On 4/23/12 11:58 AM, Nguyen, Ricky wrote:
>>>> Seems like there are many different front ends for the file manager.
>>>> 
>>>> 1) app/fmbrowser - a Swing application
>> 
>> Yep, written on the OCO and NPP projects by Dave W., to serve a quick browse
>> need. 
> 
> Seems like the web UI (#3 webapp/fmbrowser) is preferred, but this is kept because it
still works and is good for non-browser/non-webcontainer use.
> 
>> 
>>>> 2) webapp/fmprod - a REST service
>> 
>> Yep, providing RSS/RDF feeds and metadata for products, as well as dataset delivery
(by zip), coupled with 
>> zipped products and met and dataset met, along with product delivery (by zip), coupled
with product met.
>> Originally developed to support the National Cancer Institute and EDRN, but now supporting
a growing number of other projects.
> 
> Cool. Machine readable. Zero UI. REST service.
> 
>> 
>>>> 3) webapp/fmbrowser - wicket web app, not sure what this is?
>> 
>> This is a Wicket-based version of the original web app for the new CAS, the FIle
Manager Browser. It
>> is really the inspiration behind the File Manager browse capability (a "drop in"
module to PCS OPSui)
>> that is being developed e.g., in Balance, that has been developed using other frameworks
like pure
>> JSP in the early days, and that I decided per https://issues.apache.org/jira/browse/OODT-155
>> that it was time to upgrade to Wicket.
> 
> Web UI that uses panels/components from #4. Mostly for browsing products/metadata/types
etc. 
> 
>> 
>>>> 4) webapp/components - wicket web app, not sure what this is?
>> 
>> This is a core set of Widgets written in the Wicket framework that are totally reusable.
They are pure
>> HTML (with XHTML compliant attributes), fully previeweable, with decoupled CSS and
javascript.
>> Wicket requires components be packaged right alongside their Java controllers, in
the package
>> structure.
>> 
>> Included in these reusable modules are:
>> * a Product Types browser
>> * a Product viewer (transfer status, etc.)
>> * a Product Metadata viewer
>> * a Product Reference viewer
>> * a per-Product Type search interface
>> * a Workflow instances viewer
>> * a Workflow viewer
>> * a Workflow Task viewer
>> * a Workflow Condition viewer
>> * a Workflow Event browser
>> * the PCS stat monitor widget
>> * a PCS pedigree tree widget, included in the OPSui
>> 
>> The FM browser from OODT-155 is built by simply "dropping" the above components into

>> HTML pages in the fmbrowser webapp and then writing a 5 line Java controller that
binds
>> the HTML view object t to the backend controller. The Workflow Monitor in OODT-156
is
>> built similarly, and the OPSui in https://issues.apache.org/jira/browse/OODT-157
is an
>> agglomerate of the above "higher" level modules for FM browser and for WM monitoring,
>> coupled with the PCS health and pedigree functionality.
> 
> Re-usable drop-in panels that seem to encapsulate "business logic" of using the xmlrpc
clients.
> 
>> 
>> Wicket In Action is a *great* book that describes the framework and I really recommend
it.
>> I picked it up really quickly and got through Chapter 8 in the first week. Rishi
I know also
>> really got behind it.
>> 
>>>> 5) pcs/opsui - wicket web app, demo'd at apachecon '11, what can it do for
filemgr?
>> 
>> See above. 
> 
> I see pcs/opsui also reuses the filemgr drop-in panels from #4. So while #3 is pure filemgr
UI, #5 is a dashboard/conglomeration of UIs for filemgr/workflow mgr/ etc… 
> 
>> 
>>>> 
>>>> 3, 4 and 5 all appear to have "product browsing" capabilities (what I'm guessing
from looking at the java class names). What are the differences between these apps? Do they
work together or have different roles? Are some deprecated in favor of others?
>> 
>> I would leverage the PCS OPSui as a starting point. It's easily skinnable, ships
with Apache OODT 0.4
>> (if we ever release it -- JUST KIDDING :) ) and is also baked into OODT RADIX.
>> 
>> Paul R. can talk more about that.
>> 
>> HTH!
>> 
>> Cheers,
>> Chris
>> 
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> Chris Mattmann, Ph.D.
>> Senior Computer Scientist
>> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
>> Office: 171-266B, Mailstop: 171-246
>> Email: chris.a.mattmann@nasa.gov
>> WWW:   http://sunset.usc.edu/~mattmann/
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> Adjunct Assistant Professor, Computer Science Department
>> University of Southern California, Los Angeles, CA 90089 USA
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> 
> 
> 
> <mg_info.txt>


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: chris.a.mattmann@nasa.gov
WWW:   http://sunset.usc.edu/~mattmann/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


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