Displaying Output Onto Kid Template Instead Of Background

[hoboro]

Everyone,

I am having a processes where I click on a button on a page and it
runs in the background. Is it possible
to bring this output so it can be viewed in a web browser instead of
viewing on the console?

I would like to have the user see his results getting processed.


Thank You
Rohan

[Florent Aide]

You will need to read(chunksize) the stdout + stderr of your
background process and stream it down to the client in the same loop

for this you'll need to declare your url as streamed using this:

cherrypy.config.update({tg.url('url'): {'streamResponse': True}})

and then in the loop use a yield statement...

Sorry I don't have enough time for a real answer with code.

Florent.

[Christopher Arndt]

hoboro schrieb:

Look at the standard library subprocess module. Capture the output of
the process you are running and attach it to a template variable.

The problem with this approach is that the page load will hang until
your background process has finished.

If this is not feasible, you could do this:

1) Run the background process in it's own thread an let it write it's
output to a file pipe or Queue.Queue.
2) Provide a controller method that reads from the pipe and returns all
data read within a certain timeout wrapped in a JSON response.
3) Build a JavaScript function in your page that regularly polls the
method from step 2) via AJAX and displays the returned data.

Chris

[Florent Aide]

mix our two answers and you begin to get an idea :)