It sounds like you are describing the Scheduler (in the book). This is a
completely separate instance of Python and web2py that can run long-running
things in a different process from the website. I use it for reading large
files and populating the database, or generating long reports. In both
cases I don't want to impact the responsiveness of my website by executing
a long-running function.
The Scheduler has full access to all of the power of web2py tables,
functions, etc. It is started as a separate process with one or more
"workers" (each a separate process) and the communication is handled
through a shared database. it is both monstrously powerful and simple to
use. it is one if the five best features in web2py, IHMO.
-- Joe B.
On Sunday, January 26, 2014 10:39:09 AM UTC-8, desta wrote:
>
> This in an interesting approach.
>
> What would be a proper way to implement this?
> I imagine that a controller in web2py populates a queue. And you need
> another python script to check this queue, which is stored in a table in
> the db, and execute them. Would this python script be an external to
> web2py? If so, would it be possible to access the tables of the db inside
> web2py?
>
> Thanks.
>
> On Tuesday, July 9, 2013 9:10:20 AM UTC+3, Encompass solutions wrote:
>>
>> Other solutions include a queuing server. Another python process
>> whatching for new things to do and executes that way. Much cleaner than
>> running another subprocess. But takes longer to do.
>>
>>
>>
>> On Tue, Jul 9, 2013 at 2:19 AM, Vinicius Assef <vinic...@gmail.com>wrote:
>>
>>> It depends how you want your external script be executed.
>>>
>>> But you can use subprocess.Popen() or subprocess.call().
>>>
>>> On Mon, Jul 8, 2013 at 4:47 PM, pratt <pratyus...@gmail.com> wrote:
>>> > I would like to run the external python script testQEF when the button
>>> on
>>> > the html page is clicked.The below code is my html page
>>> >
>>> > index.html
>>> >
>>> ----------------------------------------------------------------------------
>>> > ---------
>>> > {{extend 'layout.html'}}
>>> >
>>> > <p>Please Enter the old Modcod</p>
>>> >
>>> > <form>
>>> > <INPUT type="text" id="q" name = "q" value=""/>
>>> > <INPUT type="button" value="Run Test"
>>> > onclick="ajax('{{=URL('data')}}',['q'],'target');"/>
>>> > </form>
>>> > <br/>
>>> > <div id="target"></div>
>>> >
>>> >
>>> ----------------------------------------------------------------------------
>>> > --------------
>>> > The below code is my controller default.py
>>> >
>>> > # coding: utf8
>>> > # try something like
>>> > import threading
>>> > import time
>>> > import sys
>>> > sys.path.append('C:/Users/pratt/Workspace_Eclipse/Copy of
>>> > MasterSolution_COPY')
>>> > # I am importing the external python script using sys,path
>>> > import testQEF
>>> > a = 0
>>> > heyo = 'zero'
>>> >
>>> > def index():
>>> >
>>> > return dict(toobar=response.toolbar())
>>> >
>>> > def data():
>>> >
>>> > if not session.m or len(session.m)==20: session.m=[]
>>> > if request.vars.q: session.m.append(request.vars.q)
>>> > session.m.sort()
>>> > # starting the thread to run my external python script
>>> > h.start()
>>> > return TABLE(*[TR(v) for v in session.m]).xml()
>>> > #return dict(toobar=response.toolbar())
>>> > #hey = wut()
>>> >
>>> > # I have created a class to create the thread
>>> > class testrun(threading.Thread):
>>> > def __init__(self):
>>> > threading.Thread.__init__(self)
>>> >
>>> > def run(self):
>>> >
>>> > #heyo = 'heyo'
>>> > #self.newtest = 'hey new test'
>>> > #if a == 0:
>>> > # response.flash=T("you have run the thread a successfully")
>>> > #time.sleep(10)
>>> > #response.flash=T("you have run the thread a unsuccessfully")
>>> >
>>> > testQEF.testFunc(999,
>>> > 9,
>>> > 0.9,
>>> > 100000000,
>>> > 30.0,
>>> > 0.0,
>>> > 0.1,
>>> > "10.169.6.74",
>>> > 3,
>>> > 3,
>>> > 1,
>>> > 2,
>>> > str("C:/testdir/webservertest"))
>>> >
>>> > #Initiating the Thread
>>> > h = testrun()
>>> >
>>> > def returnA(): return 'A'
>>> >
>>> > class wut():
>>> > def __init__(self):
>>> > self.foo = 'B'
>>> >
>>> >
>>> >
>>> >
>>> > I cannot run my external python script when I click the button and
>>> also When
>>> > I do this the server is freezing.I am new to Web2py,Could Anyone help
>>> me in
>>> > this Regard.I need solution as soon as possible.
>>> >
>>> > --
>>> >
>>> > ---
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>>> >
>>> >
>>>
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>>>
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>>>
>>>
>>
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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