if there are no records in the scheduler_worker, the scheduler is not
running. Please check your "permanent daemon" solution to see if it's
running and what it logs.
On Monday, September 29, 2014 4:37:53 PM UTC+2, Pengfei Yu wrote:
>
> Hi,
>
> I have a web application hosted on AWS EC2 with Apache2. I plan to use
> web2py scheduler for some heavy tasks with user input files. Now I only use
> some small tasks like "wc -c" to test the functions of scheduler. It seems
> that the submitted tasks are always QUEUED and the status never changes.
> After searching the google group, I added "db.commit()" right after
> "scheduler.queue_task()", but it still cannot work.
>
> I've already Installed the scheduler as a permanent daemon on Linux and
> started "web2py-scheduler" using "sudo start web2py-scheduler".
>
> Here is part of my codes in default.py:
> def index():
>
> response.flash = T("Welcome to web2py!")
> form=SQLFORM(db.project,fields=['name',
> 'Genome',"File_type","InputFile"])
> if request.vars.InputFile!=None and
> request.vars.InputFile.filename.split(".")[-1]!=request.vars.File_type:
> response.flash = 'The input file must match file type, please fill
> again'
> return dict(form=form)
> if request.vars.InputFile!=None:
> form.vars.processID="0"
> if form.process().accepted:
> response.flash = 'form accepted'
> filepath = form.vars.InputFile
> command = "wc -c
> /home/www-data/web2py/applications/BamToVcf/uploads/"+filepath
> p = scheduler.queue_task('run',[command])
> db.commit()
> row = db(db.project.InputFile==filepath).select().first()
> row.update_record(processID = p.uuid)
> redirect(URL("progress",args=[p.uuid]))
> elif form.errors:
> response.flash = 'form has errors'
> else:
> response.flash = "please fill out the form"
> return dict(form=form)
>
>
> def progress():
> processID = request.args(0)
> project = db.project(db.project.processID==processID)
> status=scheduler.task_status(processID,output=True)
> start_time = utc_to_local(status.scheduler_task.start_time)
> return dict(project=project,p=status,start_time=start_time)
>
> def list():
> rows = db(db.project.id>0).select()
> return dict(rows=rows)
>
> And the code in scheduler.py in Models folder:
> from gluon.scheduler import Scheduler
> import subprocess
> from collections import OrderedDict
> import os
>
> def run(command):
> p = subprocess.Popen(command,
> shell=False,
> stdout=subprocess.PIPE,
> stderr=subprocess.PIPE)
> startTime = time.time()
> stdout, stderr = p.communicate()
> endTime = time.time()
> return (command, p.returncode, stdout, stderr, round(endTime -
> startTime))
>
> def demo2(a,b):
> return a+b
>
> scheduler = Scheduler(db,dict(run=run,demo2=demo2))
>
> From the database page ("~/%app/appadmin/index"), I can see the records of
> tasks in db.scheduler_task table but no record in db.scheduler_worker and
> db.scheduler_run table.
>
> Could any one help me figure out the problem?
>
> Thanks very much!
>
>
--
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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