I just put together an Ubuntu VM to test in and yeah, the scheduler doesn't
work quite right there either. First off it appears that the DB tables
don't get defined there either without intervention -- I changed
migrate=False to migrate=True on line 265 and then running *python web2py.py
-K scheduler* worked better. At least under linux only one web2py process
gets started. The scheduler also spotted my task and attempted to run it
... and failed. But at least in Linux the scheduler actually recognizes and
records that the task failed. Also, hitting ctrl+c only once successfully
kills off the scheduler unlike under Windows where you've got to do it over
and over again.
It looks like the task fails because os.environ['WEB2PY_PATH'] is not
defined. I thought that adding the -f option to web2py.py was supposed to
set this but that doesn't work either (as in *python web2py.py -K scheduler
-f */full/path/to/web2py/).
Below is a (truncated) record of a scheduler run under linux:
---------------------------
brian@brian-Ubuntu1104:~/web2py/trunk/web2py$ python web2py.py -K scheduler
web2py Web Framework
Created by Massimo Di Pierro, Copyright 2007-2011
Version 1.98.2 (2011-09-03 22:30:05)
Database drivers available: SQLite3, pymysql
starting scheduler for "scheduler"...
DEBUG:root:defining tables (migrate=True)
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root:thread building own DAL object
DEBUG:root:defining tables (migrate=False)
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
DEBUG:root:........recording heartbeat
DEBUG:root: freeing workers that have not sent heartbeat
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
...
DEBUG:root:........recording heartbeat
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 1 tasks
DEBUG:root: releasing all but one (running)
DEBUG:root: new scheduler_run record
INFO:root:new task 1 "demo1" scheduler.demo1
DEBUG:root: new task allocated: scheduler.demo1
DEBUG:root: task starting
DEBUG:root: task started
DEBUG:root: new task report: FAILED
DEBUG:root: traceback: Traceback (most recent call last):
File "/home/brian/web2py/trunk/web2py/gluon/scheduler.py", line 119, in
executor
os.chdir(os.environ['WEB2PY_PATH'])
File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
raise KeyError(key)
KeyError: 'WEB2PY_PATH'
DEBUG:root: task completed or failed
DEBUG:root: recording task report in db (FAILED)
INFO:root:task completed (FAILED)
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
DEBUG:root:........recording heartbeat
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
...
DEBUG:root:........recording heartbeat
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
DEBUG:root:........recording heartbeat
DEBUG:root: freeing workers that have not sent heartbeat
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
..
DEBUG:root:........recording heartbeat
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
DEBUG:root:........recording heartbeat
DEBUG:root:looping...
DEBUG:root: grabbing all queued tasks
DEBUG:root: grabbed 0 tasks
DEBUG:root:sleeping...
^CINFO:root:die!
brian@brian-Ubuntu1104:~/web2py/trunk/web2py$
