there's yet a scheduler_task table in the database. Fix migrations in the
usual way, or set Scheduler(db,....,migrate=False) to avoid the error.
On Tuesday, August 26, 2014 8:58:06 AM UTC+2, Prasad Muley wrote:
>
> Hi,
> I've web2py 2.3 version. I tried to use scheduler for mail sending.
> I got this error while creating a worker for scheduler
>
> $ python web2py.py -K send_mail_app
>
>
> [12:07:02]
> web2py Web Framework
> Created by Massimo Di Pierro, Copyright 2007-2014
> Version 2.3.2 (2012-12-17 15:03:30) stable
> Database drivers available: SQLite(sqlite2), SQLite(sqlite3),
> MySQL(pymysql), MySQL(MySQLdb), PostgreSQL(psycopg2), PostgreSQL(pg8000),
> MSSQL(pyodbc), DB2(pyodbc), Teradata(pyodbc), IMAP(imaplib)
> starting single-scheduler for "send_mail_app"...
> Traceback (most recent call last):
> File "/home/prasad/Rootpy/web2py 2.3/gluon/restricted.py", line 212, in
> restricted
> exec ccode in environment
> File "applications/send_mail_app/models/scheduler.py", line 2, in
> <module>
> mail_scheduler = Scheduler(db)
> File "/home/prasad/Rootpy/web2py 2.3/gluon/scheduler.py", line 449, in
> __init__
> self.define_tables(db, migrate=migrate)
> File "/home/prasad/Rootpy/web2py 2.3/gluon/scheduler.py", line 501, in
> define_tables
> migrate=migrate, format='%(task_name)s')
> File "/home/prasad/Rootpy/web2py 2.3/gluon/dal.py", line 7186, in
> define_table
> table = self.lazy_define_table(tablename,*fields,**args)
> File "/home/prasad/Rootpy/web2py 2.3/gluon/dal.py", line 7222, in
> lazy_define_table
> polymodel=polymodel)
> File "/home/prasad/Rootpy/web2py 2.3/gluon/dal.py", line 935, in
> create_table
> self.create_sequence_and_triggers(query,table)
> File "/home/prasad/Rootpy/web2py 2.3/gluon/dal.py", line 1694, in
> create_sequence_and_triggers
> self.execute(query)
> File "/home/prasad/Rootpy/web2py 2.3/gluon/dal.py", line 1709, in execute
> return self.log_execute(*a, **b)
> File "/home/prasad/Rootpy/web2py 2.3/gluon/dal.py", line 1703, in
> log_execute
> ret = self.cursor.execute(*a, **b)
> File "/usr/local/lib/python2.7/dist-packages/MySQLdb/cursors.py", line
> 201, in execute
> self.errorhandler(self, exc, value)
> File "/usr/local/lib/python2.7/dist-packages/MySQLdb/connections.py",
> line 36, in defaulterrorhandler
> raise errorclass, errorvalue
> OperationalError: (1050, "Table 'scheduler_task' already exists")
>
> I've followed following instructions.
>
> *1) Created a file models/scheduler.py*
>
> #code from scheduler.py file
> from gluon.scheduler import Scheduler
> mail_scheduler = Scheduler(db)
>
>
> def send_mail(to, subject, message, cc=None, bcc=None,
> attachments=None):
> """
> This module is called by scheduler.
> You can check scheduler_task table and scheduler.task_status table
> """
> if cc is None:
> cc = []
> if bcc is None:
> bcc = []
> if attachments is None:
> attachments = []
> #sending mail
> mail.send(to=to, cc=cc, bcc=bcc,
> subject=subject, message=message,
> attachments=attachments)
>
> *2) Called send_mail module in an external script.*
> (scripts/send_mails.py)
>
> #extra code here
> task = mail_scheduler.queue_task('send_mail',
> pvars={'to': email,
> 'subject': subject,
> 'message': html_email},
>
> start_time=datetime.datetime.now())
> print task
>
>
> *3) Created a worker and got above error*
>
>
> Am I missing some steps?
>
--
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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