209 lines
7.2 KiB
Python
209 lines
7.2 KiB
Python
#This file is part of Tryton. The COPYRIGHT file at the top level of
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#this repository contains the full copyright notices and license terms.
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import datetime
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from dateutil.relativedelta import relativedelta
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import traceback
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import sys
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import logging
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from email.mime.text import MIMEText
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from email.header import Header
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from ..model import ModelView, ModelSQL, fields
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from ..tools import safe_eval, get_smtp_server
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from ..transaction import Transaction
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from ..pool import Pool
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from .. import backend
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from ..config import CONFIG
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__all__ = [
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'Cron',
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]
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_INTERVALTYPES = {
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'days': lambda interval: relativedelta(days=interval),
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'hours': lambda interval: relativedelta(hours=interval),
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'weeks': lambda interval: relativedelta(weeks=interval),
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'months': lambda interval: relativedelta(months=interval),
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'minutes': lambda interval: relativedelta(minutes=interval),
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}
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class Cron(ModelSQL, ModelView):
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"Cron"
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__name__ = "ir.cron"
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name = fields.Char('Name', required=True, translate=True)
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user = fields.Many2One('res.user', 'Execution User', required=True,
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domain=[('active', '=', False)],
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help="The user used to execute this action")
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request_user = fields.Many2One(
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'res.user', 'Request User', required=True,
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help="The user who will receive requests in case of failure")
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active = fields.Boolean('Active', select=True)
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interval_number = fields.Integer('Interval Number', required=True)
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interval_type = fields.Selection([
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('minutes', 'Minutes'),
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('hours', 'Hours'),
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('days', 'Days'),
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('weeks', 'Weeks'),
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('months', 'Months'),
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], 'Interval Unit')
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number_calls = fields.Integer('Number of Calls', select=1, required=True,
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help=('Number of times the function is called, a negative '
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'number indicates that the function will always be '
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'called'))
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repeat_missed = fields.Boolean('Repeat Missed')
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next_call = fields.DateTime('Next Call', required=True,
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select=True)
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model = fields.Char('Model')
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function = fields.Char('Function')
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args = fields.Text('Arguments')
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@classmethod
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def __setup__(cls):
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super(Cron, cls).__setup__()
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cls._error_messages.update({
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'request_title': 'Scheduled action failed',
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'request_body': ("The following action failed to execute "
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"properly: \"%s\"\n%s\n Traceback: \n\n%s\n")
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})
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@classmethod
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def __register__(cls, module_name):
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TableHandler = backend.get('TableHandler')
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cursor = Transaction().cursor
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cron = cls.__table__()
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# Migration from 2.0: rename numbercall, doall and nextcall
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table = TableHandler(cursor, cls, module_name)
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table.column_rename('numbercall', 'number_calls')
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table.column_rename('doall', 'repeat_missed')
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table.column_rename('nextcall', 'next_call')
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table.drop_column('running')
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super(Cron, cls).__register__(module_name)
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# Migration from 2.0: work_days removed
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cursor.execute(*cron.update(
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[cron.interval_type], ['days'],
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where=cron.interval_type == 'work_days'))
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@staticmethod
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def default_next_call():
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return datetime.datetime.now()
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@staticmethod
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def default_interval_number():
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return 1
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@staticmethod
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def default_interval_type():
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return 'months'
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@staticmethod
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def default_number_calls():
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return -1
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@staticmethod
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def default_active():
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return True
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@staticmethod
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def default_repeat_missed():
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return True
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@staticmethod
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def check_xml_record(crons, values):
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return True
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@staticmethod
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def get_delta(cron):
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'''
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Return the relativedelta for the next call
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'''
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return _INTERVALTYPES[cron.interval_type](cron.interval_number)
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@classmethod
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def send_error_message(cls, cron):
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tb_s = ''.join(traceback.format_exception(*sys.exc_info()))
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tb_s = tb_s.decode('utf-8', 'ignore')
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subject = cls.raise_user_error('request_title',
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raise_exception=False)
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body = cls.raise_user_error('request_body',
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(cron.name, cron.__url__, tb_s),
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raise_exception=False)
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from_addr = CONFIG['smtp_default_from_email']
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to_addr = cron.request_user.email
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msg = MIMEText(body, _charset='utf-8')
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msg['To'] = to_addr
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msg['From'] = from_addr
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msg['Subject'] = Header(subject, 'utf-8')
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logger = logging.getLogger(__name__)
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if not to_addr:
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logger.error(msg.as_string())
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else:
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try:
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server = get_smtp_server()
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server.sendmail(from_addr, to_addr, msg.as_string())
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server.quit()
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except Exception, exception:
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logger.error('Unable to deliver email (%s):\n %s'
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% (exception, msg.as_string()))
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@classmethod
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def _callback(cls, cron):
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pool = Pool()
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Config = pool.get('ir.configuration')
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try:
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args = (cron.args or []) and safe_eval(cron.args)
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Model = pool.get(cron.model)
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with Transaction().set_user(cron.user.id):
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getattr(Model, cron.function)(*args)
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except Exception:
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Transaction().cursor.rollback()
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req_user = cron.request_user
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language = (req_user.language.code if req_user.language
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else Config.get_language())
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with Transaction().set_user(cron.user.id), \
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Transaction().set_context(language=language):
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cls.send_error_message(cron)
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@classmethod
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def run(cls, db_name):
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now = datetime.datetime.now()
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with Transaction().start(db_name, 0) as transaction:
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transaction.cursor.lock(cls._table)
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crons = cls.search([
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('number_calls', '!=', 0),
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('next_call', '<=', datetime.datetime.now()),
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])
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for cron in crons:
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try:
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next_call = cron.next_call
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number_calls = cron.number_calls
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first = True
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while next_call < now and number_calls != 0:
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if first or cron.repeat_missed:
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cls._callback(cron)
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next_call += cls.get_delta(cron)
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if number_calls > 0:
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number_calls -= 1
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first = False
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cron.next_call = next_call
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cron.number_calls = number_calls
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if not number_calls:
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cron.active = False
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cron.save()
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transaction.cursor.commit()
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except Exception:
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transaction.cursor.rollback()
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tb_s = reduce(lambda x, y: x + y,
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traceback.format_exception(*sys.exc_info()))
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tb_s = tb_s.decode('utf-8', 'ignore')
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logger = logging.getLogger('cron')
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logger.error('Exception:\n%s' % tb_s)
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