314 lines
14 KiB
Python
314 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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##############################################################################
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#
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# OpenERP, Open Source Management Solution
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# Copyright (C) 2004-TODAY OpenERP S.A. <http://www.openerp.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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##############################################################################
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import time
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import logging
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import threading
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import psycopg2
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from datetime import datetime
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from dateutil.relativedelta import relativedelta
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import netsvc
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import tools
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from tools.safe_eval import safe_eval as eval
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import pooler
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from osv import fields, osv
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import openerp
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def str2tuple(s):
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return eval('tuple(%s)' % (s or ''))
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_intervalTypes = {
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'work_days': lambda interval: relativedelta(days=interval),
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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(days=7*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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JOB = {
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'function': u'f',
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'interval_type': u'minutes',
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'user_id': 1,
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'name': u'test',
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'args': False,
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'numbercall': 1,
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'nextcall': datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
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'priority': 5,
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'doall': True,
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'active': True,
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'interval_number': 1,
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'model': u'ir.cron'
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}
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class ir_cron(osv.osv):
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""" This is the ORM object that periodically executes actions.
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"""
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_name = "ir.cron"
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_order = 'name'
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_columns = {
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'name': fields.char('Name', size=60, required=True),
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'user_id': fields.many2one('res.users', 'User', required=True),
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'active': fields.boolean('Active'),
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'interval_number': fields.integer('Interval Number',help="Repeat every x."),
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'interval_type': fields.selection( [('minutes', 'Minutes'),
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('hours', 'Hours'), ('work_days','Work Days'), ('days', 'Days'),('weeks', 'Weeks'), ('months', 'Months')], 'Interval Unit'),
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'numbercall': fields.integer('Number of Calls', help='Number of time the function is called,\na negative number indicates no limit'),
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'doall' : fields.boolean('Repeat Missed', help="Enable this if you want to execute missed occurences as soon as the server restarts."),
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'nextcall' : fields.datetime('Next Execution Date', required=True, help="Next planned execution date for this scheduler"),
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'model': fields.char('Object', size=64, help="Name of object whose function will be called when this scheduler will run. e.g. 'res.partener'"),
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'function': fields.char('Function', size=64, help="Name of the method to be called on the object when this scheduler is executed."),
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'args': fields.text('Arguments', help="Arguments to be passed to the method. e.g. (uid,)"),
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'priority': fields.integer('Priority', help='0=Very Urgent\n10=Not urgent')
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}
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_defaults = {
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'nextcall' : lambda *a: time.strftime('%Y-%m-%d %H:%M:%S'),
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'priority' : lambda *a: 5,
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'user_id' : lambda obj,cr,uid,context: uid,
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'interval_number' : lambda *a: 1,
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'interval_type' : lambda *a: 'months',
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'numbercall' : lambda *a: 1,
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'active' : lambda *a: 1,
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'doall' : lambda *a: 1
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}
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_logger = logging.getLogger('cron')
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def f(a, b, c):
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print ">>> in f"
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def expensive(a, b, c):
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print ">>> in expensive"
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time.sleep(80)
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print ">>> out expensive"
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def expensive_2(a, b, c):
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print ">>> in expensive_2"
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time.sleep(30)
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print ">>> out expensive_2"
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def _check_args(self, cr, uid, ids, context=None):
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try:
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for this in self.browse(cr, uid, ids, context):
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str2tuple(this.args)
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except Exception:
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return False
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return True
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_constraints = [
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(_check_args, 'Invalid arguments', ['args']),
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]
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def _handle_callback_exception(self, cr, uid, model, func, args, job_id, job_exception):
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cr.rollback()
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self._logger.exception("Call of self.pool.get('%s').%s(cr, uid, *%r) failed in Job %s" % (model, func, args, job_id))
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def _callback(self, cr, uid, model, func, args, job_id):
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args = str2tuple(args)
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m = self.pool.get(model)
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if m and hasattr(m, func):
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f = getattr(m, func)
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try:
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netsvc.log('cron', (cr.dbname,uid,'*',model,func)+tuple(args), channel=logging.DEBUG,
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depth=(None if self._logger.isEnabledFor(logging.DEBUG_RPC_ANSWER) else 1), fn='object.execute')
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logger = logging.getLogger('execution time')
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if logger.isEnabledFor(logging.DEBUG):
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start_time = time.time()
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f(cr, uid, *args)
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if logger.isEnabledFor(logging.DEBUG):
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end_time = time.time()
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logger.log(logging.DEBUG, '%.3fs (%s, %s)' % (end_time - start_time, model, func))
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except Exception, e:
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self._handle_callback_exception(cr, uid, model, func, args, job_id, e)
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def _run_job(self, cr, job, now):
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""" Run a given job taking care of the repetition. """
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try:
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nextcall = datetime.strptime(job['nextcall'], '%Y-%m-%d %H:%M:%S')
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numbercall = job['numbercall']
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ok = False
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while nextcall < now and numbercall:
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if numbercall > 0:
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numbercall -= 1
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if not ok or job['doall']:
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self._callback(cr, job['user_id'], job['model'], job['function'], job['args'], job['id'])
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if numbercall:
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nextcall += _intervalTypes[job['interval_type']](job['interval_number'])
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ok = True
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addsql = ''
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if not numbercall:
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addsql = ', active=False'
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cr.execute("update ir_cron set nextcall=%s, numbercall=%s"+addsql+" where id=%s", (nextcall.strftime('%Y-%m-%d %H:%M:%S'), numbercall, job['id']))
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if numbercall:
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# Reschedule our own main cron thread if necessary.
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# This is really needed if this job runs longer than its rescheduling period.
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print ">>> advance at", nextcall
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nextcall = time.mktime(nextcall.timetuple())
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openerp.cron.schedule_in_advance(nextcall, cr.dbname)
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finally:
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cr.commit()
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cr.close()
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openerp.cron.inc_thread_count()
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def _run_jobs(self):
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# TODO remove 'check' argument from addons/base_action_rule/base_action_rule.py
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""" Process the cron jobs by spawning worker threads.
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This selects in database all the jobs that should be processed. It then
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try to lock each of them and, if it succeeds, spawn a thread to run the
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cron job (if doesn't succeed, it means another the job was already
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locked to be taken care of by another thread.
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"""
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print ">>> _run_jobs"
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db = self.pool.db
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cr = db.cursor()
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db_name = db.dbname
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try:
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jobs = {} # mapping job ids to jobs for all jobs being processed.
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now = datetime.now()
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cr.execute('select * from ir_cron where numbercall<>0 and active and nextcall<=now() order by priority')
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for job in cr.dictfetchall():
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print ">>>", openerp.cron.get_thread_count(), "threads"
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if not openerp.cron.get_thread_count():
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break
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task_cr = db.cursor()
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task_job = None
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jobs[job['id']] = job
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try:
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# Try to lock the job...
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task_cr.execute('select * from ir_cron where id=%s for update nowait', (job['id'],), log_exceptions=False)
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task_job = task_cr.dictfetchall()[0]
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except psycopg2.OperationalError, e:
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if e.pgcode == '55P03':
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# Class 55: Object not in prerequisite state, 55P03: lock_not_available
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# ... and fail.
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print ">>>", job['name'], " is already being processed"
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continue
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else:
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raise
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finally:
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if not task_job:
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task_cr.close()
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# ... and succeed.
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print ">>> taking care of", job['name']
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task_thread = threading.Thread(target=self._run_job, name=task_job['name'], args=(task_cr, task_job, now))
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# force non-daemon task threads (the runner thread must be daemon, and this property is inherited by default)
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task_thread.setDaemon(False)
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openerp.cron.dec_thread_count()
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task_thread.start()
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# Wake up time, without considering the currently processed jobs.
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if jobs.keys():
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cr.execute('select min(nextcall) as min_next_call from ir_cron where numbercall<>0 and active and id not in %s', (tuple(jobs.keys()),))
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else:
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cr.execute('select min(nextcall) as min_next_call from ir_cron where numbercall<>0 and active')
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next_call = cr.dictfetchone()['min_next_call']
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print ">>> possibility at ", next_call
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if next_call:
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next_call = time.mktime(time.strptime(next_call, '%Y-%m-%d %H:%M:%S'))
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else:
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next_call = int(time.time()) + 3600 # if do not find active cron job from database, it will run again after 1 day
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openerp.cron.schedule_in_advance(next_call, db_name)
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except Exception, ex:
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self._logger.warning('Exception in cron:', exc_info=True)
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finally:
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cr.commit()
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cr.close()
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def update_running_cron(self, cr):
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# Verify whether the server is already started and thus whether we need to commit
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# immediately our changes and restart the cron agent in order to apply the change
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# immediately. The commit() is needed because as soon as the cron is (re)started it
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# will query the database with its own cursor, possibly before the end of the
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# current transaction.
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# This commit() is not an issue in most cases, but we must absolutely avoid it
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# when the server is only starting or loading modules (hence the test on pool._init).
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if not self.pool._init:
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cr.commit()
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openerp.cron.schedule_in_advance(1, self.pool.db.dbname)
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def _20_seconds(self, cr, uid):
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print ">>> in _20_seconds"
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time.sleep(20)
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print ">>> out _20_seconds"
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def _80_seconds(self, cr, uid):
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print ">>> in _80_seconds"
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time.sleep(80)
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print ">>> out _80_seconds"
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def test_0(self, cr, uid):
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now = datetime.now()
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t1 = (now + relativedelta(minutes=1)).strftime('%Y-%m-%d %H:%M:%S')
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t2 = (now + relativedelta(minutes=1, seconds=5)).strftime('%Y-%m-%d %H:%M:%S')
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t3 = (now + relativedelta(minutes=1, seconds=10)).strftime('%Y-%m-%d %H:%M:%S')
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self.create(cr, uid, dict(JOB, name='test_0 _20_seconds A', function='_20_seconds', nextcall=t1))
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self.create(cr, uid, dict(JOB, name='test_0 _20_seconds B', function='_20_seconds', nextcall=t2))
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self.create(cr, uid, dict(JOB, name='test_0 _20_seconds C', function='_20_seconds', nextcall=t3))
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def test_1(self, cr, uid):
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now = datetime.now()
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t1 = (now + relativedelta(minutes=1)).strftime('%Y-%m-%d %H:%M:%S')
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self.create(cr, uid, dict(JOB, name='test_1 _20_seconds * 3', function='_20_seconds', nextcall=t1, numbercall=3))
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def test_2(self, cr, uid):
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now = datetime.now()
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t1 = (now + relativedelta(minutes=1)).strftime('%Y-%m-%d %H:%M:%S')
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self.create(cr, uid, dict(JOB, name='test_2 _80_seconds * 2', function='_80_seconds', nextcall=t1, numbercall=2))
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def test_3(self, cr, uid):
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now = datetime.now()
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t1 = (now + relativedelta(minutes=1)).strftime('%Y-%m-%d %H:%M:%S')
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t2 = (now + relativedelta(minutes=1, seconds=5)).strftime('%Y-%m-%d %H:%M:%S')
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t3 = (now + relativedelta(minutes=1, seconds=10)).strftime('%Y-%m-%d %H:%M:%S')
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self.create(cr, uid, dict(JOB, name='test_3 _80_seconds A', function='_80_seconds', nextcall=t1))
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self.create(cr, uid, dict(JOB, name='test_3 _20_seconds B', function='_20_seconds', nextcall=t2))
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self.create(cr, uid, dict(JOB, name='test_3 _20_seconds C', function='_20_seconds', nextcall=t3))
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def create(self, cr, uid, vals, context=None):
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res = super(ir_cron, self).create(cr, uid, vals, context=context)
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self.update_running_cron(cr)
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return res
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def write(self, cr, user, ids, vals, context=None):
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res = super(ir_cron, self).write(cr, user, ids, vals, context=context)
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self.update_running_cron(cr)
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return res
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def unlink(self, cr, uid, ids, context=None):
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res = super(ir_cron, self).unlink(cr, uid, ids, context=context)
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self.update_running_cron(cr)
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return res
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ir_cron()
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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