285 lines
10 KiB
Python
285 lines
10 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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import time
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from ..model import ModelView, ModelSQL, fields
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from ..pyson import Eval
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from ..tools import safe_eval
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from ..backend import TableHandler
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from ..tools import reduce_ids
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from ..transaction import Transaction
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from ..cache import Cache
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from ..pool import Pool
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__all__ = [
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'Trigger', 'TriggerLog',
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]
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class Trigger(ModelSQL, ModelView):
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"Trigger"
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__name__ = 'ir.trigger'
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name = fields.Char('Name', required=True, translate=True)
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active = fields.Boolean('Active', select=True)
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model = fields.Many2One('ir.model', 'Model', required=True, select=True)
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on_time = fields.Boolean('On Time', select=True, states={
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'invisible': (Eval('on_create', False)
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or Eval('on_write', False)
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or Eval('on_delete', False)),
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}, depends=['on_create', 'on_write', 'on_delete'],
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on_change=['on_time'])
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on_create = fields.Boolean('On Create', select=True, states={
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'invisible': Eval('on_time', False),
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}, depends=['on_time'],
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on_change=['on_create'])
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on_write = fields.Boolean('On Write', select=True, states={
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'invisible': Eval('on_time', False),
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}, depends=['on_time'],
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on_change=['on_write'])
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on_delete = fields.Boolean('On Delete', select=True, states={
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'invisible': Eval('on_time', False),
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}, depends=['on_time'],
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on_change=['on_delete'])
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condition = fields.Char('Condition', required=True,
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help='A Python statement evaluated with record represented by '
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'"self"\nIt triggers the action if true.')
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limit_number = fields.Integer('Limit Number', required=True,
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help='Limit the number of call to "Action Function" by records.\n'
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'0 for no limit.')
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minimum_delay = fields.Float('Minimum Delay', help='Set a minimum delay '
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'in minutes between call to "Action Function" for the same record.\n'
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'0 for no delay.')
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action_model = fields.Many2One('ir.model', 'Action Model', required=True)
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action_function = fields.Char('Action Function', required=True)
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_get_triggers_cache = Cache('ir_trigger.get_triggers')
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@classmethod
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def __setup__(cls):
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super(Trigger, cls).__setup__()
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cls._sql_constraints += [
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('on_exclusive',
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'CHECK(NOT(on_time AND (on_create OR on_write OR on_delete)))',
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'"On Time" and others are mutually exclusive!'),
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]
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cls._constraints += [
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('check_condition', 'invalid_condition'),
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]
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cls._error_messages.update({
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'invalid_condition': 'Condition must be a python expression!',
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})
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cls._order.insert(0, ('name', 'ASC'))
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@classmethod
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def check_condition(cls, triggers):
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'''
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Check condition
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'''
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for trigger in triggers:
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try:
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compile(trigger.condition, '', 'eval')
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except (SyntaxError, TypeError):
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return False
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return True
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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_limit_number():
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return 0
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def on_change_on_time(self):
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if self.on_time:
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return {
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'on_create': False,
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'on_write': False,
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'on_delete': False,
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}
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return {}
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def on_change_on_create(self):
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if self.on_create:
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return {
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'on_time': False,
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}
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return {}
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def on_change_on_write(self):
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if self.on_write:
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return {
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'on_time': False,
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}
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return {}
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def on_change_on_delete(self):
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if self.on_delete:
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return {
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'on_time': False,
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}
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return {}
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@classmethod
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def get_triggers(cls, model_name, mode):
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"""
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Return triggers for a model and a mode
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"""
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assert mode in ['create', 'write', 'delete', 'time'], \
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'Invalid trigger mode'
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if Transaction().user == 0:
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return [] # XXX is it want we want?
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key = (model_name, mode)
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trigger_ids = cls._get_triggers_cache.get(key)
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if trigger_ids is not None:
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return cls.browse(trigger_ids)
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triggers = cls.search([
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('model.model', '=', model_name),
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('on_%s' % mode, '=', True),
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])
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cls._get_triggers_cache.set(key, map(int, triggers))
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return triggers
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@staticmethod
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def eval(trigger, record):
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"""
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Evaluate the condition of trigger
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"""
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env = {}
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env['current_date'] = datetime.datetime.today()
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env['time'] = time
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env['context'] = Transaction().context
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env['self'] = record
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return bool(safe_eval(trigger.condition, env))
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@classmethod
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def trigger_action(cls, records, trigger):
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"""
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Trigger the action define on trigger for the records
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"""
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pool = Pool()
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TriggerLog = pool.get('ir.trigger.log')
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Model = pool.get(trigger.action_model.model)
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cursor = Transaction().cursor
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ids = map(int, records)
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# Filter on limit_number
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if trigger.limit_number:
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new_ids = []
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for i in range(0, len(ids), cursor.IN_MAX):
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sub_ids = ids[i:i + cursor.IN_MAX]
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red_sql, red_ids = reduce_ids('"record_id"', sub_ids)
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cursor.execute('SELECT "record_id", COUNT(1) FROM "%s" '
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'WHERE %s AND "trigger" = %%s '
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'GROUP BY "record_id"'
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% (TriggerLog._table, red_sql),
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red_ids + [trigger.id])
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number = dict(cursor.fetchall())
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for record_id in sub_ids:
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if record_id not in number:
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new_ids.append(record_id)
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continue
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if number[record_id] < trigger.limit_number:
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new_ids.append(record_id)
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ids = new_ids
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# Filter on minimum_delay
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if trigger.minimum_delay:
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new_ids = []
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for i in range(0, len(ids), cursor.IN_MAX):
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sub_ids = ids[i:i + cursor.IN_MAX]
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red_sql, red_ids = reduce_ids('"record_id"', sub_ids)
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cursor.execute('SELECT "record_id", MAX("create_date") '
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'FROM "%s" '
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'WHERE %s AND "trigger" = %%s '
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'GROUP BY "record_id"'
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% (TriggerLog._table, red_sql),
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red_ids + [trigger.id])
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delay = dict(cursor.fetchall())
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for record_id in sub_ids:
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if record_id not in delay:
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new_ids.append(record_id)
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continue
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# SQLite return string for MAX
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if isinstance(delay[record_id], basestring):
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datepart, timepart = delay[record_id].split(" ")
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year, month, day = map(int, datepart.split("-"))
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timepart_full = timepart.split(".")
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hours, minutes, seconds = map(int,
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timepart_full[0].split(":"))
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if len(timepart_full) == 2:
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microseconds = int(timepart_full[1])
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delay[record_id] = datetime.datetime(year, month, day,
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hours, minutes, seconds, microseconds)
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if (datetime.datetime.now() - delay[record_id]
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>= datetime.timedelta(
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minutes=trigger.minimum_delay)):
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new_ids.append(record_id)
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ids = new_ids
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records = Model.browse(ids)
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if records:
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getattr(Model, trigger.action_function)(records, trigger)
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if trigger.limit_number or trigger.minimum_delay:
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for record in records:
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TriggerLog.create({
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'trigger': trigger.id,
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'record_id': record.id,
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})
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@classmethod
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def trigger_time(cls):
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'''
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Trigger time actions
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'''
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pool = Pool()
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triggers = cls.search([
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('on_time', '=', True),
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])
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for trigger in triggers:
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Model = pool.get(trigger.model.model)
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triggered = []
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# TODO add a domain
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records = Model.search([])
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for record in records:
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if cls.eval(trigger, record):
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triggered.append(record)
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if triggered:
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cls.trigger_action(triggered, trigger)
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@classmethod
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def create(cls, values):
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res = super(Trigger, cls).create(values)
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# Restart the cache on the get_triggers method of ir.trigger
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cls._get_triggers_cache.clear()
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return res
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@classmethod
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def write(cls, ids, values):
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res = super(Trigger, cls).write(ids, values)
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# Restart the cache on the get_triggers method of ir.trigger
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cls._get_triggers_cache.clear()
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return res
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@classmethod
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def delete(cls, records):
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super(Trigger, cls).delete(records)
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# Restart the cache on the get_triggers method of ir.trigger
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cls._get_triggers_cache.clear()
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class TriggerLog(ModelSQL):
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'Trigger Log'
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__name__ = 'ir.trigger.log'
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trigger = fields.Many2One('ir.trigger', 'Trigger', required=True)
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record_id = fields.Integer('Record ID', required=True)
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@classmethod
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def __register__(cls, module_name):
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super(TriggerLog, cls).__register__(module_name)
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table = TableHandler(Transaction().cursor, cls, module_name)
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table.index_action(['trigger', 'record_id'], 'add')
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