/usr/lib/python2.7/dist-packages/trytond/ir/trigger.py is in tryton-server 3.8.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# this repository contains the full copyright notices and license terms.
import datetime
import time
from sql import Literal, Null
from sql.aggregate import Count, Max
from ..model import ModelView, ModelSQL, fields, EvalEnvironment, Check
from ..pyson import Eval, PYSONDecoder
from ..tools import grouped_slice
from .. import backend
from ..tools import reduce_ids
from ..transaction import Transaction
from ..cache import Cache
from ..pool import Pool
__all__ = [
'Trigger', 'TriggerLog',
]
class Trigger(ModelSQL, ModelView):
"Trigger"
__name__ = 'ir.trigger'
name = fields.Char('Name', required=True, translate=True)
active = fields.Boolean('Active', select=True)
model = fields.Many2One('ir.model', 'Model', required=True, select=True)
on_time = fields.Boolean('On Time', select=True, states={
'invisible': (Eval('on_create', False)
| Eval('on_write', False)
| Eval('on_delete', False)),
}, depends=['on_create', 'on_write', 'on_delete'])
on_create = fields.Boolean('On Create', select=True, states={
'invisible': Eval('on_time', False),
}, depends=['on_time'])
on_write = fields.Boolean('On Write', select=True, states={
'invisible': Eval('on_time', False),
}, depends=['on_time'])
on_delete = fields.Boolean('On Delete', select=True, states={
'invisible': Eval('on_time', False),
}, depends=['on_time'])
condition = fields.Char('Condition', required=True,
help='A PYSON statement evaluated with record represented by '
'"self"\nIt triggers the action if true.')
limit_number = fields.Integer('Limit Number', required=True,
help='Limit the number of call to "Action Function" by records.\n'
'0 for no limit.')
minimum_time_delay = fields.TimeDelta('Minimum Delay',
help='Set a minimum time delay between call to "Action Function" '
'for the same record.\n'
'empty for no delay.')
action_model = fields.Many2One('ir.model', 'Action Model', required=True)
action_function = fields.Char('Action Function', required=True)
_get_triggers_cache = Cache('ir_trigger.get_triggers')
@classmethod
def __setup__(cls):
super(Trigger, cls).__setup__()
t = cls.__table__()
cls._sql_constraints += [
('on_exclusive',
Check(t, ~((t.on_time == True)
& ((t.on_create == True)
| (t.on_write == True)
| (t.on_delete == True)))),
'"On Time" and others are mutually exclusive!'),
]
cls._error_messages.update({
'invalid_condition': ('Condition "%(condition)s" is not a '
'valid PYSON expression on trigger "%(trigger)s".'),
})
cls._order.insert(0, ('name', 'ASC'))
@classmethod
def __register__(cls, module_name):
TableHandler = backend.get('TableHandler')
cursor = Transaction().cursor
table = TableHandler(cursor, cls, module_name)
sql_table = cls.__table__()
super(Trigger, cls).__register__(module_name)
# Migration from 3.4:
# change minimum_delay into timedelta minimum_time_delay
if table.column_exist('minimum_delay'):
cursor.execute(*sql_table.select(
sql_table.id, sql_table.minimum_delay,
where=sql_table.minimum_delay != Null))
for id_, delay in cursor.fetchall():
delay = datetime.timedelta(hours=delay)
cursor.execute(*sql_table.update(
[sql_table.minimum_time_delay],
[delay],
where=sql_table.id == id_))
table.drop_column('minimum_delay')
@classmethod
def validate(cls, triggers):
super(Trigger, cls).validate(triggers)
cls.check_condition(triggers)
@classmethod
def check_condition(cls, triggers):
'''
Check condition
'''
for trigger in triggers:
try:
PYSONDecoder(noeval=True).decode(trigger.condition)
except Exception:
cls.raise_user_error('invalid_condition', {
'condition': trigger.condition,
'trigger': trigger.rec_name,
})
@staticmethod
def default_active():
return True
@staticmethod
def default_limit_number():
return 0
@fields.depends('on_time')
def on_change_on_time(self):
if self.on_time:
self.on_create = False
self.on_write = False
self.on_delete = False
@fields.depends('on_create')
def on_change_on_create(self):
if self.on_create:
self.on_time = False
@fields.depends('on_write')
def on_change_on_write(self):
if self.on_write:
self.on_time = False
@fields.depends('on_delete')
def on_change_on_delete(self):
if self.on_delete:
self.on_time = False
@classmethod
def get_triggers(cls, model_name, mode):
"""
Return triggers for a model and a mode
"""
assert mode in ['create', 'write', 'delete', 'time'], \
'Invalid trigger mode'
if Transaction().user == 0 and not Transaction().context.get('user'):
return []
key = (model_name, mode)
trigger_ids = cls._get_triggers_cache.get(key)
if trigger_ids is not None:
return cls.browse(trigger_ids)
triggers = cls.search([
('model.model', '=', model_name),
('on_%s' % mode, '=', True),
])
cls._get_triggers_cache.set(key, map(int, triggers))
return triggers
@staticmethod
def eval(trigger, record):
"""
Evaluate the condition of trigger
"""
env = {}
env['current_date'] = datetime.datetime.today()
env['time'] = time
env['context'] = Transaction().context
env['self'] = EvalEnvironment(record, record.__class__)
return bool(PYSONDecoder(env).decode(trigger.condition))
@classmethod
def trigger_action(cls, records, trigger):
"""
Trigger the action define on trigger for the records
"""
pool = Pool()
TriggerLog = pool.get('ir.trigger.log')
Model = pool.get(trigger.model.model)
ActionModel = pool.get(trigger.action_model.model)
cursor = Transaction().cursor
trigger_log = TriggerLog.__table__()
ids = map(int, records)
# Filter on limit_number
if trigger.limit_number:
new_ids = []
for sub_ids in grouped_slice(ids):
sub_ids = list(sub_ids)
red_sql = reduce_ids(trigger_log.record_id, sub_ids)
cursor.execute(*trigger_log.select(
trigger_log.record_id, Count(Literal(1)),
where=red_sql & (trigger_log.trigger == trigger.id),
group_by=trigger_log.record_id))
number = dict(cursor.fetchall())
for record_id in sub_ids:
if record_id not in number:
new_ids.append(record_id)
continue
if number[record_id] < trigger.limit_number:
new_ids.append(record_id)
ids = new_ids
# Filter on minimum_time_delay
if trigger.minimum_time_delay:
new_ids = []
for sub_ids in grouped_slice(ids):
sub_ids = list(sub_ids)
red_sql = reduce_ids(trigger_log.record_id, sub_ids)
cursor.execute(*trigger_log.select(
trigger_log.record_id, Max(trigger_log.create_date),
where=red_sql & (trigger_log.trigger == trigger.id),
group_by=trigger_log.record_id))
delay = dict(cursor.fetchall())
for record_id in sub_ids:
if record_id not in delay:
new_ids.append(record_id)
continue
# SQLite return string for MAX
if isinstance(delay[record_id], basestring):
datepart, timepart = delay[record_id].split(" ")
year, month, day = map(int, datepart.split("-"))
timepart_full = timepart.split(".")
hours, minutes, seconds = map(int,
timepart_full[0].split(":"))
if len(timepart_full) == 2:
microseconds = int(timepart_full[1])
else:
microseconds = 0
delay[record_id] = datetime.datetime(year, month, day,
hours, minutes, seconds, microseconds)
if (datetime.datetime.now() - delay[record_id]
>= trigger.minimum_time_delay):
new_ids.append(record_id)
ids = new_ids
records = Model.browse(ids)
if records:
getattr(ActionModel, trigger.action_function)(records, trigger)
if trigger.limit_number or trigger.minimum_time_delay:
to_create = []
for record in records:
to_create.append({
'trigger': trigger.id,
'record_id': record.id,
})
if to_create:
TriggerLog.create(to_create)
@classmethod
def trigger_time(cls):
'''
Trigger time actions
'''
pool = Pool()
triggers = cls.search([
('on_time', '=', True),
])
for trigger in triggers:
Model = pool.get(trigger.model.model)
triggered = []
# TODO add a domain
records = Model.search([])
for record in records:
if cls.eval(trigger, record):
triggered.append(record)
if triggered:
cls.trigger_action(triggered, trigger)
@classmethod
def create(cls, vlist):
res = super(Trigger, cls).create(vlist)
# Restart the cache on the get_triggers method of ir.trigger
cls._get_triggers_cache.clear()
return res
@classmethod
def write(cls, triggers, values, *args):
super(Trigger, cls).write(triggers, values, *args)
# Restart the cache on the get_triggers method of ir.trigger
cls._get_triggers_cache.clear()
@classmethod
def delete(cls, records):
super(Trigger, cls).delete(records)
# Restart the cache on the get_triggers method of ir.trigger
cls._get_triggers_cache.clear()
class TriggerLog(ModelSQL):
'Trigger Log'
__name__ = 'ir.trigger.log'
trigger = fields.Many2One('ir.trigger', 'Trigger', required=True)
record_id = fields.Integer('Record ID', required=True)
@classmethod
def __register__(cls, module_name):
TableHandler = backend.get('TableHandler')
super(TriggerLog, cls).__register__(module_name)
table = TableHandler(Transaction().cursor, cls, module_name)
table.index_action(['trigger', 'record_id'], 'add')
|