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# -*- coding: utf-8 -*-
##############################################################################
#
# OpenERP, Open Source Management Solution
# Copyright (C) 2013 ABF OSIELL (<http://osiell.com>).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
from openerp import models, fields, api, modules, _, SUPERUSER_ID
FIELDS_BLACKLIST = [
'id', 'create_uid', 'create_date', 'write_uid', 'write_date',
'display_name', '__last_update',
]
# Used for performance, to avoid a dictionary instanciation when we need an
# empty dict to simplify algorithms
EMPTY_DICT = {}
class DictDiffer(object):
"""Calculate the difference between two dictionaries as:
(1) items added
(2) items removed
(3) keys same in both but changed values
(4) keys same in both and unchanged values
"""
def __init__(self, current_dict, past_dict):
self.current_dict, self.past_dict = current_dict, past_dict
self.set_current = set(current_dict)
self.set_past = set(past_dict)
self.intersect = self.set_current.intersection(self.set_past)
def added(self):
return self.set_current - self.intersect
def removed(self):
return self.set_past - self.intersect
def changed(self):
return set(o for o in self.intersect
if self.past_dict[o] != self.current_dict[o])
def unchanged(self):
return set(o for o in self.intersect
if self.past_dict[o] == self.current_dict[o])
class auditlog_rule(models.Model):
_name = 'auditlog.rule'
_description = "Auditlog - Rule"
name = fields.Char(u"Name", size=32, required=True)
model_id = fields.Many2one(
'ir.model', u"Model", required=True,
help=u"Select model for which you want to generate log.")
user_ids = fields.Many2many(
'res.users',
'audittail_rules_users',
'user_id', 'rule_id',
string=u"Users",
help=u"if User is not added then it will applicable for all users")
log_read = fields.Boolean(
u"Log Reads",
help=(u"Select this if you want to keep track of read/open on any "
u"record of the model of this rule"))
log_write = fields.Boolean(
u"Log Writes", default=True,
help=(u"Select this if you want to keep track of modification on any "
u"record of the model of this rule"))
log_unlink = fields.Boolean(
u"Log Deletes", default=True,
help=(u"Select this if you want to keep track of deletion on any "
u"record of the model of this rule"))
log_create = fields.Boolean(
u"Log Creates", default=True,
help=(u"Select this if you want to keep track of creation on any "
u"record of the model of this rule"))
# log_action = fields.Boolean(
# "Log Action",
# help=("Select this if you want to keep track of actions on the "
# "model of this rule"))
# log_workflow = fields.Boolean(
# "Log Workflow",
# help=("Select this if you want to keep track of workflow on any "
# "record of the model of this rule"))
state = fields.Selection(
[('draft', "Draft"), ('subscribed', "Subscribed")],
string=u"State", required=True, default='draft')
action_id = fields.Many2one(
'ir.actions.act_window', string="Action")
_sql_constraints = [
('model_uniq', 'unique(model_id)',
("There is already a rule defined on this model\n"
"You cannot define another: please edit the existing one."))
]
def _register_hook(self, cr, ids=None):
"""Get all rules and apply them to log method calls."""
super(auditlog_rule, self)._register_hook(cr)
if not hasattr(self.pool, '_auditlog_field_cache'):
self.pool._auditlog_field_cache = {}
if not hasattr(self.pool, '_auditlog_model_cache'):
self.pool._auditlog_model_cache = {}
if ids is None:
ids = self.search(cr, SUPERUSER_ID, [('state', '=', 'subscribed')])
return self._patch_methods(cr, SUPERUSER_ID, ids)
@api.multi
def _patch_methods(self):
"""Patch ORM methods of models defined in rules to log their calls."""
updated = False
model_cache = self.pool._auditlog_model_cache
for rule in self:
if rule.state != 'subscribed':
continue
if not self.pool.get(rule.model_id.model):
# ignore rules for models not loadable currently
continue
model_cache[rule.model_id.model] = rule.model_id
model_model = self.env[rule.model_id.model]
# CRUD
# -> create
check_attr = 'auditlog_ruled_create'
if getattr(rule, 'log_create') \
and not hasattr(model_model, check_attr):
model_model._patch_method('create', self._make_create())
setattr(model_model, check_attr, True)
updated = True
# -> read
check_attr = 'auditlog_ruled_read'
if getattr(rule, 'log_read') \
and not hasattr(model_model, check_attr):
model_model._patch_method('read', self._make_read())
setattr(model_model, check_attr, True)
updated = True
# -> write
check_attr = 'auditlog_ruled_write'
if getattr(rule, 'log_write') \
and not hasattr(model_model, check_attr):
model_model._patch_method('write', self._make_write())
setattr(model_model, check_attr, True)
updated = True
# -> unlink
check_attr = 'auditlog_ruled_unlink'
if getattr(rule, 'log_unlink') \
and not hasattr(model_model, check_attr):
model_model._patch_method('unlink', self._make_unlink())
setattr(model_model, check_attr, True)
updated = True
return updated
@api.multi
def _revert_methods(self):
"""Restore original ORM methods of models defined in rules."""
updated = False
for rule in self:
model_model = self.env[rule.model_id.model]
for method in ['create', 'read', 'write', 'unlink']:
if getattr(rule, 'log_%s' % method):
model_model._revert_method(method)
updated = True
if updated:
modules.registry.RegistryManager.signal_registry_change(
self.env.cr.dbname)
# Unable to find a way to declare the `create` method with the new API,
# errors occurs with the `_register_hook()` BaseModel method.
def create(self, cr, uid, vals, context=None):
"""Update the registry when a new rule is created."""
res_id = super(auditlog_rule, self).create(
cr, uid, vals, context=context)
if self._register_hook(cr, [res_id]):
modules.registry.RegistryManager.signal_registry_change(cr.dbname)
return res_id
# Unable to find a way to declare the `write` method with the new API,
# errors occurs with the `_register_hook()` BaseModel method.
def write(self, cr, uid, ids, vals, context=None):
"""Update the registry when existing rules are updated."""
if isinstance(ids, (int, long)):
ids = [ids]
super(auditlog_rule, self).write(cr, uid, ids, vals, context=context)
if self._register_hook(cr, ids):
modules.registry.RegistryManager.signal_registry_change(cr.dbname)
return True
def _make_create(self):
"""Instanciate a create method that log its calls."""
@api.model
def create(self, vals, **kwargs):
rule_model = self.env['auditlog.rule']
new_record = create.origin(self, vals, **kwargs)
new_values = dict(
(d['id'], d) for d in new_record.sudo().read(
list(self._columns)))
rule_model.sudo().create_logs(
self.env.uid, self._name, new_record.ids,
'create', None, new_values)
return new_record
return create
def _make_read(self):
"""Instanciate a read method that log its calls."""
# FIXME: read() seems a bit tricky, improve to handle old/new api
# @api.v7
# def read(self, cr, user, ids, fields=None, context=None,
# load='_classic_read', **kwargs):
# print "LOG READ", fields, load, kwargs
# # avoid loops
# if self.env.context.get('auditlog_method_intercepted'):
# return read.origin(
# self, cr, user, ids, fields, context, load, **kwargs)
# # call original method with a modified context
# context = dict(
# self.env.context, auditlog_method_intercepted=True)
# result = read.origin(
# self.with_context(context),
# cr, user, ids, fields, context, load, **kwargs)
# print "RESULT", result
# return result
# @api.v8
# def read(self, fields=None, load='_classic_read', **kwargs):
# print "LOG READ", fields, load, kwargs
# # avoid loops
# if self.env.context.get('auditlog_method_intercepted'):
# return read.origin(self, fields, load, **kwargs)
# # call original method with a modified context
# context = dict(
# self.env.context, auditlog_method_intercepted=True)
# result = read.origin(
# self.with_context(context), fields, load, **kwargs)
# print "RESULT", result
# return result
def read(self, *args, **kwargs):
result = read.origin(self, *args, **kwargs)
return result
return read
def _make_write(self):
"""Instanciate a write method that log its calls."""
@api.multi
def write(self, vals, **kwargs):
rule_model = self.env['auditlog.rule']
old_values = dict(
(d['id'], d) for d in self.sudo().read(list(self._columns)))
result = write.origin(self, vals, **kwargs)
new_values = dict(
(d['id'], d) for d in self.sudo().read(list(self._columns)))
rule_model.sudo().create_logs(
self.env.uid, self._name, self.ids,
'write', old_values, new_values)
return result
return write
def _make_unlink(self):
"""Instanciate an unlink method that log its calls."""
@api.multi
def unlink(self, **kwargs):
rule_model = self.env['auditlog.rule']
rule_model.sudo().create_logs(
self.env.uid, self._name, self.ids, 'unlink')
return unlink.origin(self, **kwargs)
return unlink
def create_logs(self, uid, res_model, res_ids, method,
old_values=None, new_values=None,
additional_log_values=None):
"""Create logs. `old_values` and `new_values` are dictionnaries, e.g:
{RES_ID: {'FIELD': VALUE, ...}}
"""
if old_values is None:
old_values = EMPTY_DICT
if new_values is None:
new_values = EMPTY_DICT
log_model = self.env['auditlog.log']
ir_model = self.env['ir.model']
for res_id in res_ids:
model_model = self.env[res_model]
res_name = model_model.browse(res_id).name_get()
vals = {
'name': res_name and res_name[0] and res_name[0][1] or False,
'model_id': self.pool._auditlog_model_cache[res_model].id,
'res_id': res_id,
'method': method,
'user_id': uid,
}
vals.update(additional_log_values)
log = log_model.create(vals)
diff = DictDiffer(
new_values.get(res_id, EMPTY_DICT),
old_values.get(res_id, EMPTY_DICT))
self._create_log_line_on_write(
log, diff.changed(), old_values, new_values)
self._create_log_line_on_create(log, diff.added(), new_values)
def _get_field(self, model, field_name):
cache = self.pool._auditlog_field_cache
if field_name not in cache.get(model.model, {}):
cache.setdefault(model.model, {})
cache[model.model][field_name] = self.env['ir.model.fields']\
.search(
[
('model_id', '=', model.id),
('name', '=', field_name),
])
return cache[model.model][field_name]
def _create_log_line_on_write(
self, log, fields_list, old_values, new_values):
"""Log field updated on a 'write' operation."""
log_line_model = self.env['auditlog.log.line']
for field_name in fields_list:
if field_name in FIELDS_BLACKLIST:
continue
field = self._get_field(log.model_id, field_name)
log_vals = self._prepare_log_line_vals_on_write(
log, field, old_values, new_values)
log_line_model.create(log_vals)
def _prepare_log_line_vals_on_write(
self, log, field, old_values, new_values):
"""Prepare the dictionary of values used to create a log line on a
'write' operation.
"""
vals = {
'field_id': field.id,
'field_name': field.name,
'field_description': field.field_description,
'log_id': log.id,
'old_value': old_values[log.res_id][field.name],
'old_value_text': old_values[log.res_id][field.name],
'new_value': new_values[log.res_id][field.name],
'new_value_text': new_values[log.res_id][field.name],
}
# for *2many fields, log the name_get
if field.relation and '2many' in field.ttype:
old_value_text = self.env[field.relation].browse(
vals['old_value']).name_get()
vals['old_value_text'] = old_value_text
new_value_text = self.env[field.relation].browse(
vals['new_value']).name_get()
vals['new_value_text'] = new_value_text
return vals
def _create_log_line_on_create(
self, log, fields_list, new_values):
"""Log field filled on a 'create' operation."""
log_line_model = self.env['auditlog.log.line']
for field_name in fields_list:
if field_name in FIELDS_BLACKLIST:
continue
field = self._get_field(log.model_id, field_name)
log_vals = self._prepare_log_line_vals_on_create(
log, field, new_values)
log_line_model.create(log_vals)
def _prepare_log_line_vals_on_create(self, log, field, new_values):
"""Prepare the dictionary of values used to create a log line on a
'create' operation.
"""
vals = {
'field_id': field.id,
'field_name': field.name,
'field_description': field.field_description,
'log_id': log.id,
'old_value': False,
'old_value_text': False,
'new_value': new_values[log.res_id][field.name],
'new_value_text': new_values[log.res_id][field.name],
}
if field.relation and '2many' in field.ttype:
new_value_text = self.env[field.relation].browse(
vals['new_value']).name_get()
vals['new_value_text'] = new_value_text
return vals
@api.multi
def subscribe(self):
"""Subscribe Rule for auditing changes on model and apply shortcut
to view logs on that model.
"""
act_window_model = self.env['ir.actions.act_window']
model_data_model = self.env['ir.model.data']
for rule in self:
# Create a shortcut to view logs
domain = "[('model_id', '=', %s), ('res_id', '=', active_id)]" % (
rule.model_id.id)
vals = {
'name': _(u"View logs"),
'res_model': 'auditlog.log',
'src_model': rule.model_id.model,
'domain': domain,
}
act_window = act_window_model.sudo().create(vals)
rule.write({'state': 'subscribed', 'action_id': act_window.id})
keyword = 'client_action_relate'
value = 'ir.actions.act_window,%s' % act_window.id
model_data_model.sudo().ir_set(
'action', keyword, 'View_log_' + rule.model_id.model,
[rule.model_id.model], value, replace=True,
isobject=True, xml_id=False)
return True
@api.multi
def unsubscribe(self):
"""Unsubscribe Auditing Rule on model."""
act_window_model = self.env['ir.actions.act_window']
ir_values_model = self.env['ir.values']
value = ''
# Revert patched methods
self._revert_methods()
for rule in self:
# Remove the shortcut to view logs
act_window = act_window_model.search(
[('name', '=', 'View Log'),
('res_model', '=', 'auditlog.log'),
('src_model', '=', rule.model_id.model)])
if act_window:
value = 'ir.actions.act_window,%s' % act_window.id
act_window.unlink()
if value:
ir_value = ir_values_model.search(
[('model', '=', rule.model_id.model),
('value', '=', value)])
if ir_value:
ir_value.unlink()
self.write({'state': 'draft'})
return True