bin/workflow/workitem.py

   1 ##############################################################################
   2 #
   3 # Copyright (c) 2004 TINY SPRL. (http://tiny.be) All Rights Reserved.
   4 #                    Fabien Pinckaers <fp@tiny.Be>
   5 #
   6 # WARNING: This program as such is intended to be used by professional
   7 # programmers who take the whole responsability of assessing all potential
   8 # consequences resulting from its eventual inadequacies and bugs
   9 # End users who are looking for a ready-to-use solution with commercial
  10 # garantees and support are strongly adviced to contract a Free Software
  11 # Service Company
  12 #
  13 # This program is Free Software; you can redistribute it and/or
  14 # modify it under the terms of the GNU General Public License
  15 # as published by the Free Software Foundation; either version 2
  16 # of the License, or (at your option) any later version.
  17 #
  18 # This program is distributed in the hope that it will be useful,
  19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 # GNU General Public License for more details.
  22 #
  23 # You should have received a copy of the GNU General Public License
  24 # along with this program; if not, write to the Free Software
  25 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26 #
  27 ##############################################################################
  28
  29 #
  30 # TODO:
  31 # cr.execute('delete from wkf_triggers where model=%s and res_id=%d', (res_type,res_id))
  32 #
  33
  34 import netsvc
  35 import instance
  36
  37 import wkf_expr
  38 import wkf_logs
  39
  40 def create(cr, act_datas, inst_id, ident):
  41         for act in act_datas:
  42                 cr.execute("select nextval('wkf_workitem_id_seq')")
  43                 id_new = cr.fetchone()[0]
  44                 cr.execute("insert into wkf_workitem (id,act_id,inst_id,state) values (%d,%s,%s,'active')", (id_new, act['id'], inst_id))
  45                 cr.execute('select * from wkf_workitem where id=%d',(id_new,))
  46                 res = cr.dictfetchone()
  47                 wkf_logs.log(cr,ident,act['id'],'active')
  48                 process(cr, res, ident)
  49
  50 def process(cr, workitem, ident, signal=None, force_running=False):
  51         cr.execute('select * from wkf_activity where id=%d', (workitem['act_id'],))
  52         activity = cr.dictfetchone()
  53
  54         triggers = False
  55         if workitem['state']=='active':
  56                 triggers = True
  57                 if not _execute(cr, workitem, activity, ident):
  58                         return False
  59
  60         if workitem['state']=='running':
  61                 pass
  62
  63         if workitem['state']=='complete' or force_running:
  64                 ok = _split_test(cr, workitem, activity['split_mode'], ident, signal)
  65                 triggers = triggers and not ok
  66
  67         if triggers:
  68                 cr.execute('select * from wkf_transition where act_from=%d', (workitem['act_id'],))
  69                 alltrans = cr.dictfetchall()
  70                 for trans in alltrans:
  71                         if trans['trigger_model']:
  72                                 ids = wkf_expr._eval_expr(cr,ident,workitem,trans['trigger_expr_id'])
  73                                 for res_id in ids:
  74                                         cr.execute('select nextval(\'wkf_triggers_id_seq\')')
  75                                         id =cr.fetchone()[0]
  76                                         cr.execute('insert into wkf_triggers (model,res_id,instance_id,workitem_id,id) values (%s,%d,%d,%d,%d)', (trans['trigger_model'],res_id,workitem['inst_id'], workitem['id'], id))
  77
  78         return True
  79
  80
  81 # ---------------------- PRIVATE FUNCS --------------------------------
  82
  83 def _state_set(cr, workitem, activity, state, ident):
  84         cr.execute('update wkf_workitem set state=%s where id=%d', (state,workitem['id']))
  85         workitem['state'] = state
  86         wkf_logs.log(cr,ident,activity['id'],state)
  87
  88 def _execute(cr, workitem, activity, ident):
  89         #
  90         # send a signal to parent workflow (signal: subflow.signal_name)
  91         #
  92         if (workitem['state']=='active') and activity['signal_send']:
  93                 cr.execute("select i.id,w.osv,i.res_id from wkf_instance i left join wkf w on (i.wkf_id=w.id) where i.id in (select inst_id from wkf_workitem where subflow_id=%d)", (workitem['inst_id'],))
  94                 for i in cr.fetchall():
  95                         instance.validate(cr, i[0], (ident[0],i[1],i[2]), activity['signal_send'], force_running=True)
  96
  97
  98
  99         if activity['kind']=='dummy':
 100                 if workitem['state']=='active':
 101                         _state_set(cr, workitem, activity, 'complete', ident)
 102         elif activity['kind']=='function':
 103                 if workitem['state']=='active':
 104                         _state_set(cr, workitem, activity, 'running', ident)
 105                         wkf_expr.execute(cr, ident, workitem, activity)
 106                         _state_set(cr, workitem, activity, 'complete', ident)
 107         elif activity['kind']=='stopall':
 108                 if workitem['state']=='active':
 109                         _state_set(cr, workitem, activity, 'running', ident)
 110                         cr.execute('delete from wkf_workitem where inst_id=%d and id<>%d', (workitem['inst_id'], workitem['id']))
 111                         if activity['action']:
 112                                 wkf_expr.execute(cr, ident, workitem, activity)
 113                         _state_set(cr, workitem, activity, 'complete', ident)
 114         elif activity['kind']=='subflow':
 115                 if workitem['state']=='active':
 116                         _state_set(cr, workitem, activity, 'running', ident)
 117                         if activity.get('action', False):
 118                                 id_new = wkf_expr.execute(cr, ident, workitem, activity)
 119                                 if not (id_new):
 120                                         cr.execute('delete from wkf_workitem where id=%s', (workitem['id'],))
 121                                         return False
 122                                 assert type(id_new)==type(1) or type(id_new)==type(1L), 'Wrong return value: '+str(id_new)+' '+str(type(id_new))
 123                                 cr.execute('select id from wkf_instance where res_id=%d and wkf_id=%d', (id_new,activity['subflow_id']))
 124                                 id_new = cr.fetchone()[0]
 125                         else:
 126                                 id_new = instance.create(cr, ident, activity['subflow_id'])
 127                         cr.execute('update wkf_workitem set subflow_id=%d where id=%s', (id_new, workitem['id']))
 128                         workitem['subflow_id'] = id_new
 129                 if workitem['state']=='running':
 130                         cr.execute("select state from wkf_instance where id=%d", (workitem['subflow_id'],))
 131                         state= cr.fetchone()[0]
 132                         if state=='complete':
 133                                 _state_set(cr, workitem, activity, 'complete', ident)
 134         return True
 135
 136 def _split_test(cr, workitem, split_mode, ident, signal=None):
 137         cr.execute('select * from wkf_transition where act_from=%d', (workitem['act_id'],))
 138         test = False
 139         transitions = []
 140         alltrans = cr.dictfetchall()
 141         if split_mode=='XOR' or split_mode=='OR':
 142                 for transition in alltrans:
 143                         if wkf_expr.check(cr, workitem, ident, transition,signal):
 144                                 test = True
 145                                 transitions.append((transition['id'], workitem['inst_id']))
 146                                 if split_mode=='XOR':
 147                                         break
 148         else:
 149                 test = True
 150                 for transition in alltrans:
 151                         if not wkf_expr.check(cr, workitem, ident, transition,signal):
 152                                 test = False
 153                                 break
 154                         cr.execute('select count(*) from wkf_witm_trans where trans_id=%d and inst_id=%d', (transition['id'], workitem['inst_id']))
 155                         if not cr.fetchone()[0]:
 156                                 transitions.append((transition['id'], workitem['inst_id']))
 157         if not test:
 158                 pass
 159         if test and len(transitions):
 160                 cr.executemany('insert into wkf_witm_trans (trans_id,inst_id) values (%d,%d)', transitions)
 161                 cr.execute('delete from wkf_workitem where id=%d', (workitem['id'],))
 162                 for t in transitions:
 163                         _join_test(cr, t[0], t[1], ident)
 164                 return True
 165         return False
 166
 167 def _join_test(cr, trans_id, inst_id, ident):
 168         cr.execute('select * from wkf_activity where id=(select act_to from wkf_transition where id=%d)', (trans_id,))
 169         activity = cr.dictfetchone()
 170         if activity['join_mode']=='XOR':
 171                 create(cr,[activity], inst_id, ident)
 172                 cr.execute('delete from wkf_witm_trans where inst_id=%d and trans_id=%d', (inst_id,trans_id))
 173         else:
 174                 cr.execute('select id from wkf_transition where act_to=%d', (activity['id'],))
 175                 trans_ids = cr.fetchall()
 176                 ok = True
 177                 for (id,) in trans_ids:
 178                         cr.execute('select count(*) from wkf_witm_trans where trans_id=%d and inst_id=%d', (id,inst_id))
 179                         res = cr.fetchone()[0]
 180                         if not res:
 181                                 ok = False
 182                                 break
 183                 if ok:
 184                         for (id,) in trans_ids:
 185                                 cr.execute('delete from wkf_witm_trans where trans_id=%d and inst_id=%d', (id,inst_id))
 186                         create(cr, [activity], inst_id, ident)