CMFActivity: Allow optional signature parameter

product/CMFActivity/Activity/Queue.py

@@ -83,6 +83,12 @@ class Queue(object):
   def initialize(self, activity_tool, clear):
     pass
 
+  def register(self, activity_buffer, activity_tool, message):
+    pass
+
+  def activateResult(self, active_process, result, signature=None):
+    pass
+
   def deleteMessage(self, activity_tool, m):
     if not getattr(m, 'is_deleted', 0):
       # We try not to delete twice

product/CMFActivity/Activity/SQLJoblib.py

@@ -81,6 +81,7 @@ class SQLJoblib(SQLDict):
     """
     assert not message.is_registered, message
     message.is_registered = True
+    if not 'signature' in message.activity_kw:
       message.activity_kw['signature'] = sqljoblib_hash(message.args)
     if activity_buffer.activity_tool is None:
       self.activity_tool = activity_tool

product/CMFActivity/tests/testCMFActivity.py

@@ -2112,11 +2112,11 @@ class TestCMFActivity(ERP5TypeTestCase, LogInterceptor):
     try:
       # Adds two same activities.
       activity_tool.activate(activity='SQLJoblib', after_tag='foo', priority=2,
-        tag='a', signature=555666).doSomething(other_tag='a')
+        tag='a').doSomething(other_tag='a')
       self.commit()
       uid1, = [x.uid for x in activity_tool.getMessageList()]
       activity_tool.activate(activity='SQLJoblib', after_tag='bar', priority=1,
-        tag='a', signature=555666).doSomething(other_tag='a')
+        tag='a').doSomething(other_tag='a')
       self.commit()
       self.assertEqual(len(activity_tool.getMessageList()), 2)
       activity_tool.distribute()