simulation: solve random solving issues in a cluster environment

Before, when solving a solver, parsing sub objects of solver_process was done directly synchronously
in solver_workflow. And we had the case where you have parallel transactions solving a solver,
each of theses transactions see remaining solver not in solved state, but once all transaction are
finished, all solver are solved. This could lead to the case where solver_process is never moved
to succeeded. Instead of using serialize (which may lead to conflicts), just use activities in queue
with a serialization tag.

bt5/erp5_base/WorkflowTemplateItem/portal_workflow/solver_workflow/scripts/SolverProcess_succeed.py

 solver_process = state_change['object'].getParentValue()
-for solver in solver_process.objectValues(
-    portal_type=solver_process.getPortalObject().getPortalTargetSolverTypeList()):
-  if solver.getValidationState() != 'solved':
-    return
-solver_process.succeed()
+# Before parsing sub objects was done directly here. And we had the
+# case where you have parallel transactions solving a solver,
+# each of theses transactions see remaining solver not in solved state,
+# but once all transaction are finished, all solver are solved. This
+# could lead to the case where solver_process is never moved to succeeded
+# Instead of using serialize (which may lead to conflicts), just use
+# activities in queue.
+solver_process.activate(serialization_tag=solver_process.getRelativeUrl()
+                        ).SolverProcess_tryToSucceed()

bt5/erp5_simulation/SkinTemplateItem/portal_skins/erp5_simulation/SolverProcess_tryToSucceed.py

+solver_process = context
+for solver in solver_process.objectValues(
+    portal_type=solver_process.getPortalObject().getPortalTargetSolverTypeList()):
+  if solver.getValidationState() != 'solved':
+    break
+else:
+  portal = context.getPortalObject()
+  if portal.portal_workflow.isTransitionPossible(solver_process, 'succeed'):
+    solver_process.succeed()

bt5/erp5_simulation/SkinTemplateItem/portal_skins/erp5_simulation/SolverProcess_tryToSucceed.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>Script_magic</string> </key>
+            <value> <int>3</int> </value>
+        </item>
+        <item>
+            <key> <string>_bind_names</string> </key>
+            <value>
+              <object>
+                <klass>
+                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
+                </klass>
+                <tuple/>
+                <state>
+                  <dictionary>
+                    <item>
+                        <key> <string>_asgns</string> </key>
+                        <value>
+                          <dictionary>
+                            <item>
+                                <key> <string>name_container</string> </key>
+                                <value> <string>container</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_context</string> </key>
+                                <value> <string>context</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_m_self</string> </key>
+                                <value> <string>script</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_subpath</string> </key>
+                                <value> <string>traverse_subpath</string> </value>
+                            </item>
+                          </dictionary>
+                        </value>
+                    </item>
+                  </dictionary>
+                </state>
+              </object>
+            </value>
+        </item>
+        <item>
+            <key> <string>_params</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>_proxy_roles</string> </key>
+            <value>
+              <tuple>
+                <string>Manager</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>SolverProcess_tryToSucceed</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>