erp5_scalability_data: add load balancing hack feature based on zope port number

apply_load_balancing_scalability script is added to portal_skins/custom, in order
to perform load balancing. the script is based on zope port number to determine
on wich group each node have to be moved.

bt5/erp5_scalability_data/PathTemplateItem/portal_skins/custom/apply_load_balancing_scalability.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>_body</string> </key>
+            <value> <string encoding="cdata"><![CDATA[
+
+import json\n
+portal_actitivities = context.getPortalObject().portal_activities\n
+\n
+distribution_node = \'\'\n
+processing_nodes = []\n
+idle_nodes = []\n
+\n
+# Store each node to distribution, processing or idle group\n
+# in function of his port number.\n
+node_list = portal_actitivities.getNodeList()\n
+for node in node_list:\n
+  port = int(node.split(":")[1])\n
+  # Node with port >= 2300 are processing nodes, others are idle nodes\n
+  if port >= 2300:\n
+    processing_nodes.append(node)\n
+  else:\n
+    idle_nodes.append(node)\n
+\n
+  # Special port for distribution\n
+  if port == 2350 or port == 2250:\n
+    distribution_node = node\n
+\n
+# Change distribution node\n
+portal_actitivities.manage_setDistributingNode(distribution_node)\n
+# Add processing nodes\n
+for node in processing_nodes:\n
+  portal_actitivities.manage_addToProcessingList((node,))\n
+# Remove idle nodes from processing nodes\n
+for node in idle_nodes:\n
+  portal_actitivities.manage_removeFromProcessingList((node,))\n
+\n
+print \'Distributing Node:\'\n
+print json.dumps(portal_actitivities.getDistributingNode())\n
+print \'Processing Nodes:\'\n
+print json.dumps(portal_actitivities.getProcessingNodeList())\n
+\n
+return printed\n
+
+
+]]></string> </value>
+        </item>
+        <item>
+            <key> <string>_params</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>apply_load_balancing_scalability</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

bt5/erp5_scalability_data/bt/revision

-15
+16
\ No newline at end of file

bt5/erp5_scalability_data/bt/template_keep_path_list

 portal_preferences/scalability_preference
 portal_skins/custom/init_scalability
 portal_skins/custom/update_roles_scalability
+portal_skins/custom/apply_load_balancing_scalability
 organisation_module/idexen
 organisation_module/idexen/**
 person_module/scalability_user

bt5/erp5_scalability_data/bt/template_path_list

@@ -9,6 +9,7 @@ person_module/john_rock/*
 person_module/scalability_user
 person_module/scalability_user/*
 portal_preferences/scalability_preference
+portal_skins/custom/apply_load_balancing_scalability
 portal_skins/custom/init_scalability
 portal_skins/custom/update_roles_scalability
 product_module/blue_led