slapos_cloud: Use script to clean up code duplication arround memcache calls

Introduce this code in order to simplify the code and introduce some kind of reusable API.

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Base_getNewsDict.py

+import json
+from DateTime import DateTime
+
+memcached_dict = context.Base_getSlapToolMemcachedDict()
+try:
+  d = memcached_dict[document.getReference()]
+except (KeyError, TypeError):
+  d = {
+    "user": "SlapOS Master",
+    "text": "#error no data found for %s" % document.getReference(),
+    "no_data": 1
+  }
+else:
+  d = json.loads(d)
+  last_contact = DateTime(d.get('created_at'))
+  d["no_data_since_15_minutes"] = 0
+  d["no_data_since_5_minutes"] = 0
+  if (DateTime() - last_contact) > 0.005:
+    d["no_data_since_15_minutes"] = 1
+    d["no_data_since_5_minutes"] = 1
+  elif (DateTime() - last_contact) > 0.0025:
+    d["no_data_since_5_minutes"] = 1
+
+return d

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Base_getNewsDict.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>document</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>Base_getNewsDict</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Base_getSlapToolMemcacheDict.py

+from zExceptions import Unauthorized
+if REQUEST is not None:
+  raise Unauthorized
+
+return context.getPortalObject().portal_memcached.getMemcachedDict(
+  key_prefix='slap_tool',
+  plugin_path='portal_memcached/default_memcached_plugin')

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Base_getSlapToolMemcacheDict.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>REQUEST=None</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>Base_getSlapToolMemcacheDict</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/ComputerPartition_getLastestContactedDate.py

 from DateTime import DateTime
-portal = context.getPortalObject()
 import json
 
 partition = context
-memcached_dict = context.getPortalObject().portal_memcached.getMemcachedDict(
-  key_prefix='slap_tool',
-  plugin_path='portal_memcached/default_memcached_plugin')
+memcached_dict = context.Base_getSlapToolMemcacheDict()
 
 result = ""
 date = None

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Computer_checkAndUpdateCapacityScope.py

@@ -22,9 +22,7 @@ comment = ''
 
 if can_allocate:
   # Check if computer has error reported
-  memcached_dict = portal.portal_memcached.getMemcachedDict(
-    key_prefix='slap_tool',
-    plugin_path='portal_memcached/default_memcached_plugin')
+  memcached_dict = context.Base_getSlapToolMemcacheDict()
   try:
     d = memcached_dict[computer.getReference()]
   except KeyError:

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/Computer_getLastContactDate.py

 from DateTime import DateTime
 import json
 
-memcached_dict = context.getPortalObject().portal_memcached.getMemcachedDict(
-  key_prefix='slap_tool',
-  plugin_path='portal_memcached/default_memcached_plugin')
-
+memcached_dict = context.Base_getSlapToolMemcacheDict()
 try:
   d = memcached_dict[context.getReference()]
 except KeyError:

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/SoftwareInstance_getCurrentStatus.py

@@ -5,9 +5,7 @@ has_partition = context.getAggregate(portal_type="Computer Partition")
 result = 'Unable to calculate the status...'
 if has_partition:
   try:
-    memcached_dict = context.getPortalObject().portal_memcached.getMemcachedDict(
-      key_prefix='slap_tool',
-      plugin_path='portal_memcached/default_memcached_plugin')
+    memcached_dict = context.Base_getSlapToolMemcacheDict()
     try:
       d = memcached_dict[context.getReference()]
     except KeyError:

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/SoftwareRelease_getCurrentInstallationStateAsHtml.py

@@ -2,10 +2,6 @@ from DateTime import DateTime
 portal = context.getPortalObject()
 import json
 
-memcached_dict = context.getPortalObject().portal_memcached.getMemcachedDict(
-  key_prefix='slap_tool',
-  plugin_path='portal_memcached/default_memcached_plugin')
-
 error_style = 'background-color: red; display: block; height: 2em; width: 2em; float: left; margin: 5px;'
 access_style = 'background-color: green; display: block; height: 2em; width: 2em; float: left; margin: 5px;'
 
@@ -18,6 +14,7 @@ software_installation = portal.portal_catalog.getResultValue(
 if not software_installation or software_installation.getSlapState() == "destroy_requested":
   return '<span" style="%s" title="Information not available"></a>' % error_style
 
+memcached_dict = context.Base_getSlapToolMemcacheDict()
 try:
   d = memcached_dict[software_installation.getReference()]
 except KeyError: