Getting pacemaker node attribures and node status as dict.

def get_pacemaker_nodes_attributes(cibadmin_status_xml)
Adding possibility to parse 'cibadmin --query --scope status'.
Function return nested dictionary with node-fqdn and attribute name as keys.

def get_pcs_nodes(pcs_status_xml)
Adding possibility to parse 'pcs status xml'.
and return nested dictionary with node-fqdn and attribute name as keys.
They will be used in test for pacemaker resources when disk is full

Change-Id: Ieabef9eca1eff79ac504ae6df1e1a1409ed276ff
Closes-Bug: #1507721
Related-Bug: #1500446

doc/helpers.rst

@@ -78,6 +78,11 @@ Ovs helper
 .. automodule:: fuelweb_test.helpers.ovs
    :members:
 
+Pacemaker
+---------
+.. automodule:: fuelweb_test.helpers.pacemaker
+   :members:
+
 Patching
 --------
 .. automodule:: fuelweb_test.helpers.patching

fuelweb_test/helpers/pacemaker.py

@@ -0,0 +1,96 @@
+#    Copyright 2015 Mirantis, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+from xml import etree
+
+
+def get_pacemaker_nodes_attributes(cibadmin_status_xml):
+    """Parse 'cibadmin --query --scope status'.
+    :param cibadmin_status_xml: stdout from 'cibadmin --query --scope status'
+    :return: nested dictionary with node-fqdn and attribute name as keys
+    """
+
+    """ Get cibadmin_status to a python dict:
+        return:
+            {
+              fqdn: {
+                'arch':
+                'cpu_cores':
+                'cpu_info':
+                'cpu_load':
+                'cpu_speed':
+                'free_swap':
+                'gtidd':
+                'master-p_conntrackd':
+                'master-p_rabbitmq-server':
+                'os':
+                '#health_disk':        # only on master if root_free < 100M
+                'pingd':
+                'rabbit-master':       # only on master
+                'rabbit-start-time':
+                'rabbit_get_alarms_timeouts':
+                'rabbit_list_channels_timeouts':
+                'ram_free':
+                'ram_total':
+                'root_free':
+                'var_lib_glance_free':
+                'var_lib_mysql_free':
+                'var_log_free':
+              },
+              ...
+            }
+    """
+    root = etree.fromstring(cibadmin_status_xml)
+    nodes = {}
+    for node_state in root.iter('node_state'):
+        node_name = node_state.get('uname')
+        nodes[node_name] = {}
+        for instance_attribute in node_state.iter('nvpair'):
+            nodes[node_name][instance_attribute.get(
+                'name')] = instance_attribute.get('value')
+    return nodes
+
+
+def get_pcs_nodes(pcs_status_xml):
+    """Parse 'pcs status xml'. <Nodes> section
+    :param pcs_status_xml: stdout from 'pcs status xml'
+    :return: nested dictionary with node-fqdn and attribute name as keys
+    """
+    """ Get crm node attributes to a python dict:
+        return:
+            {
+              fqdn: {
+                'node name':
+                'id':
+                'online':
+                'standby':
+                'standby_on_fail':
+                'maintenance':
+                'pending':
+                'unclean':
+                'shutdown':
+                'expected_up':
+                'is_dc':
+                'resources_running':
+                'type':
+              },
+              ...
+            }
+    """
+
+    root = etree.fromstring(pcs_status_xml)
+    nodes = {}
+    for nodes_group in root.iter('nodes'):
+        for node in nodes_group:
+            nodes[node.get('name')] = node.attrib
+    return nodes