Pass target_raid_config field to ironic variable

In order to create/delete RAID configuration via the Ansible driver
we should be able to retrieve the JSON target_raid_config data from
the node.

Change-Id: Ie1bbefbc438a6c7f4592ea96ff84d2d5eb2d412d
Story: 2006417
Task: 36307

doc/source/admin/drivers/ansible.rst

@@ -362,6 +362,7 @@ Those values are then accessible in your plays as well
        preserve_ephemeral: "<bool>"
        ephemeral_format: "<FILESYSTEM TO CREATE ON EPHEMERAL PARTITION>"
        partitions: "<LIST OF PARTITIONS IN FORMAT EXPECTED BY PARTED MODULE>"
+     raid_config: "<COPY OF NODE's TARGET_RAID_CONFIG FIELD>"
 
 
 ``ironic.nodes``
@@ -434,6 +435,10 @@ Those values are then accessible in your plays as well
     Optional. Taken from the ``instance_info``, it specifies if the ephemeral
     partition must be preserved or rebuilt. Defaults to ``no``.
 
+``ironic.raid_config``
+    Taken from the ``target_raid_config`` if not empty, it specifies the RAID
+    configuration to apply.
+
 As usual for Ansible playbooks, you also have access to standard
 Ansible facts discovered by ``setup`` module.
 

ironic/drivers/modules/ansible/deploy.py

@@ -428,8 +428,10 @@ class AnsibleDeploy(agent_base.HeartbeatMixin, base.DeployInterface):
                   {'node': node.uuid, 'ip': node_address})
         variables = _prepare_variables(task)
         if not node.driver_internal_info.get('is_whole_disk_image'):
-            variables.update(_parse_partitioning_info(task.node))
-        playbook, user, key = _parse_ansible_driver_info(task.node)
+            variables.update(_parse_partitioning_info(node))
+        if node.target_raid_config:
+            variables.update({'raid_config': node.target_raid_config})
+        playbook, user, key = _parse_ansible_driver_info(node)
         node_list = [(node.uuid, node_address, user, node.extra)]
         extra_vars = _prepare_extra_vars(node_list, variables=variables)
 
@@ -535,11 +537,18 @@ class AnsibleDeploy(agent_base.HeartbeatMixin, base.DeployInterface):
         node_address = _get_node_ip(task)
 
         node_list = [(node.uuid, node_address, user, node.extra)]
-        extra_vars = _prepare_extra_vars(node_list)
+
+        if node.target_raid_config:
+            variables = {'raid_config': node.target_raid_config}
+            extra_vars = _prepare_extra_vars(node_list, variables=variables)
+        else:
+            extra_vars = _prepare_extra_vars(node_list)
 
         LOG.debug('Starting cleaning step %(step)s on node %(node)s',
                   {'node': node.uuid, 'step': stepname})
         step_tags = step['args'].get('tags', [])
+        LOG.debug("Detected tags from cleaning step: %(tags)s",
+                  {'tags': step_tags})
         _run_playbook(node, playbook, extra_vars, key, tags=step_tags)
         LOG.info('Ansible completed cleaning step %(step)s '
                  'on node %(node)s.',

releasenotes/notes/add-target-raid-config-ansible-deploy-c9ae81d9d25c62fe.yaml

@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    Add ``target_raid_config`` data to ``ironic`` variable under
+    ``raid_config`` top-level key which will expose the RAID configuration
+    to the ``ansible`` driver.
+    See `story 2006417
+    <https://storyboard.openstack.org/#!/story/2006417>`__ for details.