Add support for preferred arrays to host configuration (purefa_host) (#59735)

changelogs/fragments/59735-add-preferred-arrays-support.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - Add I(preferred_arrays) param to enable preferred arrays to be set in a host configuration. (https://github.com/ansible/ansible/pull/59735)

lib/ansible/modules/storage/purestorage/purefa_host.py

@@ -73,6 +73,12 @@ options:
     default: ''
     choices: ['hpux', 'vms', 'aix', 'esxi', 'solaris', 'hitachi-vsp', 'oracle-vm-server', 'delete', '']
     version_added: '2.7'
+  preferred_array:
+    type: list
+    description:
+    - List of preferred arrays in an ActiveCluster environment.
+    - To remove existing preferred arrays from the host, specify I(delete).
+    version_added: '2.9'
 extends_documentation_fragment:
 - purestorage.fa
 '''
@@ -141,6 +147,22 @@ EXAMPLES = r'''
     lun: 12
     fa_url: 10.10.10.2
     api_token: e31060a7-21fc-e277-6240-25983c6c4592
+
+- name: Add preferred arrays to host foo
+  purefa_host:
+    host: foo
+    preferred_array:
+    - array1
+    - array2
+    fa_url: 10.10.10.2
+    api_token: e31060a7-21fc-e277-6240-25983c6c4592
+
+- name: Delete preferred arrays from host foo
+  purefa_host:
+    host: foo
+    preferred_array: delete
+    fa_url: 10.10.10.2
+    api_token: e31060a7-21fc-e277-6240-25983c6c4592
 '''
 
 RETURN = r'''
@@ -151,16 +173,10 @@ from ansible.module_utils.pure import get_system, purefa_argument_spec
 
 
 AC_REQUIRED_API_VERSION = '1.14'
+PREFERRED_ARRAY_API_VERSION = '1.15'
 NVME_API_VERSION = '1.16'
 
 
-try:
-    from purestorage import purestorage
-    HAS_PURESTORAGE = True
-except ImportError:
-    HAS_PURESTORAGE = False
-
-
 def _set_host_initiators(module, array):
     """Set host initiators."""
     if module.params['protocol'] in ['nvme', 'mixed']:
@@ -249,6 +265,15 @@ def _set_host_personality(module, array):
         array.set_host(module.params['host'], personality='')
 
 
+def _set_preferred_array(module, array):
+    """Set preferred array list. Only called when supported"""
+    if module.params['preferred_array'] != ['delete']:
+        array.set_host(module.params['host'],
+                       preferred_array=module.params['preferred_array'])
+    else:
+        array.set_host(module.params['host'], personality='')
+
+
 def _update_host_personality(module, array, answer=False):
     """Change host personality. Only called when supported"""
     personality = array.get_host(module.params['host'], personality=True)['personality']
@@ -276,6 +301,33 @@ def _update_host_personality(module, array, answer=False):
     return answer
 
 
+def _update_preferred_array(module, array, answer=False):
+    """Update existing preferred array list. Only called when supported"""
+    preferred_array = array.get_host(module.params['host'], preferred_array=True)['preferred_array']
+    if preferred_array == [] and module.params['preferred_array'] != ['delete']:
+        try:
+            array.set_host(module.params['host'],
+                           preferred_array=module.params['preferred_array'])
+            answer = True
+        except Exception:
+            module.fail_json(msg='Preferred array list creation failed for {0}.'.format(module.params['host']))
+    elif preferred_array != []:
+        if module.params['preferred_array'] == ['delete']:
+            try:
+                array.set_host(module.params['host'], preferred_array=[])
+                answer = True
+            except Exception:
+                module.fail_json(msg='Preferred array list deletion failed for {0}.'.format(module.params['host']))
+        elif preferred_array != module.params['preferred_array']:
+            try:
+                array.set_host(module.params['host'],
+                               preferred_array=module.params['preferred_array'])
+                answer = True
+            except Exception:
+                module.fail_json(msg='Preferred array list change failed for {0}.'.format(module.params['host']))
+    return answer
+
+
 def get_host(module, array):
     host = None
     for hst in array.list_hosts():
@@ -286,10 +338,10 @@ def get_host(module, array):
 
 
 def make_host(module, array):
-    changed = False
+    changed = True
+    if not module.check_mode:
         try:
             array.create_host(module.params['host'])
-        changed = True
         except Exception:
             module.fail_json(msg='Host {0} creation failed.'.format(module.params['host']))
         try:
@@ -297,6 +349,8 @@ def make_host(module, array):
             api_version = array._list_available_rest_versions()
             if AC_REQUIRED_API_VERSION in api_version and module.params['personality']:
                 _set_host_personality(module, array)
+            if PREFERRED_ARRAY_API_VERSION in api_version and module.params['preferred_array']:
+                _set_preferred_array(module, array)
             if module.params['volume']:
                 if module.params['lun']:
                     array.connect_host(module.params['host'],
@@ -310,7 +364,8 @@ def make_host(module, array):
 
 
 def update_host(module, array):
-    changed = False
+    changed = True
+    if not module.check_mode:
         volumes = array.list_host_connections(module.params['host'])
         if module.params['iqn'] or module.params['wwns'] or module.params['nqn']:
             changed = _update_host_initiators(module, array)
@@ -322,16 +377,19 @@ def update_host(module, array):
         if AC_REQUIRED_API_VERSION in api_version:
             if module.params['personality']:
                 changed = _update_host_personality(module, array)
+        if PREFERRED_ARRAY_API_VERSION in api_version:
+            if module.params['preferred_array']:
+                changed = _update_preferred_array(module, array)
     module.exit_json(changed=changed)
 
 
 def delete_host(module, array):
-    changed = False
+    changed = True
+    if not module.check_mode:
         try:
             for vol in array.list_host_connections(module.params['host']):
                 array.disconnect_host(module.params['host'], vol["vol"])
             array.delete_host(module.params['host'])
-        changed = True
         except Exception:
             module.fail_json(msg='Host {0} deletion failed'.format(module.params['host']))
     module.exit_json(changed=changed)
@@ -351,12 +409,10 @@ def main():
         personality=dict(type='str', default='',
                          choices=['hpux', 'vms', 'aix', 'esxi', 'solaris',
                                   'hitachi-vsp', 'oracle-vm-server', 'delete', '']),
+        preferred_array=dict(type='list'),
     ))
 
-    module = AnsibleModule(argument_spec, supports_check_mode=False)
+    module = AnsibleModule(argument_spec, supports_check_mode=True)
-
-    if not HAS_PURESTORAGE:
-        module.fail_json(msg='purestorage sdk is required for this module in host')
 
     array = get_system(module)
     api_version = array._list_available_rest_versions()
@@ -371,6 +427,21 @@ def main():
             array.get_volume(module.params['volume'])
         except Exception:
             module.fail_json(msg='Volume {0} not found'.format(module.params['volume']))
+    if module.params['preferred_array']:
+        try:
+            if module.params['preferred_array'] != ['delete']:
+                all_connected_arrays = array.list_array_connections()
+                if not all_connected_arrays:
+                    module.fail_json(msg='No target arrays connected to source array. Setting preferred arrays not possible.')
+                else:
+                    current_arrays = []
+                    for current_array in range(0, len(all_connected_arrays)):
+                        current_arrays.append(all_connected_arrays[current_array]['array_name'])
+                for array_to_connect in range(0, len(module.params['preferred_array'])):
+                    if module.params['preferred_array'][array_to_connect] not in current_arrays:
+                        module.fail_json(msg='Array {0} not in existing array connections.'.format(module.params['preferred_array'][array_to_connect]))
+        except Exception:
+            module.fail_json(msg='Failed to get existing array connections.')
 
     if host is None and state == 'present':
         make_host(module, array)