aci_vlan_pool: Module to manage VLAN pools (#34650)

* aci_vlan_pool: Module to manage VLAN pools

This is a simplified version of the aci_encap_pool module.

* Add integration tests, based on aci_encap_pool

lib/ansible/modules/network/aci/aci_vlan_pool.py

@@ -0,0 +1,160 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Copyright: (c) 2017, Jacob McGill (@jmcgill298)
+# Copyright: (c) 2018, Dag Wieers (@dagwieers) <dag@wieers.com>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
+ANSIBLE_METADATA = {'metadata_version': '1.1',
+                    'status': ['preview'],
+                    'supported_by': 'community'}
+
+DOCUMENTATION = r'''
+---
+module: aci_vlan_pool
+short_description: Manage VLAN pools on Cisco ACI fabrics (fvns:VlanInstP)
+description:
+- Manage VLAN pools on Cisco ACI fabrics.
+- More information from the internal APIC class I(fvns:VlanInstP) at
+  U(https://developer.cisco.com/site/aci/docs/apis/apic-mim-ref/).
+author:
+- Jacob McGill (@jmcgill298)
+- Dag Wieers (@dagwieers)
+version_added: '2.5'
+options:
+  allocation_mode:
+    description:
+    - The method used for allocating VLANs to resources.
+    aliases: [ mode ]
+    choices: [ dynamic, static]
+  description:
+    description:
+    - Description for the C(pool).
+    aliases: [ descr ]
+  pool:
+    description:
+    - The name of the pool.
+    aliases: [ name, pool_name ]
+  state:
+    description:
+    - Use C(present) or C(absent) for adding or removing.
+    - Use C(query) for listing an object or multiple objects.
+    choices: [ absent, present, query ]
+    default: present
+extends_documentation_fragment: aci
+'''
+
+EXAMPLES = r'''
+- name: Add a new VLAN pool
+  aci_vlan_pool:
+    hostname: apic
+    username: admin
+    password: SomeSecretPassword
+    pool: production
+    description: Production VLANs
+    state: present
+
+- name: Remove a VLAN pool
+  aci_vlan_pool:
+    hostname: apic
+    username: admin
+    password: SomeSecretPassword
+    pool: production
+    state: absent
+
+- name: Query a VLAN pool
+  aci_vlan_pool:
+    hostname: apic
+    username: admin
+    password: SomeSecretPassword
+    pool: production
+    state: query
+
+- name: Query all VLAN pools
+  aci_vlan_pool:
+    hostname: apic
+    username: admin
+    password: SomeSecretPassword
+    state: query
+'''
+
+RETURN = r'''
+#
+'''
+
+from ansible.module_utils.network.aci.aci import ACIModule, aci_argument_spec
+from ansible.module_utils.basic import AnsibleModule
+
+
+def main():
+    argument_spec = aci_argument_spec
+    argument_spec.update(
+        allocation_mode=dict(type='str', aliases=['mode'], choices=['dynamic', 'static']),
+        description=dict(type='str', aliases=['descr']),
+        pool=dict(type='str', aliases=['name', 'pool_name']),
+        state=dict(type='str', default='present', choices=['absent', 'present', 'query']),
+    )
+
+    module = AnsibleModule(
+        argument_spec=argument_spec,
+        supports_check_mode=True,
+        required_if=[
+            ['state', 'absent', ['pool']],
+            ['state', 'present', ['pool']],
+        ],
+    )
+
+    allocation_mode = module.params['allocation_mode']
+    description = module.params['description']
+    pool = module.params['pool']
+    state = module.params['state']
+
+    pool_name = pool
+
+    # ACI Pool URL requires the allocation mode for vlan and vsan pools (ex: uni/infra/vlanns-[poolname]-static)
+    if pool is not None:
+        if allocation_mode is not None:
+            pool_name = '[{0}]-{1}'.format(pool, allocation_mode)
+        else:
+            module.fail_json(msg="ACI requires the 'allocation_mode' when 'pool' is provided")
+
+    aci = ACIModule(module)
+    aci.construct_url(
+        root_class=dict(
+            aci_class='fvnsVlanInstP',
+            aci_rn='infra/vlanns-{0}'.format(pool_name),
+            filter_target='eq(fvnsVlanInstP.name, "{0}")'.format(pool),
+            module_object=pool,
+        ),
+    )
+
+    aci.get_existing()
+
+    if state == 'present':
+        # Filter out module parameters with null values
+        aci.payload(
+            aci_class='fvnsVlanInstP',
+            class_config=dict(
+                allocMode=allocation_mode,
+                descr=description,
+                name=pool,
+            )
+        )
+
+        # Generate config diff which will be used as POST request body
+        aci.get_diff(aci_class='fvnsVlanInstP')
+
+        # Submit changes if module not in check_mode and the proposed is different than existing
+        aci.post_config()
+
+    elif state == 'absent':
+        aci.delete_config()
+
+    module.exit_json(**aci.result)
+
+
+if __name__ == "__main__":
+    main()