Addng nxos_feature

network/nxos/nxos_feature.py

@@ -0,0 +1,270 @@
+#!/usr/bin/python
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+DOCUMENTATION = '''
+---
+module: nxos_feature
+version_added: "2.1"
+short_description: Manage features in NX-OS switches
+description:
+    - Offers ability to enable and disable features in NX-OS
+extends_documentation_fragment: nxos
+author: Jason Edelman (@jedelman8), Gabriele Gerbino (@GGabriele)
+options:
+    feature:
+        description:
+            - Name of feature
+        required: true
+    state:
+        description:
+            - Desired state of the feature
+        required: false
+        default: 'enabled'
+        choices: ['enabled','disabled']
+'''
+
+EXAMPLES = '''
+# Ensure lacp is enabled
+- nxos_feature: feature=lacp state=enabled host={{ inventory_hostname }}
+# Ensure ospf is disabled
+- nxos_feature: feature=ospf state=disabled host={{ inventory_hostname }}
+# Ensure vpc is enabled
+- nxos_feature: feature=vpc state=enabled host={{ inventory_hostname }}
+'''
+
+RETURN = '''
+proposed:
+    description: proposed feature state
+    returned: always
+    type: dict
+    sample: {"state": "disabled"}
+existing:
+    description: existing state of feature
+    returned: always
+    type: dict
+    sample: {"state": "enabled"}
+end_state:
+    description: feature state after executing module
+    returned: always
+    type: dict
+    sample: {"state": "disabled"}
+state:
+    description: state as sent in from the playbook
+    returned: always
+    type: string
+    sample: "disabled"
+commands:
+    description: command string sent to the device
+    returned: always
+    type: string
+    sample: "no feature eigrp ;"
+changed:
+    description: check to see if a change was made on the device
+    returned: always
+    type: boolean
+    sample: true
+feature:
+    description: the feature that has been examined
+    returned: always
+    type: string
+    sample: "vpc"
+'''
+
+
+def execute_config_command(commands, module):
+    try:
+        module.configure(commands)
+    except ShellError, clie:
+        module.fail_json(msg='Error sending CLI commands',
+                         error=str(clie), commands=commands)
+
+
+def get_cli_body_ssh(command, response):
+    """Get response for when transport=cli.  This is kind of a hack and mainly
+    needed because these modules were originally written for NX-API.  And
+    not every command supports "| json" when using cli/ssh.  As such, we assume
+    if | json returns an XML string, it is a valid command, but that the
+    resource doesn't exist yet.
+    """
+    if 'xml' in response[0]:
+        body = []
+    else:
+        try:
+            body = [json.loads(response[0])]
+        except ValueError:
+            module.fail_json(msg='Command does not support JSON output',
+                             command=command)
+    return body
+
+
+def execute_show(cmds, module, command_type=None):
+    try:
+        response = module.execute(cmds,
+            command_type=command_type) if command_type else module.execute(cmds)
+    except ShellError, clie:
+        module.fail_json(msg='Error sending {0}'.format(cmds),
+                         error=str(clie))
+    return response
+
+
+def execute_show_command(command, module, command_type='cli_show'):
+    if module.params['transport'] == 'cli':
+        command += ' | json'
+        cmds = [command]
+        response = execute_show(cmds, module)
+        body = get_cli_body_ssh(command, response)
+    elif module.params['transport'] == 'nxapi':
+        cmds = [command]
+        body = execute_show(cmds, module, command_type=command_type)
+
+    return body
+
+
+def apply_key_map(key_map, table):
+    new_dict = {}
+    for key, value in table.items():
+        new_key = key_map.get(key)
+        if new_key:
+            value = table.get(key)
+            if value:
+                new_dict[new_key] = str(value)
+            else:
+                new_dict[new_key] = value
+    return new_dict
+
+
+def get_available_features(feature, module):
+    available_features = {}
+    command = 'show feature'
+    body = execute_show_command(command, module)
+
+    try:
+        body = body[0]['TABLE_cfcFeatureCtrlTable']['ROW_cfcFeatureCtrlTable']
+    except (TypeError, IndexError):
+        return available_features
+
+    for each_feature in body:
+        feature = each_feature['cfcFeatureCtrlName2']
+        state = each_feature['cfcFeatureCtrlOpStatus2']
+
+        if 'enabled' in state:
+            state = 'enabled'
+
+        if feature not in available_features.keys():
+            available_features[feature] = state
+        else:
+            if (available_features[feature] == 'disabled' and
+                    state == 'enabled'):
+                available_features[feature] = state
+
+    return available_features
+
+
+def get_commands(proposed, existing, state, module):
+    feature = validate_feature(module, mode='config')
+
+    commands = []
+    feature_check = proposed == existing
+    if not feature_check:
+        if state == 'enabled':
+            command = 'feature {0}'.format(feature)
+            commands.append(command)
+        elif state == 'disabled':
+            command = "no feature {0}".format(feature)
+            commands.append(command)
+    return commands
+
+
+def validate_feature(module, mode='show'):
+    '''Some features may need to be mapped due to inconsistency
+    between how they appear from "show feature" output and
+    how they are configured'''
+
+    feature = module.params['feature']
+
+    feature_to_be_mapped = {
+        'show': {
+                'nv overlay': 'nve'},
+        'config':
+                {
+                'nve': 'nv overlay'}
+        }
+
+    if feature in feature_to_be_mapped[mode]:
+        feature = feature_to_be_mapped[mode][feature]
+
+    return feature
+
+
+def main():
+    argument_spec = dict(
+            feature=dict(type='str', required=True),
+            state=dict(choices=['enabled', 'disabled'], default='enabled',
+                       required=False),
+    )
+    module = get_module(argument_spec=argument_spec,
+                        supports_check_mode=True)
+
+    feature = validate_feature(module)
+    state = module.params['state'].lower()
+
+    available_features = get_available_features(feature, module)
+    if feature not in available_features.keys():
+        module.fail_json(
+            msg='Invalid feature name.',
+            features_currently_supported=available_features,
+            invalid_feature=feature)
+    else:
+        existstate = available_features[feature]
+
+        existing = dict(state=existstate)
+        proposed = dict(state=state)
+        changed = False
+        end_state = existing
+
+        cmds = get_commands(proposed, existing, state, module)
+
+        if cmds:
+            if module.check_mode:
+                module.exit_json(changed=True, commands=cmds)
+            else:
+                execute_config_command(cmds, module)
+                changed = True
+                updated_features = get_available_features(feature, module)
+                existstate = updated_features[feature]
+                end_state = dict(state=existstate)
+
+    results = {}
+    results['proposed'] = proposed
+    results['existing'] = existing
+    results['end_state'] = end_state
+    results['state'] = state
+    results['updates'] = cmds
+    results['changed'] = changed
+    results['feature'] = module.params['feature']
+
+    module.exit_json(**results)
+
+
+from ansible.module_utils.basic import *
+from ansible.module_utils.urls import *
+from ansible.module_utils.shell import *
+from ansible.module_utils.netcfg import *
+from ansible.module_utils.nxos import *
+if __name__ == '__main__':
+    main()