From 29ea186bd77436e6a24ec369e8eb397735628a82 Mon Sep 17 00:00:00 2001 From: GGabriele Date: Thu, 15 Sep 2016 11:51:07 +0200 Subject: [PATCH] Adding nxos_udld --- lib/ansible/modules/network/nxos/nxos_udld.py | 502 ++++++++++++++++++ 1 file changed, 502 insertions(+) create mode 100644 lib/ansible/modules/network/nxos/nxos_udld.py diff --git a/lib/ansible/modules/network/nxos/nxos_udld.py b/lib/ansible/modules/network/nxos/nxos_udld.py new file mode 100644 index 00000000000..04f8373e234 --- /dev/null +++ b/lib/ansible/modules/network/nxos/nxos_udld.py @@ -0,0 +1,502 @@ +#!/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 . +# + +DOCUMENTATION = ''' +--- + +module: nxos_udld +version_added: "2.2" +short_description: Manages UDLD global configuration params. +description: + - Manages UDLD global configuration params. +extends_documentation_fragment: nxos +author: + - Jason Edelman (@jedelman8) +notes: + - When C(state=absent), it unconfigures existing setings C(msg_time) and set it + to its default value of 15. It is cleaner to always use C(state=present). + - Module will fail if the udld feature has not been previously enabled. +options: + aggressive: + description: + - Toggles aggressive mode. + required: false + default: null + choices: ['enabled','disabled'] + msg_time: + description: + - Message time in seconds for UDLD packets. + required: false + default: null + reset: + description: + - Ability to reset UDLD down interfaces. + required: false + default: null + choices: ['true','false'] + state: + description: + - Manage the state of the resource. + required: false + default: present + choices: ['present','absent'] + +''' +EXAMPLES = ''' +# ensure udld aggressive mode is globally disabled and se global message interval is 20 +- nxos_udld: + aggressive=disabled + msg_time=20 + host={{ inventory_hostname }} + username={{ un }} + password={{ pwd }} + +# Ensure agg mode is globally enabled and msg time is 15 +- nxos_udld: + aggressive=enabled + msg_time=15 + host={{ inventory_hostname }} + username={{ un }} + password={{ pwd }} +''' + +RETURN = ''' +proposed: + description: k/v pairs of parameters passed into module + returned: always + type: dict + sample: {"aggressive": "enabled", "msg_time": "40"} +existing: + description: + - k/v pairs of existing udld configuration + type: dict + sample: {"aggressive": "disabled", "msg_time": "15"} +end_state: + description: k/v pairs of udld configuration after module execution + returned: always + type: dict + sample: {"aggressive": "enabled", "msg_time": "40"} +updates: + description: command sent to the device + returned: always + type: list + sample: ["udld message-time 40", "udld aggressive"] +changed: + description: check to see if a change was made on the device + returned: always + type: boolean + sample: true +''' + + +import json + +# COMMON CODE FOR MIGRATION +import re + +from ansible.module_utils.basic import get_exception +from ansible.module_utils.netcfg import NetworkConfig, ConfigLine +from ansible.module_utils.shell import ShellError + +try: + from ansible.module_utils.nxos import get_module +except ImportError: + from ansible.module_utils.nxos import NetworkModule + + +def to_list(val): + if isinstance(val, (list, tuple)): + return list(val) + elif val is not None: + return [val] + else: + return list() + + +class CustomNetworkConfig(NetworkConfig): + + def expand_section(self, configobj, S=None): + if S is None: + S = list() + S.append(configobj) + for child in configobj.children: + if child in S: + continue + self.expand_section(child, S) + return S + + def get_object(self, path): + for item in self.items: + if item.text == path[-1]: + parents = [p.text for p in item.parents] + if parents == path[:-1]: + return item + + def to_block(self, section): + return '\n'.join([item.raw for item in section]) + + def get_section(self, path): + try: + section = self.get_section_objects(path) + return self.to_block(section) + except ValueError: + return list() + + def get_section_objects(self, path): + if not isinstance(path, list): + path = [path] + obj = self.get_object(path) + if not obj: + raise ValueError('path does not exist in config') + return self.expand_section(obj) + + + def add(self, lines, parents=None): + """Adds one or lines of configuration + """ + + ancestors = list() + offset = 0 + obj = None + + ## global config command + if not parents: + for line in to_list(lines): + item = ConfigLine(line) + item.raw = line + if item not in self.items: + self.items.append(item) + + else: + for index, p in enumerate(parents): + try: + i = index + 1 + obj = self.get_section_objects(parents[:i])[0] + ancestors.append(obj) + + except ValueError: + # add parent to config + offset = index * self.indent + obj = ConfigLine(p) + obj.raw = p.rjust(len(p) + offset) + if ancestors: + obj.parents = list(ancestors) + ancestors[-1].children.append(obj) + self.items.append(obj) + ancestors.append(obj) + + # add child objects + for line in to_list(lines): + # check if child already exists + for child in ancestors[-1].children: + if child.text == line: + break + else: + offset = len(parents) * self.indent + item = ConfigLine(line) + item.raw = line.rjust(len(line) + offset) + item.parents = ancestors + ancestors[-1].children.append(item) + self.items.append(item) + + +def get_network_module(**kwargs): + try: + return get_module(**kwargs) + except NameError: + return NetworkModule(**kwargs) + +def get_config(module, include_defaults=False): + config = module.params['config'] + if not config: + try: + config = module.get_config() + except AttributeError: + defaults = module.params['include_defaults'] + config = module.config.get_config(include_defaults=defaults) + return CustomNetworkConfig(indent=2, contents=config) + +def load_config(module, candidate): + config = get_config(module) + + commands = candidate.difference(config) + commands = [str(c).strip() for c in commands] + + save_config = module.params['save'] + + result = dict(changed=False) + + if commands: + if not module.check_mode: + try: + module.configure(commands) + except AttributeError: + module.config(commands) + + if save_config: + try: + module.config.save_config() + except AttributeError: + module.execute(['copy running-config startup-config']) + + result['changed'] = True + result['updates'] = commands + + return result +# END OF COMMON CODE + + +def execute_config_command(commands, module): + try: + module.configure(commands) + except ShellError: + clie = get_exception() + module.fail_json(msg='Error sending CLI commands', + error=str(clie), commands=commands) + except AttributeError: + try: + commands.insert(0, 'configure') + module.cli.add_commands(commands, output='config') + module.cli.run_commands() + except ShellError: + clie = get_exception() + module.fail_json(msg='Error sending CLI commands', + error=str(clie), commands=commands) + + +def get_cli_body_ssh(command, response, module): + """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. Instead, the output will be a raw string + when issuing commands containing 'show run'. + """ + if 'xml' in response[0] or response[0] == '\n': + body = [] + elif 'show run' in command: + body = response + else: + try: + if isinstance(response[0], str): + body = [json.loads(response[0])] + else: + body = response + except ValueError: + module.fail_json(msg='Command does not support JSON output', + command=command) + return body + + +def execute_show(cmds, module, command_type=None): + command_type_map = { + 'cli_show': 'json', + 'cli_show_ascii': 'text' + } + + try: + if command_type: + response = module.execute(cmds, command_type=command_type) + else: + response = module.execute(cmds) + except ShellError: + clie = get_exception() + module.fail_json(msg='Error sending {0}'.format(cmds), + error=str(clie)) + except AttributeError: + try: + if command_type: + command_type = command_type_map.get(command_type) + module.cli.add_commands(cmds, output=command_type) + response = module.cli.run_commands() + else: + module.cli.add_commands(cmds) + response = module.cli.run_commands() + except ShellError: + clie = get_exception() + 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': + if 'show run' not in command: + command += ' | json' + cmds = [command] + response = execute_show(cmds, module) + body = get_cli_body_ssh(command, response, module) + elif module.params['transport'] == 'nxapi': + cmds = [command] + body = execute_show(cmds, module, command_type=command_type) + + return body + + +def flatten_list(command_lists): + flat_command_list = [] + for command in command_lists: + if isinstance(command, list): + flat_command_list.extend(command) + else: + flat_command_list.append(command) + return flat_command_list + + +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_commands_config_udld_global(delta, reset): + config_args = { + 'enabled': 'udld aggressive', + 'disabled': 'no udld aggressive', + 'msg_time': 'udld message-time {msg_time}' + } + commands = [] + for param, value in delta.iteritems(): + if param == 'aggressive': + if value == 'enabled': + command = 'udld aggressive' + elif value == 'disabled': + command = 'no udld aggressive' + else: + command = config_args.get(param, 'DNE').format(**delta) + if command and command != 'DNE': + commands.append(command) + command = None + + if reset: + command = 'udld reset' + commands.append(command) + return commands + + +def get_commands_remove_udld_global(delta): + config_args = { + 'aggressive': 'no udld aggressive', + 'msg_time': 'no udld message-time {msg_time}', + } + commands = [] + for param, value in delta.iteritems(): + command = config_args.get(param, 'DNE').format(**delta) + if command and command != 'DNE': + commands.append(command) + command = None + return commands + + +def get_udld_global(module): + command = 'show udld global' + udld_table = execute_show_command(command, module)[0] + + status = str(udld_table.get('udld-global-mode', None)) + if status == 'enabled-aggressive': + aggressive = 'enabled' + else: + aggressive = 'disabled' + + interval = str(udld_table.get('message-interval', None)) + udld = dict(msg_time=interval, aggressive=aggressive) + + return udld + + +def main(): + argument_spec = dict( + aggressive=dict(required=False, choices=['enabled', 'disabled']), + msg_time=dict(required=False, type='str'), + reset=dict(required=False, type='bool'), + state=dict(choices=['absent', 'present'], default='present'), + ) + module = get_network_module(argument_spec=argument_spec, + required_one_of=[['aggressive', 'msg_time', 'reset']], + supports_check_mode=True) + + aggressive = module.params['aggressive'] + msg_time = module.params['msg_time'] + reset = module.params['reset'] + state = module.params['state'] + + if (aggressive or reset) and state == 'absent': + module.fail_json(msg="It's better to use state=present when " + "configuring or unconfiguring aggressive mode " + "or using reset flag. state=absent is just for " + "when using msg_time param.") + + if msg_time: + try: + msg_time_int = int(msg_time) + if msg_time_int < 7 or msg_time_int > 90: + raise ValueError + except ValueError: + module.fail_json(msg='msg_time must be an integer' + 'between 7 and 90') + + args = dict(aggressive=aggressive, msg_time=msg_time, reset=reset) + proposed = dict((k, v) for k, v in args.iteritems() if v is not None) + + existing = get_udld_global(module) + end_state = existing + + delta = set(proposed.iteritems()).difference(existing.iteritems()) + changed = False + + commands = [] + if state == 'present': + if delta: + command = get_commands_config_udld_global(dict(delta), reset) + commands.append(command) + + elif state == 'absent': + common = set(proposed.iteritems()).intersection(existing.iteritems()) + if common: + command = get_commands_remove_udld_global(dict(common)) + commands.append(command) + + cmds = flatten_list(commands) + if cmds: + if module.check_mode: + module.exit_json(changed=True, commands=cmds) + else: + changed = True + execute_config_command(cmds, module) + end_state = get_udld_global(module) + + results = {} + results['proposed'] = proposed + results['existing'] = existing + results['end_state'] = end_state + results['updates'] = cmds + results['changed'] = changed + + module.exit_json(**results) + + +if __name__ == '__main__': + main() \ No newline at end of file