From 4c3a1e37ff3c7f7978fe5c607d4152be6bfdb053 Mon Sep 17 00:00:00 2001 From: GGabriele Date: Sat, 3 Sep 2016 02:40:23 +0200 Subject: [PATCH] Added python object for 2.1 and 2.2 support --- .../modules/network/nxos/nxos_feature.py | 880 +++++++++++++----- 1 file changed, 640 insertions(+), 240 deletions(-) diff --git a/lib/ansible/modules/network/nxos/nxos_feature.py b/lib/ansible/modules/network/nxos/nxos_feature.py index efe512728b..b7269fe66a 100644 --- a/lib/ansible/modules/network/nxos/nxos_feature.py +++ b/lib/ansible/modules/network/nxos/nxos_feature.py @@ -1,276 +1,676 @@ -#!/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 . -# +# COMMON CODE FOR MIGRATION -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'] -''' +import re +import time +import collections +import itertools +import shlex -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" -''' +from ansible.module_utils.basic import AnsibleModule, env_fallback, get_exception +from ansible.module_utils.basic import BOOLEANS_TRUE, BOOLEANS_FALSE +from ansible.module_utils.shell import Shell, ShellError, HAS_PARAMIKO +from ansible.module_utils.netcfg import parse +from ansible.module_utils.urls import fetch_url -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) +DEFAULT_COMMENT_TOKENS = ['#', '!'] + +class ConfigLine(object): + + def __init__(self, text): + self.text = text + self.children = list() + self.parents = list() + self.raw = None + + @property + def line(self): + line = ['set'] + line.extend([p.text for p in self.parents]) + line.append(self.text) + return ' '.join(line) + + def __str__(self): + return self.raw + + def __eq__(self, other): + if self.text == other.text: + return self.parents == other.parents + + def __ne__(self, other): + return not self.__eq__(other) + +def ignore_line(text, tokens=None): + for item in (tokens or DEFAULT_COMMENT_TOKENS): + if text.startswith(item): + return True + +def get_next(iterable): + item, next_item = itertools.tee(iterable, 2) + next_item = itertools.islice(next_item, 1, None) + return itertools.izip_longest(item, next_item) + +def parse(lines, indent, comment_tokens=None): + toplevel = re.compile(r'\S') + childline = re.compile(r'^\s*(.+)$') + + ancestors = list() + config = list() + + for line in str(lines).split('\n'): + text = str(re.sub(r'([{};])', '', line)).strip() + + cfg = ConfigLine(text) + cfg.raw = line + + if not text or ignore_line(text, comment_tokens): + continue + + # handle top level commands + if toplevel.match(line): + ancestors = [cfg] + + # handle sub level commands + else: + match = childline.match(line) + line_indent = match.start(1) + level = int(line_indent / indent) + parent_level = level - 1 + + cfg.parents = ancestors[:level] + + if level > len(ancestors): + config.append(cfg) + continue + + for i in range(level, len(ancestors)): + ancestors.pop() + + ancestors.append(cfg) + ancestors[parent_level].children.append(cfg) + + config.append(cfg) + + return config -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. - """ - if 'xml' in response[0]: - body = [] - else: +class CustomNetworkConfig(object): + + def __init__(self, indent=None, contents=None, device_os=None): + self.indent = indent or 1 + self._config = list() + self._device_os = device_os + + if contents: + self.load(contents) + + @property + def items(self): + return self._config + + @property + def lines(self): + lines = list() + for item, next_item in get_next(self.items): + if next_item is None: + lines.append(item.line) + elif not next_item.line.startswith(item.line): + lines.append(item.line) + return lines + + def __str__(self): + text = '' + for item in self.items: + if not item.parents: + expand = self.get_section(item.text) + text += '%s\n' % self.get_section(item.text) + return str(text).strip() + + def load(self, contents): + self._config = parse(contents, indent=self.indent) + + def load_from_file(self, filename): + self.load(open(filename).read()) + + def get(self, path): + if isinstance(path, basestring): + path = [path] + for item in self._config: + if item.text == path[-1]: + parents = [p.text for p in item.parents] + if parents == path[:-1]: + return item + + def search(self, regexp, path=None): + regex = re.compile(r'^%s' % regexp, re.M) + + if path: + parent = self.get(path) + if not parent or not parent.children: + return + children = [c.text for c in parent.children] + data = '\n'.join(children) + else: + data = str(self) + + match = regex.search(data) + if match: + if match.groups(): + values = match.groupdict().values() + groups = list(set(match.groups()).difference(values)) + return (groups, match.groupdict()) + else: + return match.group() + + def findall(self, regexp): + regexp = r'%s' % regexp + return re.findall(regexp, str(self)) + + def expand(self, obj, items): + block = [item.raw for item in obj.parents] + block.append(obj.raw) + + current_level = items + for b in block: + if b not in current_level: + current_level[b] = collections.OrderedDict() + current_level = current_level[b] + for c in obj.children: + if c.raw not in current_level: + current_level[c.raw] = collections.OrderedDict() + + def to_lines(self, section): + lines = list() + for entry in section[1:]: + line = ['set'] + line.extend([p.text for p in entry.parents]) + line.append(entry.text) + lines.append(' '.join(line)) + return lines + + def to_block(self, section): + return '\n'.join([item.raw for item in section]) + + def get_section(self, path): try: - body = [json.loads(response[0])] + section = self.get_section_objects(path) + if self._device_os == 'junos': + return self.to_lines(section) + return self.to_block(section) except ValueError: - module.fail_json(msg='Command does not support JSON output', - command=command) - return body + 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 execute_show(cmds, module, command_type=None): - 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)) - return response + 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 flatten(self, data, obj=None): + if obj is None: + obj = list() + for k, v in data.items(): + obj.append(k) + self.flatten(v, obj) + return obj -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, module) - elif module.params['transport'] == 'nxapi': - cmds = [command] - body = execute_show(cmds, module, command_type=command_type) + 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 - return body + def get_children(self, path): + obj = self.get_object(path) + if obj: + return obj.children + def difference(self, other, path=None, match='line', replace='line'): + updates = 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) + config = self.items + if path: + config = self.get_children(path) or list() + + if match == 'line': + for item in config: + if item not in other.items: + updates.append(item) + + elif match == 'strict': + if path: + current = other.get_children(path) or list() else: - new_dict[new_key] = value - return new_dict + current = other.items + + for index, item in enumerate(config): + try: + if item != current[index]: + updates.append(item) + except IndexError: + updates.append(item) + + elif match == 'exact': + if path: + current = other.get_children(path) or list() + else: + current = other.items + + if len(current) != len(config): + updates.extend(config) + else: + for ours, theirs in itertools.izip(config, current): + if ours != theirs: + updates.extend(config) + break + + if self._device_os == 'junos': + return updates + + diffs = collections.OrderedDict() + for update in updates: + if replace == 'block' and update.parents: + update = update.parents[-1] + self.expand(update, diffs) + + return self.flatten(diffs) + + def replace(self, replace, text=None, regex=None, parents=None, + add_if_missing=False, ignore_whitespace=False): + match = None + + parents = parents or list() + if text is None and regex is None: + raise ValueError('missing required arguments') + + if not regex: + regex = ['^%s$' % text] + + patterns = [re.compile(r, re.I) for r in to_list(regex)] + + for item in self.items: + for regexp in patterns: + if ignore_whitespace is True: + string = item.text + else: + string = item.raw + if regexp.search(item.text): + if item.text != replace: + if parents == [p.text for p in item.parents]: + match = item + break + + if match: + match.text = replace + indent = len(match.raw) - len(match.raw.lstrip()) + match.raw = replace.rjust(len(replace) + indent) + + elif add_if_missing: + self.add(replace, parents=parents) -def get_available_features(feature, module): - available_features = {} - command = 'show feature' - body = execute_show_command(command, module) + def add(self, lines, parents=None): + """Adds one or lines of configuration + """ - try: - body = body[0]['TABLE_cfcFeatureCtrlTable']['ROW_cfcFeatureCtrlTable'] - except (TypeError, IndexError): - return available_features + ancestors = list() + offset = 0 + obj = None - for each_feature in body: - feature = each_feature['cfcFeatureCtrlName2'] - state = each_feature['cfcFeatureCtrlOpStatus2'] + ## 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) - 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 + for index, p in enumerate(parents): + try: + i = index + 1 + obj = self.get_section_objects(parents[:i])[0] + ancestors.append(obj) - return available_features + 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_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), +def argument_spec(): + return dict( + # config options + running_config=dict(aliases=['config']), + save_config=dict(type='bool', default=False, aliases=['save']) ) - module = get_module(argument_spec=argument_spec, - supports_check_mode=True) +nxos_argument_spec = argument_spec() - 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) +NET_PASSWD_RE = re.compile(r"[\r\n]?password: $", re.I) + +NET_COMMON_ARGS = dict( + host=dict(required=True), + port=dict(type='int'), + username=dict(fallback=(env_fallback, ['ANSIBLE_NET_USERNAME'])), + password=dict(no_log=True, fallback=(env_fallback, ['ANSIBLE_NET_PASSWORD'])), + ssh_keyfile=dict(fallback=(env_fallback, ['ANSIBLE_NET_SSH_KEYFILE']), type='path'), + transport=dict(default='cli', choices=['cli', 'nxapi']), + use_ssl=dict(default=False, type='bool'), + validate_certs=dict(default=True, type='bool'), + provider=dict(type='dict'), + timeout=dict(default=10, type='int') +) + +NXAPI_COMMAND_TYPES = ['cli_show', 'cli_show_ascii', 'cli_conf', 'bash'] + +NXAPI_ENCODINGS = ['json', 'xml'] + +CLI_PROMPTS_RE = [ + re.compile(r'[\r\n]?[a-zA-Z]{1}[a-zA-Z0-9-]*[>|#|%](?:\s*)$'), + re.compile(r'[\r\n]?[a-zA-Z]{1}[a-zA-Z0-9-]*\(.+\)#(?:\s*)$') +] + +CLI_ERRORS_RE = [ + re.compile(r"% ?Error"), + re.compile(r"^% \w+", re.M), + re.compile(r"% ?Bad secret"), + re.compile(r"invalid input", re.I), + re.compile(r"(?:incomplete|ambiguous) command", re.I), + re.compile(r"connection timed out", re.I), + re.compile(r"[^\r\n]+ not found", re.I), + re.compile(r"'[^']' +returned error code: ?\d+"), + re.compile(r"syntax error"), + re.compile(r"unknown command") +] + + +def to_list(val): + if isinstance(val, (list, tuple)): + return list(val) + elif val is not None: + return [val] else: - existstate = available_features[feature] + return list() - existing = dict(state=existstate) - proposed = dict(state=state) - changed = False - end_state = existing - cmds = get_commands(proposed, existing, state, module) +class Nxapi(object): - if cmds: - if module.check_mode: - module.exit_json(changed=True, commands=cmds) + def __init__(self, module): + self.module = module + + # sets the module_utils/urls.py req parameters + self.module.params['url_username'] = module.params['username'] + self.module.params['url_password'] = module.params['password'] + + self.url = None + self._nxapi_auth = None + + def _get_body(self, commands, command_type, encoding, version='1.0', chunk='0', sid=None): + """Encodes a NXAPI JSON request message + """ + if isinstance(commands, (list, set, tuple)): + commands = ' ;'.join(commands) + + if encoding not in NXAPI_ENCODINGS: + msg = 'invalid encoding, received %s, exceped one of %s' % \ + (encoding, ','.join(NXAPI_ENCODINGS)) + self.module_fail_json(msg=msg) + + msg = { + 'version': version, + 'type': command_type, + 'chunk': chunk, + 'sid': sid, + 'input': commands, + 'output_format': encoding + } + return dict(ins_api=msg) + + def connect(self): + host = self.module.params['host'] + port = self.module.params['port'] + + if self.module.params['use_ssl']: + proto = 'https' + if not port: + port = 443 + else: + proto = 'http' + if not port: + port = 80 + + self.url = '%s://%s:%s/ins' % (proto, host, port) + + def send(self, commands, command_type='cli_show_ascii', encoding='json'): + """Send commands to the device. + """ + clist = to_list(commands) + + if command_type not in NXAPI_COMMAND_TYPES: + msg = 'invalid command_type, received %s, exceped one of %s' % \ + (command_type, ','.join(NXAPI_COMMAND_TYPES)) + self.module_fail_json(msg=msg) + + data = self._get_body(clist, command_type, encoding) + data = self.module.jsonify(data) + + headers = {'Content-Type': 'application/json'} + if self._nxapi_auth: + headers['Cookie'] = self._nxapi_auth + + response, headers = fetch_url(self.module, self.url, data=data, + headers=headers, method='POST') + + self._nxapi_auth = headers.get('set-cookie') + + if headers['status'] != 200: + self.module.fail_json(**headers) + + response = self.module.from_json(response.read()) + result = list() + + output = response['ins_api']['outputs']['output'] + for item in to_list(output): + if item['code'] != '200': + self.module.fail_json(**item) else: - execute_config_command(cmds, module) - changed = True - updated_features = get_available_features(feature, module) - existstate = updated_features[feature] - end_state = dict(state=existstate) + result.append(item['body']) - 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) + return result -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() +class Cli(object): + + def __init__(self, module): + self.module = module + self.shell = None + + def connect(self, **kwargs): + host = self.module.params['host'] + port = self.module.params['port'] or 22 + + username = self.module.params['username'] + password = self.module.params['password'] + timeout = self.module.params['timeout'] + key_filename = self.module.params['ssh_keyfile'] + + allow_agent = (key_filename is not None) or (key_filename is None and password is None) + + try: + self.shell = Shell(kickstart=False, prompts_re=CLI_PROMPTS_RE, + errors_re=CLI_ERRORS_RE) + self.shell.open(host, port=port, username=username, + password=password, key_filename=key_filename, + allow_agent=allow_agent, timeout=timeout) + except ShellError: + e = get_exception() + msg = 'failed to connect to %s:%s - %s' % (host, port, str(e)) + self.module.fail_json(msg=msg) + + def send(self, commands, encoding='text'): + try: + return self.shell.send(commands) + except ShellError: + e = get_exception() + self.module.fail_json(msg=e.message, commands=commands) + + +class NetworkModule(AnsibleModule): + + def __init__(self, *args, **kwargs): + super(NetworkModule, self).__init__(*args, **kwargs) + self.connection = None + self._config = None + self._connected = False + + @property + def connected(self): + return self._connected + + @property + def config(self): + if not self._config: + self._config = self.get_config() + return self._config + + def _load_params(self): + super(NetworkModule, self)._load_params() + provider = self.params.get('provider') or dict() + for key, value in provider.items(): + if key in NET_COMMON_ARGS: + if self.params.get(key) is None and value is not None: + self.params[key] = value + + def connect(self): + cls = globals().get(str(self.params['transport']).capitalize()) + try: + self.connection = cls(self) + except TypeError: + e = get_exception() + self.fail_json(msg=e.message) + + self.connection.connect() + + if self.params['transport'] == 'cli': + self.connection.send('terminal length 0') + + self._connected = True + + def configure(self, commands): + commands = to_list(commands) + if self.params['transport'] == 'cli': + return self.configure_cli(commands) + else: + return self.execute(commands, command_type='cli_conf') + + def configure_cli(self, commands): + commands = to_list(commands) + commands.insert(0, 'configure') + responses = self.execute(commands) + responses.pop(0) + return responses + + def execute(self, commands, **kwargs): + if not self.connected: + self.connect() + return self.connection.send(commands, **kwargs) + + def disconnect(self): + self.connection.close() + self._connected = False + + def parse_config(self, cfg): + return parse(cfg, indent=2) + + def get_config(self): + cmd = 'show running-config' + if self.params.get('include_defaults'): + cmd += ' all' + response = self.execute(cmd) + return response[0] + + +def get_module(**kwargs): + """Return instance of NetworkModule + """ + argument_spec = NET_COMMON_ARGS.copy() + if kwargs.get('argument_spec'): + argument_spec.update(kwargs['argument_spec']) + kwargs['argument_spec'] = argument_spec + + module = NetworkModule(**kwargs) + + if module.params['transport'] == 'cli' and not HAS_PARAMIKO: + module.fail_json(msg='paramiko is required but does not appear to be installed') + + return module + + +def custom_get_config(module, include_defaults=False): + config = module.params['running_config'] + if not config: + cmd = 'show running-config' + if module.params['include_defaults']: + cmd += ' all' + if module.params['transport'] == 'nxapi': + config = module.execute([cmd], command_type='cli_show_ascii')[0] + else: + config = module.execute([cmd])[0] + + return CustomNetworkConfig(indent=2, contents=config) + +def load_config(module, candidate): + config = custom_get_config(module) + + commands = candidate.difference(config) + commands = [str(c).strip() for c in commands] + + save_config = module.params['save_config'] + + result = dict(changed=False) + + if commands: + if not module.check_mode: + module.configure(commands) + if save_config: + module.config.save_config() + + result['changed'] = True + result['updates'] = commands + + return result +# END OF COMMON CODE