Adding nxos_ntp

network/nxos/nxos_ntp.py

@@ -0,0 +1,632 @@
+#!/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_ntp
+version_added: "2.2"
+short_description: Manages core NTP configuration.
+description:
+    - Manages core NTP configuration.
+extends_documentation_fragment: nxos
+author:
+    - Jason Edelman (@jedelman8)
+options:
+    server:
+        description:
+            - Network address of NTP server.
+        required: false
+        default: null
+    peer:
+        description:
+            - Network address of NTP peer.
+        required: false
+        default: null
+    key_id:
+        description:
+            - Authentication key identifier to use with
+              given NTP server or peer.
+        required: false
+        default: null
+    prefer:
+        description:
+            - Makes given NTP server or peer the preferred
+              NTP server or peer for the device.
+        required: false
+        default: null
+        choices: ['enabled', 'disabled']
+    vrf_name:
+        description:
+            - Makes the device communicate with the given
+              NTP server or peer over a specific VRF.
+        required: false
+        default: null
+    source_addr:
+        description:
+            - Local source address from which NTP messages are sent.
+        required: false
+        default: null
+    source_int:
+        description:
+            - Local source interface from which NTP messages are sent.
+              Must be fully qualified interface name.
+        required: false
+        default: null
+    state:
+        description:
+            - Manage the state of the resource.
+        required: false
+        default: present
+        choices: ['present','absent']
+'''
+
+EXAMPLES = '''
+# Set NTP Server with parameters
+- nxos_ntp:
+    server=1.2.3.4
+    key_id=32
+    prefer=enabled
+    host={{ inventory_hostname }}
+    username={{ un }}
+    password={{ pwd }}
+'''
+
+RETURN = '''
+proposed:
+    description: k/v pairs of parameters passed into module
+    returned: always
+    type: dict
+    sample: {"address": "2.2.2.2", "key_id": "48",
+            "peer_type": "server", "prefer": "enabled",
+            "source": "3.3.3.3", "source_type": "source"}
+existing:
+    description:
+        - k/v pairs of existing ntp server/peer
+    type: dict
+    sample: {"address": "2.2.2.2", "key_id": "32",
+            "peer_type": "server", "prefer": "enabled",
+            "source": "ethernet2/1", "source_type": "source-interface"}
+end_state:
+    description: k/v pairs of ntp info after module execution
+    returned: always
+    type: dict
+    sample: {"address": "2.2.2.2", "key_id": "48",
+            "peer_type": "server", "prefer": "enabled",
+            "source": "3.3.3.3", "source_type": "source"}
+updates:
+    description: command sent to the device
+    returned: always
+    type: list
+    sample: ["ntp server 2.2.2.2 prefer key 48",
+             "no ntp source-interface ethernet2/1", "ntp source 3.3.3.3"]
+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 get_ntp_source(module):
+    source_type = None
+    source = None
+    command = 'show run | inc ntp.source'
+    output = execute_show_command(command, module, command_type='cli_show_ascii')
+
+    if output:
+        try:
+            if 'interface' in output[0]:
+                source_type = 'source-interface'
+            else:
+                source_type = 'source'
+            source = output[0].split()[2].lower()
+        except AttributeError:
+            source_type = None
+            source = None
+
+    return source_type, source
+
+
+def get_ntp_peer(module):
+    command = 'show run | inc ntp.(server|peer)'
+    ntp_peer_list = []
+    ntp = execute_show_command(
+                command, module, command_type='cli_show_ascii')[0]
+
+    ntp_regex = (
+                ".*ntp\s(server\s(?P<address>\S+)|peer\s(?P<peer_address>\S+))"
+                "\s*((?P<prefer>prefer)\s*)?(use-vrf\s(?P<vrf_name>\S+)\s*)?"
+                "(key\s(?P<key_id>\d+))?.*"
+                )
+
+    split_ntp = ntp.splitlines()
+    for peer_line in split_ntp:
+        ntp_peer = {}
+        try:
+            peer_address = None
+            vrf_name = None
+            prefer = None
+            key_id = None
+            match_ntp = re.match(ntp_regex, peer_line, re.DOTALL)
+            group_ntp = match_ntp.groupdict()
+
+            address = group_ntp["address"]
+            peer_address = group_ntp['peer_address']
+            prefer = group_ntp['prefer']
+            vrf_name = group_ntp['vrf_name']
+            key_id = group_ntp['key_id']
+
+            if prefer is not None:
+                prefer = 'enabled'
+            else:
+                prefer = 'disabled'
+
+            if address is not None:
+                peer_type = 'server'
+            elif peer_address is not None:
+                peer_type = 'peer'
+                address = peer_address
+
+            args = dict(peer_type=peer_type, address=address, prefer=prefer,
+                        vrf_name=vrf_name, key_id=key_id)
+
+            ntp_peer = dict((k, v) for k, v in args.iteritems())
+            ntp_peer_list.append(ntp_peer)
+        except AttributeError:
+            ntp_peer_list = []
+
+    return ntp_peer_list
+
+
+def get_ntp_existing(address, peer_type, module):
+    peer_dict = {}
+    peer_server_list = []
+
+    peer_list = get_ntp_peer(module)
+    for peer in peer_list:
+        if peer['address'] == address:
+            peer_dict.update(peer)
+        else:
+            peer_server_list.append(peer)
+
+    source_type, source = get_ntp_source(module)
+
+    if (source_type is not None and source is not None):
+        peer_dict['source_type'] = source_type
+        peer_dict['source'] = source
+
+    return (peer_dict, peer_server_list)
+
+
+def set_ntp_server_peer(peer_type, address, prefer, key_id, vrf_name):
+    command_strings = []
+
+    if prefer:
+        command_strings.append(' prefer')
+    if key_id:
+        command_strings.append(' key {0}'.format(key_id))
+    if vrf_name:
+        command_strings.append(' use-vrf {0}'.format(vrf_name))
+
+    command_strings.insert(0, 'ntp {0} {1}'.format(peer_type, address))
+
+    command = ''.join(command_strings)
+
+    return command
+
+
+def config_ntp(delta, existing):
+    address = delta.get('address', existing.get('address'))
+    peer_type = delta.get('peer_type', existing.get('peer_type'))
+    vrf_name = delta.get('vrf_name', existing.get('vrf_name'))
+    key_id = delta.get('key_id', existing.get('key_id'))
+    prefer = delta.get('prefer', existing.get('prefer'))
+
+    source_type = delta.get('source_type')
+    source = delta.get('source')
+
+    if prefer:
+        if prefer == 'enabled':
+            prefer = True
+        elif prefer == 'disabled':
+            prefer = False
+
+    if source:
+        source_type = delta.get('source_type', existing.get('source_type'))
+
+    ntp_cmds = []
+    if peer_type:
+        ntp_cmds.append(set_ntp_server_peer(
+            peer_type, address, prefer, key_id, vrf_name))
+    if source:
+        existing_source_type = existing.get('source_type')
+        existing_source = existing.get('source')
+        if existing_source_type and source_type != existing_source_type:
+            ntp_cmds.append('no ntp {0} {1}'.format(existing_source_type, existing_source))
+        ntp_cmds.append('ntp {0} {1}'.format(source_type, source))
+
+    return ntp_cmds
+
+
+def main():
+    argument_spec = dict(
+            server=dict(type='str'),
+            peer=dict(type='str'),
+            key_id=dict(type='str'),
+            prefer=dict(type='str', choices=['enabled', 'disabled']),
+            vrf_name=dict(type='str'),
+            source_addr=dict(type='str'),
+            source_int=dict(type='str'),
+            state=dict(choices=['absent', 'present'], default='present'),
+    )
+    module = get_network_module(argument_spec=argument_spec,
+                                mutually_exclusive=[
+                                    ['server','peer'],
+                                    ['source_addr','source_int']],
+                                supports_check_mode=True)
+
+    server = module.params['server'] or None
+    peer = module.params['peer'] or None
+    key_id = module.params['key_id']
+    prefer = module.params['prefer']
+    vrf_name = module.params['vrf_name']
+    source_addr = module.params['source_addr']
+    source_int = module.params['source_int']
+    state = module.params['state']
+    if source_int is not None:
+        source_int = source_int.lower()
+
+    if server:
+        peer_type = 'server'
+        address = server
+    elif peer:
+        peer_type = 'peer'
+        address = peer
+    else:
+        peer_type = None
+        address = None
+
+    source_type = None
+    source = None
+    if source_addr:
+        source_type = 'source'
+        source = source_addr
+    elif source_int:
+        source_type = 'source-interface'
+        source = source_int
+
+    if key_id or vrf_name or prefer:
+        if not server and not peer:
+            module.fail_json(
+                msg='Please supply the server or peer parameter')
+
+    args = dict(peer_type=peer_type, address=address, key_id=key_id,
+                prefer=prefer, vrf_name=vrf_name, source_type=source_type,
+                source=source)
+
+    proposed = dict((k, v) for k, v in args.iteritems() if v is not None)
+
+    existing, peer_server_list = get_ntp_existing(address, peer_type, module)
+
+    end_state = existing
+    changed = False
+    commands = []
+
+    if state == 'present':
+        delta = dict(set(proposed.iteritems()).difference(existing.iteritems()))
+        if delta:
+            command = config_ntp(delta, existing)
+            if command:
+                commands.append(command)
+
+    elif state == 'absent':
+        if existing.get('peer_type') and existing.get('address'):
+            command = 'no ntp {0} {1}'.format(
+                existing['peer_type'], existing['address'])
+            if command:
+                commands.append([command])
+
+        existing_source_type = existing.get('source_type')
+        existing_source = existing.get('source')
+        proposed_source_type = proposed.get('source_type')
+        proposed_source = proposed.get('source')
+
+        if proposed_source_type:
+            if proposed_source_type == existing_source_type:
+                if proposed_source == existing_source:
+                    command = 'no ntp {0} {1}'.format(
+                                existing_source_type, existing_source)
+                    if command:
+                        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_ntp_existing(address, peer_type, module)[0]
+
+    results = {}
+    results['proposed'] = proposed
+    results['existing'] = existing
+    results['updates'] = cmds
+    results['changed'] = changed
+    results['end_state'] = end_state
+    results['peer_server_list'] = peer_server_list
+
+    module.exit_json(**results)
+
+
+from ansible.module_utils.basic import *
+if __name__ == '__main__':
+    main()