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640 lines
19 KiB
Python
640 lines
19 KiB
Python
#!/usr/bin/python
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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DOCUMENTATION = '''
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---
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module: nxos_snmp_host
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version_added: "2.2"
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short_description: Manages SNMP host configuration.
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description:
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- Manages SNMP host configuration parameters.
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extends_documentation_fragment: nxos
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author:
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- Jason Edelman (@jedelman8)
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- Gabriele Gerbino (@GGabriele)
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notes:
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- C(state=absent) removes the host configuration if it is configured.
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options:
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snmp_host:
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description:
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- IP address of hostname of target host.
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required: true
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version:
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description:
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- SNMP version.
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required: false
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default: v2c
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choices: ['v2c', 'v3']
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community:
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description:
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- Community string or v3 username.
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required: false
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default: null
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udp:
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description:
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- UDP port number (0-65535).
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required: false
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default: null
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type:
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description:
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- type of message to send to host.
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required: false
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default: traps
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choices: ['trap', 'inform']
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vrf:
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description:
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- VRF to use to source traffic to source.
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required: false
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default: null
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vrf_filter:
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description:
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- Name of VRF to filter.
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required: false
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default: null
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src_intf:
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description:
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- Source interface.
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required: false
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default: null
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state:
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description:
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- Manage the state of the resource.
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required: true
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default: present
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choices: ['present','absent']
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'''
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EXAMPLES = '''
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# ensure snmp host is configured
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- nxos_snmp_host:
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snmp_host: 3.3.3.3
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community: TESTING
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state: present
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host: {{ inventory_hostname }}
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username: {{ un }}
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password: {{ pwd }}
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'''
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RETURN = '''
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proposed:
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description: k/v pairs of parameters passed into module
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returned: always
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type: dict
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sample: {"community": "TESTING", "snmp_host": "3.3.3.3",
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"snmp_type": "trap", "version": "v2c", "vrf_filter": "one_more_vrf"}
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existing:
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description: k/v pairs of existing snmp host
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type: dict
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sample: {"community": "TESTING", "snmp_type": "trap",
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"udp": "162", "v3": "noauth", "version": "v2c",
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"vrf": "test_vrf", "vrf_filter": ["test_vrf",
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"another_test_vrf"]}
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end_state:
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description: k/v pairs of switchport after module execution
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returned: always
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type: dict or null
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sample: {"community": "TESTING", "snmp_type": "trap",
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"udp": "162", "v3": "noauth", "version": "v2c",
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"vrf": "test_vrf", "vrf_filter": ["test_vrf",
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"another_test_vrf", "one_more_vrf"]}
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updates:
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description: commands sent to the device
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returned: always
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type: list
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sample: ["snmp-server host 3.3.3.3 filter-vrf another_test_vrf"]
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changed:
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description: check to see if a change was made on the device
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returned: always
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type: boolean
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sample: true
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'''
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import json
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# COMMON CODE FOR MIGRATION
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import re
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from ansible.module_utils.basic import get_exception
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from ansible.module_utils.netcfg import NetworkConfig, ConfigLine
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from ansible.module_utils.shell import ShellError
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try:
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from ansible.module_utils.nxos import get_module
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except ImportError:
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from ansible.module_utils.nxos import NetworkModule
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def to_list(val):
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if isinstance(val, (list, tuple)):
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return list(val)
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elif val is not None:
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return [val]
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else:
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return list()
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class CustomNetworkConfig(NetworkConfig):
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def expand_section(self, configobj, S=None):
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if S is None:
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S = list()
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S.append(configobj)
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for child in configobj.children:
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if child in S:
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continue
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self.expand_section(child, S)
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return S
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def get_object(self, path):
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for item in self.items:
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if item.text == path[-1]:
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parents = [p.text for p in item.parents]
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if parents == path[:-1]:
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return item
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def to_block(self, section):
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return '\n'.join([item.raw for item in section])
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def get_section(self, path):
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try:
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section = self.get_section_objects(path)
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return self.to_block(section)
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except ValueError:
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return list()
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def get_section_objects(self, path):
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if not isinstance(path, list):
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path = [path]
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obj = self.get_object(path)
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if not obj:
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raise ValueError('path does not exist in config')
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return self.expand_section(obj)
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def add(self, lines, parents=None):
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"""Adds one or lines of configuration
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"""
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ancestors = list()
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offset = 0
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obj = None
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## global config command
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if not parents:
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for line in to_list(lines):
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item = ConfigLine(line)
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item.raw = line
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if item not in self.items:
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self.items.append(item)
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else:
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for index, p in enumerate(parents):
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try:
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i = index + 1
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obj = self.get_section_objects(parents[:i])[0]
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ancestors.append(obj)
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except ValueError:
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# add parent to config
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offset = index * self.indent
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obj = ConfigLine(p)
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obj.raw = p.rjust(len(p) + offset)
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if ancestors:
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obj.parents = list(ancestors)
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ancestors[-1].children.append(obj)
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self.items.append(obj)
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ancestors.append(obj)
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# add child objects
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for line in to_list(lines):
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# check if child already exists
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for child in ancestors[-1].children:
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if child.text == line:
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break
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else:
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offset = len(parents) * self.indent
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item = ConfigLine(line)
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item.raw = line.rjust(len(line) + offset)
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item.parents = ancestors
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ancestors[-1].children.append(item)
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self.items.append(item)
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def get_network_module(**kwargs):
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try:
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return get_module(**kwargs)
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except NameError:
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return NetworkModule(**kwargs)
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def get_config(module, include_defaults=False):
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config = module.params['config']
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if not config:
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try:
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config = module.get_config()
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except AttributeError:
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defaults = module.params['include_defaults']
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config = module.config.get_config(include_defaults=defaults)
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return CustomNetworkConfig(indent=2, contents=config)
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def load_config(module, candidate):
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config = get_config(module)
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commands = candidate.difference(config)
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commands = [str(c).strip() for c in commands]
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save_config = module.params['save']
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result = dict(changed=False)
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if commands:
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if not module.check_mode:
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try:
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module.configure(commands)
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except AttributeError:
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module.config(commands)
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if save_config:
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try:
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module.config.save_config()
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except AttributeError:
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module.execute(['copy running-config startup-config'])
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result['changed'] = True
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result['updates'] = commands
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return result
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# END OF COMMON CODE
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def execute_config_command(commands, module):
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try:
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module.configure(commands)
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending CLI commands',
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error=str(clie), commands=commands)
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except AttributeError:
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try:
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commands.insert(0, 'configure')
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module.cli.add_commands(commands, output='config')
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module.cli.run_commands()
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending CLI commands',
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error=str(clie), commands=commands)
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def get_cli_body_ssh(command, response, module):
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"""Get response for when transport=cli. This is kind of a hack and mainly
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needed because these modules were originally written for NX-API. And
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not every command supports "| json" when using cli/ssh. As such, we assume
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if | json returns an XML string, it is a valid command, but that the
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resource doesn't exist yet. Instead, the output will be a raw string
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when issuing commands containing 'show run'.
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"""
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if 'xml' in response[0]:
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body = []
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elif 'show run' in command:
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body = response
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else:
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try:
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if isinstance(response[0], str):
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body = [json.loads(response[0])]
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else:
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body = response
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except ValueError:
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module.fail_json(msg='Command does not support JSON output',
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command=command)
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return body
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def execute_show(cmds, module, command_type=None):
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command_type_map = {
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'cli_show': 'json',
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'cli_show_ascii': 'text'
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}
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try:
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if command_type:
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response = module.execute(cmds, command_type=command_type)
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else:
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response = module.execute(cmds)
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending {0}'.format(cmds),
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error=str(clie))
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except AttributeError:
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try:
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if command_type:
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command_type = command_type_map.get(command_type)
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module.cli.add_commands(cmds, output=command_type)
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response = module.cli.run_commands()
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else:
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module.cli.add_commands(cmds)
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response = module.cli.run_commands()
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending {0}'.format(cmds),
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error=str(clie))
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return response
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def execute_show_command(command, module, command_type='cli_show'):
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if module.params['transport'] == 'cli':
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if 'show run' not in command:
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command += ' | json'
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cmds = [command]
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response = execute_show(cmds, module)
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body = get_cli_body_ssh(command, response, module)
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elif module.params['transport'] == 'nxapi':
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cmds = [command]
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body = execute_show(cmds, module, command_type=command_type)
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return body
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def apply_key_map(key_map, table):
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new_dict = {}
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for key, value in table.items():
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new_key = key_map.get(key)
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if new_key:
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value = table.get(key)
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if value:
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new_dict[new_key] = str(value)
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else:
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new_dict[new_key] = value
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return new_dict
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def get_snmp_host(host, module):
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command = 'show snmp host'
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body = execute_show_command(command, module)
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host_map = {
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'port': 'udp',
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'version': 'version',
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'level': 'v3',
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'type': 'snmp_type',
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'secname': 'community'
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}
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resource = {}
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if body:
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try:
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resource_table = body[0]['TABLE_host']['ROW_host']
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if isinstance(resource_table, dict):
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resource_table = [resource_table]
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for each in resource_table:
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key = str(each['host'])
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src = each.get('src_intf', None)
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host_resource = apply_key_map(host_map, each)
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if src:
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host_resource['src_intf'] = src.split(':')[1].strip()
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vrf_filt = each.get('TABLE_vrf_filters', None)
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if vrf_filt:
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vrf_filter = vrf_filt['ROW_vrf_filters']['vrf_filter'].split(':')[1].split(',')
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filters = [vrf.strip() for vrf in vrf_filter]
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host_resource['vrf_filter'] = filters
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vrf = each.get('vrf', None)
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if vrf:
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host_resource['vrf'] = vrf.split(':')[1].strip()
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resource[key] = host_resource
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except (KeyError, AttributeError, TypeError):
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return resource
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find = resource.get(host, None)
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if find:
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fix_find = {}
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for (key, value) in find.iteritems():
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if isinstance(value, str):
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fix_find[key] = value.strip()
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else:
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fix_find[key] = value
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return fix_find
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else:
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return {}
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else:
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return {}
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def remove_snmp_host(host, existing):
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commands = []
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if existing['version'] == 'v3':
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existing['version'] = '3'
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command = 'no snmp-server host {0} {snmp_type} version \
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{version} {v3} {community}'.format(host, **existing)
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elif existing['version'] == 'v2c':
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existing['version'] = '2c'
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command = 'no snmp-server host {0} {snmp_type} version \
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{version} {community}'.format(host, **existing)
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if command:
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commands.append(command)
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return commands
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def config_snmp_host(delta, proposed, existing, module):
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commands = []
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command_builder = []
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host = proposed['snmp_host']
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cmd = 'snmp-server host {0}'.format(proposed['snmp_host'])
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snmp_type = delta.get('snmp_type', None)
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version = delta.get('version', None)
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ver = delta.get('v3', None)
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community = delta.get('community', None)
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command_builder.append(cmd)
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if any([snmp_type, version, ver, community]):
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type_string = snmp_type or existing.get('type')
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if type_string:
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command_builder.append(type_string)
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version = version or existing.get('version')
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if version:
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if version == 'v2c':
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vn = '2c'
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elif version == 'v3':
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vn = '3'
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version_string = 'version {0}'.format(vn)
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command_builder.append(version_string)
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if ver:
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ver_string = ver or existing.get('v3')
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command_builder.append(ver_string)
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if community:
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community_string = community or existing.get('community')
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command_builder.append(community_string)
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cmd = ' '.join(command_builder)
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commands.append(cmd)
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CMDS = {
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'vrf_filter': 'snmp-server host {0} filter-vrf {vrf_filter}',
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'vrf': 'snmp-server host {0} use-vrf {vrf}',
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'udp': 'snmp-server host {0} udp-port {udp}',
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'src_intf': 'snmp-server host {0} source-interface {src_intf}'
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}
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for key, value in delta.iteritems():
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if key in ['vrf_filter', 'vrf', 'udp', 'src_intf']:
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command = CMDS.get(key, None)
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if command:
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cmd = command.format(host, **delta)
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commands.append(cmd)
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cmd = None
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return commands
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def flatten_list(command_lists):
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flat_command_list = []
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for command in command_lists:
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if isinstance(command, list):
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flat_command_list.extend(command)
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else:
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flat_command_list.append(command)
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return flat_command_list
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def main():
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argument_spec = dict(
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snmp_host=dict(required=True, type='str'),
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community=dict(type='str'),
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udp=dict(type='str'),
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version=dict(choices=['v2c', 'v3'], default='v2c'),
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src_intf=dict(type='str'),
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v3=dict(choices=['noauth', 'auth', 'priv']),
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vrf_filter=dict(type='str'),
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vrf=dict(type='str'),
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snmp_type=dict(choices=['trap', 'inform'], default='trap'),
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state=dict(choices=['absent', 'present'], default='present'),
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)
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module = get_network_module(argument_spec=argument_spec,
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supports_check_mode=True)
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|
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snmp_host = module.params['snmp_host']
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community = module.params['community']
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udp = module.params['udp']
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version = module.params['version']
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src_intf = module.params['src_intf']
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v3 = module.params['v3']
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vrf_filter = module.params['vrf_filter']
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vrf = module.params['vrf']
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snmp_type = module.params['snmp_type']
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state = module.params['state']
|
|
|
|
if snmp_type == 'inform' and version != 'v3':
|
|
module.fail_json(msg='inform requires snmp v3')
|
|
|
|
if version == 'v2c' and v3:
|
|
module.fail_json(msg='param: "v3" should not be used when '
|
|
'using version v2c')
|
|
|
|
if not any([vrf_filter, vrf, udp, src_intf]):
|
|
if not all([snmp_type, version, community]):
|
|
module.fail_json(msg='when not configuring options like '
|
|
'vrf_filter, vrf, udp, and src_intf,'
|
|
'the following params are required: '
|
|
'type, version, community')
|
|
|
|
if version == 'v3' and v3 is None:
|
|
module.fail_json(msg='when using version=v3, the param v3 '
|
|
'(options: auth, noauth, priv) is also required')
|
|
|
|
existing = get_snmp_host(snmp_host, module)
|
|
|
|
# existing returns the list of vrfs configured for a given host
|
|
# checking to see if the proposed is in the list
|
|
store = existing.get('vrf_filter', None)
|
|
if existing and store:
|
|
if vrf_filter not in existing['vrf_filter']:
|
|
existing['vrf_filter'] = None
|
|
else:
|
|
existing['vrf_filter'] = vrf_filter
|
|
|
|
args = dict(
|
|
community=community,
|
|
snmp_host=snmp_host,
|
|
udp=udp,
|
|
version=version,
|
|
src_intf=src_intf,
|
|
vrf_filter=vrf_filter,
|
|
v3=v3,
|
|
vrf=vrf,
|
|
snmp_type=snmp_type
|
|
)
|
|
|
|
proposed = dict((k, v) for k, v in args.iteritems() if v is not None)
|
|
|
|
delta = dict(set(proposed.iteritems()).difference(existing.iteritems()))
|
|
|
|
changed = False
|
|
commands = []
|
|
end_state = existing
|
|
|
|
if state == 'absent':
|
|
if existing:
|
|
command = remove_snmp_host(snmp_host, existing)
|
|
commands.append(command)
|
|
elif state == 'present':
|
|
if delta:
|
|
command = config_snmp_host(delta, proposed, existing, module)
|
|
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_snmp_host(snmp_host, module)
|
|
|
|
if store:
|
|
existing['vrf_filter'] = store
|
|
|
|
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()
|