473 lines
15 KiB
Python
473 lines
15 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2017, Ansible by Red Hat, inc
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'network'}
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DOCUMENTATION = """
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---
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module: eos_interface
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version_added: "2.5"
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author: "Ganesh Nalawade (@ganeshrn)"
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short_description: Manage Interface on Arista EOS network devices
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description:
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- This module provides declarative management of Interfaces
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on Arista EOS network devices.
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notes:
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- Tested against EOS 4.15
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options:
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name:
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description:
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- Name of the Interface to be configured on remote device. The name of interface
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should be in expanded format and not abbreviated.
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required: true
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description:
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description:
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- Description of Interface upto 240 characters.
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enabled:
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description:
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- Interface link status. If the value is I(True) the interface state will be
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enabled, else if value is I(False) interface will be in disable (shutdown) state.
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default: True
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type: bool
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speed:
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description:
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- This option configures autoneg and speed/duplex/flowcontrol for the interface
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given in C(name) option.
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mtu:
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description:
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- Set maximum transmission unit size in bytes of transmit packet for the interface given
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in C(name) option.
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tx_rate:
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description:
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- Transmit rate in bits per second (bps) for the interface given in C(name) option.
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- This is state check parameter only.
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- Supports conditionals, see L(Conditionals in Networking Modules,../network/user_guide/network_working_with_command_output.html)
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rx_rate:
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description:
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- Receiver rate in bits per second (bps) for the interface given in C(name) option.
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- This is state check parameter only.
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- Supports conditionals, see L(Conditionals in Networking Modules,../network/user_guide/network_working_with_command_output.html)
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neighbors:
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description:
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- Check the operational state of given interface C(name) for LLDP neighbor.
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- The following suboptions are available.
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suboptions:
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host:
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description:
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- "LLDP neighbor host for given interface C(name)."
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port:
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description:
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- "LLDP neighbor port to which given interface C(name) is connected."
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aggregate:
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description:
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- List of Interfaces definitions. Each of the entry in aggregate list should
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define name of interface C(name) and other options as required.
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delay:
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description:
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- Time in seconds to wait before checking for the operational state on remote
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device. This wait is applicable for operational state argument which are
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I(state) with values C(up)/C(down), I(tx_rate) and I(rx_rate).
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default: 10
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state:
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description:
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- State of the Interface configuration, C(up) means present and
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operationally up and C(down) means present and operationally C(down)
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default: present
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choices: ['present', 'absent', 'up', 'down']
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extends_documentation_fragment: eos
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"""
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EXAMPLES = """
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- name: configure interface
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eos_interface:
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name: ethernet1
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description: test-interface
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speed: 100full
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mtu: 512
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- name: remove interface
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eos_interface:
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name: ethernet1
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state: absent
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- name: make interface up
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eos_interface:
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name: ethernet1
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enabled: True
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- name: make interface down
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eos_interface:
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name: ethernet1
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enabled: False
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- name: Check intent arguments
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eos_interface:
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name: ethernet1
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state: up
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tx_rate: ge(0)
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rx_rate: le(0)
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- name: Check neighbors intent arguments
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eos_interface:
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name: ethernet1
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neighbors:
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- port: eth0
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host: netdev
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- name: Configure interface in disabled state and check if the operational state is disabled or not
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eos_interface:
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name: ethernet1
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enabled: False
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state: down
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- name: Add interface using aggregate
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eos_interface:
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aggregate:
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- { name: ethernet1, mtu: 256, description: test-interface-1 }
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- { name: ethernet2, mtu: 516, description: test-interface-2 }
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speed: 100full
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state: present
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- name: Delete interface using aggregate
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eos_interface:
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aggregate:
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- name: loopback9
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- name: loopback10
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state: absent
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"""
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RETURN = """
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commands:
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description: The list of configuration mode commands to send to the device.
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returned: always, except for the platforms that use Netconf transport to manage the device.
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type: list
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sample:
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- interface ethernet1
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- description test-interface
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- speed 100full
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- mtu 512
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"""
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import re
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from copy import deepcopy
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from time import sleep
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.network.common.config import NetworkConfig
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from ansible.module_utils.network.common.utils import conditional, remove_default_spec
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from ansible.module_utils.network.eos.eos import get_config, load_config, run_commands
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from ansible.module_utils.network.eos.eos import eos_argument_spec
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def validate_mtu(value, module):
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if value and not 68 <= int(value) <= 65535:
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module.fail_json(msg='mtu must be between 68 and 65535')
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def validate_param_values(module, obj, param=None):
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if param is None:
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param = module.params
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for key in obj:
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# validate the param value (if validator func exists)
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validator = globals().get('validate_%s' % key)
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if callable(validator):
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validator(param.get(key), module)
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def parse_shutdown(configobj, name):
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cfg = configobj['interface %s' % name]
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cfg = '\n'.join(cfg.children)
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match = re.search(r'shutdown', cfg, re.M)
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return True if match else False
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def parse_config_argument(configobj, name, arg=None):
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cfg = configobj['interface %s' % name]
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cfg = '\n'.join(cfg.children)
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match = re.search(r'%s (.+)$' % arg, cfg, re.M)
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if match:
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return match.group(1)
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def search_obj_in_list(name, lst):
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for o in lst:
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if o['name'] == name:
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return o
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return None
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def add_command_to_interface(interface, cmd, commands):
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if interface not in commands:
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commands.append(interface)
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commands.append(cmd)
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def map_config_to_obj(module):
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config = get_config(module)
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configobj = NetworkConfig(indent=3, contents=config)
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match = re.findall(r'^interface (\S+)', config, re.M)
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if not match:
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return list()
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instances = list()
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for item in set(match):
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obj = {
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'name': item.lower(),
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'description': parse_config_argument(configobj, item, 'description'),
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'speed': parse_config_argument(configobj, item, 'speed'),
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'mtu': parse_config_argument(configobj, item, 'mtu'),
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'disable': parse_shutdown(configobj, item),
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'state': 'present'
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}
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instances.append(obj)
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return instances
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def map_params_to_obj(module):
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obj = []
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aggregate = module.params.get('aggregate')
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if aggregate:
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for item in aggregate:
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for key in item:
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if item.get(key) is None:
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item[key] = module.params[key]
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item['name'] = item['name'].lower()
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validate_param_values(module, item, item)
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d = item.copy()
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if d['enabled']:
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d['disable'] = False
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else:
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d['disable'] = True
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obj.append(d)
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else:
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params = {
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'name': module.params['name'].lower(),
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'description': module.params['description'],
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'speed': module.params['speed'],
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'mtu': module.params['mtu'],
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'state': module.params['state'],
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'delay': module.params['delay'],
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'tx_rate': module.params['tx_rate'],
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'rx_rate': module.params['rx_rate'],
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'neighbors': module.params['neighbors']
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}
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validate_param_values(module, params)
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if module.params['enabled']:
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params.update({'disable': False})
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else:
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params.update({'disable': True})
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obj.append(params)
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return obj
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def map_obj_to_commands(updates, modules):
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commands = list()
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want, have = updates
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args = ('speed', 'description', 'mtu')
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for w in want:
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name = w['name']
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disable = w['disable']
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state = w['state']
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obj_in_have = search_obj_in_list(name, have)
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interface = 'interface ' + name
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if state == 'absent' and obj_in_have:
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commands.append('no ' + interface)
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elif state in ('present', 'up', 'down'):
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if obj_in_have:
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for item in args:
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candidate = w.get(item)
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running = obj_in_have.get(item)
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if candidate != running:
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if candidate:
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cmd = "{0} {1}".format(item, candidate)
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add_command_to_interface(interface, cmd, commands)
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if disable and not obj_in_have.get('disable', False):
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add_command_to_interface(interface, 'shutdown', commands)
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elif not disable and obj_in_have.get('disable', False):
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add_command_to_interface(interface, 'no shutdown', commands)
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else:
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commands.append(interface)
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for item in args:
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value = w.get(item)
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if value:
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commands.append("{0} {1}".format(item, value))
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if disable:
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commands.append('no shutdown')
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return commands
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def check_declarative_intent_params(module, want, result):
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failed_conditions = []
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have_neighbors = None
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for w in want:
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want_state = w.get('state')
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want_tx_rate = w.get('tx_rate')
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want_rx_rate = w.get('rx_rate')
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want_neighbors = w.get('neighbors')
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if want_state not in ('up', 'down') and not want_tx_rate and not want_rx_rate and not want_neighbors:
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continue
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if result['changed']:
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sleep(w['delay'])
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command = {'command': 'show interfaces %s' % w['name'], 'output': 'text'}
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output = run_commands(module, [command])
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if want_state in ('up', 'down'):
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match = re.search(r'%s (\w+)' % 'line protocol is', output[0], re.M)
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have_state = None
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if match:
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have_state = match.group(1)
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if have_state is None or not conditional(want_state, have_state.strip()):
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failed_conditions.append('state ' + 'eq(%s)' % want_state)
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if want_tx_rate:
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match = re.search(r'%s (\d+)' % 'output rate', output[0], re.M)
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have_tx_rate = None
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if match:
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have_tx_rate = match.group(1)
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if have_tx_rate is None or not conditional(want_tx_rate, have_tx_rate.strip(), cast=int):
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failed_conditions.append('tx_rate ' + want_tx_rate)
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if want_rx_rate:
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match = re.search(r'%s (\d+)' % 'input rate', output[0], re.M)
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have_rx_rate = None
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if match:
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have_rx_rate = match.group(1)
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if have_rx_rate is None or not conditional(want_rx_rate, have_rx_rate.strip(), cast=int):
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failed_conditions.append('rx_rate ' + want_rx_rate)
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if want_neighbors:
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have_host = []
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have_port = []
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if have_neighbors is None:
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command = {'command': 'show lldp neighbors {}'.format(w['name']), 'output': 'text'}
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have_neighbors = run_commands(module, [command])
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if have_neighbors[0]:
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lines = have_neighbors[0].strip().split('\n')
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col = None
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for index, line in enumerate(lines):
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if re.search(r"^Port\s+Neighbor Device ID\s+Neighbor Port ID\s+TTL", line):
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col = index
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break
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if col and col < len(lines) - 1:
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for items in lines[col + 1:]:
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value = re.split(r'\s+', items)
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try:
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have_port.append(value[2])
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have_host.append(value[1])
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except IndexError:
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pass
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for item in want_neighbors:
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host = item.get('host')
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port = item.get('port')
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if host and host not in have_host:
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failed_conditions.append('host ' + host)
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if port and port not in have_port:
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failed_conditions.append('port ' + port)
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return failed_conditions
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def main():
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""" main entry point for module execution
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"""
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neighbors_spec = dict(
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host=dict(),
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port=dict()
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)
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element_spec = dict(
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name=dict(),
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description=dict(),
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speed=dict(),
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mtu=dict(),
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enabled=dict(default=True, type='bool'),
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tx_rate=dict(),
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rx_rate=dict(),
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neighbors=dict(type='list', elements='dict', options=neighbors_spec),
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delay=dict(default=10, type='int'),
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state=dict(default='present',
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choices=['present', 'absent', 'up', 'down'])
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)
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aggregate_spec = deepcopy(element_spec)
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aggregate_spec['name'] = dict(required=True)
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# remove default in aggregate spec, to handle common arguments
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remove_default_spec(aggregate_spec)
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argument_spec = dict(
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aggregate=dict(type='list', elements='dict', options=aggregate_spec),
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)
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argument_spec.update(element_spec)
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argument_spec.update(eos_argument_spec)
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required_one_of = [['name', 'aggregate']]
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mutually_exclusive = [['name', 'aggregate']]
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module = AnsibleModule(argument_spec=argument_spec,
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required_one_of=required_one_of,
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mutually_exclusive=mutually_exclusive,
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supports_check_mode=True)
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warnings = list()
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result = {'changed': False}
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if warnings:
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result['warnings'] = warnings
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want = map_params_to_obj(module)
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have = map_config_to_obj(module)
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commands = map_obj_to_commands((want, have), module)
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result['commands'] = commands
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if commands:
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commit = not module.check_mode
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response = load_config(module, commands, commit=commit)
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if response.get('diff') and module._diff:
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result['diff'] = {'prepared': response.get('diff')}
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result['session_name'] = response.get('session')
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result['changed'] = True
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failed_conditions = check_declarative_intent_params(module, want, result)
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if failed_conditions:
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msg = 'One or more conditional statements have not been satisfied'
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module.fail_json(msg=msg, failed_conditions=failed_conditions)
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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