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Add new module - junos_ping (#50711)

* WIP junos_ping

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Added junos_ping module

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Minor changes

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Minor changes - 2

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix CI

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Initial tests

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* WIP tests

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fix spaces

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fixed unit tests

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Removed unused print statements

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Removed unused print statements

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Update license template

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

* Fixed Review Comments

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>
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Nilashish Chakraborty 2019-01-29 15:36:12 +05:30 committed by GitHub
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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2019, Ansible by Red Hat, inc
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'network'}
DOCUMENTATION = """
---
module: junos_ping
short_description: Tests reachability using ping from devices running Juniper JUNOS
description:
- Tests reachability using ping from devices running Juniper JUNOS to a remote destination.
- Tested against Junos (17.3R1.10)
- For a general purpose network module, see the M(net_ping) module.
- For Windows targets, use the M(win_ping) module instead.
- For targets running Python, use the M(ping) module instead.
author:
- Nilashish Chakraborty (@nilashishc)
version_added: '2.8'
options:
dest:
description:
- The IP Address or hostname (resolvable by the device) of the remote node.
required: true
count:
description:
- Number of packets to send to check reachability.
type: int
default: 5
source:
description:
- The IP Address to use while sending the ping packet(s).
interface:
description:
- The source interface to use while sending the ping packet(s).
ttl:
description:
- The time-to-live value for the ICMP packet(s).
type: int
size:
description:
- Determines the size (in bytes) of the ping packet(s).
type: int
interval:
description:
- Determines the interval (in seconds) between consecutive pings.
type: int
state:
description:
- Determines if the expected result is success or fail.
choices: [ absent, present ]
default: present
notes:
- For a general purpose network module, see the M(net_ping) module.
- For Windows targets, use the M(win_ping) module instead.
- For targets running Python, use the M(ping) module instead.
extends_documentation_fragment: junos
"""
EXAMPLES = """
- name: Test reachability to 10.10.10.10
junos_ping:
dest: 10.10.10.10
- name: Test reachability to 10.20.20.20 using source and size set
junos_ping:
dest: 10.20.20.20
size: 1024
ttl: 128
- name: Test unreachability to 10.30.30.30 using interval
junos_ping:
dest: 10.30.30.30
interval: 3
state: absent
- name: Test reachability to 10.40.40.40 setting count and interface
junos_ping:
dest: 10.40.40.40
interface: fxp0
count: 20
size: 512
"""
RETURN = """
commands:
description: List of commands sent.
returned: always
type: list
sample: ["ping 10.8.38.44 count 10 source 10.8.38.38 ttl 128"]
packet_loss:
description: Percentage of packets lost.
returned: always
type: str
sample: "0%"
packets_rx:
description: Packets successfully received.
returned: always
type: int
sample: 20
packets_tx:
description: Packets successfully transmitted.
returned: always
type: int
sample: 20
rtt:
description: The round trip time (RTT) stats.
returned: when ping succeeds
type: dict
sample: {"avg": 2, "max": 8, "min": 1, "stddev": 24}
"""
import re
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.network.junos.junos import junos_argument_spec, get_connection
def main():
""" main entry point for module execution
"""
argument_spec = dict(
count=dict(type="int", default=5),
dest=dict(type="str", required=True),
source=dict(),
interface=dict(),
ttl=dict(type='int'),
size=dict(type='int'),
interval=dict(type='int'),
state=dict(type="str", choices=["absent", "present"], default="present"),
)
argument_spec.update(junos_argument_spec)
module = AnsibleModule(argument_spec=argument_spec)
count = module.params["count"]
dest = module.params["dest"]
source = module.params["source"]
size = module.params["size"]
ttl = module.params["ttl"]
interval = module.params["interval"]
interface = module.params['interface']
warnings = list()
results = {'changed': False}
if warnings:
results["warnings"] = warnings
results["commands"] = build_ping(dest, count, size, interval, source, ttl, interface)
conn = get_connection(module)
ping_results = conn.get(results["commands"])
rtt_info, rate_info = None, None
for line in ping_results.split("\n"):
if line.startswith('round-trip'):
rtt_info = line
if line.startswith('%s packets transmitted' % count):
rate_info = line
if rtt_info:
rtt = parse_rtt(rtt_info)
for k, v in rtt.items():
if rtt[k] is not None:
rtt[k] = float(v)
results["rtt"] = rtt
pkt_loss, rx, tx = parse_rate(rate_info)
results["packet_loss"] = str(pkt_loss) + "%"
results["packets_rx"] = int(rx)
results["packets_tx"] = int(tx)
validate_results(module, pkt_loss, results)
module.exit_json(**results)
def build_ping(dest, count, size=None, interval=None, source=None, ttl=None, interface=None):
cmd = "ping {0} count {1}".format(dest, str(count))
if source:
cmd += " source {0}".format(source)
if interface:
cmd += " interface {0}".format(interface)
if ttl:
cmd += " ttl {0}".format(str(ttl))
if size:
cmd += " size {0}".format(str(size))
if interval:
cmd += " interval {0}".format(str(interval))
return cmd
def parse_rate(rate_info):
rate_re = re.compile(
r"(?P<tx>\d*) packets transmitted,(?:\s*)(?P<rx>\d*) packets received,(?:\s*)(?P<pkt_loss>\d*)% packet loss")
rate = rate_re.match(rate_info)
return rate.group("pkt_loss"), rate.group("rx"), rate.group("tx")
def parse_rtt(rtt_info):
rtt_re = re.compile(
r"round-trip (?:.*)=(?:\s*)(?P<min>\d+\.\d+).(?:\d*)/(?P<avg>\d+\.\d+).(?:\d*)/(?P<max>\d*\.\d*).(?:\d*)/(?P<stddev>\d*\.\d*)")
rtt = rtt_re.match(rtt_info)
return rtt.groupdict()
def validate_results(module, loss, results):
state = module.params["state"]
if state == "present" and int(loss) == 100:
module.fail_json(msg="Ping failed unexpectedly", **results)
elif state == "absent" and int(loss) < 100:
module.fail_json(msg="Ping succeeded unexpectedly", **results)
if __name__ == "__main__":
main()

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PING 10.10.10.10 (10.10.10.10): 56 data bytes
64 bytes from 10.10.10.10: icmp_seq=0 ttl=64 time=18.041 ms
64 bytes from 10.10.10.10: icmp_seq=1 ttl=64 time=15.710 ms
--- 10.10.10.10 ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/stddev = 15.710/16.876/18.041/1.165 ms

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PING 10.10.10.11 (10.10.10.11): 56 data bytes
64 bytes from 10.10.10.11: icmp_seq=0 ttl=64 time=18.041 ms
64 bytes from 10.10.10.11: icmp_seq=1 ttl=64 time=15.710 ms
64 bytes from 10.10.10.11: icmp_seq=0 ttl=64 time=16.051 ms
64 bytes from 10.10.10.11: icmp_seq=0 ttl=64 time=17.024 ms
64 bytes from 10.10.10.11: icmp_seq=0 ttl=64 time=20.090 ms
--- 10.10.10.11 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 18.710/17.876/20.041/2.165 ms

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PING 10.10.10.20 (10.10.10.20): 56 data bytes
--- 10.10.10.20 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss

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# (c) 2016 Red Hat Inc.
#
# 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/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from units.compat.mock import patch, MagicMock
from ansible.modules.network.junos import junos_ping
from units.modules.utils import set_module_args
from .junos_module import TestJunosModule, load_fixture
class TestJunosPingModule(TestJunosModule):
module = junos_ping
def setUp(self):
super(TestJunosPingModule, self).setUp()
self.mock_get_connection = patch('ansible.modules.network.junos.junos_ping.get_connection')
self.get_connection = self.mock_get_connection.start()
self.conn = self.get_connection()
self.conn.get = MagicMock()
def tearDown(self):
super(TestJunosPingModule, self).tearDown()
self.mock_get_connection.stop()
def test_junos_ping_expected_success(self):
set_module_args(dict(count=2, dest="10.10.10.10"))
self.conn.get = MagicMock(return_value=load_fixture('junos_ping_ping_10.10.10.10_count_2', content='str'))
result = self.execute_module()
self.assertEqual(result['commands'], 'ping 10.10.10.10 count 2')
def test_junos_ping_expected_failure(self):
set_module_args(dict(count=4, dest="10.10.10.20", state="absent"))
self.conn.get = MagicMock(return_value=load_fixture('junos_ping_ping_10.10.10.20_count_4', content='str'))
result = self.execute_module()
self.assertEqual(result['commands'], 'ping 10.10.10.20 count 4')
def test_junos_ping_unexpected_success(self):
''' Test for successful pings when destination should not be reachable - FAIL. '''
set_module_args(dict(count=2, dest="10.10.10.10", state="absent"))
self.conn.get = MagicMock(return_value=load_fixture('junos_ping_ping_10.10.10.10_count_2', content='str'))
self.execute_module(failed=True)
def test_junos_ping_unexpected_failure(self):
''' Test for unsuccessful pings when destination should be reachable - FAIL. '''
set_module_args(dict(count=4, dest="10.10.10.20"))
self.conn.get = MagicMock(return_value=load_fixture('junos_ping_ping_10.10.10.20_count_4', content='str'))
self.execute_module(failed=True)
def test_junos_ping_failure_stats(self):
'''Test for asserting stats when ping fails'''
set_module_args(dict(count=4, dest="10.10.10.20"))
self.conn.get = MagicMock(return_value=load_fixture('junos_ping_ping_10.10.10.20_count_4', content='str'))
result = self.execute_module(failed=True)
self.assertEqual(result['packet_loss'], '100%')
self.assertEqual(result['packets_rx'], 0)
self.assertEqual(result['packets_tx'], 4)
def test_junos_ping_success_stats(self):
set_module_args(dict(count=2, dest="10.10.10.10"))
self.conn.get = MagicMock(return_value=load_fixture('junos_ping_ping_10.10.10.10_count_2', content='str'))
result = self.execute_module()
self.assertEqual(result['commands'], 'ping 10.10.10.10 count 2')
self.assertEqual(result['packet_loss'], '0%')
self.assertEqual(result['packets_rx'], 2)
self.assertEqual(result['packets_tx'], 2)
self.assertEqual(result['rtt']['min'], 15.71)
self.assertEqual(result['rtt']['avg'], 16.87)
self.assertEqual(result['rtt']['max'], 18.04)
self.assertEqual(result['rtt']['stddev'], 1.165)
def test_junos_ping_success_stats_with_options(self):
set_module_args(dict(count=5, size=512, interval=2, dest="10.10.10.11"))
self.conn.get = MagicMock(return_value=load_fixture('junos_ping_ping_10.10.10.11_count_5_size_512_interval_2', content='str'))
result = self.execute_module()
self.assertEqual(result['commands'], 'ping 10.10.10.11 count 5 size 512 interval 2')
self.assertEqual(result['packet_loss'], '0%')
self.assertEqual(result['packets_rx'], 5)
self.assertEqual(result['packets_tx'], 5)
self.assertEqual(result['rtt']['min'], 18.71)
self.assertEqual(result['rtt']['avg'], 17.87)
self.assertEqual(result['rtt']['max'], 20.04)
self.assertEqual(result['rtt']['stddev'], 2.165)