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community.general/plugins/modules/network/cloudengine/ce_static_route.py

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2020-03-09 10:11:07 +01:00
#!/usr/bin/python
# 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': 'community'}
DOCUMENTATION = '''
---
module: ce_static_route
short_description: Manages static route configuration on HUAWEI CloudEngine switches.
description:
- Manages the static routes on HUAWEI CloudEngine switches.
author: Yang yang (@QijunPan)
notes:
- If no vrf is supplied, vrf is set to default.
- If I(state=absent), the route will be removed, regardless of the non-required parameters.
- This module requires the netconf system service be enabled on the remote device being managed.
- Recommended connection is C(netconf).
- This module also works with C(local) connections for legacy playbooks.
options:
prefix:
description:
- Destination ip address of static route.
required: true
mask:
description:
- Destination ip mask of static route.
required: true
aftype:
description:
- Destination ip address family type of static route.
required: true
choices: ['v4','v6']
next_hop:
description:
- Next hop address of static route.
nhp_interface:
description:
- Next hop interface full name of static route.
vrf:
description:
- VPN instance of destination ip address.
destvrf:
description:
- VPN instance of next hop ip address.
tag:
description:
- Route tag value (numeric).
description:
description:
- Name of the route. Used with the name parameter on the CLI.
pref:
description:
- Preference or administrative difference of route (range 1-255).
state:
description:
- Specify desired state of the resource.
choices: ['present','absent']
default: present
'''
EXAMPLES = '''
- name: static route module test
hosts: cloudengine
connection: local
gather_facts: no
vars:
cli:
host: "{{ inventory_hostname }}"
port: "{{ ansible_ssh_port }}"
username: "{{ username }}"
password: "{{ password }}"
transport: cli
tasks:
- name: Config a ipv4 static route, next hop is an address and that it has the proper description
ce_static_route:
prefix: 2.1.1.2
mask: 24
next_hop: 3.1.1.2
description: 'Configured by Ansible'
aftype: v4
provider: "{{ cli }}"
- name: Config a ipv4 static route ,next hop is an interface and that it has the proper description
ce_static_route:
prefix: 2.1.1.2
mask: 24
next_hop: 10GE1/0/1
description: 'Configured by Ansible'
aftype: v4
provider: "{{ cli }}"
- name: Config a ipv6 static route, next hop is an address and that it has the proper description
ce_static_route:
prefix: fc00:0:0:2001::1
mask: 64
next_hop: fc00:0:0:2004::1
description: 'Configured by Ansible'
aftype: v6
provider: "{{ cli }}"
- name: Config a ipv4 static route, next hop is an interface and that it has the proper description
ce_static_route:
prefix: fc00:0:0:2001::1
mask: 64
next_hop: 10GE1/0/1
description: 'Configured by Ansible'
aftype: v6
provider: "{{ cli }}"
- name: Config a VRF and set ipv4 static route, next hop is an address and that it has the proper description
ce_static_route:
vrf: vpna
prefix: 2.1.1.2
mask: 24
next_hop: 3.1.1.2
description: 'Configured by Ansible'
aftype: v4
provider: "{{ cli }}"
'''
RETURN = '''
proposed:
description: k/v pairs of parameters passed into module
returned: always
type: dict
sample: {"next_hop": "3.3.3.3", "pref": "100",
"prefix": "192.168.20.642", "mask": "24", "description": "testing",
"vrf": "_public_"}
existing:
description: k/v pairs of existing switchport
returned: always
type: dict
sample: {}
end_state:
description: k/v pairs of switchport after module execution
returned: always
type: dict
sample: {"next_hop": "3.3.3.3", "pref": "100",
"prefix": "192.168.20.0", "mask": "24", "description": "testing",
"tag" : "null"}
updates:
description: command list sent to the device
returned: always
type: list
sample: ["ip route-static 192.168.20.0 255.255.255.0 3.3.3.3 preference 100 description testing"]
changed:
description: check to see if a change was made on the device
returned: always
type: bool
sample: true
'''
from xml.etree import ElementTree
from ansible.module_utils.basic import AnsibleModule
from ansible_collections.community.general.plugins.module_utils.network.cloudengine.ce import get_nc_config, set_nc_config, ce_argument_spec
CE_NC_GET_STATIC_ROUTE = """
<filter type="subtree">
<staticrt xmlns="http://www.huawei.com/netconf/vrp" content-version="1.0" format-version="1.0">
<staticrtbase>
<srRoutes>
<srRoute>
<vrfName></vrfName>
<afType></afType>
<topologyName></topologyName>
<prefix></prefix>
<maskLength></maskLength>
<ifName></ifName>
<destVrfName></destVrfName>
<nexthop></nexthop>
<description></description>
<preference></preference>
<tag></tag>
</srRoute>
</srRoutes>
</staticrtbase>
</staticrt>
</filter>
"""
CE_NC_GET_STATIC_ROUTE_ABSENT = """
<filter type="subtree">
<staticrt xmlns="http://www.huawei.com/netconf/vrp" content-version="1.0" format-version="1.0">
<staticrtbase>
<srRoutes>
<srRoute>
<vrfName></vrfName>
<afType></afType>
<topologyName></topologyName>
<prefix></prefix>
<maskLength></maskLength>
<ifName></ifName>
<destVrfName></destVrfName>
<nexthop></nexthop>
</srRoute>
</srRoutes>
</staticrtbase>
</staticrt>
</filter>
"""
CE_NC_SET_STATIC_ROUTE = """
<staticrt xmlns="http://www.huawei.com/netconf/vrp" content-version="1.0" format-version="1.0">
<staticrtbase>
<srRoutes>
<srRoute operation="merge">
<vrfName>%s</vrfName>
<afType>%s</afType>
<topologyName>base</topologyName>
<prefix>%s</prefix>
<maskLength>%s</maskLength>
<ifName>%s</ifName>
<destVrfName>%s</destVrfName>
<nexthop>%s</nexthop>%s%s%s
</srRoute>
</srRoutes>
</staticrtbase>
</staticrt>
"""
CE_NC_SET_DESCRIPTION = """
<description>%s</description>
"""
CE_NC_SET_PREFERENCE = """
<preference>%s</preference>
"""
CE_NC_SET_TAG = """
<tag>%s</tag>
"""
CE_NC_DELETE_STATIC_ROUTE = """
<staticrt xmlns="http://www.huawei.com/netconf/vrp" content-version="1.0" format-version="1.0">
<staticrtbase>
<srRoutes>
<srRoute operation="delete">
<vrfName>%s</vrfName>
<afType>%s</afType>
<topologyName>base</topologyName>
<prefix>%s</prefix>
<maskLength>%s</maskLength>
<ifName>%s</ifName>
<destVrfName>%s</destVrfName>
<nexthop>%s</nexthop>
</srRoute>
</srRoutes>
</staticrtbase>
</staticrt>
"""
def build_config_xml(xmlstr):
"""build config xml"""
return '<config> ' + xmlstr + ' </config>'
def is_valid_v4addr(addr):
"""check if ipv4 addr is valid"""
if addr.find('.') != -1:
addr_list = addr.split('.')
if len(addr_list) != 4:
return False
for each_num in addr_list:
if not each_num.isdigit():
return False
if int(each_num) > 255:
return False
return True
return False
def is_valid_v6addr(addr):
"""check if ipv6 addr is valid"""
if addr.find(':') != -1:
addr_list = addr.split(':')
# The IPv6 binary system has a length of 128 bits and is grouped by 16 bits.
# Each group is separated by a colon ":" and can be divided into 8 groups, each group being represented by 4 hexadecimal
if len(addr_list) > 8:
return False
# You can use a double colon "::" to represent a group of 0 or more consecutive 0s, but only once.
if addr.count('::') > 1:
return False
# if do not use '::', the length of address should not be less than 8.
if addr.count('::') == 0 and len(addr_list) < 8:
return False
for group in addr_list:
if group.strip() == '':
continue
try:
# Each group is represented in 4-digit hexadecimal
int(group, base=16)
except ValueError:
return False
return True
return False
def is_valid_tag(tag):
"""check if the tag is valid"""
if not tag.isdigit():
return False
if int(tag) < 1 or int(tag) > 4294967295:
return False
return True
def is_valid_preference(pref):
"""check if the preference is valid"""
if pref.isdigit():
return int(pref) > 0 and int(pref) < 256
else:
return False
def is_valid_description(description):
"""check if the description is valid"""
if description.find('?') != -1:
return False
if len(description) < 1 or len(description) > 255:
return False
return True
class StaticRoute(object):
"""static route module"""
def __init__(self, argument_spec, ):
self.spec = argument_spec
self.module = None
self.init_module()
# static route info
self.prefix = self.module.params['prefix']
self.mask = self.module.params['mask']
self.aftype = self.module.params['aftype']
self.next_hop = self.module.params['next_hop']
self.nhp_interface = self.module.params['nhp_interface']
if self.nhp_interface is None:
self.nhp_interface = "Invalid0"
self.tag = self.module.params['tag']
self.description = self.module.params['description']
self.state = self.module.params['state']
self.pref = self.module.params['pref']
# vpn instance info
self.vrf = self.module.params['vrf']
if self.vrf is None:
self.vrf = "_public_"
self.destvrf = self.module.params['destvrf']
if self.destvrf is None:
self.destvrf = "_public_"
# state
self.changed = False
self.updates_cmd = list()
self.results = dict()
self.proposed = dict()
self.existing = dict()
self.end_state = dict()
self.static_routes_info = dict()
def init_module(self):
"""init module"""
required_one_of = [["next_hop", "nhp_interface"]]
self.module = AnsibleModule(
argument_spec=self.spec, required_one_of=required_one_of, supports_check_mode=True)
def check_response(self, xml_str, xml_name):
"""check if response message is already succeed."""
if "<ok/>" not in xml_str:
self.module.fail_json(msg='Error: %s failed.' % xml_name)
def convert_len_to_mask(self, masklen):
"""convert mask length to ip address mask, i.e. 24 to 255.255.255.0"""
mask_int = ["0"] * 4
length = int(masklen)
if length > 32:
self.module.fail_json(msg='IPv4 ipaddress mask length is invalid')
if length < 8:
mask_int[0] = str(int((0xFF << (8 - length % 8)) & 0xFF))
if length >= 8:
mask_int[0] = '255'
mask_int[1] = str(int((0xFF << (16 - (length % 16))) & 0xFF))
if length >= 16:
mask_int[1] = '255'
mask_int[2] = str(int((0xFF << (24 - (length % 24))) & 0xFF))
if length >= 24:
mask_int[2] = '255'
mask_int[3] = str(int((0xFF << (32 - (length % 32))) & 0xFF))
if length == 32:
mask_int[3] = '255'
return '.'.join(mask_int)
def convert_ip_prefix(self):
"""convert prefix to real value i.e. 2.2.2.2/24 to 2.2.2.0/24"""
if self.aftype == "v4":
if self.prefix.find('.') == -1:
return False
if self.mask == '32':
return True
if self.mask == '0':
self.prefix = '0.0.0.0'
return True
addr_list = self.prefix.split('.')
length = len(addr_list)
if length > 4:
return False
for each_num in addr_list:
if not each_num.isdigit():
return False
if int(each_num) > 255:
return False
byte_len = 8
ip_len = int(self.mask) // byte_len
ip_bit = int(self.mask) % byte_len
else:
if self.prefix.find(':') == -1:
return False
if self.mask == '128':
return True
if self.mask == '0':
self.prefix = '::'
return True
addr_list = self.prefix.split(':')
length = len(addr_list)
if length > 6:
return False
byte_len = 16
ip_len = int(self.mask) // byte_len
ip_bit = int(self.mask) % byte_len
if self.aftype == "v4":
for i in range(ip_len + 1, length):
addr_list[i] = 0
else:
for i in range(length - ip_len, length):
addr_list[i] = 0
for j in range(0, byte_len - ip_bit):
if self.aftype == "v4":
addr_list[ip_len] = int(addr_list[ip_len]) & (0 << j)
else:
if addr_list[length - ip_len - 1] == "":
continue
addr_list[length - ip_len -
1] = '0x%s' % addr_list[length - ip_len - 1]
addr_list[length - ip_len -
1] = int(addr_list[length - ip_len - 1], 16) & (0 << j)
if self.aftype == "v4":
self.prefix = '%s.%s.%s.%s' % (addr_list[0], addr_list[1], addr_list[2], addr_list[3])
return True
else:
ipv6_addr_str = ""
for num in range(0, length - ip_len):
ipv6_addr_str += '%s:' % addr_list[num]
self.prefix = ipv6_addr_str
return True
def set_update_cmd(self):
"""set update command"""
if not self.changed:
return
if self.aftype == "v4":
aftype = "ip"
maskstr = self.convert_len_to_mask(self.mask)
else:
aftype = "ipv6"
maskstr = self.mask
if self.next_hop is None:
next_hop = ''
else:
next_hop = self.next_hop
if self.vrf == "_public_":
vrf = ''
else:
vrf = self.vrf
if self.destvrf == "_public_":
destvrf = ''
else:
destvrf = self.destvrf
if self.nhp_interface == "Invalid0":
nhp_interface = ''
else:
nhp_interface = self.nhp_interface
if self.state == "present":
if self.vrf != "_public_":
if self.destvrf != "_public_":
self.updates_cmd.append('%s route-static vpn-instance %s %s %s vpn-instance %s %s'
% (aftype, vrf, self.prefix, maskstr, destvrf, next_hop))
else:
self.updates_cmd.append('%s route-static vpn-instance %s %s %s %s %s'
% (aftype, vrf, self.prefix, maskstr, nhp_interface, next_hop))
elif self.destvrf != "_public_":
self.updates_cmd.append('%s route-static %s %s vpn-instance %s %s'
% (aftype, self.prefix, maskstr, self.destvrf, next_hop))
else:
self.updates_cmd.append('%s route-static %s %s %s %s'
% (aftype, self.prefix, maskstr, nhp_interface, next_hop))
if self.pref:
self.updates_cmd[0] += ' preference %s' % (self.pref)
if self.tag:
self.updates_cmd[0] += ' tag %s' % (self.tag)
if self.description:
self.updates_cmd[0] += ' description %s' % (self.description)
if self.state == "absent":
if self.vrf != "_public_":
if self.destvrf != "_public_":
self.updates_cmd.append('undo %s route-static vpn-instance %s %s %s vpn-instance %s %s'
% (aftype, vrf, self.prefix, maskstr, destvrf, next_hop))
else:
self.updates_cmd.append('undo %s route-static vpn-instance %s %s %s %s %s'
% (aftype, vrf, self.prefix, maskstr, nhp_interface, next_hop))
elif self.destvrf != "_public_":
self.updates_cmd.append('undo %s route-static %s %s vpn-instance %s %s'
% (aftype, self.prefix, maskstr, self.destvrf, self.next_hop))
else:
self.updates_cmd.append('undo %s route-static %s %s %s %s'
% (aftype, self.prefix, maskstr, nhp_interface, next_hop))
def operate_static_route(self, version, prefix, mask, nhp_interface, next_hop, vrf, destvrf, state):
"""operate ipv4 static route"""
description_xml = """\n"""
preference_xml = """\n"""
tag_xml = """\n"""
if next_hop is None:
next_hop = '0.0.0.0'
if nhp_interface is None:
nhp_interface = "Invalid0"
if vrf is None:
vpn_instance = "_public_"
else:
vpn_instance = vrf
if destvrf is None:
dest_vpn_instance = "_public_"
else:
dest_vpn_instance = destvrf
if self.description:
description_xml = CE_NC_SET_DESCRIPTION % self.description
if self.pref:
preference_xml = CE_NC_SET_PREFERENCE % self.pref
if self.tag:
tag_xml = CE_NC_SET_TAG % self.tag
if state == "present":
configxmlstr = CE_NC_SET_STATIC_ROUTE % (
vpn_instance, version, prefix, mask, nhp_interface,
dest_vpn_instance, next_hop, description_xml, preference_xml, tag_xml)
else:
configxmlstr = CE_NC_DELETE_STATIC_ROUTE % (
vpn_instance, version, prefix, mask, nhp_interface, dest_vpn_instance, next_hop)
conf_str = build_config_xml(configxmlstr)
recv_xml = set_nc_config(self.module, conf_str)
self.check_response(recv_xml, "OPERATE_STATIC_ROUTE")
def get_static_route(self, state):
"""get ipv4 static route"""
self.static_routes_info["sroute"] = list()
if state == 'absent':
getxmlstr = CE_NC_GET_STATIC_ROUTE_ABSENT
else:
getxmlstr = CE_NC_GET_STATIC_ROUTE
xml_str = get_nc_config(self.module, getxmlstr)
if 'data/' in xml_str:
return
xml_str = xml_str.replace('\r', '').replace('\n', '').\
replace('xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"', "").\
replace('xmlns="http://www.huawei.com/netconf/vrp"', "")
root = ElementTree.fromstring(xml_str)
static_routes = root.findall(
"staticrt/staticrtbase/srRoutes/srRoute")
if static_routes:
for static_route in static_routes:
static_info = dict()
for static_ele in static_route:
if static_ele.tag in ["vrfName", "afType", "topologyName",
"prefix", "maskLength", "destVrfName",
"nexthop", "ifName", "preference", "description"]:
static_info[
static_ele.tag] = static_ele.text
if static_ele.tag == "tag":
if static_ele.text is not None:
static_info["tag"] = static_ele.text
else:
static_info["tag"] = "None"
self.static_routes_info["sroute"].append(static_info)
def check_params(self):
"""check all input params"""
# check prefix and mask
if not self.mask.isdigit():
self.module.fail_json(msg='Error: Mask is invalid.')
# ipv4 check
if self.aftype == "v4":
if int(self.mask) > 32 or int(self.mask) < 0:
self.module.fail_json(
msg='Error: Ipv4 mask must be an integer between 1 and 32.')
# next_hop check
if self.next_hop:
if not is_valid_v4addr(self.next_hop):
self.module.fail_json(
msg='Error: The %s is not a valid address' % self.next_hop)
# ipv6 check
if self.aftype == "v6":
if int(self.mask) > 128 or int(self.mask) < 0:
self.module.fail_json(
msg='Error: Ipv6 mask must be an integer between 1 and 128.')
if self.next_hop:
if not is_valid_v6addr(self.next_hop):
self.module.fail_json(
msg='Error: The %s is not a valid address' % self.next_hop)
# description check
if self.description:
if not is_valid_description(self.description):
self.module.fail_json(
msg='Error: Dsecription length should be 1 - 35, and can not contain "?".')
# tag check
if self.tag:
if not is_valid_tag(self.tag):
self.module.fail_json(
msg='Error: Tag should be integer 1 - 4294967295.')
# preference check
if self.pref:
if not is_valid_preference(self.pref):
self.module.fail_json(
msg='Error: Preference should be integer 1 - 255.')
if self.nhp_interface != "Invalid0" and self.destvrf != "_public_":
self.module.fail_json(
msg='Error: Destination vrf dose no support next hop is interface.')
# convert prefix
if not self.convert_ip_prefix():
self.module.fail_json(
msg='Error: The %s is not a valid address' % self.prefix)
def set_ip_static_route(self):
"""set ip static route"""
if not self.changed:
return
version = None
if self.aftype == "v4":
version = "ipv4unicast"
else:
version = "ipv6unicast"
self.operate_static_route(version, self.prefix, self.mask, self.nhp_interface,
self.next_hop, self.vrf, self.destvrf, self.state)
def is_prefix_exist(self, static_route, version):
"""is prefix mask nex_thop exist"""
if static_route is None:
return False
if self.next_hop and self.nhp_interface:
return static_route["prefix"].lower() == self.prefix.lower() \
and static_route["maskLength"] == self.mask \
and static_route["afType"] == version \
and static_route["ifName"].lower() == self.nhp_interface.lower() \
and static_route["nexthop"].lower() == self.next_hop.lower()
if self.next_hop and not self.nhp_interface:
return static_route["prefix"].lower() == self.prefix.lower() \
and static_route["maskLength"] == self.mask \
and static_route["afType"] == version \
and static_route["nexthop"].lower() == self.next_hop.lower()
if not self.next_hop and self.nhp_interface:
return static_route["prefix"].lower() == self.prefix.lower() \
and static_route["maskLength"] == self.mask \
and static_route["afType"] == version \
and static_route["ifName"].lower() == self.nhp_interface.lower()
def get_ip_static_route(self):
"""get ip static route"""
if self.aftype == "v4":
version = "ipv4unicast"
else:
version = "ipv6unicast"
change = False
self.get_static_route(self.state)
if self.state == 'present':
for static_route in self.static_routes_info["sroute"]:
if self.is_prefix_exist(static_route, version):
if self.vrf:
if static_route["vrfName"] != self.vrf:
change = True
if self.tag:
if static_route["tag"] != self.tag:
change = True
if self.destvrf:
if static_route["destVrfName"] != self.destvrf:
change = True
if self.description:
if static_route["description"] != self.description:
change = True
if self.pref:
if static_route["preference"] != self.pref:
change = True
if self.nhp_interface:
if static_route["ifName"].lower() != self.nhp_interface.lower():
change = True
if self.next_hop:
if static_route["nexthop"].lower() != self.next_hop.lower():
change = True
return change
else:
continue
change = True
else:
for static_route in self.static_routes_info["sroute"]:
if static_route["nexthop"] and self.next_hop:
if static_route["prefix"].lower() == self.prefix.lower() \
and static_route["maskLength"] == self.mask \
and static_route["nexthop"].lower() == self.next_hop.lower() \
and static_route["afType"] == version:
change = True
return change
if static_route["ifName"] and self.nhp_interface:
if static_route["prefix"].lower() == self.prefix.lower() \
and static_route["maskLength"] == self.mask \
and static_route["ifName"].lower() == self.nhp_interface.lower() \
and static_route["afType"] == version:
change = True
return change
else:
continue
change = False
return change
def get_proposed(self):
"""get proposed information"""
self.proposed['prefix'] = self.prefix
self.proposed['mask'] = self.mask
self.proposed['afType'] = self.aftype
self.proposed['next_hop'] = self.next_hop
self.proposed['ifName'] = self.nhp_interface
self.proposed['vrfName'] = self.vrf
self.proposed['destVrfName'] = self.destvrf
if self.tag:
self.proposed['tag'] = self.tag
if self.description:
self.proposed['description'] = self.description
if self.pref is None:
self.proposed['preference'] = 60
else:
self.proposed['preference'] = self.pref
self.proposed['state'] = self.state
def get_existing(self):
"""get existing information"""
change = self.get_ip_static_route()
self.existing['sroute'] = self.static_routes_info["sroute"]
self.changed = bool(change)
def get_end_state(self):
"""get end state information"""
self.get_static_route(self.state)
self.end_state['sroute'] = self.static_routes_info["sroute"]
if self.end_state == self.existing:
self.changed = False
def work(self):
"""worker"""
self.check_params()
self.get_existing()
self.get_proposed()
self.set_ip_static_route()
self.set_update_cmd()
self.get_end_state()
self.results['changed'] = self.changed
self.results['proposed'] = self.proposed
self.results['existing'] = self.existing
self.results['end_state'] = self.end_state
if self.changed:
self.results['updates'] = self.updates_cmd
else:
self.results['updates'] = list()
self.module.exit_json(**self.results)
def main():
"""main"""
argument_spec = dict(
prefix=dict(required=True, type='str'),
mask=dict(required=True, type='str'),
aftype=dict(choices=['v4', 'v6'], required=True),
next_hop=dict(required=False, type='str'),
nhp_interface=dict(required=False, type='str'),
vrf=dict(required=False, type='str'),
destvrf=dict(required=False, type='str'),
tag=dict(required=False, type='str'),
description=dict(required=False, type='str'),
pref=dict(required=False, type='str'),
state=dict(choices=['absent', 'present'],
default='present', required=False),
)
argument_spec.update(ce_argument_spec)
interface = StaticRoute(argument_spec)
interface.work()
if __name__ == '__main__':
main()
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