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###############################################################################
# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
# and others #
# #
# All rights reserved. This program and the accompanying materials #
# are made available under the terms of the Apache License, Version 2.0 #
# which accompanies this distribution, and is available at #
# http://www.apache.org/licenses/LICENSE-2.0 #
###############################################################################
import re
from discover.fetchers.cli.cli_access import CliAccess
from utils.inventory_mgr import InventoryMgr
class CliFetchVserviceVnics(CliAccess):
def __init__(self):
super().__init__()
self.inv = InventoryMgr()
self.if_header = re.compile('^[-]?(\S+)\s+(.*)$')
self.regexps = [
{'name': 'mac_address', 're': '^.*\sHWaddr\s(\S+)(\s.*)?$'},
{'name': 'mac_address', 're': '^.*\sether\s(\S+)(\s.*)?$'},
{'name': 'IP Address', 're': '^\s*inet addr:(\S+)\s.*$'},
{'name': 'IP Address', 're': '^\s*inet ([0-9.]+)\s.*$'},
{'name': 'netmask', 're': '^.*\sMask:\s?([0-9.]+)(\s.*)?$'},
{'name': 'netmask', 're': '^.*\snetmask\s([0-9.]+)(\s.*)?$'},
{'name': 'IPv6 Address',
're': '^\s*inet6 addr: ?\s*([0-9a-f:/]+)(\s.*)?$'},
{'name': 'IPv6 Address',
're': '^\s*inet6 \s*([0-9a-f:/]+)(\s.*)?$'}
]
def get(self, host_id):
host = self.inv.get_by_id(self.get_env(), host_id)
if not host:
self.log.error("host not found: " + host_id)
return []
if "host_type" not in host:
self.log.error("host does not have host_type: " + host_id +
", host: " + str(host))
return []
if "Network" not in host["host_type"]:
return []
lines = self.run_fetch_lines("ip netns", host_id)
ret = []
for l in [l for l in lines
if l.startswith("qdhcp") or l.startswith("qrouter")]:
service = l.strip()
service = service if ' ' not in service \
else service[:service.index(' ')]
ret.extend(self.handle_service(host_id, service))
return ret
def handle_service(self, host, service, enable_cache=True):
cmd = "ip netns exec " + service + " ifconfig"
lines = self.run_fetch_lines(cmd, host, enable_cache)
interfaces = []
current = None
for line in lines:
matches = self.if_header.match(line)
if matches:
if current:
self.set_interface_data(current)
name = matches.group(1).strip(":")
# ignore 'lo' interface
if name == 'lo':
current = None
else:
line_remainder = matches.group(2)
vservice_id = host + "-" + service
current = {
"id": host + "-" + name,
"type": "vnic",
"vnic_type": "vservice_vnic",
"host": host,
"name": name,
"master_parent_type": "vservice",
"master_parent_id": vservice_id,
"parent_type": "vnics_folder",
"parent_id": vservice_id + "-vnics",
"parent_text": "vNICs",
"lines": []
}
interfaces.append(current)
self.handle_line(current, line_remainder)
else:
if current:
self.handle_line(current, line)
if current:
self.set_interface_data(current)
return interfaces
def handle_line(self, interface, line):
self.find_matching_regexps(interface, line, self.regexps)
interface["lines"].append(line.strip())
def set_interface_data(self, interface):
if not interface or 'IP Address' not in interface or 'netmask' not in interface:
return
interface["data"] = "\n".join(interface.pop("lines", None))
interface["cidr"] = self.get_cidr_for_vnic(interface)
network = self.inv.get_by_field(self.get_env(), "network", "cidrs",
interface["cidr"], get_single=True)
if not network:
return
interface["network"] = network["id"]
# set network for the vservice, to check network on clique creation
vservice = self.inv.get_by_id(self.get_env(),
interface["master_parent_id"])
network_id = network["id"]
if "network" not in vservice:
vservice["network"] = list()
if network_id not in vservice["network"]:
vservice["network"].append(network_id)
self.inv.set(vservice)
# find CIDR string by IP address and netmask
def get_cidr_for_vnic(self, vnic):
if "IP Address" not in vnic:
vnic["IP Address"] = "No IP Address"
return "No IP Address"
ipaddr = vnic["IP Address"].split('.')
netmask = vnic["netmask"].split('.')
# calculate network start
net_start = []
for pos in range(0, 4):
net_start.append(str(int(ipaddr[pos]) & int(netmask[pos])))
cidr_string = '.'.join(net_start) + '/'
cidr_string = cidr_string + self.get_net_size(netmask)
return cidr_string
def get_net_size(self, netmask):
binary_str = ''
for octet in netmask:
binary_str += bin(int(octet))[2:].zfill(8)
return str(len(binary_str.rstrip('0')))
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