313 lines
12 KiB
Python
313 lines
12 KiB
Python
#!/usr/bin/env python3
|
|
|
|
# network.py - PVC client function library, Network fuctions
|
|
# Part of the Parallel Virtual Cluster (PVC) system
|
|
#
|
|
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
|
#
|
|
# This program 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.
|
|
#
|
|
# This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
|
|
#
|
|
###############################################################################
|
|
|
|
import os
|
|
import socket
|
|
import time
|
|
import uuid
|
|
import re
|
|
import tempfile
|
|
import subprocess
|
|
import difflib
|
|
import colorama
|
|
import click
|
|
import lxml.objectify
|
|
import configparser
|
|
import kazoo.client
|
|
|
|
import client_lib.ansiiprint as ansiiprint
|
|
import client_lib.zkhandler as zkhandler
|
|
import client_lib.common as common
|
|
|
|
#
|
|
# Cluster search functions
|
|
#
|
|
def getClusterNetworkList(zk_conn):
|
|
# Get a list of VNIs by listing the children of /networks
|
|
vni_list = zk_conn.get_children('/networks')
|
|
description_list = []
|
|
# For each VNI, get the corresponding description from the data
|
|
for vni in vni_list:
|
|
description_list.append(zk_conn.get('/networks/{}'.format(vni))[0].decode('ascii'))
|
|
return vni_list, description_list
|
|
|
|
def searchClusterByVNI(zk_conn, vni):
|
|
try:
|
|
# Get the lists
|
|
vni_list, description_list = getClusterNetworkList(zk_conn)
|
|
# We're looking for UUID, so find that element ID
|
|
index = vni_list.index(vni)
|
|
# Get the name_list element at that index
|
|
description = description_list[index]
|
|
except ValueError:
|
|
# We didn't find anything
|
|
return None
|
|
|
|
return description
|
|
|
|
def searchClusterByDescription(zk_conn, description):
|
|
try:
|
|
# Get the lists
|
|
vni_list, description_list = getClusterNetworkList(zk_conn)
|
|
# We're looking for name, so find that element ID
|
|
index = description_list.index(description)
|
|
# Get the uuid_list element at that index
|
|
vni = vni_list[index]
|
|
except ValueError:
|
|
# We didn't find anything
|
|
return None
|
|
|
|
return vni
|
|
|
|
def getNetworkVNI(zk_conn, network):
|
|
# Validate and obtain alternate passed value
|
|
if network.isdigit():
|
|
net_description = searchClusterByVNI(zk_conn, network)
|
|
net_vni = searchClusterByDescription(zk_conn, net_description)
|
|
else:
|
|
net_vni = searchClusterByDescription(zk_conn, network)
|
|
net_description = searchClusterByVNI(zk_conn, net_vni)
|
|
|
|
return net_vni
|
|
|
|
def getNetworkDescription(zk_conn, network):
|
|
# Validate and obtain alternate passed value
|
|
if network.isdigit():
|
|
net_description = searchClusterByVNI(zk_conn, network)
|
|
net_vni = searchClusterByDescription(zk_conn, net_description)
|
|
else:
|
|
net_vni = searchClusterByDescription(zk_conn, network)
|
|
net_description = searchClusterByVNI(zk_conn, net_vni)
|
|
|
|
return net_description
|
|
|
|
def getNetworkDHCPReservations(zk_conn, vni):
|
|
n_dhcp_reservations = zk_conn.get_children('/networks/{}/dhcp_reservations'.format(vni))
|
|
return None
|
|
|
|
def getNetworkFirewallRules(zk_conn, vni):
|
|
n_firewall_rules = zk_conn.get_children('/networks/{}/firewall_rules'.format(vni))
|
|
return None
|
|
|
|
def getNetworkInformation(zk_conn, vni):
|
|
# Obtain basic information
|
|
description = zk_conn.get('/networks/{}'.format(vni))[0].decode('ascii')
|
|
ip_network = zk_conn.get('/networks/{}/ip_network'.format(vni))[0].decode('ascii')
|
|
ip_gateway = zk_conn.get('/networks/{}/ip_gateway'.format(vni))[0].decode('ascii')
|
|
dhcp_flag = zk_conn.get('/networks/{}/dhcp_flag'.format(vni))[0].decode('ascii')
|
|
|
|
# Add a human-friendly space
|
|
return description, ip_network, ip_gateway, dhcp_flag
|
|
|
|
def formatNetworkInformation(zk_conn, vni, long_output):
|
|
description, ip_network, ip_gateway, dhcp_flag = getNetworkInformation(zk_conn, vni)
|
|
|
|
# Format a nice output: do this line-by-line then concat the elements at the end
|
|
ainformation = []
|
|
ainformation.append('{}Virtual network information:{}'.format(ansiiprint.bold(), ansiiprint.end()))
|
|
ainformation.append('')
|
|
# Basic information
|
|
ainformation.append('{}VNI:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), vni))
|
|
ainformation.append('{}Description:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), description))
|
|
ainformation.append('{}IP network:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), ip_network))
|
|
ainformation.append('{}IP gateway:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), ip_gateway))
|
|
ainformation.append('{}DHCP enabled:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dhcp_flag))
|
|
|
|
if long_output:
|
|
dhcp_reservations = getNetworkDHCPReservations(zk_conn, vni)
|
|
if dhcp_reservations:
|
|
ainformation.append('')
|
|
ainformation.append('{}Client DHCP reservations:{}'.format(ansiiprint.bold(), ansiiprint.end()))
|
|
ainformation.append('')
|
|
|
|
firewall_rules = getNetworkFirewallRules(zk_conn, vni)
|
|
if firewall_rules:
|
|
ainformation.append('')
|
|
ainformation.append('{}Network firewall rules:{}'.format(ansiiprint.bold(), ansiiprint.end()))
|
|
ainformation.append('')
|
|
|
|
# Join it all together
|
|
information = '\n'.join(ainformation)
|
|
return information
|
|
|
|
#
|
|
# Direct functions
|
|
#
|
|
def add_network(zk_conn, vni, description, ip_network, ip_gateway, dhcp_flag):
|
|
if description == '':
|
|
description = vni
|
|
|
|
# Check if a network with this VNI already exists
|
|
if zk_conn.exists('/networks/{}'.format(vni)):
|
|
return False, 'ERROR: A network with VNI {} already exists!'.format(vni)
|
|
|
|
# Add the new network to Zookeeper
|
|
transaction = zk_conn.transaction()
|
|
transaction.create('/networks/{}'.format(vni), description.encode('ascii'))
|
|
transaction.create('/networks/{}/ip_network'.format(vni), ip_network.encode('ascii'))
|
|
transaction.create('/networks/{}/ip_gateway'.format(vni), ip_gateway.encode('ascii'))
|
|
transaction.create('/networks/{}/dhcp_flag'.format(vni), str(dhcp_flag).encode('ascii'))
|
|
transaction.create('/networks/{}/dhcp_reservations'.format(vni), ''.encode('ascii'))
|
|
transaction.create('/networks/{}/firewall_rules'.format(vni), ''.encode('ascii'))
|
|
results = transaction.commit()
|
|
|
|
return True, 'Network "{}" added successfully!'.format(description)
|
|
|
|
def modify_network(zk_conn, vni, **parameters):
|
|
# Add the new network to Zookeeper
|
|
transaction = zk_conn.transaction()
|
|
if parameters['description'] != None:
|
|
transaction.set_data('/networks/{}'.format(vni), parameters['description'].encode('ascii'))
|
|
if parameters['ip_network'] != None:
|
|
transaction.set_data('/networks/{}/ip_network'.format(vni), parameters['ip_network'].encode('ascii'))
|
|
if parameters['ip_gateway'] != None:
|
|
transaction.set_data('/networks/{}/ip_gateway'.format(vni), parameters['ip_gateway'].encode('ascii'))
|
|
if parameters['dhcp_flag'] != None:
|
|
transaction.set_data('/networks/{}/dhcp_flag'.format(vni), str(parameters['dhcp_flag']).encode('ascii'))
|
|
results = transaction.commit()
|
|
|
|
return True, 'Network "{}" modified successfully!'.format(vni)
|
|
|
|
def remove_network(zk_conn, network):
|
|
# Validate and obtain alternate passed value
|
|
vni = getNetworkVNI(zk_conn, network)
|
|
description = getNetworkDescription(zk_conn, network)
|
|
if not vni:
|
|
return False, 'ERROR: Could not find network "{}" in the cluster!'.format(network)
|
|
|
|
# Delete the configuration
|
|
try:
|
|
zk_conn.delete('/networks/{}'.format(vni), recursive=True)
|
|
except:
|
|
pass
|
|
|
|
return True, 'Network "{}" removed successfully!'.format(description)
|
|
|
|
def get_info(zk_conn, network, long_output):
|
|
# Validate and obtain alternate passed value
|
|
net_vni = getNetworkVNI(zk_conn, network)
|
|
if net_vni == None:
|
|
return False, 'ERROR: Could not find network "{}" in the cluster!'.format(network)
|
|
|
|
information = formatNetworkInformation(zk_conn, net_vni, long_output)
|
|
click.echo(information)
|
|
click.echo('')
|
|
|
|
return True, ''
|
|
|
|
def get_list(zk_conn, limit):
|
|
net_list = []
|
|
full_net_list = zk_conn.get_children('/networks')
|
|
for net in full_net_list:
|
|
description = zkhandler.readdata(zk_conn, '/networks/{}'.format(net))
|
|
if limit != None:
|
|
try:
|
|
if not re.match(limit, net) or not re.match(limit, description):
|
|
continue
|
|
except Exception as e:
|
|
return False, 'Regex Error: {}'.format(e)
|
|
net_list.append(net)
|
|
|
|
net_list_output = []
|
|
description = {}
|
|
ip_network = {}
|
|
ip_gateway = {}
|
|
dhcp_flag = {}
|
|
|
|
# Gather information for printing
|
|
for net in net_list:
|
|
# get info
|
|
description[net], ip_network[net], ip_gateway[net], dhcp_flag[net] = getNetworkInformation(zk_conn, net)
|
|
|
|
# Determine optimal column widths
|
|
# Dynamic columns: node_name, hypervisor, migrated
|
|
net_vni_length = 5
|
|
net_description_length = 13
|
|
net_ip_network_length = 12
|
|
net_ip_gateway_length = 9
|
|
for net in net_list:
|
|
# vni column
|
|
_net_vni_length = len(net) + 1
|
|
if _net_vni_length > net_vni_length:
|
|
net_vni_length = _net_vni_length
|
|
# description column
|
|
_net_description_length = len(description[net]) + 1
|
|
if _net_description_length > net_description_length:
|
|
net_description_length = _net_description_length
|
|
# ip_network column
|
|
_net_ip_network_length = len(ip_network[net]) + 1
|
|
if _net_ip_network_length > net_ip_network_length:
|
|
net_ip_network_length = _net_ip_network_length
|
|
# ip_gateway column
|
|
_net_ip_gateway_length = len(ip_gateway[net]) + 1
|
|
if _net_ip_gateway_length > net_ip_gateway_length:
|
|
net_ip_gateway_length = _net_ip_gateway_length
|
|
|
|
# Format the string (header)
|
|
net_list_output_header = '{bold}\
|
|
{net_vni: <{net_vni_length}} \
|
|
{net_description: <{net_description_length}} \
|
|
{net_ip_network: <{net_ip_network_length}} \
|
|
{net_ip_gateway: <{net_ip_gateway_length}} \
|
|
{net_dhcp_flag: <8}\
|
|
{end_bold}'.format(
|
|
bold=ansiiprint.bold(),
|
|
end_bold=ansiiprint.end(),
|
|
net_vni_length=net_vni_length,
|
|
net_description_length=net_description_length,
|
|
net_ip_network_length=net_ip_network_length,
|
|
net_ip_gateway_length=net_ip_gateway_length,
|
|
net_vni='VNI',
|
|
net_description='Description',
|
|
net_ip_network='Network',
|
|
net_ip_gateway='Gateway',
|
|
net_dhcp_flag='DHCP'
|
|
)
|
|
|
|
for net in net_list:
|
|
net_list_output.append(
|
|
'{bold}\
|
|
{net_vni: <{net_vni_length}} \
|
|
{net_description: <{net_description_length}} \
|
|
{net_ip_network: <{net_ip_network_length}} \
|
|
{net_ip_gateway: <{net_ip_gateway_length}} \
|
|
{net_dhcp_flag: <8}\
|
|
{end_bold}'.format(
|
|
bold='',
|
|
end_bold='',
|
|
net_vni_length=net_vni_length,
|
|
net_description_length=net_description_length,
|
|
net_ip_network_length=net_ip_network_length,
|
|
net_ip_gateway_length=net_ip_gateway_length,
|
|
net_vni=net,
|
|
net_description=description[net],
|
|
net_ip_network=ip_network[net],
|
|
net_ip_gateway=ip_gateway[net],
|
|
net_dhcp_flag=dhcp_flag[net]
|
|
)
|
|
)
|
|
|
|
click.echo(net_list_output_header)
|
|
click.echo('\n'.join(sorted(net_list_output)))
|
|
|
|
return True, ''
|