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Convert network.py to new ZK schema handler

This commit is contained in:
Joshua Boniface 2021-06-12 18:40:25 -04:00
parent f071343333
commit 0a162b304a
1 changed files with 96 additions and 100 deletions
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192
daemon-common/network.py
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@ -27,11 +27,11 @@ import re
#
def getClusterNetworkList(zkhandler):
# Get a list of VNIs by listing the children of /networks
vni_list = zkhandler.children('/networks')
vni_list = zkhandler.children('base.network')
description_list = []
# For each VNI, get the corresponding description from the data
for vni in vni_list:
description_list.append(zkhandler.read('/networks/{}'.format(vni)))
description_list.append(zkhandler.read(('network', vni)))
return vni_list, description_list
@ -91,14 +91,14 @@ def getNetworkDescription(zkhandler, network):
def getNetworkDHCPLeases(zkhandler, vni):
# Get a list of DHCP leases by listing the children of /networks/<vni>/dhcp4_leases
dhcp4_leases = zkhandler.children('/networks/{}/dhcp4_leases'.format(vni))
return sorted(dhcp4_leases)
leases = zkhandler.children(('network.lease', vni))
return sorted(leases)
def getNetworkDHCPReservations(zkhandler, vni):
# Get a list of DHCP reservations by listing the children of /networks/<vni>/dhcp4_reservations
dhcp4_reservations = zkhandler.children('/networks/{}/dhcp4_reservations'.format(vni))
return sorted(dhcp4_reservations)
reservations = zkhandler.children(('network.reservation', vni))
return sorted(reservations)
def getNetworkACLs(zkhandler, vni, _direction):
@ -110,32 +110,32 @@ def getNetworkACLs(zkhandler, vni, _direction):
full_acl_list = []
for direction in directions:
unordered_acl_list = zkhandler.children('/networks/{}/firewall_rules/{}'.format(vni, direction))
unordered_acl_list = zkhandler.children((f'network.rules.{direction}', vni))
ordered_acls = dict()
for acl in unordered_acl_list:
order = zkhandler.read('/networks/{}/firewall_rules/{}/{}/order'.format(vni, direction, acl))
order = zkhandler.read((f'network.rule.{direction}', vni, 'rule.order', acl))
ordered_acls[order] = acl
for order in sorted(ordered_acls.keys()):
rule = zkhandler.read('/networks/{}/firewall_rules/{}/{}/rule'.format(vni, direction, acl))
rule = zkhandler.read((f'network.rule.{direction}', vni, 'rule.rule', acl))
full_acl_list.append({'direction': direction, 'order': int(order), 'description': ordered_acls[order], 'rule': rule})
return full_acl_list
def getNetworkInformation(zkhandler, vni):
description = zkhandler.read('/networks/{}'.format(vni))
nettype = zkhandler.read('/networks/{}/nettype'.format(vni))
domain = zkhandler.read('/networks/{}/domain'.format(vni))
name_servers = zkhandler.read('/networks/{}/name_servers'.format(vni))
ip6_network = zkhandler.read('/networks/{}/ip6_network'.format(vni))
ip6_gateway = zkhandler.read('/networks/{}/ip6_gateway'.format(vni))
dhcp6_flag = zkhandler.read('/networks/{}/dhcp6_flag'.format(vni))
ip4_network = zkhandler.read('/networks/{}/ip4_network'.format(vni))
ip4_gateway = zkhandler.read('/networks/{}/ip4_gateway'.format(vni))
dhcp4_flag = zkhandler.read('/networks/{}/dhcp4_flag'.format(vni))
dhcp4_start = zkhandler.read('/networks/{}/dhcp4_start'.format(vni))
dhcp4_end = zkhandler.read('/networks/{}/dhcp4_end'.format(vni))
description = zkhandler.read(('network', vni))
nettype = zkhandler.read(('network.type', vni))
domain = zkhandler.read(('network.domain', vni))
name_servers = zkhandler.read(('network.nameservers', vni))
ip6_network = zkhandler.read(('network.ip6.network', vni))
ip6_gateway = zkhandler.read(('network.ip6.gateway', vni))
dhcp6_flag = zkhandler.read(('network.ip6.dhcp', vni))
ip4_network = zkhandler.read(('network.ip4.network', vni))
ip4_gateway = zkhandler.read(('network.ip4.gateway', vni))
dhcp4_flag = zkhandler.read(('network.ip4.dhcp', vni))
dhcp4_start = zkhandler.read(('network.ip4.dhcp_start', vni))
dhcp4_end = zkhandler.read(('network.ip4.dhcp_end', vni))
# Construct a data structure to represent the data
network_information = {
@ -162,17 +162,17 @@ def getNetworkInformation(zkhandler, vni):
def getDHCPLeaseInformation(zkhandler, vni, mac_address):
# Check whether this is a dynamic or static lease
if zkhandler.exists('/networks/{}/dhcp4_leases/{}'.format(vni, mac_address)):
type_key = 'dhcp4_leases'
elif zkhandler.exists('/networks/{}/dhcp4_reservations/{}'.format(vni, mac_address)):
type_key = 'dhcp4_reservations'
if zkhandler.exists(('network.lease', vni, 'lease', mac_address)):
type_key = 'lease'
if zkhandler.exists(('network.reservation', vni, 'reservation', mac_address)):
type_key = 'reservation'
else:
return {}
hostname = zkhandler.read('/networks/{}/{}/{}/hostname'.format(vni, type_key, mac_address))
ip4_address = zkhandler.read('/networks/{}/{}/{}/ipaddr'.format(vni, type_key, mac_address))
hostname = zkhandler.read((f'network.{type_key}', vni, f'{type_key}', mac_address))
ip4_address = zkhandler.read((f'network.{type_key}', vni, f'{type_key}.ip', mac_address))
if type_key == 'dhcp4_leases':
timestamp = zkhandler.read('/networks/{}/{}/{}/expiry'.format(vni, type_key, mac_address))
timestamp = zkhandler.read((f'network.{type_key}', vni, f'{type_key}.expiry', mac_address))
else:
timestamp = 'static'
@ -186,14 +186,14 @@ def getDHCPLeaseInformation(zkhandler, vni, mac_address):
return lease_information
def getACLInformation(zkhandler, vni, direction, description):
order = zkhandler.read('/networks/{}/firewall_rules/{}/{}/order'.format(vni, direction, description))
rule = zkhandler.read('/networks/{}/firewall_rules/{}/{}/rule'.format(vni, direction, description))
def getACLInformation(zkhandler, vni, direction, acl):
order = zkhandler.read((f'network.rule.{direction}', vni, 'rule.order', acl))
rule = zkhandler.read((f'network.rule.{direction}', vni, 'rule.rule', acl))
# Construct a data structure to represent the data
acl_information = {
'order': order,
'description': description,
'description': acl,
'rule': rule,
'direction': direction
}
@ -201,12 +201,7 @@ def getACLInformation(zkhandler, vni, direction, description):
def isValidMAC(macaddr):
allowed = re.compile(r"""
(
^([0-9A-F]{2}[:]){5}([0-9A-F]{2})$
)
""",
re.VERBOSE | re.IGNORECASE)
allowed = re.compile(r'(^([0-9A-F]{2}[:]){5}([0-9A-F]{2})$)', re.VERBOSE | re.IGNORECASE)
if allowed.match(macaddr):
return True
@ -239,10 +234,11 @@ def add_network(zkhandler, vni, description, nettype,
return False, 'ERROR: DHCPv4 start and end addresses are required for a DHCPv4-enabled network.'
# Check if a network with this VNI or description already exists
if zkhandler.exists('/networks/{}'.format(vni)):
if zkhandler.exists(('network', vni)):
return False, 'ERROR: A network with VNI "{}" already exists!'.format(vni)
for network in zkhandler.children('/networks'):
network_description = zkhandler.read('/networks/{}'.format(network))
for network in zkhandler.children('base.network'):
network_description = zkhandler.read(('network', network))
if network_description == description:
return False, 'ERROR: A network with description "{}" already exists!'.format(description)
@ -255,28 +251,28 @@ def add_network(zkhandler, vni, description, nettype,
else:
dhcp6_flag = 'False'
if nettype == 'managed' and not domain:
if nettype in ['managed'] and not domain:
domain = '{}.local'.format(description)
# Add the new network to Zookeeper
zkhandler.write([
('/networks/{}'.format(vni), description),
('/networks/{}/nettype'.format(vni), nettype),
('/networks/{}/domain'.format(vni), domain),
('/networks/{}/name_servers'.format(vni), name_servers),
('/networks/{}/ip6_network'.format(vni), ip6_network),
('/networks/{}/ip6_gateway'.format(vni), ip6_gateway),
('/networks/{}/dhcp6_flag'.format(vni), dhcp6_flag),
('/networks/{}/ip4_network'.format(vni), ip4_network),
('/networks/{}/ip4_gateway'.format(vni), ip4_gateway),
('/networks/{}/dhcp4_flag'.format(vni), dhcp4_flag),
('/networks/{}/dhcp4_start'.format(vni), dhcp4_start),
('/networks/{}/dhcp4_end'.format(vni), dhcp4_end),
('/networks/{}/dhcp4_leases'.format(vni), ''),
('/networks/{}/dhcp4_reservations'.format(vni), ''),
('/networks/{}/firewall_rules'.format(vni), ''),
('/networks/{}/firewall_rules/in'.format(vni), ''),
('/networks/{}/firewall_rules/out'.format(vni), '')
(('network', vni), description),
(('network.type', vni), nettype),
(('network.domain', vni), domain),
(('network.nameservers', vni), name_servers),
(('network.ip6.network', vni), ip6_network),
(('network.ip6.gateway', vni), ip6_gateway),
(('network.ip4.dhcp', vni), dhcp6_flag),
(('network.ip4.network', vni), ip4_network),
(('network.ip4.gateway', vni), ip4_gateway),
(('network.ip4.dhcp', vni), dhcp4_flag),
(('network.ip4.dhcp_start', vni), dhcp4_start),
(('network.ip4.dhcp_end', vni), dhcp4_end),
(('network.lease', vni), ''),
(('network.reservation', vni), ''),
(('network.rule', vni), ''),
(('network.rule.in', vni), ''),
(('network.rule.out', vni), '')
])
return True, 'Network "{}" added successfully!'.format(description)
@ -288,36 +284,36 @@ def modify_network(zkhandler, vni, description=None, domain=None, name_servers=N
# Add the modified parameters to Zookeeper
update_data = list()
if description is not None:
update_data.append(('/networks/{}'.format(vni), description))
update_data.append((('network', vni), description))
if domain is not None:
update_data.append(('/networks/{}/domain'.format(vni), domain))
update_data.append((('network.domain', vni), domain))
if name_servers is not None:
update_data.append(('/networks/{}/name_servers'.format(vni), name_servers))
update_data.append((('network.nameservers', vni), name_servers))
if ip4_network is not None:
update_data.append(('/networks/{}/ip4_network'.format(vni), ip4_network))
update_data.append((('network.ip4.network', vni), ip4_network))
if ip4_gateway is not None:
update_data.append(('/networks/{}/ip4_gateway'.format(vni), ip4_gateway))
update_data.append((('network.ip4.gateway', vni), ip4_gateway))
if ip6_network is not None:
update_data.append(('/networks/{}/ip6_network'.format(vni), ip6_network))
update_data.append((('network.ip6.network', vni), ip6_network))
if ip6_network:
update_data.append(('/networks/{}/dhcp6_flag'.format(vni), 'True'))
update_data.append((('network.ip6.dhcp', vni), 'True'))
else:
update_data.append(('/networks/{}/dhcp6_flag'.format(vni), 'False'))
update_data.append((('network.ip6.dhcp', vni), 'False'))
if ip6_gateway is not None:
update_data.append(('/networks/{}/ip6_gateway'.format(vni), ip6_gateway))
update_data.append((('network.ip6.gateway', vni), ip6_gateway))
else:
# If we're changing the network, but don't also specify the gateway,
# generate a new one automatically
if ip6_network:
ip6_netpart, ip6_maskpart = ip6_network.split('/')
ip6_gateway = '{}1'.format(ip6_netpart)
update_data.append(('/networks/{}/ip6_gateway'.format(vni), ip6_gateway))
update_data.append((('network.ip6.gateway', vni), ip6_gateway))
if dhcp4_flag is not None:
update_data.append(('/networks/{}/dhcp4_flag'.format(vni), dhcp4_flag))
update_data.append((('network.ip4.dhcp', vni), dhcp4_flag))
if dhcp4_start is not None:
update_data.append(('/networks/{}/dhcp4_start'.format(vni), dhcp4_start))
update_data.append((('network.ip4.dhcp_start', vni), dhcp4_start))
if dhcp4_end is not None:
update_data.append(('/networks/{}/dhcp4_end'.format(vni), dhcp4_end))
update_data.append((('network.ip4.dhcp_end', vni), dhcp4_end))
zkhandler.write(update_data)
@ -332,7 +328,9 @@ def remove_network(zkhandler, network):
return False, 'ERROR: Could not find network "{}" in the cluster!'.format(network)
# Delete the configuration
zkhandler.delete('/networks/{}'.format(vni))
zkhandler.delete([
('network', vni)
])
return True, 'Network "{}" removed successfully!'.format(description)
@ -352,18 +350,15 @@ def add_dhcp_reservation(zkhandler, network, ipaddress, macaddress, hostname):
if not isValidIP(ipaddress):
return False, 'ERROR: IP address "{}" is not valid!'.format(macaddress)
if zkhandler.exists('/networks/{}/dhcp4_reservations/{}'.format(net_vni, macaddress)):
if zkhandler.exists(('network.reservation', net_vni, 'reservation', macaddress)):
return False, 'ERROR: A reservation with MAC "{}" already exists!'.format(macaddress)
# Add the new static lease to ZK
try:
zkhandler.write([
('/networks/{}/dhcp4_reservations/{}'.format(net_vni, macaddress), 'static'),
('/networks/{}/dhcp4_reservations/{}/hostname'.format(net_vni, macaddress), hostname),
('/networks/{}/dhcp4_reservations/{}/ipaddr'.format(net_vni, macaddress), ipaddress)
(('network.reservation', net_vni, 'reservation', macaddress), 'static'),
(('network.reservation', net_vni, 'reservation.hostname', macaddress), hostname),
(('network.reservation', net_vni, 'reservation.ip', macaddress), ipaddress),
])
except Exception as e:
return False, 'ERROR: Failed to write to Zookeeper! Exception: "{}".'.format(e)
return True, 'DHCP reservation "{}" added successfully!'.format(macaddress)
@ -379,28 +374,30 @@ def remove_dhcp_reservation(zkhandler, network, reservation):
# Check if the reservation matches a static reservation description, a mac, or an IP address currently in the database
dhcp4_reservations_list = getNetworkDHCPReservations(zkhandler, net_vni)
for macaddr in dhcp4_reservations_list:
hostname = zkhandler.read('/networks/{}/dhcp4_reservations/{}/hostname'.format(net_vni, macaddr))
ipaddress = zkhandler.read('/networks/{}/dhcp4_reservations/{}/ipaddr'.format(net_vni, macaddr))
hostname = zkhandler.read(('network.reservation', net_vni, 'reservation.hostname', macaddr))
ipaddress = zkhandler.read(('network.reservation', net_vni, 'reservation.ip', macaddr))
if reservation == macaddr or reservation == hostname or reservation == ipaddress:
match_description = macaddr
lease_type_zk = 'reservations'
lease_type_zk = 'reservation'
lease_type_human = 'static reservation'
# Check if the reservation matches a dynamic reservation description, a mac, or an IP address currently in the database
dhcp4_leases_list = getNetworkDHCPLeases(zkhandler, net_vni)
for macaddr in dhcp4_leases_list:
hostname = zkhandler.read('/networks/{}/dhcp4_leases/{}/hostname'.format(net_vni, macaddr))
ipaddress = zkhandler.read('/networks/{}/dhcp4_leases/{}/ipaddr'.format(net_vni, macaddr))
hostname = zkhandler.read(('network.lease', net_vni, 'lease.hostname', macaddr))
ipaddress = zkhandler.read(('network.lease', net_vni, 'lease.ip', macaddr))
if reservation == macaddr or reservation == hostname or reservation == ipaddress:
match_description = macaddr
lease_type_zk = 'leases'
lease_type_zk = 'lease'
lease_type_human = 'dynamic lease'
if not match_description:
return False, 'ERROR: No DHCP reservation or lease exists matching "{}"!'.format(reservation)
# Remove the entry from zookeeper
zkhandler.delete('/networks/{}/dhcp4_{}/{}'.format(net_vni, lease_type_zk, match_description))
zkhandler.delete([
(f'network.{lease_type_zk}', net_vni, f'{lease_type_zk}', match_description),
])
return True, 'DHCP {} "{}" removed successfully!'.format(lease_type_human, match_description)
@ -449,14 +446,14 @@ def add_acl(zkhandler, network, direction, description, rule, order):
continue
else:
zkhandler.write([
('/networks/{}/firewall_rules/{}/{}/order'.format(net_vni, direction, acl['description']), idx)
((f'network.rule.{direction}', net_vni, 'rule.order', acl['description']), idx)
])
# Add the new rule
zkhandler.write([
('/networks/{}/firewall_rules/{}/{}'.format(net_vni, direction, description), ''),
('/networks/{}/firewall_rules/{}/{}/order'.format(net_vni, direction, description), order),
('/networks/{}/firewall_rules/{}/{}/rule'.format(net_vni, direction, description), rule)
((f'network.rule.{direction}', net_vni, 'rule', description), ''),
((f'network.rule.{direction}', net_vni, 'rule.order', description), order),
((f'network.rule.{direction}', net_vni, 'rule.rule', description), rule),
])
return True, 'Firewall rule "{}" added successfully!'.format(description)
@ -481,10 +478,9 @@ def remove_acl(zkhandler, network, description):
return False, 'ERROR: No firewall rule exists matching description "{}"!'.format(description)
# Remove the entry from zookeeper
try:
zkhandler.delete('/networks/{}/firewall_rules/{}/{}'.format(net_vni, match_direction, match_description))
except Exception as e:
return False, 'ERROR: Failed to write to Zookeeper! Exception: "{}".'.format(e)
zkhandler.delete([
(f'network.rule.{match_direction}', net_vni, 'rule', match_description)
])
# Update the existing ordering
updated_acl_list = getNetworkACLs(zkhandler, net_vni, match_direction)
@ -496,7 +492,7 @@ def remove_acl(zkhandler, network, description):
continue
else:
zkhandler.write([
('/networks/{}/firewall_rules/{}/{}/order'.format(net_vni, match_direction, acl['description']), idx)
((f'network.rule.{match_direction}', net_vni, 'rule.order', acl['description']), idx),
])
return True, 'Firewall rule "{}" removed successfully!'.format(match_description)
@ -517,10 +513,10 @@ def get_info(zkhandler, network):
def get_list(zkhandler, limit, is_fuzzy=True):
net_list = []
full_net_list = zkhandler.children('/networks')
full_net_list = zkhandler.children('base.network')
for net in full_net_list:
description = zkhandler.read('/networks/{}'.format(net))
description = zkhandler.read(('network', net))
if limit:
try:
if not is_fuzzy: