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Fold reservations into leases DB

This commit is contained in:
Joshua Boniface 2018-09-30 11:22:25 -04:00
parent 436dc42576
commit 3775edf415
1 changed files with 35 additions and 21 deletions
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56
client-common/client_lib/network.py
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@ -102,8 +102,13 @@ def getNetworkDescription(zk_conn, network):
def getNetworkDHCPReservations(zk_conn, vni): def getNetworkDHCPReservations(zk_conn, vni):
# Get a list of VNIs by listing the children of /networks/<vni>/dhcp_reservations # Get a list of VNIs by listing the children of /networks/<vni>/dhcp_reservations
dhcp_reservations = sorted(zk_conn.get_children('/networks/{}/dhcp_reservations'.format(vni))) dhcp_reservations = []
return dhcp_reservations dhcp_leases = zk_conn.get_children('/networks/{}/dhcp_leases'.format(vni))
for lease in dhcp_leases:
timestamp = zkhandler.readdata(zk_conn, lease)
if timestamp == 'static':
dhcp_reservations.append(lease)
return sorted(dhcp_reservations)
def getNetworkFirewallRules(zk_conn, vni): def getNetworkFirewallRules(zk_conn, vni):
firewall_rules = zk_conn.get_children('/networks/{}/firewall_rules'.format(vni)) firewall_rules = zk_conn.get_children('/networks/{}/firewall_rules'.format(vni))
@ -119,10 +124,10 @@ def getNetworkInformation(zk_conn, vni):
dhcp_end = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_end'.format(vni)) dhcp_end = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_end'.format(vni))
return description, domain, ip_network, ip_gateway, dhcp_flag, dhcp_start, dhcp_end return description, domain, ip_network, ip_gateway, dhcp_flag, dhcp_start, dhcp_end
def getDHCPReservationInformation(zk_conn, vni, reservation): def getDHCPReservationInformation(zk_conn, vni, macaddr):
description = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_reservations/{}'.format(vni, reservation)) description = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_leases/{}/description'.format(vni, macaddr))
ip_address = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_reservations/{}/ipv4addr'.format(vni, reservation)) ip_address = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_leases/{}/ipaddr'.format(vni, macaddr))
mac_address = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_reservations/{}/macaddr'.format(vni, reservation)) mac_address = macaddr
return description, ip_address, mac_address return description, ip_address, mac_address
def formatNetworkInformation(zk_conn, vni, long_output): def formatNetworkInformation(zk_conn, vni, long_output):
@ -149,7 +154,12 @@ def formatNetworkInformation(zk_conn, vni, long_output):
ainformation.append('{}DHCP range:{} {} - {}'.format(ansiiprint.purple(), ansiiprint.end(), dhcp_start, dhcp_end)) ainformation.append('{}DHCP range:{} {} - {}'.format(ansiiprint.purple(), ansiiprint.end(), dhcp_start, dhcp_end))
if long_output: if long_output:
dhcp_reservations_list = zk_conn.get_children('/networks/{}/dhcp_reservations'.format(vni)) dhcp_leases = zk_conn.get_children('/networks/{}/dhcp_leases'.format(vni))
dhcp_reservations_list = []
for lease in dhcp_leases:
description = zkhandler.readdata(zk_conn, lease)
if description == 'static':
dhcp_reservations_list.append(lease)
if dhcp_reservations_list: if dhcp_reservations_list:
ainformation.append('') ainformation.append('')
ainformation.append('{}Client DHCP reservations:{}'.format(ansiiprint.bold(), ansiiprint.end())) ainformation.append('{}Client DHCP reservations:{}'.format(ansiiprint.bold(), ansiiprint.end()))
@ -157,6 +167,7 @@ def formatNetworkInformation(zk_conn, vni, long_output):
dhcp_reservations_string = formatDHCPReservationList(zk_conn, vni, dhcp_reservations_list) dhcp_reservations_string = formatDHCPReservationList(zk_conn, vni, dhcp_reservations_list)
for line in dhcp_reservations_string.split('\n'): for line in dhcp_reservations_string.split('\n'):
ainformation.append(line) ainformation.append(line)
firewall_rules = zk_conn.get_children('/networks/{}/firewall_rules'.format(vni)) firewall_rules = zk_conn.get_children('/networks/{}/firewall_rules'.format(vni))
if firewall_rules: if firewall_rules:
ainformation.append('') ainformation.append('')
@ -450,8 +461,8 @@ def add_dhcp_reservation(zk_conn, network, ipaddress, macaddress, description):
if net_vni == None: if net_vni == None:
return False, 'ERROR: Could not find network "{}" in the cluster!'.format(network) return False, 'ERROR: Could not find network "{}" in the cluster!'.format(network)
# Use lowercase MAC format exclusively # Use uppercase MAC format exclusively
macaddress = macaddress.lower() macaddress = macaddress.upper()
if not isValidMAC(macaddress): if not isValidMAC(macaddress):
return False, 'ERROR: MAC address "{}" is not valid! Always use ":" as a separator.'.format(macaddress) return False, 'ERROR: MAC address "{}" is not valid! Always use ":" as a separator.'.format(macaddress)
@ -462,15 +473,15 @@ def add_dhcp_reservation(zk_conn, network, ipaddress, macaddress, description):
if not description: if not description:
description = macaddress description = macaddress
if zk_conn.exists('/networks/{}/dhcp_reservations/{}'.format(net_vni, description)): if zk_conn.exists('/networks/{}/dhcp_leases/{}'.format(net_vni, macaddress)):
return False, 'ERROR: A reservation with description {} already exists!'.format(description) return False, 'ERROR: A reservation with MAC "{}" already exists!'.format(macaddress)
# Add the new network to ZK # Add the new network to ZK
try: try:
zkhandler.writedata(zk_conn, { zkhandler.writedata(zk_conn, {
'/networks/{}/dhcp_reservations/{}'.format(net_vni, description): description, '/networks/{}/dhcp_reservations/{}'.format(net_vni, macaddr): description,
'/networks/{}/dhcp_reservations/{}/macaddr'.format(net_vni, description): macaddress, '/networks/{}/dhcp_reservations/{}/description'.format(net_vni, macaddr): description,
'/networks/{}/dhcp_reservations/{}/ipv4addr'.format(net_vni, description): ipaddress '/networks/{}/dhcp_reservations/{}/ipaddr'.format(net_vni, macaddr): ipaddress
}) })
except Exception as e: except Exception as e:
return False, 'ERROR: Failed to write to Zookeeper! Exception: "{}".'.format(e) return False, 'ERROR: Failed to write to Zookeeper! Exception: "{}".'.format(e)
@ -486,19 +497,22 @@ def remove_dhcp_reservation(zk_conn, network, reservation):
match_description = '' match_description = ''
# Check if the reservation matches a description, a mac, or an IP address currently in the database # Check if the reservation matches a description, a mac, or an IP address currently in the database
reservation_list = zk_conn.get_children('/networks/{}/dhcp_reservations'.format(net_vni)) reservation_list = zk_conn.get_children('/networks/{}/dhcp_leases'.format(net_vni))
for description in reservation_list: for macaddr in reservation_list:
macaddress = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_reservations/{}/macaddr'.format(net_vni, description)) timestamp = zkhandler.readdata(zk_conn, macaddr)
ipaddress = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_reservations/{}/ipv4addr'.format(net_vni, description)) if timestamp != 'static':
if reservation == description or reservation == macaddress or reservation == ipaddress: continue
match_description = description description = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_leases/{}/description'.format(net_vni, macaddr))
ipaddress = zkhandler.readdata(zk_conn, '/networks/{}/dhcp_leases/{}/ipaddr'.format(net_vni, macaddr))
if reservation == macaddr or reservation == description or reservation == ipaddress:
match_description = macaddr
if not match_description: if not match_description:
return False, 'ERROR: No DHCP reservation exists matching "{}"!'.format(reservation) return False, 'ERROR: No DHCP reservation exists matching "{}"!'.format(reservation)
# Remove the entry from zookeeper # Remove the entry from zookeeper
try: try:
zk_conn.delete('/networks/{}/dhcp_reservations/{}'.format(net_vni, match_description), recursive=True) zk_conn.delete('/networks/{}/dhcp_leases/{}'.format(net_vni, match_description), recursive=True)
except: except:
return False, 'ERROR: Failed to write to Zookeeper!' return False, 'ERROR: Failed to write to Zookeeper!'