/
vnc_cfg_types.py
1364 lines (1168 loc) · 54.2 KB
/
vnc_cfg_types.py
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#
# Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
#
#
# This file is built up from an autogenerated template resource_server.py and
# contains code/hooks at different point during processing a request, specific
# to type of resource. For eg. allocation of mac/ip-addr for a port during its
# creation.
from cfgm_common import jsonutils as json
import re
import cfgm_common
import cfgm_common.utils
import cfgm_common.exceptions
import netaddr
import uuid
from vnc_quota import QuotaHelper
from gen.resource_xsd import *
from gen.resource_common import *
from gen.resource_server import *
from netaddr import IPNetwork
from pprint import pformat
from pysandesh.gen_py.sandesh.ttypes import SandeshLevel
class GlobalSystemConfigServer(GlobalSystemConfigServerGen):
@classmethod
def _check_asn(cls, obj_dict, db_conn):
global_asn = obj_dict.get('autonomous_system')
if not global_asn:
return (True, '')
(ok, result) = db_conn.dbe_list('virtual-network')
if not ok:
return (ok, result)
for vn_name, vn_uuid in result:
try:
ok, result = db_conn.dbe_read('virtual-network', {'uuid': vn_uuid},
obj_fields=['route_target_list'])
except cfgm_common.exceptions.NoIdError:
continue
if not ok:
return ok, result
rt_dict = result.get('route_target_list', {})
for rt in rt_dict.get('route_target', []):
(_, asn, target) = rt.split(':')
if (int(asn) == global_asn and
int(target) >= cfgm_common.BGP_RTGT_MIN_ID):
return (False, (400, "Virtual network %s is configured "
"with a route target with this ASN and route "
"target value in the same range as used by "
"automatically allocated route targets" % vn_name))
return (True, '')
# end _check_asn
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
ok, result = cls._check_asn(obj_dict, db_conn)
if not ok:
return ok, result
return True, ''
# end http_post_collection
@classmethod
def http_put(cls, id, fq_name, obj_dict, db_conn):
ok, result = cls._check_asn(obj_dict, db_conn)
if not ok:
return ok, result
return True, ''
# end http_put
# end class GlobalSystemConfigServer
class FloatingIpServer(FloatingIpServerGen):
generate_default_instance = False
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
proj_dict = obj_dict['project_refs'][0]
if 'uuid' in proj_dict:
proj_uuid = proj_dict['uuid']
else:
proj_uuid = db_conn.fq_name_to_uuid('project', proj_dict['to'])
user_visibility = obj_dict['id_perms'].get('user_visible', True)
verify_quota_kwargs = {'db_conn': db_conn,
'fq_name': obj_dict['fq_name'],
'resource': 'floating_ip_back_refs',
'obj_type': 'floating-ip',
'user_visibility': user_visibility,
'proj_uuid': proj_uuid}
(ok, response) = QuotaHelper.verify_quota_for_resource(
**verify_quota_kwargs)
if not ok:
return (ok, response)
vn_fq_name = obj_dict['fq_name'][:-2]
req_ip = obj_dict.get("floating_ip_address")
if req_ip and cls.addr_mgmt.is_ip_allocated(req_ip, vn_fq_name):
return (False, (403, 'Ip address already in use'))
try:
fip_addr = cls.addr_mgmt.ip_alloc_req(vn_fq_name,
asked_ip_addr=req_ip,
alloc_id=obj_dict['uuid'])
except Exception as e:
return (False, (500, str(e)))
obj_dict['floating_ip_address'] = fip_addr
db_conn.config_log('AddrMgmt: alloc %s FIP for vn=%s, tenant=%s, askip=%s' \
% (obj_dict['floating_ip_address'], vn_fq_name, tenant_name,
req_ip), level=SandeshLevel.SYS_DEBUG)
return True, ""
# end http_post_collection
@classmethod
def http_post_collection_fail(cls, tenant_name, obj_dict, db_conn):
vn_fq_name = obj_dict['fq_name'][:-2]
fip_addr = obj_dict['floating_ip_address']
db_conn.config_log('AddrMgmt: free FIP %s for vn=%s tenant=%s, on post fail'
% (fip_addr, vn_fq_name, tenant_name),
level=SandeshLevel.SYS_DEBUG)
cls.addr_mgmt.ip_free_req(fip_addr, vn_fq_name)
return True, ""
# end http_post_collection_fail
@classmethod
def http_delete(cls, id, obj_dict, db_conn):
vn_fq_name = obj_dict['fq_name'][:-2]
fip_addr = obj_dict['floating_ip_address']
db_conn.config_log('AddrMgmt: free FIP %s for vn=%s'
% (fip_addr, vn_fq_name),
level=SandeshLevel.SYS_DEBUG)
cls.addr_mgmt.ip_free_req(fip_addr, vn_fq_name)
return True, ""
# end http_delete
@classmethod
def http_delete_fail(cls, id, obj_dict, db_conn):
vn_fq_name = obj_dict['fq_name'][:-2]
req_ip = obj_dict.get("floating_ip_address", None)
if req_ip is None:
return True, ""
try:
cls.addr_mgmt.ip_alloc_req(vn_fq_name, asked_ip_addr=req_ip,
alloc_id=obj_dict['uuid'])
except Exception as e:
return (False, (500, str(e)))
db_conn.config_log('AddrMgmt: alloc %s FIP for vn=%s to recover DELETE failure'
% (obj_dict['floating_ip_address'], vn_fq_name),
level=SandeshLevel.SYS_DEBUG)
return True, ""
# end http_delete_fail
@classmethod
def dbe_create_notification(cls, obj_ids, obj_dict):
fip_addr = obj_dict['floating_ip_address']
vn_fq_name = obj_dict['fq_name'][:-2]
cls.addr_mgmt.ip_alloc_notify(fip_addr, vn_fq_name)
# end dbe_create_notification
@classmethod
def dbe_delete_notification(cls, obj_ids, obj_dict):
fip_addr = obj_dict['floating_ip_address']
vn_fq_name = obj_dict['fq_name'][:-2]
cls.addr_mgmt.ip_free_notify(fip_addr, vn_fq_name)
# end dbe_delete_notification
# end class FloatingIpServer
class InstanceIpServer(InstanceIpServerGen):
generate_default_instance = False
@classmethod
def _get_subnet_name(cls, vn_dict, subnet_uuid):
ipam_refs = vn_dict.get('network_ipam_refs', [])
subnet_name = None
for ipam in ipam_refs:
ipam_subnets = ipam['attr'].get('ipam_subnets', [])
for subnet in ipam_subnets:
if subnet['subnet_uuid'] == subnet_uuid:
subnet_dict = subnet['subnet']
subnet_name = subnet_dict['ip_prefix'] + '/' + str(
subnet_dict['ip_prefix_len'])
return subnet_name
@classmethod
def _is_gateway_ip(cls, vn_dict, ip_addr):
ipam_refs = vn_dict.get('network_ipam_refs', [])
for ipam in ipam_refs:
ipam_subnets = ipam['attr'].get('ipam_subnets', [])
for subnet in ipam_subnets:
if subnet['default_gateway'] == ip_addr:
return True
return False
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
vn_fq_name = obj_dict['virtual_network_refs'][0]['to']
if ((vn_fq_name == cfgm_common.IP_FABRIC_VN_FQ_NAME) or
(vn_fq_name == cfgm_common.LINK_LOCAL_VN_FQ_NAME)):
# Ignore ip-fabric and link-local address allocations
return True, ""
req_ip = obj_dict.get("instance_ip_address", None)
vn_id = {'uuid': db_conn.fq_name_to_uuid('virtual-network', vn_fq_name)}
try:
read_ok, read_result = db_conn.dbe_read('virtual-network', vn_id,
obj_fields=['router_external', 'network_ipam_refs'])
except cfgm_common.exceptions.NoIdError:
return (False, (404, 'No Network: %s' %(vn_id)))
if not read_ok:
return (False, (500, 'Internal error : ' + pformat(read_result)))
vn_dict = read_result
subnet_uuid = obj_dict.get('subnet_uuid', None)
sub = cls._get_subnet_name(vn_dict, subnet_uuid) if subnet_uuid else None
if subnet_uuid and not sub:
return (False, (404, "Subnet id " + subnet_uuid + " not found"))
req_ip_family = obj_dict.get("instance_ip_family", None)
if req_ip is None and subnet_uuid:
# pickup the version from subnet
req_ip_version = IPNetwork(sub).version
else:
req_ip_version = 4 # default ip v4
if req_ip_family == "v6": req_ip_version = 6
# If its an external network, check whether floating IP equivalent to
# requested fixed-IP is already reserved.
router_external = vn_dict.get('router_external', None)
if req_ip and router_external and \
not cls._is_gateway_ip(vn_dict, req_ip) and \
cls.addr_mgmt.is_ip_allocated(req_ip, vn_fq_name):
return (False, (403, 'Ip address already in use'))
try:
ip_addr = cls.addr_mgmt.ip_alloc_req(
vn_fq_name, vn_dict=vn_dict, sub=sub, asked_ip_addr=req_ip,
asked_ip_version=req_ip_version,
alloc_id=obj_dict['uuid'])
except Exception as e:
return (False, (500, str(e)))
obj_dict['instance_ip_address'] = ip_addr
db_conn.config_log('AddrMgmt: alloc %s for vn=%s, tenant=%s, askip=%s'
% (obj_dict['instance_ip_address'],
vn_fq_name, tenant_name, req_ip),
level=SandeshLevel.SYS_DEBUG)
return True, ""
# end http_post_collection
@classmethod
def http_post_collection_fail(cls, tenant_name, obj_dict, db_conn):
vn_fq_name = obj_dict['virtual_network_refs'][0]['to']
if ((vn_fq_name == cfgm_common.IP_FABRIC_VN_FQ_NAME) or
(vn_fq_name == cfgm_common.LINK_LOCAL_VN_FQ_NAME)):
# Ignore ip-fabric and link-local address allocations
return True, ""
ip_addr = obj_dict['instance_ip_address']
db_conn.config_log('AddrMgmt: free IP %s, vn=%s tenant=%s on post fail'
% (ip_addr, vn_fq_name, tenant_name),
level=SandeshLevel.SYS_DEBUG)
cls.addr_mgmt.ip_free_req(ip_addr, vn_fq_name)
return True, ""
# end http_post_collection_fail
@classmethod
def http_delete(cls, id, obj_dict, db_conn):
vn_fq_name = obj_dict['virtual_network_refs'][0]['to']
if ((vn_fq_name == cfgm_common.IP_FABRIC_VN_FQ_NAME) or
(vn_fq_name == cfgm_common.LINK_LOCAL_VN_FQ_NAME)):
# Ignore ip-fabric and link-local address allocations
return True, ""
ip_addr = obj_dict.get('instance_ip_address')
if not ip_addr:
db_conn.config_log('instance_ip_address missing for object %s'
% (obj_dict['uuid']),
level=SandeshLevel.SYS_NOTICE)
return True, ""
db_conn.config_log('AddrMgmt: free IP %s, vn=%s'
% (ip_addr, vn_fq_name),
level=SandeshLevel.SYS_DEBUG)
cls.addr_mgmt.ip_free_req(ip_addr, vn_fq_name)
return True, ""
# end http_delete
@classmethod
def http_delete_fail(cls, id, obj_dict, db_conn):
vn_fq_name = obj_dict['virtual_network_refs'][0]['to']
if ((vn_fq_name == cfgm_common.IP_FABRIC_VN_FQ_NAME) or
(vn_fq_name == cfgm_common.LINK_LOCAL_VN_FQ_NAME)):
# Ignore ip-fabric and link-local address allocations
return True, ""
req_ip = obj_dict.get("instance_ip_address", None)
if req_ip is None:
return True, ""
try:
cls.addr_mgmt.ip_alloc_req(vn_fq_name, asked_ip_addr=req_ip,
alloc_id=obj_dict['uuid'])
except Exception as e:
return (False, (500, str(e)))
db_conn.config_log('AddrMgmt: alloc %s for vn=%s to recover DELETE failure'
% (obj_dict['instance_ip_address'], vn_fq_name),
level=SandeshLevel.SYS_DEBUG)
return True, ""
# end http_delete_fail
@classmethod
def dbe_create_notification(cls, obj_ids, obj_dict):
ip_addr = obj_dict['instance_ip_address']
vn_fq_name = obj_dict['virtual_network_refs'][0]['to']
cls.addr_mgmt.ip_alloc_notify(ip_addr, vn_fq_name)
# end dbe_create_notification
@classmethod
def dbe_delete_notification(cls, obj_ids, obj_dict):
try:
ip_addr = obj_dict['instance_ip_address']
except KeyError:
return
vn_fq_name = obj_dict['virtual_network_refs'][0]['to']
cls.addr_mgmt.ip_free_notify(ip_addr, vn_fq_name)
# end dbe_delete_notification
# end class InstanceIpServer
class LogicalRouterServer(LogicalRouterServerGen):
generate_default_instance = False
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
user_visibility = obj_dict['id_perms'].get('user_visible', True)
verify_quota_kwargs = {'db_conn': db_conn,
'fq_name': obj_dict['fq_name'],
'resource': 'logical_routers',
'obj_type': 'logical-router',
'user_visibility': user_visibility}
return QuotaHelper.verify_quota_for_resource(**verify_quota_kwargs)
# end http_post_collection
# end class LogicalRouterServer
class VirtualMachineInterfaceServer(VirtualMachineInterfaceServerGen):
generate_default_instance = False
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
vn_dict = obj_dict['virtual_network_refs'][0]
vn_uuid = vn_dict.get('uuid')
if not vn_uuid:
vn_fq_name = vn_dict.get('to')
if not vn_fq_name:
msg = 'Bad Request: Reference should have uuid or fq_name: %s'\
%(pformat(vn_dict))
return (False, (400, msg))
vn_uuid = db_conn.fq_name_to_uuid('virtual-network', vn_fq_name)
try:
(ok, result) = db_conn.dbe_read('virtual-network', {'uuid':vn_uuid},
obj_fields=['parent_uuid'])
except cfgm_common.exceptions.NoIdError:
return (False, (404, 'No Network: %s' %(vn_uuid)))
if not ok:
return (False, (500, 'Internal error : ' + pformat(result)))
vn_dict = result
proj_uuid = vn_dict['parent_uuid']
user_visibility = obj_dict['id_perms'].get('user_visible', True)
verify_quota_kwargs = {'db_conn': db_conn,
'fq_name': obj_dict['fq_name'],
'resource': 'virtual_machine_interfaces',
'obj_type': 'virtual-machine-interface',
'user_visibility': user_visibility,
'proj_uuid': proj_uuid}
(ok, response) = QuotaHelper.verify_quota_for_resource(
**verify_quota_kwargs)
if not ok:
return (ok, response)
inmac = None
if 'virtual_machine_interface_mac_addresses' in obj_dict:
mc = obj_dict['virtual_machine_interface_mac_addresses']
if 'mac_address' in mc:
if len(mc['mac_address'])==1:
inmac = [m.replace("-",":") for m in mc['mac_address']]
if inmac!=None:
mac_addrs_obj = MacAddressesType(inmac)
else:
mac_addr = cls.addr_mgmt.mac_alloc(obj_dict)
mac_addrs_obj = MacAddressesType([mac_addr])
mac_addrs_json = json.dumps(
mac_addrs_obj,
default=lambda o: dict((k, v)
for k, v in o.__dict__.iteritems()))
mac_addrs_dict = json.loads(mac_addrs_json)
obj_dict['virtual_machine_interface_mac_addresses'] = mac_addrs_dict
if 'virtual_machine_interface_allowed_address_pairs' in obj_dict:
aap_config = obj_dict['virtual_machine_interface_allowed_address_pairs']
if 'allowed_address_pair' in aap_config:
aaps = aap_config['allowed_address_pair']
for aap in aaps or []:
if aap['mac'] == "":
aap['mac'] = obj_dict['virtual_machine_interface_mac_addresses']['mac_address']
return True, ""
# end http_post_collection
@classmethod
def http_put(cls, id, fq_name, obj_dict, db_conn):
if 'virtual_machine_interface_allowed_address_pairs' in obj_dict:
vmi_id = {'uuid': id}
try:
(read_ok, read_result) = db_conn.dbe_read('virtual-machine-interface', vmi_id)
except cfgm_common.exceptions.NoIdError as e:
return (False, (404, str(e)))
if not read_ok:
return (False, (500, read_result))
aap_config = obj_dict['virtual_machine_interface_allowed_address_pairs']
if 'allowed_address_pair' in aap_config:
aaps = aap_config['allowed_address_pair']
for aap in aaps or []:
if aap['mac'] == "":
aap['mac'] = read_result['virtual_machine_interface_mac_addresses']['mac_address']
return True, ""
# end http_put
# end class VirtualMachineInterfaceServer
class VirtualNetworkServer(VirtualNetworkServerGen):
@classmethod
def _check_route_targets(cls, obj_dict, db_conn):
if 'route_target_list' not in obj_dict:
return (True, '')
config_uuid = db_conn.fq_name_to_uuid('global_system_config', ['default-global-system-config'])
config = db_conn.uuid_to_obj_dict(config_uuid)
global_asn = config.get('prop:autonomous_system')
if not global_asn:
return (True, '')
global_asn = json.loads(global_asn)
rt_dict = obj_dict.get('route_target_list')
if not rt_dict:
return (True, '')
for rt in rt_dict.get('route_target', []):
try:
(prefix, asn, target) = rt.split(':')
if prefix != 'target':
raise ValueError()
target = int(target)
if not asn.isdigit():
netaddr.IPAddress(asn)
except (ValueError, netaddr.core.AddrFormatError) as e:
return (False, "Route target must be of the format "
"'target:<asn>:<number>' or 'target:<ip>:number'")
if asn == global_asn and target >= cfgm_common.BGP_RTGT_MIN_ID:
return (False, "Configured route target must use ASN that is "
"different from global ASN or route target value must"
" be less than %d" % cfgm_common.BGP_RTGT_MIN_ID)
return (True, '')
# end _check_route_targets
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
user_visibility = obj_dict['id_perms'].get('user_visible', True)
verify_quota_kwargs = {'db_conn': db_conn,
'fq_name': obj_dict['fq_name'],
'resource': 'virtual_networks',
'obj_type': 'virtual-network',
'user_visibility': user_visibility}
(ok, response) = QuotaHelper.verify_quota_for_resource(
**verify_quota_kwargs)
if not ok:
return (ok, response)
db_conn.update_subnet_uuid(obj_dict)
(ok, result) = cls.addr_mgmt.net_check_subnet(obj_dict)
if not ok:
return (ok, (409, result))
(ok, error) = cls._check_route_targets(obj_dict, db_conn)
if not ok:
return (False, (400, error))
try:
cls.addr_mgmt.net_create_req(obj_dict)
except Exception as e:
return (False, (500, str(e)))
return True, ""
# end http_post_collection
@classmethod
def http_post_collection_fail(cls, tenant_name, obj_dict, db_conn):
cls.addr_mgmt.net_delete_req(obj_dict)
return True, ""
# end post_collection_fail
@classmethod
def http_put(cls, id, fq_name, obj_dict, db_conn):
if ((fq_name == cfgm_common.IP_FABRIC_VN_FQ_NAME) or
(fq_name == cfgm_common.LINK_LOCAL_VN_FQ_NAME)):
# Ignore ip-fabric subnet updates
return True, ""
if 'network_ipam_refs' not in obj_dict:
# NOP for addr-mgmt module
return True, ""
vn_id = {'uuid': id}
try:
(read_ok, read_result) = db_conn.dbe_read('virtual-network', vn_id,
obj_fields=['network_ipam_refs'])
except cfgm_common.exceptions.NoIdError as e:
return (False, (404, str(e)))
if not read_ok:
return (False, (500, read_result))
(ok, result) = cls.addr_mgmt.net_check_subnet(obj_dict)
if not ok:
return (ok, (409, result))
(ok, result) = cls.addr_mgmt.net_check_subnet_quota(read_result,
obj_dict, db_conn)
if not ok:
return (ok, (403, result))
(ok, result) = cls.addr_mgmt.net_check_subnet_overlap(read_result,
obj_dict)
if not ok:
return (ok, (409, result))
(ok, result) = cls.addr_mgmt.net_check_subnet_delete(read_result,
obj_dict)
if not ok:
return (ok, (409, result))
db_conn.update_subnet_uuid(obj_dict)
try:
cls.addr_mgmt.net_update_req(fq_name, read_result, obj_dict, id)
except Exception as e:
return (False, (500, str(e)))
(ok, error) = cls._check_route_targets(obj_dict, db_conn)
if not ok:
return (False, (400, error))
return True, ""
# end http_put
@classmethod
def http_put_fail(cls, id, fq_name, obj_dict, db_conn):
if ((fq_name == cfgm_common.IP_FABRIC_VN_FQ_NAME) or
(fq_name == cfgm_common.LINK_LOCAL_VN_FQ_NAME)):
# Ignore ip-fabric subnet updates
return True, ""
ipam_refs = obj_dict.get('network_ipam_refs', None)
if not ipam_refs:
# NOP for addr-mgmt module
return True, ""
vn_id = {'uuid': id}
try:
(read_ok, read_result) = db_conn.dbe_read('virtual-network', vn_id,
obj_fields=['network_ipam_refs'])
except cfgm_common.exceptions.NoIdError as e:
return (False, (404, 'VN Not Found at PUT fail: %s' %(vn_id)))
if not read_ok:
return (False, (500, read_result))
# failed => update with flipped values for db_dict and req_dict
cls.addr_mgmt.net_update_req(fq_name, obj_dict, read_result, id)
# end http_put_fail
@classmethod
def http_delete(cls, id, obj_dict, db_conn):
cls.addr_mgmt.net_delete_req(obj_dict)
return True, ""
# end http_delete
@classmethod
def http_delete_fail(cls, id, obj_dict, db_conn):
cls.addr_mgmt.net_create_req(obj_dict)
return True, ""
# end http_delete_fail
@classmethod
def ip_alloc(cls, vn_fq_name, subnet_name, count):
ip_list = [cls.addr_mgmt.ip_alloc_req(vn_fq_name, sub=subnet_name,
alloc_id='user-opaque-alloc')
for i in range(count)]
msg = 'AddrMgmt: reserve %d IP for vn=%s, subnet=%s - %s' \
% (count, vn_fq_name, subnet_name if subnet_name else '', ip_list)
cls.addr_mgmt.config_log(msg, level=SandeshLevel.SYS_DEBUG)
return {'ip_addr': ip_list}
# end ip_alloc
@classmethod
def ip_free(cls, vn_fq_name, subnet_name, ip_list):
msg = 'AddrMgmt: release IP %s for vn=%s, subnet=%s' \
% (ip_list, vn_fq_name, subnet_name if subnet_name else '')
cls.addr_mgmt.config_log(msg, level=SandeshLevel.SYS_DEBUG)
for ip_addr in ip_list:
cls.addr_mgmt.ip_free_req(ip_addr, vn_fq_name, subnet_name)
# end ip_free
@classmethod
def subnet_ip_count(cls, vn_fq_name, subnet_list):
ip_count_list = []
for item in subnet_list:
ip_count_list.append(cls.addr_mgmt.ip_count_req(vn_fq_name, item))
return {'ip_count_list': ip_count_list}
# end subnet_ip_count
@classmethod
def dbe_create_notification(cls, obj_ids, obj_dict):
cls.addr_mgmt.net_create_notify(obj_ids, obj_dict)
# end dbe_create_notification
@classmethod
def dbe_update_notification(cls, obj_ids):
cls.addr_mgmt.net_update_notify(obj_ids)
# end dbe_update_notification
@classmethod
def dbe_delete_notification(cls, obj_ids, obj_dict):
cls.addr_mgmt.net_delete_notify(obj_ids, obj_dict)
# end dbe_update_notification
# end class VirtualNetworkServer
class NetworkIpamServer(NetworkIpamServerGen):
@classmethod
def http_put(cls, id, fq_name, obj_dict, db_conn):
ipam_uuid = obj_dict['uuid']
ipam_id = {'uuid': ipam_uuid}
try:
(read_ok, read_result) = db_conn.dbe_read('network-ipam', ipam_id)
except cfgm_common.exceptions.NoIdError as e:
return (False, (404, str(e)))
if not read_ok:
return (False, (500, "Error in IPAM update: %s" %(read_result)))
old_ipam_mgmt = read_result.get('network_ipam_mgmt')
new_ipam_mgmt = obj_dict.get('network_ipam_mgmt')
if not old_ipam_mgmt or not new_ipam_mgmt:
return True, ""
old_dns_method = old_ipam_mgmt.get('ipam_dns_method')
new_dns_method = new_ipam_mgmt.get('ipam_dns_method')
if not cls.is_change_allowed(old_dns_method, new_dns_method,
read_result, db_conn):
return (False, (409, "Cannot change DNS Method " +
" with active VMs referring to the IPAM"))
return True, ""
# end http_put
@classmethod
def http_put_fail(cls, id, fq_name, obj_dict, db_conn):
# undo any state change done by http_put function
return True, ""
# end http_put_fail
@classmethod
def is_change_allowed(cls, old, new, obj_dict, db_conn):
active_vm_present = cls.is_active_vm_present(obj_dict, db_conn)
if active_vm_present:
if (old == "default-dns-server" or old == "virtual-dns-server"):
if (new == "tenant-dns-server" or new == None):
return False
if (old == "tenant-dns-server" and new != old):
return False
if (old == None and new != old):
return False
return True
# end is_change_allowed
@classmethod
def is_active_vm_present(cls, obj_dict, db_conn):
if 'virtual_network_back_refs' in obj_dict:
vn_backrefs = obj_dict['virtual_network_back_refs']
for vn in vn_backrefs:
vn_uuid = vn['uuid']
vn_id = {'uuid': vn_uuid}
try:
(read_ok, read_result) = db_conn.dbe_read('virtual-network',
vn_id)
except cfgm_common.exceptions.NoIdError:
continue
if not read_ok:
db_conn.config_log('Error in active vm check %s'
%(read_result),
level=SandeshLevel.SYS_ERR)
# Cannot determine, err on side of caution
return True
if 'virtual_machine_interface_back_refs' in read_result:
return True
return False
# end is_active_vm_present
# end class NetworkIpamServer
class VirtualDnsServer(VirtualDnsServerGen):
generate_default_instance = False
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
return cls.validate_dns_server(obj_dict, db_conn)
# end http_post_collection
@classmethod
def http_put(cls, id, fq_name, obj_dict, db_conn):
return cls.validate_dns_server(obj_dict, db_conn)
# end http_put
@classmethod
def http_put_fail(cls, id, fq_name, obj_dict, db_conn):
# undo any state change done by http_put function
return True, ""
# end http_put_fail
@classmethod
def http_delete(cls, id, obj_dict, db_conn):
vdns_name = ":".join(obj_dict['fq_name'])
if 'parent_uuid' in obj_dict:
domain_uuid = obj_dict['parent_uuid']
domain_id = {'uuid': domain_uuid}
try:
(read_ok, read_result) = db_conn.dbe_read('domain', domain_id)
except cfgm_common.exceptions.NoIdError:
return (
False,
(500, "Error Domain %s not found" %(domain_id)))
if not read_ok:
return (
False,
(500, "Internal error : Virtual DNS is not in a domain"))
virtual_DNSs = read_result.get('virtual_DNSs', [])
for vdns in virtual_DNSs:
vdns_uuid = vdns['uuid']
vdns_id = {'uuid': vdns_uuid}
try:
(read_ok, read_result) = db_conn.dbe_read('virtual-DNS',
vdns_id)
except cfgm_common.exceptions.NoIdError:
continue
if not read_ok:
return (
False,
(500,
"Internal error : Unable to read Virtual DNS data"))
vdns_data = read_result['virtual_DNS_data']
if 'next_virtual_DNS' in vdns_data:
if vdns_data['next_virtual_DNS'] == vdns_name:
return (
False,
(403,
"Virtual DNS server is referred"
" by other virtual DNS servers"))
return True, ""
# end http_delete
@classmethod
def http_delete_fail(cls, id, obj_dict, db_conn):
# undo any state change done by http_delete function
return True, ""
# end http_delete_fail
@classmethod
def is_valid_dns_name(cls, name):
if len(name) > 255:
return False
if name.endswith("."): # A single trailing dot is legal
# strip exactly one dot from the right, if present
name = name[:-1]
disallowed = re.compile("[^A-Z\d-]", re.IGNORECASE)
return all( # Split by labels and verify individually
(label and len(label) <= 63 # length is within proper range
# no bordering hyphens
and not label.startswith("-") and not label.endswith("-")
and not disallowed.search(label)) # contains only legal char
for label in name.split("."))
# end is_valid_dns_name
@classmethod
def is_valid_ipv4_address(cls, address):
parts = address.split(".")
if len(parts) != 4:
return False
for item in parts:
try:
if not 0 <= int(item) <= 255:
return False
except ValueError:
return False
return True
# end is_valid_ipv4_address
@classmethod
def validate_dns_server(cls, obj_dict, db_conn):
if 'fq_name' in obj_dict:
virtual_dns = obj_dict['fq_name'][1]
disallowed = re.compile("[^A-Z\d-]", re.IGNORECASE)
if disallowed.search(virtual_dns) or virtual_dns.startswith("-"):
return (False, (403,
"Special characters are not allowed in " +
"Virtual DNS server name"))
vdns_data = obj_dict['virtual_DNS_data']
if not cls.is_valid_dns_name(vdns_data['domain_name']):
return (
False,
(403, "Domain name does not adhere to DNS name requirements"))
record_order = ["fixed", "random", "round-robin"]
if not str(vdns_data['record_order']).lower() in record_order:
return (False, (403, "Invalid value for record order"))
ttl = vdns_data['default_ttl_seconds']
if ttl < 0 or ttl > 2147483647:
return (False, (403, "Invalid value for TTL"))
if 'next_virtual_DNS' in vdns_data:
vdns_next = vdns_data['next_virtual_DNS']
if not vdns_next or vdns_next is None:
return True, ""
next_vdns = vdns_data['next_virtual_DNS'].split(":")
# check that next vdns exists
try:
next_vdns_uuid = db_conn.fq_name_to_uuid(
'virtual_DNS', next_vdns)
except Exception as e:
if not cls.is_valid_ipv4_address(
vdns_data['next_virtual_DNS']):
return (
False,
(403,
"Invalid Virtual Forwarder(next virtual dns server)"))
else:
return True, ""
# check that next virtual dns servers arent referring to each other
# above check doesnt allow during create, but entry could be
# modified later
next_vdns_id = {'uuid': next_vdns_uuid}
try:
(read_ok, read_result) = db_conn.dbe_read(
'virtual-DNS', next_vdns_id)
except cfgm_common.exceptions.NoIdError:
read_ok = False
if read_ok:
next_vdns_data = read_result['virtual_DNS_data']
if 'next_virtual_DNS' in next_vdns_data:
vdns_name = ":".join(obj_dict['fq_name'])
if next_vdns_data['next_virtual_DNS'] == vdns_name:
return (
False,
(403,
"Cannot have Virtual DNS Servers "
"referring to each other"))
return True, ""
# end validate_dns_server
# end class VirtualDnsServer
class VirtualDnsRecordServer(VirtualDnsRecordServerGen):
generate_default_instance = False
@classmethod
def http_post_collection(cls, tenant_name, obj_dict, db_conn):
return cls.validate_dns_record(obj_dict, db_conn)
# end http_post_collection
@classmethod
def http_put(cls, id, fq_name, obj_dict, db_conn):
return cls.validate_dns_record(obj_dict, db_conn)
# end http_put
@classmethod
def http_put_fail(cls, id, fq_name, obj_dict, db_conn):
# undo any state change done by http_put function
return True, ""
# end http_put_fail
@classmethod
def http_delete(cls, id, obj_dict, db_conn):
return True, ""
# end http_delete
@classmethod
def http_delete_fail(cls, id, obj_dict, db_conn):
# undo any state change done by http_delete function
return True, ""
# end http_delete_fail
@classmethod
def validate_dns_record(cls, obj_dict, db_conn):
rec_data = obj_dict['virtual_DNS_record_data']
rec_types = ["a", "cname", "ptr", "ns"]
rec_type = str(rec_data['record_type']).lower()
if not rec_type in rec_types:
return (False, (403, "Invalid record type"))
if str(rec_data['record_class']).lower() != "in":
return (False, (403, "Invalid record class"))
rec_name = rec_data['record_name']
rec_value = rec_data['record_data']
# check rec_name validity
if rec_type == "ptr":
if (not VirtualDnsServer.is_valid_ipv4_address(rec_name) and
not "in-addr.arpa" in rec_name.lower()):
return (
False,
(403,
"PTR Record name has to be IP address"
" or reverse.ip.in-addr.arpa"))
elif not VirtualDnsServer.is_valid_dns_name(rec_name):
return (
False,
(403, "Record name does not adhere to DNS name requirements"))
# check rec_data validity
if rec_type == "a":
if not VirtualDnsServer.is_valid_ipv4_address(rec_value):
return (False, (403, "Invalid IP address"))
elif rec_type == "cname" or rec_type == "ptr" or rec_type == "mx":
if not VirtualDnsServer.is_valid_dns_name(rec_value):
return (
False,
(403,
"Record data does not adhere to DNS name requirements"))
elif rec_type == "ns":
try:
vdns_name = rec_value.split(":")
vdns_uuid = db_conn.fq_name_to_uuid('virtual_DNS', vdns_name)
except Exception as e:
if (not VirtualDnsServer.is_valid_ipv4_address(rec_value) and
not VirtualDnsServer.is_valid_dns_name(rec_value)):
return (
False,
(403, "Invalid virtual dns server in record data"))
ttl = rec_data['record_ttl_seconds']
if ttl < 0 or ttl > 2147483647:
return (False, (403, "Invalid value for TTL"))
if rec_type == "mx":
preference = rec_data['record_mx_preference']
if preference < 0 or preference > 65535:
return (False, (403, "Invalid value for MX record preference"))
return True, ""
# end validate_dns_record
# end class VirtualDnsRecordServer
def _check_policy_rules(entries, network_policy_rule=False):
if not entries:
return True, ""
for rule in entries.get('policy_rule') or []:
if not rule.get('rule_uuid'):
rule['rule_uuid'] = str(uuid.uuid4())
protocol = rule['protocol']
if protocol.isdigit():
if int(protocol) < 0 or int(protocol) > 255:
return (False, (400, 'Rule with invalid protocol : %s' %
protocol))
else:
valids = ['any', 'icmp', 'tcp', 'udp']
if protocol not in valids:
return (False, (400, 'Rule with invalid protocol : %s' %
protocol))
if network_policy_rule:
if rule.get('action_list') is None:
return (False, (400, 'Action is required'))
else:
src_sg = [addr.get('security_group') for addr in
rule.get('src_addresses', [])]
dst_sg = [addr.get('security_group') for addr in
rule.get('dst_addresses', [])]
if ('local' not in src_sg and 'local' not in dst_sg):
return (False, (400, "At least one of source or destination"