c6f7c2c082
When building the native dhcp server config we use the dns domain/nameservers from the network/subnet objects. If not defined, we use the global values in the nsxlib config. Now adding optional default parameters to be used instead of global ones. This will enable using different configuration per network availability zone. Change-Id: I38b458e2c530f29a0e5518257ed3041d0610df25
80 lines
3.3 KiB
Python
80 lines
3.3 KiB
Python
# Copyright 2016 VMware, Inc.
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# All Rights Reserved
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import netaddr
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from neutron_lib.api import validators
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from neutron_lib import constants
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from vmware_nsxlib.v3 import utils
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class NsxLibNativeDhcp(utils.NsxLibApiBase):
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def build_server_config(self, network, subnet, port, tags,
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default_dns_nameservers=None,
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default_dns_domain=None):
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# Prepare the configuration for a new logical DHCP server.
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server_ip = "%s/%u" % (port['fixed_ips'][0]['ip_address'],
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netaddr.IPNetwork(subnet['cidr']).prefixlen)
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dns_nameservers = subnet['dns_nameservers']
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if not dns_nameservers or not validators.is_attr_set(dns_nameservers):
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# use the default one , or the globally configured one
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if default_dns_nameservers is not None:
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dns_nameservers = default_dns_nameservers
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else:
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dns_nameservers = self.nsxlib_config.dns_nameservers
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gateway_ip = subnet['gateway_ip']
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if not validators.is_attr_set(gateway_ip):
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gateway_ip = None
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# The following code is based on _generate_opts_per_subnet() in
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# neutron/agent/linux/dhcp.py. It prepares DHCP options for a subnet.
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# Add route for directly connected network.
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host_routes = [{'network': subnet['cidr'], 'next_hop': '0.0.0.0'}]
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# Copy routes from subnet host_routes attribute.
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for hr in subnet['host_routes']:
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if hr['destination'] == constants.IPv4_ANY:
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if not gateway_ip:
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gateway_ip = hr['nexthop']
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else:
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host_routes.append({'network': hr['destination'],
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'next_hop': hr['nexthop']})
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# If gateway_ip is defined, add default route via this gateway.
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if gateway_ip:
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host_routes.append({'network': constants.IPv4_ANY,
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'next_hop': gateway_ip})
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options = {'option121': {'static_routes': host_routes}}
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name = utils.get_name_and_uuid(network['name'] or 'dhcpserver',
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network['id'])
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dns_domain = network.get('dns_domain')
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if dns_domain:
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domain_name = dns_domain['dns_domain']
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else:
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# use the default one , or the globally configured one
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if default_dns_domain is not None:
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domain_name = default_dns_domain
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else:
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domain_name = self.nsxlib_config.dns_domain
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return {'name': name,
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'server_ip': server_ip,
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'dns_nameservers': dns_nameservers,
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'domain_name': domain_name,
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'gateway_ip': gateway_ip,
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'options': options,
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'tags': tags}
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