89 lines
3.1 KiB
Python
89 lines
3.1 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 oslo_log import log
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from vmware_nsxlib.v3 import constants
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from vmware_nsxlib.v3 import utils
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LOG = log.getLogger(__name__)
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class NsxLibNativeDhcp(utils.NsxLibApiBase):
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def build_static_routes(self, gateway_ip, cidr, host_routes):
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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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static_routes = [{'network': cidr, 'next_hop': '0.0.0.0'}]
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# Copy routes from subnet host_routes attribute.
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if host_routes:
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for hr in 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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static_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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static_routes.append({'network': constants.IPv4_ANY,
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'next_hop': gateway_ip})
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return static_routes, gateway_ip
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def build_server_name(self, net_name, net_id):
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return utils.get_name_and_uuid(net_name or 'dhcpserver', net_id)
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def build_server(self, name, ip_address, cidr, gateway_ip,
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dns_domain=None, dns_nameservers=None,
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host_routes=None,
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dhcp_profile_id=None,
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tags=None):
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# Prepare the configuration for a new logical DHCP server.
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server_ip = "%s/%u" % (ip_address,
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netaddr.IPNetwork(cidr).prefixlen)
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if not dns_domain:
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dns_domain = self.nsxlib_config.dns_domain
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if not dns_nameservers:
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dns_nameservers = self.nsxlib_config.dns_nameservers
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if not utils.is_attr_set(gateway_ip):
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gateway_ip = None
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static_routes, gateway_ip = self.build_static_routes(
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gateway_ip, cidr, host_routes)
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options = {'option121': {'static_routes': static_routes}}
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body = {'name': name,
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'server_ip': server_ip,
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'dns_nameservers': dns_nameservers,
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'domain_name': dns_domain,
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'gateway_ip': gateway_ip,
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'options': options,
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'tags': tags}
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if dhcp_profile_id:
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body['dhcp_profile_id'] = dhcp_profile_id
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return body
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