128 lines
4.6 KiB
Python
128 lines
4.6 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import drydock_provisioner.drivers.node.maasdriver.models.base as model_base
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import drydock_provisioner.drivers.node.maasdriver.models.iprange as maas_iprange
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import drydock_provisioner.drivers.node.maasdriver.models.staticroute as maas_route
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class Subnet(model_base.ResourceBase):
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"""Model for a subnet."""
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resource_url = 'subnets/{resource_id}/'
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fields = [
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'resource_id', 'name', 'description', 'fabric', 'vlan', 'vid', 'cidr',
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'gateway_ip', 'rdns_mode', 'allow_proxy', 'dns_servers'
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]
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json_fields = [
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'name', 'description', 'vlan', 'cidr', 'gateway_ip', 'rdns_mode',
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'allow_proxy', 'dns_servers'
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]
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def __init__(self, api_client, **kwargs):
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super(Subnet, self).__init__(api_client, **kwargs)
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def add_address_range(self, addr_range):
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"""
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Add a reserved or dynamic (DHCP) address range to this subnet
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:param addr_range: Dict with keys 'type', 'start', 'end'
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"""
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# TODO Do better overlap detection. For now we just check if the exact range exists
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current_ranges = maas_iprange.IpRanges(self.api_client)
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current_ranges.refresh()
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exists = current_ranges.query({
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'start_ip':
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addr_range.get('start', None),
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'end_ip':
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addr_range.get('end', None)
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})
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if len(exists) > 0:
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self.logger.info(
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'Address range from %s to %s already exists, skipping.' %
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(addr_range.get('start', None), addr_range.get('end', None)))
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return
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# Static ranges are what is left after reserved (not assigned by MaaS)
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# and DHCP ranges are removed from a subnet
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if addr_range.get('type', None) in ['reserved', 'dhcp']:
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range_type = addr_range.get('type', None)
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if range_type == 'dhcp':
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range_type = 'dynamic'
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maas_range = maas_iprange.IpRange(
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self.api_client,
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comment="Configured by Drydock",
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subnet=self.resource_id,
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type=range_type,
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start_ip=addr_range.get('start', None),
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end_ip=addr_range.get('end', None))
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maas_ranges = maas_iprange.IpRanges(self.api_client)
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maas_ranges.add(maas_range)
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def add_static_route(self, dest_subnet, gateway, metric=100):
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"""Add a static route to ``dest_subnet`` via ``gateway`` to this source subnet.
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:param dest_subnet: maas resource_id of the destination subnet
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:param gateway: string IP address of the nexthop gateway
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:param metric: weight to assign this gateway
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"""
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sr = maas_route.StaticRoutes(self.api_client)
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current_route = sr.singleton({
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'source': self.resource_id,
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'destination': dest_subnet
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})
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if current_route is not None:
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current_route.delete()
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new_route = maas_route.StaticRoute(
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self.api_client,
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source=self.resource_id,
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destination=dest_subnet,
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gateway_ip=gateway,
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metric=metric)
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new_route = sr.add(new_route)
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return new_route
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@classmethod
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def from_dict(cls, api_client, obj_dict):
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"""
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Because MaaS decides to replace the VLAN id with the
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representation of the VLAN, we must reverse it for a true
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representation of the resource
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"""
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refined_dict = {k: obj_dict.get(k, None) for k in cls.fields}
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if 'id' in obj_dict.keys():
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refined_dict['resource_id'] = obj_dict.get('id')
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if isinstance(refined_dict.get('vlan', None), dict):
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refined_dict['fabric'] = refined_dict['vlan']['fabric_id']
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refined_dict['vlan'] = refined_dict['vlan']['id']
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i = cls(api_client, **refined_dict)
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return i
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class Subnets(model_base.ResourceCollectionBase):
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"""Model for collection of subnets."""
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collection_url = 'subnets/'
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collection_resource = Subnet
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def __init__(self, api_client, **kwargs):
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super(Subnets, self).__init__(api_client)
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