229 lines
8.9 KiB
Python
229 lines
8.9 KiB
Python
# Copyright (c) 2014 Freescale Semiconductor
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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
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# 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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from oslo_log import helpers as log_helpers
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from oslo_log import log as logging
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from neutron.common import constants as n_const
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from neutron.extensions import portbindings
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from neutron.i18n import _LI
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from neutron.plugins.common import constants
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from neutron.plugins.ml2 import driver_api as api
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from neutron.plugins.ml2.drivers.freescale import config # noqa
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LOG = logging.getLogger(__name__)
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class FslsdnMechanismDriver(api.MechanismDriver):
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"""Freescale SDN OS Mechanism Driver for ML2 Plugin."""
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@log_helpers.log_method_call
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def initialize(self):
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"""Initialize the Mechanism driver."""
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self.vif_type = portbindings.VIF_TYPE_OVS
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self.vif_details = {portbindings.CAP_PORT_FILTER: True}
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LOG.info(_LI("Initializing CRD client... "))
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self._crdclient = config.get_crdclient()
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# Network Management
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@staticmethod
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@log_helpers.log_method_call
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def _prepare_crd_network(network, segments):
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"""Helper function to create 'network' data."""
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return {'network':
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{'network_id': network['id'],
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'tenant_id': network['tenant_id'],
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'name': network['name'],
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'status': network['status'],
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'admin_state_up': network['admin_state_up'],
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'segments': segments,
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}}
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def create_network_postcommit(self, context):
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"""Send create_network data to CRD service."""
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network = context.current
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segments = context.network_segments
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body = self._prepare_crd_network(network, segments)
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self._crdclient.create_network(body=body)
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LOG.debug("create_network update sent to CRD Server: %s", body)
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def update_network_postcommit(self, context):
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"""Send update_network data to CRD service."""
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network = context.current
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segments = context.network_segments
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body = self._prepare_crd_network(network, segments)
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self._crdclient.update_network(network['id'], body=body)
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LOG.debug("update_network update sent to CRD Server: %s", body)
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def delete_network_postcommit(self, context):
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"""Send delete_network data to CRD service."""
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network = context.current
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self._crdclient.delete_network(network['id'])
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LOG.debug(
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"delete_network update sent to CRD Server: %s",
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network['id'])
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# Port Management
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@staticmethod
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def _prepare_crd_port(port):
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"""Helper function to prepare 'port' data."""
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crd_subnet_id = ''
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crd_ipaddress = ''
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crd_sec_grps = ''
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# Since CRD accepts one Fixed IP,
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# so handle only one fixed IP per port.
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if len(port['fixed_ips']) > 1:
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LOG.debug("More than one fixed IP exists - using first one.")
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# check empty fixed_ips list, move on if one or more exists
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if len(port['fixed_ips']) != 0:
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crd_subnet_id = port['fixed_ips'][0]['subnet_id']
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crd_ipaddress = port['fixed_ips'][0]['ip_address']
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LOG.debug("Handling fixed IP {subnet_id:%(subnet)s, "
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"ip_address:%(ip)s}",
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{'subnet': crd_subnet_id, 'ip': crd_ipaddress})
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else:
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LOG.debug("No fixed IPs found.")
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if 'security_groups' in port:
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crd_sec_grps = ','.join(port['security_groups'])
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return {'port':
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{'port_id': port['id'],
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'tenant_id': port['tenant_id'],
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'name': port['name'],
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'network_id': port['network_id'],
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'subnet_id': crd_subnet_id,
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'mac_address': port['mac_address'],
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'device_id': port['device_id'],
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'ip_address': crd_ipaddress,
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'admin_state_up': port['admin_state_up'],
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'status': port['status'],
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'device_owner': port['device_owner'],
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'security_groups': crd_sec_grps,
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}}
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def create_port_postcommit(self, context):
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"""Send create_port data to CRD service."""
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port = context.current
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body = self._prepare_crd_port(port)
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self._crdclient.create_port(body=body)
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LOG.debug("create_port update sent to CRD Server: %s", body)
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def delete_port_postcommit(self, context):
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"""Send delete_port data to CRD service."""
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port = context.current
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self._crdclient.delete_port(port['id'])
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LOG.debug("delete_port update sent to CRD Server: %s", port['id'])
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# Subnet Management
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@staticmethod
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@log_helpers.log_method_call
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def _prepare_crd_subnet(subnet):
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"""Helper function to prepare 'subnet' data."""
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crd_allocation_pools = ''
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crd_dns_nameservers = ''
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crd_host_routes = ''
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# Handling Allocation IPs
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if 'allocation_pools' in subnet:
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a_pools = subnet['allocation_pools']
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crd_allocation_pools = ','.join(["%s-%s" % (p['start'],
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p['end'])
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for p in a_pools])
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# Handling Host Routes
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if 'host_routes' in subnet:
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crd_host_routes = ','.join(["%s-%s" % (r['destination'],
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r['nexthop'])
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for r in subnet['host_routes']])
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# Handling DNS Nameservers
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if 'dns_nameservers' in subnet:
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crd_dns_nameservers = ','.join(subnet['dns_nameservers'])
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# return Subnet Data
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return {'subnet':
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{'subnet_id': subnet['id'],
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'tenant_id': subnet['tenant_id'],
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'name': subnet['name'],
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'network_id': subnet['network_id'],
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'ip_version': subnet['ip_version'],
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'cidr': subnet['cidr'],
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'gateway_ip': subnet['gateway_ip'],
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'dns_nameservers': crd_dns_nameservers,
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'allocation_pools': crd_allocation_pools,
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'host_routes': crd_host_routes,
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}}
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def create_subnet_postcommit(self, context):
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"""Send create_subnet data to CRD service."""
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subnet = context.current
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body = self._prepare_crd_subnet(subnet)
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self._crdclient.create_subnet(body=body)
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LOG.debug("create_subnet update sent to CRD Server: %s", body)
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def update_subnet_postcommit(self, context):
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"""Send update_subnet data to CRD service."""
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subnet = context.current
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body = self._prepare_crd_subnet(subnet)
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self._crdclient.update_subnet(subnet['id'], body=body)
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LOG.debug("update_subnet update sent to CRD Server: %s", body)
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def delete_subnet_postcommit(self, context):
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"""Send delete_subnet data to CRD service."""
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subnet = context.current
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self._crdclient.delete_subnet(subnet['id'])
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LOG.debug("delete_subnet update sent to CRD Server: %s", subnet['id'])
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def bind_port(self, context):
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"""Set porting binding data for use with nova."""
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LOG.debug("Attempting to bind port %(port)s on "
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"network %(network)s",
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{'port': context.current['id'],
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'network': context.network.current['id']})
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# Prepared porting binding data
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for segment in context.segments_to_bind:
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if self.check_segment(segment):
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context.set_binding(segment[api.ID],
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self.vif_type,
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self.vif_details,
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status=n_const.PORT_STATUS_ACTIVE)
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LOG.debug("Bound using segment: %s", segment)
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return
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else:
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LOG.debug("Refusing to bind port for segment ID %(id)s, "
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"segment %(seg)s, phys net %(physnet)s, and "
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"network type %(nettype)s",
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{'id': segment[api.ID],
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'seg': segment[api.SEGMENTATION_ID],
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'physnet': segment[api.PHYSICAL_NETWORK],
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'nettype': segment[api.NETWORK_TYPE]})
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@log_helpers.log_method_call
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def check_segment(self, segment):
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"""Verify a segment is valid for the FSL SDN MechanismDriver."""
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return segment[api.NETWORK_TYPE] in [constants.TYPE_VLAN,
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constants.TYPE_VXLAN]
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