OpenStack Compute (Nova)
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# Copyright 2012 SINA Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""The instance interfaces extension."""
import webob
from webob import exc
from nova.api.openstack import api_version_request
from nova.api.openstack import common
from nova.api.openstack.compute.schemas import attach_interfaces
from nova.api.openstack import wsgi
from nova.api import validation
from nova.compute import api as compute
from nova import exception
from nova.i18n import _
from nova.network import neutron
from nova import objects
from nova.policies import attach_interfaces as ai_policies
def _translate_interface_attachment_view(context, port_info, show_tag=False):
"""Maps keys for interface attachment details view.
:param port_info: dict of port details from the networking service
:param show_tag: If True, includes the "tag" key in the returned dict,
else the "tag" entry is omitted (default: False)
:returns: dict of a subset of details about the port and optionally the
tag associated with the VirtualInterface record in the nova database
"""
info = {
'net_id': port_info['network_id'],
'port_id': port_info['id'],
'mac_addr': port_info['mac_address'],
'port_state': port_info['status'],
'fixed_ips': port_info.get('fixed_ips', None),
}
if show_tag:
# Get the VIF for this port (if one exists - VirtualInterface records
# did not exist for neutron ports until the Newton release).
vif = objects.VirtualInterface.get_by_uuid(context, port_info['id'])
info['tag'] = vif.tag if vif else None
return info
class InterfaceAttachmentController(wsgi.Controller):
"""The interface attachment API controller for the OpenStack API."""
def __init__(self):
super(InterfaceAttachmentController, self).__init__()
self.compute_api = compute.API()
self.network_api = neutron.API()
@wsgi.expected_errors((404, 501))
def index(self, req, server_id):
"""Returns the list of interface attachments for a given instance."""
context = req.environ['nova.context']
instance = common.get_instance(self.compute_api, context, server_id)
context.can(ai_policies.POLICY_ROOT % 'list',
target={'project_id': instance.project_id})
search_opts = {'device_id': instance.uuid}
try:
data = self.network_api.list_ports(context, **search_opts)
except exception.NotFound as e:
raise exc.HTTPNotFound(explanation=e.format_message())
except NotImplementedError:
common.raise_feature_not_supported()
# If showing tags, get the VirtualInterfaceList for the server and
# map VIFs by port ID. Note that VirtualInterface records did not
# exist for neutron ports until the Newton release so it's OK if we
# are missing records for old servers.
show_tag = api_version_request.is_supported(req, '2.70')
tag_per_port_id = {}
if show_tag:
vifs = objects.VirtualInterfaceList.get_by_instance_uuid(
context, server_id)
tag_per_port_id = {vif.uuid: vif.tag for vif in vifs}
results = []
ports = data.get('ports', [])
for port in ports:
# Note that we do not pass show_tag=show_tag to
# _translate_interface_attachment_view because we are handling it
# ourselves here since we have the list of VIFs which is better
# for performance than doing a DB query per port.
info = _translate_interface_attachment_view(context, port)
if show_tag:
info['tag'] = tag_per_port_id.get(port['id'])
results.append(info)
return {'interfaceAttachments': results}
@wsgi.expected_errors((403, 404))
def show(self, req, server_id, id):
"""Return data about the given interface attachment."""
context = req.environ['nova.context']
instance = common.get_instance(self.compute_api, context, server_id)
context.can(ai_policies.POLICY_ROOT % 'show',
target={'project_id': instance.project_id})
port_id = id
try:
port_info = self.network_api.show_port(context, port_id)
except exception.PortNotFound as e:
raise exc.HTTPNotFound(explanation=e.format_message())
except exception.Forbidden as e:
raise exc.HTTPForbidden(explanation=e.format_message())
if port_info['port']['device_id'] != server_id:
msg = _("Instance %(instance)s does not have a port with id "
"%(port)s") % {'instance': server_id, 'port': port_id}
raise exc.HTTPNotFound(explanation=msg)
return {'interfaceAttachment':
_translate_interface_attachment_view(
context, port_info['port'],
show_tag=api_version_request.is_supported(req, '2.70'))}
@wsgi.expected_errors((400, 403, 404, 409, 500, 501))
@validation.schema(attach_interfaces.create, '2.0', '2.48')
@validation.schema(attach_interfaces.create_v249, '2.49')
def create(self, req, server_id, body):
"""Attach an interface to an instance."""
context = req.environ['nova.context']
instance = common.get_instance(self.compute_api, context, server_id)
context.can(ai_policies.POLICY_ROOT % 'create',
target={'project_id': instance.project_id})
network_id = None
port_id = None
req_ip = None
tag = None
if body:
attachment = body['interfaceAttachment']
network_id = attachment.get('net_id', None)
port_id = attachment.get('port_id', None)
tag = attachment.get('tag', None)
try:
req_ip = attachment['fixed_ips'][0]['ip_address']
except Exception:
pass
if network_id and port_id:
msg = _("Must not input both network_id and port_id")
raise exc.HTTPBadRequest(explanation=msg)
if req_ip and not network_id:
msg = _("Must input network_id when request IP address")
raise exc.HTTPBadRequest(explanation=msg)
try:
vif = self.compute_api.attach_interface(context,
instance, network_id, port_id, req_ip, tag=tag)
except (exception.InterfaceAttachFailedNoNetwork,
exception.NetworkAmbiguous,
exception.NoMoreFixedIps,
exception.PortNotUsable,
exception.AttachInterfaceNotSupported,
exception.SecurityGroupCannotBeApplied,
exception.NetworkInterfaceTaggedAttachNotSupported,
exception.NetworksWithQoSPolicyNotSupported,
exception.InterfaceAttachPciClaimFailed,
exception.InterfaceAttachResourceAllocationFailed) as e:
raise exc.HTTPBadRequest(explanation=e.format_message())
except (exception.InstanceIsLocked,
exception.FixedIpAlreadyInUse,
exception.PortInUse) as e:
raise exc.HTTPConflict(explanation=e.format_message())
except (exception.PortNotFound,
exception.NetworkNotFound) as e:
raise exc.HTTPNotFound(explanation=e.format_message())
except exception.PortLimitExceeded as e:
raise exc.HTTPForbidden(explanation=e.format_message())
except exception.InterfaceAttachFailed as e:
raise webob.exc.HTTPInternalServerError(
explanation=e.format_message())
except exception.InstanceInvalidState as state_error:
common.raise_http_conflict_for_instance_invalid_state(state_error,
'attach_interface', server_id)
return self.show(req, server_id, vif['id'])
@wsgi.response(202)
@wsgi.expected_errors((404, 409, 501))
def delete(self, req, server_id, id):
"""Detach an interface from an instance."""
context = req.environ['nova.context']
instance = common.get_instance(self.compute_api, context, server_id,
expected_attrs=['device_metadata'])
context.can(ai_policies.POLICY_ROOT % 'delete',
target={'project_id': instance.project_id})
port_id = id
try:
self.compute_api.detach_interface(context,
instance, port_id=port_id)
except exception.PortNotFound as e:
raise exc.HTTPNotFound(explanation=e.format_message())
except exception.InstanceIsLocked as e:
raise exc.HTTPConflict(explanation=e.format_message())
except NotImplementedError:
common.raise_feature_not_supported()
except exception.InstanceInvalidState as state_error:
common.raise_http_conflict_for_instance_invalid_state(state_error,
'detach_interface', server_id)