openstack/neutron
Code Issues Proposed changes
c794227941
neutron/neutron/neutron_plugin_base_v2.py
Brian Haley 08a60f7483 Remove usage of six.add_metaclass 
With python 3.x, classes can use the metaclass= logic
to not require usage of the six library.

One step in removing all of six usage from neutron.

Change-Id: I2f815e412d9a96eb5faf2b3bb3a1e393a9db9309
2020-05-21 14:41:18 -04:00

418 lines
17 KiB
Python
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# Copyright 2011 VMware, 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.
"""
v2 Neutron Plug-in API specification.
:class:`NeutronPluginBaseV2` provides the definition of minimum set of
methods that needs to be implemented by a v2 Neutron Plug-in.
"""
import abc
from neutron_lib.services import base as base_services
class NeutronPluginBaseV2(base_services.WorkerBase, metaclass=abc.ABCMeta):
@abc.abstractmethod
def create_subnet(self, context, subnet):
"""Create a subnet.
Create a subnet, which represents a range of IP addresses
that can be allocated to devices
:param context: neutron api request context
:param subnet: dictionary describing the subnet, with keys
as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP` object
in :file:`neutron/api/v2/attributes.py`. All keys will
be populated.
"""
pass
@abc.abstractmethod
def update_subnet(self, context, id, subnet):
"""Update values of a subnet.
:param context: neutron api request context
:param id: UUID representing the subnet to update.
:param subnet: dictionary with keys indicating fields to update.
valid keys are those that have a value of True for
'allow_put' as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`.
"""
pass
@abc.abstractmethod
def get_subnet(self, context, id, fields=None):
"""Retrieve a subnet.
:param context: neutron api request context
:param id: UUID representing the subnet to fetch.
:param fields: a list of strings that are valid keys in a
subnet dictionary as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Only these fields
will be returned.
"""
pass
@abc.abstractmethod
def get_subnets(self, context, filters=None, fields=None,
sorts=None, limit=None, marker=None, page_reverse=False):
"""Retrieve a list of subnets.
The contents of the list depends on
the identity of the user making the request (as indicated by the
context) as well as any filters.
:param context: neutron api request context
:param filters: a dictionary with keys that are valid keys for
a subnet as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP`
object in :file:`neutron/api/v2/attributes.py`.
Values in this dictionary are an iterable containing
values that will be used for an exact match comparison
for that value. Each result returned by this
function will have matched one of the values for each
key in filters.
:param fields: a list of strings that are valid keys in a
subnet dictionary as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Only these fields
will be returned.
"""
pass
def get_subnets_count(self, context, filters=None):
"""Return the number of subnets.
The result depends on the identity of
the user making the request (as indicated by the context) as well as
any filters.
:param context: neutron api request context
:param filters: a dictionary with keys that are valid keys for
a network as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Values in this
dictionary are an iterable containing values that
will be used for an exact match comparison for that
value. Each result returned by this function will
have matched one of the values for each key in filters.
.. note:: this method is optional, as it was not part of the originally
defined plugin API.
"""
raise NotImplementedError()
@abc.abstractmethod
def delete_subnet(self, context, id):
"""Delete a subnet.
:param context: neutron api request context
:param id: UUID representing the subnet to delete.
"""
pass
def create_subnetpool(self, context, subnetpool):
"""Create a subnet pool.
:param context: neutron api request context
:param subnetpool: Dictionary representing the subnetpool to create.
"""
raise NotImplementedError()
def update_subnetpool(self, context, id, subnetpool):
"""Update a subnet pool.
:param context: neutron api request context
:param subnetpool: Dictionary representing the subnetpool attributes
to update.
"""
raise NotImplementedError()
def get_subnetpool(self, context, id, fields=None):
"""Show a subnet pool.
:param context: neutron api request context
:param id: The UUID of the subnetpool to show.
"""
raise NotImplementedError()
def get_subnetpools(self, context, filters=None, fields=None,
sorts=None, limit=None, marker=None,
page_reverse=False):
"""Retrieve list of subnet pools."""
raise NotImplementedError()
def delete_subnetpool(self, context, id):
"""Delete a subnet pool.
:param context: neutron api request context
:param id: The UUID of the subnet pool to delete.
"""
raise NotImplementedError()
@abc.abstractmethod
def create_network(self, context, network):
"""Create a network.
Create a network, which represents an L2 network segment which
can have a set of subnets and ports associated with it.
:param context: neutron api request context
:param network: dictionary describing the network, with keys
as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP` object
in :file:`neutron/api/v2/attributes.py`. All keys will
be populated.
"""
pass
@abc.abstractmethod
def update_network(self, context, id, network):
"""Update values of a network.
:param context: neutron api request context
:param id: UUID representing the network to update.
:param network: dictionary with keys indicating fields to update.
valid keys are those that have a value of True for
'allow_put' as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`.
"""
pass
@abc.abstractmethod
def get_network(self, context, id, fields=None):
"""Retrieve a network.
:param context: neutron api request context
:param id: UUID representing the network to fetch.
:param fields: a list of strings that are valid keys in a
network dictionary as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Only these fields
will be returned.
"""
pass
@abc.abstractmethod
def get_networks(self, context, filters=None, fields=None,
sorts=None, limit=None, marker=None, page_reverse=False):
"""Retrieve a list of networks.
The contents of the list depends on
the identity of the user making the request (as indicated by the
context) as well as any filters.
:param context: neutron api request context
:param filters: a dictionary with keys that are valid keys for
a network as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Values in this
dictionary are an iterable containing values that will
be used for an exact match comparison for that value.
Each result returned by this function will have matched
one of the values for each key in filters.
:param fields: a list of strings that are valid keys in a
network dictionary as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Only these fields
will be returned.
"""
pass
def get_networks_count(self, context, filters=None):
"""Return the number of networks.
The result depends on the identity
of the user making the request (as indicated by the context) as well
as any filters.
:param context: neutron api request context
:param filters: a dictionary with keys that are valid keys for
a network as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object
in :file:`neutron/api/v2/attributes.py`. Values in
this dictionary are an iterable containing values that
will be used for an exact match comparison for that
value. Each result returned by this function will have
matched one of the values for each key in filters.
NOTE: this method is optional, as it was not part of the originally
defined plugin API.
"""
raise NotImplementedError()
@abc.abstractmethod
def delete_network(self, context, id):
"""Delete a network.
:param context: neutron api request context
:param id: UUID representing the network to delete.
"""
pass
@abc.abstractmethod
def create_port(self, context, port):
"""Create a port.
Create a port, which is a connection point of a device (e.g., a VM
NIC) to attach to a L2 neutron network.
:param context: neutron api request context
:param port: dictionary describing the port, with keys as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. All keys will be
populated.
"""
pass
@abc.abstractmethod
def update_port(self, context, id, port):
"""Update values of a port.
:param context: neutron api request context
:param id: UUID representing the port to update.
:param port: dictionary with keys indicating fields to update.
valid keys are those that have a value of True for
'allow_put' as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP`
object in :file:`neutron/api/v2/attributes.py`.
"""
pass
@abc.abstractmethod
def get_port(self, context, id, fields=None):
"""Retrieve a port.
:param context: neutron api request context
:param id: UUID representing the port to fetch.
:param fields: a list of strings that are valid keys in a port
dictionary as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Only these fields
will be returned.
"""
pass
@abc.abstractmethod
def get_ports(self, context, filters=None, fields=None,
sorts=None, limit=None, marker=None, page_reverse=False):
"""Retrieve a list of ports.
The contents of the list depends on the identity of the user making
the request (as indicated by the context) as well as any filters.
:param context: neutron api request context
:param filters: a dictionary with keys that are valid keys for
a port as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP`
object in :file:`neutron/api/v2/attributes.py`. Values
in this dictionary are an iterable containing values
that will be used for an exact match comparison for
that value. Each result returned by this function will
have matched one of the values for each key in filters.
:param fields: a list of strings that are valid keys in a
port dictionary as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Only these fields
will be returned.
"""
pass
def get_ports_count(self, context, filters=None):
"""Return the number of ports.
The result depends on the identity of the user making the request
(as indicated by the context) as well as any filters.
:param context: neutron api request context
:param filters: a dictionary with keys that are valid keys for
a network as listed in the
:obj:`RESOURCE_ATTRIBUTE_MAP` object in
:file:`neutron/api/v2/attributes.py`. Values in this
dictionary are an iterable containing values that will
be used for an exact match comparison for that value.
Each result returned by this function will have matched
one of the values for each key in filters.
.. note:: this method is optional, as it was not part of the originally
defined plugin API.
"""
raise NotImplementedError()
@abc.abstractmethod
def delete_port(self, context, id):
"""Delete a port.
:param context: neutron api request context
:param id: UUID representing the port to delete.
"""
pass
def start_rpc_listeners(self):
"""Start the RPC listeners.
Most plugins start RPC listeners implicitly on initialization. In
order to support multiple process RPC, the plugin needs to expose
control over when this is started.
.. note:: this method is optional, as it was not part of the originally
defined plugin API.
"""
raise NotImplementedError()
def start_rpc_state_reports_listener(self):
"""Start the RPC listeners consuming state reports queue.
This optional method creates rpc consumer for REPORTS queue only.
.. note:: this method is optional, as it was not part of the originally
defined plugin API.
"""
raise NotImplementedError()
def rpc_workers_supported(self):
"""Return whether the plugin supports multiple RPC workers.
A plugin that supports multiple RPC workers should override the
start_rpc_listeners method to ensure that this method returns True and
that start_rpc_listeners is called at the appropriate time.
Alternately, a plugin can override this method to customize detection
of support for multiple rpc workers
.. note:: this method is optional, as it was not part of the originally
defined plugin API.
"""
return (self.__class__.start_rpc_listeners !=
NeutronPluginBaseV2.start_rpc_listeners)
def rpc_state_report_workers_supported(self):
"""Return whether the plugin supports state report RPC workers.
.. note:: this method is optional, as it was not part of the originally
defined plugin API.
"""
return (self.__class__.start_rpc_state_reports_listener !=
NeutronPluginBaseV2.start_rpc_state_reports_listener)
def has_native_datastore(self):
"""Return True if the plugin uses Neutron's native datastore.
.. note:: plugins like ML2 should override this method and return True.
"""
return False
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