8fb023ed53
Metaplugin needs a fix to support multiple RPC workers properly because a plugin which supports multiple RPC workers cannot initialize RPC connections at plugin initialization. Closes-Bug: #1300570 Change-Id: I584f70abb8969054cd4edc8f914d00f6be930bab
353 lines
14 KiB
Python
353 lines
14 KiB
Python
# Copyright 2011 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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"""
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v2 Neutron Plug-in API specification.
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:class:`NeutronPluginBaseV2` provides the definition of minimum set of
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methods that needs to be implemented by a v2 Neutron Plug-in.
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"""
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import abc
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import six
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@six.add_metaclass(abc.ABCMeta)
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class NeutronPluginBaseV2(object):
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@abc.abstractmethod
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def create_subnet(self, context, subnet):
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"""Create a subnet.
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Create a subnet, which represents a range of IP addresses
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that can be allocated to devices
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:param context: neutron api request context
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:param subnet: dictionary describing the subnet, with keys
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as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP` object
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in :file:`neutron/api/v2/attributes.py`. All keys will
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be populated.
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"""
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pass
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@abc.abstractmethod
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def update_subnet(self, context, id, subnet):
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"""Update values of a subnet.
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:param context: neutron api request context
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:param id: UUID representing the subnet to update.
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:param subnet: dictionary with keys indicating fields to update.
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valid keys are those that have a value of True for
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'allow_put' as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`.
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"""
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pass
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@abc.abstractmethod
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def get_subnet(self, context, id, fields=None):
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"""Retrieve a subnet.
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:param context: neutron api request context
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:param id: UUID representing the subnet to fetch.
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:param fields: a list of strings that are valid keys in a
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subnet dictionary as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Only these fields
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will be returned.
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"""
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pass
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@abc.abstractmethod
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def get_subnets(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None, page_reverse=False):
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"""Retrieve a list of subnets.
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The contents of the list depends on
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the identity of the user making the request (as indicated by the
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context) as well as any filters.
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:param context: neutron api request context
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:param filters: a dictionary with keys that are valid keys for
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a subnet as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP`
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object in :file:`neutron/api/v2/attributes.py`.
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Values in this dictiontary are an iterable containing
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values that will be used for an exact match comparison
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for that value. Each result returned by this
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function will have matched one of the values for each
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key in filters.
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:param fields: a list of strings that are valid keys in a
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subnet dictionary as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Only these fields
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will be returned.
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"""
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pass
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def get_subnets_count(self, context, filters=None):
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"""Return the number of subnets.
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The result depends on the identity of
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the user making the request (as indicated by the context) as well as
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any filters.
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:param context: neutron api request context
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:param filters: a dictionary with keys that are valid keys for
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a network as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Values in this
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dictiontary are an iterable containing values that
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will be used for an exact match comparison for that
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value. Each result returned by this function will
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have matched one of the values for each key in filters.
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.. note:: this method is optional, as it was not part of the originally
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defined plugin API.
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def delete_subnet(self, context, id):
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"""Delete a subnet.
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:param context: neutron api request context
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:param id: UUID representing the subnet to delete.
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"""
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pass
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@abc.abstractmethod
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def create_network(self, context, network):
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"""Create a network.
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Create a network, which represents an L2 network segment which
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can have a set of subnets and ports associated with it.
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:param context: neutron api request context
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:param network: dictionary describing the network, with keys
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as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP` object
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in :file:`neutron/api/v2/attributes.py`. All keys will
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be populated.
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"""
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pass
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@abc.abstractmethod
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def update_network(self, context, id, network):
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"""Update values of a network.
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:param context: neutron api request context
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:param id: UUID representing the network to update.
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:param network: dictionary with keys indicating fields to update.
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valid keys are those that have a value of True for
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'allow_put' as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`.
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"""
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pass
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@abc.abstractmethod
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def get_network(self, context, id, fields=None):
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"""Retrieve a network.
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:param context: neutron api request context
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:param id: UUID representing the network to fetch.
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:param fields: a list of strings that are valid keys in a
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network dictionary as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Only these fields
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will be returned.
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"""
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pass
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@abc.abstractmethod
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def get_networks(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None, page_reverse=False):
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"""Retrieve a list of networks.
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The contents of the list depends on
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the identity of the user making the request (as indicated by the
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context) as well as any filters.
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:param context: neutron api request context
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:param filters: a dictionary with keys that are valid keys for
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a network as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Values in this
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dictiontary are an iterable containing values that will
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be used for an exact match comparison for that value.
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Each result returned by this function will have matched
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one of the values for each key in filters.
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:param fields: a list of strings that are valid keys in a
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network dictionary as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Only these fields
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will be returned.
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"""
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pass
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def get_networks_count(self, context, filters=None):
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"""Return the number of networks.
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The result depends on the identity
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of the user making the request (as indicated by the context) as well
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as any filters.
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:param context: neutron api request context
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:param filters: a dictionary with keys that are valid keys for
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a network as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object
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in :file:`neutron/api/v2/attributes.py`. Values in
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this dictiontary are an iterable containing values that
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will be used for an exact match comparison for that
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value. Each result returned by this function will have
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matched one of the values for each key in filters.
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NOTE: this method is optional, as it was not part of the originally
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defined plugin API.
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def delete_network(self, context, id):
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"""Delete a network.
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:param context: neutron api request context
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:param id: UUID representing the network to delete.
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"""
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pass
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@abc.abstractmethod
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def create_port(self, context, port):
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"""Create a port.
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Create a port, which is a connection point of a device (e.g., a VM
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NIC) to attach to a L2 neutron network.
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:param context: neutron api request context
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:param port: dictionary describing the port, with keys as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. All keys will be
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populated.
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"""
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pass
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@abc.abstractmethod
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def update_port(self, context, id, port):
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"""Update values of a port.
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:param context: neutron api request context
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:param id: UUID representing the port to update.
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:param port: dictionary with keys indicating fields to update.
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valid keys are those that have a value of True for
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'allow_put' as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP`
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object in :file:`neutron/api/v2/attributes.py`.
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"""
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pass
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@abc.abstractmethod
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def get_port(self, context, id, fields=None):
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"""Retrieve a port.
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:param context: neutron api request context
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:param id: UUID representing the port to fetch.
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:param fields: a list of strings that are valid keys in a port
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dictionary as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Only these fields
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will be returned.
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"""
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pass
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@abc.abstractmethod
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def get_ports(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None, page_reverse=False):
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"""Retrieve a list of ports.
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The contents of the list depends on the identity of the user making
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the request (as indicated by the context) as well as any filters.
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:param context: neutron api request context
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:param filters: a dictionary with keys that are valid keys for
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a port as listed in the :obj:`RESOURCE_ATTRIBUTE_MAP`
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object in :file:`neutron/api/v2/attributes.py`. Values
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in this dictiontary are an iterable containing values
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that will be used for an exact match comparison for
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that value. Each result returned by this function will
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have matched one of the values for each key in filters.
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:param fields: a list of strings that are valid keys in a
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port dictionary as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Only these fields
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will be returned.
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"""
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pass
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def get_ports_count(self, context, filters=None):
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"""Return the number of ports.
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The result depends on the identity of the user making the request
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(as indicated by the context) as well as any filters.
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:param context: neutron api request context
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:param filters: a dictionary with keys that are valid keys for
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a network as listed in the
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:obj:`RESOURCE_ATTRIBUTE_MAP` object in
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:file:`neutron/api/v2/attributes.py`. Values in this
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dictiontary are an iterable containing values that will
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be used for an exact match comparison for that value.
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Each result returned by this function will have matched
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one of the values for each key in filters.
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.. note:: this method is optional, as it was not part of the originally
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defined plugin API.
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def delete_port(self, context, id):
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"""Delete a port.
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:param context: neutron api request context
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:param id: UUID representing the port to delete.
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"""
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pass
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def start_rpc_listener(self):
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"""Start the rpc listener.
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Most plugins start an RPC listener implicitly on initialization. In
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order to support multiple process RPC, the plugin needs to expose
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control over when this is started.
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.. note:: this method is optional, as it was not part of the originally
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defined plugin API.
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"""
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raise NotImplementedError
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def rpc_workers_supported(self):
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"""Return whether the plugin supports multiple RPC workers.
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A plugin that supports multiple RPC workers should override the
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start_rpc_listener method to ensure that this method returns True and
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that start_rpc_listener is called at the appropriate time.
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Alternately, a plugin can override this method to customize detection
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of support for multiple rpc workers
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.. note:: this method is optional, as it was not part of the originally
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defined plugin API.
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"""
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return (self.__class__.start_rpc_listener !=
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NeutronPluginBaseV2.start_rpc_listener)
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