97a272a892
This is the second patch to allow upgrades on RPC versioned objects callbacks. This enables resource version notifications from agents to all neutron servers via fanout for updating the version sets in memory, and via agent status updates for DB storage, so any neutron server can retrieve such information at boot. Closes-Bug: #1535247 Change-Id: I67c1323267aaf7e49f4a359ff50b94e52dba4380
61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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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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NETWORK = 'network'
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SUBNET = 'subnet'
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PORT = 'port'
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SECURITY_GROUP = 'security_group'
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L2POPULATION = 'l2population'
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DVR = 'dvr'
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RESOURCES = 'resources'
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CREATE = 'create'
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DELETE = 'delete'
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UPDATE = 'update'
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AGENT = 'q-agent-notifier'
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PLUGIN = 'q-plugin'
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SERVER_RESOURCE_VERSIONS = 'q-server-resource-versions'
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L3PLUGIN = 'q-l3-plugin'
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REPORTS = 'q-reports-plugin'
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DHCP = 'q-dhcp-notifer'
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METERING_PLUGIN = 'q-metering-plugin'
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L3_AGENT = 'l3_agent'
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DHCP_AGENT = 'dhcp_agent'
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METERING_AGENT = 'metering_agent'
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RESOURCE_TOPIC_PATTERN = "neutron-vo-%(resource_type)s-%(version)s"
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def get_topic_name(prefix, table, operation, host=None):
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"""Create a topic name.
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The topic name needs to be synced between the agent and the
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plugin. The plugin will send a fanout message to all of the
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listening agents so that the agents in turn can perform their
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updates accordingly.
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:param prefix: Common prefix for the plugin/agent message queues.
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:param table: The table in question (NETWORK, SUBNET, PORT).
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:param operation: The operation that invokes notification (CREATE,
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DELETE, UPDATE)
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:param host: Add host to the topic
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:returns: The topic name.
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"""
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if host:
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return '%s-%s-%s.%s' % (prefix, table, operation, host)
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return '%s-%s-%s' % (prefix, table, operation)
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