00897bd3b7
3rd part of blueprint quantum-scheduler 1. Allow networks to be hosted by certain dhcp agents. Network to dhcp agent is a many to many relationship. Provide a simple scheduler to schedule a network randomly to an active dhcp agent when a network or port is created. 2. Allow admin user to (de)schedule network to a certain dhcp agent manually. 3. Allow routers to be hosted by a certain l3 agent. Router to l3 agent is a many to one relationship. Provide a simple scheduler to schedule a router to l3 agent if the router is not scheduled when the router is updated. 4. Auto schedule networks and routers to agents when agents start. 5. Only support ovs plugin at this point Change-Id: Iddec3ea9d4c0fe2d51a59f7db47145722fc5a1cd
80 lines
2.6 KiB
Python
80 lines
2.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2013 OpenStack LLC
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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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"""agent scheduler
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Revision ID: 4692d074d587
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Revises: 3b54bf9e29f7
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Create Date: 2013-02-21 23:01:50.370306
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"""
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# revision identifiers, used by Alembic.
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revision = '4692d074d587'
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down_revision = '3b54bf9e29f7'
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# Change to ['*'] if this migration applies to all plugins
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migration_for_plugins = [
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'quantum.plugins.openvswitch.ovs_quantum_plugin.OVSQuantumPluginV2'
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]
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from alembic import op
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import sqlalchemy as sa
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from quantum.db import migration
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def upgrade(active_plugin=None, options=None):
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if not migration.should_run(active_plugin, migration_for_plugins):
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return
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### commands auto generated by Alembic - please adjust! ###
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op.create_table(
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'networkdhcpagentbindings',
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sa.Column('network_id', sa.String(length=36), nullable=False),
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sa.Column('dhcp_agent_id', sa.String(length=36), nullable=False),
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sa.ForeignKeyConstraint(['dhcp_agent_id'], ['agents.id'],
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ondelete='CASCADE'),
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sa.ForeignKeyConstraint(['network_id'], ['networks.id'],
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ondelete='CASCADE'),
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sa.PrimaryKeyConstraint('network_id', 'dhcp_agent_id')
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)
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op.create_table(
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'routerl3agentbindings',
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sa.Column('id', sa.String(length=36), nullable=False),
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sa.Column('router_id', sa.String(length=36), nullable=True),
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sa.Column('l3_agent_id', sa.String(length=36), nullable=True),
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sa.ForeignKeyConstraint(['l3_agent_id'], ['agents.id'],
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ondelete='CASCADE'),
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sa.ForeignKeyConstraint(['router_id'], ['routers.id'],
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ondelete='CASCADE'),
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sa.PrimaryKeyConstraint('id')
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)
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### end Alembic commands ###
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def downgrade(active_plugin=None, options=None):
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if not migration.should_run(active_plugin, migration_for_plugins):
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return
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### commands auto generated by Alembic - please adjust! ###
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op.drop_table('routerl3agentbindings')
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op.drop_table('networkdhcpagentbindings')
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### end Alembic commands ###
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