75 lines
2.7 KiB
Python
75 lines
2.7 KiB
Python
# Copyright 2015 OpenStack Foundation
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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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"""ML2 hierarchical binding
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Revision ID: 2d2a8a565438
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Revises: 4119216b7365
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Create Date: 2014-08-24 21:56:36.422885
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"""
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# revision identifiers, used by Alembic.
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revision = '2d2a8a565438'
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down_revision = '4119216b7365'
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.engine import reflection
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port_binding_tables = ['ml2_port_bindings', 'ml2_dvr_port_bindings']
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def upgrade():
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inspector = reflection.Inspector.from_engine(op.get_bind())
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fk_name = [fk['name'] for fk in
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inspector.get_foreign_keys('ml2_port_bindings')
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if 'segment' in fk['constrained_columns']]
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fk_name_dvr = [fk['name'] for fk in
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inspector.get_foreign_keys('ml2_dvr_port_bindings')
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if 'segment' in fk['constrained_columns']]
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op.create_table(
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'ml2_port_binding_levels',
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sa.Column('port_id', sa.String(length=36), nullable=False),
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sa.Column('host', sa.String(length=255), nullable=False),
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sa.Column('level', sa.Integer(), autoincrement=False, nullable=False),
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sa.Column('driver', sa.String(length=64), nullable=True),
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sa.Column('segment_id', sa.String(length=36), nullable=True),
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sa.ForeignKeyConstraint(['port_id'], ['ports.id'], ondelete='CASCADE'),
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sa.ForeignKeyConstraint(['segment_id'], ['ml2_network_segments.id'],
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ondelete='SET NULL'),
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sa.PrimaryKeyConstraint('port_id', 'host', 'level')
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)
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for table in port_binding_tables:
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op.execute((
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"INSERT INTO ml2_port_binding_levels "
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"SELECT port_id, host, 0 AS level, driver, segment AS segment_id "
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"FROM %s "
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"WHERE host <> '' "
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"AND driver <> '';"
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) % table)
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op.drop_constraint(fk_name_dvr[0], 'ml2_dvr_port_bindings', 'foreignkey')
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op.drop_column('ml2_dvr_port_bindings', 'cap_port_filter')
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op.drop_column('ml2_dvr_port_bindings', 'segment')
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op.drop_column('ml2_dvr_port_bindings', 'driver')
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op.drop_constraint(fk_name[0], 'ml2_port_bindings', 'foreignkey')
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op.drop_column('ml2_port_bindings', 'driver')
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op.drop_column('ml2_port_bindings', 'segment')
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