47 lines
1.4 KiB
Python
47 lines
1.4 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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"""Cascade Floating IP Floating Port deletion
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Revision ID: f15b1fb526dd
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Revises: 57dd745253a6
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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 = 'f15b1fb526dd'
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down_revision = '57dd745253a6'
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from alembic import op
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from sqlalchemy.engine import reflection
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def _drop_constraint():
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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('floatingips')
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if 'floating_port_id' in fk['constrained_columns']]
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op.drop_constraint(fk_name[0], 'floatingips', 'foreignkey')
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def upgrade():
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_drop_constraint()
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op.create_foreign_key(
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name=None,
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source='floatingips', referent='ports',
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local_cols=['floating_port_id'], remote_cols=['id'], ondelete='CASCADE'
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)
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