54 lines
2.1 KiB
Python
54 lines
2.1 KiB
Python
# Copyright 2012 New Dream Network, LLC (DreamHost)
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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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# @author: Mark McClain, DreamHost
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from alembic import op
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import sqlalchemy as sa
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OVS_PLUGIN = ('neutron.plugins.openvswitch.ovs_neutron_plugin'
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'.OVSNeutronPluginV2')
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CISCO_PLUGIN = 'neutron.plugins.cisco.network_plugin.PluginV2'
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def should_run(active_plugins, migrate_plugins):
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if '*' in migrate_plugins:
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return True
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else:
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if (CISCO_PLUGIN not in migrate_plugins and
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OVS_PLUGIN in migrate_plugins):
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migrate_plugins.append(CISCO_PLUGIN)
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return set(active_plugins) & set(migrate_plugins)
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def alter_enum(table, column, enum_type, nullable):
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bind = op.get_bind()
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engine = bind.engine
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if engine.name == 'postgresql':
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values = {'table': table,
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'column': column,
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'name': enum_type.name}
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op.execute("ALTER TYPE %(name)s RENAME TO old_%(name)s" % values)
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enum_type.create(bind, checkfirst=False)
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op.execute("ALTER TABLE %(table)s RENAME COLUMN %(column)s TO "
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"old_%(column)s" % values)
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op.add_column(table, sa.Column(column, enum_type, nullable=nullable))
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op.execute("UPDATE %(table)s SET %(column)s = "
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"old_%(column)s::text::%(name)s" % values)
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op.execute("ALTER TABLE %(table)s DROP COLUMN old_%(column)s" % values)
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op.execute("DROP TYPE old_%(name)s" % values)
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else:
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op.alter_column(table, column, type_=enum_type,
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existing_nullable=nullable)
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