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+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2013 OpenStack LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import sqlalchemy as sql
+
+
+def upgrade(migrate_engine):
+ # The group_project_metadata table was not updated in terms of its
+ # FK to the tenant table when the tenant->project change was made at
+ # the 015 migration for sqlite. This upgrade fixes that.
+ # We need to create a fake tenant table so that we can first load
+ # the group_project_metadata at all, then do a dance of copying tables
+ # to get us to the correct schema.
+ meta = sql.MetaData()
+ meta.bind = migrate_engine
+
+ if migrate_engine.name != 'sqlite':
+ return
+
+ temp_tenant_table = sql.Table(
+ 'tenant',
+ meta,
+ sql.Column('id', sql.String(64), primary_key=True))
+ temp_tenant_table.create(migrate_engine, checkfirst=True)
+
+ sql.Table('user', meta, autoload=True)
+ old_group_metadata_table = sql.Table('group_project_metadata',
+ meta, autoload=True)
+
+ # OK, we now have the table loaded, create a first
+ # temporary table of a different name with the correct FK
+ sql.Table('project', meta, autoload=True)
+ temp_group_project_metadata_table = sql.Table(
+ 'temp_group_project_metadata',
+ meta,
+ sql.Column(
+ 'group_id',
+ sql.String(64),
+ primary_key=True),
+ sql.Column(
+ 'project_id',
+ sql.String(64),
+ sql.ForeignKey('project.id'),
+ primary_key=True),
+ sql.Column('data', sql.Text()))
+ temp_group_project_metadata_table.create(migrate_engine, checkfirst=True)
+
+ # Populate the new temporary table, and then drop the old one
+ session = sql.orm.sessionmaker(bind=migrate_engine)()
+
+ for metadata in session.query(old_group_metadata_table):
+ q = temp_group_project_metadata_table.insert().values(
+ group_id=metadata.group_id,
+ project_id=metadata.project_id,
+ data=metadata.data)
+ session.execute(q)
+ session.commit()
+ old_group_metadata_table.drop()
+ temp_tenant_table.drop()
+
+ # Now do a final table copy to get the table of the right name.
+ # Re-init the metadata so that sqlalchemy does not get confused with
+ # multiple versions of the same named table.
+ meta2 = sql.MetaData()
+ meta2.bind = migrate_engine
+
+ sql.Table('project', meta2, autoload=True)
+ new_group_project_metadata_table = sql.Table(
+ 'group_project_metadata',
+ meta2,
+ sql.Column(
+ 'group_id',
+ sql.String(64),
+ primary_key=True),
+ sql.Column(
+ 'project_id',
+ sql.String(64),
+ sql.ForeignKey('project.id'),
+ primary_key=True),
+ sql.Column('data', sql.Text()))
+ new_group_project_metadata_table.create(migrate_engine, checkfirst=True)
+
+ for metadata in session.query(temp_group_project_metadata_table):
+ q = new_group_project_metadata_table.insert().values(
+ group_id=metadata.group_id,
+ project_id=metadata.project_id,
+ data=metadata.data)
+ session.execute(q)
+ session.commit()
+
+ temp_group_project_metadata_table.drop()
+
+
+def downgrade(migrate_engine):
+ # Put the group_project_metadata table back the way it was in its rather
+ # broken state. We don't try and re-write history, since otherwise people
+ # get out of step.
+ meta = sql.MetaData()
+ meta.bind = migrate_engine
+
+ if migrate_engine.name != 'sqlite':
+ return
+
+ sql.Table('user', meta, autoload=True)
+ sql.Table('project', meta, autoload=True)
+ group_metadata_table = sql.Table('group_project_metadata',
+ meta, autoload=True)
+
+ # We want to create a temp group meta table with the FK
+ # set to the wrong place.
+ temp_tenant_table = sql.Table(
+ 'tenant',
+ meta,
+ sql.Column('id', sql.String(64), primary_key=True))
+ temp_tenant_table.create(migrate_engine, checkfirst=True)
+
+ temp_group_project_metadata_table = sql.Table(
+ 'temp_group_project_metadata',
+ meta,
+ sql.Column(
+ 'group_id',
+ sql.String(64),
+ primary_key=True),
+ sql.Column(
+ 'project_id',
+ sql.String(64),
+ sql.ForeignKey('tenant.id'),
+ primary_key=True),
+ sql.Column('data', sql.Text()))
+ temp_group_project_metadata_table.create(migrate_engine, checkfirst=True)
+
+ # Now populate the temp table and drop the real one
+ session = sql.orm.sessionmaker(bind=migrate_engine)()
+
+ for metadata in session.query(group_metadata_table):
+ q = temp_group_project_metadata_table.insert().values(
+ group_id=metadata.group_id,
+ project_id=metadata.project_id,
+ data=metadata.data)
+ session.execute(q)
+
+ session.commit()
+ group_metadata_table.drop()
+
+ # Now copy again into the correctly named table. Re-init the metadata
+ # so that sqlalchemy does not get confused with multiple versions of the
+ # same named table.
+ meta2 = sql.MetaData()
+ meta2.bind = migrate_engine
+
+ sql.Table('tenant', meta2, autoload=True)
+ new_group_project_metadata_table = sql.Table(
+ 'group_project_metadata',
+ meta2,
+ sql.Column(
+ 'group_id',
+ sql.String(64),
+ primary_key=True),
+ sql.Column(
+ 'project_id',
+ sql.String(64),
+ sql.ForeignKey('tenant.id'),
+ primary_key=True),
+ sql.Column('data', sql.Text()))
+ new_group_project_metadata_table.create(migrate_engine, checkfirst=True)
+
+ for metadata in session.query(temp_group_project_metadata_table):
+ q = new_group_project_metadata_table.insert().values(
+ group_id=metadata.group_id,
+ project_id=metadata.project_id,
+ data=metadata.data)
+ session.execute(q)
+
+ session.commit()
+
+ temp_group_project_metadata_table.drop()
+ temp_tenant_table.drop()