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# This file is part of Buildbot.  Buildbot is free software: you can 

# redistribute it and/or modify it under the terms of the GNU General Public 

# License as published by the Free Software Foundation, version 2. 

# 

# This program is distributed in the hope that it will be useful, but WITHOUT 

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 

# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more 

# details. 

# 

# You should have received a copy of the GNU General Public License along with 

# this program; if not, write to the Free Software Foundation, Inc., 51 

# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 

# 

# Copyright Buildbot Team Members 

 

import sqlalchemy as sa 

 

def upgrade(migrate_engine): 

    metadata = sa.MetaData() 

    metadata.bind = migrate_engine 

 

    # autoload the tables that are only referenced here 

    sa.Table('changes', metadata, autoload=True) 

    sa.Table('buildsets', metadata, autoload=True) 

    sa.Table("objects", metadata, autoload=True) 

 

    # drop all tables.  Schedulers will re-populate on startup 

 

    scheduler_changes_tbl = sa.Table('scheduler_changes', metadata, 

        sa.Column('schedulerid', sa.Integer), 

        # ... 

    ) 

    scheduler_changes_tbl.drop() 

    metadata.remove(scheduler_changes_tbl) 

 

    scheduler_upstream_buildsets_tbl = sa.Table('scheduler_upstream_buildsets', 

                                            metadata, 

        sa.Column('buildsetid', sa.Integer), 

        # ... 

    ) 

    scheduler_upstream_buildsets_tbl.drop() 

    metadata.remove(scheduler_upstream_buildsets_tbl) 

 

    schedulers_tbl = sa.Table("schedulers", metadata, 

        sa.Column('schedulerid', sa.Integer), 

        # ... 

    ) 

    schedulers_tbl.drop() 

    metadata.remove(schedulers_tbl) 

 

    # schedulers and scheduler_upstream_buildsets aren't coming back, but 

    # scheduler_changes is -- along with its indexes 

 

    scheduler_changes_tbl = sa.Table('scheduler_changes', metadata, 

        sa.Column('objectid', sa.Integer, 

            sa.ForeignKey('objects.id')), 

        sa.Column('changeid', sa.Integer, 

            sa.ForeignKey('changes.changeid')), 

        sa.Column('important', sa.Integer), 

    ) 

    scheduler_changes_tbl.create() 

 

    idx = sa.Index('scheduler_changes_objectid', 

            scheduler_changes_tbl.c.objectid) 

    idx.create() 

 

    idx = sa.Index('scheduler_changes_changeid', 

            scheduler_changes_tbl.c.changeid) 

    idx.create() 

 

    idx = sa.Index('scheduler_changes_unique', 

            scheduler_changes_tbl.c.objectid, 

            scheduler_changes_tbl.c.changeid, unique=True) 

    idx.create()