Remove systemCapabilities column (#350). r=nthomas

auslib/db.py

@@ -1454,7 +1454,6 @@ def __init__(self, db, metadata, dialect):
                            Column('locale', String(200)),
                            Column('osVersion', String(1000)),
                            Column('memory', String(100)),
-                           Column('systemCapabilities', String(1000)),
                            Column('instructionSet', String(1000)),
                            Column('distribution', String(100)),
                            Column('distVersion', String(100)),

auslib/migrate/versions/028_remove_systemCapabilities.py

@@ -0,0 +1,34 @@
+from sqlalchemy import Column, String, MetaData, Table
+
+
+def upgrade(migrate_engine):
+    metadata = MetaData(bind=migrate_engine)
+
+    Table('rules', metadata, autoload=True).c.systemCapabilities.drop()
+    Table('rules_history', metadata, autoload=True).c.systemCapabilities.drop()
+    Table('rules_scheduled_changes', metadata, autoload=True).c.base_systemCapabilities.drop()
+    Table('rules_scheduled_changes_history', metadata, autoload=True).c.base_systemCapabilities.drop()
+
+
+def downgrade(migrate_engine):
+    metadata = MetaData(bind=migrate_engine)
+
+    systemCapabilities = Column("systemCapabilities", String(1000))
+    systemCapabilities.create(Table("rules", metadata, autoload=True))
+
+    history_systemCapabilities = Column("systemCapabilities", String(1000))
+    history_systemCapabilities.create(Table("rules_history", metadata, autoload=True))
+
+    base_systemCapabilities = Column("base_systemCapabilities", String(1000))
+    base_systemCapabilities.create(Table("rules_scheduled_changes", metadata, autoload=True))
+
+    base_systemCapabilities = Column("base_systemCapabilities", String(1000))
+    base_systemCapabilities.create(Table("rules_scheduled_changes_history", metadata, autoload=True))
+
+    # make a best effort to restore the data
+    conn = migrate_engine.connect()
+    conn.execute("UPDATE rules SET systemCapabilities=instructionSet;")
+    conn.execute("UPDATE rules_history SET systemCapabilities=instructionSet;")
+    conn.execute("UPDATE rules_scheduled_changes SET base_systemCapabilities=base_instructionSet;")
+    conn.execute("UPDATE rules_scheduled_changes_history SET base_systemCapabilities=base_instructionSet;")
+    conn.close()