46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
#
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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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import sqlalchemy
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def upgrade(migrate_engine):
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meta = sqlalchemy.MetaData(bind=migrate_engine)
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stack = sqlalchemy.Table('stack', meta, autoload=True)
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nested_depth = sqlalchemy.Column(
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'nested_depth', sqlalchemy.Integer(), default=0)
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nested_depth.create(stack)
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def get_stacks(owner_id):
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stmt = stack.select().where(stack.c.owner_id == owner_id)
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return migrate_engine.execute(stmt)
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def set_nested_depth(st, nested_depth):
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if st.backup:
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return
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values = {'nested_depth': nested_depth}
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update = stack.update().where(
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stack.c.id == st.id).values(values)
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migrate_engine.execute(update)
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# Recurse down the tree
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child_stacks = get_stacks(owner_id=st.id)
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child_nested_depth = nested_depth + 1
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for ch in child_stacks:
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set_nested_depth(ch, child_nested_depth)
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# Iterate over all top-level non nested stacks
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for st in get_stacks(owner_id=None):
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set_nested_depth(st, 0)
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