Import the wilm agent store, WINC adoption work and batches CLI, with four fixes
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migrations/versions/7d37_import_batches_and_journal.py
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89
migrations/versions/7d37_import_batches_and_journal.py
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"""Add importbatches and importjournalentries (reversible bulk imports)
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Two additive, platform-level tables that let any bulk-import writer record what
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it changed so the change can be reversed later. Import-agnostic: an importer
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writes primitive mutations (update a cell, insert a row) tied to a batch id, and
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a generic undo replays them in reverse.
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importbatches one row per approved write (identity: batchid, the same
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value the approval packet carries).
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importjournalentries one row per reversible primitive mutation, ordered by
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sequence so undo can walk them in reverse.
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Idempotent guards and a real downgrade throughout; strict MySQL 8 clean.
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Revision ID: 7d37_import_batches_and_journal
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Revises: 7d36_scriptlibrary_and_app_installer_digest
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Create Date: 2026-09-03
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"""
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from alembic import op
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import sqlalchemy as sa
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revision = '7d37_import_batches_and_journal'
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down_revision = '7d36_scriptlibrary_and_app_installer_digest'
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branch_labels = None
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depends_on = None
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def upgrade():
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bind = op.get_bind()
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insp = sa.inspect(bind)
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tables = insp.get_table_names()
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if 'importbatches' not in tables:
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op.create_table(
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'importbatches',
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sa.Column('batchid', sa.String(length=36), primary_key=True),
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sa.Column('kind', sa.String(length=64), nullable=False),
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sa.Column('planhash', sa.String(length=64), nullable=False),
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sa.Column('rowcount', sa.Integer(), nullable=False,
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server_default='0'),
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sa.Column('createdat', sa.DateTime(), nullable=False),
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sa.Column('createdby', sa.String(length=100), nullable=True),
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sa.Column('status', sa.String(length=16), nullable=False,
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server_default='applied'),
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sa.Column('undoneat', sa.DateTime(), nullable=True),
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)
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if 'importjournalentries' not in tables:
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op.create_table(
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'importjournalentries',
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sa.Column('entryid', sa.BigInteger(), primary_key=True,
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autoincrement=True),
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sa.Column('batchid', sa.String(length=36), nullable=False),
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sa.Column('sequence', sa.Integer(), nullable=False),
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sa.Column('operation', sa.String(length=16), nullable=False),
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sa.Column('targettable', sa.String(length=64), nullable=False),
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sa.Column('targetid', sa.BigInteger(), nullable=False),
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sa.Column('columnname', sa.String(length=64), nullable=True),
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sa.Column('oldvalue', sa.Text(), nullable=True),
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sa.Column('newvalue', sa.Text(), nullable=True),
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sa.Column('isreverted', sa.Boolean(), nullable=False,
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server_default=sa.text('0')),
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sa.ForeignKeyConstraint(
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['batchid'], ['importbatches.batchid'],
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name='fk_importjournalentries_batchid',
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ondelete='CASCADE'),
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)
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op.create_index(
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'idx_importjournalentries_batchid',
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'importjournalentries', ['batchid'])
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def downgrade():
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bind = op.get_bind()
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insp = sa.inspect(bind)
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tables = insp.get_table_names()
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if 'importjournalentries' in tables:
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existing = [ix['name'] for ix in
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insp.get_indexes('importjournalentries')]
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if 'idx_importjournalentries_batchid' in existing:
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op.drop_index('idx_importjournalentries_batchid',
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table_name='importjournalentries')
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op.drop_table('importjournalentries')
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if 'importbatches' in tables:
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op.drop_table('importbatches')
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