2779a41b94
Tables: session_branches, session_handoffs, fork_points,
ai_session_steps, ai_suggestions
Backfill: session_id → ai_sessions.account_id (all except
ai_suggestions which uses user_id → users.account_id)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
"""add account_id to AI branching tables
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Revision ID: 478c159e5654
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Revises: cc214c63aa30
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Create Date: 2026-04-09 00:00:00.000000
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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revision: str = '478c159e5654'
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down_revision: Union[str, None] = 'cc214c63aa30'
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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ai_tables = ('session_branches', 'session_handoffs', 'fork_points', 'ai_session_steps')
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# Step 1: ADD COLUMN (nullable)
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for table in ai_tables:
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op.add_column(table, sa.Column('account_id', sa.UUID(), nullable=True))
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op.create_foreign_key(
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f'fk_{table}_account_id', table, 'accounts',
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['account_id'], ['id'], ondelete='CASCADE',
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)
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op.add_column('ai_suggestions', sa.Column('account_id', sa.UUID(), nullable=True))
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op.create_foreign_key(
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'fk_ai_suggestions_account_id', 'ai_suggestions', 'accounts',
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['account_id'], ['id'], ondelete='CASCADE',
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)
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# Step 2: BACKFILL
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for table in ai_tables:
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op.execute(f"""
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UPDATE {table} t
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SET account_id = ai.account_id
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FROM ai_sessions ai
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WHERE t.session_id = ai.id
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AND t.account_id IS NULL
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""")
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op.execute("""
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UPDATE ai_suggestions s
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SET account_id = u.account_id
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FROM users u
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WHERE s.user_id = u.id
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AND s.account_id IS NULL
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""")
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# Step 3: VERIFY zero NULLs
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for table in ai_tables + ('ai_suggestions',):
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result = op.get_bind().execute(
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sa.text(f"SELECT COUNT(*) FROM {table} WHERE account_id IS NULL")
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)
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count = result.scalar()
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if count > 0:
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raise RuntimeError(
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f"ROLLBACK: {count} NULL account_id rows in {table}."
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)
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# Step 4: SET NOT NULL
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for table in ai_tables + ('ai_suggestions',):
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op.alter_column(table, 'account_id', nullable=False)
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# Step 5: CREATE INDEX
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for table in ai_tables + ('ai_suggestions',):
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op.create_index(f'ix_{table}_account_id', table, ['account_id'])
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def downgrade() -> None:
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for table in ('session_branches', 'session_handoffs', 'fork_points',
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'ai_session_steps', 'ai_suggestions'):
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op.drop_index(f'ix_{table}_account_id', table_name=table)
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op.drop_constraint(f'fk_{table}_account_id', table, type_='foreignkey')
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op.drop_column(table, 'account_id')
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