55 lines
1.7 KiB
Python
55 lines
1.7 KiB
Python
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"""GEMS Pass 2: add repo_id FK to workstreams (ADR-001 alignment)
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Revision ID: f2a3b4c5d6e7
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Revises: e1f2a3b4c5d6
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Create Date: 2026-03-02 00:00:00.000000
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"""
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from typing import Sequence, Union
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import sqlalchemy as sa
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from alembic import op
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from sqlalchemy.dialects import postgresql
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revision: str = "f2a3b4c5d6e7"
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down_revision: Union[str, None] = "e1f2a3b4c5d6"
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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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op.add_column(
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"workstreams",
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sa.Column("repo_id", postgresql.UUID(as_uuid=True), nullable=True),
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)
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op.create_foreign_key(
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"fk_workstream_repo_id",
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"workstreams", "managed_repos",
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["repo_id"], ["id"],
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ondelete="SET NULL",
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)
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op.create_index("ix_workstreams_repo_id", "workstreams", ["repo_id"])
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# Best-effort backfill: topic → domain → first repo (by created_at)
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# Records with no repo in their domain remain NULL (requires manual resolution)
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op.execute("""
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UPDATE workstreams ws
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SET repo_id = sub.repo_id
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FROM (
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SELECT DISTINCT ON (ws.id)
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ws.id AS ws_id,
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mr.id AS repo_id
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FROM workstreams ws
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JOIN topics t ON t.id = ws.topic_id
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JOIN managed_repos mr ON mr.domain_id = t.domain_id
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WHERE mr.status = 'active'
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ORDER BY ws.id, mr.created_at
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) sub
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WHERE ws.id = sub.ws_id
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""")
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def downgrade() -> None:
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op.drop_index("ix_workstreams_repo_id", table_name="workstreams")
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op.drop_constraint("fk_workstream_repo_id", "workstreams", type_="foreignkey")
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op.drop_column("workstreams", "repo_id")
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