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60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
"""2.2.6
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为订阅洗版增加按集优先级状态
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Revision ID: 9caa49cb3e10
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Revises: b8f6e3a1c2d4
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Create Date: 2026-05-12
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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 identifiers, used by Alembic.
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revision = "9caa49cb3e10"
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down_revision = "b8f6e3a1c2d4"
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branch_labels = None
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depends_on = None
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def _has_column(inspector: sa.Inspector, table_name: str, column_name: str) -> bool:
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if table_name not in inspector.get_table_names():
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return False
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return any(column["name"] == column_name for column in inspector.get_columns(table_name))
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def _ensure_json_column(bind, table_name: str, column_name: str) -> None:
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"""Add the column as JSON, or fix it if it already exists with the wrong type (PostgreSQL only)."""
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inspector = sa.inspect(bind)
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if not _has_column(inspector, table_name, column_name):
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op.add_column(table_name, sa.Column(column_name, sa.JSON(), nullable=True))
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return
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if bind.dialect.name != "postgresql":
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return
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for col in inspector.get_columns(table_name):
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if col["name"] != column_name:
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continue
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type_name = type(col["type"]).__name__.upper()
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if type_name in ("JSON", "JSONB"):
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return
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# Column exists with wrong type (e.g., INTEGER from an intermediate build); replace it.
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# Existing values are non-functional garbage so data loss is acceptable.
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op.drop_column(table_name, column_name)
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op.add_column(table_name, sa.Column(column_name, sa.JSON(), nullable=True))
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return
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def upgrade() -> None:
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bind = op.get_bind()
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_ensure_json_column(bind, "subscribe", "episode_priority")
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_ensure_json_column(bind, "subscribehistory", "episode_priority")
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def downgrade() -> None:
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inspector = sa.inspect(op.get_bind())
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if _has_column(inspector, "subscribehistory", "episode_priority"):
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op.drop_column("subscribehistory", "episode_priority")
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inspector = sa.inspect(op.get_bind())
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if _has_column(inspector, "subscribe", "episode_priority"):
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op.drop_column("subscribe", "episode_priority")
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