105 lines
3.0 KiB
Python
105 lines
3.0 KiB
Python
"""your message
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Revision ID: aa17f8a032c9
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Revises: 8623aa4bf3a1
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Create Date: 2026-06-01 11:31:16.648791
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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 identifiers, used by Alembic.
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revision: str = "aa17f8a032c9"
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down_revision: Union[str, None] = "8623aa4bf3a1"
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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 _has_column(table_name: str, column_name: str) -> bool:
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bind = op.get_bind()
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inspector = sa.inspect(bind)
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columns = inspector.get_columns(table_name)
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return any(column.get("name") == column_name for column in columns)
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def _has_index(table_name: str, index_name: str) -> bool:
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bind = op.get_bind()
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inspector = sa.inspect(bind)
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indexes = inspector.get_indexes(table_name)
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return any(index.get("name") == index_name for index in indexes)
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def _add_column_if_not_exists(table_name: str, column: sa.Column) -> None:
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if not _has_column(table_name, column.name):
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op.add_column(table_name, column)
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def _drop_column_if_exists(table_name: str, column_name: str) -> None:
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if _has_column(table_name, column_name):
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op.drop_column(table_name, column_name)
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def _create_index_if_not_exists(
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index_name: str,
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table_name: str,
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columns: list[str],
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unique: bool = False,
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) -> None:
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if not _has_index(table_name, index_name):
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op.create_index(index_name, table_name, columns, unique=unique)
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def _drop_index_if_exists(index_name: str, table_name: str) -> None:
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if _has_index(table_name, index_name):
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op.drop_index(index_name, table_name=table_name)
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def upgrade() -> None:
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_add_column_if_not_exists(
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"chat_generation_tasks",
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sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
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)
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_create_index_if_not_exists(
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"ix_chat_generation_tasks_deleted_at",
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"chat_generation_tasks",
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["deleted_at"],
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unique=False,
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)
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_add_column_if_not_exists(
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"generation_records",
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sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
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)
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_create_index_if_not_exists(
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"ix_generation_records_deleted_at",
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"generation_records",
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["deleted_at"],
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unique=False,
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)
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_add_column_if_not_exists(
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"projects",
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sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
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)
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_create_index_if_not_exists(
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"ix_projects_deleted_at",
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"projects",
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["deleted_at"],
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unique=False,
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)
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def downgrade() -> None:
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_drop_index_if_exists("ix_projects_deleted_at", "projects")
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_drop_column_if_exists("projects", "deleted_at")
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_drop_index_if_exists("ix_generation_records_deleted_at", "generation_records")
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_drop_column_if_exists("generation_records", "deleted_at")
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_drop_index_if_exists(
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"ix_chat_generation_tasks_deleted_at",
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"chat_generation_tasks",
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)
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_drop_column_if_exists("chat_generation_tasks", "deleted_at") |