76 lines
2.0 KiB
Python
76 lines
2.0 KiB
Python
|
"""segments：Phase2 低置信路由延迟元数据
|
|||
|
|
|
|||
|
|
Revision ID: 0017_segment_narrative_defer
|
|||
|
|
Revises: 0016_memory_pipeline_status
|
|||
|
|
"""
|
|||
|
|
|
|||
|
|
from typing import Sequence, Union
|
|||
|
|
|
|||
|
|
import sqlalchemy as sa
|
|||
|
|
|
|||
|
|
from alembic import op
|
|||
|
|
|
|||
|
|
revision: str = "0017_segment_narrative_defer"
|
|||
|
|
down_revision: Union[str, None] = "0016_memory_pipeline_status"
|
|||
|
|
branch_labels: Union[str, Sequence[str], None] = None
|
|||
|
|
depends_on: Union[str, Sequence[str], None] = None
|
|||
|
|
|
|||
|
|
|
|||
|
|
def _column_names(table_name: str) -> set[str]:
|
|||
|
|
bind = op.get_bind()
|
|||
|
|
inspector = sa.inspect(bind)
|
|||
|
|
return {column["name"] for column in inspector.get_columns(table_name)}
|
|||
|
|
|
|||
|
|
|
|||
|
|
def upgrade() -> None:
|
|||
|
|
columns = _column_names("segments")
|
|||
|
|
if "narrative_deferred_until" not in columns:
|
|||
|
|
op.add_column(
|
|||
|
|
"segments",
|
|||
|
|
sa.Column(
|
|||
|
|
"narrative_deferred_until",
|
|||
|
|
sa.DateTime(timezone=True),
|
|||
|
|
nullable=True,
|
|||
|
|
),
|
|||
|
|
)
|
|||
|
|
if "narrative_defer_count" not in columns:
|
|||
|
|
op.add_column(
|
|||
|
|
"segments",
|
|||
|
|
sa.Column(
|
|||
|
|
"narrative_defer_count",
|
|||
|
|
sa.Integer(),
|
|||
|
|
nullable=False,
|
|||
|
|
server_default=sa.text("0"),
|
|||
|
|
),
|
|||
|
|
)
|
|||
|
|
if "narrative_defer_reason" not in columns:
|
|||
|
|
op.add_column(
|
|||
|
|
"segments",
|
|||
|
|
sa.Column(
|
|||
|
|
"narrative_defer_reason",
|
|||
|
|
sa.String(),
|
|||
|
|
nullable=True,
|
|||
|
|
),
|
|||
|
|
)
|
|||
|
|
if "narrative_last_attempt_at" not in columns:
|
|||
|
|
op.add_column(
|
|||
|
|
"segments",
|
|||
|
|
sa.Column(
|
|||
|
|
"narrative_last_attempt_at",
|
|||
|
|
sa.DateTime(timezone=True),
|
|||
|
|
nullable=True,
|
|||
|
|
),
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def downgrade() -> None:
|
|||
|
|
columns = _column_names("segments")
|
|||
|
|
for column in (
|
|||
|
|
"narrative_last_attempt_at",
|
|||
|
|
"narrative_defer_reason",
|
|||
|
|
"narrative_defer_count",
|
|||
|
|
"narrative_deferred_until",
|
|||
|
|
):
|
|||
|
|
if column in columns:
|
|||
|
|
op.drop_column("segments", column)
|