35 lines
772 B
Python
35 lines
772 B
Python
"""add expiring backend ownership leases and fencing epochs
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Revision ID: f5a7d2c9b3e1
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Revises: e4b7c1d2a9f0
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Create Date: 2026-09-25
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"""
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import sqlalchemy as sa
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from alembic import op
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revision = "f5a7d2c9b3e1"
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down_revision = "e4b7c1d2a9f0"
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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op.add_column(
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"sessions",
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sa.Column(
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"backend_fencing_epoch",
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sa.Integer(),
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nullable=False,
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server_default="0",
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),
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)
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op.add_column(
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"sessions",
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sa.Column("backend_lease_until", sa.DateTime(timezone=True), nullable=True),
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)
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def downgrade() -> None:
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op.drop_column("sessions", "backend_lease_until")
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op.drop_column("sessions", "backend_fencing_epoch")
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