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43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
"""Immutable reservation start and absolute recovery deadline.
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Revision ID: a73d19b6c204
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Revises: e4c7a1b9d520
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"""
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import time
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import sqlalchemy as sa
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from alembic import op
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revision = "a73d19b6c204"
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down_revision = "e4c7a1b9d520"
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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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"reservation_releases", sa.Column("started_at", sa.Integer(), nullable=True)
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)
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op.add_column(
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"reservation_releases", sa.Column("expires_at", sa.Integer(), nullable=True)
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)
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op.create_index(
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"ix_reservation_releases_expires_at", "reservation_releases", ["expires_at"]
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)
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# Original ages are unknowable for renewed legacy rows. Give them a finite
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# migration grace period; deploy only after draining old workers.
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op.execute(
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sa.text(
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"UPDATE reservation_releases SET expires_at = :expiry WHERE status = 'active'"
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).bindparams(expiry=int(time.time()) + 1830)
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)
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def downgrade() -> None:
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op.drop_index(
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"ix_reservation_releases_expires_at", table_name="reservation_releases"
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)
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op.drop_column("reservation_releases", "expires_at")
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op.drop_column("reservation_releases", "started_at")
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