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44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
"""
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Revision ID: 0360_remove_sched_notifications
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Revises: 0359_more_permissions
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Create Date: 2021-06-07 09:09:06.376862
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"""
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import sqlalchemy as sa
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from alembic import op
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from sqlalchemy.dialects import postgresql
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revision = "0360_remove_sched_notifications"
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down_revision = "0359_more_permissions"
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def upgrade():
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# drop index concurrently will drop the index without locking out concurrent
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# selects, inserts, updates, and deletes on the index's table namely on notifications
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# First we need to issue a commit to clear the transaction block.
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op.execute("COMMIT")
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op.execute("DROP INDEX CONCURRENTLY ix_scheduled_notifications_notification_id")
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op.drop_table("scheduled_notifications")
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def downgrade():
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# I've intentionally removed adding the index back from the downgrade method
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op.create_table(
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"scheduled_notifications",
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sa.Column("id", postgresql.UUID(), autoincrement=False, nullable=False),
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sa.Column(
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"notification_id", postgresql.UUID(), autoincrement=False, nullable=False
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),
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sa.Column(
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"scheduled_for", postgresql.TIMESTAMP(), autoincrement=False, nullable=False
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),
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sa.Column("pending", sa.BOOLEAN(), autoincrement=False, nullable=False),
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sa.ForeignKeyConstraint(
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["notification_id"],
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["notifications.id"],
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name="scheduled_notifications_notification_id_fkey",
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),
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sa.PrimaryKeyConstraint("id", name="scheduled_notifications_pkey"),
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)
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