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65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
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"""Add notifications.reescalation_count/_delivered_count + last_reescalated_at.
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`sweep_expired_notifications` used to re-escalate EVERY ack-required
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notification past `expires_at` on every ~1min sweep tick, forever — a static
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pile of stale notifications produced a fresh blocker_escalation row (+
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Telegram DM) per row per tick. These three columns back a per-notification
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exponential backoff (first re-escalation at expiry, then doubling from
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`notification_reescalation_base_seconds`, capped at 24h, hard-stopped past
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`notification_max_reescalations`): `reescalation_count` is the attempt
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counter (claimed via compare-and-set even when delivery then fails),
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`reescalation_delivered_count` is how many of those attempts actually
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reached a recipient, `last_reescalated_at` anchors the backoff interval.
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Additive and default-`0`/`NULL`: existing rows read as `count=0`, preserving
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today's first-fire semantics.
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Revision ID: 079_notification_backoff
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Revises: 078_project_codegen_command
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Create Date: 2026-07-22
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"""
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from __future__ import annotations
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import sqlalchemy as sa
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from alembic import op
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revision = "079_notification_backoff"
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down_revision = "078_project_codegen_command"
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branch_labels: dict[str, str] | None = None
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depends_on: dict[str, str] | None = None
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def upgrade() -> None:
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op.add_column(
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"notifications",
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sa.Column(
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"reescalation_count",
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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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"notifications",
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sa.Column(
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"reescalation_delivered_count",
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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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"notifications",
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sa.Column(
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"last_reescalated_at",
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sa.DateTime(timezone=True),
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nullable=True,
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),
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)
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def downgrade() -> None:
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op.drop_column("notifications", "last_reescalated_at")
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op.drop_column("notifications", "reescalation_delivered_count")
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op.drop_column("notifications", "reescalation_count")
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