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52 lines
1.9 KiB
Python
52 lines
1.9 KiB
Python
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"""Add the respawn_tracker table — durable PM-respawn loop counter.
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``AgentOrchestrator._pm_respawn_tracker`` is the circuit breaker against
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respawning the same PM on the same task forever. Kept only in memory it reset
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to ``count=1`` on every orchestrator restart, re-burning the whole strike
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threshold against a still-wedged task. This table is its write-through mirror,
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restored at startup. Composite PK ``(agent_slug, task_id)`` matches the
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in-memory dict key. ``task_id`` is deliberately NOT a FK to ``tasks``: the
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startup loader validates against live tasks instead, so a stale counter cannot
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resurrect against a fixed/deleted task.
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Revision ID: 051_respawn_tracker
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Revises: 050_playbooks
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Create Date: 2026-06-26
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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 = "051_respawn_tracker"
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down_revision = "050_playbooks"
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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.create_table(
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"respawn_tracker",
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sa.Column("agent_slug", sa.String(length=64), nullable=False),
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sa.Column("task_id", sa.UUID(as_uuid=True), nullable=False),
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sa.Column("count", sa.Integer(), nullable=False, server_default="1"),
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sa.Column("last_status", sa.String(length=64), nullable=True),
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sa.Column("last_check", sa.DateTime(timezone=True), nullable=False),
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sa.Column("tracing_resets", sa.Integer(), nullable=False, server_default="0"),
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sa.Column("notified", sa.Boolean(), nullable=False, server_default=sa.false()),
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sa.Column(
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"updated_at",
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sa.DateTime(timezone=True),
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nullable=False,
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server_default=sa.text("now()"),
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),
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sa.PrimaryKeyConstraint("agent_slug", "task_id"),
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)
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op.create_index("ix_respawn_tracker_last_check", "respawn_tracker", ["last_check"])
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def downgrade() -> None:
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op.drop_index("ix_respawn_tracker_last_check", table_name="respawn_tracker")
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op.drop_table("respawn_tracker")
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