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FabledCurator/backend/app/models/task_run.py
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db: reconcile the models with the deployed schema (#3275)
Milestone 328's acceptance test compared a database built by the real
0001..0087 chain against one built from the models, and found ~130
places where they disagree. This closes them.

Almost all were the MODEL being wrong, so almost all of this is model
edits with no DDL — the database already had these things, nothing in it
changes, and no deploy is needed for this part:

* 92 columns gained server_default. The models carried Python-side
  `default=` only, so the ORM filled the value and the column had no
  database default. Anything inserting outside the ORM behaved
  differently from production.

* Eleven indexes that existed only in migrations are now declared:
  the three backup_run reporting indexes, the two date-ordered
  image_record browse indexes, import_task and presentation_review,
  and the three task_run history indexes. All use text() for their DESC
  ordering and postgresql_where for the partial one.

* Two UNIQUE indexes that autogenerate silently proposed DROPPING,
  because neither is expressible as a UniqueConstraint:
    uq_tag_name_kind_fandom  — an EXPRESSION index over
                               (name, kind, COALESCE(fandom_id, 0))
    uq_post_artist_external_id_null_source — PARTIAL, WHERE source_id
                               IS NULL
  post.py already had a comment describing the second one. The comment
  was right; nothing declared it.

* The two external_link enum CHECKs (host, status) — rule 36 territory,
  and absent from the model entirely.

* Two indexes were named explicitly. A bare index=True generated
  ix_tag_alias_canonical_tag_id where the database has
  ix_tag_alias_canonical, so autogenerate proposed a drop+create of an
  index that was already there under another name. Same for
  tag_suggestion_rejection.

Only ONE thing needed DDL, as 0088: tag.fandom_id is declared
index=True but no migration ever created that index.

Deliberately NOT here: image_record.sha256. The model says unique=True;
0001 created a plain index. Duplicates are possible today and the ORM
believes otherwise. The fix depends on whether duplicates already exist
— if they do, that is a dedupe decision, not a constraint — so it waits
on an answer about live data.

The real severity of #3275 is not the squash. It is that --autogenerate
has been unsafe on this project: run against the old models it would
have proposed dropping eleven indexes and two uniqueness guarantees.
2026-08-30 14:42:30 -04:00

57 lines
2.4 KiB
Python

"""FC-3i: task_run — per-Celery-task lifecycle audit row.
One row inserted by the task_prerun signal at task start, updated by
task_postrun / task_failure / task_retry. The shape supports the
SystemActivity dashboard's three panes: per-queue queue+worker summary,
recent failures (24h, grouped by error_type), and full paginated
activity history.
Retention: ok rows pruned after 24h, error/timeout after 7d (see
backend.app.tasks.maintenance.prune_task_runs).
Recovery: rows stuck in 'running' for >5 min flipped to 'error' by
backend.app.tasks.maintenance.recover_stalled_task_runs (Beat 5 min).
"""
from datetime import datetime
from sqlalchemy import DateTime, Index, Integer, String, Text, text
from sqlalchemy.orm import Mapped, mapped_column
from .base import Base
class TaskRun(Base):
__tablename__ = "task_run"
__table_args__ = (
# alembic 0016: the three task-history indexes (#3275).
Index("ix_task_run_name_started", "task_name", text("started_at DESC")),
Index("ix_task_run_queue_started", "queue", text("started_at DESC")),
Index("ix_task_run_status_started", "status", text("started_at DESC")),
)
id: Mapped[int] = mapped_column(Integer, primary_key=True)
celery_task_id: Mapped[str] = mapped_column(
String(64), nullable=False, index=True,
)
queue: Mapped[str] = mapped_column(String(32), nullable=False, index=True)
task_name: Mapped[str] = mapped_column(String(128), nullable=False, index=True)
target_id: Mapped[int | None] = mapped_column(Integer, nullable=True)
started_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, index=True,
)
finished_at: Mapped[datetime | None] = mapped_column(
DateTime(timezone=True), nullable=True, index=True,
)
duration_ms: Mapped[int | None] = mapped_column(Integer, nullable=True)
status: Mapped[str] = mapped_column(
String(16), nullable=False, default="running", index=True,
server_default="running",
)
error_type: Mapped[str | None] = mapped_column(String(128), nullable=True)
error_message: Mapped[str | None] = mapped_column(Text, nullable=True)
retry_count: Mapped[int | None] = mapped_column(Integer, nullable=True)
worker_hostname: Mapped[str | None] = mapped_column(String(128), nullable=True)
args_summary: Mapped[str | None] = mapped_column(String(255), nullable=True)