## 为什么不能一次性跑全量
生产约 **8,000 个**「CK 有效但没查过」的账号。一次性发起 ≈ **8 万次斗鱼请求**,
很容易触发风控 —— 而风控一旦触发是**所有账号一起受影响**。试水 200 个时
0.65 秒/账号看着很香(全量 86 分钟),但那正是危险的地方:**跑得越快越容易被封**。
## 新作业 `account_overview_refresh`
照「自动巡检」(`ck_health`)那套做,并复用它的两道保护。
| 项 | 默认 | 说明 |
| --- | --- | --- |
| `interval_seconds` | 30 分钟 | 多久一轮 |
| `batch_size` | 30 | 每轮查多少(约 20 秒跑完)|
| `concurrency` | 3 | 并发 |
| `refresh_days` | 7(config 可调)| 查过的多久后再查 |
| `enabled` | **False** | 默认关,由运维手动开 |
按默认值:8,000 个约 **3 天**补完,全程不打满斗鱼接口。
## 两类账号**分开**(用户明确要求)
- **没查过的**(`overview_queried_at IS NULL`)**优先**
- 查过的只在超过 `refresh_days` 后重新入选
否则"周期性刷新老账号"会永远挤掉"从没查过的新账号"。
MySQL 没有 `NULLS FIRST`,用 `ORDER BY overview_queried_at IS NULL DESC` 等价实现。
## 只查有效 CK
`ck_check_status == 'valid'`。失效的查了也是白查(只会多一条失败记录),
交给「CK 检测与重登」处理。另外沿用 `cookie_operable_filter()`(有 CK 且无在途尝试)、
排除人工状态(停用/归档)与「不参与自动化」的账号。
## 风控熔断(沿用巡检口径)
一轮里失败率 > 50%(且样本 ≥ 10)就**自己把自己关掉**,交给人确认。
消息里写明可能原因,否则运维只看到"失败率高"会一头雾水:
失败率过高,已自动关闭作业(大面积失败通常是**被风控**或接口抖动,请先确认再重开)
样本 < 10 不熔断 —— 1 个失败就是 100%,比例没意义。
## 查询记录
每轮都建真实的 `douyu_tasks` 行(payload 标 `source=scheduled_refresh`),
「哪个账号、什么时候、查出来什么」都有据可查,也能在任务列表里
区分「定时巡检」与「人工点查询」。账号上的 `overview_queried_at`
则是"下次该不该再查"的依据。
## 验证
- **镜像库实测**:`本轮查 3 个:成功 3 / 失败 0(剩 7784 个待查)`
- 本地 `TZ=Asia/Shanghai` **632 passed / 6 skipped**;ruff 全绿
- 新增 11 条用例:选择口径(只查有效 CK、没查过优先、refresh_days 可调、
人工状态排除、batch_size 限流)+ 熔断(高失败率关闭、正常不关、小样本不熔断)
+ 一条回归:计数不能走带 LIMIT 的查询(作业第一版就是这么挂的)
211 lines
8.1 KiB
Python
211 lines
8.1 KiB
Python
"""定时补全账号资料的作业(`account_overview_refresh`)。
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**为什么不能一次性跑全量**:生产约 8,000 个待查账号,一次性发起 ≈ 8 万次斗鱼请求,
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很容易触发风控 —— 而风控的代价是所有账号一起受影响。所以做成定时分批,
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并复用「自动巡检」的两道保护(`cookie_operable_filter` + 错误率熔断)。
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"""
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from __future__ import annotations
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from datetime import UTC, datetime, timedelta
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from tests.support.db import get_test_engine, make_test_session
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from web.backend.models import Account, AutomationJob, User
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from web.backend.services.automation.jobs import account_overview_refresh as job
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class _Base:
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def setup_method(self):
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self.engine = get_test_engine()
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self.session = make_test_session(self.engine)
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self.admin = User(username="ovr-admin", password_hash="h", role="super_admin")
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self.session.add(self.admin)
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self.session.flush()
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self.job = AutomationJob(
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key=job.JOB_KEY,
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title="账号资料定时补全",
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interval_seconds=1800,
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batch_size=10,
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concurrency=3,
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enabled=False,
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config={"refresh_days": 7},
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)
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self.session.add(self.job)
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self.session.commit()
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def teardown_method(self):
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self.session.close()
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def account(
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self,
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name: str,
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*,
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ck: str = "valid",
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queried_days_ago: int | None = None,
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auto_managed: bool = True,
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status: str = "active",
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) -> Account:
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acc = Account(
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username=name,
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password="p",
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email=f"{name}@e.com",
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email_password="ep",
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cookie="acf_uid=1; acf_ccn=c",
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ck_check_status=ck,
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auto_managed=auto_managed,
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status=status,
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)
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if queried_days_ago is not None:
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acc.overview_queried_at = datetime.now(UTC) - timedelta(
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days=queried_days_ago
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)
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self.session.add(acc)
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self.session.commit()
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return acc
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def selected(self) -> list[Account]:
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return job.build_select_query(self.session, self.job, datetime.now(UTC)).all()
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class TestSelection(_Base):
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def test_only_valid_ck_is_selected(self):
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"""只查有效 CK —— 失效的查了也是白查,只会多一条失败记录。"""
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self.account("ovr-valid", ck="valid")
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self.account("ovr-invalid", ck="invalid")
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self.account("ovr-error", ck="error")
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names = [a.username for a in self.selected()]
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assert "ovr-valid" in names
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assert "ovr-invalid" not in names
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assert "ovr-error" not in names
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def test_never_queried_comes_first(self):
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"""**没查过的优先** —— 否则周期性刷新会永远挤掉从没查过的新账号。"""
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self.account("ovr-old", queried_days_ago=30)
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self.account("ovr-never")
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assert self.selected()[0].username == "ovr-never"
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def test_recently_queried_is_skipped(self):
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"""刚查过的要跳过(`refresh_days` 之内不再查)。"""
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self.account("ovr-fresh", queried_days_ago=1)
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names = [a.username for a in self.selected()]
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assert "ovr-fresh" not in names
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def test_stale_is_selected_again(self):
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self.account("ovr-stale", queried_days_ago=30)
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assert "ovr-stale" in [a.username for a in self.selected()]
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def test_refresh_days_is_configurable(self):
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self.job.config = {"refresh_days": 100}
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self.session.commit()
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self.account("ovr-30d", queried_days_ago=30)
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assert "ovr-30d" not in [a.username for a in self.selected()]
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def test_manual_and_unmanaged_accounts_are_excluded(self):
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"""人工状态(停用/归档)与「不参与自动化」的账号不该被自动碰。"""
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self.account("ovr-disabled", status="disabled")
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self.account("ovr-archived", status="archived")
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self.account("ovr-unmanaged", auto_managed=False)
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names = [a.username for a in self.selected()]
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for bad in ("ovr-disabled", "ovr-archived", "ovr-unmanaged"):
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assert bad not in names
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def test_batch_size_limits_the_round(self):
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for i in range(5):
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self.account(f"ovr-batch-{i}")
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self.job.batch_size = 2
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self.session.commit()
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assert len(self.selected()) == 2
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def test_remaining_count_works_with_limit_applied(self):
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"""回归:计数不能走 `build_select_query`。
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那个查询已经 `LIMIT` 了,再 `order_by(None)` 会被 SQLAlchemy 拒绝:
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"order_by() being called on a Query which already has LIMIT"。
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(真踩过 —— 作业第一版就是这么挂的。)
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"""
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for i in range(4):
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self.account(f"ovr-count-{i}")
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self.job.batch_size = 1
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self.session.commit()
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assert job.count_remaining(self.session, self.job, datetime.now(UTC)) >= 4
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class TestCircuitBreaker(_Base):
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"""失败率过高就**自己把自己关掉**(风控保护)。
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与「自动巡检」同口径。大面积失败通常意味着被风控或斗鱼接口抖动 ——
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这时候继续跑只会把更多账号写坏,停手交给人确认才是对的。
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"""
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def _run_with(self, total: int, failed: int):
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"""打桩执行器,只关心失败率熔断的逻辑。"""
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from web.backend.models import DouyuTask
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for i in range(total):
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self.account(f"ovr-cb-{i}")
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def fake_create(db, ids, task_type, scope, created_by, payload=None):
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batch_id = "cb-batch"
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for account_id in ids:
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self.session.add(
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DouyuTask(
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batch_id=batch_id,
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account_id=account_id,
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task_type=task_type,
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handbook_scope=scope,
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status="planned",
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created_by=created_by,
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)
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)
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self.session.commit()
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return batch_id, len(ids)
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session = self.session # 闭包捕获:下面 _FakeRunner 里的 self 是 runner
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class _FakeRunner:
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def __init__(self, *a, **k):
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pass
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def run(self):
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# 把前 `failed` 个标成失败,其余成功
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rows = (
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session.query(DouyuTask)
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.filter(DouyuTask.batch_id == "cb-batch")
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.order_by(DouyuTask.id.asc())
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.all()
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)
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for index, row in enumerate(rows):
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row.status = "failed" if index < failed else "success"
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session.commit()
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import web.backend.services.automation.jobs.account_overview_refresh as mod
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original_create = mod.create_douyu_planned_tasks
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original_runner = mod.DouyuBatchRunner
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mod.create_douyu_planned_tasks = fake_create
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mod.DouyuBatchRunner = _FakeRunner
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try:
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return job.run_account_overview_refresh(self.session, self.job)
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finally:
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mod.create_douyu_planned_tasks = original_create
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mod.DouyuBatchRunner = original_runner
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def test_high_failure_ratio_disables_the_job(self):
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out = self._run_with(total=20, failed=15) # 75% 失败
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self.session.refresh(self.job)
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assert out["paused"] is True
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assert self.job.enabled is False, "失败率过高应自动关闭作业"
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assert "风控" in out["message"]
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def test_normal_failure_ratio_keeps_job_running(self):
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out = self._run_with(total=20, failed=1) # 5% 失败(真实的 CK 失效率)
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self.session.refresh(self.job)
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assert out["paused"] is False
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assert "风控" not in out["message"]
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def test_small_sample_does_not_trigger_breaker(self):
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"""样本太少时比例没有意义(1 个失败就是 100%),不该熔断。"""
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out = self._run_with(total=3, failed=3)
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self.session.refresh(self.job)
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assert out["paused"] is False, "样本不足时不该熔断"
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