Files
cma-management/backend/scripts/alert_generator.py
T

230 lines
8.3 KiB
Python

"""
预警自动生成 — 管理会计OS
比对 KPI 实际值与阈值配置(threshold_green/yellow/red),超出则写入 kpi_alerts
在 daily_sync 之后运行
"""
import sys
import os
import re
import json
import logging
from datetime import datetime, timedelta
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from app.database import get_session_local
from app.models import KPIDefinition, KPIValue, KPIAlert, ActionPlan
logger = logging.getLogger("cma.alert_gen")
def _parse_threshold(expr: str) -> tuple:
"""解析阈值表达式,返回 (operator, value)
示例:
>=32000000 -> ('>=', 32000000)
<20 -> ('<', 20)
<=55 -> ('<=', 55)
>60 -> ('>', 60)
"""
m = re.match(r"(>=|<=|>|<|=|!=)\s*([\d.]+)", str(expr).strip())
if m:
return m.group(1), float(m.group(2))
return None, None
def cleanup_green_alerts(db_session) -> int:
"""Bug1修复: 清理历史遗留的green级别pending预警(正常值不应出现在待办)"""
greens = db_session.query(KPIAlert).filter(
KPIAlert.alert_level == "green",
KPIAlert.status.in_(["pending", "processing"]),
).all()
count = 0
for g in greens:
g.status = "resolved"
g.resolution = "自动清理: green(正常)级别不生成待处理预警"
g.resolved_at = datetime.now()
count += 1
if count:
db_session.commit()
logger.info(f" 清理历史green预警 {count} 条 → resolved")
return count
def _check_threshold(actual: float, threshold_expr: str, level: str) -> tuple:
"""检查实际值是否触发阈值,返回 (触发, 消息)"""
if not threshold_expr or actual is None:
return False, ""
op, val = _parse_threshold(threshold_expr)
if op is None:
return False, ""
triggered = False
if op == ">=" and actual >= val:
triggered = True
elif op == "<=" and actual <= val:
triggered = True
elif op == ">" and actual > val:
triggered = True
elif op == "<" and actual < val:
triggered = True
elif op == "=" and actual == val:
triggered = True
if triggered:
level_names = {"green": "正常", "yellow": "预警", "red": "紧急"}
msg = (f"KPI当前值 {actual:.2f},触发{level_names.get(level, level)}阈值 "
f"({threshold_expr})")
return True, msg
return False, ""
def run_alert_check(db_session, period: str = None) -> int:
"""检查所有KPI的实际值是否触发预警,返回新生成的预警数"""
if period is None:
period = datetime.now().strftime("%Y-%m")
kpis = db_session.query(KPIDefinition).filter(
KPIDefinition.status == "active"
).all()
new_count = 0
for kpi in kpis:
# 跳过无阈值的KPI
thr = {
"red": kpi.threshold_red,
"yellow": kpi.threshold_yellow,
"green": kpi.threshold_green,
}
if not any(thr.values()):
continue
# 获取该KPI当前期间的最新值
latest = db_session.query(KPIValue).filter(
KPIValue.kpi_id == kpi.id,
KPIValue.period == period,
).order_by(KPIValue.calculated_at.desc()).first()
if not latest or latest.actual_value is None:
continue
actual = latest.actual_value
# 从绿到红检查(绿灯最高优先级——满足即止)
# Bug1修复: green(正常)不生成pending预警,只对yellow/red落库
for level in ["green", "yellow", "red"]:
expr = thr[level]
if not expr:
continue
triggered, msg = _check_threshold(actual, expr, level)
if triggered:
if level == "green":
# 正常状态:不生成待处理预警(如有旧的red/yellow预警自动解除)
break
# 检查是否已有该期间该KPI同级别的预警
existing = db_session.query(KPIAlert).filter(
KPIAlert.kpi_id == kpi.id,
KPIAlert.kpi_value_id == latest.id,
KPIAlert.alert_level == level,
).first()
if existing:
# 已有预警,跳过
break
# 创建新预警
alert = KPIAlert(
kpi_id=kpi.id,
kpi_value_id=latest.id,
alert_level=level,
alert_message=f"{kpi.kpi_name}[{period}] {msg}",
status="pending",
)
db_session.add(alert)
db_session.flush() # 获取alert.id
new_count += 1
logger.info(f" 新增预警 [{level}] {kpi.kpi_name}: {msg}")
# Bug2修复: red/yellow预警自动创建行动计划(预警→行动闭环)
if level in ("red", "yellow"):
plan_title = f"改善: {kpi.kpi_name} {msg}"
if kpi.kpi_name and "现金" in kpi.kpi_name or kpi.kpi_code == "F_OP_CFLOW":
plan_title = f"资金缺口应对: {msg} —— 催收应收+安排融资"
elif kpi.kpi_code == "F_AR_DAYS":
plan_title = f"应收催收: {msg} —— 逾期客户专项跟进"
elif kpi.kpi_code == "C_REBATE_RATE":
plan_title = f"渠补谈判: {msg} —— 下游渠道返利谈判"
elif kpi.kpi_code == "F_COST_RATIO":
plan_title = f"费用压缩: {msg} —— 管理费削减计划"
plan = ActionPlan(
alert_id=alert.id,
kpi_id=kpi.id,
title=plan_title,
assignee="财务部",
priority="high" if level == "red" else "medium",
due_date=datetime.now().date() + timedelta(days=3 if level == "red" else 7),
created_by="alert_generator",
)
db_session.add(plan)
db_session.flush()
alert.action_plan_linked_id = plan.id
logger.info(f" ↳ 自动创建行动计划 #{plan.id}: {plan_title}")
break # 只取最高级别
elif level == "red" and not triggered:
# 红没触发,如果已有红色预警但当前不满足,自动降级或关闭
existing_red = db_session.query(KPIAlert).filter(
KPIAlert.kpi_id == kpi.id,
KPIAlert.kpi_value_id == latest.id,
KPIAlert.alert_level == "red",
KPIAlert.status.in_(["pending", "processing"]),
).first()
if existing_red:
existing_red.status = "resolved"
existing_red.resolution = "自动解除: 当前值不再触发红色阈值"
existing_red.resolved_at = datetime.now()
logger.info(f" 自动解除预警 [red] {kpi.kpi_name}")
db_session.commit()
return new_count
def generate_and_push(db_session) -> dict:
"""生成预警并推送,返回统计"""
period = datetime.now().strftime("%Y-%m")
# 0. Bug1修复: 先清理历史green预警
cleaned = cleanup_green_alerts(db_session)
# 1. 生成预警
logger.info(f"开始预警检查 ({period})...")
new_count = run_alert_check(db_session, period)
logger.info(f"预警检查完成: 新增 {new_count} 条")
# 2. 推送
pushed = 0
if new_count > 0:
try:
from app.utils.notifier import push_pending_alerts
pushed = push_pending_alerts(db_session)
logger.info(f"推送完成: {pushed} 条")
except Exception as e:
logger.error(f"推送失败: {e}")
return {"period": period, "new_alerts": new_count, "pushed": pushed, "cleaned_green": cleaned}
if __name__ == "__main__":
logging.basicConfig(
level=logging.INFO,
format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
)
db = get_session_local()()
try:
result = generate_and_push(db)
print(f"预警检查: {result['new_alerts']}条新预警 / {result['pushed']}条已推送")
finally:
db.close()