1625907380
- 判定=按 sort_order 升序首个 min_score≤总分，边界相邻不算重叠 - 新增同样执行重叠判定（判定表语义下插出重叠即脏配置） - 等级配置无下游引用（评级为纯计算器，对照表 #25），允许清空 Co-Authored-By: Claude Code <noreply@anthropic.com>
280 lines
11 KiB
Python
280 lines
11 KiB
Python
"""客户评级等级配置业务编排。
|
||
|
||
评级计算器定位（对照表 #25）：仅打分工具、不影响绩效金额，评分记录不落库
|
||
——本表承载的等级映射是**判定表**，判定规则为按 sort_order 升序取首个
|
||
min_score ≤ 总分的等级，max_score 仅展示。两条硬约束（违反会算错等级）：
|
||
|
||
- 分值全程 ``Decimal``：入参出参 str、schema 拦格式，service 层负责字符串
|
||
到 Decimal 的转换与落库；0≤min≤max≤100 的区间校验在**审计上下文内**
|
||
完成，失败的 400 同样留痕（2026-10-13 定稿口径）
|
||
- 区间互不重叠：重叠会让同一总分命中多个等级（或两段都跳过），判定表
|
||
失效。判定为**闭区间两两相交**：任一其他等级满足
|
||
``other.min_score <= 新 max 且 新 min <= other.max_score`` 即重叠。
|
||
边界相邻不算重叠（前段 max=89、后段 min=90）—— 种子 A/B/C/D 即按
|
||
相邻铺满 0-100，且判定本身是单边 min_score ≤ 总分，边界归 sort_order
|
||
靠前的等级，相邻无歧义
|
||
|
||
删除允许清空：等级表无下游引用（评分记录不落库，判定只读本表现值、不
|
||
回溯历史快照），物理删除无悬空风险；全部删空后计算器只显示总分、不出
|
||
等级（前端已对应提示），故不强制保留任何一条。
|
||
"""
|
||
|
||
import logging
|
||
from decimal import Decimal
|
||
|
||
from sqlalchemy.exc import IntegrityError
|
||
from sqlalchemy.orm import Session
|
||
|
||
from app.core.constants import (
|
||
ACTION_CREATE,
|
||
ACTION_DELETE,
|
||
ACTION_UPDATE,
|
||
MODULE_RATING,
|
||
)
|
||
from app.core.exceptions import BadRequestError, NotFoundError
|
||
from app.models import CustomerRatingGrade, User
|
||
from app.repositories import rating_repository
|
||
from app.schemas.rating import RatingGradeCreateIn, RatingGradeOut, RatingGradeUpdateIn
|
||
from app.services import audit_service
|
||
from app.services.audit_service import AuditRecord, RequestMeta
|
||
|
||
logger = logging.getLogger(__name__)
|
||
|
||
# 分值域上下界（Decimal 常量，禁用 float 参与比较）
|
||
_SCORE_FLOOR = Decimal("0")
|
||
_SCORE_CEIL = Decimal("100")
|
||
|
||
# 唯一键冲突的 MySQL 错误码（pymysql 原始异常 args 首位）
|
||
_ERR_DUP_ENTRY = 1062
|
||
|
||
|
||
def _to_out(grade: CustomerRatingGrade) -> RatingGradeOut:
|
||
"""ORM 对象转响应模型。分值 Decimal → str（分值红线出参口径）。"""
|
||
return RatingGradeOut(
|
||
id=grade.id,
|
||
grade_name=grade.grade_name,
|
||
min_score=str(grade.min_score),
|
||
max_score=str(grade.max_score),
|
||
sort_order=grade.sort_order,
|
||
remark=grade.remark,
|
||
create_time=grade.create_time,
|
||
update_time=grade.update_time,
|
||
)
|
||
|
||
|
||
def _to_decimal(value: str) -> Decimal:
|
||
"""数字字符串转 Decimal。
|
||
|
||
入参已 str 化再进 Decimal：即使上游口径变化传入数字类型，也不经 float
|
||
二进制近似，分值红线在最后一道转换处仍然成立。schema 已保证可解析，
|
||
此处不再重复校验。
|
||
"""
|
||
return Decimal(str(value))
|
||
|
||
|
||
def _ensure_score_range(min_score: Decimal, max_score: Decimal) -> None:
|
||
"""区间合法性：0 ≤ min_score ≤ max_score ≤ 100。
|
||
|
||
超界/倒挂任一不满足即「分值区间不合法」——统一一条消息不区分具体
|
||
越界方式，前端据此整体提示。须在审计上下文内调用，失败也要留痕。
|
||
"""
|
||
if not (_SCORE_FLOOR <= min_score <= max_score <= _SCORE_CEIL):
|
||
raise BadRequestError("分值区间不合法")
|
||
|
||
|
||
def _ensure_no_overlap(
|
||
grades: list[CustomerRatingGrade],
|
||
new_min: Decimal,
|
||
new_max: Decimal,
|
||
*,
|
||
exclude_id: int | None = None,
|
||
) -> None:
|
||
"""新区间与既有等级**不得重叠**（闭区间两两相交判定）。
|
||
|
||
任一其他等级满足 ``other.min_score <= new_max 且 new_min <= other.max_score``
|
||
即重叠，400 并点名冲突等级，便于前端定位到具体行。边界相邻不算重叠
|
||
（见模块 docstring）。exclude_id 供编辑时排除自身。
|
||
|
||
:raises BadRequestError: 分值区间与等级 X 重叠
|
||
"""
|
||
for other in grades:
|
||
if exclude_id is not None and other.id == exclude_id:
|
||
continue
|
||
if other.min_score <= new_max and new_min <= other.max_score:
|
||
raise BadRequestError(f"分值区间与等级 {other.grade_name} 重叠")
|
||
|
||
|
||
def _is_duplicate_entry(exc: IntegrityError) -> bool:
|
||
"""判断 IntegrityError 是否为 MySQL 1062（唯一键冲突）。
|
||
|
||
只有 1062 是「已存在」语义，可转业务提示；其余完整性错误（外键、
|
||
数据溢出等）语义未知，必须原样上抛交由全局处理器记 500，不能吞成 400。
|
||
"""
|
||
orig_args = getattr(exc.orig, "args", ())
|
||
return bool(orig_args) and orig_args[0] == _ERR_DUP_ENTRY
|
||
|
||
|
||
def _raise_if_duplicate(exc: IntegrityError) -> None:
|
||
"""唯一键冲突统一转业务提示；其余完整性错误原样重抛。"""
|
||
if _is_duplicate_entry(exc):
|
||
raise BadRequestError("该等级名称已存在") from exc
|
||
raise exc
|
||
|
||
|
||
def list_grades(session: Session) -> list[RatingGradeOut]:
|
||
"""全量等级列表，按判定顺序（sort_order 升序）直出。
|
||
|
||
不分页：等级映射是判定表，数量个位数，分页无意义。
|
||
"""
|
||
return [_to_out(grade) for grade in rating_repository.list_all(session)]
|
||
|
||
|
||
def create_grade(
|
||
session: Session,
|
||
payload: RatingGradeCreateIn,
|
||
*,
|
||
operator: User,
|
||
meta: RequestMeta | None = None,
|
||
) -> RatingGradeOut:
|
||
"""新增评级等级。
|
||
|
||
区间须 0≤min≤max≤100 且与既有等级不重叠（新增同样判重叠：判定表
|
||
语义下重叠即脏配置，没有「先停用旧区间」之类的两阶段配置手段）。
|
||
|
||
:raises BadRequestError: 分值区间不合法 / 分值区间与等级 X 重叠 / 该等级名称已存在
|
||
"""
|
||
with audit_service.audit(
|
||
session,
|
||
operator=operator,
|
||
record=AuditRecord(
|
||
module=MODULE_RATING,
|
||
action=ACTION_CREATE,
|
||
summary=f"新增评级等级 {payload.grade_name}",
|
||
request_data=payload.model_dump(exclude_none=True),
|
||
),
|
||
meta=meta,
|
||
):
|
||
# 值域校验在审计上下文内：分值非法的 400 也要留痕（成功与失败都记）
|
||
new_min = _to_decimal(payload.min_score)
|
||
new_max = _to_decimal(payload.max_score)
|
||
_ensure_score_range(new_min, new_max)
|
||
_ensure_no_overlap(rating_repository.list_all(session), new_min, new_max)
|
||
if rating_repository.get_by_name(session, payload.grade_name) is not None:
|
||
raise BadRequestError("该等级名称已存在")
|
||
|
||
grade = CustomerRatingGrade(
|
||
grade_name=payload.grade_name,
|
||
min_score=new_min,
|
||
max_score=new_max,
|
||
sort_order=payload.sort_order,
|
||
remark=payload.remark,
|
||
)
|
||
try:
|
||
rating_repository.create(session, grade)
|
||
# 响应与后置动作全部在 commit 之前完成（见 product_service 同处说明）
|
||
out = _to_out(grade)
|
||
session.commit()
|
||
except IntegrityError as exc:
|
||
# 先查后写不是原子操作：并发提交同名等级会撞 uk_customer_rating_grades_grade_name
|
||
session.rollback()
|
||
_raise_if_duplicate(exc)
|
||
|
||
logger.info("新增评级等级 | grade_id=%s | name=%s", grade.id, payload.grade_name)
|
||
return out
|
||
|
||
|
||
def update_grade(
|
||
session: Session,
|
||
grade_id: int,
|
||
payload: RatingGradeUpdateIn,
|
||
*,
|
||
operator: User,
|
||
meta: RequestMeta | None = None,
|
||
) -> RatingGradeOut:
|
||
"""编辑评级等级（全量替换）。
|
||
|
||
区间与其他等级不得重叠 —— 重叠判定以**修改后的区间**对全部既有等级
|
||
（排除自身）两两相交，命中即 400 并点名冲突等级。
|
||
|
||
:raises NotFoundError: 评级等级不存在
|
||
:raises BadRequestError: 分值区间不合法 / 分值区间与等级 X 重叠 / 该等级名称已存在
|
||
"""
|
||
grade = rating_repository.get_by_id(session, grade_id)
|
||
with audit_service.audit(
|
||
session,
|
||
operator=operator,
|
||
record=AuditRecord(
|
||
module=MODULE_RATING,
|
||
action=ACTION_UPDATE,
|
||
summary=f"修改评级等级 {grade.grade_name if grade else f'#{grade_id}'}",
|
||
request_data=payload.model_dump(exclude_none=True),
|
||
),
|
||
meta=meta,
|
||
):
|
||
# 值域校验在审计上下文内（同 create 口径）
|
||
new_min = _to_decimal(payload.min_score)
|
||
new_max = _to_decimal(payload.max_score)
|
||
_ensure_score_range(new_min, new_max)
|
||
if grade is None:
|
||
raise NotFoundError("评级等级不存在")
|
||
|
||
_ensure_no_overlap(
|
||
rating_repository.list_all(session), new_min, new_max, exclude_id=grade_id
|
||
)
|
||
existed = rating_repository.get_by_name(session, payload.grade_name)
|
||
if existed is not None and existed.id != grade_id:
|
||
raise BadRequestError("该等级名称已存在")
|
||
|
||
grade.grade_name = payload.grade_name
|
||
grade.min_score = new_min
|
||
grade.max_score = new_max
|
||
grade.sort_order = payload.sort_order
|
||
grade.remark = payload.remark
|
||
out = _to_out(grade)
|
||
try:
|
||
session.commit()
|
||
except IntegrityError as exc:
|
||
# 改名可能撞 uk_customer_rating_grades_grade_name（本行改值与他人既有数据重合）
|
||
session.rollback()
|
||
_raise_if_duplicate(exc)
|
||
|
||
logger.info("修改评级等级 | grade_id=%s | name=%s", grade_id, payload.grade_name)
|
||
return out
|
||
|
||
|
||
def delete_grade(
|
||
session: Session,
|
||
grade_id: int,
|
||
*,
|
||
operator: User,
|
||
meta: RequestMeta | None = None,
|
||
) -> None:
|
||
"""物理删除评级等级。
|
||
|
||
等级表无下游引用 —— 评级是纯计算器不落评分记录（对照表 #25），判定
|
||
只读本表现值、不回溯历史快照，故可物理删除且无需锁行防并发引用。
|
||
|
||
**允许清空**：全部删空后计算器只显示总分、不出等级（前端已对应提示），
|
||
不强制保留任何一条。
|
||
|
||
:raises NotFoundError: 评级等级不存在
|
||
"""
|
||
grade = rating_repository.get_by_id(session, grade_id)
|
||
with audit_service.audit(
|
||
session,
|
||
operator=operator,
|
||
record=AuditRecord(
|
||
module=MODULE_RATING,
|
||
action=ACTION_DELETE,
|
||
summary=f"删除评级等级 {grade.grade_name if grade else f'#{grade_id}'}",
|
||
),
|
||
meta=meta,
|
||
):
|
||
if grade is None:
|
||
raise NotFoundError("评级等级不存在")
|
||
|
||
grade_name = grade.grade_name # 固化：对象随删除失效
|
||
rating_repository.delete(session, grade)
|
||
session.commit()
|
||
logger.info("删除评级等级 | grade_name=%s", grade_name)
|