feat: 统计API（卡片/漏斗/趋势/分布/推送健康，逐库聚合禁ATTACH）

Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-10-13 11:24:30 +08:00
parent ec55bc38ab
commit acf5777ff2
4 changed files with 765 additions and 0 deletions
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+"""统计 API(Phase 2 Task 9,spec §7.6): /api/platform/stats(超管,可
+?tenant= 单租户下钻)与 /api/platform/tenants/{slug}/stats(本租户管理员)。
+
+聚合逻辑全在 app/platform/stats.py(纯查询函数);本层只做鉴权、日期解析
+(复用 data_routes 的 _parse_dt——ISO 日期/日期时间,日期-only 的 to 含
+当日全天,边界含,naive UTC)与 runtime 获取。
+
+多租户合并纪律(**禁 ATTACH**,spec §7.6: 默认上限 10 个附加库):
+逐租户库查询 → merge_stats 应用层合并。合并范围:
+- 含停用租户——Task 8 偏差 4 语义(后台可见停用租户数据)在统计同样
+  适用: 停用只是聊天面 503,历史数据仍属后台可见资产;
+- 跳过库文件不存在的未懒建租户——零数据等价,且不为一次统计主动建
+  空库(保持 engine 懒建纪律;与 main.lifespan 启动清扫同一 db_path.
+  exists() 判据,差异是清扫只扫 active、统计含停用,口径在此声明)。
+显式单租户(?tenant= 与 /tenants/{slug}/stats)沿用 data_routes 的
+_runtime_by_slug 语义: 未懒建租户首次查询触发建库(Task 8 语义,空
+统计 200 不炸)。
+"""
+from fastapi import APIRouter, Depends, Query, Request
+
+from app.platform.auth import require_super
+from app.platform.registry import TenantRuntime
+from app.platform.routes.data_routes import _parse_dt, _runtime_by_slug
+from app.platform.routes.tenant_routes import _tenant_guard
+from app.platform.stats import collect_stats, merge_stats
+
+router = APIRouter(prefix="/api/platform", tags=["platform-stats"])
+
+
+def _bounds(from_raw: str | None, to_raw: str | None) -> tuple:
+    """?from/&to= → (from_dt, to_dt) naive UTC 闭区间(解析/报错同 data_routes)。"""
+    bound_from = _parse_dt(from_raw, "from") if from_raw else None
+    bound_to = _parse_dt(to_raw, "to", end_of_day=True) if to_raw else None
+    return bound_from, bound_to
+
+
+async def _stats_for(
+        rt: TenantRuntime, bound_from, bound_to) -> dict:
+    """单个就绪 runtime 的统计(租户库 session 上跑全部聚合)。"""
+    async with rt.session_factory() as db:
+        return await collect_stats(db, from_dt=bound_from, to_dt=bound_to)
+
+
+@router.get("/stats")
+async def platform_stats(
+        request: Request,
+        tenant: str | None = None,
+        from_dt: str | None = Query(default=None, alias="from"),
+        to_dt: str | None = Query(default=None, alias="to"),
+        user=Depends(require_super)):
+    """平台统计(超管): 缺省全部租户合并(逐库查询应用层合并,禁 ATTACH),
+    ?tenant=slug 单租户下钻(未知 slug 404)。?from/&to= 闭区间筛选。"""
+    bound_from, bound_to = _bounds(from_dt, to_dt)
+    if tenant is not None:
+        rt = await _runtime_by_slug(request, tenant)
+        return await _stats_for(rt, bound_from, bound_to)
+
+    registry = request.app.state.registry
+    parts = []
+    for rt in registry.runtimes():
+        # 合并范围口径见模块 docstring: 含停用、跳过无库文件(不建空库)
+        if not rt.db_path.exists():
+            continue
+        ready = await registry.ensure_ready(rt)
+        parts.append(await _stats_for(ready, bound_from, bound_to))
+    return merge_stats(parts)
+
+
+@router.get("/tenants/{slug}/stats")
+async def tenant_stats(
+        slug: str, request: Request,
+        from_dt: str | None = Query(default=None, alias="from"),
+        to_dt: str | None = Query(default=None, alias="to"),
+        user=Depends(_tenant_guard)):
+    """单租户统计(本租户管理员或超管): 查询/懒建语义同 data_routes。"""
+    bound_from, bound_to = _bounds(from_dt, to_dt)
+    rt = await _runtime_by_slug(request, slug)
+    return await _stats_for(rt, bound_from, bound_to)