From d8f6981be1f05772895593cdd436e6c0d4cdfd9a Mon Sep 17 00:00:00 2001
From: Flea Flicker <fleaflicker@paperclip.ing>
Date: Sun, 9 Aug 2026 09:48:10 +0000
Subject: [PATCH] =?UTF-8?q?revert(api):=20remove=20/health/ready=20?=
 =?UTF-8?q?=E2=80=94=20superseded=20by=20/api/readyz=20(GRO-2689)?=
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CTO architectural ruling (PR #235 review): K8s readiness/liveness probes
must remain DB-less to prevent transient DB blips from cycling pods. The
/api/readyz endpoint (GRO-2687) is the canonical DB-health signal for the
monitoring layer and satisfies the GRO-2678 detection-gap requirement.

Removes:
- GET /health/ready route from src/index.ts
- src/__tests__/health-ready.test.ts

Refs GRO-2689, GRO-2687, GRO-2678
---
 src/__tests__/health-ready.test.ts | 102 -----------------------------
 src/index.ts                       |  11 ----
 2 files changed, 113 deletions(-)
 delete mode 100644 src/__tests__/health-ready.test.ts

diff --git a/src/__tests__/health-ready.test.ts b/src/__tests__/health-ready.test.ts
deleted file mode 100644
index 6a8ea88..0000000
--- a/src/__tests__/health-ready.test.ts
+++ /dev/null
@@ -1,102 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from "vitest";
-import { Hono } from "hono";
-
-// ─── Mock db module ───────────────────────────────────────────────────────────
-
-let selectImpl: () => Promise<unknown>;
-
-vi.mock("@groombook/db", () => {
-  const staff = new Proxy(
-    { _name: "staff" },
-    {
-      get(_target, prop) {
-        if (prop === "_name") return "staff";
-        return { table: "staff", column: prop };
-      },
-    }
-  );
-
-  return {
-    getDb: () => ({
-      select: (_fields: unknown) => ({
-        from: (_table: unknown) => ({
-          limit: (_n: number) => selectImpl(),
-        }),
-      }),
-    }),
-    staff,
-  };
-});
-
-// ─── Build test app ───────────────────────────────────────────────────────────
-
-async function makeApp() {
-  const { getDb, staff } = await import("@groombook/db");
-
-  const app = new Hono();
-  app.get("/health/ready", async (c) => {
-    try {
-      await getDb().select({ id: staff.id }).from(staff).limit(1);
-      return c.json({ status: "ready" }, 200);
-    } catch (err) {
-      const pgCode = (err as Record<string, unknown>).code ?? "unknown";
-      console.error("[health/ready] DB check failed:", pgCode);
-      return c.json({ status: "degraded" }, 503);
-    }
-  });
-  return app;
-}
-
-// ─── Tests ────────────────────────────────────────────────────────────────────
-
-describe("GET /health/ready", () => {
-  beforeEach(() => {
-    vi.restoreAllMocks();
-  });
-
-  it("returns 200 {status:'ready'} when DB query succeeds", async () => {
-    selectImpl = () => Promise.resolve([{ id: "staff-1" }]);
-
-    const app = await makeApp();
-    const res = await app.request("/health/ready", { method: "GET" });
-    const body = (await res.json()) as Record<string, unknown>;
-
-    expect(res.status).toBe(200);
-    expect(body.status).toBe("ready");
-  });
-
-  it("returns 503 {status:'degraded'} when DB query throws (schema dropped)", async () => {
-    const schemaErr = Object.assign(new Error("relation \"staff\" does not exist"), { code: "42P01" });
-    selectImpl = () => Promise.reject(schemaErr);
-
-    const consoleSpy = vi.spyOn(console, "error").mockImplementation(() => {});
-
-    const app = await makeApp();
-    const res = await app.request("/health/ready", { method: "GET" });
-    const body = (await res.json()) as Record<string, unknown>;
-
-    expect(res.status).toBe(503);
-    expect(body.status).toBe("degraded");
-
-    // Must not leak SQL error details in the response body
-    expect(JSON.stringify(body)).not.toContain("42P01");
-    expect(JSON.stringify(body)).not.toContain("relation");
-
-    consoleSpy.mockRestore();
-  });
-
-  it("returns 503 {status:'degraded'} on any DB connection error", async () => {
-    selectImpl = () => Promise.reject(new Error("ECONNREFUSED"));
-
-    const consoleSpy = vi.spyOn(console, "error").mockImplementation(() => {});
-
-    const app = await makeApp();
-    const res = await app.request("/health/ready", { method: "GET" });
-    const body = (await res.json()) as Record<string, unknown>;
-
-    expect(res.status).toBe(503);
-    expect(body.status).toBe("degraded");
-
-    consoleSpy.mockRestore();
-  });
-});
diff --git a/src/index.ts b/src/index.ts
index 99a66fa..6da003b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -65,17 +65,6 @@ app.use(
 app.get("/health", (c) => c.json({ status: "ok" }));
 // /api/health: used by Gateway HTTPRoute (/api/* → API pod)
 app.get("/api/health", (c) => c.json({ status: "ok" }));
-// /health/ready: DB-touching readiness probe — K8s removes pod from endpoints when schema is dropped (GRO-2689)
-app.get("/health/ready", async (c) => {
-  try {
-    await getDb().select({ id: staff.id }).from(staff).limit(1);
-    return c.json({ status: "ready" }, 200);
-  } catch (err) {
-    const pgCode = (err as Record<string, unknown>).code ?? "unknown";
-    console.error("[health/ready] DB check failed:", pgCode);
-    return c.json({ status: "degraded" }, 503);
-  }
-});
 // /api/readyz: DB-touching deep health check consumed by monitoring (not K8s probes)
 // Distinct from /health so a dropped schema triggers an alert without cycling pods (GRO-2678)
 app.get("/api/readyz", async (c) => {