fix(health): разворачивать CNAME до IP в статусе таблицы

Пробы CNAME больше не ключуются hostname: цель разворачивается до origin/пула, а уже сохранённый статус по CNAME копируется на IP сервиса.

Co-authored-by: Cursor <[email protected]>

apps/api/src/services/service-config-service.ts

@@ -18,6 +18,7 @@ import {
   SYNC_PENDING_PUSH,
   SYNC_SYNCED,
   dnsRecordNamesMatch,
+  isIpLiteral,
   normalizeDnsRecordName,
 } from "@cfdm/shared";
 import type { CloudflareClient } from "../lib/cf-client.js";
@@ -344,6 +345,64 @@ async function buildView(db: Db, serviceId: number): Promise<ServiceView> {
   };
 }
 
+const HEALTH_RANK: Record<string, number> = {
+  down: 3,
+  degraded: 2,
+  unknown: 1,
+  up: 0,
+};
+
+function cnameLookupKeys(value: string, zoneName?: string | null): string[] {
+  const trimmed = value.trim();
+  if (!trimmed) return [];
+  const noDot = trimmed.replace(/\.+$/, "");
+  const lower = noDot.toLowerCase();
+  const keys = new Set([trimmed, noDot, lower]);
+  if (zoneName && !lower.includes(".")) {
+    keys.add(`${lower}.${zoneName.trim().toLowerCase().replace(/\.+$/, "")}`);
+  }
+  return [...keys];
+}
+
+type ServiceHealthRow = {
+  ip: string;
+  status: IpHealthState;
+  latency_ms: number | null;
+  last_checked_at: string | null;
+  last_error: string | null;
+  provider: ServiceView["ip_health"][number]["provider"];
+  colo: string | null;
+};
+
+/** Health rows keyed by CNAME hostname (legacy probes) applied to service IPs. */
+function fallbackCnameHealth(
+  rows: ServiceHealthRow[],
+  view: ServiceView,
+): ServiceHealthRow | undefined {
+  const cnameKeys = new Set<string>();
+  for (const domain of view.domains ?? []) {
+    const cname = domain.target_cname?.trim();
+    if (!cname) continue;
+    for (const key of cnameLookupKeys(cname, domain.zone_name)) {
+      cnameKeys.add(key);
+    }
+  }
+  const hostnameRows = rows.filter((row) => !isIpLiteral(row.ip));
+  if (hostnameRows.length === 0) return undefined;
+  const matched =
+    cnameKeys.size === 0
+      ? hostnameRows
+      : hostnameRows.filter((row) =>
+          cnameLookupKeys(row.ip).some((key) => cnameKeys.has(key)),
+        );
+  const candidates = matched.length > 0 ? matched : hostnameRows;
+  return candidates.reduce((worst, row) =>
+    (HEALTH_RANK[row.status] ?? 0) > (HEALTH_RANK[worst.status] ?? 0)
+      ? row
+      : worst,
+  );
+}
+
 function attachServiceHealth(
   db: Db,
   views: ServiceView[],
@@ -353,11 +412,16 @@ function attachServiceHealth(
   const ipHealthByService = repos.listIpHealthByServiceIds(db, ids);
   return views.map((view) => {
     const health = healthByService.get(view.id);
-    const byIp = new Map(
-      (ipHealthByService.get(view.id) ?? []).map((row) => [row.ip, row]),
+    const rows = ipHealthByService.get(view.id) ?? [];
+    const byIp = new Map(rows.map((row) => [row.ip, row]));
+    const cnameFallback = fallbackCnameHealth(rows, view);
+    const aRecordIps = new Set(
+      (view.domains ?? []).flatMap((domain) =>
+        domain.target_cname?.trim() ? [] : (domain.target_ips ?? []),
+      ),
     );
     const ip_health = (view.ips ?? []).map((ip) => {
-      const row = byIp.get(ip);
+      const row = byIp.get(ip) ?? (aRecordIps.has(ip) ? undefined : cnameFallback);
       return {
         ip,
         status: row?.status ?? ("unknown" as const),

apps/api/test/health-check.test.ts

@@ -235,4 +235,95 @@ describe("health-check state derivation via runAllChecks", () => {
     expect(targets).toHaveLength(1);
     expect(targets[0]?.verify_tls).toBe(true);
   });
+
+  it("unwraps CNAME target to origin A record IPs", async () => {
+    const { createMemoryDb, repos, runMigrations } = await import("@cfdm/db");
+    const { db, sqlite } = createMemoryDb();
+    runMigrations(sqlite);
+
+    const domain = repos.createDomain(db, null, "rkns.top", "zone-id");
+    repos.insertDnsRecord(
+      db,
+      domain.id,
+      "A",
+      "ihome",
+      "2.59.161.102",
+      1,
+      false,
+      null,
+      "synced",
+      "cf",
+      null,
+    );
+    const service = repos.createService(db, "RW Sub", "rw-sub");
+    const binding = repos.insertBinding(db, domain.id, service.id, "s", null);
+    repos.setBindingCnameTarget(db, binding.id, "ihome.rkns.top");
+    repos.updateBindingLbConfig(db, binding.id, {
+      health_check_enabled: true,
+      health_check_type: "tcp",
+      health_check_port: 443,
+    });
+
+    const targets = repos.listHealthCheckTargets(db);
+    expect(targets).toHaveLength(1);
+    expect(targets[0]?.ip).toBe("2.59.161.102");
+    expect(targets[0]?.hostname).toBe("s.rkns.top");
+  });
+
+  it("unwraps CNAME target to service IP pool when origin DNS is empty", async () => {
+    const { createMemoryDb, repos, runMigrations } = await import("@cfdm/db");
+    const { db, sqlite } = createMemoryDb();
+    runMigrations(sqlite);
+
+    const domain = repos.createDomain(db, null, "rkns.top", "zone-id");
+    const service = repos.createService(db, "RW Sub", "rw-sub");
+    repos.replaceServiceIps(db, service.id, ["2.59.161.102"]);
+    const binding = repos.insertBinding(db, domain.id, service.id, "s", null);
+    repos.setBindingCnameTarget(db, binding.id, "ihome.rkns.top");
+    repos.updateBindingLbConfig(db, binding.id, {
+      health_check_enabled: true,
+      health_check_type: "tcp",
+      health_check_port: 443,
+    });
+
+    const targets = repos.listHealthCheckTargets(db);
+    expect(targets).toHaveLength(1);
+    expect(targets[0]?.ip).toBe("2.59.161.102");
+    expect(targets[0]?.hostname).toBe("s.rkns.top");
+  });
+});
+
+describe("CNAME health mapped onto service IPs", () => {
+  it("getView copies CNAME-keyed health onto the service IP row", async () => {
+    const { createMemoryDb, repos, runMigrations } = await import("@cfdm/db");
+    const { getView } = await import("../src/services/service-config-service.js");
+    const { db, sqlite } = createMemoryDb();
+    runMigrations(sqlite);
+
+    const domain = repos.createDomain(db, null, "rkns.top", "zone-id");
+    const service = repos.createService(db, "RW Sub", "rw-sub");
+    repos.replaceServiceIps(db, service.id, ["2.59.161.102"]);
+    const binding = repos.insertBinding(db, domain.id, service.id, "s", null);
+    repos.setBindingCnameTarget(db, binding.id, "ihome.rkns.top");
+    repos.upsertIpHealthStatus(
+      db,
+      "binding",
+      binding.id,
+      "ihome.rkns.top",
+      "up",
+      12,
+      0,
+      null,
+    );
+
+    const view = await getView(db, service.id);
+    expect(view.health_status).toBe("up");
+    expect(view.ip_health).toEqual([
+      expect.objectContaining({
+        ip: "2.59.161.102",
+        status: "up",
+        latency_ms: 12,
+      }),
+    ]);
+  });
 });