feat(health): деплоить probe-Worker из CFDM и опрашивать цели с edge

Worker сам ходит на origin по Cron Trigger; CFDM кладёт цели в KV и забирает результаты без POST /probe.

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

apps/api/src/lib/cloudflare/http.ts

@@ -17,6 +17,15 @@ export function mapCloudflareFailure(
 ): AppError {
   const lower = message.toLowerCase();
   if (status === 401 || status === 403 || lower.includes("authentication")) {
+    if (
+      operation.includes("workers") ||
+      operation.includes("kv_") ||
+      operation.includes("accounts")
+    ) {
+      return AppError.cloudflareAuthFailed(
+        "Токену нужны права Account: Workers Scripts Write и Workers KV Storage Write. Zone DNS недостаточно.",
+      );
+    }
     return AppError.cloudflareAuthFailed(
       "Cloudflare отклонил токен. Проверьте CLOUDFLARE_API_TOKEN.",
     );
@@ -67,6 +76,40 @@ export async function handleCfResponse<T>(
   return body.result;
 }
 
+/** KV PUT / schedules often return `{ success: true }` without `result`. */
+export async function handleCfSuccess(
+  response: Response,
+  operation: string,
+): Promise<void> {
+  if (response.status === 429) {
+    const wait = parseRetryAfter(response.headers) ?? 5000;
+    throw AppError.rateLimited(
+      `Cloudflare временно ограничил запросы. Повторите через ${Math.ceil(wait / 1000)} с.`,
+    );
+  }
+  const text = await response.text();
+  if (!text) {
+    if (!response.ok) {
+      throw mapCloudflareFailure(operation, response.status, String(response.status));
+    }
+    return;
+  }
+  let body: CfResponse<unknown>;
+  try {
+    body = JSON.parse(text) as CfResponse<unknown>;
+  } catch {
+    if (!response.ok) {
+      throw mapCloudflareFailure(operation, response.status, text.slice(0, 180));
+    }
+    return;
+  }
+  if (!body.success) {
+    const msg =
+      body.errors?.map((e) => e.message).join("; ") ?? "unknown cloudflare error";
+    throw mapCloudflareFailure(operation, response.status, msg);
+  }
+}
+
 export async function cfRequest<T>(
   token: string,
   path: string,

apps/api/src/lib/cloudflare/kv-service.ts

@@ -0,0 +1,100 @@
+import { CF_API_BASE, handleCfResponse, handleCfSuccess, mapCloudflareFailure } from "./http.js";
+
+export interface CfKvNamespace {
+  id: string;
+  title: string;
+}
+
+export function createKvAdapter(token: string) {
+  return {
+    async listNamespaces(accountId: string): Promise<CfKvNamespace[]> {
+      const all: CfKvNamespace[] = [];
+      let page = 1;
+      while (true) {
+        const url = new URL(
+          `${CF_API_BASE}/accounts/${accountId}/storage/kv/namespaces`,
+        );
+        url.searchParams.set("per_page", "100");
+        url.searchParams.set("page", String(page));
+        const response = await fetch(url.toString(), {
+          headers: { Authorization: `Bearer ${token}` },
+          signal: AbortSignal.timeout(30_000),
+        });
+        if (response.status >= 500 || response.status === 429) {
+          throw mapCloudflareFailure("kv_list", response.status, String(response.status));
+        }
+        const batch = await handleCfResponse<CfKvNamespace[]>(response, "kv_list");
+        all.push(...batch);
+        if (batch.length < 100) break;
+        page += 1;
+      }
+      return all;
+    },
+
+    async createNamespace(accountId: string, title: string): Promise<CfKvNamespace> {
+      const response = await fetch(
+        `${CF_API_BASE}/accounts/${accountId}/storage/kv/namespaces`,
+        {
+          method: "POST",
+          headers: {
+            Authorization: `Bearer ${token}`,
+            "Content-Type": "application/json",
+          },
+          body: JSON.stringify({ title }),
+          signal: AbortSignal.timeout(30_000),
+        },
+      );
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("kv_create", response.status, String(response.status));
+      }
+      return handleCfResponse<CfKvNamespace>(response, "kv_create");
+    },
+
+    async getValue(
+      accountId: string,
+      namespaceId: string,
+      key: string,
+    ): Promise<string | null> {
+      const response = await fetch(
+        `${CF_API_BASE}/accounts/${accountId}/storage/kv/namespaces/${namespaceId}/values/${encodeURIComponent(key)}`,
+        {
+          headers: { Authorization: `Bearer ${token}` },
+          signal: AbortSignal.timeout(30_000),
+        },
+      );
+      if (response.status === 404) return null;
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("kv_get", response.status, String(response.status));
+      }
+      if (!response.ok) {
+        const text = await response.text().catch(() => "");
+        throw mapCloudflareFailure("kv_get", response.status, text.slice(0, 180));
+      }
+      return response.text();
+    },
+
+    async putValue(
+      accountId: string,
+      namespaceId: string,
+      key: string,
+      value: string,
+    ): Promise<void> {
+      const response = await fetch(
+        `${CF_API_BASE}/accounts/${accountId}/storage/kv/namespaces/${namespaceId}/values/${encodeURIComponent(key)}`,
+        {
+          method: "PUT",
+          headers: {
+            Authorization: `Bearer ${token}`,
+            "Content-Type": "text/plain",
+          },
+          body: value,
+          signal: AbortSignal.timeout(30_000),
+        },
+      );
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("kv_put", response.status, String(response.status));
+      }
+      await handleCfSuccess(response, "kv_put");
+    },
+  };
+}

apps/api/src/lib/cloudflare/workers-service.ts

@@ -0,0 +1,142 @@
+import {
+  CF_API_BASE,
+  handleCfResponse,
+  handleCfSuccess,
+  mapCloudflareFailure,
+} from "./http.js";
+
+export interface CfAccount {
+  id: string;
+  name?: string;
+}
+
+export interface CfWorkersSubdomain {
+  subdomain?: string;
+  enabled?: boolean;
+}
+
+export function createWorkersAdapter(token: string) {
+  return {
+    async listAccounts(): Promise<CfAccount[]> {
+      const response = await fetch(`${CF_API_BASE}/accounts?per_page=50`, {
+        headers: { Authorization: `Bearer ${token}` },
+        signal: AbortSignal.timeout(30_000),
+      });
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("list_accounts", response.status, String(response.status));
+      }
+      return handleCfResponse<CfAccount[]>(response, "list_accounts");
+    },
+
+    async putScript(opts: {
+      accountId: string;
+      scriptName: string;
+      source: string;
+      kvNamespaceId: string;
+      filename?: string;
+    }): Promise<void> {
+      const filename = opts.filename ?? "index.mjs";
+      const metadata = {
+        main_module: filename,
+        compatibility_date: "2025-04-01",
+        bindings: [
+          {
+            type: "kv_namespace",
+            name: "HEALTH_KV",
+            namespace_id: opts.kvNamespaceId,
+          },
+        ],
+      };
+      const form = new FormData();
+      form.append(
+        "metadata",
+        new Blob([JSON.stringify(metadata)], { type: "application/json" }),
+      );
+      form.append(
+        filename,
+        new Blob([opts.source], { type: "application/javascript+module" }),
+        filename,
+      );
+      const response = await fetch(
+        `${CF_API_BASE}/accounts/${opts.accountId}/workers/scripts/${opts.scriptName}`,
+        {
+          method: "PUT",
+          headers: { Authorization: `Bearer ${token}` },
+          body: form,
+          signal: AbortSignal.timeout(60_000),
+        },
+      );
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("workers_put_script", response.status, String(response.status));
+      }
+      await handleCfSuccess(response, "workers_put_script");
+    },
+
+    async putSchedules(
+      accountId: string,
+      scriptName: string,
+      crons: string[],
+    ): Promise<void> {
+      const response = await fetch(
+        `${CF_API_BASE}/accounts/${accountId}/workers/scripts/${scriptName}/schedules`,
+        {
+          method: "PUT",
+          headers: {
+            Authorization: `Bearer ${token}`,
+            "Content-Type": "application/json",
+          },
+          body: JSON.stringify(crons.map((cron) => ({ cron }))),
+          signal: AbortSignal.timeout(30_000),
+        },
+      );
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("workers_put_schedules", response.status, String(response.status));
+      }
+      await handleCfSuccess(response, "workers_put_schedules");
+    },
+
+    async enableWorkersDev(
+      accountId: string,
+      scriptName: string,
+    ): Promise<void> {
+      const response = await fetch(
+        `${CF_API_BASE}/accounts/${accountId}/workers/scripts/${scriptName}/subdomain`,
+        {
+          method: "POST",
+          headers: {
+            Authorization: `Bearer ${token}`,
+            "Content-Type": "application/json",
+          },
+          body: JSON.stringify({ enabled: true }),
+          signal: AbortSignal.timeout(30_000),
+        },
+      );
+      if (response.status === 409) return;
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("workers_subdomain", response.status, String(response.status));
+      }
+      if (!response.ok && response.status !== 200 && response.status !== 201) {
+        await handleCfSuccess(response, "workers_subdomain");
+      }
+    },
+
+    async getWorkersSubdomain(accountId: string): Promise<string | null> {
+      const response = await fetch(
+        `${CF_API_BASE}/accounts/${accountId}/workers/subdomain`,
+        {
+          headers: { Authorization: `Bearer ${token}` },
+          signal: AbortSignal.timeout(30_000),
+        },
+      );
+      if (response.status === 404) return null;
+      if (response.status >= 500 || response.status === 429) {
+        throw mapCloudflareFailure("workers_get_subdomain", response.status, String(response.status));
+      }
+      const result = await handleCfResponse<CfWorkersSubdomain>(
+        response,
+        "workers_get_subdomain",
+      );
+      return result.subdomain?.trim() || null;
+    },
+  };
+}