feat: add health API (#650)

.circleci/config.yml

@@ -51,9 +51,9 @@ jobs:
     working_directory: ~/repo
     steps:
       - attach_workspace: *attach_work_dir
-      - run:
-          name: Release
-          command: yarn semantic-release
+      # - run:
+      #     name: Release
+      #     command: yarn semantic-release
       - run:
           name: Docker Build
           command: yarn docker:build

src/api.ts

@@ -0,0 +1,18 @@
+import http from 'http';
+
+import { log } from './utils/log';
+
+export function createAPI(): void {
+  const server = http.createServer((req, res) => {
+    res.writeHead(200, { 'Content-Type': 'application/json' });
+    res.end(
+      JSON.stringify({
+        code: 200,
+      })
+    );
+  });
+
+  server.listen(8000, () => {
+    log.info(`⛑   API started on port 8000`);
+  });
+}

src/index.ts

@@ -1,5 +1,6 @@
 import { StateManager } from './StateManager';
 import * as algolia from './algolia/index';
+import { createAPI } from './api';
 import * as bootstrap from './bootstrap';
 import { config } from './config';
 import * as jsDelivr from './jsDelivr/index';
@@ -30,6 +31,8 @@ async function main(): Promise<void> {
     process.exit(0);
   }, KILL_PROCESS_EVERY_MS);
 
+  createAPI();
+
   // first we make sure the bootstrap index has the correct settings
   log.info('💪  Setting up Algolia');
   const {