Add scripts and pipeline to poll for maven (#38980)

.circleci/config.yml

@@ -1564,6 +1564,19 @@ jobs:
                     -d "{\"event_type\": \"publish\", \"client_payload\": { \"version\": \"${CIRCLE_TAG:1}\" }}"
       # END: Stable releases
 
+  poll_maven:
+    docker:
+      - image: cimg/node:current
+    resource_class: small
+    steps:
+      - checkout_code_with_cache
+      - run_yarn
+      - run:
+          name: Poll Maven for Artifacts
+          command: |
+            node scripts/circleci/poll-maven.js
+
+
   # -------------------------
   #    JOBS: Nightly
   # -------------------------
@@ -1900,6 +1913,9 @@ workflows:
             - build_hermesc_linux
             - build_hermes_macos
             - build_hermesc_windows
+      - poll_maven:
+          requires:
+            -  build_and_publish_npm_package
 
   package_and_publish_release_dryrun:
     when:

scripts/circleci/poll-maven.js

@@ -0,0 +1,72 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+const fetch = require('node-fetch');
+const fs = require('fs');
+
+const baseMavenRepo = 'https://repo1.maven.org/maven2/com/facebook/react';
+const artifacts = ['react-native-artifacts', 'react-android', 'hermes-android'];
+const humanNames = {
+  'react-native-artifacts': 'Hermes for iOS',
+  'react-android': 'React Native for Android',
+  'hermes-android': 'Hermes for Android',
+};
+const ping_minutes = 5;
+const max_hours = 5;
+const ping_interval = ping_minutes * 60 * 1000; // 5 minutes
+const max_wait = max_hours * 60 * 60 * 1000; // 5 hours
+
+const startTime = Date.now();
+
+async function pingMaven(artifact, rnVersion) {
+  const url = `${baseMavenRepo}/${artifact}/${rnVersion}`;
+  const response = await fetch(url, {method: 'HEAD'});
+  if (response.status === 200) {
+    console.log(`Found artifact for ${humanNames[artifact]}\n`);
+    return;
+  } else if (response.status !== 404) {
+    throw new Error(
+      `Unexpected response code ${response.status} for ${humanNames[artifact]}`,
+    );
+  }
+
+  const elapsedTime = Date.now() - startTime;
+  if (elapsedTime > max_wait) {
+    throw new Error(`${max_hours} hours has passed. Exiting.`);
+  }
+  // Wait a bit
+  console.log(
+    `${humanNames[artifact]} not available yet. Waiting ${ping_minutes} minutes.\n`,
+  );
+  await new Promise(resolve => setTimeout(resolve, ping_interval));
+  await pingMaven(url);
+}
+
+async function main() {
+  const package = JSON.parse(
+    fs.readFileSync('packages/react-native/package.json', 'utf8'),
+  );
+  const rnVersion = package.version;
+
+  if (rnVersion === '1000.0.0') {
+    console.log(
+      'We are not on a release branch when a release has been initiated. Exiting.',
+    );
+    return;
+  }
+
+  console.log(`Checking artifacts for React Native version ${rnVersion}\n`);
+
+  for (const artifact of artifacts) {
+    console.log(`Start pinging for ${humanNames[artifact]}`);
+    await pingMaven(artifact, rnVersion);
+  }
+}
+
+main();