add cron script to regularly check for latest version

.github/workflows/build.yml

@@ -3,7 +3,7 @@ name: Docker Build
 on:
   workflow_dispatch:
     inputs:
-      prestoVersion:
+      version:
         description: 'Presto version to build'
         required: true
         type: string
@@ -16,6 +16,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - run: echo "Building prestodb-sandbox:${{ inputs.version }}"
       - name: Checkout
         uses: actions/checkout@v4
       - name: Docker meta
@@ -24,7 +25,7 @@ jobs:
         with:
           images: ghcr.io/popsql/prestodb-sandbox
           tags: |
-            type=raw,value=${{ inputs.prestoVersion }}
+            type=raw,value=${{ inputs.version }}
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx

.github/workflows/version_check.yml

@@ -0,0 +1,19 @@
+name: Version Check
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup node 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+      - run: node scripts/trigger_workflow.js

scripts/trigger_workflow.js

@@ -0,0 +1,84 @@
+/**
+ * Script that checks what the latest version of presto is, and triggers our build.yml workflow
+ * if we have not yet built that version.
+ */
+
+const ghToken = process.env.GITHUB_TOKEN;
+
+const getLatestVersion = async () => {
+  const req = await fetch('https://api.github.com/repos/prestodb/presto/git/refs/tags', {
+    headers: {
+      Accept: 'application/vnd.github+json',
+      'X-GitHub-Api-Version': '2022-11-28'
+    },
+    method: 'GET',
+  });
+
+  const json = await req.json();
+  const versions = json.reduce((acc, { ref }) => {
+    const version = ref.replace('refs/tags/', '');
+    if (!Number.isNaN(Number(version))) {
+      acc.push(version);
+    }
+    return acc;
+  }, []).sort((a, b) => {
+    const splitA = a.split('.').map(Number);
+    const splitB = b.split('.').map(Number);
+
+    for (let i = 0; i < splitA.length; i++) {
+        if (splitA[i] > splitB[i]) {
+          return -1;
+        }
+        if (splitA[i] < splitB[i]) {
+          return 1;
+        }
+    }
+    return 0;
+  });
+  for (const version of versions) {
+    const req = await fetch(`https://repo1.maven.org/maven2/com/facebook/presto/presto-server/${version}`);
+    if (req.ok) {
+      return version;
+    }
+  }
+  throw new Error('Could not determine latest version');
+}
+
+const imageExists = async (version) => {
+  const token = await getToken();
+  const req = await fetch(`https://ghcr.io/v2/popsql/prestodb-sandbox/manifests/${version}`, {
+    headers: {
+      Authorization: `Bearer ${ghToken}`
+    }
+  });
+  return req.ok;
+}
+
+(async () => {
+  const version = await getLatestVersion();
+  const check = await imageExists(version);
+  if (!check) {
+    const req = await fetch(
+      'https://api.github.com/repos/popsql/prestodb-sandbox/actions/workflows/build.yml/dispatches',
+      {
+        headers: {
+          Accept: 'application/vnd.github+json',
+          Authorization: `Bearer ${ghToken}`,
+          'X-GitHub-Api-Version': '2022-11-28'
+        },
+        body: JSON.stringify({
+          version,
+        }),
+      },
+    );
+    if (!req.ok) {
+      throw new Error('Could not trigger workflow');
+    }
+    console.log(`Triggered workflow for ${version}`);
+  }
+})().then(() => {
+  process.exit(0);
+}).catch((err) => {
+  console.error(err);
+  process.exit(1);
+});