Use actions cache for JAR and AOT instead of committing to git

- build-generator.yml: save JAR+AOT to actions/cache, run weekly (Monday 06:00 UTC)
- deploy.yml: restore from cache, fallback to building from source on cache miss
- deploy.yml: trigger on workflow_run from Build Generator JAR
- Remove generate.jar and generate.aot from git tracking
- .gitignore: ignore both generate.jar and generate.aot

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: brunoborges

.github/workflows/build-generator.yml

@@ -6,10 +6,13 @@ on:
     paths:
       - '.github/workflows/build-generator.yml'
       - 'html-generators/generate.java'
+  schedule:
+    - cron: '0 6 * * 1'   # every Monday at 06:00 UTC
   workflow_dispatch:
 
 permissions:
-  contents: write
+  contents: read
+  actions: write
 
 jobs:
   build:
@@ -30,18 +33,10 @@ jobs:
       - name: Build AOT cache
         run: java -XX:AOTCacheOutput=html-generators/generate.aot -jar html-generators/generate.jar
 
-      - name: Commit updated JAR and AOT cache
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-          git add html-generators/generate.jar html-generators/generate.aot
-          if git diff --cached --quiet; then
-            echo "No changes to generate.jar or generate.aot"
-          else
-            git commit -m "Rebuild generate.jar and generate.aot from generate.java
-
-          Auto-generated by build-generator workflow.
-
-          Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>"
-            git push
-          fi
+      - name: Cache JAR and AOT
+        uses: actions/cache/save@v4
+        with:
+          path: |
+            html-generators/generate.jar
+            html-generators/generate.aot
+          key: generator-${{ hashFiles('html-generators/generate.java') }}

.github/workflows/deploy.yml

@@ -6,9 +6,11 @@ on:
     paths:
       - 'content/**/*.json'
       - 'templates/**'
-      - 'html-generators/generate.jar'
-      - 'html-generators/generate.aot'
       - 'site/**'
+  workflow_run:
+    workflows: ['Build Generator JAR']
+    types: [completed]
+    branches: [main]
   workflow_dispatch:
 
 permissions:
@@ -23,6 +25,7 @@ concurrency:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: ${{ github.event_name != 'workflow_run' || github.event.workflow_run.conclusion == 'success' }}
     steps:
       - uses: actions/checkout@v4
 
@@ -31,6 +34,22 @@ jobs:
           distribution: 'temurin'
           java-version: '25'
 
+      - name: Restore cached JAR and AOT
+        id: cache-restore
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            html-generators/generate.jar
+            html-generators/generate.aot
+          key: generator-${{ hashFiles('html-generators/generate.java') }}
+
+      - name: Build JAR if cache miss
+        if: steps.cache-restore.outputs.cache-hit != 'true'
+        run: |
+          echo "Cache miss — building JAR from source"
+          curl -Ls https://sh.jbang.dev | bash -s - export fatjar --force --output html-generators/generate.jar html-generators/generate.java
+          java -XX:AOTCacheOutput=html-generators/generate.aot -jar html-generators/generate.jar
+
       - name: Generate HTML pages and snippets.json
         run: java -XX:AOTCache=html-generators/generate.aot -jar html-generators/generate.jar
 

.gitignore

@@ -17,5 +17,7 @@ site/data/snippets.json
 site/index.html
 
 # Platform-specific CDS/AOT intermediate files (generated by build-cds.sh)
+html-generators/generate.aot
+html-generators/generate.jar
 html-generators/generate.jsa
 html-generators/generate.classlist