Add GitHub Action to release extensions to Maven Central

Author: fmbenhassine

.github/extension-release-files-spec.json

@@ -0,0 +1,18 @@
+{
+  "files": [
+    {
+      "aql": {
+        "items.find": {
+          "$and": [
+            {
+              "@build.name": "${buildname}",
+              "@build.number": "${buildnumber}",
+              "path": { "$match": "org/springframework/batch/extensions/spring-batch-*" }
+            }
+          ]
+        }
+      },
+      "target": "nexus/"
+    }
+  ]
+}

.github/workflows/extension-release.yml

@@ -0,0 +1,32 @@
+name: Maven Central Extension Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      buildName:
+        description: "Artifactory build name"
+        required: true
+      buildNumber:
+        description: "Artifactory build number"
+        required: true
+
+jobs:
+
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4.2.2
+      - name: Set Up JFrog CLI
+        uses: jfrog/setup-jfrog-cli@9fe0f98bd45b19e6e931d457f4e98f8f84461fb5 # v4.4.1
+        env:
+          JF_ENV_SPRING: ${{ secrets.JF_ARTIFACTORY_SPRING }}
+      - name: Download Release Artifacts
+        shell: bash
+        run: jf rt download --spec .github/extension-release-files-spec.json --spec-vars 'buildname=${{ github.event.inputs.buildName }};buildnumber=${{ github.event.inputs.buildNumber }}'
+      - name: Sync to Maven Central
+        uses: spring-io/central-publish-action@0cdd90d12e6876341e82860d951e1bcddc1e51b6 # v0.2.0
+        with:
+          token-name: ${{ secrets.CENTRAL_TOKEN_USERNAME }}
+          token: ${{ secrets.CENTRAL_TOKEN_PASSWORD }}
+          timeout: 120m