Add Convention Develocity Maven extension

.github/dependabot.yml

@@ -51,6 +51,11 @@ updates:
       time: "02:00"
     ignore:
       - dependency-name: "com.gradle:build-scan-plugin"
+  - package-ecosystem: "maven"
+    directory: "convention-develocity-maven-extension/extension"
+    schedule:
+      interval: "daily"
+      time: "02:00"
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:

.github/workflows/convention-develocity-maven-extension-verification.yml

@@ -0,0 +1,70 @@
+name: Verify Convention Develocity Maven Extension
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: Build Convention Develocity Maven Extension
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up JDK 8
+        uses: actions/setup-java@v4
+        with:
+          java-version: '8'
+          distribution: 'temurin'
+          cache: maven
+      - name: Build with Maven
+        working-directory: convention-develocity-maven-extension/extension
+        run: ./mvnw clean install
+      - name: Upload extension
+        uses: actions/upload-artifact@v4
+        with:
+          name: convention-develocity-maven-extension
+          path: ~/.m2/repository/com/myorg
+
+  verification:
+    name: Verify Example Build for Maven ${{ matrix.versions.version }}
+    needs: [build]
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        versions:
+          - sample: '3'
+            version: '3.6.3'
+          - sample: '3'
+            version: '3.8.8'
+          - sample: '3'
+            version: '(Current)'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up JDK 8
+        uses: actions/setup-java@v4
+        with:
+          java-version: '8'
+          distribution: 'temurin'
+          cache: maven
+      - name: Download extension
+        uses: actions/download-artifact@v4
+        with:
+          name: convention-develocity-maven-extension
+          path: ~/.m2/repository/com/myorg
+      - name: Set Maven version
+        if: ${{ matrix.versions.version != '(Current)' }}
+        working-directory: convention-develocity-maven-extension/examples/maven_${{ matrix.versions.sample }}
+        run: ./mvnw wrapper:wrapper -Dmaven=${{ matrix.versions.version }} -Dgradle.enterprise.url=https://ge.solutions-team.gradle.com
+        env:
+          DEVELOCITY_ACCESS_KEY: ${{ secrets.GE_SOLUTIONS_ACCESS_TOKEN }}
+      - name: Verify example build
+        working-directory: convention-develocity-maven-extension/examples/maven_${{ matrix.versions.sample }}
+        run: ./mvnw clean verify -Ddevelocity.url=https://ge.solutions-team.gradle.com
+        env:
+          DEVELOCITY_ACCESS_KEY: ${{ secrets.GE_SOLUTIONS_ACCESS_TOKEN }}

convention-develocity-maven-extension/.gitignore

@@ -0,0 +1,3 @@
+target/
+dependency-reduced-pom.xml
+**/.mvn/.develocity/develocity-workspace-id

convention-develocity-maven-extension/README.md

@@ -0,0 +1,36 @@
+## Convention Develocity Maven Extension
+
+This project demonstrates how a convention extension can share the same Develocity build configuration across multiple projects. It
+is intended to serve as a starting point for creating your own Maven extension that applies your specific Develocity configuration. Note
+the inline comments in the build and source code for things to adjust specifically to your needs.
+
+### Content
+
+This project is structured as follows:
+
+* `extension` - Contains the convention extension
+* `examples` - Contains example builds that apply the convention extension for different Maven versions
+  * `maven_3` - Applies the convention extension on a Maven 3 build (the Develocity and CCUD plugins are applied)
+
+### Running the example builds
+
+Before running the example build, install the convention extension to your local Maven repository.
+
+```bash
+cd extension
+./mvnw clean install
+```
+
+Once you have installed the extension, you can run the example build under `examples`:
+
+```bash
+cd examples/maven_3
+./mvnw clean verify
+```
+
+Note that you would publish your convention extension to your internal artifact provider, e.g., Artifactory or Nexus, for production usage.
+The artifact provider must be configured as a [Mirror](https://maven.apache.org/guides/mini/guide-mirror-settings.html) to Maven Central in order to correctly resolve the extension.
+
+#### Requirements
+
+To run the example builds, use Java 8 or higher.

convention-develocity-maven-extension/examples/maven_3/.mvn/extensions.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<extensions>
+    <extension>
+        <groupId>com.myorg</groupId>
+        <artifactId>convention-develocity-maven-extension</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </extension>
+</extensions>

convention-develocity-maven-extension/examples/maven_3/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.6/apache-maven-3.9.6-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar