Use Github Actions to build and deploy snapshots #287

.github/settings.xml

@@ -0,0 +1,12 @@
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+		  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
+
+	<servers>
+		<server>
+			<id>sonatype</id>
+			<username>${env.SONATYPE_USER}</username>
+			<password>${env.SONATYPE_PASSWORD}</password>
+		</server>
+	</servers>
+</settings>

.github/workflows/maven.yml

@@ -0,0 +1,66 @@
+name: Java CI with Maven
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java: [ 8, 11, 17 ]
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: Set up JDK ${{ matrix.java }}
+      uses: actions/setup-java@v2
+      with:
+        java-version: ${{ matrix.java }}
+        distribution: temurin
+
+    - name: Cache local Maven repository
+      uses: actions/cache@v2
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-maven-
+
+    - name: Build with Maven
+      run: mvn -B package --file pom.xml
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: [ build ]
+    steps:
+
+    - uses: actions/checkout@v2
+
+    - name: Set up JDK 8
+      uses: actions/setup-java@v2
+      with:
+        java-version: 8
+        distribution: temurin
+
+    - name: Cache local Maven repository
+      uses: actions/cache@v2
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ runner.os }}-maven-
+
+    - name: Deploy with Maven to SONATYPE OSS Snapshot if secrets are set
+      env:
+        SONATYPE_USER: ${{ secrets.SONATYPE_USER }}
+        SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
+      run: |
+        if [ "${SONATYPE_USER}" != "" -a "${SONATYPE_PASSWORD}" != "" ]; then
+          mvn -B deploy -P sonatype-oss-snapshot -s .github/settings.xml
+        else
+          echo "Not deploying, secrets SONATYPE_USER and SONATYPE_PASSWORD not provided"
+        fi

pom.xml

@@ -509,6 +509,15 @@
     </reporting>
 
     <profiles>
+        <profile>
+            <id>sonatype-oss-snapshot</id>
+            <distributionManagement>
+                <snapshotRepository>
+                    <id>sonatype</id>
+                    <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+                </snapshotRepository>
+            </distributionManagement>
+        </profile>
         <profile>
             <id>sonatype-oss-release</id>
             <build>