[MJAR-292] - Detect MRJAR and add Multi-Release manifest entry

src/it/MJAR-292-detect-mjar-no-versions/invoker.properties

@@ -0,0 +1,20 @@
+# 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
+#
+#   http://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.
+invoker.java.version = 10+
+
+invoker.name = MJAR-292 Missing versions for MRJAR
+invoker.description = Checks the Multi-Release attribute is missing

src/it/MJAR-292-detect-mjar-no-versions/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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
+
+  http://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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>mjar-292-detect-multi-release-jar</artifactId>
+  <name>mjar-292-detect-multi-release-jar</name>
+  <description>Verifies that the multi-release jar contains the manifest entry</description>
+  <packaging>jar</packaging>
+  <version>1.0-SNAPSHOT</version>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <project.build.outputTimestamp>2022-12-22T13:25:58Z</project.build.outputTimestamp>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>@project.version@</version>
+        <configuration>
+          <archive>
+            <manifest>
+              <mainClass>myproject.HelloWorld</mainClass>
+            </manifest>
+          </archive>
+        </configuration>
+      </plugin>
+    </plugins>
+
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.10.1</version>
+          <configuration>
+            <release>8</release>
+          </configuration>
+          <executions>
+            <execution>
+              <id>java9</id>
+              <goals>
+                <goal>compile</goal>
+              </goals>
+              <configuration>
+                <release>9</release>
+                <compileSourceRoots>
+                  <compileSourceRoot>${project.basedir}/src/main/java9</compileSourceRoot>
+                </compileSourceRoots>
+                <multiReleaseOutput>true</multiReleaseOutput>
+              </configuration>
+            </execution>
+            <execution>
+              <id>java10</id>
+              <goals>
+                <goal>compile</goal>
+              </goals>
+              <configuration>
+                <release>10</release>
+                <compileSourceRoots>
+                  <compileSourceRoot>${project.basedir}/src/main/java10</compileSourceRoot>
+                </compileSourceRoots>
+                <multiReleaseOutput>true</multiReleaseOutput>
+              </configuration>
+            </execution>
+          </executions>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
+</project>

src/it/MJAR-292-detect-mjar-no-versions/src/main/java/myproject/HelloWorld.java

@@ -0,0 +1,37 @@
+package myproject;
+
+/*
+ * 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
+ *
+ *  http://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.
+ */
+
+/**
+ * The classic Hello World App.
+ */
+public class HelloWorld
+{
+
+    /**
+     * Main method.
+     *
+     * @param args Not used
+     */
+    public static void main( String[] args )
+    {
+        System.out.println( new Utils().getJavaVersion() );
+    }
+}

src/it/MJAR-292-detect-mjar-no-versions/src/main/java/myproject/Utils.java

@@ -0,0 +1,32 @@
+package myproject;
+
+/*
+ * 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
+ *
+ *  http://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.
+ */
+
+/**
+ * The classic Utils class.
+ */
+public class Utils
+{
+    public String getJavaVersion()
+    {
+        System.out.println("Running Java 8 (base) version");
+        return System.getProperty( "java.specification.version" );
+    }
+}

src/it/MJAR-292-detect-mjar-no-versions/verify.groovy

@@ -0,0 +1,26 @@
+/*
+ * 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
+ *
+ *   http://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.
+ */
+
+import java.util.jar.*;
+
+def mrjar = new JarFile(new File(basedir,'target/mjar-292-detect-multi-release-jar-1.0-SNAPSHOT.jar'))
+def manifest = mrjar.manifest.mainAttributes
+
+assert manifest.getValue( Attributes.Name.MAIN_CLASS ) == "myproject.HelloWorld"
+assert manifest.getValue( Attributes.Name.MULTI_RELEASE ) == null

src/it/MJAR-292-detect-mjar/invoker.properties

@@ -0,0 +1,20 @@
+# 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
+#
+#   http://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.
+invoker.java.version = 10+
+
+invoker.name = MJAR-292 Detect MRJAR
+invoker.description = Checks the Multi-Release attribute is true

src/it/MJAR-292-detect-mjar/pom.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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
+
+  http://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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.maven.plugins</groupId>
+  <artifactId>mjar-292-detect-multi-release-jar</artifactId>
+  <name>mjar-292-detect-multi-release-jar</name>
+  <description>Verifies that the multi-release jar contains the manifest entry</description>
+  <packaging>jar</packaging>
+  <version>1.0-SNAPSHOT</version>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <project.build.outputTimestamp>2022-12-22T13:25:58Z</project.build.outputTimestamp>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>@project.version@</version>
+        <configuration>
+          <archive>
+            <manifest>
+              <mainClass>myproject.HelloWorld</mainClass>
+              <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
+            </manifest>
+            <manifestEntries>
+              <!--
+                We override this config since we are detecting the versioned area,
+                The output JAR should contain `Multi-Release: true`
+               -->
+              <Multi-Release>false</Multi-Release>
+            </manifestEntries>
+          </archive>
+        </configuration>
+      </plugin>
+    </plugins>
+
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.10.1</version>
+          <configuration>
+            <release>8</release>
+          </configuration>
+          <executions>
+            <execution>
+              <id>java9</id>
+              <goals>
+                <goal>compile</goal>
+              </goals>
+              <configuration>
+                <release>9</release>
+                <compileSourceRoots>
+                  <compileSourceRoot>${project.basedir}/src/main/java9</compileSourceRoot>
+                </compileSourceRoots>
+                <multiReleaseOutput>true</multiReleaseOutput>
+              </configuration>
+            </execution>
+            <execution>
+              <id>java10</id>
+              <goals>
+                <goal>compile</goal>
+              </goals>
+              <configuration>
+                <release>10</release>
+                <compileSourceRoots>
+                  <compileSourceRoot>${project.basedir}/src/main/java10</compileSourceRoot>
+                </compileSourceRoots>
+                <multiReleaseOutput>true</multiReleaseOutput>
+              </configuration>
+            </execution>
+          </executions>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
+</project>

src/it/MJAR-292-detect-mjar/src/main/java/myproject/HelloWorld.java

@@ -0,0 +1,37 @@
+package myproject;
+
+/*
+ * 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
+ *
+ *  http://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.
+ */
+
+/**
+ * The classic Hello World App.
+ */
+public class HelloWorld
+{
+
+    /**
+     * Main method.
+     *
+     * @param args Not used
+     */
+    public static void main( String[] args )
+    {
+        System.out.println( new Utils().getJavaVersion() );
+    }
+}