Merge pull request #678 from usethesource/log4j-shading-fix

Fixed shading of log4j2 packages

Author: rodinaarssen

rascal-lsp/pom.xml

@@ -230,6 +230,13 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-shade-plugin</artifactId>
         <version>3.6.0</version>
+        <dependencies>
+          <dependency> <!-- correctly shade multiple log4j2 depencneis -->
+              <groupId>org.apache.logging.log4j</groupId>
+              <artifactId>log4j-transform-maven-shade-plugin-extensions</artifactId>
+              <version>0.2.0</version>
+          </dependency>
+        </dependencies>
         <executions>
           <execution>
             <phase>package</phase>
@@ -238,9 +245,12 @@
             </goals>
             <configuration>
               <transformers>
+                <transformer implementation="org.apache.logging.log4j.maven.plugins.shade.transformer.Log4j2PluginCacheFileTransformer"/>
+                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                 <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                   <manifestEntries>
                     <Name>rascal-lsp</Name>
+                    <Multi-Release>true</Multi-Release>
                     <Main-Class>org.rascalmpl.vscode.lsp.RascalLanguageServer</Main-Class>
                     <Specification-Version>${project.version}</Specification-Version>
                     <Specification-Vendor>http://www.usethesource.io</Specification-Vendor>