[jboss-jira] [JBoss JIRA] (DROOLS-2839) Document how to run Drools with a flat classpath by merging kie.conf files

Document how to run Drools with a flat classpath by merging kie.conf files -------------------------------------------------------------------------- Key: DROOLS-2839 URL: https://issues.jboss.org/browse/DROOLS-2839 Project: Drools Issue Type: Task Components: docs Affects Versions: 7.9.0.Final Reporter: Duncan Doyle Assignee: Mario Fusco Priority: Major When running Drools in a Fat JAR, for example created by the Maven Shade Plugin, the various "kie.conf" files of the Drools JARs (e.g. drools-core, drools-compiler) need to be merged, otherwise , the Fat JAR will contain only 1 kie.conf from a single dependency, resulting into errors. This is for example required when running Drools in a Vert.x application. You can merge resources in the Maven Shade Plugin using transformers, like this: {code} <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"> <resource>META-INF/kie.conf</resource> </transformer> {code} For example, in my Vert.x app this is the full config of the Maven Shade Plugin: {code} <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>3.1.0</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <manifestEntries> <Main-Class>io.vertx.core.Launcher</Main-Class> <Main-Verticle>${main.verticle}</Main-Verticle> </manifestEntries> </transformer> <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"> <resource>META-INF/services/io.vertx.core.spi.VerticleFactory</resource> </transformer> <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"> <resource>META-INF/kie.conf</resource> </transformer> </transformers> <artifactSet> </artifactSet> <outputFile>${project.build.directory}/${project.artifactId}-${project.version}-fat.jar</outputFile> </configuration> </execution> </executions> </plugin> {code}