I am having a dependency conflict issue in a project I am working on. Specifically, a dependency of a dependency of a dependency depends on Jersey 1.9 for internal client purposes, while I am using Jersey 2.28 in implementing a REST interface for the high level functionality of the project. Since Jersey 1.9 is basically being used invisibly and behind the scenes inside of my dependency, I am attempting to use maven-shade-plugin to include the dependency and Jersey 1.9 and relocate Jersey to another package while I use Jersey 2.28 up front in its original package.
maven-shade-plugin creates a modified POM file with reduced dependencies for installation so dependent projects won't pull in dependencies for the jar when they are already included/shaded in the jar. However, what I am finding is that when the functional component and the web application component of the project are developed as *modules* to an aggregating/parent POM, the build process only accounts for the *original* POM of the shaded functional module with its original/pre-reduced dependencies, which makes the build of the web application module pull in the original dependencies, that should have been shaded, into its WEB-INF/lib/. The dependency management works correctly when installing the shaded functional component, and building the web application module independently. Is this a bug or by design? Is there a proper fix to apply to my POM files, or am I stuck ordering, building and installing each project independently for now? My test case and details follow. Please note that I am demonstrating the issue and left relocations and artifact includes/excludes out of the maven-shade-plugin configuration. See: # POM files [email protected] ~/src/shadetest $ cat pom.xml <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>net.gigabyteproductions.maven.shadetest</groupId> <artifactId>shadetest-parent</artifactId> <packaging>pom</packaging> <version>1.0-SNAPSHOT</version> <modules> <module>lib</module> <module>service</module> </modules> <dependencyManagement> <dependencies> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.apache.accumulo</groupId> <artifactId>accumulo-core</artifactId> <version>1.8.1</version> </dependency> </dependencies> </dependencyManagement> <build> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>3.0.0</version> </plugin> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <version>2.2</version> </plugin> </plugins> </pluginManagement> </build> </project> [email protected] ~/src/shadetest $ cat lib/pom.xml <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> <parent> <groupId>net.gigabyteproductions.maven.shadetest</groupId> <artifactId>shadetest-parent</artifactId> <version>1.0-SNAPSHOT</version> <relativePath>..</relativePath> </parent> <artifactId>shadetest-lib</artifactId> <packaging>jar</packaging> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.apache.accumulo</groupId> <artifactId>accumulo-core</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <!-- <dependencyReducedPomLocation>${project.build.directory}/dependency-reduced-pom.xml</dependencyReducedPomLocation> --> <shadedArtifactAttached>false</shadedArtifactAttached> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build> </project> [email protected] ~/src/shadetest $ cat service/pom.xml <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> <parent> <groupId>net.gigabyteproductions.maven.shadetest</groupId> <artifactId>shadetest-parent</artifactId> <version>1.0-SNAPSHOT</version> <relativePath>..</relativePath> </parent> <artifactId>shadetest-service</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>net.gigabyteproductions.maven.shadetest</groupId> <artifactId>shadetest-lib</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <dependency> <groupId>org.glassfish.jersey.containers</groupId> <artifactId>jersey-container-servlet-core</artifactId> <version>2.28</version> </dependency> <dependency> <groupId>org.glassfish.jersey.inject</groupId> <artifactId>jersey-hk2</artifactId> <version>2.28</version> </dependency> </dependencies> </project> # reactor build/install [email protected] ~/src/shadetest $ rm -rf ~/.m2/repository/net/gigabyteproductions/maven/shadetest/ [email protected] ~/src/shadetest $ mvn clean install [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Reactor Build Order: [INFO] [INFO] shadetest-parent [pom] [INFO] shadetest-lib [jar] [INFO] shadetest-service [war] . . . [INFO] --- maven-shade-plugin:3.0.0:shade (default) @ shadetest-lib --- [INFO] Including org.apache.accumulo:accumulo-core:jar:1.8.1 in the shaded jar. . . . [INFO] Including com.sun.jersey:jersey-core:jar:1.9 in the shaded jar. [INFO] Including com.sun.jersey:jersey-client:jar:1.9 in the shaded jar. . . . [INFO] Replacing original artifact with shaded artifact. [INFO] Replacing /home/kmarek/src/shadetest/lib/target/shadetest-lib-1.0-SNAPSHOT.jar with /home/kmarek/src/shadetest/lib/target/shadetest-lib-1.0-SNAPSHOT-shaded.jar [INFO] Dependency-reduced POM written at: /home/kmarek/src/shadetest/lib/dependency-reduced-pom.xml [INFO] [INFO] --- maven-install-plugin:2.4:install (default-install) @ shadetest-lib --- [INFO] Installing /home/kmarek/src/shadetest/lib/target/shadetest-lib-1.0-SNAPSHOT.jar to /home/kmarek/.m2/repository/net/gigabyteproductions/maven/shadetest/shadetest-lib/1.0-SNAPSHOT/shadetest-lib-1.0-SNAPSHOT.jar [INFO] Installing /home/kmarek/src/shadetest/lib/dependency-reduced-pom.xml to /home/kmarek/.m2/repository/net/gigabyteproductions/maven/shadetest/shadetest-lib/1.0-SNAPSHOT/shadetest-lib-1.0-SNAPSHOT.pom . . . [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary: [INFO] [INFO] shadetest-parent 1.0-SNAPSHOT ...................... SUCCESS [ 0.264 s] [INFO] shadetest-lib ...................................... SUCCESS [ 5.587 s] [INFO] shadetest-service 1.0-SNAPSHOT ..................... SUCCESS [ 5.087 s] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 11.045 s [INFO] Finished at: 2019-03-16T00:44:39-04:00 [INFO] ------------------------------------------------------------------------ # Notice the original Accumulo and Jersey dependencies of the lib module were # pulled into the service module, in addition to the shaded lib module # artifact [email protected] ~/src/shadetest $ ls -1 service/target/shadetest-service-1.0-SNAPSHOT/WEB-INF/lib/ accumulo-core-1.8.1.jar accumulo-fate-1.8.1.jar accumulo-start-1.8.1.jar activation-1.1.jar aopalliance-repackaged-2.5.0.jar apacheds-i18n-2.0.0-M15.jar apacheds-kerberos-codec-2.0.0-M15.jar api-asn1-api-1.0.0-M20.jar api-util-1.0.0-M20.jar avro-1.7.4.jar commons-beanutils-1.7.0.jar commons-beanutils-core-1.8.0.jar commons-cli-1.2.jar commons-codec-1.4.jar commons-collections-3.2.2.jar commons-compress-1.4.1.jar commons-configuration-1.6.jar commons-digester-1.8.jar commons-httpclient-3.1.jar commons-io-2.4.jar commons-lang-2.4.jar commons-logging-1.1.1.jar commons-math3-3.6.1.jar commons-net-3.1.jar commons-vfs2-2.1.jar curator-client-2.6.0.jar curator-framework-2.6.0.jar curator-recipes-2.6.0.jar gson-2.2.4.jar guava-14.0.1.jar hadoop-annotations-2.6.4.jar hadoop-auth-2.6.4.jar hadoop-client-2.6.4.jar hadoop-common-2.6.4.jar hadoop-hdfs-2.6.4.jar hadoop-mapreduce-client-app-2.6.4.jar hadoop-mapreduce-client-common-2.6.4.jar hadoop-mapreduce-client-core-2.6.4.jar hadoop-mapreduce-client-jobclient-2.6.4.jar hadoop-mapreduce-client-shuffle-2.6.4.jar hadoop-yarn-api-2.6.4.jar hadoop-yarn-client-2.6.4.jar hadoop-yarn-common-2.6.4.jar hadoop-yarn-server-common-2.6.4.jar hk2-api-2.5.0.jar hk2-locator-2.5.0.jar hk2-utils-2.5.0.jar htrace-core-3.0.4.jar htrace-core-3.1.0-incubating.jar httpclient-4.2.5.jar httpcore-4.2.4.jar jackson-core-asl-1.9.13.jar jackson-jaxrs-1.9.13.jar jackson-mapper-asl-1.9.13.jar jackson-xc-1.9.13.jar jakarta.annotation-api-1.3.4.jar jakarta.inject-2.5.0.jar jakarta.ws.rs-api-2.1.5.jar javassist-3.22.0-CR2.jar jaxb-api-2.2.2.jar jcommander-1.48.jar jersey-client-1.9.jar jersey-client-2.28.jar jersey-common-2.28.jar jersey-container-servlet-core-2.28.jar jersey-core-1.9.jar jersey-hk2-2.28.jar jersey-media-jaxb-2.28.jar jersey-server-2.28.jar jetty-util-6.1.26.jar jline-2.11.jar jsr305-1.3.9.jar leveldbjni-all-1.8.jar libthrift-0.9.3.jar log4j-1.2.17.jar netty-3.7.0.Final.jar osgi-resource-locator-1.0.1.jar paranamer-2.3.jar protobuf-java-2.5.0.jar shadetest-lib-1.0-SNAPSHOT.jar slf4j-api-1.7.21.jar slf4j-log4j12-1.6.1.jar snappy-java-1.0.4.1.jar stax-api-1.0-2.jar validation-api-2.0.1.Final.jar xercesImpl-2.9.1.jar xml-apis-1.3.04.jar xmlenc-0.52.jar xz-1.0.jar zookeeper-3.4.6.jar # Independent build of the service module [email protected] ~/src/shadetest $ cd service [email protected] ~/src/shadetest/service $ mvn clean install . . . [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 3.662 s [INFO] Finished at: 2019-03-16T00:45:04-04:00 [INFO] ------------------------------------------------------------------------ # Notice the dependencies are reduced to its own dependencies and the shaded # lib module artifact [email protected] ~/src/shadetest/service $ ls -1 target/shadetest-service-1.0-SNAPSHOT/WEB-INF/lib/ aopalliance-repackaged-2.5.0.jar hk2-api-2.5.0.jar hk2-locator-2.5.0.jar hk2-utils-2.5.0.jar jakarta.annotation-api-1.3.4.jar jakarta.inject-2.5.0.jar jakarta.ws.rs-api-2.1.5.jar javassist-3.22.0-CR2.jar jersey-client-2.28.jar jersey-common-2.28.jar jersey-container-servlet-core-2.28.jar jersey-hk2-2.28.jar jersey-media-jaxb-2.28.jar jersey-server-2.28.jar osgi-resource-locator-1.0.1.jar shadetest-lib-1.0-SNAPSHOT.jar validation-api-2.0.1.Final.jar
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