Create a jar with external dependencies using Gradle - gradle

Question

I have added following in my build.gradle file.
jar {
doFirst {
into('lib') {
from configurations.runtime
}
}}
When I run "gradle build" it creates a JAR file containing all the dependent JARs. But, then it puts that JAR into a ZIP file containing the dependent jars in lib folder again. This ZIP file structure looks like this:
-- 4.11-SNAPSHOT.jar
---- lib
----- lib/dependent1.jar
----- lib/dependent2.jar
-- lib
---- dependent1.jar
---- dependent2.jar
I don't want the ZIP to be generated. I only want the single JAR containing all the dependencies to get generated.
-- 4.11-SNAPSHOT.jar
---- lib
----- lib/dependent1.jar
----- lib/dependent2.jar
Complete build.gradle is below:
repositories {
maven {
url 'https://repository.cloudera.com/content/repositories/releases/'
}
maven {
url 'https://repository.cloudera.com/content/repositories/third-party/'
}
}
configurations.all {
// check for updates every build
resolutionStrategy.cacheChangingModulesFor 0, 'seconds'
}
dependencies {
compile group: 'commons-collections', name: 'commons-collections', version: '3.2'
compile group: 'com.company.projectname', name: 'domain', version: pppVersion
compile group: 'com.company.projectname', name: 'model', version: modelVersion
compile group: 'com.company.projectname', name: 'pipeline-util', version: pppVersion
compile group: 'com.cloudera.crunch', name: 'crunch', version: '0.3.0-3-cdh-5.2.1'
compile group: 'org.apache.hadoop', name: 'hadoop-common', version: '2.5.0-cdh5.3.3'
compile group: 'org.apache.hadoop', name: 'hadoop-mapreduce-client-common', version: '2.5.0-cdh5.3.3'
compile group: 'ch.hsr', name: 'geohash', version: '1.3.0'
testCompile group: 'junit', name: 'junit', version: '4.+'
}
jar {
manifest {
attributes 'Main-Class': 'com.company.projectname.delta.DeltaClusterer'
}
classifier 'job'
doFirst {
into('lib') {
from configurations.runtime
}
}
}
There is a parent build.gradle as well. And it is as follows:
/**
* Dependencies for build script plugins. Project dependencies should
* be added further in this file.
*/
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.netflix.nebula:gradle-ospackage-plugin:2.2.0'
classpath 'org.hidetake:gradle-ssh-plugin:1.0.4'
classpath 'be.xvrt:release-plugin:0.5.1'
}
}
task wrapper( type: Wrapper ) {
gradleVersion = '2.2'
}
// Release script for automated version management.
// Apply at root so it uses/updates the root gradle.properties file.
apply plugin: 'be.xvrt.release'
subprojects {
apply plugin: 'java' // Support for Java.
apply plugin: 'maven-publish' // Upload artifacts to Nexus.
apply plugin: 'be.xvrt.release' // Release script for automated version management.
apply plugin: 'org.hidetake.ssh' // Execute SSH commands.
apply plugin: 'rpm' // Builds RPM artifacts.
apply plugin: 'sonar-runner' // Creates Sonar reports.
apply plugin: 'project-report' // Creates a dependency report, very useful for finding dependency conflicts.
/**
* Global configuration.
*/
sourceCompatibility = 1.6
targetCompatibility = 1.6
compileJava.options.encoding = 'UTF-8'
compileTestJava.options.encoding = 'UTF-8'
/**
* Global dependency settings for all projects. Per project dependencies
* should be added to the build.gradle file in every project.
*/
// Common dependencies for all projects.
dependencies {
// Also see resolutionStrategy below when modifying semantic-TTOM-ddct version!
compile group: 'com.teleatlas.models', name: 'semantic-TTOM-ddct', version: '4.0.2.0'
compile group: 'com.google.guava', name: 'guava', version: '15.0'
compile group: 'commons-collections', name: 'commons-collections', version: '3.2.1'
compile group: 'commons-lang', name: 'commons-lang', version: '2.6'
compile group: 'commons-io', name: 'commons-io', version: '2.4'
compile group: 'args4j', name: 'args4j', version: '2.0.29'
compile group: 'log4j', name: 'log4j', version: '1.2.17'
testCompile group: 'junit', name: 'junit', version: '4.12'
testCompile group: 'org.mockito', name: 'mockito-core', version: '1.10.8'
}
// The install artifact is only required for command line applications.
if ( !tasks.findByPath( 'war' ) ) {
task buildInstallZip( type: Zip ) {
from jar.outputs.files
// Copy all dependencies into lib.
into( 'lib' ) {
from configurations.runtime.allArtifacts.files
from configurations.runtime
}
}
}
/**
* Publish to Nexus.
*/
artifacts {
archives buildSourcesJar
archives buildJavadocJar
if ( !tasks.findByPath( 'war' ) ) {
archives buildInstallZip
}
}
publishing {
publications {
maven( MavenPublication ) {
if ( tasks.findByPath( 'war' ) ) {
from components.web
}
else {
from components.java
}
artifact buildSourcesJar {
classifier 'sources'
}
artifact buildJavadocJar {
classifier 'javadoc'
}
if ( !tasks.findByPath( 'war' ) ) {
artifact buildInstallZip {
classifier 'install'
}
}
}
}
}
}
/**
* Build RPM artifacts for command line applications.
*/
configure( [project( ':project1' ),
project( ':project2' ),
project( ':project3' )] ) {
task rpm( type: Rpm, dependsOn: 'jar' ) {
if ( version.contains( 'SNAPSHOT' ) ) {
logger.info( 'Building SNAPSHOT RPM.' )
version project.version.replace( '-SNAPSHOT', ".${System.currentTimeMillis()}" )
}
else {
logger.info( 'Building RELEASE RPM.' )
version project.version
release '1'
}
vendor 'company'
packageGroup 'company'
permissionGroup "Applications/${project.name}"
arch NOARCH
os LINUX
into '/usr/share/java/'
from( jar.outputs.files ) {
into project.name
}
from( configurations.runtime ) {
into "${project.name}/lib"
}
}
// When publishing artifacts, the rpm is also published (and created).
publish.dependsOn publishRpm
publishRpm.dependsOn rpm
}
What needs to be done for this?

Answer 1

I'm guessing the problem is the buildInstallZip task you have defined in the parent build.gradle file. It looks like that task is duplicating the functionality yo're now adding to the jar task in the subproject.
Did you write the parent build file, or was that provided by someone else? Maybe 2 people are both trying to solve the same problem in 2 different ways?
Anyway, to solve, either disable the buildInstallZip task in that subproject, or remove your modifications from the jar task and instead use the zip produced by buildInstallZip as you application distribution.