Gradle Dependency Checker Plugin

A Gradle plugin to assist in validating project dependencies.

Install

Build script snippet for use in all Gradle versions:

buildscript {
  repositories {
    maven {
      url "https://plugins.gradle.org/m2/"
    }
  }
  dependencies {
    classpath "gradle.plugin.com.stehno.gradle:dependency-checker:0.2.1"
  }
}

apply plugin: "com.stehno.gradle.dependency-checker"

Build script snippet for new, incubating, plugin mechanism introduced in Gradle 2.1:

plugins {
  id "com.stehno.gradle.dependency-checker" version "0.2.1"
}

Tasks

CheckDependencies

A Task used to validate that the build has no duplicate dependencies - a dependency with the same group and name, but with a different version. The build will be failed if any duplications are found.

Configuration

Without any configuration changes, the checkDependencies task will check all available configurations for duplicate dependencies and fail the build if it finds any. It will also report all duplicated dependencies in the standard output.

You can limit the scope of the dependency checking to a list of specified configurations using the task configuration, as follows:

checkDependencies {
    configurations = ['compile','runtime']
}

The above code snippet, when added to your build.gradle will limit the dependency checking to the compile and runtime configurations, all others will be ignored.

You can easily make your build automatically check the dependencies by adding one or both of the following lines to your build.gradle file:

tasks.check.dependsOn checkDependencies

tasks.build.dependsOn checkDependencies

This will make check and build dependent on the checkDependencies task so that it will always be run. This is the safest way to integrate this plugin into your build, since generally it will be forgotten and not run so that duplication will creep back into your build.

CheckAvailability

Task which will validate your dependencies (deep search) against a specified collection of remote repositories to ensure that they are all available at those repositories. This is useful in the scenario where your company has its own internal artifact repositiory and you need to determine whether or not any need to be added to support your project.

Configuration

The following configuration properties are available:

configurations

Used to specify a collection of build configuration names to search for dependencies. If no list is provided, all configurations are searched.

repoUrls

Provides a collection of URL strings for your remote artifact repositories. These repositories must use standard maven directory layout. If no repos are provided, the task will silently pass. This property may also be provided on the command line so that the value need not be coded into the build file itself.

./gradlew checkAvailability -PrepoUrls=http://artifacts.mycompany.com/repository

ignored

You may provide a list of ignored artifact coordinates - these will not be checked against the remote repositories.

failOnMissing

By default, unavailable dependencies will be listed in the build output; however, if it is desirable to fail the build when artifacts are unavailable, this may be done by setting failOnMissing = true. The dependencies will be checked and a list of all failures will be provided before the build is failed.