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Gradle Versions Plugin

In the spirit of the Maven Versions Plugin, this plugin provides a task to determine which dependencies have updates. Additionally, the plugin checks for updates to Gradle itself.

You may also wish to explore additional functionality provided by,

Usage

JCenter gradlePluginPortal

This plugin is available from Bintray's JCenter repository and from the Gradle Plugin Portal.

You can add it to your top-level build script using the following configuration:

plugins block:

plugins {
  id "com.github.ben-manes.versions" version "$version"
}

or via the

buildscript block:

apply plugin: "com.github.ben-manes.versions"

buildscript {
  repositories {
    jcenter()
  }

  dependencies {
    classpath "com.github.ben-manes:gradle-versions-plugin:$version"
  }
}

using a Gradle init script

You can also transparently add the plugin to every Gradle project that you run via a Gradle init script, e.g. $HOME/.gradle/init.d/add-versions-plugin.gradle:

initscript {
  repositories {
     jcenter()
  }

  dependencies {
    classpath 'com.github.ben-manes:gradle-versions-plugin:+'
  }
}

allprojects {
  apply plugin: com.github.benmanes.gradle.versions.VersionsPlugin

  tasks.named("dependencyUpdates").configure {
    // configure the task, for example wrt. resolution strategies
  }
}

The current version is known to work with Gradle versions up to 5.6.

Tasks

dependencyUpdates

Displays a report of the project dependencies that are up-to-date, exceed the latest version found, have upgrades, or failed to be resolved. When a dependency cannot be resolved the exception is logged at the info level.

To refresh the cache (i.e. fetch the new releases/versions of the dependencies), use flag --refresh-dependencies.

Gradle updates are checked for on the current, release-candidate and nightly release channels. The plaintext report displays gradle updates as a separate category in breadcrumb style (excluding nightly builds). The xml and json reports include information about all three release channels, whether a release is considered an update with respect to the running (executing) gradle instance, whether an update check on a release channel has failed, as well as a reason field explaining failures or missing information. The update check may be disabled using the checkForGradleUpdate flag.

Multi-project build

In a multi-project build, running this task in the root project will generate a consolidated/merged report for dependency updates in all subprojects. Alternatively, you can run the task separately in each subproject to generate separate reports for each subproject.

Revisions

The revision task property controls the Ivy resolution strategy for determining what constitutes the latest version of a dependency. Maven's dependency metadata does not distinguish between milestone and release versions. The following strategies are natively supported by Gradle:

  • release: selects the latest release
  • milestone: select the latest version being either a milestone or a release (default)
  • integration: selects the latest revision of the dependency module (such as SNAPSHOT)

The strategy can be specified either on the task or as a system property for ad hoc usage:

gradle dependencyUpdates -Drevision=release

To further define which version to accept, you need to define what means an unstable version. Sadly, there are no agreed standard on this, but this is a good starting point:

Groovy 
def isNonStable = { String version ->
  def stableKeyword = ['RELEASE', 'FINAL', 'GA'].any { it -> version.toUpperCase().contains(it) }
  def regex = /^[0-9,.v-]+(-r)?$/
  return !stableKeyword && !(version ==~ regex)
}
Kotlin 
fun isNonStable(version: String): Boolean {
    val stableKeyword = listOf("RELEASE", "FINAL", "GA").any { version.toUpperCase().contains(it) }
    val regex = "^[0-9,.v-]+(-r)?$".toRegex()
    val isStable = stableKeyword || regex.matches(version)
    return isStable.not()
}

You can then configure Component Selection Rules. The current version of a component can be retrieved with the currentVersion property. You can either use the simplified syntax rejectVersionIf { ... } or configure a complete resolution strategy.

Groovy 
tasks.named("dependencyUpdates").configure {
  // Example 1: reject all non stable versions
  rejectVersionIf {
    isNonStable(it.candidate.version)
  }

  // Example 2: disallow release candidates as upgradable versions from stable versions
  rejectVersionIf {
    isNonStable(it.candidate.version) && !isNonStable(it.currentVersion)
  }

  // Example 3: using the full syntax
  resolutionStrategy {
    componentSelection {
      all {
        if (isNonStable(it.candidate.version) && !isNonStable(it.currentVersion)) {
          reject('Release candidate')
        }
      }
    }
  }
}
Kotlin 
import com.github.benmanes.gradle.versions.updates.DependencyUpdatesTask

tasks.named("dependencyUpdates", DependencyUpdatesTask::class.java).configure {
  // Example 1: reject all non stable versions
  rejectVersionIf {
    isNonStable(candidate.version)
  }

  // Example 2: disallow release candidates as upgradable versions from stable versions
  rejectVersionIf {
    isNonStable(candidate.version) && !isNonStable(currentVersion)
  }

  // Example 3: using the full syntax
  resolutionStrategy {
    componentSelection {
      all {
        if (isNonStable(candidate.version) && !isNonStable(currentVersion)) {
          reject("Release candidate")
        }
      }
    }
  }
}

Gradle Release Channel

The gradleReleaseChannel task property controls which release channel of the Gradle project is used to check for available Gradle updates. Options are:

  • current
  • release-candidate
  • nightly

The default is release-candidate. The value can be changed as shown below:

dependencyUpdates.gradleReleaseChannel="current"

Constraints

If you use constraints, for example to define a BOM using the java-platform plugin or to manage transitive dependency versions, you can enable checking of constraints by specifying the checkConstraints attribute of the dependencyUpdates task.

tasks.named("dependencyUpdates").configure {
    checkConstraints = true
}

Kotlin DSL

If using Gradle's kotlin-dsl, you could configure the dependencyUpdates like this:

import com.github.benmanes.gradle.versions.updates.DependencyUpdatesTask

tasks.named("dependencyUpdates", DependencyUpdatesTask::class.java).configure {

  // optional parameters
  checkForGradleUpdate = true
  outputFormatter = "json"
  outputDir = "build/dependencyUpdates"
  reportfileName = "report"
}

Note: Do use the plugins { .. } syntax if you use the Kotlin DSL.

Try out the samples

Have a look at examples/groovy and examples/kotlin

# Publish the latest version of the plugin to mavenLocal()
$ ./gradlew install

# Try out the samples
$ ./gradlew -p examples/groovy dependencyUpdate
$ ./gradlew -p examples/kotlin dependencyUpdate

Report format

The task property outputFormatter controls the report output format. The following values are supported:

  • "plain": format output file as plain text (default)
  • "json": format output file as json text
  • "xml": format output file as xml text, can be used by other plugins (e.g. sonar)
  • "html": format output file as html
  • a Closure: will be called with the result of the dependency update analysis (see example below)

You can also set multiple output formats using comma as the separator:

gradle dependencyUpdates -Drevision=release -DoutputFormatter=json,xml,html

The task property outputDir controls the output directory for the report file(s). The directory will be created if it does not exist. The default value is set to build/dependencyUpdates

gradle dependencyUpdates -Drevision=release -DoutputFormatter=json -DoutputDir=/any/path/with/permission

Last the property reportfileName sets the filename (without extension) of the generated report. It defaults to report. The extension will be set according to the used output format.

gradle dependencyUpdates -Drevision=release -DoutputFormatter=json -DreportfileName=myCustomReport

This displays a report to the console, e.g.

------------------------------------------------------------
: Project Dependency Updates (report to plain text file)
------------------------------------------------------------

The following dependencies are using the latest integration version:
 - backport-util-concurrent:backport-util-concurrent:3.1
 - backport-util-concurrent:backport-util-concurrent-java12:3.1

The following dependencies exceed the version found at the integration revision level:
 - com.google.guava:guava [99.0-SNAPSHOT <- 16.0-rc1]
     http://code.google.com/p/guava-libraries
 - com.google.guava:guava-tests [99.0-SNAPSHOT <- 16.0-rc1]
     http://code.google.com/p/guava-libraries

The following dependencies have later integration versions:
 - com.google.inject:guice [2.0 -> 3.0]
     http://code.google.com/p/google-guice/
 - com.google.inject.extensions:guice-multibindings [2.0 -> 3.0]
     http://code.google.com/p/google-guice/

Gradle updates:
 - Gradle: [4.6 -> 4.7 -> 4.8-rc-2]

Json report

{
  "current": {
    "dependencies": [
      {
        "group": "backport-util-concurrent",
        "version": "3.1",
        "name": "backport-util-concurrent",
        "projectUrl": "http://backport-jsr166.sourceforge.net/"
      },
      {
        "group": "backport-util-concurrent",
        "version": "3.1",
        "name": "backport-util-concurrent-java12",
        "projectUrl": "http://backport-jsr166.sourceforge.net/"
      }
    ],
    "count": 2
  },
  "gradle": {
    "enabled": true,
    "current": {
      "version": "4.7",
      "reason": "",
      "isUpdateAvailable": true,
      "isFailure": false
    },
    "nightly": {
      "version": "4.9-20180526235939+0000",
      "reason": "",
      "isUpdateAvailable": true,
      "isFailure": false
    },
    "releaseCandidate": {
      "version": "4.8-rc-2",
      "reason": "",
      "isUpdateAvailable": true,
      "isFailure": false
    },
    "running": {
      "version": "4.6",
      "reason": "",
      "isUpdateAvailable": false,
      "isFailure": false
    }
  },
  "exceeded": {
    "dependencies": [
      {
        "group": "com.google.guava",
        "latest": "16.0-rc1",
        "version": "99.0-SNAPSHOT",
        "name": "guava",
        "projectUrl": "http://code.google.com/p/guava-libraries"
      },
      {
        "group": "com.google.guava",
        "latest": "16.0-rc1",
        "version": "99.0-SNAPSHOT",
        "name": "guava-tests",
        "projectUrl": "http://code.google.com/p/guava-libraries"
      }
    ],
    "count": 2
  },
  "outdated": {
    "dependencies": [
      {
        "group": "com.google.inject",
        "available": {
          "release": "3.0",
          "milestone": null,
          "integration": null
        },
        "version": "2.0",
        "name": "guice",
        "projectUrl": "http://code.google.com/p/google-guice/"
      },
      {
        "group": "com.google.inject.extensions",
        "available": {
          "release": "3.0",
          "milestone": null,
          "integration": null
        },
        "version": "2.0",
        "name": "guice-multibindings",
        "projectUrl": "http://code.google.com/p/google-guice/"
      }
    ],
    "count": 2
  },
  "unresolved": {
    "dependencies": [
      {
        "group": "com.github.ben-manes",
        "version": "1.0",
        "reason": "Could not find any version that matches com.github.ben-manes:unresolvable:latest.milestone.",
        "name": "unresolvable"
      },
      {
        "group": "com.github.ben-manes",
        "version": "1.0",
        "reason": "Could not find any version that matches com.github.ben-manes:unresolvable2:latest.milestone.",
        "name": "unresolvable2"
      }
    ],
    "count": 2
  },
  "count": 8
}

XML report

<response>
  <count>8</count>
  <current>
    <count>2</count>
    <dependencies>
      <dependency>
        <name>backport-util-concurrent</name>
        <group>backport-util-concurrent</group>
        <version>3.1</version>
        <projectUrl>http://backport-jsr166.sourceforge.net/</projectUrl>
      </dependency>
      <dependency>
        <name>backport-util-concurrent-java12</name>
        <group>backport-util-concurrent</group>
        <version>3.1</version>
        <projectUrl>http://backport-jsr166.sourceforge.net/</projectUrl>
      </dependency>
    </dependencies>
  </current>
  <outdated>
    <count>2</count>
    <dependencies>
      <outdatedDependency>
        <name>guice</name>
        <group>com.google.inject</group>
        <version>2.0</version>
        <available>
          <release>3.0</release>
        </available>
        <projectUrl>http://code.google.com/p/google-guice/</projectUrl>
      </outdatedDependency>
      <outdatedDependency>
        <name>guice-multibindings</name>
        <group>com.google.inject.extensions</group>
        <version>2.0</version>
        <available>
          <release>3.0</release>
        </available>
        <projectUrl>http://code.google.com/p/guava-libraries</projectUrl>
      </outdatedDependency>
    </dependencies>
  </outdated>
  <exceeded>
    <count>2</count>
    <dependencies>
      <exceededDependency>
        <name>guava</name>
        <group>com.google.guava</group>
        <version>99.0-SNAPSHOT</version>
        <latest>16.0-rc1</latest>
        <projectUrl>http://code.google.com/p/guava-libraries</projectUrl>
      </exceededDependency>
      <exceededDependency>
        <name>guava-tests</name>
        <group>com.google.guava</group>
        <version>99.0-SNAPSHOT</version>
        <latest>16.0-rc1</latest>
        <projectUrl>http://code.google.com/p/guava-libraries</projectUrl>
      </exceededDependency>
    </dependencies>
  </exceeded>
  <unresolved>
    <count>2</count>
    <dependencies>
      <unresolvedDependency>
        <name>unresolvable</name>
        <group>com.github.ben-manes</group>
        <version>1.0</version>
        <reason>Could not find any version that matches com.github.ben-manes:unresolvable:latest.release.</reason>
      </unresolvedDependency>
      <unresolvedDependency>
        <name>unresolvable2</name>
        <group>com.github.ben-manes</group>
        <version>1.0</version>
        <reason>Could not find any version that matches com.github.ben-manes:unresolvable2:latest.release.</reason>
      </unresolvedDependency>
    </dependencies>
  </unresolved>
  <gradle>
    <enabled>true</enabled>
    <running>
      <version>4.6</version>
      <isUpdateAvailable>false</isUpdateAvailable>
      <isFailure>false</isFailure>
      <reason></reason>
    </running>
    <current>
      <version>4.7</version>
      <isUpdateAvailable>true</isUpdateAvailable>
      <isFailure>false</isFailure>
      <reason></reason>
    </current>
    <releaseCandidate>
      <version>4.8-rc-2</version>
      <isUpdateAvailable>true</isUpdateAvailable>
      <isFailure>false</isFailure>
      <reason></reason>
    </releaseCandidate>
    <nightly>
      <version>4.9-20180526235939+0000</version>
      <isUpdateAvailable>true</isUpdateAvailable>
      <isFailure>false</isFailure>
      <reason></reason>
    </nightly>
  </gradle>
</response>

HTML report

The HTML report provides sections for current, outdated, exceeded and unresolved dependencies.

Custom report format

If you need to create a report in a custom format, you can set the dependencyUpdates tasks's outputFormatter property to a Closure. The closure will be called with a single argument that is an instance of com.github.benmanes.gradle.versions.reporter.result.Result.

For example, if you wanted to create an html table for the upgradable dependencies, you could use:

...
tasks.named("dependencyUpdates").configure {
  outputFormatter = { result ->
    def updatable = result.outdated.dependencies
    if (!updatable.isEmpty()){
      def writer = new StringWriter()
      def html = new groovy.xml.MarkupBuilder(writer)

      html.html {
        body {
          table {
            thead {
              tr {
                td("Group")
                td("Module")
                td("Current version")
                td("Latest version")
              }
            }
            tbody {
              updatable.each { dependency->
                tr {
                  td(dependency.group)
                  td(dependency.name)
                  td(dependency.version)
                  td(dependency.available.release ?: dependency.available.milestone)
                }
              }
            }
          }
        }
      }
      println writer.toString()
    }
  }
}

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Gradle plugin to discover dependency updates

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