mirror of
https://github.com/gradle/actions
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428 lines
19 KiB
Markdown
428 lines
19 KiB
Markdown
# The `dependency-submission` action
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The `gradle/actions/dependency-submission` action provides the simplest (and recommended) way to generate a
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dependency graph for your project. This action will attempt to detect all dependencies used by your build
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without building and testing the project itself.
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The dependency graph snapshot is generated via integration with the [GitHub Dependency Graph Gradle Plugin](https://plugins.gradle.org/plugin/org.gradle.github-dependency-graph-gradle-plugin), and submitted to your repository via the
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[GitHub Dependency Submission API](https://docs.github.com/en/rest/dependency-graph/dependency-submission).
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The generated snapshot files can be submitted in the same job, or saved for submission in a subsequent job.
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The generated dependency graph includes all of the dependencies in your build, and is used by GitHub to generate
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[Dependabot Alerts](https://docs.github.com/en/code-security/dependabot/dependabot-alerts/about-dependabot-alerts)
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for vulnerable dependencies, as well as to populate the
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[Dependency Graph insights view](https://docs.github.com/en/code-security/supply-chain-security/understanding-your-software-supply-chain/exploring-the-dependencies-of-a-repository#viewing-the-dependency-graph).
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If you're confused by the behaviour you're seeing or have specific questions, please check out [the FAQ](dependency-submission-faq.md) before raising an issue.
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## General usage
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The following workflow will generate a dependency graph for a Gradle project and submit it immediately to the repository via the
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Dependency Submission API. For most projects, this default configuration should be all that you need.
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Simply add this as a new workflow file to your repository (eg `.github/workflows/dependency-submission.yml`).
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```yaml
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name: Dependency Submission
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on:
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push:
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branches: [ 'main' ]
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permissions:
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contents: write
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jobs:
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dependency-submission:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- uses: actions/setup-java@v4
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with:
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distribution: temurin
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java-version: 17
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- name: Generate and submit dependency graph
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uses: gradle/actions/dependency-submission@v4
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```
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### Gradle execution
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To generate a dependency graph, the `dependency-submission` action must perform a Gradle execution that resolves
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the dependencies of the project. All dependencies that are resolved in this execution will be included in the
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generated dependency graph. By default action executes a built-in task that is designed to resolve all build dependencies
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(`:ForceDependencyResolutionPlugin_resolveAllDependencies`).
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The action looks for a Gradle project in the root of the workspace, and executes this project with
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the Gradle wrapper, if configured for the project. If the wrapper is not configured, whatever `gradle` available
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on the command-line will be used.
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The action provides the ability to override the Gradle version and task to execute, as well as provide
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additional arguments that will be passed to Gradle on the command-line. See [Configuration Parameters](#configuration-parameters) below.
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### Publishing a Develocity Build Scan® from your dependency submission workflow
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You can automatically publish a free Develocity Build Scan on every run of `gradle/actions/dependency-submission`.
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Three input parameters are required, one to enable publishing and two more to accept the
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[Develocity terms of use](https://gradle.com/help/legal-terms-of-use).
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```yaml
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- name: Generate and submit dependency graph
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uses: gradle/actions/dependency-submission@v4
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with:
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build-scan-publish: true
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build-scan-terms-of-use-url: "https://gradle.com/help/legal-terms-of-use"
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build-scan-terms-of-use-agree: "yes"
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```
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A Build Scan makes it easy to determine the source of any dependency vulnerabilities in your project.
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### Configuration parameters
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In some cases, the default action configuration will not be sufficient, and additional action parameters will need to be specified.
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```yaml
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- name: Generate and save dependency graph
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uses: gradle/actions/dependency-submission@v4
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with:
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# Use a particular Gradle version instead of the configured wrapper.
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gradle-version: 8.6
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# The gradle project is not in the root of the repository.
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build-root-directory: my-gradle-project
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# Choose a task that will trigger dependency resolution
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dependency-resolution-task: myDependencyResolutionTask
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# Additional arguments that should be passed to execute Gradle
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additional-arguments: --no-configuration-cache
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# Enable configuration-cache reuse for this build.
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cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
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# Do not attempt to submit the dependency-graph. Save it as a workflow artifact.
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dependency-graph: generate-and-upload
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# Specify the location where dependency graph files will be generated.
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dependency-graph-report-dir: custom-report-dir
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# By default, failure to generate a dependency graph will cause the workflow to fail
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dependency-graph-continue-on-failure: true
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```
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See the [Action Metadata file](../dependency-submission/action.yml) for a more detailed description of each input parameter.
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The `GitHub Dependency Graph Gradle Plugin` can be further
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[configured via a number of environment variables](https://github.com/gradle/github-dependency-graph-gradle-plugin?#required-environment-variables).
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These will be automatically set by the `dependency-submission` action, but you may override these values
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by setting them explicitly in your workflow file.
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# Resolving a dependency vulnerability
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## Finding the source of a dependency vulnerability
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Once you have submitted a dependency graph, you may receive Dependabot Alerts warning about vulnerabilities in
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dependencies of your project. In the case of transitive dependencies, it may not be obvious how that dependency is
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used or what you can do to address the vulnerability alert.
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The first step to investigating a Dependabot Alert is to determine the source of the dependency. One of the best ways to
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do so is with a free Develocity Build Scan®, which makes it easy to explore the dependencies resolved in your build.
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<img width="1069" alt="image" src="https://github.com/gradle/actions/assets/179734/3a637dfd-396c-4e94-8332-dcc6eb5a35ac">
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In this example, we are searching for dependencies matching the name 'com.squareup.okio:okio' in the _Build Dependencies_ of
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the project. You can easily see that this dependency originates from 'com.github.ben-manes:gradle-versions-plugin'.
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Knowing the source of the dependency can help determine how to deal with the Dependabot Alert.
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Note that you may need to look at both the _Dependencies_ and the _Build Dependencies_ of your project to find the
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offending dependency.
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### When you cannot publish a Build Scan®
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If publishing a free Build Scan to https://scans.gradle.com isn't an option, and you don't have access to a private [Develocity
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server](https://gradle.com/) for your project, you can obtain information about the each resolved dependency by running the `dependency-submission` workflow with debug logging enabled.
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The simplest way to do so is to re-run the dependency-submission job with debug logging enabled:
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<img width="665" alt="image" src="https://github.com/gradle/actions/assets/179734/d95b889a-09fb-4731-91f2-baebbf647e31">
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When you do so, the Gradle build that generates the dependency-graph will include a log message for each dependency version included in the graph.
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Given the details in one log message, you can run (locally) the built-in [dependencyInsight](https://docs.gradle.org/current/userguide/viewing_debugging_dependencies.html#dependency_insights) task
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to determine exactly how the dependency was resolved.
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For example, given the following message in the logs:
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```
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Detected dependency 'com.google.guava:guava:32.1.3-jre': project = ':my-subproject', configuration = 'compileClasspath'
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```
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You would run the following command locally:
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```
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./gradlew :my-subproject:dependencyInsight --configuration compileClasspath --dependency com.google.guava:guava:32.1.3-jre
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```
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#### Dealing with 'classpath' configuration
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If the configuration value in the log message is "classpath" then instead of running `dependency-insight` you'll need to run the Gradle
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`buildEnvironment` task.
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For example, given the following message in the logs:
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```
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Detected dependency 'xerces:xercesImpl:2.12.2': project = ':my-subproject', configuration = 'classpath'
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```
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You would run the following command locally to expose the `xercesImpl` dependency:
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```
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./gradlew :my-subproject:buildEnvironment | grep -C 5 xercesImpl
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```
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## Updating the dependency version
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Once you've discovered the source of the dependency, the most obvious fix is to update the dependency to a patched version that does not
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suffer the vulnerability. For direct dependencies, this is often straightforward. But for transitive dependencies it can be tricky.
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### Dependency source is specified directly in the build
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If the dependency is used to compile your code or run your tests, it's normal for the underlying "source" of the dependency to have a
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version configured directly in the build. For example, if you have a vulnerable version of `com.squareup.okio:okio` in your `compileClasspath`, then
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it's likely you have a dependency like `com.squareup.moshi:moshi` configured as an `api` or `implementation` dependency.
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In this case there are 2 possibilities:
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1. There is a newer, compatible version of `com.squareup.moshi:moshi` available, and you can just bump the version number.
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2. There isn't a newer, compatible version of `com.squareup.moshi:moshi`
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In the second case, you can add a Dependency Constraint, to force the use of the newest version of `com.squareup.okio`:
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```kotlin
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dependencies {
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implementation("com.squareup.moshi:moshi:1.12.0")
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constraints {
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// Force a newer version of okio in transitive resolution
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implementation("com.squareup.okio:okio:3.6.0")
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}
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}
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```
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### Dependency source is a plugin classpath
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If the vulnerable dependency is introduced by a Gradle plugin, again the best option is to look for a newer version of the plugin.
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But if none is available, you can still use a dependency constraint to force a newer transitive version to be used.
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The dependency constraint must be added to the `classpath` configuration of the buildscript that loads the plugin.
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```kotlin
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buildscript {
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repositories {
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gradlePluginPortal()
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}
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dependencies {
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constraints {
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// Force a newer version of okio in transitive resolution
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classpath("com.squareup.okio:okio:3.6.0")
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}
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}
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}
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plugins {
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id("com.github.ben-manes.versions") version("0.51.0")
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}
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```
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## Limiting the dependencies that appear in the dependency graph
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By default, the `dependency-submission` action attempts to detect all dependencies declared and used by your Gradle build.
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At times it may helpful to limit the dependencies reported to GitHub, to avoid security alerts for dependencies that
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don't form a critical part of your product. For example, a vulnerability in the tool you use to generate documentation
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may not be as important as a vulnerability in one of your runtime dependencies.
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The `dependency-submission` action provides a convenient mechanism to filter the projects and configurations that
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contribute to the dependency graph.
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> [!NOTE]
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> Ideally, all dependencies involved in building and testing a project will be extracted and reported in a dependency graph.
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> These dependencies would be assigned to different scopes (eg development, runtime, testing) and the GitHub UI would make it easy to opt-in to security alerts for different dependency scopes.
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> However, this functionality does not yet exist.
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### Selecting Gradle projects that will contribute to the dependency graph
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If you do not want the dependency graph to include dependencies from every project in your build,
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you can easily exclude or include certain projects from the dependency extraction process.
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To restrict which Gradle subprojects contribute to the report, specify which projects to exclude or include via a regular expression.
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You can use the `dependency-graph-exclude-projects` and `dependency-graph-include-projects` input parameters for this purpose.
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Note that excluding a project in this way only removes dependencies that are _resolved_ as part of that project, and may
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not necessarily remove all dependencies _declared_ in that project. If another project depends on the excluded project
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then it may transitively resolve dependencies declared in the excluded project: these dependencies will still be included
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in the generated dependency graph.
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### Selecting Gradle configurations that will contribute to the dependency graph
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Similarly to Gradle projects, it is possible to exclude or include a set of dependency configurations from dependency graph generation,
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so that only dependencies resolved by the included configurations are reported.
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To restrict which Gradle configurations contribute to the report, specify which configurations to exclude or include via a regular expression.
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You can use the `dependency-graph-exclude-configurations` and `dependency-graph-include-configurations` input parameters for this purpose.
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Note that configuration exclusion applies to the configuration in which the dependency is _resolved_ which is not necessarily
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the configuration where the dependency is _declared_. For example if you decare a dependency as `implementation` in
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a Java project, that dependency will be resolved in `compileClasspath`, `runtimeClasspath` and possibly other configurations.
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### Example of project and configuration filtering
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For example, if you want to exclude dependencies resolved by the `buildSrc` project, and exclude dependencies from the `testCompileClasspath` and `testRuntimeClasspath` configurations, you would use the following configuration:
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```yaml
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- name: Generate and submit dependency graph
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uses: gradle/actions/dependency-submission@v4
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with:
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# Exclude all dependencies that originate solely in the 'buildSrc' project
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dependency-graph-exclude-projets: ':buildSrc'
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# Exclude dependencies that are only resolved in test classpaths
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dependency-graph-exclude-configurations: '.*[Tt]est(Compile|Runtime)Classpath'
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```
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# Advance usage scenarios
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## Using a custom plugin repository
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By default, the action downloads the `github-dependency-graph-gradle-plugin` from the Gradle Plugin Portal (https://plugins.gradle.org). If your GitHub Actions environment does not have access to this URL, you can specify a custom plugin repository to use with an environment variable.
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See [the setup-gradle docs](setup-gradle.md#using-a-custom-plugin-repository) for details.
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## Integrating the `dependency-review-action`
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The GitHub [dependency-review-action](https://github.com/actions/dependency-review-action) helps you
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understand dependency changes (and the security impact of these changes) for a pull request,
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by comparing the dependency graph for the pull-request with that of the HEAD commit.
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Example of a pull request workflow that executes a build for a pull request and runs the `dependency-review-action`:
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```yaml
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name: Dependency review for pull requests
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on:
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pull_request:
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permissions:
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contents: write
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jobs:
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dependency-submission:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- uses: actions/setup-java@v4
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with:
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distribution: temurin
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java-version: 17
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- name: Generate and submit dependency graph
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uses: gradle/actions/dependency-submission@v4
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- name: Perform dependency review
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uses: actions/dependency-review-action@v4
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```
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## Usage with pull requests from public forked repositories
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This `contents: write` permission is [not available for any workflow that is triggered by a pull request submitted from a public forked repository](https://docs.github.com/en/actions/security-guides/automatic-token-authentication#permissions-for-the-github_token).
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This limitation is designed to prevent a malicious pull request from effecting repository changes.
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Because of this restriction, we require 2 separate workflows in order to generate and submit a dependency graph:
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1. The first workflow runs directly against the pull request sources and will `generate-and-upload` the dependency graph.
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2. The second workflow is triggered on `workflow_run` of the first workflow, and will `download-and-submit` the previously saved dependency graph.
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***Main workflow file***
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```yaml
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name: Generate and save dependency graph
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on:
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pull_request:
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permissions:
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contents: read # 'write' permission is not available
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jobs:
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dependency-submission:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- uses: actions/setup-java@v4
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with:
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distribution: temurin
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java-version: 17
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- name: Generate and save dependency graph
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uses: gradle/actions/dependency-submission@v4
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with:
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dependency-graph: generate-and-upload
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```
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***Dependent workflow file***
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```yaml
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name: Download and submit dependency graph
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on:
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workflow_run:
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workflows: ['Generate and save dependency graph']
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types: [completed]
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permissions:
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actions: read
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contents: write
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jobs:
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submit-dependency-graph:
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runs-on: ubuntu-latest
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steps:
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- name: Download and submit dependency graph
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uses: gradle/actions/dependency-submission@v4
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with:
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dependency-graph: download-and-submit # Download saved dependency-graph and submit
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```
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### Integrating `dependency-review-action` for pull requests from public forked repositories
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To integrate the `dependency-review-action` into the pull request workflows above, a third workflow file is required.
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This workflow will be triggered directly on `pull_request`, but will wait until the dependency graph results are
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submitted before the dependency review can complete. The period to wait is controlled by the `retry-on-snapshot-warnings` input parameters.
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Here's an example of a separate "Dependency Review" workflow that will wait for 10 minutes for the above PR check workflow to complete.
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```yaml
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name: dependency-review
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on:
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pull_request:
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permissions:
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contents: read
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jobs:
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dependency-review:
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runs-on: ubuntu-latest
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steps:
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- name: 'Dependency Review'
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uses: actions/dependency-review-action@v4
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with:
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retry-on-snapshot-warnings: true
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retry-on-snapshot-warnings-timeout: 600
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```
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The `retry-on-snapshot-warnings-timeout` (in seconds) needs to be long enough to allow the entire `Generate and save dependency graph` and `Download and submit dependency graph` workflows (above) to complete.
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# Gradle version compatibility
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Dependency-graph generation is compatible with most versions of Gradle >= `5.2`, and is tested regularly against
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Gradle versions `5.2.1`, `5.6.4`, `6.0.1`, `6.9.4`, `7.1.1` and `7.6.3`, as well as all patched versions of Gradle 8.x.
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A known exception to this is that Gradle `7.0`, `7.0.1` and `7.0.2` are not supported.
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See [here](https://github.com/gradle/github-dependency-graph-gradle-plugin?tab=readme-ov-file#gradle-compatibility) for complete compatibility information.
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# Additional references
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- Dependency Submission Demo repository: https://github.com/gradle/github-dependency-submission-demo
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- GitHub Dependency Graph Gradle Plugin: https://github.com/gradle/github-dependency-graph-gradle-plugin
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- Webinar - Gradle at Scale with GitHub and GitHub Actions at Allegro: https://www.youtube.com/watch?v=gV94I28FPos
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