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Minor improvements to README

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@ -4,11 +4,15 @@ This GitHub Action can be used to configure Gradle and optionally execute a Grad
## Usage ## Usage
The following workflow will run `./gradlew build` on ubuntu, macos and windows. The following workflows will execute a Gradle build on ubuntu, macos and windows.
The only prerequisite is to have Java installed: you define the version of Java you need to run the build using the `actions/setup-java` action. The only prerequisite is to have Java installed: you define the version of Java you need to run the build using the `actions/setup-java` action.
### Use the action to setup Gradle for later steps
If you have an existing workflow invoking Gradle, you can simply add an initial "Setup Gradle" Step to benefit from caching,
build-scan capture and other features of the gradle-build-action.
```yaml ```yaml
# .github/workflows/gradle-build-pr.yml
name: Run Gradle on PRs name: Run Gradle on PRs
on: pull_request on: pull_request
jobs: jobs:
@ -22,35 +26,44 @@ jobs:
- uses: actions/setup-java@v1 - uses: actions/setup-java@v1
with: with:
java-version: 11 java-version: 11
- uses: gradle/gradle-build-action@v2
- name: Setup Gradle
uses: gradle/gradle-build-action@v2
- name: Execute Gradle build
run: ./gradlew build
```
### Use the action to setup and execute Gradle
The `gradle-build-action` can also be used for the actual Gradle execution, by providing an `arguments` parameter.
The following workflow is effectively the same as the one above, without using a separate `run` step.
```yaml
name: Run Gradle on PRs
on: pull_request
jobs:
gradle:
strategy:
matrix:
os: [ubuntu-latest, macos-latest, windows-latest]
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v1
with:
java-version: 11
- name: Setup and execute Gradle build
uses: gradle/gradle-build-action@v2
with: with:
arguments: build arguments: build
``` ```
The `gradle-build-action` can also be used for caching Gradle state without owning the actual Gradle execution. ### Multiple Gradle executions in the same Job
The following workflow is effectively the same as the one above, but supports full scripting of the Gradle invocation.
```yaml
# .github/workflows/gradle-build-pr.yml
name: Run Gradle on PRs
on: pull_request
jobs:
gradle:
strategy:
matrix:
os: [ubuntu-latest, macos-latest, windows-latest]
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v1
with:
java-version: 11
- uses: gradle/gradle-build-action@v2
- run: ./gradlew build
```
It is possible to configure multiple Gradle executions to run sequentially in the same job. It is possible to configure multiple Gradle executions to run sequentially in the same job.
Each invocation will start its run with the filesystem state remaining from the previous execution. The initial Action step will perform the Gradle setup.
```yaml ```yaml
- uses: gradle/gradle-build-action@v2 - uses: gradle/gradle-build-action@v2
@ -69,7 +82,7 @@ The same can be achieved with a single `gradle-build-action` step and multiple `
- run: ./gradlew check - run: ./gradlew check
``` ```
### Why is this better than running Gradle directly? ## Why use the `gradle-build-action`?
It is possible to directly invoke Gradle in your workflow, and the `setup-java` action provides a simple way to cache Gradle dependencies. It is possible to directly invoke Gradle in your workflow, and the `setup-java` action provides a simple way to cache Gradle dependencies.
@ -83,9 +96,9 @@ However, the `gradle-build-action` offers a number of advantages over this appro
The `gradle-build-action` is designed to provide these benefits with minimal configuration. The `gradle-build-action` is designed to provide these benefits with minimal configuration.
These features work both when Gradle is executed via the `gradle-build-action` and for any Gradle execution in subsequent steps. These features work both when Gradle is executed via the `gradle-build-action` and for any Gradle execution in subsequent steps.
## Gradle Installation ## Use specific Gradle version
The `gradle-build-action` will download and install a specified Gradle version, adding this installed version to the PATH. The `gradle-build-action` will download, install and run a specified Gradle version, adding this installed version to the PATH.
Downloaded Gradle versions are stored in the GitHub Actions cache, to avoid requiring downloading again later. Downloaded Gradle versions are stored in the GitHub Actions cache, to avoid requiring downloading again later.
```yaml ```yaml
@ -109,7 +122,6 @@ Moreover, you can use the following aliases:
This can be handy to automatically verify your build works with the latest release candidate of Gradle: This can be handy to automatically verify your build works with the latest release candidate of Gradle:
```yaml ```yaml
# .github/workflows/test-gradle-rc.yml
name: Test latest Gradle RC name: Test latest Gradle RC
on: on:
schedule: schedule: