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setup-java/docs/advanced-usage.md

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# Usage
- [Selecting a Java distribution](#Selecting-a-Java-distribution)
- [Eclipse Temurin](#Eclipse-Temurin)
- [Adopt](#Adopt)
- [Zulu](#Zulu)
- [Installing custom Java package type](#Installing-custom-Java-package-type)
- [Installing custom Java architecture](#Installing-custom-Java-architecture)
- [Installing custom Java distribution from local file](#Installing-Java-from-local-file)
- [Testing against different Java distributions](#Testing-against-different-Java-distributions)
- [Testing against different platforms](#Testing-against-different-platforms)
- [Publishing using Apache Maven](#Publishing-using-Apache-Maven)
- [Publishing using Gradle](#Publishing-using-Gradle)
- [Hosted Tool Cache](#Hosted-Tool-Cache)
See [action.yml](../action.yml) for more details on task inputs.
## Selecting a Java distribution
Inputs `java-version` and `distribution` are mandatory and needs to be provided. See [Supported distributions](../README.md#Supported-distributions) for a list of available options.
### Eclipse Temurin
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'temurin'
java-version: '11'
- run: java -cp java HelloWorldApp
```
### Adopt
**NOTE:** Adopt OpenJDK got moved to Eclipse Temurin and won't be updated anymore. It is highly recommended to migrate workflows from `adopt` to `temurin` to keep receiving software and security updates. See more details in the [Good-bye AdoptOpenJDK post](https://blog.adoptopenjdk.net/2021/08/goodbye-adoptopenjdk-hello-adoptium/).
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'adopt-hotspot'
java-version: '11'
- run: java -cp java HelloWorldApp
```
### Zulu
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'zulu'
java-version: '11'
java-package: jdk # optional (jdk, jre, jdk+fx or jre+fx) - defaults to jdk
- run: java -cp java HelloWorldApp
```
### Liberica
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'liberica'
java-version: '11'
java-package: jdk # optional (jdk, jre, jdk+fx or jre+fx) - defaults to jdk
- run: java -cp java HelloWorldApp
```
### Microsoft
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: 'microsoft'
java-version: '11'
- run: java -cp java HelloWorldApp
```
## Installing custom Java package type
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: '11'
java-package: jdk # optional (jdk or jre) - defaults to jdk
- run: java -cp java HelloWorldApp
```
## Installing custom Java architecture
```yaml
steps:
- uses: actions/checkout@v2
- uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: '11'
architecture: x86 # optional - defaults to x64
- run: java -cp java HelloWorldApp
```
## Installing Java from local file
If your use-case requires a custom distribution or a version that is not provided by setup-java, you can download it manually and setup-java will take care of the installation and caching on the VM:
```yaml
steps:
- run: |
download_url="https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.10%2B9/OpenJDK11U-jdk_x64_linux_hotspot_11.0.10_9.tar.gz"
wget -O $RUNNER_TEMP/java_package.tar.gz $download_url
- uses: actions/setup-java@v2
with:
distribution: 'jdkfile'
jdkFile: ${{ runner.temp }}/java_package.tar.gz
java-version: '11.0.0'
architecture: x64
- run: java -cp java HelloWorldApp
```
## Testing against different Java distributions
**NOTE:** The different distributors can provide discrepant list of available versions / supported configurations. Please refer to the official documentation to see the list of supported versions.
```yaml
jobs:
build:
runs-on: ubuntu-20.04
strategy:
matrix:
distribution: [ 'zulu', 'temurin' ]
java: [ '8', '11' ]
name: Java ${{ matrix.Java }} (${{ matrix.distribution }}) sample
steps:
- uses: actions/checkout@v2
- name: Setup java
uses: actions/setup-java@v2
with:
distribution: ${{ matrix.distribution }}
java-version: ${{ matrix.java }}
- run: java -cp java HelloWorldApp
```
#### Testing against different platforms
```yaml
jobs:
build:
runs-on: ${{ matrix.os }}
strategy:
matrix:
java: [ '8', '11' ]
os: [ 'ubuntu-latest', 'macos-latest', 'windows-latest' ]
name: Java ${{ matrix.Java }} (${{ matrix.os }}) sample
steps:
- uses: actions/checkout@v2
- name: Setup java
uses: actions/setup-java@v2
with:
distribution: 'temurin'
java-version: ${{ matrix.java }}
- run: java -cp java HelloWorldApp
```
## Publishing using Apache Maven
### Yaml example:
```yaml
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up JDK 11
uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: '11'
- name: Build with Maven
run: mvn -B package --file pom.xml
- name: Publish to GitHub Packages Apache Maven
run: mvn deploy
env:
GITHUB_TOKEN: ${{ github.token }} # GITHUB_TOKEN is the default env for the password
- name: Set up Apache Maven Central
uses: actions/setup-java@v2
with: # running setup-java again overwrites the settings.xml
distribution: 'temurin'
java-version: '11'
server-id: maven # Value of the distributionManagement/repository/id field of the pom.xml
server-username: MAVEN_USERNAME # env variable for username in deploy
server-password: MAVEN_CENTRAL_TOKEN # env variable for token in deploy
gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }} # Value of the GPG private key to import
gpg-passphrase: MAVEN_GPG_PASSPHRASE # env variable for GPG private key passphrase
- name: Publish to Apache Maven Central
run: mvn deploy
env:
MAVEN_USERNAME: maven_username123
MAVEN_CENTRAL_TOKEN: ${{ secrets.MAVEN_CENTRAL_TOKEN }}
MAVEN_GPG_PASSPHRASE: ${{ secrets.MAVEN_GPG_PASSPHRASE }}
```
The two `settings.xml` files created from the above example look like the following.
`settings.xml` file created for the first deploy to GitHub Packages
```xml
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 https://maven.apache.org/xsd/settings-1.0.0.xsd">
<servers>
<server>
<id>github</id>
<username>${env.GITHUB_ACTOR}</username>
<password>${env.GITHUB_TOKEN}</password>
</server>
<server>
<id>gpg.passphrase</id>
<passphrase>${env.GPG_PASSPHRASE}</passphrase>
</server>
</servers>
</settings>
```
`settings.xml` file created for the second deploy to Apache Maven Central
```xml
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 https://maven.apache.org/xsd/settings-1.0.0.xsd">
<servers>
<server>
<id>maven</id>
<username>${env.MAVEN_USERNAME}</username>
<password>${env.MAVEN_CENTRAL_TOKEN}</password>
</server>
<server>
<id>gpg.passphrase</id>
<passphrase>${env.MAVEN_GPG_PASSPHRASE}</passphrase>
</server>
</servers>
</settings>
```
***NOTE***: The `settings.xml` file is created in the Actions `$HOME/.m2` directory. If you have an existing `settings.xml` file at that location, it will be overwritten. See [below](#apache-maven-with-a-settings-path) for using the `settings-path` to change your `settings.xml` file location.
If you don't want to overwrite the `settings.xml` file, you can set `overwrite-settings: false`
### Extra setup for pom.xml:
The Maven GPG Plugin configuration in the pom.xml file should contain the following structure to avoid possible issues like `Inappropriate ioctl for device` or `gpg: signing failed: No such file or directory`:
```xml
<configuration>
<!-- Prevent gpg from using pinentry programs -->
<gpgArguments>
<arg>--pinentry-mode</arg>
<arg>loopback</arg>
</gpgArguments>
</configuration>
```
GPG 2.1 requires `--pinentry-mode` to be set to `loopback` in order to pick up the `gpg.passphrase` value defined in Maven `settings.xml`.
### GPG
If `gpg-private-key` input is provided, the private key will be written to a file in the runner's temp directory, the private key file will be imported into the GPG keychain, and then the file will be promptly removed before proceeding with the rest of the setup process. A cleanup step will remove the imported private key from the GPG keychain after the job completes regardless of the job status. This ensures that the private key is no longer accessible on self-hosted runners and cannot "leak" between jobs (hosted runners are always clean instances).
**GPG key should be exported by: `gpg --armor --export-secret-keys YOUR_ID`**
See the help docs on [Publishing a Package](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-apache-maven-for-use-with-github-packages#publishing-a-package) for more information on the `pom.xml` file.
## Apache Maven with a settings path
When using an Actions self-hosted runner with multiple shared runners the default `$HOME` directory can be shared by a number runners at the same time which could overwrite existing settings file. Setting the `settings-path` variable allows you to choose a unique location for your settings file.
```yaml
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up JDK 11 for Shared Runner
uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: '11'
server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
settings-path: ${{ github.workspace }} # location for the settings.xml file
- name: Build with Maven
run: mvn -B package --file pom.xml
- name: Publish to GitHub Packages Apache Maven
run: mvn deploy -s $GITHUB_WORKSPACE/settings.xml
env:
GITHUB_TOKEN: ${{ github.token }}
```
## Publishing using Gradle
```yaml
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up JDK 11
uses: actions/setup-java@v2
with:
distribution: '<distribution>'
java-version: '11'
- name: Build with Gradle
run: gradle build
- name: Publish to GitHub Packages
run: gradle publish
env:
USERNAME: ${{ github.actor }}
PASSWORD: ${{ secrets.GITHUB_TOKEN }}
```
***NOTE: The `USERNAME` and `PASSWORD` need to correspond to the credentials environment variables used in the publishing section of your `build.gradle`.***
See the help docs on [Publishing a Package with Gradle](https://help.github.com/en/github/managing-packages-with-github-packages/configuring-gradle-for-use-with-github-packages#example-using-gradle-groovy-for-a-single-package-in-a-repository) for more information on the `build.gradle` configuration file.
## Hosted Tool Cache
GitHub Hosted Runners have a tool cache that comes with some Java versions pre-installed. This tool cache helps speed up runs and tool setup by not requiring any new downloads. There is an environment variable called `RUNNER_TOOL_CACHE` on each runner that describes the location of this tools cache and this is where you can find the pre-installed versions of Java. `setup-java` works by taking a specific version of Java in this tool cache and adding it to PATH if the version, architecture and distribution match.
Currently, LTS versions of Adopt OpenJDK (`adopt`) are cached on the GitHub Hosted Runners.
The tools cache gets updated on a weekly basis. For information regarding locally cached versions of Java on GitHub hosted runners, check out [GitHub Actions Virtual Environments](https://github.com/actions/virtual-environments).
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