Add support for --jvm-index (#465)

README.md

@@ -18,6 +18,11 @@ Inspired by [olafurpg/setup-scala](https://github.com/olafurpg/setup-scala) and
 - `jvm` (optional): JVM to install
   - one of the options from `cs java --available`.
   - if left empty either the existing JVM will be used or Coursier will install its default JVM.
+
+- `jvm-index` (optional): The JVM index source
+  - arbitrary URL containing the JVM index source like in `cs java --available --jvm-index https://url/of/your/index.json`.
+  - if left empty the coursier index will be used as default JVM index source
+
 - `apps` (optional): Scala apps to install (`sbtn` by default)
   - space separated list of app names (from the [main channel](https://github.com/coursier/apps))
 
@@ -29,6 +34,7 @@ Inspired by [olafurpg/setup-scala](https://github.com/olafurpg/setup-scala) and
     - uses: coursier/setup-action@v1
       with:
         jvm: adopt:11
+        jvm-index: https://url/of/your/index.json
         apps: sbtn bloop ammonite
 ```
 

action.yml

@@ -9,6 +9,10 @@ inputs:
     description: 'JVM to install (leave empty to use default)'
     required: false
     default: ''
+  jvm-index:
+    description: 'Arbitrary URL containing the JVM index source (leave empty to use default)'
+    required: false
+    default: ''
   apps:
     description: 'Applications to install'
     required: false

src/main.ts

@@ -107,12 +107,14 @@ async function run(): Promise<void> {
 
     await core.group('Install JVM', async () => {
       const jvmInput = core.getInput('jvm')
+      const jvmIndexInput = core.getInput('jvm-index')
       const jvmArg = jvmInput ? ['--jvm', jvmInput] : []
+      const jvmIndexArg = jvmIndexInput ? ['--jvm-index', jvmIndexInput] : []
       if (!jvmInput && process.env.JAVA_HOME) {
         core.info(`skipping, JVM is already installed in ${process.env.JAVA_HOME}`)
       } else {
-        await cs('java', ...jvmArg, '-version')
-        const csJavaHome = await cs('java-home', ...jvmArg)
+        await cs('java', ...jvmArg, ...jvmIndexArg, '-version')
+        const csJavaHome = await cs('java-home', ...jvmArg, ...jvmIndexArg)
         core.exportVariable('JAVA_HOME', csJavaHome)
         core.addPath(path.join(csJavaHome, 'bin'))
       }