Add output parameters for the tool path and version

This allows calling the action multiple times in the
same job and retrieving the path and/or version in
other steps.

Fixes actions#65

.github/workflows/workflow.yml

@@ -35,15 +35,16 @@ jobs:
       if: runner.os == 'windows'
       run: move "${{ runner.tool_cache }}" "${{ runner.tool_cache }}.old"
     - name: Setup Java 13
+      id: setup-java
       uses: ./
       with:
         java-version: 13.0.2
     - name: Verify Java 13
       if: runner.os != 'windows'
-      run: __tests__/verify-java.sh 13.0.2
+      run: __tests__/verify-java.sh 13.0.2 "${{ steps.setup-java.outputs.path }}" "${{ steps.setup-java.outputs.version }}"
     - name: Verify Java 13 (Windows)
       if: runner.os == 'windows'
-      run: __tests__/verify-java.ps1 13.0.2
+      run: __tests__/verify-java.ps1 13.0.2 "${{ steps.setup-java.outputs.path }}" "${{ steps.setup-java.outputs.version }}"
 
   test-proxy:
     runs-on: ubuntu-latest
@@ -62,11 +63,12 @@ jobs:
     - name: Clear tool cache
       run: rm -rf $RUNNER_TOOL_CACHE/*
     - name: Setup Java 13
+      id: setup-java
       uses: ./
       with:
         java-version: 13.0.2
     - name: Verify Java 13
-      run: __tests__/verify-java.sh 13.0.2
+      run: __tests__/verify-java.sh 13.0.2 "${{ steps.setup-java.outputs.path }}" "${{ steps.setup-java.outputs.version }}"
 
   test-bypass-proxy:
     runs-on: ubuntu-latest
@@ -78,8 +80,9 @@ jobs:
     - name: Clear tool cache
       run: rm -rf $RUNNER_TOOL_CACHE/*
     - name: Setup Java 13
+      id: setup-java
       uses: ./
       with:
         java-version: 13.0.2
     - name: Verify Java 13
-      run: __tests__/verify-java.sh 13.0.2
+      run: __tests__/verify-java.sh 13.0.2 "${{ steps.setup-java.outputs.path }}" "${{ steps.setup-java.outputs.version }}"

__tests__/verify-java.ps1

@@ -1,11 +1,31 @@
 if (!$args.Count -or !$args[0])
 {
-  throw "Must supply java version argument"
+  throw "::error::Must supply java version argument"
 }
 
 $java_version = & cmd.exe /c "java -version 2>&1" | Out-String
 Write-Host "Found java version: $java_version"
 if (!$java_version.Contains($args[0]))
 {
-  throw "Unexpected version"
+  throw "::error::Unexpected version"
+}
+
+if ($args.Count -lt 2 -or !$args[1])
+{
+  throw "::error::Must supply java path argument"
+}
+
+if ($args[1] -ne $Env:JAVA_HOME)
+{
+  throw "::error::Unexpected path"
+}
+
+if ($args.Count -lt 3 -or !$args[2])
+{
+  throw "::error::Must supply java version argument"
+}
+
+if ($args[0] -ne $args[2])
+{
+  throw "::error::Unexpected version"
 }

__tests__/verify-java.sh

@@ -1,13 +1,33 @@
 #!/bin/sh
 
 if [ -z "$1" ]; then
-  echo "Must supply java version argument"
+  echo "::error::Must supply java version argument"
   exit 1
 fi
 
 java_version="$(java -version 2>&1)"
 echo "Found java version: $java_version"
 if [ -z "$(echo $java_version | grep --fixed-strings $1)" ]; then
-  echo "Unexpected version"
+  echo "::error::Unexpected version"
+  exit 1
+fi
+
+if [ -z "$2" ]; then
+  echo "::error::Must supply java path argument"
+  exit 1
+fi
+
+if [ "$2" != "$JAVA_HOME" ]; then
+  echo "::error::Unexpected path"
+  exit 1
+fi
+
+if [ -z "$3" ]; then
+  echo "::error::Must supply java version argument"
+  exit 1
+fi
+
+if [ "$1" != "$3" ]; then
+  echo "::error::Unexpected version"
   exit 1
 fi

action.yml

@@ -36,6 +36,11 @@ inputs:
   settings-path:
     description: 'Path to where the settings.xml file will be written. Default is ~/.m2.'
     required: false
+outputs:
+  path:
+    description: 'Path to where the java environment has been installed (same as $JAVA_HOME)'
+  version:
+    description: 'Actual version of the java environment that has been installed'
 runs:
   using: 'node12'
   main: 'dist/index.js'

src/installer.ts

@@ -90,6 +90,8 @@ export async function getJava(
   core.exportVariable('JAVA_HOME', toolPath);
   core.exportVariable(extendedJavaHome, toolPath);
   core.addPath(path.join(toolPath, 'bin'));
+  core.setOutput('path', toolPath);
+  core.setOutput('version', version);
 }
 
 function getCacheVersionString(version: string) {