Usability improvements:

- Include bundle name in cache key
- Emit a few more messages at 'info'

.eslintignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

.eslintrc.json

@@ -0,0 +1,52 @@
+{
+    "plugins": ["jest", "@typescript-eslint"],
+    "extends": ["plugin:github/recommended"],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+      "ecmaVersion": 9,
+      "sourceType": "module",
+      "project": "./tsconfig.json"
+    },
+    "rules": {
+      "eslint-comments/no-use": "off",
+      "import/no-namespace": "off",
+      "no-unused-vars": "off",
+      "@typescript-eslint/no-unused-vars": "error",
+      "@typescript-eslint/explicit-member-accessibility": ["error", {"accessibility": "no-public"}],
+      "@typescript-eslint/no-require-imports": "error",
+      "@typescript-eslint/array-type": "error",
+      "@typescript-eslint/await-thenable": "error",
+      "camelcase": "off",
+      "@typescript-eslint/explicit-function-return-type": ["error", {"allowExpressions": true}],
+      "@typescript-eslint/func-call-spacing": ["error", "never"],
+      "@typescript-eslint/no-array-constructor": "error",
+      "@typescript-eslint/no-empty-interface": "error",
+      "@typescript-eslint/no-explicit-any": "error",
+      "@typescript-eslint/no-extraneous-class": "error",
+      "@typescript-eslint/no-for-in-array": "error",
+      "@typescript-eslint/no-inferrable-types": "error",
+      "@typescript-eslint/no-misused-new": "error",
+      "@typescript-eslint/no-namespace": "error",
+      "@typescript-eslint/no-non-null-assertion": "warn",
+      "@typescript-eslint/no-unnecessary-qualifier": "error",
+      "@typescript-eslint/no-unnecessary-type-assertion": "error",
+      "@typescript-eslint/no-useless-constructor": "error",
+      "@typescript-eslint/no-var-requires": "error",
+      "@typescript-eslint/prefer-for-of": "warn",
+      "@typescript-eslint/prefer-function-type": "warn",
+      "@typescript-eslint/prefer-includes": "error",
+      "@typescript-eslint/prefer-string-starts-ends-with": "error",
+      "@typescript-eslint/promise-function-async": "error",
+      "@typescript-eslint/require-array-sort-compare": ["error", {"ignoreStringArrays":  true}],
+      "@typescript-eslint/restrict-plus-operands": "error",
+      "semi": "off",
+      "@typescript-eslint/semi": ["error", "never"],
+      "@typescript-eslint/type-annotation-spacing": "error",
+      "@typescript-eslint/unbound-method": "error"
+    },
+    "env": {
+      "node": true,
+      "es6": true,
+      "jest/globals": true
+    }
+  }

.github/workflows/dev.yml

@@ -1,25 +1,24 @@
-name: "PR Checks"
-on: [pull_request, push]
+# make sure the build works and doesn't produce spurious changes
+name: dev
+
+on:
+  pull_request:
+  push:
 
 jobs:
-  check_pr:
+  check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-
-    - name: "npm ci"
-      run: npm ci
-
-    - name: "npm run build"
-      run: npm run build
-
-    - name: "npm run test"
-      run: npm run test
-
-    - name: "check for uncommitted changes"
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Build
+      run: |
+        npm install
+        npm run all
+    - name: Check for uncommitted changes
       # Ensure no changes, but ignore node_modules dir since dev/fresh ci deps installed.
       run: |
         git diff --exit-code --stat -- . ':!node_modules' \
-        || (echo "##[error] found changed files after build. please 'npm run build && npm run format'" \
+        || (echo "##[error] found changed files after build. please 'npm run all'" \
                  "and check in all changes" \
             && exit 1)

.github/workflows/failure-cases.yml

@@ -0,0 +1,38 @@
+ # Run builds under certain failure conditions to allow the output to be manually inspected.
+# These build invocations are informational only, and are expected to fail
+name: failure-cases
+
+on:
+  pull_request:
+  push:
+  workflow_dispatch:
+
+env:
+  CACHE_KEY_PREFIX: ${{github.workflow}}#${{github.run_number}}-
+
+jobs:
+
+  wrapper-missing:
+    continue-on-error: true
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Test wrapper missing
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/no-wrapper
+        arguments: help
+
+  bad-configuration:
+    continue-on-error: true
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Test bad config value
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/no-wrapper
+        arguments: help
+        cache-disabled: yes

.github/workflows/integration-testing-kotlin-dsl.yml

@@ -0,0 +1,37 @@
+ # Make sure the action works on a clean machine without building
+name: integration-testing-kotlin-dsl
+
+on:
+  pull_request:
+  push:
+  workflow_dispatch:
+
+env:
+  CACHE_KEY_PREFIX: ${{github.workflow}}#${{github.run_number}}-
+  CACHE_DEBUG_ENABLED: true
+
+jobs:
+  # Use kotlin-dsl project to verify caching of generated jars and compiled scripts
+  seed-build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Build kotlin-dsl project
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/kotlin-dsl
+        arguments: test
+
+  # Check that the build can run --offline
+  verify-build:
+    needs: seed-build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Build kotlin-dsl project
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/kotlin-dsl
+        arguments: test --offline

.github/workflows/integration-testing.yml

@@ -0,0 +1,121 @@
+ # Verify the functionality works as expected
+name: integration-testing
+
+on:
+  pull_request:
+  push:
+  workflow_dispatch:
+
+env:
+  CACHE_KEY_PREFIX: ${{github.workflow}}#${{github.run_number}}-
+
+jobs:
+  # Run initial Gradle builds to push initial cache entries
+  # These builds should start fresh without cache hits, due to the seed injected into the cache key above.
+  seed-build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Build using Gradle wrapper
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/basic
+        arguments: test
+    - name: Build with configuration-cache enabled
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/basic
+        arguments: test --configuration-cache
+   
+  # Tests for executing with different Gradle versions. 
+  # Each build verifies that it is executed with the expected Gradle version.
+  gradle-execution:
+    needs: seed-build
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        include:
+          - os: windows-latest
+            script-suffix: '.bat'
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Test use defined Gradle version
+      uses: ./
+      with:
+        gradle-version: 6.9
+        build-root-directory: __tests__/samples/no-wrapper
+        arguments: help -DgradleVersionCheck=6.9
+        cache-read-only: true
+    - name: Test use Gradle version alias
+      uses: ./
+      with:
+        gradle-version: release-candidate
+        build-root-directory: __tests__/samples/no-wrapper
+        arguments: help -DgradleVersionCheck=7.2
+        cache-read-only: true
+    - name: Test use defined Gradle executable
+      uses: ./
+      with:
+        gradle-executable: __tests__/samples/basic/gradlew${{ matrix.script-suffix }}
+        build-root-directory: __tests__/samples/no-wrapper
+        arguments: help -DgradleVersionCheck=7.1.1
+        cache-read-only: true
+
+  # Test that the gradle-user-home cache will cache dependencies, by running build with --offline
+  dependencies-cache:
+    needs: seed-build
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Execute Gradle build with --offline
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/basic
+        arguments: test --offline
+        cache-read-only: true
+
+  # Test that the gradle-user-home cache will cache and restore local build-cache
+  build-cache:
+    needs: seed-build
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Execute Gradle build and verify tasks from cache
+      uses: ./
+      with:
+        build-root-directory: __tests__/samples/basic
+        arguments: test -DverifyCachedBuild=true
+        cache-read-only: true
+
+  # Test that the project-dot-gradle cache will cache and restore configuration-cache
+  configuration-cache:
+    needs: seed-build
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+    - name: Execute Gradle build and verify cached configuration
+      uses: ./
+      env: 
+        VERIFY_CACHED_CONFIGURATION: true
+      with:
+        build-root-directory: __tests__/samples/basic
+        arguments: test --configuration-cache
+        cache-read-only: true

.gitignore

@@ -1,10 +1,6 @@
-lib/
+# Dependency directory
 node_modules
 
-.idea
-*.iml
-__tests__/runner/*
-
 # Rest pulled from https://github.com/github/gitignore/blob/master/Node.gitignore
 # Logs
 logs
@@ -93,3 +89,18 @@ typings/
 
 # DynamoDB Local files
 .dynamodb/
+
+# OS metadata
+.DS_Store
+Thumbs.db
+
+# Ignore built ts files
+__tests__/runner/*
+# lib/**/*
+
+# IntelliJ IDEA config files
+.idea/
+*.iml
+
+# ASDF tool configuration
+.tool-versions

.prettierignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

.prettierrc.json

@@ -0,0 +1,11 @@
+{
+    "printWidth": 80,
+    "tabWidth": 4,
+    "useTabs": false,
+    "semi": false,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": false,
+    "arrowParens": "avoid",
+    "parser": "typescript"
+  }

README.md

@@ -1,19 +1,15 @@
-# Execute Gradle commands in Github Actions workflows
+# Execute Gradle builds in GitHub Actions workflows
 
-This Github Action can be used to run arbitrary Gradle commands on any platform supported by Github Actions.
-
-You might also be interested by the related [Gradle Plugin](https://github.com/eskatos/gradle-github-actions-plugin) that allows your build to easily get Github Actions environment and tag Gradle Build Scans accordingly.
+This GitHub Action can be used to execute a Gradle build on any platform supported by GitHub Actions.
 
 ## Usage
 
-The following workflow will run `gradle build` using the wrapper from the repository on ubuntu, macos and windows. The only prerequisite is to have Java installed, you can define the version you need to run the build using the `actions/setup-java` action.
-
-
+The following workflow will run `./gradlew build` using the wrapper from the repository 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.
 
 ```yaml
 # .github/workflows/gradle-build-pr.yml
 name: Run Gradle on PRs
-on: pull-request
+on: pull_request
 jobs:
   gradle:
     strategy:
@@ -21,11 +17,11 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: actions/setup-java@v1
       with:
         java-version: 11
-    - uses: eskatos/gradle-command-action@v1
+    - uses: gradle/gradle-build-action@v1
       with:
         arguments: build
 ```
@@ -46,10 +42,10 @@ arguments: build -DsystemProperty=bar
 
 See `gradle --help` for more information.
 
-If you need to pass environment variables, simply use the Github Actions workflow syntax:
+If you need to pass environment variables, simply use the GitHub Actions workflow syntax:
 
 ```yaml
-- uses: eskatos/gradle-command-action@v1
+- uses: gradle/gradle-build-action@v1
   env:
     CI: true
 ```
@@ -57,33 +53,33 @@ If you need to pass environment variables, simply use the Github Actions workflo
 ## Run a build from a different directory
 
 ```yaml
-- uses: eskatos/gradle-command-action@v1
+- uses: gradle/gradle-build-action@v1
   with:
     build-root-directory: some/subdirectory
 ```
 
+## Use a specific `gradle` executable
+
+```yaml
+ - uses: gradle/gradle-build-action@v1
+   with:
+     gradle-executable: path/to/gradle
+```
+
 ## Use a Gradle wrapper from a different directory
  
 ```yaml
- - uses: eskatos/gradle-command-action@v1
+ - uses: gradle/gradle-build-action@v1
    with:
-     wrapper-directory: path/to/wrapper-directory
+     gradle-executable: path/to/gradlew
  ```
 
-## Use a specific `gradle` executable
-
-```yaml
- - uses: eskatos/gradle-command-action@v1
-   with:
-     gradle-executable: path/to/gradle
-```
-
 ## Setup and use a declared Gradle version
 
 ```yaml
- - uses: eskatos/gradle-command-action@v1
+ - uses: gradle/gradle-build-action@v1
    with:
-     gradle-version: 5.6.2
+     gradle-version: 6.5
 ```
 
 `gradle-version` can be set to any valid Gradle version.
@@ -92,10 +88,11 @@ Moreover, you can use the following aliases:
 
 | Alias | Selects |
 | --- |---|
-| `current`      | The current [stable release](https://gradle.org/install/) |
-| `rc`      | The current [release candidate](https://gradle.org/release-candidate/) if any, otherwise fallback to `current` |
-| `nightly` | The latest [nightly](https://gradle.org/nightly/), fails if none. |
-| `release-nightly` | The latest [release nightly](https://gradle.org/release-nightly/), fails if none.      |
+| `wrapper`           | The Gradle wrapper's version (default, useful for matrix builds) |
+| `current`           | The current [stable release](https://gradle.org/install/) |
+| `release-candidate` | The current [release candidate](https://gradle.org/release-candidate/) if any, otherwise fallback to `current` |
+| `nightly`           | The latest [nightly](https://gradle.org/nightly/), fails if none. |
+| `release-nightly`   | The latest [release nightly](https://gradle.org/release-nightly/), fails if none.      |
 
 This can be handy to, for example, automatically test your build with the next Gradle version once a release candidate is out:
 
@@ -109,19 +106,58 @@ jobs:
   gradle-rc:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: actions/setup-java@v1
       with:
         java-version: 11
-    - uses: eskatos/gradle-command-action@v1
+    - uses: gradle/gradle-build-action@v1
       with:
-        gradle-version: rc
+        gradle-version: release-candidate
         arguments: build --dry-run # just test build configuration
 ```
 
-# Build scans
+## Caching
 
-If your build publishes a [build scan](https://gradle.com/build-scans/) the `gradle-command-action` action will emit the link to the published build scan as an output named `build-scan-url`.
+This action provides 3 levels of caching to help speed up your GitHub Actions:
+
+- `distributions` caches any distributions downloaded to satisfy a `gradle-version` parameter ;
+- `gradle-user-home` caches downloaded dependencies, wrapper distributions, and other stuff from the Gradle User home directory ;
+- `project-dot-gradle` caches stored [configuration-cache](https://docs.gradle.org/nightly/userguide/configuration_cache.html) state, saving time configuring the build.
+
+Each of these are enabled by default. To save caching space, you can disable any of them as follows:
+
+```yaml
+distributions-cache-enabled: true
+gradle-user-home-cache-enabled: true
+project-dot-gradle-cache-enabled: true
+```
+
+The distributions cache uses a cache key that is unique to the downloaded distribution. This will not change over time.
+
+The `gradle-user-home` and `project-dot-gradle` caches compute a cache key based on the current commit and the Gradle invocation.
+As such, these are likely to change on each subsequent run of GitHub actions, allowing the most recent state to always be available in the GitHub actions cache.
+
+By default, this action aims to cache any and all reusable state that may be speed up a subsequent build invocation. 
+
+At this time it is not possible to fine-tune this caching. If you have a legitimate use case for fine-grained caching or restricting which files are cached, please raise an issue.
+
+### Using the caches read-only
+
+Cache storage space is limited for GitHub actions, and writing new cache entries can trigger the deletion of exising entries.
+In some circumstances, it makes sense for a Gradle invocation to read any existing cache entries but not to write changes back.
+For example, you may want to write cache entries for builds on your `main` branch, but not for any PR build invocations.
+
+You can enable read-only caching for any of the caches asfollows:
+
+```yaml
+distributions-cache-enabled: read-only
+gradle-user-home-cache-enabled: read-only
+project-dot-gradle-cache-enabled: read-only
+```
+
+## Build scans
+
+If your build publishes a [build scan](https://gradle.com/build-scans/) the `gradle-build-action` action will emit the link to the published build scan as an output named `build-scan-url`.
 
 You can then use that link in subsequent actions of your workflow.
 
@@ -130,7 +166,7 @@ For example:
 ```yaml
 # .github/workflows/gradle-build-pr.yml
 name: Run Gradle on PRs
-on: pull-request
+on: pull_request
 jobs:
   gradle:
     strategy:
@@ -138,16 +174,24 @@ jobs:
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: actions/setup-java@v1
       with:
         java-version: 11
-    - uses: eskatos/gradle-command-action@v1
+    - uses: gradle/gradle-build-action@v1
       with:
         arguments: build
       id: gradle
-    - uses: example/action-that-comments-on-the-pr@v0
-      if: failure()
+    - name: "Comment build scan url"
+      uses: actions/github-script@v3
+      if: github.event_name == 'pull_request' && failure()
       with:
-        comment: Build failed ${{ steps.gradle.outputs.build-scan-url }}
+        github-token: ${{secrets.GITHUB_TOKEN}}
+        script: |
+          github.issues.createComment({
+            issue_number: context.issue.number,
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            body: '❌ ${{ github.workflow }} failed: ${{ steps.gradle.outputs.build-scan-url }}'
+          })
 ```

__tests__/cache-utils.test.ts

@@ -0,0 +1,15 @@
+import * as cacheUtils from '../src/cache-utils'
+import * as path from 'path'
+
+describe('cacheUtils-utils', () => {
+    describe('can hash', () => {
+        it('a string', async () => {
+            const hash = cacheUtils.hashStrings(['foo'])
+            expect(hash).toBe('acbd18db4cc2f85cedef654fccc4a4d8')
+        })
+        it('multiple strings', async () => {
+            const hash = cacheUtils.hashStrings(['foo', 'bar', 'baz'])
+            expect(hash).toBe('6df23dc03f9b54cc38a0fc1483df6e21')
+        })
+    })
+})

__tests__/data/cache-wrapper-test/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

__tests__/data/crypto-utils-test/.gitattributes

@@ -0,0 +1,6 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# These are explicitly windows files and should use crlf
+*.bat           text eol=crlf
+

__tests__/data/crypto-utils-test/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

__tests__/data/crypto-utils-test/build.gradle

@@ -0,0 +1,11 @@
+plugins {
+    id 'java'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation('junit:junit:4.12')
+}

__tests__/data/crypto-utils-test/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

__tests__/data/crypto-utils-test/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

__tests__/data/crypto-utils-test/gradlew.bat

@@ -0,0 +1,104 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

__tests__/data/crypto-utils-test/settings.gradle

@@ -0,0 +1,10 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * The settings file is used to specify which projects to include in your build.
+ *
+ * Detailed information about configuring a multi-project build in Gradle can be found
+ * in the user manual at https://docs.gradle.org/6.5/userguide/multi_project_builds.html
+ */
+
+rootProject.name = 'basic'

__tests__/data/crypto-utils-test/src/test/java/basic/BasicTest.java

@@ -0,0 +1,10 @@
+package basic;
+
+import org.junit.Test;
+
+public class BasicTest {
+    @Test
+    public void test() {
+        assert true;
+    }
+}

__tests__/main.test.ts

@@ -1,3 +0,0 @@
-describe('TODO - Add a test suite', () => {
-  it('TODO - Add a test', async () => {});
-});

__tests__/samples/basic/.gitattributes

@@ -0,0 +1,6 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# These are explicitly windows files and should use crlf
+*.bat           text eol=crlf
+

__tests__/samples/basic/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

__tests__/samples/basic/build.gradle

@@ -0,0 +1,23 @@
+plugins {
+    id 'java'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation('junit:junit:4.12')
+}
+
+tasks.named("test").configure {
+    // Use an environment variable to bypass config-cache checks
+    if (System.getenv('VERIFY_CACHED_CONFIGURATION') != null) {
+        throw new RuntimeException("Configuration was not cached: unexpected configuration of test task")
+    }
+    doLast {
+        if (System.properties.verifyCachedBuild) {
+            throw new RuntimeException("Build was not cached: unexpected execution of test task")
+        }
+    }
+}

__tests__/samples/basic/gradle.properties

@@ -0,0 +1 @@
+org.gradle.caching=true

__tests__/samples/basic/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

__tests__/samples/basic/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

__tests__/samples/basic/gradlew.bat

@@ -0,0 +1,104 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

__tests__/samples/basic/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'basic'

__tests__/samples/basic/src/test/java/basic/BasicTest.java

@@ -0,0 +1,10 @@
+package basic;
+
+import org.junit.Test;
+
+public class BasicTest {
+    @Test
+    public void test() {
+        assert true;
+    }
+}

__tests__/samples/kotlin-dsl/.gitattributes

@@ -0,0 +1,6 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# These are explicitly windows files and should use crlf
+*.bat           text eol=crlf
+

__tests__/samples/kotlin-dsl/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

__tests__/samples/kotlin-dsl/build.gradle.kts

@@ -0,0 +1,18 @@
+plugins {
+    `java-library`
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    api("org.apache.commons:commons-math3:3.6.1")
+    implementation("com.google.guava:guava:30.1.1-jre")
+
+    testImplementation("org.junit.jupiter:junit-jupiter:5.7.2")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}

__tests__/samples/kotlin-dsl/gradle.properties

@@ -0,0 +1 @@
+org.gradle.caching=true

__tests__/samples/kotlin-dsl/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

__tests__/samples/kotlin-dsl/gradlew

@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

__tests__/samples/kotlin-dsl/gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

__tests__/samples/kotlin-dsl/settings.gradle.kts

@@ -0,0 +1,15 @@
+plugins {
+    id("com.gradle.enterprise") version("3.6.4")
+}
+
+gradleEnterprise {
+    buildScan {
+        termsOfServiceUrl = "https://gradle.com/terms-of-service"
+        termsOfServiceAgree = "yes"
+        publishAlways()
+        isUploadInBackground = false
+    }
+}
+
+rootProject.name = "kotlin-dsl"
+

__tests__/samples/kotlin-dsl/src/main/java/com/example/Library.java

@@ -0,0 +1,10 @@
+/*
+ * This Java source file was generated by the Gradle 'init' task.
+ */
+package com.example;
+
+public class Library {
+    public boolean someLibraryMethod() {
+        return true;
+    }
+}

__tests__/samples/kotlin-dsl/src/test/java/com/example/LibraryTest.java

@@ -0,0 +1,14 @@
+/*
+ * This Java source file was generated by the Gradle 'init' task.
+ */
+package com.example;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+class LibraryTest {
+    @Test void someLibraryMethodReturnsTrue() {
+        Library classUnderTest = new Library();
+        assertTrue(classUnderTest.someLibraryMethod(), "someLibraryMethod should return 'true'");
+    }
+}

__tests__/samples/no-wrapper/.gitattributes

@@ -0,0 +1,6 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# These are explicitly windows files and should use crlf
+*.bat           text eol=crlf
+

__tests__/samples/no-wrapper/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

__tests__/samples/no-wrapper/settings.gradle

@@ -0,0 +1,8 @@
+rootProject.name = 'no-wrapper'
+
+println "Using Gradle version: ${gradle.gradleVersion}"
+
+def gradleVersionCheck = System.properties.gradleVersionCheck
+if (gradleVersionCheck && gradle.gradleVersion != gradleVersionCheck) {
+    throw new RuntimeException("Got the wrong version: expected ${gradleVersionCheck} but was ${gradle.gradleVersion}")
+}

action.yml

@@ -1,13 +1,9 @@
-name: "Gradle Command"
-description: 'Execute Gradle Command Line'
-author: 'Paul Merlin <paul@nospere.org>'
+name: "Gradle Build Action"
+description: 'Executes a Gradle build, caching useful state in the GitHub actions cache'
 
 # https://help.github.com/en/articles/metadata-syntax-for-github-actions
 
 inputs:
-  wrapper-directory:
-    description: Path to the Gradle Wrapper directory
-    required: false
   gradle-executable:
     description: Path to the Gradle executable
     required: false
@@ -20,6 +16,20 @@ inputs:
   arguments:
     description: Gradle command line arguments, see gradle --help
     required: false
+  cache-disabled:
+    description: When 'true', all caching is disabled. No entries will be written to or read from the cache.
+    required: false
+    default: false
+  cache-read-only:
+    description: When 'true', existing entries will be read from the cache but no entries will be written
+    required: false
+    # TODO: It might be useful to default to read-only for PRs, or non-main branch.
+    default: false 
+  
+  workflow-job-context:
+    description: Used to uniquely identify the current job invocation. Defaults to the matrix values for this job; this should not be overridden by users.
+    required: false
+    default: ${{ toJSON(matrix) }}
 
 outputs:
   build-scan-url:
@@ -27,7 +37,9 @@ outputs:
 
 runs:
   using: 'node12'
-  main: 'lib/main.js'
+  main: 'dist/main/index.js'
+  post: 'dist/post/index.js'
+  post-if: success()
 
 branding:
   icon: 'box'

jest.config.js

@@ -1,11 +1,12 @@
 module.exports = {
   clearMocks: true,
-  moduleFileExtensions: ['js', 'ts'],
+  moduleFileExtensions: ['js', 'ts', 'json'],
   testEnvironment: 'node',
   testMatch: ['**/*.test.ts'],
   testRunner: 'jest-circus/runner',
   transform: {
     '^.+\\.ts$': 'ts-jest'
   },
-  verbose: true
-}
+  verbose: true,
+  setupFilesAfterEnv: ['./jest.setup.js']
+}

jest.setup.js

@@ -0,0 +1 @@
+jest.setTimeout(10000) // in milliseconds

package.json

@@ -1,15 +1,19 @@
 {
-  "name": "gradle-command-action",
+  "name": "gradle-build-action",
   "version": "1.0.0",
-  "description": "Execute Gradle Command Line",
-  "main": "lib/main.js",
+  "private": true,
+  "description": "Execute Gradle Build",
   "scripts": {
-    "build": "tsc",
-    "test": "jest"
+    "format": "prettier --write **/*.ts",
+    "format-check": "prettier --check **/*.ts",
+    "lint": "eslint src/**/*.ts",
+    "build": "ncc build src/main.ts --out dist/main --source-map --minify && ncc build src/post.ts --out dist/post --source-map --minify",
+    "test": "jest",
+    "all": "npm run format && npm run lint && npm run build && npm test"
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/eskatos/gradle-command-action.git"
+    "url": "git+https://github.com/gradle/gradle-build-action.git"
   },
   "keywords": [
     "github",
@@ -20,21 +24,29 @@
   "author": "Paul Merlin <paul@nosphere.org>",
   "license": "MIT",
   "dependencies": {
-    "@actions/core": "1.1.1",
-    "@actions/exec": "1.0.1",
-    "@actions/io": "1.0.1",
-    "@actions/tool-cache": "1.1.1",
-    "string-argv": "0.3.1",
-    "typed-rest-client": "1.5.0",
-    "unzipper": "0.10.5"
+    "@actions/cache": "1.0.7",
+    "@actions/core": "1.5.0",
+    "@actions/exec": "1.1.0",
+    "@actions/github": "5.0.0",
+    "@actions/glob": "0.2.0",
+    "@actions/http-client": "1.0.11",
+    "@actions/tool-cache": "1.7.1",
+    "string-argv": "0.3.1"
   },
   "devDependencies": {
-    "@types/jest": "24.0.18",
-    "@types/node": "12.7.5",
-    "@types/unzipper": "0.10.0",
-    "jest": "24.9.0",
-    "jest-circus": "24.9.0",
-    "ts-jest": "24.1.0",
-    "typescript": "3.6.3"
+    "@types/jest": "26.0.23",
+    "@types/node": "14.17.3",
+    "@types/unzipper": "0.10.4",
+    "@typescript-eslint/parser": "4.28.2",
+    "@zeit/ncc": "0.22.3",
+    "eslint": "7.30.0",
+    "eslint-plugin-github": "4.1.3",
+    "eslint-plugin-jest": "24.3.6",
+    "jest": "26.6.3",
+    "jest-circus": "26.6.3",
+    "js-yaml": "3.14.1",
+    "prettier": "2.3.2",
+    "ts-jest": "26.5.6",
+    "typescript": "4.3.5"
   }
 }

src/cache-gradle-user-home.ts

@@ -0,0 +1,192 @@
+import path from 'path'
+import fs from 'fs'
+import os from 'os'
+import * as core from '@actions/core'
+import * as glob from '@actions/glob'
+import * as exec from '@actions/exec'
+
+import {AbstractCache, hashStrings} from './cache-utils'
+
+// Which paths under Gradle User Home should be cached
+// TODO: This should adapt for the `GRADLE_USER_HOME` environment variable
+// TODO: Allow the user to override / tweak this set
+const CACHE_PATH = ['~/.gradle/caches', '~/.gradle/notifications']
+
+const COMMON_ARTIFACT_CACHES = new Map([
+    ['generated-gradle-jars', '~/.gradle/caches/*/generated-gradle-jars/*.jar'],
+    ['wrapper-zips', '~/.gradle/wrapper/dists/*/*/*.zip'],
+    ['dependency-jars', '~/.gradle/caches/modules-*/files-*/**/*.jar'],
+    ['instrumented-jars', '~/.gradle/caches/jars-*/*/*.jar']
+])
+
+export class GradleUserHomeCache extends AbstractCache {
+    constructor() {
+        super('gradle', 'Gradle User Home')
+    }
+
+    async afterRestore(): Promise<void> {
+        await this.reportCacheEntrySize('as restored from cache')
+        await this.restoreCommonArtifacts()
+        await this.reportCacheEntrySize('after restoring common artifacts')
+    }
+
+    private async restoreCommonArtifacts(): Promise<void> {
+        const processes: Promise<void>[] = []
+        for (const [bundle, pattern] of COMMON_ARTIFACT_CACHES) {
+            const p = this.restoreCommonArtifactBundle(bundle, pattern)
+            // Run sequentially when debugging enabled
+            if (this.cacheDebuggingEnabled) {
+                await p
+            }
+            processes.push(p)
+        }
+
+        await Promise.all(processes)
+    }
+
+    private async restoreCommonArtifactBundle(
+        bundle: string,
+        pattern: string
+    ): Promise<void> {
+        const cacheMetaFile = this.getCacheMetaFile(bundle)
+        if (fs.existsSync(cacheMetaFile)) {
+            const cacheKey = fs.readFileSync(cacheMetaFile, 'utf-8').trim()
+            const restoreKey = await this.restoreCache([pattern], cacheKey)
+            if (restoreKey) {
+                core.info(
+                    `Restored ${bundle} with key ${cacheKey} to ${pattern}`
+                )
+            } else {
+                this.debug(
+                    `Failed to restore ${bundle} with key ${cacheKey} to ${pattern}`
+                )
+            }
+        } else {
+            this.debug(
+                `No metafile found to restore ${bundle}: ${cacheMetaFile}`
+            )
+        }
+    }
+
+    private getCacheMetaFile(name: string): string {
+        return path.resolve(
+            this.getGradleUserHome(),
+            'caches',
+            `.gradle-build-action.${name}.cache`
+        )
+    }
+
+    private async reportCacheEntrySize(label: string): Promise<void> {
+        if (!this.cacheDebuggingEnabled) {
+            return
+        }
+        const gradleUserHome = path.resolve(os.homedir(), '.gradle')
+        if (!fs.existsSync(gradleUserHome)) {
+            return
+        }
+        const result = await exec.getExecOutput(
+            'du',
+            ['-h', '-c', '-t', '5M'],
+            {
+                cwd: gradleUserHome,
+                silent: true,
+                ignoreReturnCode: true
+            }
+        )
+
+        core.info(`Gradle User Home cache entry (directories >5M): ${label}`)
+
+        core.info(
+            result.stdout
+                .trimEnd()
+                .replace(/\t/g, '    ')
+                .split('\n')
+                .map(it => {
+                    return `  ${it}`
+                })
+                .join('\n')
+        )
+
+        core.info('-----------------------')
+    }
+
+    async beforeSave(): Promise<void> {
+        await this.saveCommonArtifacts()
+    }
+
+    private async saveCommonArtifacts(): Promise<void> {
+        const processes: Promise<void>[] = []
+        for (const [bundle, pattern] of COMMON_ARTIFACT_CACHES) {
+            const p = this.saveCommonArtifactBundle(bundle, pattern)
+            // Run sequentially when debugging enabled
+            if (this.cacheDebuggingEnabled) {
+                await p
+            }
+            processes.push(p)
+        }
+
+        await Promise.all(processes)
+    }
+
+    private async saveCommonArtifactBundle(
+        bundle: string,
+        pattern: string
+    ): Promise<void> {
+        const cacheMetaFile = this.getCacheMetaFile(bundle)
+
+        const globber = await glob.create(pattern)
+        const commonArtifactFiles = await globber.glob()
+
+        // Handle no matching files
+        if (commonArtifactFiles.length === 0) {
+            this.debug(`No files found to cache for ${bundle}`)
+            if (fs.existsSync(cacheMetaFile)) {
+                fs.unlinkSync(cacheMetaFile)
+            }
+            return
+        }
+
+        const previouslyRestoredKey = fs.existsSync(cacheMetaFile)
+            ? fs.readFileSync(cacheMetaFile, 'utf-8').trim()
+            : ''
+        const cacheKey = this.createCacheKey(
+            bundle,
+            hashStrings(commonArtifactFiles)
+        )
+
+        if (previouslyRestoredKey === cacheKey) {
+            this.debug(
+                `No change to previously restored ${bundle}. Not caching.`
+            )
+        } else {
+            core.info(`Caching ${bundle} with cache key: ${cacheKey}`)
+            await this.saveCache([pattern], cacheKey)
+
+            this.debug(`Writing cache metafile: ${cacheMetaFile}`)
+            fs.writeFileSync(cacheMetaFile, cacheKey)
+        }
+
+        for (const file of commonArtifactFiles) {
+            fs.unlinkSync(file)
+        }
+    }
+
+    protected createCacheKey(bundle: string, key: string): string {
+        const cacheKeyPrefix = process.env['CACHE_KEY_PREFIX'] || ''
+        return `${cacheKeyPrefix}${bundle}-${key}`
+    }
+
+    protected getGradleUserHome(): string {
+        return path.resolve(os.homedir(), '.gradle')
+    }
+
+    protected cacheOutputExists(): boolean {
+        // Need to check for 'caches' directory to avoid incorrect detection on MacOS agents
+        const dir = path.resolve(this.getGradleUserHome(), 'caches')
+        return fs.existsSync(dir)
+    }
+
+    protected getCachePath(): string[] {
+        return CACHE_PATH
+    }
+}

src/cache-project-dot-gradle.ts

@@ -0,0 +1,30 @@
+import path from 'path'
+import fs from 'fs'
+import {AbstractCache} from './cache-utils'
+
+// TODO: Maybe allow the user to override / tweak this set
+const PATHS_TO_CACHE = [
+    'configuration-cache' // Only configuration-cache is stored at present
+]
+
+export class ProjectDotGradleCache extends AbstractCache {
+    private rootDir: string
+    constructor(rootDir: string) {
+        super('project', 'Project .gradle directory')
+        this.rootDir = rootDir
+    }
+
+    protected cacheOutputExists(): boolean {
+        const dir = this.getProjectDotGradleDir()
+        return fs.existsSync(dir)
+    }
+
+    protected getCachePath(): string[] {
+        const dir = this.getProjectDotGradleDir()
+        return PATHS_TO_CACHE.map(x => path.resolve(dir, x))
+    }
+
+    private getProjectDotGradleDir(): string {
+        return path.resolve(this.rootDir, '.gradle')
+    }
+}

src/cache-utils.ts

@@ -0,0 +1,208 @@
+import * as core from '@actions/core'
+import * as cache from '@actions/cache'
+import * as github from '@actions/github'
+import * as crypto from 'crypto'
+
+export function isCacheDisabled(): boolean {
+    return core.getBooleanInput('cache-disabled')
+}
+
+export function isCacheReadOnly(): boolean {
+    return core.getBooleanInput('cache-read-only')
+}
+
+export function isCacheDebuggingEnabled(): boolean {
+    return process.env['CACHE_DEBUG_ENABLED'] ? true : false
+}
+
+function generateCacheKey(cacheName: string): CacheKey {
+    // Prefix can be used to force change all cache keys
+    const cacheKeyPrefix = process.env['CACHE_KEY_PREFIX'] || ''
+
+    // At the most general level, share caches for all executions on the same OS
+    const runnerOs = process.env['RUNNER_OS'] || ''
+    const cacheKeyForOs = `${cacheKeyPrefix}${cacheName}|${runnerOs}`
+
+    // Prefer caches that run this job
+    const cacheKeyForJob = `${cacheKeyForOs}|${github.context.job}`
+
+    // Prefer (even more) jobs that run this job with the same context (matrix)
+    const cacheKeyForJobContext = `${cacheKeyForJob}[${determineJobContext()}]`
+
+    // Exact match on Git SHA
+    const cacheKey = `${cacheKeyForJobContext}-${github.context.sha}`
+
+    return new CacheKey(cacheKey, [
+        cacheKeyForJobContext,
+        cacheKeyForJob,
+        cacheKeyForOs
+    ])
+}
+
+function determineJobContext(): string {
+    // By default, we hash the full `matrix` data for the run, to uniquely identify this job invocation
+    const workflowJobContext = core.getInput('workflow-job-context')
+    return hashStrings([workflowJobContext])
+}
+
+export function hashStrings(values: string[]): string {
+    const hash = crypto.createHash('md5')
+    for (const value of values) {
+        hash.update(value)
+    }
+    return hash.digest('hex')
+}
+
+class CacheKey {
+    key: string
+    restoreKeys: string[]
+
+    constructor(key: string, restoreKeys: string[]) {
+        this.key = key
+        this.restoreKeys = restoreKeys
+    }
+}
+
+export abstract class AbstractCache {
+    private cacheName: string
+    private cacheDescription: string
+    private cacheKeyStateKey: string
+    private cacheResultStateKey: string
+
+    protected readonly cacheDebuggingEnabled: boolean
+
+    constructor(cacheName: string, cacheDescription: string) {
+        this.cacheName = cacheName
+        this.cacheDescription = cacheDescription
+        this.cacheKeyStateKey = `CACHE_KEY_${cacheName}`
+        this.cacheResultStateKey = `CACHE_RESULT_${cacheName}`
+        this.cacheDebuggingEnabled = isCacheDebuggingEnabled()
+    }
+
+    async restore(): Promise<void> {
+        if (this.cacheOutputExists()) {
+            core.info(
+                `${this.cacheDescription} already exists. Not restoring from cache.`
+            )
+            return
+        }
+
+        const cacheKey = generateCacheKey(this.cacheName)
+
+        core.saveState(this.cacheKeyStateKey, cacheKey.key)
+
+        const cacheResult = await this.restoreCache(
+            this.getCachePath(),
+            cacheKey.key,
+            cacheKey.restoreKeys
+        )
+
+        if (!cacheResult) {
+            core.info(
+                `${this.cacheDescription} cache not found. Will start with empty.`
+            )
+            return
+        }
+
+        core.saveState(this.cacheResultStateKey, cacheResult)
+
+        core.info(
+            `Restored ${this.cacheDescription} from cache key: ${cacheResult}`
+        )
+
+        await this.afterRestore()
+
+        return
+    }
+
+    protected async restoreCache(
+        cachePath: string[],
+        cacheKey: string,
+        cacheRestoreKeys: string[] = []
+    ): Promise<string | undefined> {
+        try {
+            return await cache.restoreCache(
+                cachePath,
+                cacheKey,
+                cacheRestoreKeys
+            )
+        } catch (error) {
+            if (error instanceof cache.ValidationError) {
+                // Validation errors should fail the build action
+                throw error
+            }
+            // Warn about any other error and continue
+            core.warning(`Failed to restore ${cacheKey}: ${error}`)
+            return undefined
+        }
+    }
+
+    protected async afterRestore(): Promise<void> {}
+
+    async save(): Promise<void> {
+        if (!this.cacheOutputExists()) {
+            this.debug(`No ${this.cacheDescription} to cache.`)
+            return
+        }
+
+        const cacheKey = core.getState(this.cacheKeyStateKey)
+        const cacheResult = core.getState(this.cacheResultStateKey)
+
+        if (!cacheKey) {
+            this.debug(
+                `${this.cacheDescription} existed prior to cache restore. Not saving.`
+            )
+            return
+        }
+
+        if (cacheResult && cacheKey === cacheResult) {
+            core.info(
+                `Cache hit occurred on the cache key ${cacheKey}, not saving cache.`
+            )
+            return
+        }
+
+        await this.beforeSave()
+
+        core.info(
+            `Caching ${this.cacheDescription} with cache key: ${cacheKey}`
+        )
+        const cachePath = this.getCachePath()
+        await this.saveCache(cachePath, cacheKey)
+
+        return
+    }
+
+    protected async beforeSave(): Promise<void> {}
+
+    protected async saveCache(
+        cachePath: string[],
+        cacheKey: string
+    ): Promise<void> {
+        try {
+            await cache.saveCache(cachePath, cacheKey)
+        } catch (error) {
+            if (error instanceof cache.ValidationError) {
+                // Validation errors should fail the build action
+                throw error
+            } else if (error instanceof cache.ReserveCacheError) {
+                // Reserve cache errors are expected if the artifact has been previously cached
+                this.debug(error.message)
+            } else {
+                // Warn about any other error and continue
+                core.warning(String(error))
+            }
+        }
+    }
+
+    protected debug(message: string): void {
+        if (this.cacheDebuggingEnabled) {
+            core.info(message)
+        } else {
+            core.debug(message)
+        }
+    }
+
+    protected abstract cacheOutputExists(): boolean
+    protected abstract getCachePath(): string[]
+}

src/caches.ts

@@ -0,0 +1,36 @@
+import {GradleUserHomeCache} from './cache-gradle-user-home'
+import {ProjectDotGradleCache} from './cache-project-dot-gradle'
+import * as core from '@actions/core'
+import {isCacheDisabled, isCacheReadOnly} from './cache-utils'
+
+const BUILD_ROOT_DIR = 'BUILD_ROOT_DIR'
+
+export async function restore(buildRootDirectory: string): Promise<void> {
+    if (isCacheDisabled()) {
+        core.debug('Cache read disabled')
+        return
+    }
+
+    await core.group('Restore Gradle state from cache', async () => {
+        core.saveState(BUILD_ROOT_DIR, buildRootDirectory)
+        return Promise.all([
+            new GradleUserHomeCache().restore(),
+            new ProjectDotGradleCache(buildRootDirectory).restore()
+        ])
+    })
+}
+
+export async function save(): Promise<void> {
+    if (isCacheReadOnly()) {
+        core.debug('Cache is read-only: not saving cache entry')
+        return
+    }
+
+    await core.group('Caching Gradle state', async () => {
+        const buildRootDirectory = core.getState(BUILD_ROOT_DIR)
+        return Promise.all([
+            new GradleUserHomeCache().save(),
+            new ProjectDotGradleCache(buildRootDirectory).save()
+        ])
+    })
+}

src/execution.ts

@@ -1,31 +1,30 @@
-import * as exec from "@actions/exec";
+import * as exec from '@actions/exec'
 
-
-export async function execute(executable: string, root: string, argv: string[]): Promise<BuildResult> {
-
-    let publishing = false;
-    let buildScanUrl: string | undefined;
+export async function execute(
+    executable: string,
+    root: string,
+    argv: string[]
+): Promise<BuildResult> {
+    let publishing = false
+    let buildScanUrl: string | undefined
 
     const status: number = await exec.exec(executable, argv, {
         cwd: root,
         ignoreReturnCode: true,
         listeners: {
             stdline: (line: string) => {
-                if (line.startsWith("Publishing build scan...")) {
-                    publishing = true;
+                if (line.includes('Publishing build scan...')) {
+                    publishing = true
                 }
-                if (publishing && line.length == 0) {
-                    publishing = false
-                }
-                if (publishing && line.startsWith("http")) {
-                    buildScanUrl = line.trim();
+                if (publishing && line.startsWith('http')) {
+                    buildScanUrl = line.trim()
                     publishing = false
                 }
             }
         }
-    });
+    })
 
-    return new BuildResultImpl(status, buildScanUrl);
+    return new BuildResultImpl(status, buildScanUrl)
 }
 
 export interface BuildResult {
@@ -34,9 +33,5 @@ export interface BuildResult {
 }
 
 class BuildResultImpl implements BuildResult {
-    constructor(
-        readonly status: number,
-        readonly buildScanUrl?: string
-    ) {
-    }
+    constructor(readonly status: number, readonly buildScanUrl?: string) {}
 }

src/gradlew.ts

@@ -1,11 +1,29 @@
-const IS_WINDOWS = process.platform === "win32";
+import * as path from 'path'
+import fs from 'fs'
 
+const IS_WINDOWS = process.platform === 'win32'
 
-export function wrapperFilename(): string {
-    return IS_WINDOWS ? "gradlew.bat" : "gradlew";
+export function wrapperScriptFilename(): string {
+    return IS_WINDOWS ? 'gradlew.bat' : 'gradlew'
 }
 
-
 export function installScriptFilename(): string {
-    return IS_WINDOWS ? "gradle.bat" : "gradle";
+    return IS_WINDOWS ? 'gradle.bat' : 'gradle'
+}
+
+export function locateGradleWrapperScript(buildRootDirectory: string): string {
+    validateGradleWrapper(buildRootDirectory)
+    return path.resolve(buildRootDirectory, wrapperScriptFilename())
+}
+
+function validateGradleWrapper(buildRootDirectory: string): void {
+    const wrapperProperties = path.resolve(
+        buildRootDirectory,
+        'gradle/wrapper/gradle-wrapper.properties'
+    )
+    if (!fs.existsSync(wrapperProperties)) {
+        throw new Error(
+            `Cannot locate a Gradle wrapper properties file at '${wrapperProperties}'. Specify 'gradle-version' or 'gradle-executable' for projects without Gradle wrapper configured.`
+        )
+    }
 }

src/main.ts

@@ -1,80 +1,80 @@
-import * as core from "@actions/core";
-import * as path from "path";
-import {parseArgsStringToArgv} from "string-argv";
+import * as core from '@actions/core'
+import * as path from 'path'
+import {parseArgsStringToArgv} from 'string-argv'
 
-import * as execution from "./execution";
-import * as gradlew from "./gradlew";
-import * as provision from "./provision";
+import * as caches from './caches'
+import * as execution from './execution'
+import * as gradlew from './gradlew'
+import * as provision from './provision'
 
-
-// Invoked by Github Actions
-export async function run() {
+// Invoked by GitHub Actions
+export async function run(): Promise<void> {
     try {
+        const workspaceDirectory = process.env[`GITHUB_WORKSPACE`] || ''
+        const buildRootDirectory = resolveBuildRootDirectory(workspaceDirectory)
 
-        const baseDirectory = process.env[`GITHUB_WORKSPACE`] || "";
+        await caches.restore(buildRootDirectory)
 
-        let result = await execution.execute(
-            await resolveGradleExecutable(baseDirectory),
-            resolveBuildRootDirectory(baseDirectory),
-            parseCommandLineArguments()
-        );
+        const args: string[] = parseCommandLineArguments()
+        // TODO: instead of running with no-daemon, run `--stop` in post action.
+        args.push('--no-daemon')
+
+        const result = await execution.execute(
+            await resolveGradleExecutable(
+                workspaceDirectory,
+                buildRootDirectory
+            ),
+            buildRootDirectory,
+            args
+        )
 
         if (result.buildScanUrl) {
-            core.setOutput("build-scan-url", result.buildScanUrl);
+            core.setOutput('build-scan-url', result.buildScanUrl)
+            // TODO Include context about the invocation (eg step name) in this message
+            // Unfortunately it doesn't seem possible to access the current step name here
+            core.notice(`Gradle build scan: ${result.buildScanUrl}`)
         }
 
-        if (result.status != 0) {
+        if (result.status !== 0) {
             core.setFailed(`Gradle process exited with status ${result.status}`)
         }
-
     } catch (error) {
-        core.setFailed(error.message);
+        core.setFailed(String(error))
+        if (error instanceof Error && error.stack) {
+            core.info(error.stack)
+        }
     }
 }
 
+run()
 
-run();
-
-
-async function resolveGradleExecutable(baseDirectory: string): Promise<string> {
-
-    const gradleVersion = inputOrNull("gradle-version");
-    if (gradleVersion != null) {
+async function resolveGradleExecutable(
+    workspaceDirectory: string,
+    buildRootDirectory: string
+): Promise<string> {
+    const gradleVersion = core.getInput('gradle-version')
+    if (gradleVersion !== '' && gradleVersion !== 'wrapper') {
         return path.resolve(await provision.gradleVersion(gradleVersion))
     }
 
-    const gradleExecutable = inputOrNull("gradle-executable");
-    if (gradleExecutable != null) {
-        return path.resolve(baseDirectory, gradleExecutable)
+    const gradleExecutable = core.getInput('gradle-executable')
+    if (gradleExecutable !== '') {
+        return path.resolve(workspaceDirectory, gradleExecutable)
     }
 
-    const wrapperDirectory = inputOrNull("wrapper-directory");
-    const executableDirectory = wrapperDirectory != null
-        ? path.join(baseDirectory, wrapperDirectory)
-        : baseDirectory;
-
-    return path.resolve(executableDirectory, gradlew.wrapperFilename());
+    return gradlew.locateGradleWrapperScript(buildRootDirectory)
 }
 
-
 function resolveBuildRootDirectory(baseDirectory: string): string {
-    let buildRootDirectory = inputOrNull("build-root-directory");
-    return buildRootDirectory == null
-        ? path.resolve(baseDirectory)
-        : path.resolve(baseDirectory, buildRootDirectory);
+    const buildRootDirectory = core.getInput('build-root-directory')
+    const resolvedBuildRootDirectory =
+        buildRootDirectory === ''
+            ? path.resolve(baseDirectory)
+            : path.resolve(baseDirectory, buildRootDirectory)
+    return resolvedBuildRootDirectory
 }
 
-
 function parseCommandLineArguments(): string[] {
-    const input = inputOrNull("arguments");
-    return input == null ? [] : parseArgsStringToArgv(input)
-}
-
-
-function inputOrNull(name: string): string | null {
-    const inputString = core.getInput(name);
-    if (inputString.length == 0) {
-        return null;
-    }
-    return inputString
+    const input = core.getInput('arguments')
+    return parseArgsStringToArgv(input)
 }

src/post.ts

@@ -0,0 +1,16 @@
+import * as core from '@actions/core'
+import * as caches from './caches'
+
+// Invoked by GitHub Actions
+export async function run(): Promise<void> {
+    try {
+        await caches.save()
+    } catch (error) {
+        core.setFailed(String(error))
+        if (error instanceof Error && error.stack) {
+            core.info(error.stack)
+        }
+    }
+}
+
+run()

src/provision.ts

@@ -1,163 +1,201 @@
-import * as fs from "fs";
-import * as path from "path";
-import * as httpm from 'typed-rest-client/HttpClient';
-import * as unzip from "unzipper"
-import * as core from "@actions/core";
-import * as io from '@actions/io';
-import * as toolCache from "@actions/tool-cache";
+import * as fs from 'fs'
+import * as os from 'os'
+import * as path from 'path'
+import * as httpm from '@actions/http-client'
+import * as core from '@actions/core'
+import * as cache from '@actions/cache'
+import * as toolCache from '@actions/tool-cache'
 
-import * as gradlew from "./gradlew";
-
-
-const httpc = new httpm.HttpClient("eskatos/gradle-command-action");
-const gradleVersionsBaseUrl = "https://services.gradle.org/versions";
+import * as gradlew from './gradlew'
+import {isCacheDisabled, isCacheReadOnly} from './cache-utils'
 
+const gradleVersionsBaseUrl = 'https://services.gradle.org/versions'
 
 /**
  * @return Gradle executable path
  */
-export async function gradleVersion(gradleVersion: string): Promise<string> {
-    switch (gradleVersion) {
-        case "current":
-            return gradleCurrent();
-        case "rc":
-            return gradleReleaseCandidate();
-        case "nightly":
-            return gradleNightly();
-        case "release-nightly":
-            return gradleReleaseNightly();
+export async function gradleVersion(version: string): Promise<string> {
+    switch (version) {
+        case 'current':
+            return gradleCurrent()
+        case 'rc':
+            core.warning(
+                `Specifying gradle-version 'rc' has been deprecated. Use 'release-candidate' instead.`
+            )
+            return gradleReleaseCandidate()
+        case 'release-candidate':
+            return gradleReleaseCandidate()
+        case 'nightly':
+            return gradleNightly()
+        case 'release-nightly':
+            return gradleReleaseNightly()
         default:
-            return gradle(gradleVersion);
+            return gradle(version)
     }
 }
 
-
 async function gradleCurrent(): Promise<string> {
-    const json = await gradleVersionDeclaration(`${gradleVersionsBaseUrl}/current`);
-    return provisionGradle(json.version, json.downloadUrl);
+    const versionInfo = await gradleVersionDeclaration(
+        `${gradleVersionsBaseUrl}/current`
+    )
+    return provisionGradle(versionInfo)
 }
 
-
 async function gradleReleaseCandidate(): Promise<string> {
-    const json = await gradleVersionDeclaration(`${gradleVersionsBaseUrl}/release-candidate`);
-    if (json) {
-        return provisionGradle(json.version, json.downloadUrl);
+    const versionInfo = await gradleVersionDeclaration(
+        `${gradleVersionsBaseUrl}/release-candidate`
+    )
+    if (versionInfo && versionInfo.version && versionInfo.downloadUrl) {
+        return provisionGradle(versionInfo)
     }
-    return gradleCurrent();
+    core.info('No current release-candidate found, will fallback to current')
+    return gradleCurrent()
 }
 
-
 async function gradleNightly(): Promise<string> {
-    const json = await gradleVersionDeclaration(`${gradleVersionsBaseUrl}/nightly`);
-    return provisionGradle(json.version, json.downloadUrl);
+    const versionInfo = await gradleVersionDeclaration(
+        `${gradleVersionsBaseUrl}/nightly`
+    )
+    return provisionGradle(versionInfo)
 }
 
-
 async function gradleReleaseNightly(): Promise<string> {
-    const json = await gradleVersionDeclaration(`${gradleVersionsBaseUrl}/release-nightly`);
-    return provisionGradle(json.version, json.downloadUrl);
+    const versionInfo = await gradleVersionDeclaration(
+        `${gradleVersionsBaseUrl}/release-nightly`
+    )
+    return provisionGradle(versionInfo)
 }
 
-
 async function gradle(version: string): Promise<string> {
-    const declaration = await findGradleVersionDeclaration(version);
-    if (!declaration) {
-        throw new Error(`Gradle version ${version} does not exists`);
+    const versionInfo = await findGradleVersionDeclaration(version)
+    if (!versionInfo) {
+        throw new Error(`Gradle version ${version} does not exists`)
     }
-    return provisionGradle(declaration.version, declaration.downloadUrl);
+    return provisionGradle(versionInfo)
 }
 
-
-async function gradleVersionDeclaration(url: string): Promise<any | undefined> {
-    const json: any = await httpGetJson(url);
-    return (json.version && json.version.length > 0) ? json : undefined
+async function gradleVersionDeclaration(
+    url: string
+): Promise<GradleVersionInfo> {
+    return await httpGetGradleVersion(url)
 }
 
-
-async function findGradleVersionDeclaration(version: string): Promise<any | undefined> {
-    const json: any = await httpGetJson(`${gradleVersionsBaseUrl}/all`);
-    const found: any = json.find((entry: any) => {
-        return entry.version === version;
-    });
-    return found ? found : undefined
+async function findGradleVersionDeclaration(
+    version: string
+): Promise<GradleVersionInfo | undefined> {
+    const gradleVersions = await httpGetGradleVersions(
+        `${gradleVersionsBaseUrl}/all`
+    )
+    return gradleVersions.find((entry: GradleVersionInfo) => {
+        return entry.version === version
+    })
 }
 
+async function provisionGradle(
+    versionInfo: GradleVersionInfo
+): Promise<string> {
+    return core.group(`Provision Gradle ${versionInfo.version}`, async () => {
+        return locateGradleAndDownloadIfRequired(versionInfo)
+    })
+}
 
-async function provisionGradle(version: string, url: string): Promise<string> {
-
-    const cachedInstall: string = toolCache.find("gradle", version);
-    if (cachedInstall.length > 0) {
-        const cachedExecutable = executableFrom(cachedInstall);
-        core.info(`Provisioned Gradle executable ${cachedExecutable}`);
-        return cachedExecutable;
+async function locateGradleAndDownloadIfRequired(
+    versionInfo: GradleVersionInfo
+): Promise<string> {
+    const installsDir = path.join(os.homedir(), 'gradle-installations/installs')
+    const installDir = path.join(installsDir, `gradle-${versionInfo.version}`)
+    if (fs.existsSync(installDir)) {
+        core.info(`Gradle installation already exists at ${installDir}`)
+        return executableFrom(installDir)
     }
 
-    const home = process.env["HOME"] || "";
-    const tmpdir = path.join(home, "gradle-provision-tmpdir");
-    const downloadsDir = path.join(tmpdir, "downloads");
-    const installsDir = path.join(tmpdir, "installs");
-    await io.mkdirP(downloadsDir);
-    await io.mkdirP(installsDir);
+    const downloadPath = await downloadAndCacheGradleDistribution(versionInfo)
+    await toolCache.extractZip(downloadPath, installsDir)
+    core.info(`Extracted Gradle ${versionInfo.version} to ${installDir}`)
 
-    core.info(`Downloading ${url}`);
+    const executable = executableFrom(installDir)
+    fs.chmodSync(executable, '755')
+    core.info(`Provisioned Gradle executable ${executable}`)
 
-    const downloadPath = path.join(downloadsDir, `gradle-${version}-bin.zip`);
-    await httpDownload(url, downloadPath);
-    core.info(`Downloaded at ${downloadPath}, size ${fs.statSync(downloadPath).size}`);
-
-    await extractZip(downloadPath, installsDir);
-    const installDir = path.join(installsDir, `gradle-${version}`);
-    core.info(`Extracted in ${installDir}`);
-
-    const executable = executableFrom(installDir);
-    fs.chmodSync(executable, "755");
-    core.info(`Provisioned Gradle executable ${executable}`);
-
-    toolCache.cacheDir(installDir, "gradle", version);
-
-    return executable;
+    return executable
 }
 
+async function downloadAndCacheGradleDistribution(
+    versionInfo: GradleVersionInfo
+): Promise<string> {
+    const downloadPath = path.join(
+        os.homedir(),
+        `gradle-installations/downloads/gradle-${versionInfo.version}-bin.zip`
+    )
+
+    if (isCacheDisabled()) {
+        await downloadGradleDistribution(versionInfo, downloadPath)
+        return downloadPath
+    }
+
+    const cacheKey = `gradle-${versionInfo.version}`
+    const restoreKey = await cache.restoreCache([downloadPath], cacheKey)
+    if (restoreKey) {
+        core.info(
+            `Restored Gradle distribution ${cacheKey} from cache to ${downloadPath}`
+        )
+        return downloadPath
+    }
+    core.info(
+        `Gradle distribution ${versionInfo.version} not found in cache. Will download.`
+    )
+    await downloadGradleDistribution(versionInfo, downloadPath)
+
+    if (!isCacheReadOnly()) {
+        try {
+            await cache.saveCache([downloadPath], cacheKey)
+        } catch (error) {
+            // Fail on validation errors or non-errors (the latter to keep Typescript happy)
+            if (
+                error instanceof cache.ValidationError ||
+                !(error instanceof Error)
+            ) {
+                throw error
+            }
+            core.warning(error.message)
+        }
+    }
+    return downloadPath
+}
+
+async function downloadGradleDistribution(
+    versionInfo: GradleVersionInfo,
+    downloadPath: string
+): Promise<void> {
+    await toolCache.downloadTool(versionInfo.downloadUrl, downloadPath)
+    core.info(
+        `Downloaded ${versionInfo.downloadUrl} to ${downloadPath} (size ${
+            fs.statSync(downloadPath).size
+        })`
+    )
+}
 
 function executableFrom(installDir: string): string {
-    return path.join(installDir, "bin", `${gradlew.installScriptFilename()}`);
+    return path.join(installDir, 'bin', `${gradlew.installScriptFilename()}`)
 }
 
-
-async function httpGetJson(url: string): Promise<any> {
-    const response = await httpc.get(url);
-    const body = await response.readBody();
-    return JSON.parse(body);
+async function httpGetGradleVersion(url: string): Promise<GradleVersionInfo> {
+    return JSON.parse(await httpGetString(url))
 }
 
-
-async function httpDownload(url: string, path: string): Promise<void> {
-    return new Promise<void>(function (resolve, reject) {
-        const writeStream = fs.createWriteStream(path);
-        httpc.get(url).then(response => {
-            response.message.pipe(writeStream)
-                .on("close", () => {
-                    resolve();
-                })
-                .on("error", err => {
-                    reject(err)
-                });
-        }).catch(reason => {
-            reject(reason);
-        });
-    });
+async function httpGetGradleVersions(
+    url: string
+): Promise<GradleVersionInfo[]> {
+    return JSON.parse(await httpGetString(url))
 }
 
-
-async function extractZip(zip: string, destination: string): Promise<void> {
-    return new Promise<void>(function (resolve, reject) {
-        fs.createReadStream(zip)
-            .pipe(unzip.Extract({"path": destination}))
-            .on("close", () => {
-                resolve();
-            })
-            .on("error", err => {
-                reject(err)
-            });
-    });
+async function httpGetString(url: string): Promise<string> {
+    const httpClient = new httpm.HttpClient('gradle/gradle-build-action')
+    const response = await httpClient.get(url)
+    return response.readBody()
+}
+
+interface GradleVersionInfo {
+    version: string
+    downloadUrl: string
 }

tsconfig.json

@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     /* Basic Options */
-    "incremental": true,                      /* Enable incremental compilation */
+    "incremental": false,                      /* Enable incremental compilation */
     "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
     "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
     // "allowJs": true,                       /* Allow javascript files to be compiled. */