Merge pull request #414 from gradle/dd/cache-cleanup-windows

Implement cache-cleanup on Windows

.github/actions/build-dist/action.yml

@@ -7,7 +7,7 @@ runs:
       shell: bash
       run: |
         npm install
-        npm run all
+        npm run build
     - name: Upload distribution
       uses: actions/upload-artifact@v3
       with:

.github/dependabot.yml

@@ -49,3 +49,9 @@ updates:
       - gradle-plugin-portal
     schedule:
       interval: "daily"
+  - package-ecosystem: "gradle"
+    directory: "test/init-scripts"
+    registries:
+      - gradle-plugin-portal
+    schedule:
+      interval: "daily"

.github/workflow-samples/gradle-plugin/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=29e49b10984e585d8118b7d0bc452f944e386458df27371b49b4ac1dec4b7fda
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionSha256Sum=f6b8596b10cce501591e92f229816aa4046424f3b24d771751b06779d58c8ec4
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

.github/workflow-samples/gradle-plugin/gradlew

@@ -205,6 +205,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

.github/workflow-samples/gradle-plugin/gradlew.bat

@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,7 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +75,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 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
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

.github/workflow-samples/groovy-dsl/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=29e49b10984e585d8118b7d0bc452f944e386458df27371b49b4ac1dec4b7fda
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionSha256Sum=f6b8596b10cce501591e92f229816aa4046424f3b24d771751b06779d58c8ec4
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

.github/workflow-samples/groovy-dsl/gradlew

@@ -205,6 +205,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

.github/workflow-samples/groovy-dsl/gradlew.bat

@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,7 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +75,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 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
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

.github/workflow-samples/groovy-dsl/settings.gradle

@@ -1,6 +1,6 @@
 plugins {
-    id "com.gradle.enterprise" version "3.10.2"
-    id "com.gradle.common-custom-user-data-gradle-plugin" version "1.7.2"
+    id "com.gradle.enterprise" version "3.11.1"
+    id "com.gradle.common-custom-user-data-gradle-plugin" version "1.8"
 }
 
 gradleEnterprise {

.github/workflow-samples/java-toolchain/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=29e49b10984e585d8118b7d0bc452f944e386458df27371b49b4ac1dec4b7fda
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionSha256Sum=f6b8596b10cce501591e92f229816aa4046424f3b24d771751b06779d58c8ec4
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

.github/workflow-samples/java-toolchain/gradlew

@@ -205,6 +205,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

.github/workflow-samples/java-toolchain/gradlew.bat

@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,7 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +75,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 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
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

.github/workflow-samples/kotlin-dsl/build.gradle.kts

@@ -10,7 +10,7 @@ dependencies {
     api("org.apache.commons:commons-math3:3.6.1")
     implementation("com.google.guava:guava:31.1-jre")
 
-    testImplementation("org.junit.jupiter:junit-jupiter:5.8.2")
+    testImplementation("org.junit.jupiter:junit-jupiter:5.9.0")
 }
 
 tasks.test {

.github/workflow-samples/kotlin-dsl/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=29e49b10984e585d8118b7d0bc452f944e386458df27371b49b4ac1dec4b7fda
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
+distributionSha256Sum=f6b8596b10cce501591e92f229816aa4046424f3b24d771751b06779d58c8ec4
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

.github/workflow-samples/kotlin-dsl/gradlew

@@ -205,6 +205,12 @@ set -- \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

.github/workflow-samples/kotlin-dsl/gradlew.bat

@@ -14,7 +14,7 @@
 @rem limitations under the License.
 @rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +25,7 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -75,13 +75,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 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
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

.github/workflow-samples/kotlin-dsl/settings.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
-    id("com.gradle.enterprise") version "3.10.2"
-    id("com.gradle.common-custom-user-data-gradle-plugin") version "1.7.2"
+    id("com.gradle.enterprise") version "3.11.1"
+    id("com.gradle.common-custom-user-data-gradle-plugin") version "1.8"
 }
 
 gradleEnterprise {

.github/workflow-samples/no-wrapper-gradle-5/build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id "com.gradle.build-scan" version "3.10.2" 
+    id "com.gradle.build-scan" version "3.11.1" 
 }
 
 gradleEnterprise {

.github/workflow-samples/no-wrapper/settings.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id "com.gradle.enterprise" version "3.10.2"
+    id "com.gradle.enterprise" version "3.11.1"
 }
 
 gradleEnterprise {

.github/workflows/ci-full-check.yml

@@ -1,6 +1,7 @@
 name: CI-full-check
 
 on:
+  workflow_dispatch:
   pull_request:
     types:
       - assigned
@@ -9,7 +10,7 @@ on:
     branches: 
       - main
     paths:
-      - '.github/workflows/**'
+      - '.github/**'
       - 'dist/**'
 
 jobs:
@@ -18,6 +19,11 @@ jobs:
     with:
       cache-key-prefix: ${{github.run_number}}-
 
+  cache-cleanup:
+    uses: ./.github/workflows/integ-test-cache-cleanup.yml
+    with:
+      cache-key-prefix: ${{github.run_number}}-
+
   caching-config:
     uses: ./.github/workflows/integ-test-action-inputs-caching.yml
     with:

.github/workflows/ci-init-script-check.yml

@@ -3,9 +3,9 @@ name: CI-init-script-check
 on:
   push:
     paths:
-      - '.github/workflows/**'
+      - '.github/workflows/ci-init-script-check.yml'
       - 'src/resources/init-scripts/**'
-      - 'test/init-script-check/**'
+      - 'test/init-scripts/**'
   workflow_dispatch:
 
 jobs:

.github/workflows/ci-quick-check.yml

@@ -1,6 +1,7 @@
 name: CI-quick-check
 
 on:
+  workflow_dispatch:
   push:
     branches-ignore: main
 
@@ -13,6 +14,16 @@ jobs:
     - name: Build and upload distribution
       uses: ./.github/actions/build-dist
 
+  run-unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v3
+    - name: Run tests
+      run: |
+        npm install
+        npm run all
+
   action-inputs:
     needs: build-distribution
     uses: ./.github/workflows/integ-test-action-inputs.yml
@@ -20,6 +31,14 @@ jobs:
       runner-os: '["ubuntu-latest"]'
       download-dist: true
 
+  cache-cleanup:
+    needs: build-distribution
+    uses: ./.github/workflows/integ-test-cache-cleanup.yml
+    with:
+      runner-os: '["ubuntu-latest"]'
+      download-dist: true
+      cache-key-prefix: ${{github.run_number}}- # Requires a fresh cache entry each run
+
   caching-config:
     needs: build-distribution
     uses: ./.github/workflows/integ-test-action-inputs-caching.yml

.github/workflows/ci-verify-outputs.yml

@@ -8,6 +8,7 @@ on:
   push:
     branches: 
       - main
+      - dependabot/**
 
 jobs:
   check:

.github/workflows/integ-test-cache-cleanup.yml

@@ -0,0 +1,87 @@
+name: Test cache cleanup
+
+on:
+  workflow_call:
+    inputs:
+      cache-key-prefix:
+        type: string
+      runner-os:
+        type: string
+        default: '["ubuntu-latest", "windows-latest", "macos-latest"]'
+      download-dist:
+        type: boolean
+        default: false
+
+env:
+  DOWNLOAD_DIST: ${{ inputs.download-dist }}
+  GRADLE_BUILD_ACTION_CACHE_KEY_PREFIX: integ-test-cache-cleanup-${{ inputs.cache-key-prefix }}
+  GRADLE_BUILD_ACTION_CACHE_DEBUG_ENABLED: true
+
+jobs:
+  full-build:
+    strategy:
+      matrix:
+        os: ${{fromJSON(inputs.runner-os)}}
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v3
+    - name: Download distribution if required
+      uses: ./.github/actions/download-dist
+    - name: Setup Gradle
+      uses: ./
+      with:
+        cache-read-only: false # For testing, allow writing cache entries on non-default branches
+    - name: Build with 3.1
+      working-directory: test/jest/resources/cache-cleanup
+      run: gradle --no-daemon --build-cache -Dcommons_math3_version="3.1" build
+
+  # Second build will use the cache from the first build, but cleanup should remove unused artifacts
+  assemble-build:
+    needs: full-build
+    strategy:
+      matrix:
+        os: ${{fromJSON(inputs.runner-os)}}
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v3
+    - name: Download distribution if required
+      uses: ./.github/actions/download-dist
+    - name: Setup Gradle
+      uses: ./
+      with:
+        cache-read-only: false
+        gradle-home-cache-cleanup: true
+    - name: Build with 3.1.1
+      working-directory: test/jest/resources/cache-cleanup
+      run: gradle --no-daemon --build-cache -Dcommons_math3_version="3.1.1" build
+
+  check-clean-cache:
+    needs: assemble-build
+    strategy:
+      matrix:
+        os: ${{fromJSON(inputs.runner-os)}}
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v3
+    - name: Download distribution if required
+      uses: ./.github/actions/download-dist
+    - name: Setup Gradle
+      uses: ./
+      with:
+        cache-read-only: true
+    - name: Report Gradle User Home
+      run: du -hc ~/.gradle/caches/modules-2
+    - name: Verify cleaned cache
+      shell: bash
+      run: |
+        if [ ! -e ~/.gradle/caches/modules-2/files-2.1/org.apache.commons/commons-math3/3.1.1 ]; then
+          echo "::error ::Should find commons-math3 3.1.1 in cache"
+          exit 1
+        fi
+        if [ -e ~/.gradle/caches/modules-2/files-2.1/org.apache.commons/commons-math3/3.1 ]; then
+          echo "::error ::Should NOT find commons-math3 3.1 in cache"
+          exit 1
+        fi

.github/workflows/integ-test-execution.yml

@@ -51,12 +51,12 @@ jobs:
       with:
         gradle-executable: .github/workflow-samples/groovy-dsl/gradlew${{ matrix.script-suffix }}
         build-root-directory: .github/workflow-samples/no-wrapper
-        arguments: help -DgradleVersionCheck=7.4.2
+        arguments: help
 
   gradle-versions:
     strategy:
       matrix:
-        gradle: [7.3, 6.9, 5.6.4, 4.10.3, 3.5.1]
+        gradle: [7.5.1, 6.9.2, 5.6.4, 4.10.3, 3.5.1]
         os: ${{fromJSON(inputs.runner-os)}}
         include:
           - gradle: 5.6.4

README.md

@@ -205,7 +205,6 @@ Caching is enabled by default. You can disable caching for the action as follows
 ```yaml
 cache-disabled: true
 ```
-
 ### Cache keys
 
 Distributions downloaded to satisfy a `gradle-version` parameter are stored outside of Gradle User Home and cached separately. The cache key is unique to the downloaded distribution and will not change over time.
@@ -234,6 +233,13 @@ You can configure read-only caching for the `gradle-build-action` as follows:
 cache-read-only: ${{ github.ref != 'refs/heads/main' && github.ref != 'refs/heads/release' }}
 ```
 
+### Stopping the Gradle daemon
+
+By default, the action will stop all running Gradle daemons in the post-action step, prior to saving the Gradle User Home state. 
+This allows for any Gradle User Home cleanup to occur, and avoid file-locking issues on Windows.
+
+If caching is unavailable or the cache is in read-only mode, the daemon will not be stopped and will continue running after the job is completed.
+
 ### Gradle User Home cache tuning
 
 As well as any wrapper distributions, the action will attempt to save and restore the `caches` and `notifications` directories from Gradle User Home.
@@ -258,7 +264,7 @@ File pattern support is documented at https://docs.github.com/en/actions/learn-g
 
 Gradle User Home state will be restored from the cache during the first `gradle-build-action` step for any workflow job. 
 This state will be saved back to the cache at the end of the job, after all Gradle executions have completed.
-A report of all cache entries restored and saved is printed to the action log when saving the cache entries. 
+A report of all cache entries restored and saved is printed to the Job Summary when saving the cache entries. 
 This report can provide valuable insignt into how much cache space is being used.
 
 It is possible to enable additional debug logging for cache operations. You do via the `GRADLE_BUILD_ACTION_CACHE_DEBUG_ENABLED` environment variable:
@@ -272,17 +278,18 @@ Note that this setting will also prevent certain cache operations from running i
 
 ### Optimizing cache effectiveness
 
-Cache storage space for GitHub actions is limited, and writing new cache entries can trigger the deletion of exising entries.
+Cache storage space for GitHub actions is limited, and writing new cache entries can trigger the deletion of existing entries.
 Eviction of shared cache entries can reduce cache effectiveness, slowing down your `gradle-build-action` steps.
 
 There are a number of actions you can take if your cache use is less effective due to entry eviction.
 
 #### Select branches that should write to the cache
 
-GitHub cache entries are not shared between builds on different branches. This means that identical cache entries will be stored separately for different branches.
-An exception to this is that cache entries for the default (`master`/`main`) branch can be read by actions invoked for other branches.
+GitHub cache entries are not shared between builds on different branches. 
+This means that each PR branch will have it's own Gradle User Home cache, and will not benefit from cache entries written by other PR branches.
+An exception to this is that cache entries written in parent and upstream branches are visible to child branches, and cache entries for the default (`master`/`main`) branch can be read by actions invoked for any other branch.
 
-By default, the `gradle-build-action` will only _write_ to the cache for builds run on the default branch. 
+By default, the `gradle-build-action` will only _write_ to the cache for builds run on the default (`master`/`main`) branch. 
 Jobs run on other branches will only read from the cache. In most cases, this is the desired behaviour, 
 because Jobs run against other branches will benefit from the cache Gradle User Home from `main`, 
 without writing private cache entries that could lead to evicting shared entries.
@@ -361,3 +368,11 @@ jobs:
             body: '❌ ${{ github.workflow }} failed: ${{ steps.gradle.outputs.build-scan-url }}'
           })
 ```
+
+## Support for GitHub Enterprise Server (GHES)
+
+You can use the `gradle-build-action` on GitHub Enterprise Server, and benefit from the improved integration with Gradle. Depending on the version of GHES you are running, certain features may be limited:
+- Build scan links are captured and displayed in the GitHub Actions UI
+- Easily run your build with different versions of Gradle
+- Save/restore of Gradle User Home (requires GHES v3.5+ : GitHub Actions cache was introduced in GHES 3.5)
+- Support for GitHub Actions Job Summary is not yet available in any version of GHES. Instead of producing a Job Summary, the build-results summary and caching report will be written to the workflow log, as part of the post-action step.

action.yml

@@ -18,7 +18,7 @@ inputs:
       When 'true', existing entries will be read from the cache but no entries will be written.
       By default this value is 'false' for workflows on the GitHub default branch and 'true' for workflows on other branches.
     required: false
-    default: ${{ github.ref_name != github.event.repository.default_branch }}
+    default: ${{ github.event.repository != null && github.ref_name != github.event.repository.default_branch }}
 
   cache-write-only:
     description: |
@@ -70,6 +70,10 @@ inputs:
     description: Used to uniquely identify the current job invocation. Defaults to the matrix values for this job; this should not be overridden by users (INTERNAL).
     required: false
     default: ${{ toJSON(matrix) }}
+  gradle-home-cache-cleanup:
+    description: When 'true', the action will attempt to remove any stale/unused entries from the Gradle User Home prior to saving to the GitHub Actions cache.
+    required: false
+    default: false
 
 outputs:
   build-scan-url:

package.json

@@ -8,10 +8,11 @@
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
     "lint": "eslint src/**/*.ts",
-    "build": "ncc build src/main.ts --out dist/main --source-map && ncc build src/post.ts --out dist/post --source-map",
+    "compile": "ncc build src/main.ts --out dist/main --source-map && ncc build src/post.ts --out dist/post --source-map",
     "test": "jest",
     "check": "npm run format && npm run lint",
-    "all": "npm run format && npm run lint && npm run build && npm test"
+    "build": "npm run check && npm run compile",
+    "all": "npm run build && npm test"
   },
   "repository": {
     "type": "git",
@@ -25,8 +26,8 @@
   ],
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "2.0.6",
-    "@actions/core": "1.8.2",
+    "@actions/cache": "3.0.4",
+    "@actions/core": "1.9.1",
     "@actions/exec": "1.1.1",
     "@actions/github": "5.0.3",
     "@actions/glob": "0.3.0",
@@ -35,19 +36,19 @@
     "string-argv": "0.3.1"
   },
   "devDependencies": {
-    "@types/jest": "28.1.1",
+    "@types/jest": "28.1.7",
     "@types/node": "16.11.21",
     "@types/unzipper": "0.10.5",
-    "@typescript-eslint/parser": "5.28.0",
+    "@typescript-eslint/parser": "5.35.1",
     "@vercel/ncc": "0.34.0",
-    "eslint": "8.17.0",
-    "eslint-plugin-github": "4.3.6",
-    "eslint-plugin-jest": "26.5.3",
-    "jest": "28.1.1",
+    "eslint": "8.22.0",
+    "eslint-plugin-github": "4.3.7",
+    "eslint-plugin-jest": "26.8.7",
+    "jest": "28.1.3",
     "js-yaml": "4.1.0",
     "patch-package": "6.4.7",
-    "prettier": "2.7.0",
-    "ts-jest": "28.0.5",
-    "typescript": "4.7.3"
+    "prettier": "2.7.1",
+    "ts-jest": "28.0.8",
+    "typescript": "4.8.2"
   }
 }

patches/@actions+cache+3.0.4.patch

@@ -26,18 +26,17 @@ index 16b20f7..aea77ba 100644
 +    constructor(key: string, size?: number);
 +}
 diff --git a/node_modules/@actions/cache/lib/cache.js b/node_modules/@actions/cache/lib/cache.js
-index 2dd645a..a392352 100644
+index 4dc5e88..92d99d5 100644
 --- a/node_modules/@actions/cache/lib/cache.js
 +++ b/node_modules/@actions/cache/lib/cache.js
-@@ -93,6 +93,7 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
-         }
-         const archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
-         core.debug(`Archive Path: ${archivePath}`);
-+        const restoredEntry = new CacheEntry(cacheEntry.cacheKey);
-         try {
+@@ -95,26 +95,18 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
+             }
+             archivePath = path.join(yield utils.createTempDirectory(), utils.getCacheFileName(compressionMethod));
+             core.debug(`Archive Path: ${archivePath}`);
++            const restoredEntry = new CacheEntry(cacheEntry.cacheKey);
              // Download the cache from the cache entry
              yield cacheHttpClient.downloadCache(cacheEntry.archiveLocation, archivePath, options);
-@@ -100,6 +101,7 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
+             if (core.isDebug()) {
                  yield tar_1.listTar(archivePath, compressionMethod);
              }
              const archiveFileSize = utils.getArchiveFileSizeInBytes(archivePath);
@@ -45,16 +44,22 @@ index 2dd645a..a392352 100644
              core.info(`Cache Size: ~${Math.round(archiveFileSize / (1024 * 1024))} MB (${archiveFileSize} B)`);
              yield tar_1.extractTar(archivePath, compressionMethod);
              core.info('Cache restored successfully');
-@@ -113,7 +115,7 @@ function restoreCache(paths, primaryKey, restoreKeys, options) {
-                 core.debug(`Failed to delete archive: ${error}`);
-             }
+-            return cacheEntry.cacheKey;
+-        }
+-        catch (error) {
+-            const typedError = error;
+-            if (typedError.name === ValidationError.name) {
+-                throw error;
+-            }
+-            else {
+-                // Supress all non-validation cache related errors because caching should be optional
+-                core.warning(`Failed to restore: ${error.message}`);
+-            }
++            return restoredEntry;
          }
--        return cacheEntry.cacheKey;
-+        return restoredEntry;
-     });
- }
- exports.restoreCache = restoreCache;
-@@ -141,6 +143,7 @@ function saveCache(paths, key, options) {
+         finally {
+             // Try to delete the archive to save space
+@@ -153,6 +145,7 @@ function saveCache(paths, key, options) {
          const archiveFolder = yield utils.createTempDirectory();
          const archivePath = path.join(archiveFolder, utils.getCacheFileName(compressionMethod));
          core.debug(`Archive Path: ${archivePath}`);
@@ -62,7 +67,7 @@ index 2dd645a..a392352 100644
          try {
              yield tar_1.createTar(archiveFolder, cachePaths, compressionMethod);
              if (core.isDebug()) {
-@@ -148,6 +151,7 @@ function saveCache(paths, key, options) {
+@@ -160,6 +153,7 @@ function saveCache(paths, key, options) {
              }
              const fileSizeLimit = 10 * 1024 * 1024 * 1024; // 10GB per repo limit
              const archiveFileSize = utils.getArchiveFileSizeInBytes(archivePath);
@@ -70,7 +75,26 @@ index 2dd645a..a392352 100644
              core.debug(`File Size: ${archiveFileSize}`);
              // For GHES, this check will take place in ReserveCache API with enterprise file size limit
              if (archiveFileSize > fileSizeLimit && !utils.isGhes()) {
-@@ -179,8 +183,15 @@ function saveCache(paths, key, options) {
+@@ -182,18 +176,6 @@ function saveCache(paths, key, options) {
+             core.debug(`Saving Cache (ID: ${cacheId})`);
+             yield cacheHttpClient.saveCache(cacheId, archivePath, options);
+         }
+-        catch (error) {
+-            const typedError = error;
+-            if (typedError.name === ValidationError.name) {
+-                throw error;
+-            }
+-            else if (typedError.name === ReserveCacheError.name) {
+-                core.info(`Failed to save: ${typedError.message}`);
+-            }
+-            else {
+-                core.warning(`Failed to save: ${typedError.message}`);
+-            }
+-        }
+         finally {
+             // Try to delete the archive to save space
+             try {
+@@ -203,8 +185,15 @@ function saveCache(paths, key, options) {
                  core.debug(`Failed to delete archive: ${error}`);
              }
          }

release/changes.md

@@ -1 +0,0 @@
-- [NEW] Use Job Summary to display build scan links, instead of GHA annotations

src/build-results.ts

@@ -0,0 +1,27 @@
+import * as fs from 'fs'
+import * as path from 'path'
+
+export interface BuildResult {
+    get rootProjectName(): string
+    get rootProjectDir(): string
+    get requestedTasks(): string
+    get gradleVersion(): string
+    get gradleHomeDir(): string
+    get buildFailed(): boolean
+    get buildScanUri(): string
+    get buildScanFailed(): boolean
+}
+
+export function loadBuildResults(): BuildResult[] {
+    const buildResultsDir = path.resolve(process.env['RUNNER_TEMP']!, '.build-results')
+    if (!fs.existsSync(buildResultsDir)) {
+        return []
+    }
+
+    return fs.readdirSync(buildResultsDir).map(file => {
+        // Every file in the .build-results dir should be a BuildResults JSON
+        const filePath = path.join(buildResultsDir, file)
+        const content = fs.readFileSync(filePath, 'utf8')
+        return JSON.parse(content) as BuildResult
+    })
+}

src/cache-base.ts

@@ -101,9 +101,9 @@ export class GradleStateCache {
 
             for (const entryListener of listener.cacheEntries) {
                 if (entryListener === gradleHomeEntryListener) {
-                    entryListener.markUnsaved('cache key not changed')
+                    entryListener.markNotSaved('cache key not changed')
                 } else {
-                    entryListener.markUnsaved(`referencing '${this.cacheDescription}' cache entry not saved`)
+                    entryListener.markNotSaved(`referencing '${this.cacheDescription}' cache entry not saved`)
                 }
             }
             return

src/cache-cleaner.ts

@@ -0,0 +1,68 @@
+import * as core from '@actions/core'
+import * as exec from '@actions/exec'
+import * as glob from '@actions/glob'
+import fs from 'fs'
+import path from 'path'
+
+export class CacheCleaner {
+    private readonly gradleUserHome: string
+    private readonly tmpDir: string
+
+    constructor(gradleUserHome: string, tmpDir: string) {
+        this.gradleUserHome = gradleUserHome
+        this.tmpDir = tmpDir
+    }
+
+    async prepare(): Promise<void> {
+        // Reset the file-access journal so that files appear not to have been used recently
+        fs.rmSync(path.resolve(this.gradleUserHome, 'caches/journal-1'), {recursive: true, force: true})
+        fs.mkdirSync(path.resolve(this.gradleUserHome, 'caches/journal-1'), {recursive: true})
+        fs.writeFileSync(
+            path.resolve(this.gradleUserHome, 'caches/journal-1/file-access.properties'),
+            'inceptionTimestamp=0'
+        )
+
+        // Set the modification time of all files to the past: this timestamp is used when there is no matching entry in the journal
+        await this.ageAllFiles()
+
+        // Touch all 'gc' files so that cache cleanup won't run immediately.
+        await this.touchAllFiles('gc.properties')
+    }
+
+    async forceCleanup(): Promise<void> {
+        // Age all 'gc' files so that cache cleanup will run immediately.
+        await this.ageAllFiles('gc.properties')
+
+        // Run a dummy Gradle build to trigger cache cleanup
+        const cleanupProjectDir = path.resolve(this.tmpDir, 'dummy-cleanup-project')
+        fs.mkdirSync(cleanupProjectDir, {recursive: true})
+        fs.writeFileSync(
+            path.resolve(cleanupProjectDir, 'settings.gradle'),
+            'rootProject.name = "dummy-cleanup-project"'
+        )
+        fs.writeFileSync(path.resolve(cleanupProjectDir, 'build.gradle'), 'task("noop") {}')
+
+        await exec.exec(`gradle -g ${this.gradleUserHome} --no-daemon --build-cache --no-scan --quiet noop`, [], {
+            cwd: cleanupProjectDir
+        })
+    }
+
+    private async ageAllFiles(fileName = '*'): Promise<void> {
+        core.debug(`Aging all files in Gradle User Homee with name ${fileName}`)
+        await this.setUtimes(`${this.gradleUserHome}/**/${fileName}`, new Date(0))
+    }
+
+    private async touchAllFiles(fileName = '*'): Promise<void> {
+        core.debug(`Touching all files in Gradle User Home with name ${fileName}`)
+        await this.setUtimes(`${this.gradleUserHome}/**/${fileName}`, new Date())
+    }
+
+    private async setUtimes(pattern: string, timestamp: Date): Promise<void> {
+        const globber = await glob.create(pattern, {
+            implicitDescendants: false
+        })
+        for await (const file of globber.globGenerator()) {
+            fs.utimesSync(file, timestamp, timestamp)
+        }
+    }
+}

src/cache-extract-entries.ts

@@ -14,7 +14,7 @@ import {
     saveCache,
     tryDelete
 } from './cache-utils'
-import {loadBuildResults} from './job-summary'
+import {loadBuildResults} from './build-results'
 
 const SKIP_RESTORE_VAR = 'GRADLE_BUILD_ACTION_SKIP_RESTORE'
 
@@ -150,8 +150,7 @@ abstract class AbstractEntryExtractor {
 
             // Find all matching files for this cache entry definition
             const globber = await glob.create(pattern, {
-                implicitDescendants: false,
-                followSymbolicLinks: false
+                implicitDescendants: false
             })
             const matchingFiles = await globber.glob()
 
@@ -213,7 +212,7 @@ abstract class AbstractEntryExtractor {
 
         if (previouslyRestoredKey === cacheKey) {
             cacheDebug(`No change to previously restored ${artifactType}. Not saving.`)
-            entryListener.markUnsaved('contents unchanged')
+            entryListener.markNotSaved('contents unchanged')
         } else {
             core.info(`Caching ${artifactType} with path '${pattern}' and cache key: ${cacheKey}`)
             await saveCache([pattern], cacheKey, entryListener)
@@ -308,8 +307,7 @@ export class GradleHomeEntryExtractor extends AbstractEntryExtractor {
     private async deleteWrapperZips(): Promise<void> {
         const wrapperZips = path.resolve(this.gradleUserHome, 'wrapper/dists/*/*/*.zip')
         const globber = await glob.create(wrapperZips, {
-            implicitDescendants: false,
-            followSymbolicLinks: false
+            implicitDescendants: false
         })
 
         for (const wrapperZip of await globber.glob()) {

src/cache-reporting.ts

@@ -1,4 +1,5 @@
 import * as core from '@actions/core'
+import * as cache from '@actions/cache'
 
 /**
  * Collects information on what entries were saved and restored during the action.
@@ -6,18 +7,19 @@ import * as core from '@actions/core'
  */
 export class CacheListener {
     cacheEntries: CacheEntryListener[] = []
-    isCacheReadOnly = false
-    isCacheWriteOnly = false
-    isCacheDisabled = false
+    cacheReadOnly = false
+    cacheWriteOnly = false
+    cacheDisabled = false
 
     get fullyRestored(): boolean {
         return this.cacheEntries.every(x => !x.wasRequestedButNotRestored())
     }
 
     get cacheStatus(): string {
-        if (this.isCacheDisabled) return 'disabled'
-        if (this.isCacheWriteOnly) return 'write-only'
-        if (this.isCacheReadOnly) return 'read-only'
+        if (!cache.isFeatureAvailable()) return 'not available'
+        if (this.cacheDisabled) return 'disabled'
+        if (this.cacheWriteOnly) return 'write-only'
+        if (this.cacheReadOnly) return 'read-only'
         return 'enabled'
     }
 
@@ -60,11 +62,11 @@ export class CacheEntryListener {
     requestedRestoreKeys: string[] | undefined
     restoredKey: string | undefined
     restoredSize: number | undefined
+    notRestored: string | undefined
 
     savedKey: string | undefined
     savedSize: number | undefined
-
-    unsaved: string | undefined
+    notSaved: string | undefined
 
     constructor(entryName: string) {
         this.entryName = entryName
@@ -86,6 +88,11 @@ export class CacheEntryListener {
         return this
     }
 
+    markNotRestored(message: string): CacheEntryListener {
+        this.notRestored = message
+        return this
+    }
+
     markSaved(key: string, size: number | undefined): CacheEntryListener {
         this.savedKey = key
         this.savedSize = size
@@ -98,13 +105,13 @@ export class CacheEntryListener {
         return this
     }
 
-    markUnsaved(message: string): CacheEntryListener {
-        this.unsaved = message
+    markNotSaved(message: string): CacheEntryListener {
+        this.notSaved = message
         return this
     }
 }
 
-export function logCachingReport(listener: CacheListener): void {
+export function writeCachingReport(listener: CacheListener): void {
     const entries = listener.cacheEntries
 
     core.summary.addRaw(
@@ -123,21 +130,7 @@ export function logCachingReport(listener: CacheListener): void {
 
     core.summary.addHeading('Cache Entry Details', 5)
 
-    const entryDetails = listener.cacheEntries
-        .map(
-            entry =>
-                `Entry: ${entry.entryName}
-    Requested Key : ${entry.requestedKey ?? ''}
-    Restored  Key : ${entry.restoredKey ?? ''}
-              Size: ${formatSize(entry.restoredSize)}
-              ${getRestoredMessage(entry, listener.isCacheWriteOnly)}
-    Saved     Key : ${entry.savedKey ?? ''}
-              Size: ${formatSize(entry.savedSize)}
-              ${getSavedMessage(entry, listener.isCacheReadOnly)}
-`
-        )
-        .join('---\n')
-
+    const entryDetails = renderEntryDetails(listener)
     core.summary.addRaw(`<pre>
 ${entryDetails}
 </pre>
@@ -145,10 +138,48 @@ ${entryDetails}
 `)
 }
 
-function getRestoredMessage(entry: CacheEntryListener, isCacheWriteOnly: boolean): string {
-    if (isCacheWriteOnly) {
+export function logCachingReport(listener: CacheListener): void {
+    const entries = listener.cacheEntries
+
+    core.startGroup(`Caching for gradle-build-action was ${listener.cacheStatus} - expand for details`)
+
+    core.info(
+        `Entries Restored: ${getCount(entries, e => e.restoredSize)} (${getSize(entries, e => e.restoredSize)} Mb)`
+    )
+    core.info(`Entries Saved   : ${getCount(entries, e => e.savedSize)} (${getSize(entries, e => e.savedSize)} Mb)`)
+
+    core.info(`Cache Entry Details`)
+    core.info(renderEntryDetails(listener))
+
+    core.endGroup()
+}
+
+function renderEntryDetails(listener: CacheListener): string {
+    return listener.cacheEntries
+        .map(
+            entry => `Entry: ${entry.entryName}
+    Requested Key : ${entry.requestedKey ?? ''}
+    Restored  Key : ${entry.restoredKey ?? ''}
+              Size: ${formatSize(entry.restoredSize)}
+              ${getRestoredMessage(entry, listener.cacheWriteOnly)}
+    Saved     Key : ${entry.savedKey ?? ''}
+              Size: ${formatSize(entry.savedSize)}
+              ${getSavedMessage(entry, listener.cacheReadOnly)}
+`
+        )
+        .join('---\n')
+}
+
+function getRestoredMessage(entry: CacheEntryListener, cacheWriteOnly: boolean): string {
+    if (entry.notRestored) {
+        return `(Entry not restored: ${entry.notRestored})`
+    }
+    if (cacheWriteOnly) {
         return '(Entry not restored: cache is write-only)'
     }
+    if (entry.requestedKey === undefined) {
+        return '(Entry not restored: not requested)'
+    }
     if (entry.restoredKey === undefined) {
         return '(Entry not restored: no match found)'
     }
@@ -158,12 +189,12 @@ function getRestoredMessage(entry: CacheEntryListener, isCacheWriteOnly: boolean
     return '(Entry restored: partial match found)'
 }
 
-function getSavedMessage(entry: CacheEntryListener, isCacheReadOnly: boolean): string {
-    if (entry.unsaved) {
-        return `(Entry not saved: ${entry.unsaved})`
+function getSavedMessage(entry: CacheEntryListener, cacheReadOnly: boolean): string {
+    if (entry.notSaved) {
+        return `(Entry not saved: ${entry.notSaved})`
     }
     if (entry.savedKey === undefined) {
-        if (isCacheReadOnly) {
+        if (cacheReadOnly) {
             return '(Entry not saved: cache is read-only)'
         }
         return '(Entry not saved: reason unknown)'
@@ -178,7 +209,7 @@ function getCount(
     cacheEntries: CacheEntryListener[],
     predicate: (value: CacheEntryListener) => number | undefined
 ): number {
-    return cacheEntries.filter(e => predicate(e) !== undefined).length
+    return cacheEntries.filter(e => predicate(e)).length
 }
 
 function getSize(

src/cache-utils.ts

@@ -16,6 +16,7 @@ const CACHE_DISABLED_PARAMETER = 'cache-disabled'
 const CACHE_READONLY_PARAMETER = 'cache-read-only'
 const CACHE_WRITEONLY_PARAMETER = 'cache-write-only'
 const STRICT_CACHE_MATCH_PARAMETER = 'gradle-home-cache-strict-match'
+const CACHE_CLEANUP_ENABLED_PARAMETER = 'gradle-home-cache-cleanup'
 const CACHE_DEBUG_VAR = 'GRADLE_BUILD_ACTION_CACHE_DEBUG_ENABLED'
 
 const CACHE_KEY_PREFIX_VAR = 'GRADLE_BUILD_ACTION_CACHE_KEY_PREFIX'
@@ -24,7 +25,13 @@ const CACHE_KEY_JOB_VAR = 'GRADLE_BUILD_ACTION_CACHE_KEY_JOB'
 const CACHE_KEY_JOB_INSTANCE_VAR = 'GRADLE_BUILD_ACTION_CACHE_KEY_JOB_INSTANCE'
 const CACHE_KEY_JOB_EXECUTION_VAR = 'GRADLE_BUILD_ACTION_CACHE_KEY_JOB_EXECUTION'
 
+const SEGMENT_DOWNLOAD_TIMEOUT_VAR = 'SEGMENT_DOWNLOAD_TIMEOUT_MINS'
+const SEGMENT_DOWNLOAD_TIMEOUT_DEFAULT = 10 * 60 * 1000 // 10 minutes
+
 export function isCacheDisabled(): boolean {
+    if (!cache.isFeatureAvailable()) {
+        return true
+    }
     return core.getBooleanInput(CACHE_DISABLED_PARAMETER)
 }
 
@@ -40,6 +47,10 @@ export function isCacheDebuggingEnabled(): boolean {
     return process.env[CACHE_DEBUG_VAR] ? true : false
 }
 
+export function isCacheCleanupEnabled(): boolean {
+    return core.getBooleanInput(CACHE_CLEANUP_ENABLED_PARAMETER)
+}
+
 /**
  * Represents a key used to restore a cache entry.
  * The Github Actions cache will first try for an exact match on the key.
@@ -145,12 +156,17 @@ export async function restoreCache(
 ): Promise<cache.CacheEntry | undefined> {
     listener.markRequested(cacheKey, cacheRestoreKeys)
     try {
-        const restoredEntry = await cache.restoreCache(cachePath, cacheKey, cacheRestoreKeys)
+        // Only override the read timeout if the SEGMENT_DOWNLOAD_TIMEOUT_MINS env var has NOT been set
+        const cacheRestoreOptions = process.env[SEGMENT_DOWNLOAD_TIMEOUT_VAR]
+            ? {}
+            : {segmentTimeoutInMs: SEGMENT_DOWNLOAD_TIMEOUT_DEFAULT}
+        const restoredEntry = await cache.restoreCache(cachePath, cacheKey, cacheRestoreKeys, cacheRestoreOptions)
         if (restoredEntry !== undefined) {
             listener.markRestored(restoredEntry.key, restoredEntry.size)
         }
         return restoredEntry
     } catch (error) {
+        listener.markNotRestored((error as Error).message)
         handleCacheFailure(error, `Failed to restore ${cacheKey}`)
         return undefined
     }
@@ -163,6 +179,8 @@ export async function saveCache(cachePath: string[], cacheKey: string, listener:
     } catch (error) {
         if (error instanceof cache.ReserveCacheError) {
             listener.markAlreadyExists(cacheKey)
+        } else {
+            listener.markNotSaved((error as Error).message)
         }
         handleCacheFailure(error, `Failed to save cache entry with path '${cachePath}' and key: ${cacheKey}`)
     }

src/caches.ts

@@ -1,7 +1,9 @@
 import * as core from '@actions/core'
-import {isCacheDisabled, isCacheReadOnly, isCacheWriteOnly} from './cache-utils'
+import {isCacheCleanupEnabled, isCacheDisabled, isCacheReadOnly, isCacheWriteOnly} from './cache-utils'
 import {CacheListener} from './cache-reporting'
+import {DaemonController} from './daemon-controller'
 import {GradleStateCache} from './cache-base'
+import {CacheCleaner} from './cache-cleaner'
 
 const CACHE_RESTORED_VAR = 'GRADLE_BUILD_ACTION_CACHE_RESTORED'
 
@@ -19,7 +21,7 @@ export async function restore(gradleUserHome: string, cacheListener: CacheListen
         core.info('Cache is disabled: will not restore state from previous builds.')
         // Initialize the Gradle User Home even when caching is disabled.
         gradleStateCache.init()
-        cacheListener.isCacheDisabled = true
+        cacheListener.cacheDisabled = true
         return
     }
 
@@ -36,41 +38,51 @@ export async function restore(gradleUserHome: string, cacheListener: CacheListen
 
     if (isCacheWriteOnly()) {
         core.info('Cache is write-only: will not restore from cache.')
-        cacheListener.isCacheWriteOnly = true
+        cacheListener.cacheWriteOnly = true
         return
     }
 
     await core.group('Restore Gradle state from cache', async () => {
         await gradleStateCache.restore(cacheListener)
     })
+
+    if (isCacheCleanupEnabled() && !isCacheReadOnly()) {
+        core.info('Preparing cache for cleanup.')
+        const cacheCleaner = new CacheCleaner(gradleUserHome, process.env['RUNNER_TEMP']!)
+        await cacheCleaner.prepare()
+    }
 }
 
-export async function save(gradleUserHome: string, cacheListener: CacheListener): Promise<void> {
-    if (!shouldSaveCaches()) {
+export async function save(
+    gradleUserHome: string,
+    cacheListener: CacheListener,
+    daemonController: DaemonController
+): Promise<void> {
+    if (isCacheDisabled()) {
+        core.info('Cache is disabled: will not save state for later builds.')
+        return
+    }
+
+    if (!core.getState(CACHE_RESTORED_VAR)) {
+        core.info('Cache will not be saved: not restored in main action step.')
         return
     }
 
     if (isCacheReadOnly()) {
         core.info('Cache is read-only: will not save state for use in subsequent builds.')
-        cacheListener.isCacheReadOnly = true
+        cacheListener.cacheReadOnly = true
         return
     }
 
+    await daemonController.stopAllDaemons()
+
+    if (isCacheCleanupEnabled()) {
+        core.info('Forcing cache cleanup.')
+        const cacheCleaner = new CacheCleaner(gradleUserHome, process.env['RUNNER_TEMP']!)
+        await cacheCleaner.forceCleanup()
+    }
+
     await core.group('Caching Gradle state', async () => {
         return new GradleStateCache(gradleUserHome).save(cacheListener)
     })
 }
-
-function shouldSaveCaches(): boolean {
-    if (isCacheDisabled()) {
-        core.info('Cache is disabled: will not save state for later builds.')
-        return false
-    }
-
-    if (!core.getState(CACHE_RESTORED_VAR)) {
-        core.info('Cache will not be saved: not restored in main action step.')
-        return false
-    }
-
-    return true
-}

src/daemon-controller.ts

@@ -0,0 +1,36 @@
+import * as core from '@actions/core'
+import * as exec from '@actions/exec'
+import * as fs from 'fs'
+import * as path from 'path'
+import {BuildResult} from './build-results'
+
+export class DaemonController {
+    private readonly gradleHomes
+
+    constructor(buildResults: BuildResult[]) {
+        const allHomes = buildResults.map(buildResult => buildResult.gradleHomeDir)
+        this.gradleHomes = Array.from(new Set(allHomes))
+    }
+
+    async stopAllDaemons(): Promise<void> {
+        core.info('Stopping all Gradle daemons before saving Gradle User Home state')
+
+        const executions: Promise<number>[] = []
+        const args = ['--stop']
+
+        for (const gradleHome of this.gradleHomes) {
+            const executable = path.resolve(gradleHome, 'bin', 'gradle')
+            if (!fs.existsSync(executable)) {
+                core.warning(`Gradle executable not found at ${executable}. Could not stop Gradle daemons.`)
+                continue
+            }
+            core.info(`Stopping Gradle daemons for ${gradleHome}`)
+            executions.push(
+                exec.exec(executable, args, {
+                    ignoreReturnCode: true
+                })
+            )
+        }
+        await Promise.all(executions)
+    }
+}

src/job-summary.ts

@@ -1,18 +1,6 @@
 import * as core from '@actions/core'
-import fs from 'fs'
-import path from 'path'
-import {logCachingReport, CacheListener} from './cache-reporting'
-
-export interface BuildResult {
-    get rootProjectName(): string
-    get rootProjectDir(): string
-    get requestedTasks(): string
-    get gradleVersion(): string
-    get gradleHomeDir(): string
-    get buildFailed(): boolean
-    get buildScanUri(): string
-    get buildScanFailed(): boolean
-}
+import {BuildResult} from './build-results'
+import {writeCachingReport, CacheListener, logCachingReport} from './cache-reporting'
 
 export async function writeJobSummary(buildResults: BuildResult[], cacheListener: CacheListener): Promise<void> {
     core.info('Writing job summary')
@@ -23,23 +11,19 @@ export async function writeJobSummary(buildResults: BuildResult[], cacheListener
         writeSummaryTable(buildResults)
     }
 
-    logCachingReport(cacheListener)
+    writeCachingReport(cacheListener)
 
     await core.summary.write()
 }
 
-export function loadBuildResults(): BuildResult[] {
-    const buildResultsDir = path.resolve(process.env['RUNNER_TEMP']!, '.build-results')
-    if (!fs.existsSync(buildResultsDir)) {
-        return []
+export async function logJobSummary(buildResults: BuildResult[], cacheListener: CacheListener): Promise<void> {
+    if (buildResults.length === 0) {
+        core.debug('No Gradle build results found. Summary table will not be logged.')
+    } else {
+        logSummaryTable(buildResults)
     }
 
-    return fs.readdirSync(buildResultsDir).map(file => {
-        // Every file in the .build-results dir should be a BuildResults JSON
-        const filePath = path.join(buildResultsDir, file)
-        const content = fs.readFileSync(filePath, 'utf8')
-        return JSON.parse(content) as BuildResult
-    })
+    logCachingReport(cacheListener)
 }
 
 function writeSummaryTable(results: BuildResult[]): void {
@@ -92,3 +76,19 @@ function renderBuildScanBadge(outcomeText: string, outcomeColor: string, targetU
     const badgeHtml = `<img src="${badgeUrl}" alt="Build Scan ${outcomeText}" />`
     return `<a href="${targetUrl}" rel="nofollow">${badgeHtml}</a>`
 }
+
+function logSummaryTable(results: BuildResult[]): void {
+    core.info('============================')
+    core.info('Gradle Builds')
+    core.info('----------------------------')
+    core.info('Root Project | Requested Tasks | Gradle Version | Build Outcome | Build Scan™')
+    core.info('----------------------------')
+    for (const result of results) {
+        core.info(
+            `${result.rootProjectName} | ${result.requestedTasks} | ${result.gradleVersion} | ${
+                result.buildFailed ? 'FAILED' : 'SUCCESS'
+            } | ${result.buildScanFailed ? 'Publish failed' : result.buildScanUri}`
+        )
+    }
+    core.info('============================')
+}

src/resources/init-scripts/build-result-capture-service.plugin.groovy

@@ -45,9 +45,15 @@ abstract class BuildResultsRecorder implements BuildService<BuildResultsRecorder
             buildScanFailed: false
         ]
 
-        def buildResultsDir = new File(System.getenv("RUNNER_TEMP"), ".build-results")
+        def runnerTempDir = System.getenv("RUNNER_TEMP")
+        def githubActionStep = System.getenv("GITHUB_ACTION")
+        if (!runnerTempDir || !githubActionStep) {
+            return
+        }
+        
+        def buildResultsDir = new File(runnerTempDir, ".build-results")
         buildResultsDir.mkdirs()
-        def buildResultsFile = new File(buildResultsDir, System.getenv("GITHUB_ACTION") + getParameters().getInvocationId().get() + ".json")
+        def buildResultsFile = new File(buildResultsDir, githubActionStep + getParameters().getInvocationId().get() + ".json")
         buildResultsFile << groovy.json.JsonOutput.toJson(buildResults)
     }
 }

src/resources/init-scripts/build-result-capture.init.gradle

@@ -32,7 +32,8 @@ if (isTopLevelBuild) {
             if (gradle.rootProject.pluginManager.hasPlugin("com.gradle.build-scan")) {
                 captureUsingBuildScanPublished(gradle.rootProject.extensions["buildScan"], gradle.rootProject, invocationId)
             }
-            // We  need to capture in buildFinished in case the plugin is applied but no build scan is published
+            // Always attempt to capture in buildFinished in case the plugin is applied but no build scan is published
+            // The `buildScanPublished` results will NOT be overwritten by this call
             captureUsingBuildFinished(gradle, invocationId)
         }
     }
@@ -106,9 +107,15 @@ class BuildResults {
     }
 
     def writeToResultsFile(boolean overwrite) {
-        def buildResultsDir = new File(System.getenv("RUNNER_TEMP"), ".build-results")
+        def runnerTempDir = System.getenv("RUNNER_TEMP")
+        def githubActionStep = System.getenv("GITHUB_ACTION")
+        if (!runnerTempDir || !githubActionStep) {
+            return
+        }
+        
+        def buildResultsDir = new File(runnerTempDir, ".build-results")
         buildResultsDir.mkdirs()
-        def buildResultsFile = new File(buildResultsDir, System.getenv("GITHUB_ACTION") + invocationId + ".json")
+        def buildResultsFile = new File(buildResultsDir, githubActionStep + invocationId + ".json")
 
         // Overwrite any contents written by buildFinished or build service, since this result is a superset.
         if (buildResultsFile.exists()) {

src/setup-gradle.ts

@@ -1,13 +1,14 @@
 import * as core from '@actions/core'
 import * as exec from '@actions/exec'
 import {SUMMARY_ENV_VAR} from '@actions/core/lib/summary'
-import * as fs from 'fs'
 import * as path from 'path'
 import * as os from 'os'
 import * as caches from './caches'
 
+import {logJobSummary, writeJobSummary} from './job-summary'
+import {loadBuildResults} from './build-results'
 import {CacheListener} from './cache-reporting'
-import {BuildResult, loadBuildResults, writeJobSummary} from './job-summary'
+import {DaemonController} from './daemon-controller'
 
 const GRADLE_SETUP_VAR = 'GRADLE_BUILD_ACTION_SETUP_COMPLETED'
 const GRADLE_USER_HOME = 'GRADLE_USER_HOME'
@@ -50,20 +51,20 @@ export async function complete(): Promise<void> {
         core.info('Gradle setup post-action only performed for first gradle-build-action step in workflow.')
         return
     }
+    core.info('In final post-action step, saving state and writing summary')
 
     const buildResults = loadBuildResults()
 
-    core.info('Stopping all Gradle daemons')
-    await stopAllDaemons(getUniqueGradleHomes(buildResults))
-
-    core.info('In final post-action step, saving state and writing summary')
-    const cacheListener: CacheListener = CacheListener.rehydrate(core.getState(CACHE_LISTENER))
-
     const gradleUserHome = core.getState(GRADLE_USER_HOME)
-    await caches.save(gradleUserHome, cacheListener)
+    const cacheListener: CacheListener = CacheListener.rehydrate(core.getState(CACHE_LISTENER))
+    const daemonController = new DaemonController(buildResults)
+
+    await caches.save(gradleUserHome, cacheListener, daemonController)
 
     if (shouldGenerateJobSummary()) {
-        writeJobSummary(buildResults, cacheListener)
+        await writeJobSummary(buildResults, cacheListener)
+    } else {
+        logJobSummary(buildResults, cacheListener)
     }
 }
 
@@ -92,28 +93,3 @@ async function determineUserHome(): Promise<string> {
     core.debug(`Determined user.home from java -version output: '${userHome}'`)
     return userHome
 }
-
-function getUniqueGradleHomes(buildResults: BuildResult[]): string[] {
-    const gradleHomes = buildResults.map(buildResult => buildResult.gradleHomeDir)
-    return Array.from(new Set(gradleHomes))
-}
-
-async function stopAllDaemons(gradleHomes: string[]): Promise<void> {
-    const executions: Promise<number>[] = []
-    const args = ['--stop']
-
-    for (const gradleHome of gradleHomes) {
-        const executable = path.resolve(gradleHome, 'bin', 'gradle')
-        if (!fs.existsSync(executable)) {
-            core.warning(`Gradle executable not found at ${executable}. Could not stop Gradle daemons.`)
-            continue
-        }
-        core.info(`Stopping Gradle daemons in ${gradleHome}`)
-        executions.push(
-            exec.exec(executable, args, {
-                ignoreReturnCode: true
-            })
-        )
-    }
-    await Promise.all(executions)
-}

test/init-scripts/settings.gradle

@@ -1 +1,14 @@
+plugins {
+    id "com.gradle.enterprise" version "3.11.1"
+    id "com.gradle.common-custom-user-data-gradle-plugin" version "1.8"
+}
+
+gradleEnterprise {
+    buildScan {
+        termsOfServiceUrl = "https://gradle.com/terms-of-service"
+        termsOfServiceAgree = "yes"
+        publishAlways()
+        uploadInBackground = false
+    }
+}
 rootProject.name = 'test-init-scripts'

test/init-scripts/src/test/groovy/com/gradle/gradlebuildaction/BaseInitScriptTest.groovy

@@ -200,20 +200,17 @@ task expectFailure {
         File initScriptsDir = new File(testProjectDir, "initScripts")
         args << '-I' << new File(initScriptsDir, initScript).absolutePath
 
-        envVars['RUNNER_TEMP'] = testProjectDir.absolutePath
-        envVars['GITHUB_ACTION'] = 'github-step-id'
+        envVars.putIfAbsent('RUNNER_TEMP', testProjectDir.absolutePath)
+        envVars.putIfAbsent('GITHUB_ACTION', 'github-step-id')
 
         def runner = ((DefaultGradleRunner) GradleRunner.create())
             .withJvmArguments(jvmArgs)
             .withGradleVersion(gradleVersion.version)
             .withProjectDir(testProjectDir)
             .withArguments(args)
+            .withEnvironment(envVars)
             .forwardOutput()
 
-        if (envVars) {
-            runner.withEnvironment(envVars)
-        }
-
         runner
     }
 

test/init-scripts/src/test/groovy/com/gradle/gradlebuildaction/TestBuildResultRecorder.groovy

@@ -134,6 +134,20 @@ class TestBuildResultRecorder extends BaseInitScriptTest {
         testGradleVersion << ALL_VERSIONS
     }
 
+    def "produces no build results file when GitHub env vars not set with #testGradleVersion"() {
+        assumeTrue testGradleVersion.compatibleWithCurrentJvm
+
+        when:
+        run(['help'], initScript, testGradleVersion.gradleVersion, [], [RUNNER_TEMP: '', GITHUB_ACTION: ''])
+
+        then:
+        def buildResultsDir = new File(testProjectDir, '.build-results')
+        assert !buildResultsDir.exists()
+
+        where:
+        testGradleVersion << ALL_VERSIONS
+    }
+
     void assertResults(String task, TestGradleVersion testGradleVersion, boolean hasFailure, boolean hasBuildScan, boolean scanUploadFailed = false) {
         def results = new JsonSlurper().parse(buildResultFile)
         assert results['rootProjectName'] == ROOT_PROJECT_NAME

test/jest/cache-cleanup.test.ts

@@ -0,0 +1,87 @@
+import * as exec from '@actions/exec'
+import fs from 'fs'
+import path from 'path'
+import {CacheCleaner} from '../../src/cache-cleaner'
+
+jest.setTimeout(120000)
+
+test('will cleanup unused dependency jars and build-cache entries', async () => {
+    const projectRoot = prepareTestProject()
+    const gradleUserHome = path.resolve(projectRoot, 'HOME')
+    const tmpDir = path.resolve(projectRoot, 'tmp')
+    const cacheCleaner = new CacheCleaner(gradleUserHome, tmpDir)
+
+    await runGradleBuild(projectRoot, 'build', '3.1')
+    
+    await cacheCleaner.prepare()
+
+    await runGradleBuild(projectRoot, 'build', '3.1.1')
+
+    const commonsMath31 = path.resolve(gradleUserHome, "caches/modules-2/files-2.1/org.apache.commons/commons-math3/3.1")
+    const commonsMath311 = path.resolve(gradleUserHome, "caches/modules-2/files-2.1/org.apache.commons/commons-math3/3.1.1")
+    const buildCacheDir = path.resolve(gradleUserHome, "caches/build-cache-1")
+
+    expect(fs.existsSync(commonsMath31)).toBe(true)
+    expect(fs.existsSync(commonsMath311)).toBe(true)
+    expect(fs.readdirSync(buildCacheDir).length).toBe(4)
+
+    await cacheCleaner.forceCleanup()
+
+    expect(fs.existsSync(commonsMath31)).toBe(false)
+    expect(fs.existsSync(commonsMath311)).toBe(true)
+    expect(fs.readdirSync(buildCacheDir).length).toBe(3)
+})
+
+test('will cleanup unused gradle versions', async () => {
+    const projectRoot = prepareTestProject()
+    const gradleUserHome = path.resolve(projectRoot, 'HOME')
+    const tmpDir = path.resolve(projectRoot, 'tmp')
+    const cacheCleaner = new CacheCleaner(gradleUserHome, tmpDir)
+
+    // Initialize HOME with 2 different Gradle versions
+    await runGradleWrapperBuild(projectRoot, 'build')
+    await runGradleBuild(projectRoot, 'build')
+    
+    await cacheCleaner.prepare()
+
+    // Run with only one of these versions
+    await runGradleBuild(projectRoot, 'build')
+
+    const gradle733 = path.resolve(gradleUserHome, "caches/7.3.3")
+    const wrapper733 = path.resolve(gradleUserHome, "wrapper/dists/gradle-7.3.3-bin")
+    const gradleCurrent = path.resolve(gradleUserHome, "caches/7.5.1")
+
+    expect(fs.existsSync(gradle733)).toBe(true)
+    expect(fs.existsSync(wrapper733)).toBe(true)
+    expect(fs.existsSync(gradleCurrent)).toBe(true)
+
+    await cacheCleaner.forceCleanup()
+
+    expect(fs.existsSync(gradle733)).toBe(false)
+    expect(fs.existsSync(wrapper733)).toBe(false)
+    expect(fs.existsSync(gradleCurrent)).toBe(true)
+})
+
+async function runGradleBuild(projectRoot: string, args: string, version: string = '3.1'): Promise<void> {
+    const status31 = await exec.exec(`gradle -g HOME --no-daemon --build-cache -Dcommons_math3_version="${version}" ${args}`, [], {
+        cwd: projectRoot
+    })
+    console.log(`Gradle User Home initialized with commons_math3_version=${version} ${args}`)
+}
+
+async function runGradleWrapperBuild(projectRoot: string, args: string, version: string = '3.1'): Promise<void> {
+    const status31 = await exec.exec(`./gradlew -g HOME --no-daemon --build-cache -Dcommons_math3_version="${version}" ${args}`, [], {
+        cwd: projectRoot
+    })
+    console.log(`Gradle User Home initialized with commons_math3_version="${version}" ${args}`)
+}
+
+function prepareTestProject(): string {
+    const projectRoot = 'test/jest/resources/cache-cleanup'
+    fs.rmSync(path.resolve(projectRoot, 'HOME'), { recursive: true, force: true })
+    fs.rmSync(path.resolve(projectRoot, 'tmp'), { recursive: true, force: true })
+    fs.rmSync(path.resolve(projectRoot, 'build'), { recursive: true, force: true })
+    fs.rmSync(path.resolve(projectRoot, '.gradle'), { recursive: true, force: true })
+    return projectRoot
+}
+

test/jest/resources/cache-cleanup/.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
+

test/jest/resources/cache-cleanup/.gitignore

@@ -0,0 +1,8 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build
+
+HOME
+tmp

test/jest/resources/cache-cleanup/build.gradle

@@ -0,0 +1,11 @@
+plugins {
+    id 'java-library'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    api "org.apache.commons:commons-math3:${System.properties['commons_math3_version']}"
+}

test/jest/resources/cache-cleanup/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

test/jest/resources/cache-cleanup/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 "$JAVACMD" "$@"

test/jest/resources/cache-cleanup/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

test/jest/resources/cache-cleanup/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'unused-dependencies'

test/jest/resources/cache-cleanup/src/main/java/unused/dependencies/Library.java

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