Merge pull request #854 from gradle/dd/existing-gradle-home

- Report the cache as disabled when Gradle User Home exists #434 
- Allow cache restore over pre-existing Gradle User Home #480

.github/workflows/demo-job-summary.yml

@@ -41,3 +41,25 @@ jobs:
       working-directory: .github/workflow-samples/groovy-dsl
       continue-on-error: true
       run: ./gradlew not-a-real-task
+
+  pre-existing-gradle-home:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v3
+    - name: Build distribution
+      shell: bash
+      run: |
+        npm install
+        npm run build
+    - name: Pre-create Gradle User Home
+      shell: bash
+      run: |
+        mkdir ~/.gradle
+        mkdir ~/.gradle/caches
+        touch ~/.gradle/caches/dummy.txt
+    - name: Setup Gradle
+      uses: ./
+    - name: Run build
+      working-directory: .github/workflow-samples/groovy-dsl
+      run: ./gradlew assemble

.github/workflows/integ-test-restore-gradle-home.yml

@@ -99,3 +99,40 @@ jobs:
       working-directory: .github/workflow-samples/groovy-dsl
       run: ./gradlew test
 
+  # Test that a pre-existing gradle-user-home can be overwritten by the restored cache
+  pre-existing-gradle-home:
+    needs: seed-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: Pre-create Gradle User Home
+      shell: bash
+      run: |
+        mkdir -p ~/.gradle/caches
+        touch ~/.gradle/gradle.properties
+        touch ~/.gradle/caches/dummy.txt
+    - name: Setup Gradle
+      uses: ./
+      with:
+        cache-read-only: true
+        cache-overwrite-existing: true
+    - name: Check that pre-existing content still exists
+      shell: bash
+      run: |
+        if [ ! -e ~/.gradle/caches/dummy.txt ]; then
+          echo "::error ::Should find dummy.txt after cache restore"
+          exit 1
+        fi
+        if [ ! -e ~/.gradle/gradle.properties ]; then
+          echo "::error ::Should find gradle.properties after cache restore"
+          exit 1
+        fi
+    - name: Execute Gradle build with --offline
+      working-directory: .github/workflow-samples/groovy-dsl
+      run: ./gradlew test --offline

action.yml

@@ -35,6 +35,11 @@ inputs:
     required: false
     default: false
 
+  cache-overwrite-existing:
+    description: When 'true', a pre-existing Gradle User Home will not prevent the cache from being restored.
+    required: false
+    default: false
+
   gradle-home-cache-includes:
     description: Paths within Gradle User Home to cache.
     required: false

dist/main/index.js

@@ -73467,6 +73467,7 @@ class CacheListener {
         this.cacheReadOnly = false;
         this.cacheWriteOnly = false;
         this.cacheDisabled = false;
+        this.cacheDisabledReason = 'disabled';
     }
     get fullyRestored() {
         return this.cacheEntries.every(x => !x.wasRequestedButNotRestored());
@@ -73475,7 +73476,7 @@ class CacheListener {
         if (!cache.isFeatureAvailable())
             return 'not available';
         if (this.cacheDisabled)
-            return 'disabled';
+            return this.cacheDisabledReason;
         if (this.cacheWriteOnly)
             return 'write-only';
         if (this.cacheReadOnly)
@@ -73681,7 +73682,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
     });
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.tryDelete = exports.handleCacheFailure = exports.cacheDebug = exports.saveCache = exports.restoreCache = exports.hashStrings = exports.hashFileNames = exports.getUniqueLabelForJobInstanceValues = exports.getUniqueLabelForJobInstance = exports.getCacheKeyForJob = exports.getCacheKeyPrefix = exports.generateCacheKey = exports.CacheKey = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
+exports.tryDelete = exports.handleCacheFailure = exports.cacheDebug = exports.saveCache = exports.restoreCache = exports.hashStrings = exports.hashFileNames = exports.getUniqueLabelForJobInstanceValues = exports.getUniqueLabelForJobInstance = exports.getCacheKeyForJob = exports.getCacheKeyPrefix = exports.generateCacheKey = exports.CacheKey = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheOverwriteExisting = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
 const core = __importStar(__nccwpck_require__(2186));
 const cache = __importStar(__nccwpck_require__(7799));
 const github = __importStar(__nccwpck_require__(5438));
@@ -73713,6 +73714,10 @@ function isCacheWriteOnly() {
     return params.isCacheWriteOnly();
 }
 exports.isCacheWriteOnly = isCacheWriteOnly;
+function isCacheOverwriteExisting() {
+    return params.isCacheOverwriteExisting();
+}
+exports.isCacheOverwriteExisting = isCacheOverwriteExisting;
 function isCacheDebuggingEnabled() {
     return params.isCacheDebuggingEnabled();
 }
@@ -73963,10 +73968,15 @@ function restore(gradleUserHome, cacheListener) {
             return;
         }
         if (gradleStateCache.cacheOutputExists()) {
+            if (!(0, cache_utils_1.isCacheOverwriteExisting)()) {
                 core.info('Gradle User Home already exists: will not restore from cache.');
                 gradleStateCache.init();
+                cacheListener.cacheDisabled = true;
+                cacheListener.cacheDisabledReason = 'disabled due to pre-existing Gradle User Home';
                 return;
             }
+            core.info('Gradle User Home already exists: will overwrite with cached contents.');
+        }
         gradleStateCache.init();
         core.saveState(CACHE_RESTORED_VAR, true);
         if ((0, cache_utils_1.isCacheWriteOnly)()) {
@@ -74455,7 +74465,7 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.DependencyGraphOption = exports.getDependencyGraphOption = exports.isDependencyGraphEnabled = exports.isJobSummaryEnabled = exports.getGithubToken = exports.getJobMatrix = exports.getArguments = exports.getGradleExecutable = exports.getGradleVersion = exports.getBuildRootDirectory = exports.getCacheExcludes = exports.getCacheIncludes = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheStrictMatch = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
+exports.DependencyGraphOption = exports.getDependencyGraphOption = exports.isDependencyGraphEnabled = exports.isJobSummaryEnabled = exports.getGithubToken = exports.getJobMatrix = exports.getArguments = exports.getGradleExecutable = exports.getGradleVersion = exports.getBuildRootDirectory = exports.getCacheExcludes = exports.getCacheIncludes = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheStrictMatch = exports.isCacheOverwriteExisting = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
 const core = __importStar(__nccwpck_require__(2186));
 const string_argv_1 = __nccwpck_require__(9663);
 function isCacheDisabled() {
@@ -74470,6 +74480,10 @@ function isCacheWriteOnly() {
     return getBooleanInput('cache-write-only');
 }
 exports.isCacheWriteOnly = isCacheWriteOnly;
+function isCacheOverwriteExisting() {
+    return getBooleanInput('cache-overwrite-existing');
+}
+exports.isCacheOverwriteExisting = isCacheOverwriteExisting;
 function isCacheStrictMatch() {
     return getBooleanInput('gradle-home-cache-strict-match');
 }

dist/post/index.js

@@ -73467,6 +73467,7 @@ class CacheListener {
         this.cacheReadOnly = false;
         this.cacheWriteOnly = false;
         this.cacheDisabled = false;
+        this.cacheDisabledReason = 'disabled';
     }
     get fullyRestored() {
         return this.cacheEntries.every(x => !x.wasRequestedButNotRestored());
@@ -73475,7 +73476,7 @@ class CacheListener {
         if (!cache.isFeatureAvailable())
             return 'not available';
         if (this.cacheDisabled)
-            return 'disabled';
+            return this.cacheDisabledReason;
         if (this.cacheWriteOnly)
             return 'write-only';
         if (this.cacheReadOnly)
@@ -73681,7 +73682,7 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
     });
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.tryDelete = exports.handleCacheFailure = exports.cacheDebug = exports.saveCache = exports.restoreCache = exports.hashStrings = exports.hashFileNames = exports.getUniqueLabelForJobInstanceValues = exports.getUniqueLabelForJobInstance = exports.getCacheKeyForJob = exports.getCacheKeyPrefix = exports.generateCacheKey = exports.CacheKey = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
+exports.tryDelete = exports.handleCacheFailure = exports.cacheDebug = exports.saveCache = exports.restoreCache = exports.hashStrings = exports.hashFileNames = exports.getUniqueLabelForJobInstanceValues = exports.getUniqueLabelForJobInstance = exports.getCacheKeyForJob = exports.getCacheKeyPrefix = exports.generateCacheKey = exports.CacheKey = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheOverwriteExisting = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
 const core = __importStar(__nccwpck_require__(2186));
 const cache = __importStar(__nccwpck_require__(7799));
 const github = __importStar(__nccwpck_require__(5438));
@@ -73713,6 +73714,10 @@ function isCacheWriteOnly() {
     return params.isCacheWriteOnly();
 }
 exports.isCacheWriteOnly = isCacheWriteOnly;
+function isCacheOverwriteExisting() {
+    return params.isCacheOverwriteExisting();
+}
+exports.isCacheOverwriteExisting = isCacheOverwriteExisting;
 function isCacheDebuggingEnabled() {
     return params.isCacheDebuggingEnabled();
 }
@@ -73963,10 +73968,15 @@ function restore(gradleUserHome, cacheListener) {
             return;
         }
         if (gradleStateCache.cacheOutputExists()) {
+            if (!(0, cache_utils_1.isCacheOverwriteExisting)()) {
                 core.info('Gradle User Home already exists: will not restore from cache.');
                 gradleStateCache.init();
+                cacheListener.cacheDisabled = true;
+                cacheListener.cacheDisabledReason = 'disabled due to pre-existing Gradle User Home';
                 return;
             }
+            core.info('Gradle User Home already exists: will overwrite with cached contents.');
+        }
         gradleStateCache.init();
         core.saveState(CACHE_RESTORED_VAR, true);
         if ((0, cache_utils_1.isCacheWriteOnly)()) {
@@ -74323,7 +74333,7 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.DependencyGraphOption = exports.getDependencyGraphOption = exports.isDependencyGraphEnabled = exports.isJobSummaryEnabled = exports.getGithubToken = exports.getJobMatrix = exports.getArguments = exports.getGradleExecutable = exports.getGradleVersion = exports.getBuildRootDirectory = exports.getCacheExcludes = exports.getCacheIncludes = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheStrictMatch = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
+exports.DependencyGraphOption = exports.getDependencyGraphOption = exports.isDependencyGraphEnabled = exports.isJobSummaryEnabled = exports.getGithubToken = exports.getJobMatrix = exports.getArguments = exports.getGradleExecutable = exports.getGradleVersion = exports.getBuildRootDirectory = exports.getCacheExcludes = exports.getCacheIncludes = exports.isCacheCleanupEnabled = exports.isCacheDebuggingEnabled = exports.isCacheStrictMatch = exports.isCacheOverwriteExisting = exports.isCacheWriteOnly = exports.isCacheReadOnly = exports.isCacheDisabled = void 0;
 const core = __importStar(__nccwpck_require__(2186));
 const string_argv_1 = __nccwpck_require__(9663);
 function isCacheDisabled() {
@@ -74338,6 +74348,10 @@ function isCacheWriteOnly() {
     return getBooleanInput('cache-write-only');
 }
 exports.isCacheWriteOnly = isCacheWriteOnly;
+function isCacheOverwriteExisting() {
+    return getBooleanInput('cache-overwrite-existing');
+}
+exports.isCacheOverwriteExisting = isCacheOverwriteExisting;
 function isCacheStrictMatch() {
     return getBooleanInput('gradle-home-cache-strict-match');
 }

src/cache-reporting.ts

@@ -10,6 +10,7 @@ export class CacheListener {
     cacheReadOnly = false
     cacheWriteOnly = false
     cacheDisabled = false
+    cacheDisabledReason = 'disabled'
 
     get fullyRestored(): boolean {
         return this.cacheEntries.every(x => !x.wasRequestedButNotRestored())
@@ -17,7 +18,7 @@ export class CacheListener {
 
     get cacheStatus(): string {
         if (!cache.isFeatureAvailable()) return 'not available'
-        if (this.cacheDisabled) return 'disabled'
+        if (this.cacheDisabled) return this.cacheDisabledReason
         if (this.cacheWriteOnly) return 'write-only'
         if (this.cacheReadOnly) return 'read-only'
         return 'enabled'

src/cache-utils.ts

@@ -37,6 +37,10 @@ export function isCacheWriteOnly(): boolean {
     return params.isCacheWriteOnly()
 }
 
+export function isCacheOverwriteExisting(): boolean {
+    return params.isCacheOverwriteExisting()
+}
+
 export function isCacheDebuggingEnabled(): boolean {
     return params.isCacheDebuggingEnabled()
 }

src/caches.ts

@@ -1,5 +1,11 @@
 import * as core from '@actions/core'
-import {isCacheCleanupEnabled, isCacheDisabled, isCacheReadOnly, isCacheWriteOnly} from './cache-utils'
+import {
+    isCacheCleanupEnabled,
+    isCacheDisabled,
+    isCacheReadOnly,
+    isCacheWriteOnly,
+    isCacheOverwriteExisting
+} from './cache-utils'
 import {CacheListener} from './cache-reporting'
 import {DaemonController} from './daemon-controller'
 import {GradleStateCache} from './cache-base'
@@ -26,11 +32,16 @@ export async function restore(gradleUserHome: string, cacheListener: CacheListen
     }
 
     if (gradleStateCache.cacheOutputExists()) {
+        if (!isCacheOverwriteExisting()) {
             core.info('Gradle User Home already exists: will not restore from cache.')
             // Initialize pre-existing Gradle User Home.
             gradleStateCache.init()
+            cacheListener.cacheDisabled = true
+            cacheListener.cacheDisabledReason = 'disabled due to pre-existing Gradle User Home'
             return
         }
+        core.info('Gradle User Home already exists: will overwrite with cached contents.')
+    }
 
     gradleStateCache.init()
     // Mark the state as restored so that post-action will perform save.

src/input-params.ts

@@ -13,6 +13,10 @@ export function isCacheWriteOnly(): boolean {
     return getBooleanInput('cache-write-only')
 }
 
+export function isCacheOverwriteExisting(): boolean {
+    return getBooleanInput('cache-overwrite-existing')
+}
+
 export function isCacheStrictMatch(): boolean {
     return getBooleanInput('gradle-home-cache-strict-match')
 }