Enable wrapper validation by default

- Add 'allow-snapshot-wrappers' input parameter
- Default 'validate-wrappers' to 'true'

Fixes #12

.github/actions/init-integ-test/action.yml

@@ -9,6 +9,11 @@ runs:
         distribution: 'temurin'
         java-version: 11
 
+    - name: Configure environment
+      shell: bash
+      run: |
+        echo "ALLOWED_GRADLE_WRAPPER_CHECKSUMS=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" >> "$GITHUB_ENV"
+
     # Downloads a 'dist' directory artifact that was uploaded in an earlier 'build-dist' step
     - name: Download dist
       if: ${{ env.SKIP_DIST != 'true' && !env.ACT }}

.github/workflows/integ-test-wrapper-validation.yml

@@ -29,8 +29,8 @@ jobs:
     - name: Run wrapper-validation-action
       id: setup-gradle
       uses: ./setup-gradle
-      with:
+      env:
-        validate-wrappers: true
+        ALLOWED_GRADLE_WRAPPER_CHECKSUMS: ''
       continue-on-error: true
 
     - name: Check failure

dependency-submission/action.yml

@@ -172,6 +172,21 @@ inputs:
     description: The Develocity short-lived access tokens expiry in hours. Default is 2 hours.
     required: false
 
+  # Wrapper validation configuration
+  validate-wrappers:
+    description: |
+      When 'true' the action will automatically validate all wrapper jars found in the repository.
+      If the wrapper checksums are not valid, the action will fail.
+    required: false
+    default: false
+
+  allow-snapshot-wrappers:
+    description: |
+      When 'true', wrapper validation will include the checksums of snapshot wrapper jars. 
+      Use this if you are running with nightly or snapshot versions of the Gradle wrapper.
+    required: false
+    default: false
+
   # DEPRECATED ACTION INPUTS
 
   # EXPERIMENTAL ACTION INPUTS

docs/setup-gradle.md

@@ -515,14 +515,30 @@ Since Gradle applies init scripts in alphabetical order, one way to ensure this
 
 ## Gradle Wrapper validation
 
-Instead of using the [wrapper-validation action](./wrapper-validation.md) separately, you can enable
+By default, this action will perform the same wrapper validation as is performed by the dedicated 
-wrapper validation directly in your Setup Gradle step.
+[wrapper-validation action](./wrapper-validation.md). 
+This means that invalid wrapper jars will be automatically detected when using `setup-gradle`. 
+
+If you do not want wrapper-validation to occur automatically, you can disable it:
+
+```yaml
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v3
+      with:
+        validate-wrappers: false
+```
+
+If your repository uses snapshot versions of the Gradle wrapper, such as nightly builds, then you'll need to 
+explicitly allow snapshot wrappers in wrapper validation.
+These are not allowed by default.
+
 
 ```yaml
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@v3
       with:
         validate-wrappers: true
+        allow-snapshot-wrappers: true
 ```
 
 If you need more advanced configuration, then you're advised to continue using a separate workflow step

docs/wrapper-validation.md

@@ -4,6 +4,9 @@ This action validates the checksums of _all_ [Gradle Wrapper](https://docs.gradl
 
 The action should be run in the root of the repository, as it will recursively search for any files named `gradle-wrapper.jar`.
 
+The `setup-gradle` action will perform wrapper validation on each execution. If you are using `setup-gradle` in your
+workflows, it is unlikely that you will need to use this action.
+
 ## The Gradle Wrapper Problem in Open Source
 
 The `gradle-wrapper.jar` is a binary blob of executable code that is checked into nearly

setup-gradle/action.yml

@@ -190,9 +190,16 @@ inputs:
   # Wrapper validation configuration
   validate-wrappers:
     description: |
-      When 'true', the action will perform the 'wrapper-validation' action automatically.
+      When 'true' (the default) the action will automatically validate all wrapper jars found in the repository.
       If the wrapper checksums are not valid, the action will fail.
     required: false
+    default: true
+
+  allow-snapshot-wrappers:
+    description: |
+      When 'true', wrapper validation will include the checksums of snapshot wrapper jars. 
+      Use this if you are running with nightly or snapshot versions of the Gradle wrapper.
+    required: false
     default: false
 
   # DEPRECATED ACTION INPUTS

sources/src/actions/setup-gradle/main.ts

@@ -6,7 +6,7 @@ import {
     CacheConfig,
     DependencyGraphConfig,
     GradleExecutionConfig,
-    doValidateWrappers,
+    WrapperValidationConfig,
     getActionId,
     setActionId
 } from '../../configuration'
@@ -26,10 +26,7 @@ export async function run(): Promise<void> {
 
         setActionId('gradle/actions/setup-gradle')
 
-        // Check for invalid wrapper JARs if requested
+        await setupGradle.validateWrappers(new WrapperValidationConfig())
-        if (doValidateWrappers()) {
-            await setupGradle.checkNoInvalidWrapperJars()
-        }
 
         // Configure Gradle environment (Gradle User Home)
         await setupGradle.setup(new CacheConfig(), new BuildScanConfig())

sources/src/configuration.ts

@@ -357,8 +357,14 @@ export class GradleExecutionConfig {
     }
 }
 
-export function doValidateWrappers(): boolean {
+export class WrapperValidationConfig {
+    doValidateWrappers(): boolean {
         return getBooleanInput('validate-wrappers')
+    }
+
+    allowSnapshotWrappers(): boolean {
+        return getBooleanInput('allow-snapshot-wrappers')
+    }
 }
 
 // Internal parameters

sources/src/setup-gradle.ts

@@ -10,7 +10,13 @@ import * as buildScan from './develocity/build-scan'
 import {loadBuildResults, markBuildResultsProcessed} from './build-results'
 import {CacheListener, generateCachingReport} from './caching/cache-reporting'
 import {DaemonController} from './daemon-controller'
-import {BuildScanConfig, CacheConfig, SummaryConfig, getWorkspaceDirectory} from './configuration'
+import {
+    BuildScanConfig,
+    CacheConfig,
+    SummaryConfig,
+    WrapperValidationConfig,
+    getWorkspaceDirectory
+} from './configuration'
 import {findInvalidWrapperJars} from './wrapper-validation/validate'
 import {JobFailure} from './errors'
 
@@ -117,9 +123,16 @@ async function determineUserHome(): Promise<string> {
     return userHome
 }
 
-export async function checkNoInvalidWrapperJars(rootDir = getWorkspaceDirectory()): Promise<void> {
+export async function validateWrappers(
+    config: WrapperValidationConfig,
+    rootDir = getWorkspaceDirectory()
+): Promise<void> {
+    if (!config.doValidateWrappers()) {
+        return // Wrapper validation is disabled
+    }
+
     const allowedChecksums = process.env['ALLOWED_GRADLE_WRAPPER_CHECKSUMS']?.split(',') || []
-    const result = await findInvalidWrapperJars(rootDir, 1, false, allowedChecksums)
+    const result = await findInvalidWrapperJars(rootDir, 0, config.allowSnapshotWrappers(), allowedChecksums)
     if (result.isValid()) {
         core.info(result.toDisplayString())
     } else {

sources/src/wrapper-validation/checksums.ts

@@ -55,15 +55,15 @@ export async function fetchUnknownChecksums(
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
         (entry: any) => entry.wrapperChecksumUrl as string
     )
-    console.log(`Fetching checksums for ${checksumUrls.length} versions`)
     if (allowSnapshots) {
         await addDistributionSnapshotChecksums(checksumUrls)
     }
-    console.log(`Fetching checksums for ${checksumUrls.length} versions after snapshot check`)
+    const checksums = await Promise.all(
-    const checksums = await Promise.all(checksumUrls.map(async (url: string) => {
+        checksumUrls.map(async (url: string) => {
             // console.log(`Fetching checksum from ${url}`)
             return httpGetText(url)
-    }))
+        })
+    )
     return new Set(checksums)
 }
 
@@ -83,10 +83,10 @@ export async function addDistributionSnapshotChecksums(checksumUrls: string[]):
 
     // // Extract all wrapper checksum from the index page. These end in -wrapper.jar.sha256
     // // Load the HTML into cheerio
-    const $ = cheerio.load(indexPage);
+    const $ = cheerio.load(indexPage)
 
     // // Find all links ending with '-wrapper.jar.sha256'
-    const wrapperChecksumLinks = $('a[href$="-wrapper.jar.sha256"]');
+    const wrapperChecksumLinks = $('a[href$="-wrapper.jar.sha256"]')
 
     // build the absolute URL for each wrapper checksum
     wrapperChecksumLinks.each((index, element) => {