Deprecate 'wrapper-validation-action'

Deprecation warning will be emitted when we:
- Change 'wrapper-validation-action' to delegate to 'actions/wrapper-validation'
- Add the 'wrapper-validation-action' id as env var before delegating

docs/deprecation-upgrade-guide.md

@@ -23,6 +23,26 @@ with
     uses: gradle/actions/setup-gradle@v3
 ```
 
+## The action `gradle/wrapper-validation-action` has been replaced by `gradle/actions/wrapper-validation`
+
+To facilitate ongoing development, the `wrapper-validation-action` action implementation has been merged into 
+the https://github.com/gradle/actions repository, and the `gradle/wrapper-validation-action` has been replaced by the `gradle/actions/wrapper-validation` action.
+
+As of `v3.x`, the `gradle/wrapper-validation-action` and `gradle/actions/wrappper-validation` actions are 
+functionally identical, and are released with the same versions.
+
+In a future major version (likely `v4.x`) we will stop releasing new versions of `gradle/wrapper-validation-action`:
+development and releases will continue in the `gradle/actions/wrapper-validation` action.
+
+To convert your workflows, simply replace:
+```
+   uses: gradle/wrapper-validation-action@v3
+```
+with
+```
+    uses: gradle/actions/wrapper-validation@v3
+```
+
 ## Using the action to execute Gradle via the `arguments` parameter is deprecated
 
 The core functionality of the `setup-gradle` (and `gradle-build-action`) actions is to configure your

sources/src/deprecation-collector.ts

@@ -26,10 +26,10 @@ export function getDeprecations(): Deprecation[] {
     return recordedDeprecations
 }
 
-export function emitDeprecationWarnings(): void {
+export function emitDeprecationWarnings(hasJobSummary = true): void {
     if (recordedDeprecations.length > 0) {
         core.warning(
-            `This job uses deprecated functionality from the '${getActionId()}' action. Consult the Job Summary for more details.`
+            `This job uses deprecated functionality from the '${getActionId()}' action. Consult the ${hasJobSummary ? 'Job Summary' : 'logs'} for more details.`
         )
         for (const deprecation of recordedDeprecations) {
             core.info(`DEPRECATION: ${deprecation.message}. See ${deprecation.getDocumentationLink()}`)

sources/src/wrapper-validation/main.ts

@@ -2,10 +2,20 @@ import * as path from 'path'
 import * as core from '@actions/core'
 
 import * as validate from './validate'
+import {getActionId, setActionId} from '../configuration'
+import {recordDeprecation, emitDeprecationWarnings} from '../deprecation-collector'
 import {handleMainActionError} from '../errors'
 
 export async function run(): Promise<void> {
     try {
+        if (getActionId() === 'gradle/wrapper-validation-action') {
+            recordDeprecation(
+                'The action `gradle/wrapper-validation-action` has been replaced by `gradle/actions/wrapper-validation`'
+            )
+        } else {
+            setActionId('gradle/actions/wrapper-validation')
+        }
+
         const result = await validate.findInvalidWrapperJars(
             path.resolve('.'),
             +core.getInput('min-wrapper-count'),
@@ -22,6 +32,8 @@ export async function run(): Promise<void> {
                 core.setOutput('failed-wrapper', `${result.invalid.map(w => w.path).join('|')}`)
             }
         }
+
+        emitDeprecationWarnings(false)
     } catch (error) {
         handleMainActionError(error)
     }