AAE-18301 new action to clean GH cache after pr merge (#381)

[skip ci]

.github/actions/gh-cache-cleanup-on-merge/action.yml

@@ -0,0 +1,29 @@
+name: "GH cache cleanup"
+description: "Performs the cleanup of cache entries related with already closed PR"
+inputs:
+  token:
+    description: The GH token
+    required: true
+runs:
+  using: composite
+  steps:
+    - name: Cache cleanup
+      shell: bash
+      run: |
+        gh extension install actions/gh-actions-cache
+
+        echo "Fetching list of cache key"
+        cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 | cut -f 1 )
+
+        ## Setting this to not fail the workflow while deleting cache keys.
+        set +e
+        echo "Deleting caches..."
+        for cacheKey in $cacheKeysForPR
+        do
+            gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
+        done
+        echo "Done"
+      env:
+        GH_TOKEN: ${{ inputs.token }}
+        REPO: ${{ github.repository }}
+        BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge

.github/dependabot.yml

@@ -75,6 +75,10 @@ updates:
     directory: "/.github/actions/get-commit-message"
     schedule:
       interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/.github/actions/gh-cache-cleanup-on-merge"
+    schedule:
+      interval: "weekly"
   - package-ecosystem: "github-actions"
     directory: "/.github/actions/git-check-existing-tag"
     schedule:

docs/README.md

@@ -1286,6 +1286,26 @@ Runs Veracode Source Clear Scan
           srcclr-install-options: '-DskipTestModules' # optional, additional maven options
 ```
 
+### github cache cleanup
+
+Performs the cleanup of cache entries related with already closed PR
+
+```yaml
+name: Cleanup caches for work branch
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: Alfresco/alfresco-build-tools/.github/actions/gh-cache-cleanup-on-merge@ref
+        with:
+          token: ${{ secrets.GH_TOKEN }}
+```
+
 ## Reusable workflows provided by us
 
 ### helm-publish-new-package-version.yml

version.txt

@@ -1 +1 @@
-v3.8.1
+v3.9.0