Add installYq option to sync.py and cache downloads

Author: mbg

.github/workflows/__build-mode-autobuild.yml

@@ -3,6 +3,7 @@ description: "An end-to-end integration test of a Java repository built using 'b
 operatingSystems: ["ubuntu", "windows"]
 versions: ["linked", "nightly-latest"]
 installJava: "true"
+installYq: "true"
 steps:
   - name: Set up Java test repo configuration
     run: |
@@ -18,11 +19,6 @@ steps:
       languages: java
       tools: ${{ steps.prepare-test.outputs.tools-url }}
 
-  - name: Install yq
-    if: runner.os == 'Windows'
-    run: |
-      choco install yq -y
-
   - name: Validate database build mode
     run: |
       metadata_path="$RUNNER_TEMP/customDbLocation/java/codeql-database.yml"

pr-checks/checks/build-mode-autobuild.yml

@@ -223,6 +223,28 @@ def writeHeader(checkStream):
             }
         })
 
+    installYq = is_truthy(checkSpecification.get('installYq', ''))
+
+    if installYq:
+        steps.append({
+            'name': "Restore choco cache",
+            'if': "runner.os == 'Windows'",
+            'uses': 'actions/cache@v5',
+            'with': {
+                'key': 'windows-choco-cache',
+                'path': '${{ runner.temp }}/windows-choco-cache'
+            }
+        })
+        steps.append({
+            'name': 'Install yq',
+            'if': "runner.os == 'Windows'",
+            'shell': 'pwsh',
+            'env': {
+                'CACHE_DIR': '${{ runner.temp }}/windows-choco-cache'
+            },
+            'run': 'choco install yq -y --stoponfirstfailure --cache-location=${env:CACHE_DIR}',
+        })
+
     # If container initialisation steps are present in the check specification,
     # make sure to execute them first.
     if 'container' in checkSpecification and 'container-init-steps' in checkSpecification: