make manual vs auto ref a config option

Author: rochdev

.github/workflows/compute-workflow-parameters.yml

@@ -99,12 +99,37 @@ on:
         value: ${{ jobs.main.outputs.ref }}
 
 jobs:
-  main:
-    name: Get parameters
+  manual_ref:
+    if: inputs.ref != 'auto'
+    run: |
+      if [[ "${{ inputs.ref }}" != "" ]]; then
+        echo "ref=${{ inputs.ref }}" >> $GITHUB_OUTPUT
+      elif [[ "${{ github.repository }}" == "DataDog/system-tests" ]]; then
+        echo "ref=" >> $GITHUB_OUTPUT
+      else
+        echo "ref=main }}" >> $GITHUB_OUTPUT
+      fi
+
+  auto_ref:
+    if: inputs.ref == 'auto'
     runs-on: ubuntu-latest
     permissions:
       id-token: write # required to get an oidc token
       contents: read
+    steps:
+    - uses: ChristopherHX/oidc@73eee1ff03fdfce10eda179f617131532209edbd
+      id: oidc
+    - name: Compute ref
+      id: compute_ref
+      run: ref=${{ steps.oidc.outputs.job_workflow_repo_ref }}" >> $GITHUB_OUTPUT
+
+  main:
+    if: always() && !failure() && !cancelled()
+    name: Get parameters
+    runs-on: ubuntu-latest
+    needs:
+      - manual_ref
+      - auto_ref
     outputs:
       endtoend_defs_parallel_enable: ${{ steps.main.outputs.endtoend_defs_parallel_enable }}
       endtoend_defs_parallel_weblogs: ${{ steps.main.outputs.endtoend_defs_parallel_weblogs }}
@@ -122,18 +147,9 @@ jobs:
       unique_id: ${{ steps.unique_id.outputs.value }}
       ref: ${{ steps.compute_ref.outputs.ref }}
     steps:
-    - uses: ChristopherHX/oidc@45e798774435c73c1bbf62e2df0ba60f95cdb457
-      id: oidc
     - name: Compute ref
       id: compute_ref
-      run: |
-        if [[ "${{ inputs.ref }}" != "" ]]; then
-          echo "ref=${{ inputs.ref }}" >> $GITHUB_OUTPUT
-        elif [[ "${{ github.repository }}" == "DataDog/system-tests" ]]; then
-          echo "ref=" >> $GITHUB_OUTPUT
-        else
-          echo "ref=${{ steps.oidc.outputs.job_workflow_repo_ref }}" >> $GITHUB_OUTPUT
-        fi
+      run: echo "ref=${{ jobs.auto_ref.outputs.ref || jobs.manual_ref.outputs.ref }}" >> $GITHUB_OUTPUT
     - name: Checkout
       uses: actions/checkout@v4
       with: