From 754181720483e1d9de02b4fa58cb16a7798c4367 Mon Sep 17 00:00:00 2001
From: Marie Backman <backmanma@ornl.gov>
Date: Tue, 10 Dec 2024 14:41:51 -0500
Subject: [PATCH] use the submodule commit as the test data cache key (#113)

---
 .github/workflows/actions.yml | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 9002225..55a5e50 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -29,12 +29,19 @@ jobs:
           mamba-version: "*"
           environment-file: environment.yml
 
+      - name: Generate cache key for submodule
+        id: generate-cache-key
+        run: |
+          # Get the submodule commit SHA
+          SUBMODULE_SHA=$(git submodule status | awk '{print $1}' | sha256sum | cut -d ' ' -f 1)
+          echo "SUBMODULE_KEY=$SUBMODULE_SHA" >> $GITHUB_ENV
+
       - name: Restore/save LFS files in cache
         id: cache-lfs
         uses: actions/cache@v4
         with:
           path: test/data/reflectivity_ui-data/
-          key: ${{ runner.os }}-lfs-files
+          key: submodule-${{ env.SUBMODULE_KEY }}
 
       - name: Pull LFS files for the submodule
         if: steps.cache-lfs.outputs.cache-hit != 'true'