LFS Fixes

.github/actions/setup_env/action.yml

@@ -18,7 +18,7 @@ runs:
       - name: Generate Cache Key
         run: | 
           file_hash=$(cat conda-${{ inputs.os-label }}.lock | shasum -a 256 | cut -d' ' -f1)
-          echo "file_hash=$file_hash" >> "${GITHUB_OUTPUT}"
+          echo "file_hash=tardis-conda-env-${{ inputs.os-label }}-${file_hash}-v1" >> "${GITHUB_OUTPUT}"
         id: cache-environment-key
         shell: bash
 

.github/actions/setup_lfs/action.yml

@@ -1,12 +1,16 @@
 name: "Setup LFS"
-description: "Pull LFS repositories and caches them"
+description: "Sets up Git LFS, retrieves LFS cache and fails if cache is not available"
 
 
 inputs:
   regression-data-repo:
-    description: "tardis regression data repository"
+    description: "Repository containing regression data (format: owner/repo)"
     required: false
     default: "tardis-sn/tardis-regression-data"
+  atom-data-sparse:
+    description: "If true, only downloads atom_data/kurucz_cd23_chianti_H_He.h5 instead of full regression data"
+    required: false
+    default: 'false'
 
 runs:
   using: "composite"
@@ -16,37 +20,31 @@ runs:
       with:
         repository: ${{ inputs.regression-data-repo }}
         path: tardis-regression-data
+        sparse-checkout: ${{ inputs.atom-data-sparse == 'true' && 'atom_data/kurucz_cd23_chianti_H_He.h5' || '' }}
+        lfs: false
 
     - name: Create LFS file list
-      run: git lfs ls-files -l | cut -d' ' -f1 | sort > .lfs-assets-id
+      run: |
+        if [ "${{ inputs.atom-data-sparse }}" == "true" ]; then
+          echo "Using atom data sparse checkout"
+          echo "atom_data/kurucz_cd23_chianti_H_He.h5" > .lfs-files-list
+        else
+          echo "Using full repository checkout"
+          git lfs ls-files -l | cut -d' ' -f1 | sort > .lfs-files-list
+        fi
       working-directory: tardis-regression-data
       shell: bash
-
+    
     - name: Restore LFS cache
       uses: actions/cache/restore@v4
       id: lfs-cache-regression-data
       with:
         path: tardis-regression-data/.git/lfs
-        key: ${{ runner.os }}-lfs-${{ hashFiles('tardis-regression-data/.lfs-assets-id') }}-v1
-
-    - name: Git LFS Pull
-      run: git lfs pull
-      working-directory: tardis-regression-data
-      if: steps.lfs-cache-regression-data.outputs.cache-hit != 'true'
-      shell: bash
+        key: tardis-regression-${{ inputs.atom-data-sparse == 'true' && 'atom-data-sparse' || 'full-data' }}-${{ hashFiles('tardis-regression-data/.lfs-files-list') }}-${{ inputs.regression-data-repo }}-v1
+        fail-on-cache-miss: true
 
     - name: Git LFS Checkout
       run: git lfs checkout
       working-directory: tardis-regression-data
       if: steps.lfs-cache-regression-data.outputs.cache-hit == 'true'
       shell: bash
-
-    - name: Save LFS cache if not found
-      # uses fake ternary
-      # for reference: https://github.com/orgs/community/discussions/26738#discussioncomment-3253176
-      if: ${{ steps.lfs-cache-regression-data.outputs.cache-hit != 'true' && !contains(github.ref, 'merge') && always() || false }}
-      uses: actions/cache/save@v4
-      id: lfs-cache-regression-data-save
-      with:
-        path: tardis-regression-data/.git/lfs
-        key: ${{ runner.os }}-lfs-${{ hashFiles('tardis-regression-data/.lfs-assets-id') }}-v1

.github/workflows/benchmarks.yml

@@ -29,6 +29,12 @@ defaults:
     shell: bash -l {0}
 
 jobs:
+  test-cache:
+    uses: ./.github/workflows/lfs-cache.yml
+    with:
+      atom-data-sparse: false
+      regression-data-repo: tardis-sn/tardis-regression-data
+
   build:
     if: github.repository_owner == 'tardis-sn' &&
       (github.event_name == 'push' ||
@@ -37,6 +43,7 @@ jobs:
       (github.event_name == 'pull_request_target' &&
       contains(github.event.pull_request.labels.*.name, 'benchmarks')))
     runs-on: ubuntu-latest
+    needs: [test-cache]
     steps:
       - uses: actions/checkout@v4
         if: github.event_name != 'pull_request_target'
@@ -54,13 +61,10 @@ jobs:
         run: git fetch origin master:master
         if: github.event_name == 'pull_request_target'
 
-      - uses: actions/checkout@v4
+      - name: Setup LFS
+        uses: ./.github/actions/setup_lfs
         with:
-          repository: tardis-sn/tardis-regression-data
-          path: tardis-regression-data
-          lfs: true
-          sparse-checkout: |
-            atom_data/kurucz_cd23_chianti_H_He.h5
+          atom-data-sparse: true
 
       - name: Setup Mamba
         uses: mamba-org/setup-micromamba@v1

.github/workflows/build-docs.yml

@@ -36,6 +36,12 @@ defaults:
     shell: bash -l {0}
 
 jobs:
+  test-cache:
+    uses: ./.github/workflows/lfs-cache.yml
+    with:
+      atom-data-sparse: true
+      regression-data-repo: tardis-sn/tardis-regression-data
+
   check-for-changes:
     runs-on: ubuntu-latest
     if: ${{ !github.event.pull_request.draft }}
@@ -77,7 +83,7 @@ jobs:
 
   build-docs:
     runs-on: ubuntu-latest
-    needs: check-for-changes
+    needs: [test-cache, check-for-changes]
     if: needs.check-for-changes.outputs.trigger-check-outcome == 'success' || needs.check-for-changes.outputs.docs-check-outcome == 'success'
     steps:
       - uses: actions/checkout@v4
@@ -90,13 +96,10 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha }}
         if: github.event_name == 'pull_request_target'
 
-      - uses: actions/checkout@v4
+      - name: Setup LFS
+        uses: ./.github/actions/setup_lfs
         with:
-          repository: tardis-sn/tardis-regression-data
-          path: tardis-regression-data
-          lfs: true
-          sparse-checkout: |
-            atom_data/kurucz_cd23_chianti_H_He.h5
+          atom-data-sparse: true
 
       - name: Setup environment
         uses: ./.github/actions/setup_env

.github/workflows/lfs-cache.yml

@@ -0,0 +1,76 @@
+name: Save LFS Cache
+
+on:
+  workflow_call:
+    inputs:
+      atom-data-sparse:
+        description: "If true, only downloads atom_data/kurucz_cd23_chianti_H_He.h5"
+        required: false
+        default: false
+        type: boolean
+      regression-data-repo:
+        description: "Repository containing regression data (format: owner/repo)"
+        required: false
+        default: "tardis-sn/tardis-regression-data"
+        type: string
+
+defaults:
+  run:
+    shell: bash -l {0}
+
+concurrency:
+  # Only one workflow can run at a time
+  # the workflow group is a unique identifier and contains the workflow name, pull request number, atom data sparse, and regression data repo
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}-${{ inputs.atom-data-sparse == 'true' && 'atom-data-sparse' || 'full-data' }}-${{ inputs.regression-data-repo }}
+  cancel-in-progress: true
+
+
+jobs:
+  lfs-cache:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          repository: ${{ inputs.regression-data-repo }}
+          path: tardis-regression-data
+          sparse-checkout: ${{ inputs.atom-data-sparse == 'true' && 'atom_data/kurucz_cd23_chianti_H_He.h5' || '' }}
+
+      - name: Create LFS file list
+        run: |
+          if [ "${{ inputs.atom-data-sparse }}" == "true" ]; then
+            echo "Using atom data sparse checkout"
+            echo "atom_data/kurucz_cd23_chianti_H_He.h5" > .lfs-files-list
+          else
+            echo "Using full repository checkout"
+            git lfs ls-files -l | cut -d' ' -f1 | sort > .lfs-files-list
+          fi
+        working-directory: tardis-regression-data
+
+
+      - name: Test cache availability
+        uses: actions/cache/restore@v4
+        id: test-lfs-cache-regression-data
+        with:
+          path: tardis-regression-data/.git/lfs
+          key: tardis-regression-${{ inputs.atom-data-sparse == 'true' && 'atom-data-sparse' || 'full-data' }}-${{ hashFiles('tardis-regression-data/.lfs-files-list') }}-${{ inputs.regression-data-repo }}-v1
+          lookup-only: true
+
+      - name: Git LFS Pull Atom Data
+        run: git lfs pull --include-ref=atom_data/kurucz_cd23_chianti_H_He.h5
+        if: ${{ inputs.atom-data-sparse == true && steps.test-lfs-cache-regression-data.outputs.cache-hit != 'true' }}
+        working-directory: tardis-regression-data
+
+      - name: Git LFS Pull Full Data
+        run: git lfs pull
+        if: ${{ inputs.atom-data-sparse == false && steps.test-lfs-cache-regression-data.outputs.cache-hit != 'true' }}
+        working-directory: tardis-regression-data
+
+      - name: Git LFS Checkout
+        run: git lfs checkout
+        working-directory: tardis-regression-data
+
+      - name: Save LFS cache if not found
+        uses: actions/cache/save@v4
+        with:
+          path: tardis-regression-data/.git/lfs
+          key: tardis-regression-${{ inputs.atom-data-sparse == true && 'atom-data-sparse' || 'full-data' }}-${{ hashFiles('tardis-regression-data/.lfs-files-list') }}-${{ inputs.regression-data-repo }}-v1

.github/workflows/tests.yml

@@ -38,9 +38,16 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  test-cache:
+    uses: ./.github/workflows/lfs-cache.yml
+    with:
+      atom-data-sparse: false
+      regression-data-repo: tardis-sn/tardis-regression-data
+
   tests:
     name: ${{ matrix.continuum }} continuum ${{ matrix.os }} ${{ inputs.pip_git && 'pip tests enabled' || '' }}
     if: github.repository_owner == 'tardis-sn'
+    needs: [test-cache]
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false

docs/contributing/development/continuous_integration.rst

@@ -27,6 +27,30 @@ TARDIS Pipelines
 
 Brief description of pipelines already implemented on TARDIS
 
+Cache Keys in TARDIS CI
+-----------------------
+
+TARDIS uses specific cache key formats to efficiently store and retrieve data during CI runs:
+
+1. **Regression Data Cache Keys**
+   - Format: ``tardis-regression-<data-type>-<hash>-v1``
+   - Examples:
+     - ``tardis-regression-atom-data-sparse-<hash>-v1`` - For atomic data cache
+     - ``tardis-regression-full-data-<hash>-v1`` - For full TARDIS regression data cache
+   - Used in: ``setup_lfs`` action
+
+2. **Environment Cache Keys**
+   - Format: ``tardis-conda-env-<os-label>-<hash>-v1``
+   - Examples:
+     - ``tardis-conda-env-linux-<hash>-v1`` - For Linux conda environment
+     - ``tardis-conda-env-macos-<hash>-v1`` - For macOS conda environment
+   - Used in: ``setup_env`` action
+
+.. warning::
+   - The version suffix (-v1) allows for future cache invalidation if needed.
+   - Sometimes the cache might not be saved due to race conditions between parallel jobs. Please check workflow runs when testing new regression data for cache misses to avoid consuming LFS quota.
+
+
 Streamlined Steps for TARDIS Pipelines
 ========================================
 

docs/contributing/development/running_tests.rst

@@ -62,7 +62,7 @@ Or, to run tests for a particular file or directory
     To prevent leaking LFS quota, tests have been disabled on forks.
     If, by any chance, you need to run tests on your fork, make sure to run the tests workflow on master branch first.
     The LFS cache generated in the master branch should be available in all child branches. 
-    You can check if cache was generated by looking in the ``Restore LFS Cache`` step of the workflow run. 
+    You can check if cache was generated by looking in the ``Setup LFS`` step of the workflow run. 
     Cache can also be found under the "Management" Section under "Actions" tab.
 
 Generating Plasma Reference