Finer grain cache.

- only consider the current workflow file (and not all of them) to
rebuild a cache.
- fix action files that were not taken into account for the key
- allow for workflows to specialize the cache (useful in case of
matrix)

.github/actions/cache/action.yml

@@ -4,27 +4,42 @@ inputs:
   use-rust:
     description: 'Whether rust is used'
     default: false
+  extra-key:
+    description: 'Extra cache key to use in the cache name. Useful when several caches are used in one workflow.'
+    default: ''
 outputs:
   ext-cache-hit:
     value: ${{ steps.cache-ext.outputs.cache-hit }}
 runs:
   using: "composite"
   steps:
+    - name: Find workflow path
+      env:
+        WORKFLOW_REF: ${{ github.workflow_ref }}
+      id: workflow-info
+      run: |
+        # Remove repository path.
+        END=(${WORKFLOW_REF/*.github/.github})
+        # Remove branch reference starting with @.
+        MIDDLE=(${END/%@*/})
+        echo "Current workflow path is: ${MIDDLE}"
+        echo "path=${MIDDLE}" >> "$GITHUB_OUTPUT"
+      shell: bash
     - name: Cache all of cargo
       if: ${{ inputs.use-rust }}
       uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
       continue-on-error: true
       with:
         path: ~/.cargo
-        key: cargo-registry-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('CMakeLists.txt', 'cmake/Modules/Findrav1e.cmake', 'cmake/Modules/LocalRav1e.cmake', 'ext/rav1e.cmd') }}-${{ github.job }}
+        key: cargo-registry-${{ runner.os }}-${{ runner.arch }}-${{ github.job }}-${{ inputs.extra-key }}-${{ hashFiles('.github/action/**', steps.workflow-info.outputs.path, 'CMakeLists.txt', 'cmake/Modules/Findrav1e.cmake', 'cmake/Modules/LocalRav1e.cmake', 'ext/rav1e.cmd') }}
     - name: Cache external dependencies in ext
       id: cache-ext
       uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
       with:
         path: ext
-        key: ext-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('.github/workflows/*', 'ext/*.cmd', 'ext/*.sh') }}-${{ github.job }}
+        key: ext-${{ runner.os }}-${{ runner.arch }}-${{ github.job }}-${{ inputs.extra-key }}-${{ hashFiles('.github/action/**', steps.workflow-info.outputs.path, 'ext/*.cmd', 'ext/*.sh') }}
     - name: Cache external dependencies in build/_deps
       uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # v4.0.2
       with:
         path: build/_deps
-        key: deps-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('.github/workflows/*', 'CMakeLists.txt', 'cmake/Modules/*') }}-${{ github.job }}
+        key: deps-${{ runner.os }}-${{ runner.arch }}-${{ github.job }}-${{ inputs.extra-key }}-${{ hashFiles('.github/action/**', steps.workflow-info.outputs.path, 'CMakeLists.txt', 'cmake/Modules/*') }}

.github/workflows/ci-mingw.yml

@@ -47,6 +47,8 @@ jobs:
           ninja:p
           zlib:p
     - uses: ./.github/actions/cache
+      with:
+        extra-key: ${{ matrix.sys }}
     - name: Print cmake version
       run: cmake --version
 

.github/workflows/ci-unix-static-av2.yml

@@ -48,6 +48,7 @@ jobs:
     - uses: ./.github/actions/cache
       with:
         use-rust: true
+        extra-key: ${{ matrix.also-enable-av1-codecs }}
     - name: Setup cmake
       uses: jwlawson/actions-setup-cmake@802fa1a2c4e212495c05bf94dba2704a92a472be # v2.0.2
       with:

.github/workflows/ci-unix-static-sanitized.yml

@@ -41,6 +41,8 @@ jobs:
         run: brew install aom dav1d imagemagick libpng
       - uses: ./.github/actions/cache
         id: cache
+        with:
+          extra-key: ${{ matrix.sanitizer }}
       - name: Build aom
         if: steps.cache.outputs.ext-cache-hit != 'true'
         working-directory: ./ext

.github/workflows/ci-unix-static.yml

@@ -53,6 +53,7 @@ jobs:
     - uses: ./.github/actions/cache
       with:
         use-rust: true
+        extra-key: ${{ matrix.build-type }}
     - name: Setup cmake
       if: runner.os == 'Linux'
       uses: jwlawson/actions-setup-cmake@802fa1a2c4e212495c05bf94dba2704a92a472be # v2.0.2