Add more debug output: key-file, path input, expanded path, and archive path on save

README.md

@@ -3,13 +3,6 @@ Cache Action
 
 A Gitea Action that caches build files as `tar.xz` archives on the runner filesystem. Simple, fast, no external dependencies.
 
-## Branches
-
-| Branch | Purpose |
-|--------|---------|
-| `restore` | Restores cache archive if it exists |
-| `save` | Saves cache archive (use after build) |
-
 ## Inputs
 
 | Input | Description | Required | Default |
@@ -22,20 +15,20 @@ A Gitea Action that caches build files as `tar.xz` archives on the runner filesy
 
 | Output | Description |
 |--------|-------------|
-| `cache-hit` | `true` if exact key match found, `false` otherwise (restore only) |
+| `cache-hit` | `true` if exact key match found, `false` otherwise |
 
 ## How It Works
 
 1. Hashes `key-file` with SHA-256, combines with `key-prefix` as `<prefix>-<hash>`
 2. Stores archives at `~/.cache/.cache-store/<key>.tar.xz`
-3. `restore` branch extracts the archive, `save` branch creates one
+3. Restores by extracting the archive to `/`, saves by creating one
 
 ## Usage
 
 This action must be used **twice** in your workflow:
 
-1. **Before build** — use `@restore` to restore cache if it exists
+1. **Before build** — restores cache if it exists
-2. **After build** — use `@save` to save the cache archive
+2. **After build** — saves the cache archive (only on cache miss)
 
 ## Rust Example
 
@@ -54,7 +47,7 @@ jobs:
       - uses: actions/checkout@v4
 
       # 1. Restore cache before build
-      - uses: Actions/Cache@restore
+      - uses: Actions/Cache@main
         id: cache
         with:
           key-prefix: 'cargo-registry'
@@ -65,7 +58,7 @@ jobs:
         run: cargo build --release
 
       # 2. Save cache after build
-      - uses: Actions/Cache@save
+      - uses: Actions/Cache@main
         with:
           key-prefix: 'cargo-registry'
           key-file: 'Cargo.lock'
@@ -89,7 +82,7 @@ jobs:
       - uses: actions/checkout@v4
 
       # 1. Restore cache
-      - uses: Actions/Cache@restore
+      - uses: Actions/Cache@main
         id: cache
         with:
           key-prefix: 'rust'
@@ -104,7 +97,7 @@ jobs:
         run: cargo build --release
 
       # 2. Save cache
-      - uses: Actions/Cache@save
+      - uses: Actions/Cache@main
         with:
           key-prefix: 'rust'
           key-file: 'Cargo.lock'

action.yaml

@@ -0,0 +1,41 @@
+name: 'Cache Save'
+description: 'Save cache as tar.xz archive on the runner filesystem'
+inputs:
+  path:
+    description: 'Directory to cache'
+    required: false
+    default: ${{ github.workspace }}
+  key-prefix:
+    description: 'Prefix for the cache key'
+    required: true
+  key-file:
+    description: 'File to hash for the cache key'
+    required: true
+runs:
+  using: "composite"
+  steps:
+    - name: Save cache
+      shell: bash
+      run: |
+        CACHE_DIR="$HOME/.cache/.cache-store"
+        mkdir -p "$CACHE_DIR"
+
+        KEY_HASH=$(sha256sum "${{ inputs.key-file }}" | awk '{print $1}')
+        CACHE_KEY="${{ inputs.key-prefix }}-${KEY_HASH}"
+        ARCHIVE="${CACHE_DIR}/${CACHE_KEY}.tar.xz"
+
+        EXPANDED_PATH=$(eval echo "${{ inputs.path }}")
+
+        echo "Key file: ${{ inputs.key-file }}"
+        echo "Path input: ${{ inputs.path }}"
+        echo "Expanded path: ${EXPANDED_PATH}"
+        echo "Archive path: ${ARCHIVE}"
+
+        if [ ! -d "$EXPANDED_PATH" ] || [ -z "$(ls -A "$EXPANDED_PATH" 2>/dev/null)" ]; then
+          echo "Cache directory empty, skipping save"
+          exit 0
+        fi
+
+        echo "Saving cache: ${CACHE_KEY}"
+        REL_PATH="$(echo "$EXPANDED_PATH" | sed 's|^/||')"
+        tar -cJf "$ARCHIVE" -C "/" "$REL_PATH" 2>/dev/null && echo "Cache saved" || echo "Cache save failed"