Use Composite Action to reduce duplication

.github/actions/ci-rust-setup/action.yml

@@ -0,0 +1,50 @@
+name: CI Rust Setup
+description: 'Sets up the environment for Rust jobs during CI workflow'
+
+inputs:
+  cache-name:
+    description: 'Name of cache artifacts (same name is same cache key) empty to disable cache'
+    required: false
+  targets:
+    description: 'A comma separated list of extra targets you want to install'
+    required: false
+  components:
+    description: 'A comma separated list of extra components you want to install'
+    required: false
+  toolchain:
+    description: 'The toolchain to use. If not specified, the rust-toolchain file will be used'
+    required: false
+
+runs:
+  using: composite
+  steps:
+    - name: Get toolchain from input OR rust-toolchain file
+      id: gettoolchain
+      shell: bash
+      run: |-
+        RUST_TOOLCHAIN="${{ inputs.toolchain }}"
+        if [ ! -f rust-toolchain ] && [ -z "${RUST_TOOLCHAIN}" ]; then
+          echo "***ERROR*** NEED toolchain INPUT OR rust-toolchain FILE IN ROOT OF REPOSITORY" >&2
+          exit 1
+        fi
+        if [ -z "${RUST_TOOLCHAIN}" ]; then
+          RUST_TOOLCHAIN="$(cat rust-toolchain)"
+        fi
+        echo "toolchain=\"${RUST_TOOLCHAIN}\"" >> $GITHUB_OUTPUT
+    - name: Install ${{ steps.gettoolchain.outputs.toolchain }} Rust toolchain
+      id: toolchain
+      # Commit date is Sep 19, 2023
+      uses: dtolnay/rust-toolchain@439cf607258077187679211f12aa6f19af4a0af7
+      with:
+        toolchain: ${{ steps.gettoolchain.outputs.toolchain }}
+        targets: ${{ inputs.targets }}
+        components: ${{ inputs.components }}
+    - name: Cache dependencies
+      uses: actions/cache@v3
+      if: inputs.cache-name != ''
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          target
+        key: ${{ runner.os }}-cargo-${{ inputs.cache-name }}-${{ steps.toolchain.outputs.cachekey }}-${{ hashFiles('**/Cargo.lock') }}

.github/workflows/ci.yml

@@ -13,25 +13,19 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - id: toolchain
-        uses: dtolnay/[email protected]
-      - name: Cache dependencies
-        uses: actions/cache@v3
+      - name: Setup Rust
+        uses: './.github/actions/ci-rust-setup'
         with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            target
-          key: ${{ runner.os }}-cargo-${{ steps.toolchain.outputs.cachekey }}-${{ hashFiles('**/Cargo.lock') }}
+          cache-name: dev
       - run: cargo check --all-features
 
   fmt:
     name: Formatter
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - id: toolchain
-        uses: dtolnay/rust-[email protected]
+      - name: Setup Rust
+        uses: './.github/actions/ci-rust-setup'
         with:
           components: rustfmt
       - run: cargo fmt --all -- --check
@@ -41,16 +35,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - id: toolchain
-        uses: dtolnay/[email protected]
-      - name: Cache dependencies
-        uses: actions/cache@v3
-        with: # test cache key is different (adding test cfg is a re-compile)
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            target
-          key: ${{ runner.os }}-cargo-test-${{ steps.toolchain.outputs.cachekey }}-${{ hashFiles('**/Cargo.lock') }}
+      - name: Setup Rust
+        uses: './.github/actions/ci-rust-setup'
+        with:
+          cache-name: test
       - run: cargo test --lib --all-features
 
   clippy:
@@ -67,17 +55,10 @@ jobs:
         ]
     steps:
       - uses: actions/checkout@v3
-      - id: toolchain
-        uses: dtolnay/rust-[email protected]
+      - name: Setup Rust
+        uses: './.github/actions/ci-rust-setup'
         with:
+          cache-name: dev
           components: clippy
-      - name: Cache dependencies
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            target
-          key: ${{ runner.os }}-cargo-${{ steps.toolchain.outputs.cachekey }}-${{ hashFiles('**/Cargo.lock') }}
       - name: Clippy with Features = ${{ matrix.features }}
         run: cargo clippy ${{ matrix.features }} -- -D warnings

rust-toolchain

@@ -0,0 +1 @@
+1.70