chore(ci): publish crate.io

.github/workflows/build-test.yaml

@@ -51,6 +51,19 @@ jobs:
           export PROJECT_TITLE="${{ matrix.os }}"
           bash <(curl -s https://raw.githubusercontent.com/duyet/cov-rs/master/cov.sh)
 
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          components: rustfmt
+          override: true
+      - name: Run fmt check
+        run: cargo fmt --all -- --check
+
   build:
     runs-on: ${{ matrix.os }}
     strategy:
@@ -118,3 +131,39 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./target/doc
+
+  # automate publishing to crates.io on pushes to tags
+  publish-crates:
+    if: startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    needs: [build, fmt]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Rust Toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+
+      - name: Publish
+        if: env.CRATES_TOKEN
+        run: |
+          pushd crate-attributes
+          cargo publish --token ${{ secrets.CRATES_TOKEN }}
+          popd
+          # eventual consistency in crates.io dictates we wait a bit before publishing
+          # so that crate-attributes is available for resolution
+          sleep 20
+          pushd crate
+          cargo publish --token ${{ secrets.CRATES_TOKEN }}
+          popd
+          # eventual consistency in crates.io dictates we wait a bit before publishing
+          # so that crate is available for resolution
+          sleep 20
+          pushd crate-http
+          cargo publish --token ${{ secrets.CRATES_TOKEN }}
+          popd
+        env:
+          CRATES_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}
+