ci: chores (#5280)

.github/workflows/lint.yml

@@ -0,0 +1,78 @@
+name: lint
+
+on:
+  pull_request:
+  merge_group:
+  push:
+    branches: [main]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  clippy:
+    name: clippy
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@clippy
+        with:
+          toolchain: nightly-2023-10-29
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+      - run: cargo clippy --workspace --all-targets --all-features
+        env:
+          RUSTFLAGS: -D warnings
+
+  docs:
+    name: docs
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+      - run: cargo docs --document-private-items
+        env:
+          # Keep in sync with ./book.yml:jobs.build
+          # This should only add `-D warnings`
+          RUSTDOCFLAGS:
+            --cfg docsrs --show-type-layout --generate-link-to-definition --enable-index-page
+            -Zunstable-options -D warnings
+
+  fmt:
+    name: fmt
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rustfmt
+      - run: cargo fmt --all --check
+
+  grafana:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check dashboard JSON with jq
+        uses: sergeysova/jq-action@v2
+        with:
+          cmd: jq empty etc/grafana/dashboards/overview.json
+
+  lint-success:
+    name: lint success
+    runs-on: ubuntu-latest
+    if: always()
+    needs: [clippy, docs, fmt, grafana]
+    timeout-minutes: 30
+    steps:
+      - name: Decide whether the needed jobs succeeded or failed
+        uses: re-actors/alls-green@release/v1
+        with:
+          jobs: ${{ toJSON(needs) }}