chore(ci): Add yaml and action formatter/linter to CI

Signed-off-by: Kemal Akkoyun <[email protected]>

Author: kakkoyun

.github/actionlint.yaml

@@ -0,0 +1,2 @@
+# actionlint configuration
+# https://github.com/rhysd/actionlint/blob/main/docs/config.md

.github/workflows/validate.yml

@@ -69,3 +69,22 @@ jobs:
       - name: Run style and unused
         if: ${{ matrix.go_version == '1.22' }}
         run: make style unused
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Set up Go
+        uses: actions/[email protected]
+        with:
+          go-version: stable
+          check-latest: true
+
+      - name: Lint YAML files
+        run: make lint-yaml
+
+      - name: Lint GitHub Actions workflows
+        run: make lint-actions

.yamlfmt

@@ -0,0 +1,17 @@
+# yamlfmt configuration
+# https://github.com/google/yamlfmt
+
+doublestar: true
+
+exclude:
+  - "**/testdata/**"
+  - "**/*testdata*/**"
+
+gitignore_excludes: true
+
+formatter:
+  type: basic
+  indent: 2
+  include_document_start: false
+  retain_line_breaks: true
+  max_line_length: 0

Makefile

@@ -66,6 +66,30 @@ test-exp:
 test-exp-short:
 	cd exp && $(GOTEST) -short $(GOOPTS) $(pkgs)
 
+YAMLFMT := $(FIRST_GOPATH)/bin/yamlfmt
+ACTIONLINT := $(FIRST_GOPATH)/bin/actionlint
+
+$(YAMLFMT):
+	go install github.com/google/yamlfmt/cmd/yamlfmt@latest
+
+$(ACTIONLINT):
+	go install github.com/rhysd/actionlint/cmd/actionlint@latest
+
+.PHONY: format-yaml
+format-yaml: $(YAMLFMT)
+	@echo ">> formatting YAML files"
+	$(YAMLFMT) -dstar '**/*.yml' '**/*.yaml'
+
+.PHONY: lint-yaml
+lint-yaml: $(YAMLFMT)
+	@echo ">> linting YAML files"
+	$(YAMLFMT) -lint -dstar '**/*.yml' '**/*.yaml'
+
+.PHONY: lint-actions
+lint-actions: $(ACTIONLINT)
+	@echo ">> linting GitHub Actions workflows"
+	$(ACTIONLINT)
+
 .PHONY: check-crlf
 check-crlf:
 	@echo ">> checking for CRLF line endings"