Adds gofmt verification

.github/workflows/vet-code.yml

@@ -0,0 +1,30 @@
+name: Code format verify
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      — master
+
+jobs:
+  gofmt:
+    name: Run gofmt verify
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: '1.19'
+          stable: 'false'
+
+      - name: Install dependencies
+        run: |
+          go version
+          go install golang.org/x/lint/golint@latest
+      - name: checkout
+        uses: actions/checkout@v2
+
+      - name: run gofmt tests
+        run: ./hack/verify-gofmt.sh

hack/README.md

@@ -149,7 +149,8 @@ pushing directly to a local registry and configuring kind to use this reg, so do
 isnt required.
 - Or a `tilt` recipe which hot reloads all kpng on code changes.
 
-
+## Code formating
+**We should run `hack/verify-gofmt.sh` before submitting a PR it checks whether the source code needs to be formatted or not and if anything fails run `hack/update-gofmt.sh` to actually format sources**.
 
 
 

hack/update-gofmt.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+# Copyright 2023 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# GoFmt apparently is changing @ head...
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+
+cd "${ROOT}"
+
+function git_find() {
+    # Similar to find but faster and easier to understand.  We want to include
+    # modified and untracked files because this might be running against code
+    # which is not tracked by git yet.
+    git ls-files -cmo --exclude-standard \
+        ':!:vendor/*'        `# catches vendor/...` \
+        ':!:*/vendor/*'      `# catches any subdir/vendor/...` \
+        ':!:third_party/*'   `# catches third_party/...` \
+        ':!:*/third_party/*' `# catches third_party/...` \
+        ':(glob)**/*.go' \
+        "$@"
+}
+
+git_find -z | xargs -0 gofmt -s -w

hack/verify-gofmt.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+# Copyright 2023 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script checks whether the source code needs to be formatted or not by
+# `gofmt`. Run `hack/update-gofmt.sh` to actually format sources.
+#
+# Note: gofmt output can change between go versions.
+#
+# Usage: `hack/verify-gofmt.sh`.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+
+cd "${ROOT}"
+
+find_files() {
+  find . -not \( \
+      \( \
+        -wholename './output' \
+        -o -wholename './.git' \
+        -o -wholename './_output' \
+        -o -wholename './_gopath' \
+        -o -wholename './release' \
+        -o -wholename './target' \
+        -o -wholename '*/third_party/*' \
+        -o -wholename '*/vendor/*' \
+      \) -prune \
+    \) -name '*.go'
+}
+
+# gofmt exits with non-zero exit code if it finds a problem unrelated to
+# formatting (e.g., a file does not parse correctly). Without "|| true" this
+# would have led to no useful error message from gofmt, because the script would
+# have failed before getting to the "echo" in the block below.
+diff=$(find_files | xargs gofmt -d -s 2>&1) || true
+if [[ -n "${diff}" ]]; then
+  echo "${diff}" >&2
+  echo >&2
+  echo "Run ./hack/update-gofmt.sh" >&2
+  exit 1
+fi