update golang version

Makefile

@@ -32,6 +32,7 @@ RPM_VERSION ?= $(DEB_VERSION)
 RPM_REVISION ?= 0
 
 # used by hack/jenkins/release_build_and_upload.sh and KVM_BUILD_IMAGE, see also BUILD_IMAGE below
+# update this only by running `make update-golang-version`
 GO_VERSION ?= 1.16.7
 
 # replace "x.y.0" => "x.y". kube-cross and golang.org/dl use different formats for x.y.0 go versions
@@ -67,6 +68,7 @@ MINIKUBE_RELEASES_URL=https://github.com/kubernetes/minikube/releases/download
 
 KERNEL_VERSION ?= 4.19.182
 # latest from https://github.com/golangci/golangci-lint/releases 
+# update this only by running `make update-golint-version`
 GOLINT_VERSION ?= v1.39.0
 # Limit number of default jobs, to avoid the CI builds running out of memory
 GOLINT_JOBS ?= 4
@@ -973,6 +975,12 @@ update-kubernetes-version:
 	(cd hack/update/kubernetes_version && \
 	 go run update_kubernetes_version.go)
 
+.PHONY: update-golint-version
+update-golint-version:
+	(cd hack/update/golint_version && \
+	 go run update_golint_version.go)
+
+
 .PHONY: update-kubernetes-version-pr
 update-kubernetes-version-pr:
 ifndef GITHUB_TOKEN

hack/update/golint_version/update_golint_version.go

@@ -0,0 +1,88 @@
+/*
+Copyright 2020 The Kubernetes Authors All rights reserved.
+
+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.
+*/
+
+/*
+Script expects the following env variables:
+ - UPDATE_TARGET=<string>: optional - if unset/absent, default option is "fs"; valid options are:
+   - "fs"  - update only local filesystem repo files [default]
+   - "gh"  - update only remote GitHub repo files and create PR (if one does not exist already)
+   - "all" - update local and remote repo files and create PR (if one does not exist already)
+ - GITHUB_TOKEN=<string>: GitHub [personal] access token
+   - note: GITHUB_TOKEN is required if UPDATE_TARGET is "gh" or "all"
+*/
+
+package main
+
+import (
+	"context"
+	"time"
+
+	"golang.org/x/mod/semver"
+	"k8s.io/klog/v2"
+
+	"k8s.io/minikube/hack/update"
+)
+
+const (
+	// default context timeout
+	cxTimeout = 300 * time.Second
+)
+
+var (
+	schema = map[string]update.Item{
+		"Makefile": {
+			Replace: map[string]string{
+				`GOLINT_VERSION \?= v1.*`: `GOLINT_VERSION ?= {{.StableVersion}}`,
+			},
+		},
+	}
+
+	// PR data
+	prBranchPrefix = "update-golint-version_" // will be appended with first 7 characters of the PR commit SHA
+	prTitle        = `update go lint version: {stable: "{{.StableVersion}}"}`
+)
+
+// Data holds stable gopogh version in semver format.
+type Data struct {
+	StableVersion string `json:"stableVersion"`
+}
+
+func main() {
+	// set a context with defined timeout
+	ctx, cancel := context.WithTimeout(context.Background(), cxTimeout)
+	defer cancel()
+
+	// get Golang stable version
+	stable, err := golintVersion(ctx, "golangci", "golangci-lint")
+	if err != nil {
+		klog.Fatalf("Unable to get Golang stable version: %v", err)
+	}
+	data := Data{StableVersion: stable}
+	klog.Infof("Golang stable version: %s", data.StableVersion)
+
+	update.Apply(ctx, schema, data, prBranchPrefix, prTitle, 12247)
+}
+
+//
+// golintVersions returns stable version in semver format.
+func golintVersion(ctx context.Context, owner, repo string) (stable string, err error) {
+	// get Kubernetes versions from GitHub Releases
+	stable, _, err = update.GHReleases(ctx, owner, repo)
+	if err != nil || !semver.IsValid(stable) {
+		return "", err
+	}
+	return stable, nil
+}