build: Add update-go-version and goversioncheck targets

Until recently we were using a very outdated golang 1.13.4 release
(latest is 1.13.15). This commit adds an 'update-go-version' Makefile
target which will automatically update the golang version to the latest
release ones in the various files where we explicitly set it.
It also adds a 'goversioncheck' target which can be used in the future
by CI to get notifications when the golang version that we use is out of
date.

Makefile

@@ -206,3 +206,11 @@ embed_bundle: clean cross $(HOST_BUILD_DIR)/crc-embedder check_bundledir $(HYPER
 	$(HOST_BUILD_DIR)/crc-embedder embed --log-level debug --goos=darwin --bundle-dir=$(BUNDLE_DIR) $(BUILD_DIR)/macos-amd64/crc
 	$(HOST_BUILD_DIR)/crc-embedder embed --log-level debug --goos=linux --bundle-dir=$(BUNDLE_DIR) $(BUILD_DIR)/linux-amd64/crc
 	$(HOST_BUILD_DIR)/crc-embedder embed --log-level debug --goos=windows --bundle-dir=$(BUNDLE_DIR) $(BUILD_DIR)/windows-amd64/crc.exe
+
+.PHONY: update-go-version
+update-go-version:
+	./update-go-version.sh 1.14
+
+.PHONY: goversioncheck
+goversioncheck:
+	./verify-go-version.sh

appveyor.yml

@@ -1,15 +1,10 @@
 build: off
-
 clone_folder: c:\gopath\src\github.com\code-ready\crc
-
 environment:
   GOPATH: c:\gopath
-
 stack: go 1.14
-
 before_test:
   - choco install make
   - make cross
-
 test_script:
   - make test

update-go-version.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -euo pipefail
+
+# Updates our various build files, CI configs, ... to the latest released go
+# version in a given minor release stream (1.x)
+# This requires yq and jq in addition to fairly standard shell tools (curl, grep, sed, ...)
+
+golang_base_version=$1
+latest_version=$(curl --silent  'https://golang.org/dl/?mode=json&include=all' | jq -r '.[].files[].version'  |uniq | sed -e 's/go//' |sort -V |grep ${golang_base_version}|tail -1)
+echo "Updating golang version to $latest_version"
+
+go mod edit -go ${golang_base_version}
+sed -i "s,^FROM registry.svc.ci.openshift.org/openshift/release:golang-1\... AS builder\$,FROM registry.svc.ci.openshift.org/openshift/release:golang-${golang_base_version} AS builder," images/openshift-ci/Dockerfile
+sed -i "s/GOVERSION: .*\$/GOVERSION: \"${latest_version}\"/" .circleci/config.yml
+sed -i "s/^GO_VERSION=.*$/GO_VERSION=${latest_version}/" centos_ci.sh
+yq write --inplace ./appveyor.yml  stack "go ${golang_base_version}"
+yq write --inplace ./.travis.yml go[0] ${latest_version}

verify-go-version.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+export GO111MODULE=on
+
+readonly REPO_ROOT_DIR="$(git rev-parse --show-toplevel 2> /dev/null)"
+readonly TMP_DIFFROOT="$(mktemp -d "${REPO_ROOT_DIR}"/tmpdiffroot.XXXXXX)"
+
+cleanup() {
+  rm -rf "${TMP_DIFFROOT}"
+}
+
+trap "cleanup" EXIT SIGINT
+
+cleanup
+
+git clone "${REPO_ROOT_DIR}" "${TMP_DIFFROOT}"
+
+make -C "${TMP_DIFFROOT}" update-go-version
+
+echo "Diffing ${REPO_ROOT_DIR} against tree with freshly updated golang version"
+ret=0
+git --no-pager -C ${TMP_DIFFROOT} diff --exit-code 2>&1 >/dev/null || ret=1
+#diff -Naupr "${REPO_ROOT_DIR}/vendor" "${TMP_DIFFROOT}/vendor" || ret=1
+
+if [[ $ret -eq 0 ]]
+then
+  echo "${REPO_ROOT_DIR} up to date."
+else
+  echo "${REPO_ROOT_DIR} is out of date. Please run make update-go-version"
+  exit 1
+fi