Bump golang version with the latest supported one

.ci/bump-go-release-version.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+#
+# Given the Golang release version this script will bump the version.
+#
+# This script is executed by the automation we are putting in place
+# and it requires the git add/commit commands.
+#
+# NOTE: sha256 is retrieved from https://pkg.go.dev/golang.org/x/website/internal/dl?utm_source=godoc
+#
+# Parameters:
+#	$1 -> the Golang release version to be bumped. Mandatory.
+#
+set -euo pipefail
+MSG="parameter missing."
+GO_RELEASE_VERSION=${1:?$MSG}
+OS=$(uname -s| tr '[:upper:]' '[:lower:]')
+if [ "${OS}" == "darwin" ] ; then
+	SED="sed -i .bck"
+else
+	SED="sed -i"
+fi
+
+MAJOR_MINOR_VERSION=$(echo "$GO_RELEASE_VERSION" | sed -E -e "s#([0-9]+\.[0-9]+).*#\1#g")
+
+GO_FOLDER="go${MAJOR_MINOR_VERSION}"
+if [ -d "${GO_FOLDER}" ] ; then
+    echo "Update go version ${GO_RELEASE_VERSION}"
+    ${SED} -E -e "s#(VERSION[[:space:]]+):= .*#\1:= ${GO_RELEASE_VERSION}#g" "${GO_FOLDER}/Makefile.common"
+    git add "${GO_FOLDER}/Makefile.common"
+    ${SED} -E -e "s#(GO_VERSION[[:space:]]+)= .*#\1= '${GO_RELEASE_VERSION}'#g" Jenkinsfile
+    git add Jenkinsfile
+
+    find "${GO_FOLDER}" -type f -name Dockerfile.tmpl -print0 |
+        while IFS= read -r -d '' line; do
+            ${SED} -E -e "s#(ARG GOLANG_VERSION)=[0-9]+\.[0-9]+\.[0-9]+#\1=${GO_RELEASE_VERSION}#g" "$line"
+            GOLANG_DOWNLOAD_SHA256=$(curl -s https://golang.org/dl/\?mode\=json | jq -r ".[] | select( .version | contains(\"go${GO_RELEASE_VERSION}\")) | .files[] | select (.filename | contains(\"go${GO_RELEASE_VERSION}.linux-arm64.tar.gz\")) | .sha256")
+            ${SED} -E -e "s#(ARG GOLANG_DOWNLOAD_SHA256)=.+#\1=${GOLANG_DOWNLOAD_SHA256}#g" "$line"
+            git add "${line}"
+        done
+
+    git diff --staged --quiet || git commit -m "[Automation] Update go release version to ${GO_RELEASE_VERSION}"
+    git --no-pager log -1
+
+    echo "You can now push and create a Pull Request"
+else
+    echo "A new minor version has been released. Bump cannot happen"
+    echo "Add Golang go${MAJOR_MINOR_VERSION} crossbuild images."
+    echo "See https://github.com/elastic/golang-crossbuild/pull/85"
+    echo "You might need to deprecate one of the existing Golang versions since"
+    echo "we only support the last two releases."
+    exit 1
+fi

.gitignore

@@ -5,4 +5,5 @@
 .vagrant
 _obj
 Dockerfile
-.status.*
+.status.*
+*.bck

.mergify.yml

@@ -0,0 +1,12 @@
+pull_request_rules:
+  - name: delete upstream branch after merging changes on Jenkinsfile or it's closed
+    conditions:
+      - or:
+        - merged
+        - closed
+      - and:
+        - label=automation
+        - head~=^update-go-version
+        - files~=^Jenkinsfile$
+    actions:
+      delete_head_branch: