Add script to undo a release

unrelease.sh

@@ -0,0 +1,149 @@
+#!/usr/bin/env bash
+#
+#  Copyright 2023 Red Hat
+#
+#  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
+#
+#      https://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.
+#
+
+
+# -------------------------------------------------------
+#
+# Undoes a failed release:
+#   - deletes a local and remote tag
+#   - bump to previous version
+#   - commit & push changes
+#
+# -------------------------------------------------------
+
+set -Eeuo pipefail
+trap cleanup SIGINT SIGTERM ERR EXIT
+
+VERSION=0.0.1
+
+# Change into the script's directory
+# Using relative paths is safe!
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
+readonly script_dir
+cd "${script_dir}"
+
+usage() {
+  cat <<EOF
+USAGE:
+    $(basename "${BASH_SOURCE[0]}") [FLAGS] <release-version>
+
+FLAGS:
+    -h, --help          Prints help information
+    -v, --version       Prints version information
+    --no-color          Uses plain text output
+
+ARGS:
+    <release-version>   The previous release version (as semver)
+EOF
+  exit
+}
+
+cleanup() {
+  trap - SIGINT SIGTERM ERR EXIT
+}
+
+setup_colors() {
+  if [[ -t 2 ]] && [[ -z "${NO_COLOR-}" ]] && [[ "${TERM-}" != "dumb" ]]; then
+    NOFORMAT='\033[0m' RED='\033[0;31m' GREEN='\033[0;32m' ORANGE='\033[0;33m' BLUE='\033[0;34m' PURPLE='\033[0;35m' CYAN='\033[0;36m' YELLOW='\033[1;33m'
+  else
+    # shellcheck disable=SC2034
+    NOFORMAT='' RED='' GREEN='' ORANGE='' BLUE='' PURPLE='' CYAN='' YELLOW=''
+  fi
+}
+
+msg() {
+  echo >&2 -e "${1-}"
+}
+
+die() {
+  local msg=$1
+  local code=${2-1} # default exit status 1
+  msg "$msg"
+  exit "$code"
+}
+
+version() {
+  msg "${BASH_SOURCE[0]} $VERSION"
+  exit 0
+}
+
+parse_params() {
+  while :; do
+    case "${1-}" in
+    -h | --help) usage ;;
+    -v | --version) version ;;
+    --no-color) NO_COLOR=1 ;;
+    -?*) die "Unknown option: $1" ;;
+    *) break ;;
+    esac
+    shift
+  done
+
+  ARGS=("$@")
+  [[ ${#ARGS[@]} -eq 1 ]] || die "Missing release version"
+  RELEASE_VERSION=${ARGS[0]}
+  return 0
+}
+
+is_semver() {
+    local version
+    version="$1"
+    if [[ ! ${version} =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+        return 1
+    fi
+}
+
+parse_params "$@"
+setup_colors
+
+FINAL_VERSION="${RELEASE_VERSION}"
+TAG="v${RELEASE_VERSION}"
+
+is_semver "${RELEASE_VERSION}" || die "Release version is not a semantic version"
+git diff-index --quiet HEAD || die "You have uncommitted changes"
+[[ $(git tag -l "${TAG}") ]] || die "Tag ${TAG} not found"
+
+msg ""
+msg "Codebase is ready to undo release."
+msg ""
+msg "If you decide to continue, this script will "
+msg ""
+msg "   1. Delete the tag ${CYAN}${TAG}${NOFORMAT} ()local and remote)"
+msg "   2. Bump the version to ${CYAN}${RELEASE_VERSION}${NOFORMAT}"
+msg "   3. ${CYAN}Commit${NOFORMAT} and ${CYAN}push${NOFORMAT} to origin"
+msg ""
+echo "Do you wish to continue?"
+select yn in "Yes" "No"; do
+    case $yn in
+        Yes ) break;;
+        No ) die "Aborted ";;
+    esac
+done
+
+git tag -d v1.2.7 && git push --delete origin v1.2.7
+./versionBump.sh 1.2.7-SNAPSHOT
+git commit -am "Undo v1.2.7"
+git push origin main
+
+msg ""
+msg "Delete tag"
+git tag -d ${TAG} && git push --delete origin ${TAG}
+./versionBump.sh ${RELEASE_VERSION}
+msg "Push changes"
+git commit --quiet -am "Undo release ${TAG}"
+git push --quiet origin main &> /dev/null
+msg "Done. Please update/undo the changes to the changelog!"