update_images_in_che_samples.sh

#!/bin/bash
#
# Copyright (c) 2018-2023 Red Hat, Inc.
# This program and the accompanying materials are made
# available under the terms of the Eclipse Public License 2.0
# which is available at https://www.eclipse.org/legal/epl-2.0/
#
# SPDX-License-Identifier: EPL-2.0
# 

# defaults
# try to compute branches from currently checked out branch; else fall back to hard coded value

# ./update_images_in_che_samples.sh -t latest --branchfrom main -gh sv-udi-latest

TARGET_BRANCH=sv-udi-latest
pkgs_devel_branch=${TARGET_BRANCH}

pduser=devspaces-build

samplesRepo=che-samples

SOURCE_BRANCH=main # normally, use this script to create tags, not branches

CLEAN="false" #  if set true, delete existing folders and do fresh checkouts

if [[ $# -lt 4 ]]; then
	echo "
To create tags (and push updated CSV content into operator-bundle repo):
  $0 -v CSV_VERSION -t DS_VERSION -gh DS_GH_BRANCH -ghtoken GITHUB_TOKEN -pd PKGS_DEVEL_BRANCH -pduser kerberos_user
Example: 
  $0 -v 3.y.0 -t 3.y -gh ${TARGET_BRANCH} -ghtoken \$GITHUB_TOKEN -pd ${pkgs_devel_branch} -pduser $pduser
To create or update existing branches and update related PNC build-configs:
  $0 -t DS_VERSION --branchfrom SOURCE_GH_BRANCH -gh TARGET_GH_BRANCH -ghtoken GITHUB_TOKEN
Example: 
  $0 -t DS_VERSION --branchfrom devspaces-3-rhel-8 -gh ${TARGET_BRANCH} -ghtoken \$GITHUB_TOKEN
"
	exit 1
fi

# commandline args
while [[ "$#" -gt 0 ]]; do
  case $1 in
	'--branchfrom') SOURCE_BRANCH="$2"; shift 1;; # this flag will create branches instead of using branches to create tags
	'-v') CSV_VERSION="$2"; shift 1;; # 3.y.0
	'-t') DS_VERSION="$2"; shift 1;; # 3.y # used to get released bundle container's CSV contents
	'-gh') TARGET_BRANCH="$2"; shift 1;;
	'-ghtoken') GITHUB_TOKEN="$2"; shift 1;;
	'-pd') pkgs_devel_branch="$2"; shift 1;;
	'-pduser') pduser="$2"; shift 1;;
	'--clean') CLEAN="true"; shift 0;; # if set true, delete existing folders and do fresh checkouts
  esac
  shift 1
done


if [[ ${CLEAN} == "true" ]]; then
	rm -fr /tmp/tmp-checkouts || true
fi

mkdir -p /tmp/tmp-checkouts
cd /tmp/tmp-checkouts

set -e

# for the sample projects ONLY, commit changes to the devfile so it contains the correct image and tag
updateSampleDevfileReferences () {
	devfile=devfile.yaml
	if [[ $DS_VERSION ]]; then
		DS_TAG="$DS_VERSION"
	else
		DS_TAG="${TARGET_BRANCH//-rhel-8}"; DS_TAG="${DS_TAG//devspaces-}"
	fi
  DS_TAG=ubi8-latest
	# echo "[DEBUG] update $devfile with DS_TAG = $DS_TAG"
	sed -i -E "s|image:.*universal-developer-image:.*|image: quay.io/devfile/universal-developer-image:ubi8-latest|" "$devfile" 

	sed -r -i $devfile -e "s#quay.io/devspaces/#registry.redhat.io/devspaces/#g"
	git commit -s -m "chore(devfile) use ubi-latest tag for UDI" "$devfile" || echo ""
}

# create branch or tag
pushBranchAndOrTagGH () {
	d="$1"
	org="$2"
	echo; echo "== $d =="
	# if source_branch defined and target branch doesn't exist yet, check out the source branch
	if [[ ${SOURCE_BRANCH} ]] && [[ $(git ls-remote --heads "https://github.com/${org}/${d}" "${TARGET_BRANCH}") == "" ]]; then
		clone_branch=${SOURCE_BRANCH}
	else # if source branch not set (tagging operation) or target branch already exists
		clone_branch=${TARGET_BRANCH}
	fi
	if [[ ! -d "/tmp/tmp-checkouts/projects_${d}" ]]; then
		git clone -q --depth 1 -b "${clone_branch}" "https://github.com/${org}/${d}" "projects_${d}"
		pushd "/tmp/tmp-checkouts/projects_${d}" >/dev/null || exit 1
			export GITHUB_TOKEN="${GITHUB_TOKEN}"
			# git config user.email "[email protected]"
			# git config user.name "Red Hat Devstudio Release Bot"
			# git config --global push.default matching
			# git config --global hub.protocol https
			git remote set-url origin "https://github.com/${org}/${d}"

			git checkout --track "origin/${clone_branch}" -q || true
			git pull -q
		popd >/dev/null || exit 1
	fi
	pushd "/tmp/tmp-checkouts/projects_${d}" >/dev/null || exit 1
	if [[ ${SOURCE_BRANCH} ]]; then 
		# create a branch or use existing
		git branch "${TARGET_BRANCH}" || true
		git checkout "${TARGET_BRANCH}" || true
		git pull origin "${TARGET_BRANCH}" || true

		# for the devspaces sample repos, update devfiles to point to the correct tag/branch
		if [[ $org == "${samplesRepo}" ]]; then
			updateSampleDevfileReferences
		fi

		git pull origin "${TARGET_BRANCH}" || true
		git push origin "${TARGET_BRANCH}" || true
	fi
	popd >/dev/null || exit 1
}

####### sample projects: branching and tagging
# cat devspaces-devfileregistry/devfiles/*/meta.* | grep v2 | sort
sampleprojects="\
web-nodejs-sample \
fuse-rest-http-booster \
bash \
cpp-hello-world \
aspnetcore-realworld-example-app \
golang-example \
lombok-project-sample \
java-guestbook \
java-spring-petclinic \
nodejs-angular \
nodejs-mongodb-sample \
nodejs-react-redux \
react-web-app \
php-symfony \
python-hello-world \
django-realworld-example-app \
quarkus-quickstarts \
helloworld-rust \
scala-sbt \
"

# create branches for devspaces samples, located under https://github.com/${samplesRepo}/
for s in $sampleprojects; do
	pushBranchAndOrTagGH "$s" ${samplesRepo}
done

# cleanup
rm -fr /tmp/tmp-checkouts