Smasherr/copy_images.sh

## copy_images.sh
#!/usr/bin/env bash

# This script can be used to copy all docker images from one GitLab-project to another.
# It was created because in GitLab it's not possible to move projects that contain docker images.
#
# Related issue: https://gitlab.com/gitlab-org/gitlab/-/issues/18383
#
# Author: Daniel Estermann <estermad@apache.org>
# Thanks to komar <komar@core.org.ua> for his brilliant support

ME=$(basename "$0")
DEPENDS="docker curl jq tac"

die() {
  if [[ "$*" && -t 2 ]]; then
    printf "\e[31;1m%s\e[0m\n" "$*" >&2
  else
    printf "%s\n" "$*" >&2
  fi
  exit 1
}

usage() {
  cat <<- EOM
		Usage: $ME <gitlab-server> <path-to-project> <new-path-to-project>

		Example: $ME gitlab.com johndoe/foo johndoe/bar
	EOM
  exit 1
}

[[ ${GITLAB_TOKEN} ]] || die "Please provide an access token via the environment variable GITLAB_TOKEN"

for CMD in $DEPENDS; do
  command -v $CMD >/dev/null 2>&1 || die "This script requires $CMD but it's not installed. Aborting."
done

docker ps >/dev/null 2>&1 || die "This script requires docker but its engine is unreachable. Aborting."

[[ ${1} && ${2} && ${3} ]] || usage

PROJECT_NS=${2//\//%2F}

REPOSITORY_IDS=$(curl -s -H "PRIVATE-TOKEN:${GITLAB_TOKEN}" \
                   "https://$1/api/v4/projects/${PROJECT_NS}/registry/repositories/" |
                     jq -r '.[].id' 2>/dev/null)
[[ ${REPOSITORY_IDS} ]] || die "$1/$2 has no docker images"

TMPFILE=$(mktemp -u /tmp/$ME.XXXXXX)

for REPOSITORY_ID in $REPOSITORY_IDS; do

  TAGS_URL="https://$1/api/v4/projects/${PROJECT_NS}/registry/repositories/${REPOSITORY_ID}/tags?per_page=100"

  TOTAL_PAGES=$(curl -sI -X HEAD -H "PRIVATE-TOKEN:${GITLAB_TOKEN}" ${TAGS_URL} |
                    sed -nE 's/X-Total-Pages:[[:space:]]*([^'$'\r'']*)'$'\r''?/\1/ip')
  [[ $TOTAL_PAGES =~ ^[0-9]+$ ]] || die "Error getting total page number using HTTP HEAD on $TAGS_URL (got $TOTAL_PAGES)"

  for PAGE in $(seq 1 $TOTAL_PAGES); do
    curl -s -H "PRIVATE-TOKEN:${GITLAB_TOKEN}" "${TAGS_URL}&page=${PAGE}" |
        jq -r '.[].location'
  done |
    sed -E "s#(.*)#docker pull \1 \&\& docker tag \1 \1#g
            s#(.*)($2)(.*:.*)#\1$3\3#i" |
      tee -a $TMPFILE

done

cat << EOM >> $TMPFILE
while true; do
    read -p "Do you want to push the images now? [Y/n] " yn
    case \${yn:-Y} in
        [Yy]* ) break;;
        * ) echo "Abort."; exit;;
    esac
done
EOM

tac $TMPFILE | sed '1,7d' | tac |
  sed -E "s#.* (.*)#docker push \1#" |
    tee -a $TMPFILE

[[ -f $TMPFILE ]] &&
  chmod +x $TMPFILE &&
    echo "You can now review the generated script in stdout or in $TMPFILE and if it looks fine for you just execute it." ||
      die "Something went wrong, sorry :("
	#!/usr/bin/env bash

	# This script can be used to copy all docker images from one GitLab-project to another.
	# It was created because in GitLab it's not possible to move projects that contain docker images.
	#
	# Related issue: https://gitlab.com/gitlab-org/gitlab/-/issues/18383
	#
	# Author: Daniel Estermann <estermad@apache.org>
	# Thanks to komar <komar@core.org.ua> for his brilliant support

	ME=$(basename "$0")
	DEPENDS="docker curl jq tac"

	die() {
	if [[ "$*" && -t 2 ]]; then
	printf "\e[31;1m%s\e[0m\n" "$*" >&2
	else
	printf "%s\n" "$*" >&2
	fi
	exit 1
	}

	usage() {
	cat <<- EOM
	Usage: $ME <gitlab-server> <path-to-project> <new-path-to-project>

	Example: $ME gitlab.com johndoe/foo johndoe/bar
	EOM
	exit 1
	}

	[[ ${GITLAB_TOKEN} ]] \|\| die "Please provide an access token via the environment variable GITLAB_TOKEN"

	for CMD in $DEPENDS; do
	command -v $CMD >/dev/null 2>&1 \|\| die "This script requires $CMD but it's not installed. Aborting."
	done

	docker ps >/dev/null 2>&1 \|\| die "This script requires docker but its engine is unreachable. Aborting."

	[[ ${1} && ${2} && ${3} ]] \|\| usage

	PROJECT_NS=${2//\//%2F}

	REPOSITORY_IDS=$(curl -s -H "PRIVATE-TOKEN:${GITLAB_TOKEN}" \
	"https://$1/api/v4/projects/${PROJECT_NS}/registry/repositories/" \|
	jq -r '.[].id' 2>/dev/null)
	[[ ${REPOSITORY_IDS} ]] \|\| die "$1/$2 has no docker images"

	TMPFILE=$(mktemp -u /tmp/$ME.XXXXXX)

	for REPOSITORY_ID in $REPOSITORY_IDS; do

	TAGS_URL="https://$1/api/v4/projects/${PROJECT_NS}/registry/repositories/${REPOSITORY_ID}/tags?per_page=100"

	TOTAL_PAGES=$(curl -sI -X HEAD -H "PRIVATE-TOKEN:${GITLAB_TOKEN}" ${TAGS_URL} \|
	sed -nE 's/X-Total-Pages:[[:space:]]([^'$'\r''])'$'\r''?/\1/ip')
	[[ $TOTAL_PAGES =~ ^[0-9]+$ ]] \|\| die "Error getting total page number using HTTP HEAD on $TAGS_URL (got $TOTAL_PAGES)"

	for PAGE in $(seq 1 $TOTAL_PAGES); do
	curl -s -H "PRIVATE-TOKEN:${GITLAB_TOKEN}" "${TAGS_URL}&page=${PAGE}" \|
	jq -r '.[].location'
	done \|
	sed -E "s#(.*)#docker pull \1 \&\& docker tag \1 \1#g
	s#(.)($2)(.:.*)#\1$3\3#i" \|
	tee -a $TMPFILE

	done

	cat << EOM >> $TMPFILE
	while true; do
	read -p "Do you want to push the images now? [Y/n] " yn
	case \${yn:-Y} in
	[Yy]* ) break;;
	* ) echo "Abort."; exit;;
	esac
	done
	EOM

	tac $TMPFILE \| sed '1,7d' \| tac \|
	sed -E "s#.* (.*)#docker push \1#" \|
	tee -a $TMPFILE

	[[ -f $TMPFILE ]] &&
	chmod +x $TMPFILE &&
	echo "You can now review the generated script in stdout or in $TMPFILE and if it looks fine for you just execute it." \|\|
	die "Something went wrong, sorry :("