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#!/bin/bash -eu

# Publish any versions of the docker image not yet pushed to jenkins/jenkins

# Arguments:

# -n dry run, do not build or publish images

# -d debug

set -o pipefail

sort-versions() {

if [ "$(uname)" == 'Darwin' ]; then

gsort --version-sort

else

sort --version-sort

}

# Try tagging with and without -f to support all versions of docker

docker-tag() {

local from="jenkins/jenkins:$1"

local to="$2/jenkins:$3"

local out

docker pull "$from"

if out=$(docker tag -f "$from" "$to" 2>&1); then

echo "$out"

else

docker tag "$from" "$to"

}

# could use jq .token

curl -q -sSL "https://auth.docker.io/token?service=registry.docker.io&scope=repository:jenkins/jenkins:pull" | grep -o '"token":"[^"]*"' | cut -d':' -f 2 | xargs echo

}

is-published() {

local tag=$1

local opts=""

if [ "$debug" = true ]; then

opts="-v"

local http_code;

http_code=$(curl $opts -q -fsSL -o /dev/null -w "%{http_code}" -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -H "Authorization: Bearer $TOKEN" "https://index.docker.io/v2/jenkins/jenkins/manifests/$tag")

if [ "$http_code" -eq "404" ]; then

false

elif [ "$http_code" -eq "200" ]; then

true

else

echo "Received unexpected http code from Docker hub: $http_code"

}

get-manifest() {

local tag=$1

local opts=""

if [ "$debug" = true ]; then

opts="-v"

curl $opts -q -fsSL -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -H "Authorization: Bearer $TOKEN" "https://index.docker.io/v2/jenkins/jenkins/manifests/$tag"

}

get-digest() {

local manifest

manifest=$(get-manifest "$1")

#get-manifest "$1" | jq .config.digest

if [ "$debug" = true ]; then

>&2 echo "DEBUG: Manifest for $1: $manifest"

}

get-latest-versions() {

}

publish() {

local version=$1

local variant=$2

local tag="${version}${variant}"

local sha

local build_opts=(--no-cache --pull)

if [ "$dry_run" = true ]; then

build_opts=()

local dir=war

# lts is in a different dir

if [[ "$version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then

dir=war-stable

sha=$(curl -q -fsSL "http://mirrors.jenkins.io/${dir}/${version}/jenkins.war.sha256" | cut -d' ' -f 1)

docker build --file "Dockerfile$variant" \

--build-arg "JENKINS_VERSION=$version" \

--build-arg "JENKINS_SHA=$sha" \

--tag "jenkins/jenkins:${tag}" \

--tag "jenkinsci/jenkins:${tag}" \

"${build_opts[@]+"${build_opts[@]}"}" .

# " line to fix syntax highlightning

if [ ! "$dry_run" = true ]; then

docker push "jenkins/jenkins:${tag}"

docker push "jenkinsci/jenkins:${tag}"

}

tag-and-push() {

local source=$1

local target=$2

local digest_source

local digest_target

if [ "$debug" = true ]; then

>&2 echo "DEBUG: Getting digest for ${source}"

# if tag doesn't exist yet, ie. dry run

if ! digest_source=$(get-digest "${source}"); then

echo "Unable to get digest for ${source} ${digest_source}"

digest_source=""

if [ "$debug" = true ]; then

>&2 echo "DEBUG: Getting digest for ${target}"

if ! digest_target=$(get-digest "${target}"); then

echo "Unable to get digest for ${target} ${digest_target}"

digest_target=""

if [ "$digest_source" == "$digest_target" ] && [ -n "${digest_target}" ]; then

echo "Images ${source} [$digest_source] and ${target} [$digest_target] are already the same, not updating tags"

else

echo "Creating tag ${target} pointing to ${source}"

docker-tag "${source}" "jenkins" "${target}"

docker-tag "${source}" "jenkinsci" "${target}"

if [ ! "$dry_run" = true ]; then

echo "Pushing jenkins/jenkins:${target}"

docker push "jenkins/jenkins:${target}"

docker push "jenkinsci/jenkins:${target}"

else

echo "Would push jenkins/jenkins:${target}"

}

publish-latest() {

local version=$1

local variant=$2

# push latest (for master) or the name of the branch (for other branches)

if [ -z "${variant}" ]; then

tag-and-push "${version}${variant}" "latest"

else

tag-and-push "${version}${variant}" "${variant#-}"

}

publish-lts() {

local version=$1

local variant=$2

tag-and-push "${version}${variant}" "lts${variant}"

}

# Process arguments

dry_run=false

debug=false

variant=""

while [[ $# -gt 0 ]]; do

key="$1"

case $key in

-n)

dry_run=true

;;

-d)

debug=true

;;

-v|--variant)

variant="-"$2

shift

;;

echo "Unknown option: $key"

return 1

;;

esac

shift

done

if [ "$dry_run" = true ]; then

echo "Dry run, will not publish images"

TOKEN=$(login-token)

lts_version=""

version=""

for version in $(get-latest-versions); do

if is-published "$version$variant"; then

echo "Tag is already published: $version$variant"

else

echo "Publishing version: $version$variant"

publish "$version" "$variant"

# Update lts tag

if [[ "$version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then

lts_version="${version}"

done

publish-latest "${version}" "${variant}"

if [ -n "${lts_version}" ]; then

publish-lts "${lts_version}" "${variant}"

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