Merge "Add script to build all docker images in the correct order"
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commit
5f3cf5b6fe
162
tools/build-all-docker-images
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162
tools/build-all-docker-images
Executable file
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#!/usr/bin/env bash
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# Depends on bash 4 and gawk
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TOPDIR=$(git rev-parse --show-toplevel)
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DOCKERDIR="$TOPDIR/docker"
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declare -A dependency
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declare -A img_dirs
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declare -A status
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function info {
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[[ -n $1 ]] && printf "%s\n" "$1"
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}
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function success {
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[[ -n $1 ]] && printf "\033[00;32m%s\033[00m\n" "$1"
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}
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function warn {
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[[ -n $1 ]] && printf "\033[00;31m%s\033[00m\n" "$1"
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}
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function set_defaults {
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PREFIX=fedora-rdo-
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NAMESPACE=kollaglue
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}
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function has_changed {
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local image=$1
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# Rebuild everything unless given git revision
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# We don't really care about the order of the $FROM and $TO parameters, all
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# we need is the list of changed files between the revisions, or HEAD if
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# only one of them is specified
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[[ -z $FROM && -z $TO ]] || git diff --name-only $FROM $TO | grep -q "${img_dirs[$image]#$TOPDIR/}"
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}
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function requires_build {
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local image=$1
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local dep=${dependency[$image]}
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# An image requires a built if it meets the following conditions:
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# - it has instructions to build the image
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# - it hasn't been processed yet
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# - its dependency was rebuilt or its build instruction was modified
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[[ ${img_dirs[$image]} && -z ${status[$image]} ]] && \
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([[ ${status[$dep]} == "rebuilt" ]] || has_changed $image)
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}
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function build_image {
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local dir=$1
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if [[ -x "$dir/build" ]]; then
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printf "\n"
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info "Building image in $dir"
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if $dir/build $ARGS; then
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success "Successfully built image in $dir"
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status[$image]="rebuilt"
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else
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warn "Failed to build image in $dir"
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fi
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fi
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}
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function init_image {
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local img_dir=$1
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set_defaults
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[ -f $TOPDIR/.buildconf ] && . $TOPDIR/.buildconf
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[ -f $img_dir/.buildconf ] && . $img_dir/.buildconf
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if [ ! -z $FORCE_NAMESPACE ]; then
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NAMESPACE=$FORCE_NAMESPACE
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fi
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local image="${NAMESPACE:+${NAMESPACE}/}${PREFIX}${img_dir##*/}"
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local base_image=$(cat $img_dir/Dockerfile | gawk 'match($0, /^\s*FROM\s+(\S+)/, matches) {print matches[1]}' )
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img_dirs[$image]=$img_dir
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dependency[$image]=$base_image
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# Restore defaults to minimize risk of side effects
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set_defaults
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}
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function process_image {
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local image=$1
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if [ ${dependency[$image]} ]; then
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process_image ${dependency[$image]}
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fi
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if requires_build $image; then
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build_image ${img_dirs[$image]}
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fi
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if [ -z ${status[$image]} ]; then
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status[$image]="processed"
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fi
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}
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function usage () {
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read -r -d '' HELP <<EOF
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A wrapper to build-docker-image that build all images in order.
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Options:
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--from <git-revision>
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--to <git-revision>
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$($TOPDIR/tools/build-docker-image --help)
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EOF
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printf "%s\n" "${HELP/$TOPDIR\/tools\/build-docker-image/$0}"
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}
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ARGS=$@
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PARSED_ARGS=$(getopt -q -o hn: -l help,namespace:,from:,to: -- "$@")
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eval set -- "$PARSED_ARGS"
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while :; do
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case "$1" in
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(--help|-h) usage
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exit 0
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;;
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(--namespace|-n)
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shift
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FORCE_NAMESPACE="$1"
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;;
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(--from)
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shift
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FROM="$1"
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ARGS=${ARGS/\-\-from*$FROM/}
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;;
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(--to)
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shift
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TO="$1"
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ARGS=${ARGS/\-\-to*$TO/}
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;;
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(--) break
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;;
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esac
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shift
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done
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# Do a first pass to find images to build and their dependencies
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for dockerfile in $(find $DOCKERDIR -name Dockerfile); do
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init_image $(dirname $dockerfile)
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done
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# Process all images
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for image in "${!img_dirs[@]}"; do
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process_image $image
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done
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# Report failed images
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for image in "${!status[@]}"; do
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if [ -z ${status[$image]} ]; then
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warn "Failed to process $image"
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fi
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done
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