monica/generate-stackbrew-library.sh
2020-02-28 12:40:45 +01:00

92 lines
2.5 KiB
Bash
Executable File

#!/bin/bash
set -euo pipefail
self="$(basename "$BASH_SOURCE")"
cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
defaultVariant='apache'
# Get the most recent commit which modified any of "$@".
fileCommit() {
git log -1 --format='format:%H' HEAD -- "$@"
}
# Get the most recent commit which modified "$1/Dockerfile" or any file that
# the Dockerfile copies into the rootfs (with COPY).
dockerfileCommit() {
local dir="$1"; shift
(
cd "$dir";
fileCommit Dockerfile \
$(git show HEAD:./Dockerfile | awk '
toupper($1) == "COPY" {
for (i = 2; i < NF; i++)
print $i;
}
')
)
}
getArches() {
local repo="$1"; shift
local officialImagesUrl='https://github.com/docker-library/official-images/raw/master/library/'
eval "declare -g -A parentRepoToArches=( $(
find -maxdepth 3 -name 'Dockerfile' -exec awk '
toupper($1) == "FROM" && $2 !~ /^('"$repo"'|scratch|microsoft\/[^:]+)(:|$)/ {
print "'"$officialImagesUrl"'" $2
}
' '{}' + \
| sort -u \
| xargs bashbrew cat --format '[{{ .RepoName }}:{{ .TagName }}]="{{ join " " .TagEntry.Architectures }}"'
) )"
}
getArches 'monica'
# Header.
cat <<-EOH
# This file is generated via https://github.com/monicahq/docker/blob/$(fileCommit "$self")/$self
Maintainers: Alexis Saettler <alexis@saettler.org>
GitRepo: https://github.com/monicahq/docker.git
EOH
# prints "$2$1$3$1...$N"
join() {
local sep="$1"; shift
local out; printf -v out "${sep//%/%%}%s" "$@"
echo "${out#$sep}"
}
SEARCHFOR="Upgrade available - the latest version is "
latest="$(curl -fsSL 'https://api.github.com/repos/monicahq/monica/releases/latest' | jq -r '.tag_name')"
variants=( */ )
variants=( "${variants[@]%/}" )
for variant in "${variants[@]}"; do
commit="$(dockerfileCommit "$variant")"
fullversion="$(git show "$commit":"$variant/Dockerfile" | grep -iF "ENV MONICA_VERSION" | sed -E "s@ENV MONICA_VERSION v([0-9.]+)@\1@")"
versionAliases=( "$fullversion" "${fullversion%.*}" "${fullversion%.*.*}" )
if [ "$fullversion" = "$latest" ]; then
versionAliases+=( "latest" )
fi
variantAliases=( "${versionAliases[@]/%/-$variant}" )
variantAliases=( "${variantAliases[@]//latest-}" )
if [ "$variant" = "$defaultVariant" ]; then
variantAliases+=( "${versionAliases[@]}" )
fi
variantParent="$(awk 'toupper($1) == "FROM" { print $2 }' "$variant/Dockerfile")"
variantArches="${parentRepoToArches[$variantParent]}"
cat <<-EOE
Tags: $(join ', ' "${variantAliases[@]}")
Architectures: $(join ', ' $variantArches)
Directory: $variant
GitCommit: $commit
EOE
done