loki/make.sh at main · normal-computing/loki · GitHub

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#!/usr/bin/env bash
# shellcheck disable=SC3010,SC3040,SC3043,SC3060
set -euCo pipefail

owner='normal-computing'
project='loki'
repository='loki'
registry='ghcr.io'
version='3.5.1'

build_id=$(git describe --tags HEAD 2>/dev/null \
               || git describe --match=NeVeRmAtCh --always --abbrev=32 --dirty)
git_ref=$(git rev-parse --verify HEAD)
image="$registry/$owner/$project:$build_id"
image_source="https://github.com/$owner/$repository"
image_url="$image_source"
now=$(date -u +%FT%TZ)

main_build() {
    ctr=$(buildah from "docker.io/grafana/loki:$version")
    cleanup() {
        buildah rm "$ctr"
    }
    trap cleanup EXIT
    buildah config --user 65534 "$ctr"
    buildah config --author "$owner" "$ctr"
    buildah config --annotation org.opencontainers.image.authors="$owner" "$ctr"
    buildah config --annotation org.opencontainers.image.created="$now" "$ctr"
    buildah config --annotation org.opencontainers.image.revision="$git_ref" "$ctr"
    buildah config --annotation org.opencontainers.image.source="$image_source" "$ctr"
    buildah config --annotation org.opencontainers.image.url="$image_url" "$ctr"
    buildah config --annotation org.opencontainers.image.version="$build_id" "$ctr"
    buildah commit "$ctr" "$image"
    cleanup
    trap - EXIT
}

main_check() {
	shellcheck -- *.sh
}

main_push() {
    buildah push "$image"
    if [[ -n "${tag_latest:-}" ]]; then
        buildah push "$image" "$registry/$owner/$project:latest"
    fi
    if [[ -n "${GITHUB_OUTPUT:-}" ]]; then
        echo "build-id=$build_id" >>"$GITHUB_OUTPUT"
    fi
}

main_update() {
    local new_version
    if ! new_version=$(curl -sSfL "https://hub.docker.com/v2/repositories/grafana/loki/tags?page_size=100&ordering=last_updated" | \
        jq -r '.results|.[]|.name' | \
        grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | \
        sort -V | \
        tail -n1); then
        echo "failed to get new version from docker hub tags" >&2; exit 1
    fi
    if [[ -z "$new_version" ]]; then
        echo "failed to get a non empty version from docker hub tags" >&2; exit 2
    fi
    if [[ "$new_version" == "$version" ]]; then
        exit 0
    fi
    echo "Updating the repository to $project version $new_version"
    version="${version//./\\.}"
    sed -e "s!^version='$version'\$!version='$new_version'!" -i make.sh
    local uri
    uri="$registry/$owner/$project"
    sed -E "s!$uri:$version-[0-9]+!$uri:$new_version-0!" -i README.md
}

usage() {
    if [[ -n "${1:-}" ]]; then
        echo "$1" >&2
    fi
    echo "Usage:" >&2
    echo "    $0  build     # build the container image." >&2
    echo "    $0  check     # run checks." >&2
    echo "    $0  push      # push the container image to the container registry." >&2
    echo "    $0  update    # update the base image version" >&2
    echo "Global options:" >&2
    echo "    -h, --help       # show this help message'" >&2
    echo "    -v, --verbose    # verbose mode via set -x" >&2
    echo "Action specific options:" >&2
    echo "    -t, --tag-latest  # also push the built image to latest" >&2
    exit 1
}

PARSED=$(getopt -o htv -l help,tag-latest,verbose --name "$0" -- "$@") || exit 2
eval set -- "$PARSED"

while true; do
    case "$1" in
        -h|--help) usage ;;
        -t|--tag-latest) tag_latest=1; shift ;;
        -v|--verbose) verbose=1; shift ;;
        --) shift; break ;;
        *) break ;;
    esac
done

action="${1:-}"
shift || true
if [[ -n "${verbose:-}" ]]; then set -x; fi
case "$action" in
    build) main_build ;;
    check) main_check ;;
    push) main_push ;;
    update) main_update ;;
    "") usage ;;
    *) usage "Unknown action: $action" ;;
esac