parse-pkgs.sh

#!/bin/bash
# Poor man's[1] yml generator
#
#
# [1] A poor man is a man on a deadline.
#

# if this has problems, it should fail right away
set -e

EVE="$(cd "$(dirname "$0")" && pwd)/../"
PATH="$EVE/build-tools/bin:$PATH"

get_git_tag() {
  echo "${EVE_HASH:-$(git tag -l --points-at HEAD | grep '[0-9]*\.[0-9]*\.[0-9]*' | head -1)}"
}

linuxkit_tag() {
    local pkg="$1"
    _linuxkit_tag 0 0 "${pkg}"
}

linuxkit_dev_tag() {
    local pkg="$1"
    _linuxkit_tag 0 1 "${pkg}"
}

linuxkit_kubevirt_tag() {
    local pkg="$1"
    _linuxkit_tag 1 0 "${pkg}"
}

linuxkit_kubevirt_dev_tag() {
    local pkg="$1"
    _linuxkit_tag 1 1 "${pkg}"
}

# Function returns tag generated by linuxkit for a given EVE package.
# Arguments: <is-kubevirt-build> <is-dev-build> <package>
# where <is-kubevirt-build> should be 1 if HV=kubevirt, 0 otherwise;
# <is-dev-build> should be 1 if DEV=y, 0 otherwise;
# <package> should be eve package name in the format "pkg/<name>" (e.g. "pkg/pillar").
_linuxkit_tag() {
    local is_kubevirt_build="$1"
    local is_dev_build="$2"
    local pkg="$3"
    local -a build_yml_cmd

    if [[ "${is_dev_build}" == 1 && "${is_kubevirt_build}" == 1 ]]; then
      build_yml_cmd=(--build-yml build-kubevirt-dev.yml)
    elif [[ "${is_dev_build}" == 1 ]]; then
      build_yml_cmd=(--build-yml build-dev.yml)
    elif [[ "${is_kubevirt_build}" == 1 ]]; then
      build_yml_cmd=(--build-yml build-kubevirt.yml)
    fi

    echo "$(linuxkit pkg show-tag "${build_yml_cmd[@]}" ${EVE_HASH:+--hash $EVE_HASH} "${EVE}/${pkg}")${ARCH}"
}

immutable_tag() {
  # we have to resolve symbolic tags like x.y.z or snapshot to something immutable
  # so that we can detect when the symbolic tag starts pointing a different immutable
  # object and thus trigger a new SHA for things like EVE
  docker inspect --format='{{.Id}}' "$1" 2>/dev/null ||
         docker inspect --format='{{index .RepoDigests 0}}' "$1" 2>/dev/null ||
         echo "$1"
}

external_tag() {
  # Since the tag is external to us, we can't rely on local git SHAs,
  # thus the best we can do is:
  #    1. if we're building a release from a tag, we expect external tag to be the same
  #    2. if we're NOT building from a tag, the external tag is simply snapshot
  local TAG
  TAG="$(get_git_tag)"
  PKG="$1:${TAG:-snapshot}${ARCH}"

  # for external packages we have to always try to pull first - otherwise
  # we may have something stale in our local Docker cache
  docker pull "$PKG" 2>/dev/null >&2 || echo "WARNING: couldn't fetch the latest $PKG - may be using stale cache" >&2
  if docker inspect "$PKG" >/dev/null 2>&1 ; then
    echo "$PKG"
  else
    echo "WARNING: failed to obtain $PKG - using $2 instead" >&2
    echo "$2"
  fi
}

synthetic_tag() {
  NAME=$1
  shift 1
  # ignore undefined EVE_TAG in resolve_tags because not defined yet
  # shellcheck disable=SC2086
  echo ${NAME}:${EVE_HASH:-$( (cat "$@" ; git rev-parse HEAD) | resolve_tags | git hash-object --stdin)}"$ARCH"
}

resolve_tags() {
  local tags="${1:-default}"
  local file="${2:-default}"
  if [ "$tags" != "default" ]; then
      local sedcmd
      sedcmd=$(echo "$tags" | sed -e "s/^/s#/g" -e "s/$/#g/g" -e "s/=/#/g")
      sed -e "$sedcmd" "${file:-}"
  fi
}

gen_tags() {
cat <<EOF
CURDIR=$(pwd)
ACRN_KERNEL_TAG=${ACRN_KERNEL_TAG}
KERNEL_TAG=${KERNEL_TAG}
FW_TAG=${FW_TAG}
XENTOOLS_TAG=${XENTOOLS_TAG}
DOM0ZTOOLS_TAG=${DOM0ZTOOLS_TAG}
RNGD_TAG=${RNGD_TAG}
XEN_TAG=${XEN_TAG}
ACRN_TAG=${ACRN_TAG}
DNSMASQ_TAG=${DNSMASQ_TAG}
TESTMSVCS_TAG=${TESTMSVCS_TAG}
PILLAR_TAG=${PILLAR_TAG}
PILLAR_DEV_TAG=${PILLAR_DEV_TAG}
PILLAR_KUBEVIRT_TAG=${PILLAR_KUBEVIRT_TAG}
PILLAR_KUBEVIRT_DEV_TAG=${PILLAR_KUBEVIRT_DEV_TAG}
STORAGE_INIT_TAG=${STORAGE_INIT_TAG}
WWAN_TAG=${WWAN_TAG}
WLAN_TAG=${WLAN_TAG}
GUACD_TAG=${GUACD_TAG}
GRUB_TAG=${GRUB_TAG}
UBOOT_TAG=${UBOOT_TAG}
GPTTOOLS_TAG=${GPTTOOLS_TAG}
NEWLOGD_TAG=${NEWLOGD_TAG}
NVIDIA_TAG=${NVIDIA_TAG}
EDGEVIEW_TAG=${EDGEVIEW_TAG}
WATCHDOG_TAG=${WATCHDOG_TAG}
MEMORY_MONITOR_TAG=${MEMORY_MONITOR_TAG}
MKRAW_TAG=${MKRAW_TAG}
MKISO_TAG=${MKISO_TAG}
MKCONF_TAG=${MKCONF_TAG}
DEBUG_TAG=${DEBUG_TAG}
VTPM_TAG=${VTPM_TAG}
UEFI_TAG=${UEFI_TAG}
EVE_TAG=${EVE_TAG:-}
KVMTOOLS_TAG=${KVMTOOLS_TAG}
IPXE_TAG=${IPXE_TAG}
KEXEC_TAG=${KEXEC_TAG}
KDUMP_TAG=${KDUMP_TAG}
BPFTRACE_TAG=${BPFTRACE_TAG}
MEASURE_CONFIG_TAG=${MEASURE_CONFIG_TAG}
BSP_IMX_TAG=${BSP_IMX_TAG}
APPARMOR_TAG=${APPARMOR_TAG}
KUBE_TAG=${KUBE_TAG}
RECOVERTPM_TAG=${RECOVERTPM_TAG}
UDEV_TAG=${UDEV_TAG}
INSTALLER_TAG=${INSTALLER_TAG}
EOF
}

if [ -z "$DOCKER_ARCH_TAG" ] ; then
  case $(uname -m) in
    x86_64) ARCH=-amd64
      ;;
    aarch64) ARCH=-arm64
      ;;
    *) echo "Unsupported architecture $(uname -m). Exiting" && exit 1
      ;;
  esac
else
  ARCH="-${DOCKER_ARCH_TAG}"
fi

ACRN_KERNEL_TAG=$(linuxkit_tag pkg/acrn-kernel)
FW_TAG=$(linuxkit_tag pkg/fw)
XENTOOLS_TAG=$(linuxkit_tag pkg/xen-tools)
XEN_TAG=$(linuxkit_tag pkg/xen)
ACRN_TAG=$(linuxkit_tag pkg/acrn)
GRUB_TAG=$(linuxkit_tag pkg/grub)
UBOOT_TAG=$(linuxkit_tag pkg/u-boot)
DNSMASQ_TAG=$(linuxkit_tag pkg/dnsmasq)
DOM0ZTOOLS_TAG=$(linuxkit_tag pkg/dom0-ztools)
RNGD_TAG=$(linuxkit_tag pkg/rngd)
NEWLOGD_TAG=$(linuxkit_tag pkg/newlog)
EDGEVIEW_TAG=$(linuxkit_tag pkg/edgeview)
WWAN_TAG=$(linuxkit_tag pkg/wwan)
WLAN_TAG=$(linuxkit_tag pkg/wlan)
GUACD_TAG=$(linuxkit_tag pkg/guacd)
PILLAR_TAG=$(linuxkit_tag pkg/pillar)
PILLAR_DEV_TAG=$(linuxkit_dev_tag pkg/pillar)
PILLAR_KUBEVIRT_TAG=$(linuxkit_kubevirt_tag pkg/pillar)
PILLAR_KUBEVIRT_DEV_TAG=$(linuxkit_kubevirt_dev_tag pkg/pillar)
STORAGE_INIT_TAG=$(linuxkit_tag pkg/storage-init)
GPTTOOLS_TAG=$(linuxkit_tag pkg/gpt-tools)
WATCHDOG_TAG=$(linuxkit_tag pkg/watchdog)
MEMORY_MONITOR_TAG=$(linuxkit_tag pkg/memory-monitor)
MKRAW_TAG=$(linuxkit_tag pkg/mkimage-raw-efi)
MKISO_TAG=$(linuxkit_tag pkg/mkimage-iso-efi)
MKCONF_TAG=$(linuxkit_tag pkg/mkconf)
NVIDIA_TAG=$(linuxkit_tag pkg/nvidia)
DEBUG_TAG=$(linuxkit_tag pkg/debug)
VTPM_TAG=$(linuxkit_tag pkg/vtpm)
UEFI_TAG=$(linuxkit_tag pkg/uefi)
KVMTOOLS_TAG=$(linuxkit_tag pkg/kvm-tools)
IPXE_TAG=$(linuxkit_tag pkg/ipxe)
KEXEC_TAG=$(linuxkit_tag pkg/kexec)
KDUMP_TAG=$(linuxkit_tag pkg/kdump)
BPFTRACE_TAG=$(linuxkit_tag pkg/bpftrace)
MEASURE_CONFIG_TAG=$(linuxkit_tag pkg/measure-config)
BSP_IMX_TAG=$(linuxkit_tag pkg/bsp-imx)
APPARMOR_TAG=$(linuxkit_tag pkg/apparmor)
KUBE_TAG=$(linuxkit_tag pkg/kube)
RECOVERTPM_TAG=$(linuxkit_tag pkg/recovertpm)
UDEV_TAG=$(linuxkit_tag pkg/udev)
INSTALLER_TAG=$(linuxkit_tag pkg/installer)

# Synthetic tags: the following tags are based on hashing
# the contents of all the Dockerfile.in that we can find.
# That way, these tags are guaranteed to change whenever
# *any* *single* dependency changes.
#
# These tags need to be declared last sine they depend
# on the previous tags being already defined.
EVE_TAG=$(synthetic_tag zededa/eve pkg/eve/Dockerfile.in)

TAGS=$(gen_tags)
if [ $# -ge 1 ]; then
  resolve_tags "$TAGS" "$1"
else
  echo "$TAGS"
fi