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#!/bin/bash
_APT_UPDATED=false
MEPH2_BRANCH="lp:maas-images"
SSTREAM_BRANCH="lp:simplestreams"
CROSS_DEPS=( qemu-user-static u-boot-tools )
MEPH2_D=""
# MEPH2_SIMPLESTREAMS can be:
# 'package': install the package
# 'system': use whatever 'import' provides
# 'branch': use the MEPH2_BRANCH
# 'auto': use system if available or distro (> trusty), or branch
MEPH2_SIMPLESTREAMS=${MEPH2_SIMPLESTREAMS:-"auto"}
MEPH2_UTIL_ONLY=${MEPH2_UTIL_ONLY:-"auto"}
error() { echo "$@" 1>&2; }
fail() { [ $# -eq 0 ] || error "$@"; exit 2; }
rel="$(lsb_release -sc)"
DEPS_UTIL_ONLY=(
bzr
python3
python3-yaml
)
DEPS_FULL=(
bzr
cloud-image-utils # for mount-image-callback
gpgv
python3-distro-info
python3-requests
python3-yaml
squashfs-tools
zerofree
)
apt_get() {
local ret=""
if [ "$1" != "update" ] && ! $_APT_UPDATED; then
error "updating apt"
apt_get update >/dev/null || {
ret=$?;
error "failed to update apt [$ret]";
return $ret;
}
_APT_UPDATED=true
fi
sudo DEBIAN_FRONTEND=noninteractive apt-get --quiet \
--assume-yes "$@" </dev/null
}
filter_installed_packages() {
# write to stdout, a list of packages not installed locally
local fmt='${Package} ${Version}\n'
LC_ALL=C dpkg-query --show "--showformat=${fmt}" "$@" 2>&1 | awk '
$0 ~ /[Nn]o packages/ {
sub("[.]$","",$NF);
pkgs[n]=$NF;
n=n+1;
}
$2 == "" {
pkgs[n]=$1;
n=n+1;
};
END { for(p in pkgs) {printf("%s ",pkgs[p])}; printf("\n"); }' n=0
}
apt_install() {
local needed
needed=$(filter_installed_packages "$@")
[ -z "$needed" ] && return 0
error "installing: $needed"
apt_get install "$@"
}
streams_package=true
if [[ "$rel" < trusty ]]; then
error "# WARN: building not supported prior to trusty" 1>&2
error "# WARN: but meph2-util (index operations) supported" 1>&2
[ "${MEPH2_SIMPLESTREAMS}" = "package" ] &&
fail "no distro simplestreams < trusty"
MEPH2_SIMPLESTREAMS="auto"
streams_package=false
def_meph2_only=true
else
def_meph2_only=false
fi
case "$MEPH2_UTIL_ONLY" in
false|0) meph2_only=false;;
auto) meph2_only=$def_meph2_only;;
*) meph2_only=true;;
esac
if $meph2_only; then
DEPS=( "${DEPS_UTIL_ONLY[@]}" )
else
DEPS=( "${DEPS_FULL[@]}" )
fi
if [ "$MEPH2_SIMPLESTREAMS" = "auto" ]; then
if python3 -c 'import simplestreams' >/dev/null 2>&1; then
MEPH2_SIMPLESTREAMS="system"
elif $streams_package; then
MEPH2_SIMPLESTREAMS="package"
else
MEPH2_SIMPLESTREAMS="branch"
fi
fi
[ "$MEPH2_SIMPLESTREAMS" = "package" ] &&
DEPS=( "${DEPS[@]}" python3-simplestreams )
me=$(readlink -f "$0")
myd=$(dirname "$me")
if [ -f "$myd/bin/meph2-cloudimg-sync" ]; then
MEPH2_D="$myd"
elif [ -f "$PWD/maas-images/bin/meph2-cloudimg-sync" ]; then
MEPH2_D="$PWD/maas-images"
fi
error "MEPH2_SIMPLESTREAMS=$MEPH2_SIMPLESTREAMS MEPH2_UTIL_ONLY=$meph2_only"
arch=$(dpkg --print-architecture)
deps=( "${DEPS[@]}" )
if [ "$arch" = "amd64" ] && ! $meph2_only; then
deps=( "${deps[@]}" "${CROSS_DEPS[@]}" )
fi
apt_install "${deps[@]}"
if [ -z "$MEPH2_D" ]; then
error "getting $MEPH2_BRANCH to $PWD/maas-images"
bzr branch "$MEPH2_BRANCH" maas-images ||
fail "failed branch $MEPH2_BRANCH"
MEPH2_D="$PWD/maas-images"
fi
if [ "$MEPH2_SIMPLESTREAMS" = "branch" ]; then
sstream_d="$MEPH2_D/simplestreams.bzr"
if [ ! -d "$sstream_d" ]; then
bzr branch "$SSTREAM_BRANCH" "$sstream_d" &&
ln -snf simplestreams.bzr/simplestreams "$MEPH2_D/simplestreams" ||
fail "failed to get $SSTREAM_BRANCH"
out=$(cd "$MEPH2_D" && python3 -c 'import simplestreams' 2>&1) ||
fail "error getting simplestreams: $out"
fi
fi
# vi: ts=4 expandtab
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