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#!/usr/bin/env bash
################################################################################
#
# The MIT License (MIT)
#
# Copyright (c) 2018 Stéphane Desneux <sdx@iot.bzh>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
################################################################################
function _getgitmanifest() {
# this function takes the setup.manifest generated by setup script and uses DIST_METADIR
# to analyze git repos
local manifest=$1 mode=$2
[[ -f $manifest ]] && source $manifest || { echo "$BASH_SOURCE: Invalid setup manifest '$manifest'" >&2; return 1; }
[[ ! -d "$DIST_METADIR" ]] && {
echo "$BASH_SOURCE: Invalid meta directory. Check variable DIST_METADIR in manifest file '$manifest'." >&2
echo "$BASH_SOURCE: Also, check directory '$DIST_METADIR'." >&2
return 2
}
local GIT=$(which git) REALPATH=$(which realpath)
[[ ! -x $GIT ]] && { echo "$BASH_SOURCE: Unable to find git command in $PATH." >&2; return 3; }
[[ ! -x $REALPATH ]] && { echo "$BASH_SOURCE: Unable to find realpath command in $PATH." >&2; return 4; }
local gitrepo gitrev metagitdir sep=""
DIST_LAYERS=""
for metagitdir in $(ls -d $DIST_METADIR/*/.git); do
gitrepo=$($REALPATH -Ls $metagitdir/.. --relative-to=$DIST_METADIR)
pushd $DIST_METADIR/$gitrepo &>/dev/null && {
gitrev=$( { $GIT describe --long --dirty --always 2>/dev/null || echo "unknown_revision"; } | tr ' \t' '__' )
popd &>/dev/null
} || {
gitrev=unknown
}
DIST_LAYERS="${DIST_LAYERS}${sep}${gitrepo}:${gitrev}"
sep=" "
done
# layers checksum
DIST_LAYERS_MD5=$(echo $DIST_LAYERS|md5sum -|awk '{print $1;}')
# compute build hash
DIST_BUILD_HASH="F${DIST_FEATURES_MD5:0:8}-L${DIST_LAYERS_MD5:0:8}"
DIST_BUILD_ID="${DIST_DISTRO_NAME}-${DIST_MACHINE}-F${DIST_FEATURES_MD5:0:8}-L${DIST_LAYERS_MD5:0:8}"
# compute setup manifest path and build TS
DIST_SETUP_MANIFEST="$($REALPATH $manifest)"
# Manifest build timestamp
DIST_BUILD_TS="$(date -u +%Y%m%d_%H%M%S_%Z)"
# what to retain from setup manifest?
# to generate the full list: cat setup.manifest | grep = | cut -f1 -d"=" | awk '{printf("%s ",$1);}'
declare -A SETUP_VARS
SETUP_VARS[deploy]="DIST_MACHINE DIST_FEATURES DIST_FEATURES_MD5 DIST_BUILD_HOST DIST_BUILD_OS DIST_SETUP_TS"
SETUP_VARS[target]="DIST_MACHINE DIST_FEATURES"
SETUP_VARS[sdk]="DIST_MACHINE DIST_FEATURES"
# extra vars not coming from setup.manifest but generated here
declare -A EXTRA_VARS
EXTRA_VARS[deploy]="DIST_SETUP_MANIFEST DIST_BUILD_TS DIST_LAYERS DIST_LAYERS_MD5 DIST_BUILD_HASH DIST_BUILD_ID"
EXTRA_VARS[target]="DIST_LAYERS DIST_BUILD_HASH DIST_BUILD_ID"
EXTRA_VARS[sdk]="DIST_LAYERS DIST_BUILD_HASH DIST_BUILD_ID"
echo "# setup variables in $mode mode"
for x in ${SETUP_VARS[$mode]}; do
echo "$x=\"${!x}\""
done
echo
echo "# set by $BASH_SOURCE"
for x in ${EXTRA_VARS[$mode]}; do
echo "$x=\"${!x}\""
done
}
function getmanifest() {
local rc=0
echo "# DISTRO BUILD MANIFEST"
echo
# add layers manifest
echo "# ----- this fragment has been generated by $BASH_SOURCE"
_getgitmanifest $1 $2 || rc=$?
echo "# ------------ end of $BASH_SOURCE fragment --------"
return $rc
}
set -e
verbose=0
if [[ "$1" =~ ^(-v|--verbose)$ ]]; then
shift
verbose=1
fi
if [[ -f "$1" ]]; then
manifest=$1
shift
# default mode
mode=${1:-deploy}
case $mode in
deploy|target|sdk) mode=$mode;;
*) echo "Invalid mode specified. Allow modes are: deploy target sdk"; exit 42;;
esac
getmanifest $manifest $mode | { [[ $verbose == 1 ]] && cat || sed -e 's/#.*$//g;/^\s*$/d'; }
exit ${PIPESTATUS[0]}
else
cat <<EOF >&2
Usage: $0 [-v|--verbose] <setup_manifest_file> [mode]
Options:
-v|--verbose: generate comments in the output file
<setup_manifest_file> is generated from setup script in the specified build dir
[mode] specifies the destination for the generated manifest
Accepted values:
'deploy' : for the tmp/deploy/images/* directories
'target' : for the manifest to be installed inside a target image
'sdk' : for the manifest to be installed inside the SDK
EOF
exit 56
fi
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