automated package source updates on the openSUSE Build Service

.gitignore

*~

obs-auto-push

#!/bin/bash
#
# obs-auto-push: - automated package source updates on the
#                  "openSUSE Build Service"
#                - currently support for git origins only
#
#         usage: - set your paths in config section below
#                - see --help
#
# Copyright (C) 2011 Ruediger Meier <sweet_f_a@gmx.de>
# License: BSD 3-Clause




#### source some stuff to be used everywhere, don't touch it!
NOW_T="$(date +"%s")" || exit 1
NOW_HUMAN="$(date -d "@${NOW_T}" +"%F %T")" || exit 1




#### config section 

# Note we have two macros available here, %PACKAGE% and %VERSION%. They will
# be expanded at runtime of this scripts.

# Specify your obs and snapshot (git) directories. They must exist for packages
# given as command line option.
# Warning, this scripts behaves not nice against these dirs, so don't use
# them for your regular work unless you know what you are doing.
OBS_DIR="/home/rudi/devel/osc/home:rudi_m:devel-snap/%PACKAGE%"
SNAP_DIR="/home/rudi/devel/snap/%PACKAGE%"

# The following patterns should match your naming style.
# The untarred source directory name (root of the tar ball):
TAR_PREFIX="%PACKAGE%-%VERSION%"
# Name of source tar ball ( must be .tar.gz if UPDATE_DEB=yes):
TAR_NAME="%PACKAGE%-%VERSION%.tar.xz"

# Your packages are rpm and/or debian conform?
UPDATE_RPM="yes"
UPDATE_DEB="no"

# customize osc commit message
OSC_COMMIT_MSG="obs-auto-push ${NOW_HUMAN}: update %VERSION%"




#### defaults, don't change!

PACKAGE=""
PULL_BRANCH="master"
PULL_REMOTE="origin"

# for testing, say yes to nodt push to obs
DRY_RUN="no"
# force pushing to obs even we think it's up-to-date
FORCE="no"

# do not change this! It must be calculated
VERSION="unknown"




#### funcs

function prnt_dbg()
{
	echo "$@" >&2
}


function prnt_err()
{
        echo "error: $@" >&2
}


function print_usage()
{
        cat <<EOF
obs-auto-push 0.1.0
Usage: $0 [--branch] [--remote] [--force] [-t|--test] [--help|--version] \
[--] package
EOF
}


function parse_cmd()
{
	local tmp
	tmp=$(getopt -o t \
		--long branch:,remote:,force,test,help,version \
		-n "$0" -- "$@" \
		) || return 1
	eval set -- "$tmp"

	while true ; do
	case "$1" in
	--branch)
		PULL_BRANCH="$2"; shift 2;;
	--remote)
		PULL_REMOTE="$2"; shift 2;;
	--force)
		FORCE="yes"; shift 1;;
	-t|--test)
		DRY_RUN="yes"; shift 1;;
	--help|--version)
		print_usage; exit 0;;
	--)
		shift ; break ;;
	*)
		prnt_err "Internal getopt error!" ; return 1;;
	esac
	done

	#Remaining arguments:
	if test "$#" != 1  ;then
		prnt_err "bad usage, try --help"
		return 1
	fi
	
	PACKAGE="$1"
	return 0
}


# reset obs working copy to upstream
# return 0 on success or 1 on error
function fetch_obs()
{
	# Is all this safe to have a really clean working copy?
	osc revert .
	osc status | while read -r state file ;do
		rm -rf "$file"
	done

	osc update || return 1

	local dirty
	if ! dirty="$(osc status)" || test -n "${dirty}" ;then
		return 1
	fi
	return 0
}


# write yes/no if update is needed
# return 0 if pull was successful or 1 on error
function fetch_origin()
{
	local rev_head
	local rev_origin

	# WTF, can't we fetch branches and tags (forced update) with one command!?
	git fetch "${PULL_REMOTE}" 1>&2 || return 1
	git fetch --tags "${PULL_REMOTE}" 1>&2 || return 1

	rev_head="$( git rev-parse HEAD )" || return 1
	rev_origin="$( git rev-parse "${PULL_REMOTE}/${PULL_BRANCH}" )" || return 1
	if [ "${rev_head}" = "${rev_origin}" ] ; then
		echo no
		return 0
	fi

        # git reset or merge could be command line switches (merge would make
	# you able to mix upstream and local commits)
        git reset --hard "${PULL_REMOTE}/${PULL_BRANCH}" 1>&2 || return 1
	
	echo yes
	return 0
}


# write nice VERSION string
# Overwrite this function if you want other kind of versions strings or if this
# implementation doesn't work for your origin's git tag format
function get_version()
{
	local ver
	# get nice version, e.g. "v0.3.0-41-g0f6c"  -> "0.3.0.git41.g0f6c"
	ver="$( git describe --long --match "v[0-9]*" --abbrev=4 )" \
		|| return 1
	ver="$( echo ${ver} |sed 's/^v\(.*\)-\(.*\)-g\(.*\)/\1.git\2.\3/g' )" \
		|| return 1
	echo ${ver}
	return 0
}


# create the new tar ball
function make_dist()
{
	local compress
	case "${TAR_NAME}" in
		*.gz) compress="gzip -c --no-name" ;;
		*.bz2) compress="bzip2 -c" ;;
		*.xz) compress="xz -c" ;;
		*) prnt_err "invalid TAR_NAME '${TAR_NAME}'" ; return 1;;
	esac
	git archive HEAD --prefix="${TAR_PREFIX}/" \
		| ${compress} > "$OBS_DIR/${TAR_NAME}"  || return 1
}


# helper to print "md5sum size filname"
function deb_file_info()
{
	local md5
	local rest
	read md5 rest <<< "$( md5sum "$@" || return 1 )"
	stat --format "$md5 %s %n"  "$@" || return 1
	return 0
}


# helper, just expand some "macros"
function expand_macro()
{
	echo "$@" \
		| sed -e "s/%PACKAGE%/${PACKAGE}/g" \
		      -e "s/%VERSION%/${VERSION}/g" \
		|| return 1
	return 0
}


function update_spec_rpm()
{
	sed -e "s/^\(Version:[\t ]*\).*/\1${VERSION}/g" ${PACKAGE}.spec \
	        > "${PACKAGE}.spec_" || return 1
	mv "${PACKAGE}.spec_" "${PACKAGE}.spec" || return 1
}


function update_spec_deb()
{
	debfile1="$( deb_file_info "${TAR_NAME}" )" || return 1
	# warning debian release -1 is hardcoded here
	sed  "${PACKAGE}.dsc" \
		-e "s/^\(Version:[\t ]*\).*/\1${VERSION}-1/g" \
		-e "s/^\([\t ]*\).* ${PACKAGE}.*.tar.gz/\1${debfile1}/g" \
		> ${PACKAGE}.dsc_ || return 1
	mv "${PACKAGE}.dsc_" "${PACKAGE}.dsc" || return 1
}


function update_obs()
{
	if [ "${UPDATE_RPM}" = "yes" ] ; then
		update_spec_rpm || return 1
	fi
	if [ "${UPDATE_DEB}" = "yes" ] ; then
		update_spec_deb || return 1
	fi
	
	osc addremove || return 1
	return 0
}


function commit_obs()
{
	osc ci --skip-validation -m "${OSC_COMMIT_MSG}" || return 1
	return 0
}








#### here we go

if ! parse_cmd "$@" ;then
        exit 1
fi

OBS_DIR="$( expand_macro "${OBS_DIR}" )" || exit 1
SNAP_DIR="$( expand_macro "${SNAP_DIR}" )" || exit 1


# cleanup and pull obs dir
cd "${OBS_DIR}"  || exit 1
if ! fetch_obs ;then
	prnt_err "cannot cleanup obs working copy"
	exit 1
fi


# pull from git and check for updates
cd "${SNAP_DIR}"  || exit 1
NEED_UPDATE="$(fetch_origin)"  || exit 1
if [ "${NEED_UPDATE}" != "yes" ] ;then
	prnt_dbg "snap repo was up-to-date, no rebuild needed"
	if [ "${FORCE}" != "yes" ] ;then
		exit 0
	else
		prnt_dbg "rebuild forced"
	fi
fi

VERSION="$(get_version)" || exit 1
prnt_dbg "update version ${VERSION}"


OSC_COMMIT_MSG="$( expand_macro "${OSC_COMMIT_MSG}" )" || exit 1
TAR_PREFIX="$( expand_macro "${TAR_PREFIX}" )" || exit 1
TAR_NAME="$( expand_macro "${TAR_NAME}" )" || exit 1

# TODO very unsafe, conflicting
rm -f "${OBS_DIR}/${PACKAGE}"*.tar.*z || exit 1

make_dist || exit 1

cd "${OBS_DIR}" || exit 1
update_obs || exit 1

if [ "${DRY_RUN}" != "yes" ] ;then
	commit_obs || exit 1
fi

exit 0