#!/bin/sh

# build_test - a build testing script
#
# Copyright (C) 2008 by Xorcom <support@xorcom.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# Setup:
#
# 0. Copy this script under build_tools/ and 
#
#     chmod +x build_tools/builder
#
# 1. Make sure you have git and sqlite3 installed. If the sqlite3 binary 
#    is called differently, fix the line "SQLITE=" in the script or in 
#    build_tools/test_build.conf .
# 
# 2. Run:
#
#   ./build_tools/test_kernel_git init /path/to/some/dir
#
# /path/to/some/dir must exist . This will download a recent kernel 
# git repository to /path/to/some/dir/linux-2.6 . Use 
# './build_tools/test_kernel_git update' to pull a fresh update there.
# 
# 3. Run:
#
#   ./build_tools/builder init
#
# 
# Usage:
#
#   ./build_tools build
#
# The past results are in a sqlite database in the logs subdirectory. For 
# a simple list of results:
# 
#   ./build_tools report
#
# You can also look at the build log for a specific build in the logs 
# directory.

BIN_DIR=`dirname $0`
BASE_DIR=`dirname $BIN_DIR`
SQLITE=sqlite3
HOSTS="localhost"
LOGS_DIR="$BASE_DIR/logs"
DB=$LOGS_DIR/builds.db
BUILD_SCRIPT=$BIN_DIR/test_kernel_git
KERNELS_localhost="2.6.12 2.6.18 2.6.25"

usage() {
	me=`basename $0`
	echo "$me: test building Zaptel/DAHDI with various kernels"
	echo ""
	echo "Usage: $0 command <optional parameters>"
	echo "  init                Create results directory and database."
	echo "  build [<kernels>]   Run the test builds. The default list: "
	echo "                      $KERNELS_localhost"
	echo "  report [<filter>]   Print all results [matching <filter>]"
	echo "                      Default is to print all the resaults."
	echo ""
	echo "Filters:"
	echo "   failed:          Only failed tests."
	echo "   fail_type <type> Where fail_type matches <type>."
	echo "   2.6*             Only builds for a matching kernel version."
	echo "   Else:            Match a string from the build name, which "
	echo "                    is essentially the time it started."
	echo ""
}

set -e

if [ -r $BIN_DIR/test_build.conf ]; then . $BIN_DIR/test_build.conf; fi

# Runs the test script, logs the result, and fails if the test command 
# has failed.
build_and_check() {
	test_name="$1"
	test_cmd="$2"
	log_file="$3"
	results_str="$4"
	fail_type=''

	set +e
	$BUILD_SCRIPT $test_cmd >$log_file 2>&1
	rc=$?
	set -e
	if [ $rc != 0 ]; then
		fail_type="$test_name"
		echo "$results_str, $rc, '$fail_type', '$log_file');" | $SQLITE $DB
	fi
	return $rc
}

build_zaptel() {
	build_name="$1"
	host="$2"
	kvers="$3"
	log_base="build__${build_name}__${host}__${kvers}"
	log_base_full="$LOGS_DIR/$log_base"
	log_file="$log_base_full.log"
	results_str="INSERT INTO results VALUES ('$build_name', '$host', '$kvers'"
	# Due to 'set -e' a failed test exists the script.
	build_and_check setver "setver $kvers" "$log_file" "$results_str"
	build_and_check clean "test clean" "$log_file" "$results_str"
	build_and_check build "build" "$log_file" "$results_str"

	# If we got here, all was well.
	echo "$results_str, 0, 'complete', '$log_file');" | $SQLITE $DB
}

case "$1" in
init)
	mkdir -p $LOGS_DIR
	cat <<EOF | $SQLITE $DB
CREATE TABLE runs(name TEXT PRIMARY KEY, time INTEGER DEFAULT CURRENT_TIMESTAMP, driver_ver TEXT);
CREATE TABLE results(name TEXT, system TEXT, kvers TEXT, result INTEGER, fail_type TEXT, log TEXT);
EOF
	mkdir -p $LOGS_DIR
	;;

build)
	cd $BASE_DIR
	shift
	
	if [ "$*" != '' ]; then KERNELS_localhost="$*"; fi
	driver_ver=`$BUILD_SCRIPT version_driver`
	build_name=`date '+%Y%m%d-%H%M%si'`

	echo "INSERT INTO runs (name, driver_ver) VALUES ('$build_name', '$driver_ver');" | $SQLITE $DB

	for host in $HOSTS; do
		eval kernels="\$KERNELS_$host"
		for kvers in $kernels; do
			build_zaptel $build_name $host $kvers
		done
	done
	;;
report)
	case "$2" in
	'')   where='1=1' ;;
	failed) where='result != 0' ;;
	fail_type) where="fail_type like \"%$3%\"" ;;
	2.6*) where="kvers like \"$2%\"" ;;
	*)    where="name like \"%$2%\"" ;;
	esac

	echo "select * from results where $where;" | $SQLITE $DB
	;;
*)
	usage
	echo >&2 "$0: Unknown command '$1'. Aborting."
	exit 1
esac