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#!/bin/sh
#
# Copyright (C) 2014, Jaguar Land Rover
#
# Mozilla Public License, version 2.0. The full text of the
# Mozilla Public License is at https://www.mozilla.org/MPL/2.0/
#
#
# Setup a correct configuration and launch an RVI release node.
# If a UUID file has not been created, it will be done at this time.
# Init.d script to start and stop an RVI system installed
# through an RPM.
#
SELF_DIR=$(dirname $(readlink -f "$0"))
ERL=${ERL:=erl}
usage() {
echo "Usage: $0 -d config_dir -c config_file -l log_dir \\"
echo " start|stop|console|attach|ping"
echo
echo " -c config_file Configuration file to launch rvi node with. "
echo " If omitted the rvi_sample.config in the configuration "
echo " directory will be used."
echo
echo " -s short_name Erlang node short name. Defaults to 'rvi_core'"
echo
echo " -C cookie Erlang node cookie to use. Defaults to 'rvi_cookue'"
echo
echo " -d config_dir Directory to put generated uuid 'device_id' file and"
echo " processed config files."
echo " Defauts to the '/etc/opt/rvi'."
echo
echo " -l log_dir The directory to store log files in."
echo " Defaults to '/tmp/rvi/[config]/log' where [config]"
echo " is the base name of the configuration file."
echo
echo " console [defaut] Start an rvi in foreground mode."
echo
echo " start Start an rvi node with the given configuration file."
echo
echo " stop Stop an rvi node previously started with 'start'."
echo
echo " attach Attach to an rvi node previously started with 'start'."
echo
echo " ping Ping to check if an rvi node is up. Returns 0 if up."
exit 1
}
CONFIG_FILE=""
SNAME=rvi_core
COOKIE=rvi_cookie
unset CONFIG_DIR
unset LOG_DIR
while getopts "c:d:l:s:C:" o; do
case "${o}" in
s)
SNAME=${OPTARG}
;;
c)
CONFIG_FILE=${OPTARG}
;;
C)
COOKIE=${OPTARG}
;;
d)
CONFIG_DIR=${OPTARG}
;;
l)
LOG_DIR=${OPTARG}
;;
*)
usage
;;
esac
done
CONFIG_DIR=${CONFIG_DIR:=/etc/opt/rvi}
shift $((${OPTIND}-1))
if [ "${#}" = "0" ]
then
CMD="console"
else
CMD=$1
fi
if [ "${CMD}" != "start" -a "${CMD}" != "attach" -a "${CMD}" != "stop" -a "${CMD}" != "console" -a "${CMD}" != "ping" ]
then
usage
fi
export ERL_LIBS=${SELF_DIR}/rvi_core:${SELF_DIR}/rvi_core/deps:${SELF_DIR}/rvi_core/components
# Convert config dir to abs path
if [ $(echo ${CONFIG_DIR} | cut -c 1,1) != "/" ]
then
CONFIG_DIR=${PWD}/${CONFIG_DIR}
fi
# Check that we have a config dir
if [ ! -d ${CONFIG_DIR} ]
then
install -d --mode=0755 ${CONFIG_DIR}
fi
# Check if we have a uuid file.
if [ ! -f ${CONFIG_DIR}/device_id ]
then
echo "Creating device ID in ${CONFIG_DIR}/device_id"
cat /proc/sys/kernel/random/uuid > ${CONFIG_DIR}/device_id
fi
#
# See if we need to process a config file
#
if [ ${CMD} = "start" -o ${CMD} = "console" ]
then
# Default to rvi.config
CONFIG_FILE=${CONFIG_FILE:=${CONFIG_DIR}/rvi_sample.config}
#
# Check if we need to prepend current dir
# to relative config file path
#
if [ $(echo ${CONFIG_FILE} | cut -c 1,1) != "/" ]
then
CONFIG_FILE=${PWD}/${CONFIG_FILE}
fi
# Check that config file can be read.
if [ ! -r "${CONFIG_FILE}" ]
then
echo "${CONFIG_FILE} cannot be opened for reading."
usage
fi
#
# Generate a config file that will end up as
# /tmp/rvi/sys.config
#
(
cd ${CONFIG_DIR}
${SELF_DIR}/scripts/setup_gen rvi ${CONFIG_FILE} rvi
)
# Did we succeed with config generation?
if [ "$?" != "0" ]
then
# Nope
echo "Failed to process configuration file."
exit "$?"
fi
fi
TMP_DIR=/tmp/rvi/$(basename ${CONFIG_FILE} .config)
LOG_DIR=${LOG_DIR:=${TMP_DIR}/rvi/log}
if [ $(echo ${LOG_DIR} | cut -c 1,1) != "/" ]
then
LOG_DIR=${PWD}/${LOG_DIR}
fi
LAUNCH="${ERL} -boot ${CONFIG_DIR}/rvi/start -sname ${SNAME} -config ${CONFIG_DIR}/rvi/sys -setcookie ${COOKIE}"
case "${CMD}" in
start)
install -d --mode 0755 ${TMP_DIR}
install -d --mode 0755 ${LOG_DIR}
cd ${SELF_DIR}
exec run_erl -daemon ${TMP_DIR}/ ${LOG_DIR} "exec ${LAUNCH}"
;;
console)
cd ${SELF_DIR}
exec ${LAUNCH}
;;
stop)
exec ${SELF_DIR}/scripts/nodetool -sname ${SNAME} -setcookie ${COOKIE} stop
;;
ping)
exec ${SELF_DIR}/scripts/nodetool -sname ${SNAME} -setcookie ${COOKIE} ping
;;
attach)
exec to_erl ${TMP_DIR}
;;
esac
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