Cortex Metrics FreeBSD rc.d script

cortex.sh

#!/bin/sh

# PROVIDE: cortex
# REQUIRE: DAEMON
# KEYWORD: shutdown

#
# Add the following lines to /etc/rc.conf to enable cortex:
#
# cortex_enable (bool):         Set to "NO" by default.
#                               Set it to "YES" to enable cortex
# cortex_config (path):         Set to "/usr/local/etc/cortex" by default
#                               Set to directory to store cortex config
# cortex_logfile (str):         Set to "/var/log/cortex.log" by default.
#                               Set it to file where stdout/stderr are logged.
# cortex_syslog_enable (bool):  Set to YES by default
#                               Set it to NO to disable syslog output
# cortex_syslog_tag (str):      Set to "cortex" by default.
#                               Set syslog tag if syslog enabled
# cortex_syslog_priority (str): Set to "info" by default.
#                               Set syslog priority if syslog enabled
# cortex_syslog_facility (str): Set to "daemon" by default.
#                               Set syslog facility if syslog enabled
# cortex_user (str):            Set to "cortex" by default.
#                               Set it to user to run cortex under
# cortex_group (str):           Set to "cortex" by default.
#                               Set it to group to run cortex under
#
. /etc/rc.subr

name=cortex
rcvar=cortex_enable

load_rc_config ${name}

: ${cortex_enable:="NO"}
: ${cortex_syslog_enable:="YES"}
: ${cortex_config:="/usr/local/etc/cortex/config.yml"}
: ${cortex_logfile:="/var/log/cortex.log"}
: ${cortex_user:="cortex"}
: ${cortex_group:="cortex"}

start_precmd="cortex_start_precmd"

if checkyesno cortex_syslog_enable; then
    if [ -n "${cortex_syslog_tag}" ]; then
        cortex_syslog_output_flags="-T ${cortex_syslog_tag}"
    else
        cortex_syslog_output_flags="-T ${name}"
    fi
    if [ -n "${cortex_syslog_priority}" ]; then
        cortex_syslog_output_flags="${cortex_syslog_output_flags} -s ${cortex_syslog_priority}"
    fi
    if [ -n "${cortex_syslog_facility}" ]; then
        cortex_syslog_output_flags="${cortex_syslog_output_flags} -l ${cortex_syslog_facility}"
    fi
else
    cortex_syslog_output_flags="-o ${cortex_logfile}"
fi

# legacy compatibility
if [ -n "${cortex_config}" ]; then
    cortex_config_flag="-config.file=\"${cortex_config}\""
fi

pidfile="/var/run/${name}.pid"
procname="/usr/local/bin/cortex"
command="/usr/sbin/daemon"
command_args="-f -t ${name} ${cortex_syslog_output_flags} -p ${pidfile} ${procname} ${cortex_config_flag}"

cortex_start_precmd()
{
    if [ ! -e "${pidfile}" ]; then
        install -m 0600 -o "${cortex_user}" -g "${cortex_group}" /dev/null "${pidfile}"
    fi

    if [ -n "${cortex_config}" -a ! -d "${cortex_config}" ]; then
        install -d -m 0750 -o "${cortex_user}" -g "${cortex_group}" "${cortex_config}"
    fi

    if ! checkyesno cortex_syslog_enable && [ ! -e "${cortex_logfile}" ]; then
        install -m 0640 -o "${cortex_user}" -g "${cortex_group}" /dev/null "${cortex_logfile}"
    fi
}

run_rc_command "$1"