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#!/bin/sh

# PROVIDE: prometheus
# REQUIRE: LOGIN
# KEYWORD: shutdown
#
# Add the following lines to /etc/rc.conf.local or /etc/rc.conf
# to enable this service:
#
# prometheus_enable (bool):     Set to NO by default
#                               Set it to YES to enable prometheus
# prometheus_user (string):     Set user to run prometheus
#                               Default is "prometheus"
# prometheus_group (string):    Set group to run prometheus
#                               Default is "prometheus"
# prometheus_data_dir (string): Set dir to run prometheus in
#                               Default is "/var/db/prometheus"
# prometheus_log_file (string): Set file that prometheus will log to
#                               Default is "/var/log/prometheus.log"
# prometheus_args (string):     Set additional command line arguments
#                               Default is ""

. /etc/rc.subr

name=prometheus
rcvar=prometheus_enable

load_rc_config $name

: ${prometheus_enable:="NO"}
: ${prometheus_user:="prometheus"}
: ${prometheus_group:="prometheus"}
: ${prometheus_config:="%%PREFIX%%/etc/prometheus.yml"}
: ${prometheus_data_dir:="/var/db/prometheus"}
: ${prometheus_log_file:="/var/log/prometheus.log"}
: ${prometheus_args:=""}

pidfile=/var/run/prometheus.pid
required_files="${prometheus_config}"
command="/usr/sbin/daemon"
procname="%%PREFIX%%/bin/prometheus"
sig_reload=HUP
extra_commands="reload"
command_args="-p ${pidfile} /usr/bin/env ${procname} \
                -config.file=${prometheus_config} \
                -storage.local.path=${prometheus_data_dir} \
                ${prometheus_args} >> ${prometheus_log_file} 2>&1"

start_precmd=prometheus_startprecmd

prometheus_startprecmd()
{
    if [ ! -e ${pidfile} ]; then
        install -o ${prometheus_user} -g ${prometheus_group} /dev/null ${pidfile};
    fi
    if [ ! -f "${prometheus_log_file}" ]; then
        install -o ${prometheus_user} -g ${prometheus_group} -m 640 /dev/null ${prometheus_log_file};
    fi
    if [ ! -d ${prometheus_data_dir} ]; then
        install -d -o ${prometheus_user} -g ${prometheus_group} -m 750 ${prometheus_data_dir}
    fi
}

load_rc_config $name
run_rc_command "$1"