#!/sbin/openrc-run

# These two facilitate the bindir variable substitution below.
prefix=@prefix@
exec_prefix=@exec_prefix@

# This is a custom variable, and has the following default value if a
# specific config file is not defined by the user.
: ${NPCD_CONFIG:="@pkgsysconfdir@/npcd.cfg"}
: ${NAGIOS_CFG:="@NAGIOS_CFG@"}

# The rest are OpenRC variables.
extra_commands="checkconfig"
extra_started_commands="reload"

command="@bindir@/npcd"
command_args="-f ${NPCD_CONFIG}"
pidfile="@piddir@/npcd.pid"
verify="@pkgsysconfdir@/verify_pnp_config"

depend(){
  use logger
  after nagios
}

reload(){
  checkconfig || return $?
  ebegin "Reloading configuration"
  start-stop-daemon --signal KILL --pidfile "${pidfile}"
  eend $?
}

checkconfig(){
  ebegin "Verifying config files"

  # Save the output in case verification fails and errors are printed.
  OUTPUT=$( ${verify} -m bulk+npcd  -p "${NPCD_CONFIG}" -c "${NAGIOS_CFG}")

  # Save the exit code from the verification so that `echo` doesn't
  # clobber it. Then, if verification failed, show its
  # output. Otherwise, succeed quietly.
  local exit_code=$?
  [ $exit_code -ne 0 ] && echo "${OUTPUT}" >&2
  eend $exit_code
}

start_pre() {
  # Without this, the "start" action will appear to succeed even if
  # the config file contains errors, and the daemon fails to start.
  # Another approach would be to wait for the PID file to appear, but
  # this is fast enough and feels cleaner.
  checkconfig || return $?
}

stop_pre() {
  # If this is a restart, check to make sure the user's config
  # isn't busted before we stop the running daemon.
  if [ "${RC_CMD}" = "restart" ] ; then
    checkconfig || return $?
  fi
}