/usr/share/uwsgi/init/specific_daemon

specific_daemon

# This is shell script, (indirectly) sourced by uWSGI init.d script

. /usr/share/uwsgi/init/snippets

# Return:
#  0 if daemon has been started
#  1 if daemon was already running
#  2 if daemon could not be started
do_start_specific_daemon()
{
  local RELATIVE_CONFPATH="$@"

  local CONFFILE="$(absolute_path_to_conffile "$RELATIVE_CONFPATH")"
  if [ -z "$CONFFILE" ]; then
    return 2
  fi

  local CONFNAMESPACE="$(extract_confnamespace "$RELATIVE_CONFPATH")"
  local CONFNAME="$(extract_confname "$RELATIVE_CONFPATH")"

  local UWSGI_UID="$(extract_id uid "$RELATIVE_CONFPATH")"
  local UWSGI_GID="$(extract_id gid "$RELATIVE_CONFPATH")"

  local SPECIFIC_RUNDIR="$(find_specific_rundir "$RELATIVE_CONFPATH")"
  local PIDFILE="$(find_specific_pidfile "$RELATIVE_CONFPATH")"

  install -d -o root -g root -m 755 "${UWSGI_RUNDIR}/${CONFNAMESPACE}"
  install -d -o "$UWSGI_UID" -g "$UWSGI_GID" -m 755 "$SPECIFIC_RUNDIR"

  start-stop-daemon --start --quiet \
    --pidfile "$PIDFILE" \
    --exec "$DAEMON" \
    --test > /dev/null \
      || return 1

  local CONFTYPE="$(type_of_conffile "$CONFFILE")"
  local CONFFILE_OPTION_NAME="$(conffile_option_name "$CONFTYPE")"

  local INHERITED_TYPE="$(type_of_conffile "$INHERITED_CONFIG")"
  local INHERITED_OPTION_NAME="$(conffile_option_name "$INHERITED_TYPE")"

  # Value of an environment variable of form 'UWSGI_' is recognized by uWSGI as
  # an option value and is available in configuration files.
  #
  # Value of (fake) option 'deb-confnamespace' is used in INHERITED inherited
  # configuration file.
  UWSGI_DEB_CONFNAMESPACE="$CONFNAMESPACE" \
  UWSGI_DEB_CONFNAME="$CONFNAME" \
  start-stop-daemon --start --quiet \
    --pidfile "$PIDFILE" \
    --exec "$DAEMON" \
      -- --"${INHERITED_OPTION_NAME}" "${INHERITED_CONFIG}" \
         --"${CONFFILE_OPTION_NAME}" "${CONFFILE}" \
         --daemonize "/var/log/uwsgi/${CONFNAMESPACE}/${CONFNAME}.log" \
    1> /dev/null 2>&1 \
      || return 2

  chown_and_chmod_pidfile "$PIDFILE"

  start-stop-daemon --start --quiet \
    --pidfile "$PIDFILE" \
    --exec "$DAEMON" \
    --test > /dev/null \
      && return 2

  return 0
}

# Return:
#  0 if daemon has been stopped
#  1 if daemon was already stopped
#  2 if daemon could not be stopped
#  other if a failure occurred
do_stop_specific_daemon()
{
  local RELATIVE_CONFPATH="$@"
  local SPECIFIC_RUNDIR="$(find_specific_rundir "$RELATIVE_CONFPATH")"
  local PIDFILE="$(find_specific_pidfile "$RELATIVE_CONFPATH")"

  start-stop-daemon --stop --quiet \
    --retry=QUIT/30/KILL/5 \
    --pidfile "$PIDFILE"

  RETVAL="$?"
  [ "$RETVAL" = 2 ] && return 2

  rm -rf "$SPECIFIC_RUNDIR"

  return "$RETVAL"
}

# Return:
#  0 if daemon has been reloaded
#  3 if daemon could not be reloaded
do_reload_specific_daemon()
{
  local RELATIVE_CONFPATH="$@"
  local PIDFILE="$(find_specific_pidfile "$RELATIVE_CONFPATH")"

  start-stop-daemon --stop --quiet \
    --signal=HUP \
    --pidfile "$PIDFILE"

  RETVAL="$?"

  # There is no such process, nothing to reload!
  [ "$RETVAL" = 1 ] && RETVAL=3

  return "$RETVAL"
}

# Return:
#  0 if daemon has been reloaded
#  3 if daemon could not be reloaded
do_force_reload_specific_daemon()
{
  local RELATIVE_CONFPATH="$@"
  local PIDFILE="$(find_specific_pidfile "$RELATIVE_CONFPATH")"

  start-stop-daemon --stop --quiet \
    --signal=TERM \
    --pidfile "$PIDFILE"

  RETVAL="$?"

  # There is no such process, nothing to reload!
  [ "$RETVAL" = 1 ] && RETVAL=3

  return "$RETVAL"
}