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#!/bin/bash
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#
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# Copyright (C) 2009 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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set -e
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defaults_file=@SYSCONFDIR@/default/ganeti
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NODED_ARGS=
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MASTERD_ARGS=
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CONFD_ARGS=
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RAPI_ARGS=
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# Read defaults file if it exists
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if [[ -s $defaults_file ]]; then
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  . $defaults_file
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fi
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_daemon_pidfile() {
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  echo "@LOCALSTATEDIR@/run/ganeti/$1.pid"
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}
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# Checks whether daemon is running
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check() {
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  if [[ "$#" -lt 1 ]]; then
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    echo 'Missing daemon name.' >&2
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    exit 1
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  fi
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  local name="$1"; shift
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  start-stop-daemon --stop --signal 0 --quiet \
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    --pidfile $(_daemon_pidfile $name)
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}
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# Starts a daemon
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start() {
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  if [[ "$#" -lt 1 ]]; then
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    echo 'Missing daemon name.' >&2
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    exit 1
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  fi
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  local name="$1"; shift
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  # Convert daemon name to uppercase after removing "ganeti-" prefix
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  local ucname=$(tr a-z A-Z <<< ${name#ganeti-})
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  # Read $<daemon>_ARGS and $EXTRA_<daemon>_ARGS
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  eval local args="\$${ucname}_ARGS \$EXTRA_${ucname}_ARGS"
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  start-stop-daemon --start --quiet --oknodo \
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    --pidfile $(_daemon_pidfile $name) \
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    --startas "@PREFIX@/sbin/$name" \
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    -- $args "$@"
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}
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# Stops a daemon
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stop() {
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  if [[ "$#" -lt 1 ]]; then
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    echo 'Missing daemon name.' >&2
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    exit 1
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  fi
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  local name="$1"; shift
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  start-stop-daemon --stop --quiet --oknodo --retry 30 \
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    --pidfile $(_daemon_pidfile $name)
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}
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# Starts a daemon if it's not yet running
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check_and_start() {
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  local name="$1"
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  if ! check $name; then
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    start $name
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  fi
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}
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# Starts the master role
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start_master() {
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  start ganeti-masterd
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  start ganeti-rapi
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}
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# Stops the master role
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stop_master() {
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  stop ganeti-rapi
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  stop ganeti-masterd
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}
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if [[ "$#" -lt 1 ]]; then
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  echo "Usage: $0 <action>" >&2
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  exit 1
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fi
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orig_action=$1; shift
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# Replace all dashes (-) with underlines (_)
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action=${orig_action//-/_}
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# Is it a known function?
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if ! declare -F "$action" >/dev/null 2>&1; then
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  echo "Unknown command: $orig_action" >&2
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  exit 1
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fi
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# Call handler function
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$action "$@"