# utility functions for ctdb event scripts

#######################################
# pull in a system config file, if any
loadconfig() {
    name="$1"
    if [ -f /etc/sysconfig/$name ]; then
	. /etc/sysconfig/$name
    elif [ -f /etc/default/$name ]; then
	. /etc/default/$name
    fi
}


######################################################
# simulate /sbin/service on platforms that don't have it
service() { 
  service_name="$1"
  op="$2"
  if [ -x /sbin/service ]; then
      /sbin/service "$service_name" "$op"
  elif [ -x /etc/init.d/$service_name ]; then
      /etc/init.d/$service_name "$op"
  elif [ -x /etc/rc.d/init.d/$service_name ]; then
      /etc/init.d/$service_name "$op"
  fi
}

######################################################
# wait for a set of tcp ports
# usage: ctdb_wait_tcp_ports SERICE_NAME <ports...>
######################################################
ctdb_wait_tcp_ports() {
  service_name="$1"
  shift
  wait_ports="$*"
  [ -z "$wait_ports" ] && return;
  all_ok=0
  echo "`/bin/date` Waiting for tcp service $service_name to start"
  while [ $all_ok -eq 0 ]; do
  	  all_ok=1
  	  for p in $wait_ports; do
	      if [ -x /usr/bin/netcat ]; then
	          /usr/bin/netcat -z 127.0.0.1 $p || all_ok=0
	      elif [ -x /usr/bin/nc ]; then
	          /usr/bin/nc -z 127.0.0.1 $p || all_ok=0
	      else 
		  echo "`date` netcat not found - cannot check tcp ports"
		  return
	      fi
	  done
	  [ $all_ok -eq 1 ] || sleep 1
	  /usr/bin/ctdb status > /dev/null 2>&1 || {
  		echo "ctdb daemon has died. Exiting tcp wait $service_name"
		exit 1
	  }
  done
  echo "`/bin/date` Local tcp services for $service_name are up"
}


######################################################
# wait for a set of directories
# usage: ctdb_wait_directories SERICE_NAME <directories...>
######################################################
ctdb_wait_directories() {
  service_name="$1"
  shift
  wait_dirs="$*"
  [ -z "$wait_dirs" ] && return;
  all_ok=0
  echo "`/bin/date` Waiting for local directories for $service_name"
  while [ $all_ok -eq 0 ]; do
  	  all_ok=1
  	  for d in $wait_dirs; do
  	      [ -d $d ] || all_ok=0
	  done
	  [ $all_ok -eq 1 ] || sleep 1
	  /usr/bin/ctdb status > /dev/null 2>&1 || {
  		echo "ctdb daemon has died. Exiting directory wait for $service_name"
		exit 1
	  }
  done
  echo "`/bin/date` Local directories for $service_name are available"
}