alleleRegistry_init

#!/bin/bash

# #########################
# ENVIRONMENT
# #########################
DIR_SCRIPTS="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
source ${DIR_SCRIPTS}/conf_runtime.sh
AR_STOPPED_FILE=${DIR_DATA}/alleleRegistry/locks/stopped

# #########################
# MAIN
# #########################

RETVAL=0

start() {
    # FILE CHECK, SETUP: Does the "server intentionally stopped" file exist?
          if [[ -e $AR_STOPPED_FILE ]]; then
            # Need to WAIT (block) until we can get a lock on it. This way we know nothing else is messing with it too.
            printf "Will wait for lock on ${AR_STOPPED_FILE} ...\n"
            exec 723< $AR_STOPPED_FILE
            flock -x 723
            haveLock=1
            printf "...lock obtained, will continue\n"
          else
            haveLock=0
          fi
    echo -n $"Starting Allele Registry:" $'\n'
    ${DIR_TARGET}/alleleRegistry/alleleRegistry ${DIR_DATA}/conf/alleleRegistry.yaml
    RETVAL=$?
    # FILE CHECK, CLEANUP: Do we need to remove the lock we obtained?
          if [[ $haveLock = 1 ]]; then
            flock -u 723
            printf "Lock released\n"
          fi
          # Regardless, remove the "server is intentionally stopped" file
          rm -f $AR_STOPPED_FILE
}

start_readonly() {
    # FILE CHECK, SETUP: Does the "server intentionally stopped" file exist?
          if [[ -e $AR_STOPPED_FILE ]]; then
            # Need to WAIT (block) until we can get a lock on it. This way we know nothing else is messing with it too.
            printf "Will wait for lock on ${AR_STOPPED_FILE} ...\n"
            exec 723< $AR_STOPPED_FILE
            flock -x 723
            haveLock=1
            printf "...lock obtained, will continue\n"
          else
            haveLock=0
          fi
    echo -n $"Starting Allele Registry in READ-ONLY mode:" $'\n'
    ${DIR_TARGET}/alleleRegistry/alleleRegistry ${DIR_DATA}/conf/alleleRegistry.yaml --read_only
    RETVAL=$?
    # FILE CHECK, CLEANUP: Do we need to remove the lock we obtained?
          if [[ $haveLock = 1 ]]; then
            flock -u 723
            printf "Lock released\n"
          fi
          # Regardless, remove the "server is intentionally stopped" file
          rm -f $AR_STOPPED_FILE
}

stop() {
    # FILE CHECK, SETUP: Does the "server intentionally stopped" file already exist?
          if [[ -e $AR_STOPPED_FILE ]]; then
            # Need to WAIT (block) until we can get a lock on it. This way we know nothing else is messing with it too.
            printf "Will wait for lock on ${AR_STOPPED_FILE} ...\n"
            exec 723< $AR_STOPPED_FILE
            flock -x 723
            haveLock=1
            printf "...lock obtained, will continue\n"
          else
            haveLock=0
          fi
    echo -n $"Shutting down Allele Registry:" $'\n'
    kill `ps -e | grep 'alleleRegistry$' | sed 's/^ *//g' | cut -d \  -f 1`
    RETVAL=$?
    # FILE CHECK, CLEANUP: Do we need to remove the lock we obtained?
          if [[ $haveLock = 1 ]]; then
            flock -u 723
            printf "Lock released\n"
          fi
          # Regardless, ensure the "server is intentionally stopped" file is present
          touch $AR_STOPPED_FILE
}

echo ""
case "$1" in
  start)
   start
   ;;
  start_readonly)
   start_readonly
   ;;
  stop)
   stop
   ;;
  restart)
   stop
   start
   ;;
  restart_readonly)
   stop
   start_readonly
   ;;
  *)
   echo $"Usage: $0 {start|stop|restart|start_readonly|restart_readonly}"
   RETVAL=1
esac


if [ $RETVAL = 0 ] ; then
    echo "**SUCCESS**"
else
    echo "FAILURE: '$0 $1' command failed, check logs ( exit code $RETVAL )"
fi

exit $RETVAL