TSTART=`date +%s`
LDATE=`date "+%Y%m%d%H%M"`
DBUSER='bkpuser'
DBPASS='SANITIZED'
BKPDIR='/backup/accounting-bkp'
LOGDIR='/backup/accounting-bkp-logs'
BKPLOG="${LOGDIR}/accounting_backup.log"
LOCK_FILE="/tmp/accounting_backup.lock"
STATUSFILE="${LOGDIR}/accounting_backup.status"

RSYNC_BIN="/usr/bin/rsync"
RSYNC_OPTIONS="-azq --numeric-ids --timeout=172800 --delete-before --delete"
REMOTESERVER=backups.gammanetworking.com
DESTINATION="${REMOTESERVER}::`hostname`/"

#Function to write in the log file
#what is passed in first param.
write_to_log() {
  TIMESTAMP=`date "+%b %d %T"`
  echo -e "$TIMESTAMP $1" >> $BKPLOG
}

#Try to get lock file
exec 8>$LOCK_FILE;
flock --nonblock --exclusive 8
# If we were able to get exclusive lock
if [ $? -eq 0 ]; then {
  # Initialize the backup file
  > $BKPLOG
  write_to_log "[INFO] Dump of workspace_accounting database started"
  # Start the dump of the database, redirect any error messages to the
  # log file
  /bin/mysqldump -S /var/lib/mysql/mysql.sock --user=${DBUSER} --password=${DBPASS} --databases workspace_accounting --single-transaction --add-drop-database > $BKPDIR/workspace_accounting.sql 2>${BKPLOG}
  # Was the backup successful?
  if [ $? -eq 0 ]; then {
    #Yes, backup was successful
    write_to_log "[INFO] Dump of workspace_accounting database completed successfully"
    #Ship this backup over to the backup server
    write_to_log "[INFO] Shipping the backup over to ${REMOTESERVER}..."
    ${RSYNC_BIN} ${RSYNC_OPTIONS} ${BKPDIR} ${DESTINATION} >> $BKPLOG 2>&1
    if [ $? -eq 0 ] ; then
      write_to_log "[INFO] Shipment completed successfully"
    else
      write_to_log "[ERROR] Shipment failed, please check the log files!"
    fi
  } else {
    # Reaching here, the backup failed for some reason
    write_to_log "[ERROR] Dump failed, please check the log files"
    exit 1;
  }
  fi
  #All steps have completed successfully!
  write_to_log "[INFO] All backup steps have completed successfully!"
  exit 0;
} else {
  #Failed to get the exclusive lock
  write_to_log "Can't get exclusive lock"
  exit 1;
}
fi