#!/bin/bash

# cron script to monitor temporary staging dir and move .plot files into farm dir where is enough free space

# temp dirs separated by space
temp_dirs=(/mnt/staging)
# farm dirs separated by space
farm_dirs=(/mnt/farm-03 /mnt/farm-02 /mnt/farm-01)

for dir in "${temp_dirs[@]}"; do

 plots=($(ls -d $dir/*.plot))

 if [ -n "$plots" ]; then
  for plot_path in "${plots[@]}"; do
   plot_file_name="$(basename $plot_path)"
   plot_size=($(ls -l $plot_path | awk '{print $5}'))

   echo "Plot file: $plot_path Plot size: $plot_size"

   for farm_dir in "${farm_dirs[@]}"; do
    space=`df -B1 | grep "$farm_dir" | awk '{print $4}'`
    echo "Farm dir: $farm_dir Space Available: $space"

    if (( space >= plot_size )); then
     echo "Copy $plot_path to $farm_dir/$plot_file_name"
     rsync -aP --remove-source-files $plot_path $farm_dir/$plot_file_name
     echo "Done!"
     break
    else
     echo "Not enough space on $farm_dir ($space) needed $plot_size"
    fi
   done
  done
 fi
done