contrib/add_rra.sh

   1 #!/bin/bash
   2
   3 INPUT=$1
   4 OUTPUT=$2
   5
   6 if [ -z "$INPUT" -o -z "$OUTPUT" ]
   7 then
   8         cat <<USAGE
   9 Usage: $0 <input> <output>
  10 USAGE
  11         exit 1
  12 fi
  13
  14 if [ ! -e "$INPUT" ]
  15 then
  16         echo "No such file: $INPUT"
  17         exit 1
  18 fi
  19
  20 if [ -e "$OUTPUT" ]
  21 then
  22         echo "File exists: $OUTPUT"
  23         exit 1
  24 fi
  25
  26 NUM_DS=0
  27 rrdtool dump "$INPUT" | while read LINE
  28 do
  29         echo "$LINE"
  30
  31         if [ "$LINE" = "<ds>" ]
  32         then
  33                 NUM_DS=$(($NUM_DS + 1))
  34         fi
  35
  36         if [ "$LINE" = "<!-- Round Robin Archives -->" ]
  37         then
  38                 for CF in MIN MAX AVERAGE
  39                 do
  40                         cat <<RRA
  41         <rra>
  42                 <cf> $CF </cf>
  43                 <pdp_per_row> 1 </pdp_per_row>
  44                 <xff> 0.0000000000e+00 </xff>
  45
  46                 <cdp_prep>
  47 RRA
  48                         for ((i=0; i < $NUM_DS; i++))
  49                         do
  50                                 echo "                  <ds><value> NaN </value>  <unknown_datapoints> 1 </unknown_datapoints></ds>"
  51                         done
  52                         echo "          </cdp_prep>"
  53                         echo "          <database>"
  54
  55                         DS_VALUES=`for ((i=0; i < $NUM_DS; i++)); do echo -n "<v> NaN </v>"; done`
  56                         for ((i=0; i < 2200; i++))
  57                         do
  58                                 echo "                  <!-- $i --> <row>$DS_VALUES</row>"
  59                         done
  60                         echo "          </database>"
  61                         echo "  </rra>"
  62                 done
  63         fi
  64 done >"$OUTPUT.xml"
  65
  66 rrdtool restore "$OUTPUT.xml" "$OUTPUT" -r >/dev/null
  67 rm -f "$OUTPUT.xml"