From 75687920dd15af4524e68b9b43d687dff74b45c9 Mon Sep 17 00:00:00 2001
From: octo <octo>
Date: Sat, 22 Apr 2006 09:38:55 +0000
Subject: [PATCH] Added `contrib/add_rra.sh' which allows to add an very
 detailed RRA to old RRD files.

---
 contrib/add_rra.sh | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100755 contrib/add_rra.sh

diff --git a/contrib/add_rra.sh b/contrib/add_rra.sh
new file mode 100755
index 00000000..c9306b05
--- /dev/null
+++ b/contrib/add_rra.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+INPUT=$1
+OUTPUT=$2
+
+if [ -z "$INPUT" -o -z "$OUTPUT" ]
+then
+	cat <<USAGE
+Usage: $0 <input> <output>
+USAGE
+	exit 1
+fi
+
+if [ ! -e "$INPUT" ]
+then
+	echo "No such file: $INPUT"
+	exit 1
+fi
+
+if [ -e "$OUTPUT" ]
+then
+	echo "File exists: $OUTPUT"
+	exit 1
+fi
+
+NUM_DS=0
+rrdtool dump "$INPUT" | while read LINE
+do
+	echo "$LINE"
+
+	if [ "$LINE" = "<ds>" ]
+	then
+		NUM_DS=$(($NUM_DS + 1))
+	fi
+	
+	if [ "$LINE" = "<!-- Round Robin Archives -->" ]
+	then
+		for CF in MIN MAX AVERAGE
+		do
+			cat <<RRA
+	<rra>
+		<cf> $CF </cf>
+		<pdp_per_row> 1 </pdp_per_row>
+		<xff> 0.0000000000e+00 </xff>
+
+		<cdp_prep>
+RRA
+			for ((i=0; i < $NUM_DS; i++))
+			do
+				echo "			<ds><value> NaN </value>  <unknown_datapoints> 1 </unknown_datapoints></ds>"
+			done
+			echo "		</cdp_prep>"
+			echo "		<database>"
+
+			DS_VALUES=`for ((i=0; i < $NUM_DS; i++)); do echo -n "<v> NaN </v>"; done`
+			for ((i=0; i < 2200; i++))
+			do
+				echo "			<!-- $i --> <row>$DS_VALUES</row>"
+			done
+			echo "		</database>"
+			echo "	</rra>"
+		done
+	fi
+done >"$OUTPUT.xml"
+
+rrdtool restore "$OUTPUT.xml" "$OUTPUT" -r >/dev/null
+rm -f "$OUTPUT.xml"
-- 
2.11.0