From f49c04f7a2365b6bedf0828ca03dc4403bf12c8c Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Mon, 17 Jan 2011 13:28:36 +0100
Subject: [PATCH] workaround for memory-leak in debian squeeze librrds-perl
 (Bug #545519)

---
 upsgraph.pl | 71 ++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 56 insertions(+), 15 deletions(-)

diff --git a/upsgraph.pl b/upsgraph.pl
index 9887d0c..2783fcf 100755
--- a/upsgraph.pl
+++ b/upsgraph.pl
@@ -1,5 +1,9 @@
 #!/usr/bin/perl -w
 
+#Due to memory leak in Debian squeeze (Bug #545519)
+my $use_rrds = 0;
+my $rrd_result = 0;
+
 if ((@ARGV != 1) && (@ARGV != 2)) {
 	print STDERR "Syntax: ${0} configfile [uid]\n";
 	exit(1);
@@ -23,6 +27,43 @@ my $step = $UPSGRAPH::step;
 my $keep = $UPSGRAPH::keep;
 my $hosts = $UPSGRAPH::hosts;
 
+sub rrd_update(@) {
+	my @args = @_;
+
+	if ($use_rrds == 1) {
+		RRDs::update(@args);
+		$rrd_result = RRDs::error;
+	} else {
+		$rrd_result = system("rrdtool", "update", @args);
+	}
+}
+
+sub rrd_graph(@) {
+	my @args = @_;
+	my @rrd_out = ();
+
+	if ($use_rrds == 1) {
+		@rrd_out = RRDs::graph(@args);
+		$rrd_result = RRDs::error;
+	} else {
+		my $rrd_stdout;
+
+		open(RRDFD, '-|', 'rrdtool', 'graph', @args);
+		while(<RRDFD>) {
+			chomp;
+			$rrd_stdout = $_;
+		}
+		close(RRDFD);
+		$rrd_result = $?;
+		if ($rrd_result == 0) {
+			push @rrd_out, 0;
+			push @rrd_out, split(/x/, $rrd_stdout);
+		}
+	}
+
+	return @rrd_out;
+}
+
 sub rrdcreate(@) {
 	my $newrrd = shift;
 	my $field = shift;
@@ -318,10 +359,10 @@ while(1) {
 			if (!(defined($vars->{$var}->{'value'}))) {
 				$vars->{$var}->{'value'} = 'U';
 			}
-			RRDs::update("${rrdfile}.${var}", "N:" . $vars->{$var}->{'value'});
+			rrd_update("${rrdfile}.${var}", "N:" . $vars->{$var}->{'value'});
 		}
-		if (RRDs::error) {
-			print "Error while updating: " . RRDs::error . "\n";
+		if ($rrd_result) {
+			print "Error while updating: " . $rrd_result . "\n";
 		}
 
 		foreach my $var (@{$host->{'fields'}}) {
@@ -334,14 +375,14 @@ while(1) {
 			$mtime=(stat("${outdir}/${hostname}.${var}.png.work"))[9];
 
 			(my $averages, my $width, my $height) =
-				RRDs::graph("${outdir}/${hostname}.${var}.png.work",
+				rrd_graph("${outdir}/${hostname}.${var}.png.work",
 						"-w", "720", @graphdef);
 
 			pop @graphdef;
 			pop @graphdef;
 
-			if (RRDs::error) {
-				print "Error while graphing: " . RRDs::error . "\n";
+			if ($rrd_result) {
+				print "Error while graphing: " . $rrd_result . "\n";
 			} else {
 				my $newmtime=(stat("${outdir}/${hostname}.${var}.png.work"))[9];
 				if ((!defined($mtime)) || ($newmtime != $mtime)) {
@@ -370,11 +411,11 @@ while(1) {
 
 			$mtime=(stat("${outdir}/${hostname}.${var}.long.png.work"))[9];
 			($averages, $width, $height) =
-				RRDs::graph("${outdir}/${hostname}.${var}.long.png.work",
+				rrd_graph("${outdir}/${hostname}.${var}.long.png.work",
 						"-w", "1008", @graphdef);
 
-			if (RRDs::error) {
-				print "Error while graphing: " . RRDs::error . "\n";
+			if ($rrd_result) {
+				print "Error while graphing: " . $rrd_result . "\n";
 			} else {
 				my $newmtime=(stat("${outdir}/${hostname}.${var}.long.png.work"))[9];
 				if ((!defined($mtime)) || ($newmtime != $mtime)) {
@@ -387,11 +428,11 @@ while(1) {
 
 			$mtime=(stat("${outdir}/${hostname}.${var}.week.png.work"))[9];
 			($averages, $width, $height) =
-				RRDs::graph("${outdir}/${hostname}.${var}.week.png.work",
+				rrd_graph("${outdir}/${hostname}.${var}.week.png.work",
 						"-w", "1008", "-e", "now", "-s", "end-1w", @graphdef);
 
-			if (RRDs::error) {
-				print "Error while graphing: " . RRDs::error . "\n";
+			if ($rrd_result) {
+				print "Error while graphing: " . $rrd_result . "\n";
 			} else {
 				my $newmtime=(stat("${outdir}/${hostname}.${var}.week.png.work"))[9];
 				if ((!defined($mtime)) || ($newmtime != $mtime)) {
@@ -404,11 +445,11 @@ while(1) {
 
 			$mtime=(stat("${outdir}/${hostname}.${var}.year.png.work"))[9];
 			($averages, $width, $height) =
-				RRDs::graph("${outdir}/${hostname}.${var}.year.png.work",
+				rrd_graph("${outdir}/${hostname}.${var}.year.png.work",
 						"-w", "1008", "-e", "now", "-s", "end-1y", @graphdef);
 
-			if (RRDs::error) {
-				print "Error while graphing: " . RRDs::error . "\n";
+			if ($rrd_result) {
+				print "Error while graphing: " . $rrd_result . "\n";
 			} else {
 				my $newmtime=(stat("${outdir}/${hostname}.${var}.year.png.work"))[9];
 				if ((!defined($mtime)) || ($newmtime != $mtime)) {
-- 
2.39.5