[rrd-users] RRDTool Cgi Problem
Steven Williams
Steven.Williams at computershare.com.au
Mon Dec 3 06:45:46 MET 2001
Hi,
Copied below is a cgi I wrote to graph multiple data sources from multiple
rrd's
This works great, except I am having troubles multiplying the data by 8
using CDEF for converting bytes to bits for network traffic.
Could someone have a look at this and help me out please?
Thanks
#!/usr/bin/perl -w -I /usr/rrdtool/lib/perl/
#
use CGI;
use RRDs;
########################
#HTML Variables
########################
#The page title and heading
$titleHTML = "Equant ICN HSRP Sites";
#Page description, please write the description in HTML
$descriptionHTML =
"
<h3><p>
ICN HSRP Maximum traffic throughout comparison to indicate routing changes
from primary sites to secondary sites.
Still under development. Dont use data as it may be incorrect.
</h3>
";
#footer, in html
$footer =
"
<A
HREF=\"http://commsweb.mel.computershare.com.au\">www.commsweb.mel.computers
hare.com.au</A>
";
########################
#Global Config Variables.
########################
#name of the prefix for all the graph files
my $prefix = "hsrp";
#Path for graph files
my $graphPath = ".\\equant\\ <\\equant\\> ";
#path containing the rrd files
my $rrdPath = ".\\equant\\ <\\equant\\> ";
#How often do you want to update the graph? In seconds
my $updateInterval = 5 * 60;
#do you want to create the avg graph, an average of the ds0 and ds1
#$createAvg = 0;
#The files that you want to display
#implemented as a hash of hashes
#in the format
# "Title of the graph" => {
# "File1.rrd"
# => "Key for DS0 |Key for DS1 |.....",
# "File2.rrd"
# => "Key for DS0 |.... <--NOTE the last one does not
have a coma
# }, <--NOTE the last one does not have a coma
#To skip a DS simply place an '&&' like so => "&&|Key for DS1|&&|Key for
DS3"
%graphTable = (
#-----------------------------------------
# "VPN Testing - Reponse Times" => {
# "vpntest_equantping.rrd"
# => "&&|Minimum Response Times to Chicago CHILCORE1
via EQuant",
# "vpntest_internetping.rrd"
# => "Maximum Response Times to Chicago Internet
Router via the WWW |Minimum Response Times to Chicago Internet Router via
the WWW"
},
"VPN TEST via Internet to Chicago Internet Router" => {
"vpntest_internetping.rrd"
=> "Maximum Round Trip Time in ms |Minimum Round Trip Time
in ms"
},
"Melbourne HSRP Sites Traffic Comparison (Bps)" => {
"pmel315_wanbps.rrd"
=>"RX Bps|Tx Bps",
}
#------------------------------------------
);
########################
########################
#create new CGI instance
my $query = new CGI;
#what is the url to which the files are stored
my @pathParts = split (/\\/,$graphPath);
shift @pathParts;
my $urlGraph = "http://commsweb.mel.computershare.com.au/
<http://commsweb.mel.computershare.com.au/> ";
foreach $n (@pathParts) {
$urlGraph .= "$n/";
}
#the scripts url
my $url = $query->url;
#check if its a derivation
if (defined $query->param('full') ) {
$deriv = 1;
}
else {
$deriv =0;
}
#Makes the graphs
my $graphCount=0;
if ($deriv) {
my $target = $query->param('full');
foreach $n ('Yearly','Monthly','Weekly','Daily','Four Hourly') {
@createOutput = &create_graph($graphCount,"$n:
$target",$n,%{$graphTable{$target}});
$graphOut[$graphCount][0] = shift @createOutput;
$graphOut[$graphCount][1] = shift @createOutput;
$graphCount++;
}
}
else {
@graphOut = ();
foreach $graph ( keys %graphTable) {
$id = $graphCount;
@createOutput =
&create_graph($id,$graph,'Daily',%{$graphTable{$graph}});
$graphOut[$graphCount][0] = shift @createOutput;
$graphOut[$graphCount][1] = shift @createOutput;
$graphOut[$graphCount][2] = shift @createOutput;
$graphCount++;
}
}
#
#The HTML bit
#
print $query->header;
print $query->start_html(-title=>"$titleHTML",
-BGCOLOR=>'white');
#Header info
if ($deriv) {
my $target = $query->param('full');
print "<h1>$target</h1>";
}
else {
print "<h1>$titleHTML</h1>";
print "$descriptionHTML";
}
#prints the time
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) =localtime(time);
print "<HR>";
print "The statistics where last updated: ";
print $query->b(scalar(localtime(time)));
print "<HR>\n";
#testing the times
#foreach $tt (keys %graphTable) {
# foreach $yy (keys %{$graphTable{$tt}}) {
# my $last = RRDs::last("$rrdPath$yy");
# print "$tt=> $yy => $last \n";
# print "<p>";
# }
# print "<p>";
#}
#Display the graphs
$graphCount--;
print "<table width=100\%>";
while ($graphCount >= 0) {
print "<tr><td>";
#If there is an error
if ($graphOut[$graphCount][1] ne "") {
print "Error: $graphOut[$graphCount][1]";
print $query->p;
}
$deriv or print "<a
href=\"$url?iid=$graphCount&full=$graphOut[$graphCount][2]\"><img
src=\"$urlGraph$graphOut[$graphCount][0]\"/></a>";
!$deriv or print "<IMG ALIGN=\"LEFT\"
SRC=\"$urlGraph$graphOut[$graphCount][0]\">";
print $query->p;
print "</td>\n";
$graphCount--;
#Show each graph
if ($graphCount >= 0 && !(defined $query->param('full')) ) {
print "<td>";
#If there is an error
if ($graphOut[$graphCount][1] ne "") {
print "Error: $graphOut[$graphCount][1]";
print $query->p;
}
$deriv or print "<a
href=\"$url?iid=$graphCount&full=$graphOut[$graphCount][2]\"><img
src=\"$urlGraph$graphOut[$graphCount][0]\"/></a>";
!$deriv or print "<IMG ALIGN=\"LEFT\"
SRC=\"$urlGraph$graphOut[$graphCount][0]\">";
print $query->p;
print "</td></tr>\n";
$graphCount--;
}
else {
print "</tr>\n";
}
}
print "</table>";
#Footer
print "<hr>\n";
print $footer;
## End
print $query->end_html;
#####################
#Creates the graph given
####################
sub create_graph {
my($id,$title,$period,%instances) = @_;
my $start;
#Establishes the sampling period
if ($period eq 'Daily') {
$start = 33.33*60*60;
$start = "-$start";
} elsif ($period eq 'Weekly') {
$start = 7*24*60*60;
$start = "-$start";
} elsif ($period eq 'Monthly') {
$start = 30*7*24*60*60;
$start = "-$start";
} elsif ($period eq 'Yearly') {
$start = 52*7*24*60*60;
$start = "-$start";
} elsif ($period eq 'Four Hourly') {
$start = 4*60*60;
$start = "-$start";
}
else {
$start = 24*60*60;
$start = "-$start";
}
#establish the initial colour
$colourNum = -1;
# $colourNum = int $colourNum;
#Check if it is a index page or a detailed page
if (defined $query->param('iid')) {
$iid = $query->param('iid');
#picture name
$pic = "$prefix$iid.$id.gif";
$width = 800;
$height = 400;
}
else {
#picture name
$pic = "$prefix$id.gif";
$width = 300;
$height = 100;
}
#establishes the arguments
my @args = ();
push (@args, "$graphPath\\$pic");
push (@args, "-s $start");
push (@args, "--title=\"$title\"");
#Do the defs and LINEs
foreach $rrdFile ( keys %instances ) {
$varName = rand 99999;
$varName = int $varName;
push (@args, "-w $width");
push (@args, "-h $height");
#draw each line
@keys = split (/\|/,($instances{$rrdFile}));
$DS = 0;
foreach $keyName (@keys) {
# if ($DS = 0) {
# $ds0Name = $keyName;
# }
# if ($DS = 1) {
# $ds1Name = $keyName;
# }
if (!($keyName =~ /.*\&\&.*/)) {
$colourNum++;
if ($colourNum > 11) {
$colourNum = 0;
}
$colour = &get_colour ($colourNum);
push (@args,
"DEF:a$varName=$rrdPath$rrdFile:ds$DS:MAX");
push (@args, "CDEF:$other=$varName,8,*");
push (@args, "LINE1:a$varName#$colour:$keyName");
push (@args, "GPRINT:$other:MAX: max\\:\%3.0lf");
push (@args, "GPRINT:$other:MIN:min\\:\%3.0lf");
push (@args,
"GPRINT:$other:AVERAGE:avg\\:\%3.0lf\\l");
$DS++;
$varName++;
}
}
#create the average graph
if ($createAvg) {
$colourNum++;
if ($colourNum > 11) {
$colourNum = 0;
}
$colour = &get_colour ($colourNum);
$j = $varName;
push (@args,
"DEF:a$varName=$rrdPath$rrdFile:ds0:Max");
$varName++;
push (@args,
"DEF:a$varName=$rrdPath$rrdFile:ds1:Max");
$i = $varName;
$varName++;
push (@args, "CDEF:c$varName=0.5,a$j,a$i,+,*");
push (@args, "LINE1:c$varName#$colour:Average");
}
}
#Fire up RRD
my ($results, $rrdx, $rrdy) = RRDs::graph(@args);
my $e = RRDs::error();
return ($pic,$e,$title);
}
###########
#given a number returns a colour in Hex RGB.
###########
sub get_colour {
my($number) = @_;
if ($number == 0) {
return "0000FF";
}
elsif ($number == 1) {
return "FF0000";
}
elsif ($number == 2) {
return "00FF00";
}
elsif ($number == 3) {
return "555555";
}
elsif ($number == 4) {
return "D753C7";
}
elsif ($number == 5) {
return "5B8FA4";
}
elsif ($number == 6) {
return "D7FF30";
}
elsif ($number == 7) {
return "FF5050";
}
elsif ($number == 8) {
return "30AF00";
}
elsif ($number == 9) {
return "802080";
}
elsif ($number == 10) {
return "F20080";
}
elsif ($number == 11) {
return "0F20AE";
}
}
Steven Williams
Communications Support Engineer
PH +61 3 9235 5651
FAX +61 3 9473 2441
Computershare Technology Services
18-62 Trennery Cres Abbotsford
Victoria 3067 Australia
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