/usr/share/perl5/CGI/Application/Plugin/DBIProfile/Graph/HTML.pm is in libcgi-application-plugin-dbiprofile-perl 0.07-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | package CGI::Application::Plugin::DBIProfile::Graph::HTML;
use strict;
use HTML::Template;
use List::Util qw(max);
# setup colors, generated by
# http://wellstyled.com/tools/colorscheme/index-en.html
our @BARS = qw( 2856E0 8DA6F0 C5D1F7 445896 222C4B 687AB0 9FA9C8
FFAB2E FFD596 FFEACB AA854D 554227 BFA071 DFCDB1 );
sub build_graph
{
my $proto = shift;
my $class = ref($proto) || $proto;
my %opts = @_;
#my $self = { };
#bless $self, $class;
$opts{data} ||= [];
our @BARS;
my @bars = map { "#$_" } @BARS;
my $stmt_count = @{$opts{data}};
my $title = "Top $stmt_count statements"; # by total runtime
my $tag = 1;
my $tags = [ map { $tag++ } @{$opts{data}} ];
my %defs = (
tags => $tags,
data => [],
title => $title,
ylabel => '',
barlength => 150,
barwidth => 10,
barcolors => \@bars,
);
# merge options with defaults.
%opts = (%defs, map { $_ => $opts{$_} }
grep { defined $opts{$_} }
keys %opts );
# rotate ylabel
$opts{ylabel} = join ' <br> ', split(//, $opts{ylabel});
# get max value from dataset (XXX doesn't support negative values)
my $maxval = max(@{$opts{data}}) || 1;
# ratio of barlenth to values
my $ratio = $opts{barlength} / $maxval;
# all bar lengths
my @barlength = map { $_ || 1 }
map { sprintf('%0.0f', ($_ * $ratio)) }
@{$opts{data}};
# build data for HTML::Template
my $cols = [];
for (my $i=0; $i<@barlength; $i++) {
push(@$cols, {
tag => $opts{tags}->[$i],
value => $opts{data}->[$i],
barlength => $barlength[$i],
barwidth => $opts{barwidth},
barcolor => $opts{barcolors}[ $i % scalar @{$opts{barcolors}} ],
});
}
my $TEMPLATE = <<TMPL;
<table cellpadding="3">
<tr>
<td bgcolor="black">
<table cellspacing="0" cellpadding="2" border="0" bgcolor="white" width="100%" width="100%">
<tr><td><span class="htg_title"><tmpl_var title></span></td></tr>
</table>
<table cellspacing="0" cellpadding="2" border="0" bgcolor="white" width="100%">
<tr>
<td valign="middle" align="center"><tmpl_var ylabel></td>
<tmpl_loop cols>
<td valign="bottom" align="center">
<font size="-2"><tmpl_var value></font><br>
<table cellspacing="0" cellpadding="0" border="0" bgcolor="<tmpl_var barcolor>">
<tr><td width="<tmpl_var barwidth>" height="<tmpl_var barlength>" align="center" valign="bottom"></td></tr>
</table>
</td>
</tmpl_loop>
</tr>
<tr>
<td></td>
<tmpl_loop cols>
<td valign="bottom" align="center">
<font size="-2"><tmpl_var tag></font>
</td>
</tmpl_loop>
</tr>
</table>
</td>
</table>
TMPL
my $t = HTML::Template->new(scalarref => \$TEMPLATE,
loop_context_vars => 1,
die_on_bad_params => 0, );
$t->param('title' => $opts{title});
$t->param('ylabel' => $opts{ylabel});
$t->param('cols' => $cols);
return $t->output;
}
1;
__END__
=head1 NAME
CGI::Application::Plugin::DBIProfile::Graph::HTML - VERY basic pure html vertical bar graphing for CAP:DBIProfile.
=head1 SYNOPSIS
# in httpd.conf
SetVar CAP_DBIPROFILE_GRAPHMODULE CGI::Application::Plugin::DBIProfile::Graph::HTML
PerlSetVar CAP_DBIPROFILE_GRAPHMODULE CGI::Application::Plugin::DBIProfile::Graph::HTML
=head1 DESCRIPTION
This module is provided as a basic implementation of graphing for CAP:DBIProfile. It can be used as an example to develop other, more sophisticated, graphing solutions.
=head1 GRAPH PLUGIN DEVELOPMENT
The graphing plugin must have a method called "build_graph", which must accept options as a hash.
It should return a scalar or scalar ref holding the HTML output needed to generate your graph.
The following options will be passed to the "build_graph" method:
=over
=item self
The cgiapp object.
=item mode_param
$self->mode_param - the runmode variable used to determine runmode (useful for creating links back to ourselves).
=item title
A textual title for your graph. You don't have to use this, but is there if you want it.
=item ylabel
Label for values we're graphing. Either "Count" or "Seconds".
=item data
An array of the datapoints to graph.
=item tags
Labels for each datapoint which match the labels that will be used on the sql statement list (1 to however many items there are).
=back
The easiest graphs to implement are fully inline - ie. it doesn't need to make any external calls (no <image> or <embed> tags and such). CGI::Application::Plugin::DBIProfile::Graph::HTML is an example of this. Other possible candidates are Plotr and Open Flash Chart (using js interface to populate data).
Another inline solution is to use the <img src="data:uri"> scheme. An example of this can be found in L<CGI::Application::Plugin::DBIProfile::Graph::GDGraphInline>. Please note, this isn't supported under MSIE.
In order to generate a graph that isn't inline, you'll need to pass the data to be graphed with your call to the external object. For example, if you want to use GDGraph, you could create a separate cgi script that returns graphs based on params passed to it, and return an approapriate image tag to from your graphing module. For example:
<img src="/cgi-bin/graph.pl?data=20,14,42&tags=1,2,3">
Another way, would be to add a runmode in a CGI::Application "init" hook, and pass that runmode in a link back to the same script, and include your graph module in our script with a use statement. An example of this can be found in L<CGI::Application::Plugin::DBIProfile::Graph::SVGTT>.
=head1 REQUIREMENTS
L<HTML::Template>
=head1 SEE ALSO
L<CGI::Application::Plugin::DBIProfile>
L<CGI::Application::Plugin::DBIProfile::Graph::GDGraphInline>
L<CGI::Application::Plugin::DBIProfile::Graph::SVGTT>
=head1 AUTHOR
Joshua I Miller, L<unrtst@cpan.org>
=head1 COPYRIGHT & LICENSE
Copyright 2007 Joshua Miller, all rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
=cut
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