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#!/usr/bin/perl
# Copyright (C) 2008-2011 Florian Forster
# Copyright (C) 2011 noris network AG
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; only version 2 of the License is applicable.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# Authors:
# Florian "octo" Forster <octo at collectd.org>
use strict;
use warnings;
use utf8;
use vars (qw($BASE_DIR));
BEGIN
{
if (defined $ENV{'SCRIPT_FILENAME'})
{
if ($ENV{'SCRIPT_FILENAME'} =~ m{^(/.+)/bin/[^/]+$})
{
$::BASE_DIR = $1;
unshift (@::INC, "$::BASE_DIR/lib");
}
}
}
use Carp (qw(cluck confess));
use CGI (':cgi');
use CGI::Carp ('fatalsToBrowser');
use HTML::Entities ('encode_entities');
use Data::Dumper;
use Collectd::Graph::Config (qw(gc_read_config gc_get_scalar));
use Collectd::Graph::TypeLoader (qw(tl_load_type));
use Collectd::Graph::Common (qw(get_files_from_directory get_all_hosts
get_timespan_selection get_selected_files get_host_selection
get_plugin_selection flush_files));
use Collectd::Graph::Type ();
our $TimeSpans =
{
Hour => 3600,
Day => 86400,
Week => 7 * 86400,
Month => 31 * 86400,
Year => 366 * 86400
};
my %Actions =
(
list_hosts => \&action_list_hosts,
show_selection => \&action_show_selection
);
sub base_dir
{
if (defined $::BASE_DIR)
{
return ($::BASE_DIR);
}
if (!defined ($ENV{'SCRIPT_FILENAME'}))
{
return;
}
if ($ENV{'SCRIPT_FILENAME'} =~ m{^(/.+)/bin/[^/]+$})
{
$::BASE_DIR = $1;
return ($::BASE_DIR);
}
return;
}
sub lib_dir
{
my $base = base_dir ();
if ($base)
{
return "$base/lib";
}
else
{
return "../lib";
}
}
sub sysconf_dir
{
my $base = base_dir ();
if ($base)
{
return "$base/etc";
}
else
{
return "../etc";
}
}
sub init
{
my $lib_dir = lib_dir ();
my $sysconf_dir = sysconf_dir ();
if (!grep { $lib_dir eq $_ } (@::INC))
{
unshift (@::INC, $lib_dir);
}
gc_read_config ("$sysconf_dir/collection.conf");
}
sub main
{
my $Debug = param ('debug') ? 1 : 0;
my $action = param ('action') || 'list_hosts';
if (!exists ($Actions{$action}))
{
print STDERR "No such action: $action\n";
return (1);
}
init ();
$Actions{$action}->();
return (1);
} # sub main
sub can_handle_xhtml
{
my %types = ();
if (!defined $ENV{'HTTP_ACCEPT'})
{
return;
}
for (split (',', $ENV{'HTTP_ACCEPT'}))
{
my $type = lc ($_);
my $q = 1.0;
if ($type =~ m#^([^;]+);q=([0-9\.]+)$#)
{
$type = $1;
$q = 0.0 + $2;
}
$types{$type} = $q;
}
if (!defined ($types{'application/xhtml+xml'}))
{
return;
}
elsif (!defined ($types{'text/html'}))
{
return (1);
}
elsif ($types{'application/xhtml+xml'} < $types{'text/html'})
{
return;
}
else
{
return (1);
}
} # can_handle_xhtml
my $html_started;
sub start_html
{
return if ($html_started);
my $end;
my $begin;
my $timespan;
$end = time ();
$timespan = get_timespan_selection ();
$begin = $end - $timespan;
if (can_handle_xhtml ())
{
print header (-Content_Type => 'application/xhtml+xml; charset=UTF-8');
print <<HTML;
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd"
xml:lang="en">
HTML
}
else
{
print header (-Content_Type => 'text/html; charset=UTF-8');
print <<HTML;
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
HTML
}
print <<HTML;
<head>
<title>collection.cgi, Version 3</title>
<link rel="icon" href="../share/shortcut-icon.png" type="image/png" />
<link rel="stylesheet" href="../share/style.css" type="text/css" />
<script type="text/javascript" src="../share/navigate.js"></script>
</head>
<body onload="nav_init ($begin, $end);">
HTML
$html_started = 1;
}
sub end_html
{
print <<HTML;
</body>
</html>
HTML
$html_started = 0;
}
sub contains_invalid_chars
{
my $str = shift;
for (split (m//, $str))
{
my $n = ord ($_);
# Whitespace is allowed.
if (($n >= 9) && ($n <= 13))
{
next;
}
elsif ($n < 32)
{
return (1);
}
}
return;
}
sub show_selector
{
my $timespan_selection = get_timespan_selection ();
my $host_selection = get_host_selection ();
my $plugin_selection = get_plugin_selection ();
print <<HTML;
<form action="${\script_name ()}" method="get">
<fieldset>
<legend>Data selection</legend>
<select name="hostname" multiple="multiple" size="15">
HTML
for (sort (keys %$host_selection))
{
next if contains_invalid_chars ($_);
my $host = encode_entities ($_);
my $selected = $host_selection->{$_}
? ' selected="selected"'
: '';
print qq# <option value="$host"$selected>$host</option>\n#;
}
print <<HTML;
</select>
<select name="plugin" multiple="multiple" size="15">
HTML
for (sort (keys %$plugin_selection))
{
next if contains_invalid_chars ($_);
my $plugin = encode_entities ($_);
my $selected = $plugin_selection->{$_}
? ' selected="selected"'
: '';
print qq# <option value="$plugin"$selected>$plugin</option>\n#;
}
print <<HTML;
</select>
<select name="timespan">
HTML
for (sort { $TimeSpans->{$a} <=> $TimeSpans->{$b} } (keys (%$TimeSpans)))
{
next if contains_invalid_chars ($_);
my $name = encode_entities ($_);
my $value = $TimeSpans->{$_};
my $selected = ($value == $timespan_selection)
? ' selected="selected"'
: '';
print qq# <option value="$value"$selected>$name</option>\n#;
}
print <<HTML;
</select>
<input type="hidden" name="action" value="show_selection" />
<input type="submit" name="ok_button" value="OK" />
</fieldset>
</form>
HTML
} # show_selector
sub action_list_hosts
{
start_html ();
show_selector ();
my @hosts = get_all_hosts ();
print " <ul>\n";
for (sort @hosts)
{
my $url = encode_entities (script_name () . "?action=show_selection;hostname=$_");
next if contains_invalid_chars ($_);
my $name = encode_entities ($_);
print qq# <li><a href="$url">$name</a></li>\n#;
}
print " </ul>\n";
end_html ();
} # action_list_hosts
=head1 MODULE LOADING
This script makes use of the various B<Collectd::Graph::Type::*> modules. If a
file like C<foo.rrd> is encountered it tries to load the
B<Collectd::Graph::Type::Foo> module and, if that fails, falls back to the
B<Collectd::Graph::Type> base class.
If you want to create a specialized graph for a certain type, you have to
create a new module which inherits from the B<Collectd::Graph::Type> base
class. A description of provided (and used) methods can be found in the inline
documentation of the B<Collectd::Graph::Type> module.
There are other, more specialized, "abstract" classes that possibly better fit
your need. Unfortunately they are not yet documented.
=over 4
=item B<Collectd::Graph::Type::GenericStacked>
Specialized class that groups files by their plugin instance and stacks them on
top of each other. Example types that inherit from this class are
B<Collectd::Graph::Type::Cpu> and B<Collectd::Graph::Type::Memory>.
=item B<Collectd::Graph::Type::GenericIO>
Specialized class for input/output graphs. This class can only handle files
with exactly two data sources, input and output. Example types that inherit
from this class are B<Collectd::Graph::Type::DiskOctets> and
B<Collectd::Graph::Type::IfOctets>.
=back
=cut
sub action_show_selection
{
start_html ();
show_selector ();
my $all_files;
my $timespan;
my $types = {};
my $id_counter = 0;
$all_files = get_selected_files ();
$timespan = get_timespan_selection ();
if (param ('debug'))
{
print "<pre>", Data::Dumper->Dump ([$all_files], ['all_files']), "</pre>\n";
}
# Send FLUSH command to the daemon if necessary and possible.
flush_files ($all_files,
begin => time () - $timespan,
end => time (),
addr => gc_get_scalar ('UnixSockAddr', undef),
interval => gc_get_scalar ('Interval', 10));
for (@$all_files)
{
my $file = $_;
my $type = ucfirst (lc ($file->{'type'}));
$type =~ s/[^A-Za-z0-9_]//g;
$type =~ s/_([A-Za-z0-9])/\U$1\E/g;
if (!defined ($types->{$type}))
{
$types->{$type} = tl_load_type ($file->{'type'});
if (!$types->{$type})
{
warn ("tl_load_type (" . $file->{'type'} . ") failed");
next;
}
}
$types->{$type}->addFiles ($file);
}
#print STDOUT Data::Dumper->Dump ([$types], ['types']);
print qq# <table>\n#;
for (sort (keys %$types))
{
my $type = $_;
if (!defined ($types->{$type}))
{
next;
}
my $graphs_num = $types->{$type}->getGraphsNum ();
for (my $i = 0; $i < $graphs_num; $i++)
{
my $args = $types->{$type}->getGraphArgs ($i);
my $url = encode_entities ("graph.cgi?$args;begin=-$timespan");
my $id = sprintf ("graph%04i", $id_counter++);
print " <tr>\n";
print " <td rowspan=\"$graphs_num\">$type</td>\n" if ($i == 0);
print <<EOF;
<td>
<div class="graph_canvas">
<div class="graph_float">
<img id="${id}" class="graph_image"
alt="A graph"
src="$url" />
<div class="controls zoom">
<div title="Earlier"
onclick="nav_move_earlier ('${id}');">←</div>
<div title="Zoom out"
onclick="nav_zoom_out ('${id}');">-</div>
<div title="Zoom in"
onclick="nav_zoom_in ('${id}');">+</div>
<div title="Later"
onclick="nav_move_later ('${id}');">→</div>
</div>
<div class="controls preset">
<div title="Show current hour"
onclick="nav_time_reset ('${id}', 3600);">H</div>
<div title="Show current day"
onclick="nav_time_reset ('${id}', 86400);">D</div>
<div title="Show current week"
onclick="nav_time_reset ('${id}', 7 * 86400);">W</div>
<div title="Show current month"
onclick="nav_time_reset ('${id}', 31 * 86400);">M</div>
<div title="Show current year"
onclick="nav_time_reset ('${id}', 366 * 86400);">Y</div>
<div title="Set all images to this timespan"
onclick="nav_set_reference ('${id}');">!</div>
</div>
</div>
</div>
</td>
EOF
# print qq# <td><img src="$url" /></td>\n#;
print " </tr>\n";
}
}
print " </table>\n";
end_html ();
}
main ();
=head1 SEE ALSO
L<Collectd::Graph::Type>
=head1 AUTHOR AND LICENSE
Copyright (c) 2008 by Florian Forster
E<lt>octoE<nbsp>atE<nbsp>verplant.orgE<gt>. Licensed under the terms of the GNU
General Public License, VersionE<nbsp>2 (GPLv2).
=cut
# vim: set shiftwidth=2 softtabstop=2 tabstop=8 :
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