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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
<?php
# Collectd Default type
class Type_Default {
var $datadir;
var $rrdtool;
var $cache;
var $args;
var $seconds;
var $data_sources = array('value');
var $order;
var $ds_names;
var $colors;
var $rrd_title;
var $rrd_vertical;
var $rrd_format;
var $scale;
var $width;
var $heigth;
var $files;
var $tinstances;
var $identifiers;
function __construct($config) {
$this->datadir = $config['datadir'];
$this->rrdtool = $config['rrdtool'];
$this->cache = $config['cache'];
$this->parse_get();
$this->rrd_files();
$this->identifiers = $this->file2identifier($this->files);
}
function generate_colors() {
$base = array( array(255, 0, 0),
array( 0, 255, 0),
array( 0, 0, 255),
array(255, 120, 0),
array(255, 0, 120),
array( 0, 255, 120),
array(120, 255, 0),
array(120, 0, 255),
array( 0, 120, 255));
$this->colors = array();
$n = 0;
$p = 0;
foreach($base as $b) {
$n = $p;
for($i = 100; $i >= 20; $i -= 30) {
$this->colors[$n] = sprintf('%02x%02x%02x', $b[0] * $i / 100, $b[1] * $i / 100, $b[2] * $i / 100);
$n += count($base);
}
$p++;
}
}
# parse $_GET values
function parse_get() {
$this->args = array(
'host' => $_GET['h'],
'plugin' => $_GET['p'],
'pinstance' => $_GET['pi'],
'type' => $_GET['t'],
'tinstance' => $_GET['ti'],
);
$this->seconds = $_GET['s'];
}
function validate_color($color) {
if (!preg_match('/^[0-9a-f]{6}$/', $color))
return '000000';
else
return $color;
}
function get_faded_color($fgc, $bgc='ffffff', $percent=0.25) {
$fgc = $this->validate_color($fgc);
if (!is_numeric($percent))
$percent=0.25;
$rgb = array('r', 'g', 'b');
$fg[r] = hexdec(substr($fgc,0,2));
$fg[g] = hexdec(substr($fgc,2,2));
$fg[b] = hexdec(substr($fgc,4,2));
$bg[r] = hexdec(substr($bgc,0,2));
$bg[g] = hexdec(substr($bgc,2,2));
$bg[b] = hexdec(substr($bgc,4,2));
foreach ($rgb as $pri) {
$c[$pri] = dechex(round($percent * $fg[$pri]) + ((1.0 - $percent) * $bg[$pri]));
if ($c[$pri] == '0')
$c[$pri] = '00';
}
return $c[r].$c[g].$c[b];
}
function rrd_files() {
$files = $this->get_filenames();
foreach($files as $filename) {
$basename=basename($filename,'.rrd');
$instance=substr($basename,strpos($basename,'-')+1);
$this->tinstances[] = $instance;
$this->files[$instance] = $filename;
}
sort($this->tinstances);
ksort($this->files);
}
function get_filenames() {
$identifier = sprintf('%s/%s%s%s/%s%s%s', $this->args['host'],
$this->args['plugin'], strlen($this->args['pinstance']) ? '-' : '', $this->args['pinstance'],
$this->args['type'], strlen($this->args['tinstance']) ? '-' : '', $this->args['tinstance']);
$wildcard = strlen($this->args['tinstance']) ? '.' : '[-.]*';
$files = glob($this->datadir .'/'. $identifier . $wildcard . 'rrd');
return $files;
}
function file2identifier($files) {
foreach($files as $key => $file) {
if (is_file($file)) {
$files[$key] = basename($files[$key], '.rrd');
}
}
return $files;
}
function rrd_graph($debug=false) {
$graphdata = $this->rrd_gen_graph();
if(!$debug) {
# caching
if (is_numeric($this->cache) && $this->cache > 0)
header("Expires: " . date(DATE_RFC822,strtotime($this->cache." seconds")));
header("content-type: image/png");
$graphdata = implode(' ', $graphdata);
echo `$graphdata`;
} else {
print '<pre>';
print_r($graphdata);
print '</pre>';
}
}
function rrd_options() {
$rrdgraph[] = $this->rrdtool;
$rrdgraph[] = 'graph - -a PNG';
$rrdgraph[] = sprintf('-w %d', is_numeric($this->width) ? $this->width : 400);
$rrdgraph[] = sprintf('-h %d', is_numeric($this->heigth) ? $this->heigth : 175);
$rrdgraph[] = '-l 0';
$rrdgraph[] = sprintf('-t "%s on %s"', $this->rrd_title, $this->args['host']);
$rrdgraph[] = sprintf('-v "%s"', $this->rrd_vertical);
$rrdgraph[] = sprintf('-s -%d', is_numeric($this->seconds) ? $this->seconds : 86400);
return $rrdgraph;
}
function rrd_get_sources() {
# is the source spread over multiple files?
if (is_array($this->files) && count($this->files)>1) {
# and must it be ordered?
if (is_array($this->order)) {
$this->tinstances = array_intersect($this->order, $this->tinstances);
}
# use tinstances as sources
if(is_array($this->data_sources) && count($this->data_sources)>1) {
$sources = array();
foreach($this->tinstances as $f) {
foreach($this->data_sources as $s) {
$sources[] = $f . '-' . $s;
}
}
}
else {
$sources = $this->tinstances;
}
$sources = str_replace('.', '_', $sources);
}
# or one file with multiple data_sources
else {
# use data_sources as sources
$sources = $this->data_sources;
}
$this->fill_ds_names($sources);
return $sources;
}
function fill_ds_names($sources) {
$max = 0;
foreach ($sources as $source) {
if(strlen($source) > $max) {
$max = strlen($source);
}
}
if($max > 0) {
$fmt = sprintf("%%-%ds", $max);
foreach ($sources as $source) {
if(!isset($this->ds_names[$source])) {
$this->ds_names[$source] = sprintf($fmt, $source);
}
}
}
}
function rrd_gen_graph() {
$rrdgraph = $this->rrd_options();
$sources = $this->rrd_get_sources();
$i=0;
foreach ($this->tinstances as $tinstance) {
foreach ($this->data_sources as $ds) {
$rrdgraph[] = sprintf('DEF:min_%s="%s":%s:MIN', crc32hex($sources[$i]), $this->files[$tinstance], $ds);
$rrdgraph[] = sprintf('DEF:avg_%s="%s":%s:AVERAGE', crc32hex($sources[$i]), $this->files[$tinstance], $ds);
$rrdgraph[] = sprintf('DEF:max_%s="%s":%s:MAX', crc32hex($sources[$i]), $this->files[$tinstance], $ds);
$i++;
}
}
if(count($this->files)<=1) {
$c = 0;
foreach ($sources as $source) {
$color = is_array($this->colors) ? (isset($this->colors[$source])?$this->colors[$source]:$this->colors[$c++]): $this->colors;
$rrdgraph[] = sprintf('AREA:max_%s#%s', crc32hex($source), $this->get_faded_color($color));
$rrdgraph[] = sprintf('AREA:min_%s#%s', crc32hex($source), 'ffffff');
break; # only 1 area to draw
}
}
$c = 0;
foreach ($sources as $source) {
$dsname = $this->ds_names[$source] != '' ? $this->ds_names[$source] : $source;
$color = is_array($this->colors) ? (isset($this->colors[$source])?$this->colors[$source]:$this->colors[$c++]): $this->colors;
$rrdgraph[] = sprintf('LINE1:avg_%s#%s:\'%s\'', crc32hex($source), $this->validate_color($color), $dsname);
$rrdgraph[] = sprintf('GPRINT:min_%s:MIN:\'%s Min,\'', crc32hex($source), $this->rrd_format);
$rrdgraph[] = sprintf('GPRINT:avg_%s:AVERAGE:\'%s Avg,\'', crc32hex($source), $this->rrd_format);
$rrdgraph[] = sprintf('GPRINT:max_%s:MAX:\'%s Max,\'', crc32hex($source), $this->rrd_format);
$rrdgraph[] = sprintf('GPRINT:avg_%s:LAST:\'%s Last\\l\'', crc32hex($source), $this->rrd_format);
}
return $rrdgraph;
}
}
?>
|
