initial import of cgp

Collectd Graph Panel is a frontend for Collectd written in PHP.

The goal of CGP is to provide an easy-to-use frontend for Collectd,
starting with page that shows an overview of all the hosts you are
managing with Collectd.

In this initial import there is support for the plugins that are default
enabled in Collectd. The supported plugins are located in the plugin
directory.

1 files changed, 127 insertions, 0 deletions

diff --git a/type/Default.class.php b/type/Default.class.php
new file mode 100644
index 0000000..8a5dd72
--- /dev/null
+++ b/type/Default.class.php
@@ -0,0 +1,127 @@
+<?php
+
+# Collectd Default type
+
+class Type_Default {
+        var $datadir;
+        var $args;
+        var $data_sources;
+        var $order;
+        var $ds_names;
+        var $colors;
+        var $rrd_title;
+        var $rrd_vertical;
+        var $rrd_format;
+        var $scale;
+        var $width;
+        var $heigth;
+
+        function validate_color($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].$c[b];
+        }
+
+        function get_filename($tinstance=NULL) {
+                if (!is_array($this->args['tinstance']) && $tinstance == NULL)
+                        $tinstance = $this->args['tinstance'];
+                        
+                $search = array('{host}', '{plugin}', '{pinstance}', '{type}', '{tinstance}');
+                $replace = array($this->args['host'], $this->args['plugin'], $this->args['pinstance'], $this->args['type'], $tinstance);
+                $f = $this->datadir . '/' . str_replace($search, $replace, $this->path_format);
+                return $f;
+        }
+
+        function rrd_graph($debug=false) {
+                $graphdata = $this->rrd_gen_graph();
+                
+                if(!$debug) {
+                        # caching
+                        header("Expires: " . date(DATE_RFC822,strtotime("90 seconds")));
+                        header("content-type: image/png");
+                        $graphdata = implode(' ', $graphdata);
+                        echo `$graphdata`;
+                } else {
+                        print '<pre>';
+                        print_r($graphdata);
+                        print '</pre>';
+                }
+        }
+
+        function rrd_gen_graph() {
+                $filename = $this->get_filename();
+
+                $rrdgraph[] = '/usr/bin/rrdtool 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"', $this->rrd_title);
+                $rrdgraph[] = sprintf('-v "%s"', $this->rrd_vertical);
+                $rrdgraph[] = sprintf('-s -%d', is_numeric($this->seconds) ? $this->seconds : 86400);
+
+                if (is_array($this->args['tinstance']))
+                        $array = is_array($this->order) ? $this->order : $this->args['tinstance'];
+                else
+                        $array = $this->data_sources;
+
+                $i=0;
+                foreach ($array as $value) {
+                        if (is_array($this->args['tinstance'])) {
+                                $filename = $this->get_filename($value);
+                                $ds = $this->data_sources[0];
+                        } else {
+                                $filename = $this->get_filename();
+                                $ds = $value;
+                        }
+                        $rrdgraph[] = sprintf('DEF:min%s=%s:%s:MIN', $i, $filename, $ds);
+                        $rrdgraph[] = sprintf('DEF:avg%s=%s:%s:AVERAGE', $i, $filename, $ds);
+                        $rrdgraph[] = sprintf('DEF:max%s=%s:%s:MAX', $i, $filename, $ds);
+                        $i++;
+                }
+
+                if (!is_array($this->args['tinstance'])) {
+                        $rrdgraph[] = sprintf('AREA:max0#%s', $this->get_faded_color($this->colors[$this->data_sources[0]]));
+                        $rrdgraph[] = sprintf('AREA:min0#%s', 'ffffff');
+                }
+
+                $i=0;
+                foreach ($array as $value) {
+                        $dsname = $this->ds_names[$value] != '' ? $this->ds_names[$value] : $value;
+                        $color = is_array($this->colors) ? $this->colors[$value]: $this->colors;
+                        $rrdgraph[] = sprintf('LINE1:avg%d#%s:\'%s\'', $i, $this->validate_color($color), $dsname);
+                        $rrdgraph[] = sprintf('GPRINT:min%d:MIN:\'%s Min,\'', $i, $this->rrd_format);
+                        $rrdgraph[] = sprintf('GPRINT:avg%d:AVERAGE:\'%s Avg,\'', $i, $this->rrd_format);
+                        $rrdgraph[] = sprintf('GPRINT:max%d:MAX:\'%s Max,\'', $i, $this->rrd_format);
+                        $rrdgraph[] = sprintf('GPRINT:avg%d:LAST:\'%s Last\\l\'', $i, $this->rrd_format);
+                        $i++;
+                }
+        
+                return $rrdgraph;
+        }
+}
+
+?>