From cd94ef34134d8f06af83ec97119018b4e80346a0 Mon Sep 17 00:00:00 2001
From: Pim van den Berg
Date: Sun, 20 Sep 2009 13:36:25 +0200
Subject: 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.
---
 inc/collectd.inc.php  | 176 ++++++++++++++++++++++++++++++++++++++++++++++++++
 inc/html.inc.php      |  45 +++++++++++++
 inc/rrdtool.class.php |  25 +++++++
 3 files changed, 246 insertions(+)
 create mode 100644 inc/collectd.inc.php
 create mode 100644 inc/html.inc.php
 create mode 100644 inc/rrdtool.class.php

(limited to 'inc')

diff --git a/inc/collectd.inc.php b/inc/collectd.inc.php
new file mode 100644
index 0000000..2724c05
--- /dev/null
+++ b/inc/collectd.inc.php
@@ -0,0 +1,176 @@
+<?php
+
+require_once 'conf/common.inc.php';
+
+# returns an array of all collectd hosts
+function collectd_hosts() {
+	global $CONFIG;
+
+	if (!is_dir($CONFIG['datadir']))
+		return false;
+
+	$dir = scandir($CONFIG['datadir']);
+	foreach($dir as $k => $v) {
+		if(!is_dir($CONFIG['datadir'].'/'.$v) || $v == '.' || $v == '..')
+			unset($dir[$k]);
+	}
+	return($dir);
+}
+
+# returns an array of plugins/pinstances/types/tinstances
+function collectd_plugindata($host) {
+	global $CONFIG;
+
+	if (!is_dir($CONFIG['datadir'].'/'.$host))
+		return false;
+
+	chdir($CONFIG['datadir'].'/'.$host);
+	$files = glob("*/*.rrd");
+	if (!$files)
+		return false;
+	
+	$data;
+	$i = 0;
+	foreach($files as $item) {
+		unset($part);
+
+		# split item by plugin/type
+		$part = explode('/', $item);
+		$part[1] = preg_replace('/\.rrd/', '', $part[1]);
+
+		# plugin
+		$data[$i]['p'] = preg_replace('/-.+/', '', $part[0]);
+
+		# plugin instance
+		if(preg_match('/-/', $part[0]))
+			$data[$i]['pi'] = preg_replace('/^[a-z_]+\-/', '', $part[0]);
+		
+		# type
+		$data[$i]['t'] = preg_replace('/-.+/', '', $part[1]);
+
+		# type instance
+		if(preg_match('/-/', $part[1]))
+			$data[$i]['ti'] = preg_replace('/^[a-z_]+\-/', '', $part[1]);
+
+		$i++;
+	}
+	return($data);
+}
+
+# returns an array of all plugins of a host
+function collectd_plugins($host) {
+	$plugindata = collectd_plugindata($host);
+
+	$plugins = array();
+	foreach ($plugindata as $item) {
+		if (!in_array($item['p'], $plugins))
+			$plugins[] = $item['p'];
+	}
+	
+	return $plugins;
+}
+
+# returns an array of all pi/t/ti of an plugin
+function collectd_plugindetail($host, $plugin, $detail, $where=NULL) {
+	$details = array('pi', 't', 'ti');
+	if (!in_array($detail, $details))
+		return false;
+
+	$plugindata = collectd_plugindata($host);
+
+	$return = array();
+	foreach ($plugindata as $item) {
+		if ($item['p'] == $plugin && !in_array($item[$detail], $return) && isset($item[$detail])) {
+			if ($where) {
+				$add = true;
+				# add detail to returnvalue if all where is true
+				foreach($where as $key => $value) {
+					if ($item[$key] != $value)
+						$add = false;
+				}
+				if ($add)
+					$return[] = $item[$detail];
+			} else {
+				$return[] = $item[$detail];
+			}
+		}
+	}
+
+	if (empty($return))
+		return false;
+	
+	return $return;
+}
+
+# generate graph url's for a plugin of a host
+function graphs_from_plugin($host, $plugin) {
+	global $CONFIG;
+
+	$pis = collectd_plugindetail($host, $plugin, 'pi');
+	$ts = collectd_plugindetail($host, $plugin, 't');
+	$tis = collectd_plugindetail($host, $plugin, 'ti');
+	if (!$pis) $pis = array('NULL');
+	if (!$tis) $tis = array('NULL');
+
+	foreach($pis as $pi) {
+		if ($CONFIG['groupby'][$plugin] == 'type') {
+			foreach ($ts as $t) {
+				$items = array(
+					'h' => $host,
+					'p' => $plugin,
+					'pi' => $pi,
+					't' => $t
+				);
+				printf('<a href="%s/%s"><img src="%s/%s"></a>'."\n",
+					$CONFIG['weburl'],
+					build_url('detail.php', $items).'&x=800&y=350',
+					$CONFIG['weburl'],
+					build_url('graph.php', $items)
+				);
+			}
+		} else {
+			foreach ($tis as $ti) {
+				foreach ($ts as $t) {
+					$items = array(
+						'h' => $host,
+						'p' => $plugin,
+						'pi' => $pi,
+						't' => $t,
+						'ti' => $ti
+					);
+					printf('<a href="%s/%s"><img src="%s/%s"></a>'."\n",
+						$CONFIG['weburl'],
+						build_url('detail.php', $items).'&x=800&y=350',
+						$CONFIG['weburl'],
+						build_url('graph.php', $items)
+					);
+				}
+			}
+		}
+	}
+}
+
+# generate an url with GET values from $items
+function build_url($base, $items, $s=86400) {
+	if (!is_array($items))
+		return false;
+	
+	if (!is_numeric($s))
+		return false;
+
+	$i=0;
+	foreach ($items as $key => $value) {
+		# don't include empty values
+		if ($value == 'NULL')
+			continue;
+
+		$base .= sprintf('%s%s=%s', $i==0 ? '?' : '&', $key, $value);
+		$i++;
+	}
+	if (!isset($items['s']))
+		$base .= '&s='.$s;
+
+	return $base;
+}
+
+?>
diff --git a/inc/html.inc.php b/inc/html.inc.php
new file mode 100644
index 0000000..d1d2a65
--- /dev/null
+++ b/inc/html.inc.php
@@ -0,0 +1,45 @@
+<?php
+
+function html_start() {
+	echo <<<EOT
+<!DOCTYPE HTML>
+<html>
+<head>
+	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+	<title>Collectd Graph Panel</title>
+	<link rel="stylesheet" href="layout/style.css" type="text/css">
+</head>
+<body>
+
+EOT;
+}
+
+function html_end() {
+	echo <<<EOT
+</body>
+</html>
+EOT;
+}
+
+require_once 'conf/common.inc.php';
+require_once 'inc/rrdtool.class.php';
+function host_summary($hosts) {
+	global $CONFIG;
+
+	$rrd = new RRDTool;
+
+	echo "<table class=\"summary\">\n";
+
+	foreach($hosts as $host) {
+		$rrd_info = $rrd->rrd_info($CONFIG['datadir'].'/'.$host.'/load/load.rrd');
+		if (!$rrd_info)
+			continue;
+		printf('<tr><th><a href="%s/host.php?h=%s">%s</a></th><td>%.2f</td><td>%.2f</td><td>%.2f</td></tr>'."\n",
+		$CONFIG['weburl'],$host, $host,
+		$rrd_info["ds[shortterm].last_ds"], $rrd_info["ds[midterm].last_ds"], $rrd_info["ds[longterm].last_ds"]);
+	}
+
+	echo "</table>\n";
+}
+
+?>
diff --git a/inc/rrdtool.class.php b/inc/rrdtool.class.php
new file mode 100644
index 0000000..e1a7b4b
--- /dev/null
+++ b/inc/rrdtool.class.php
@@ -0,0 +1,25 @@
+<?php
+
+class RRDTool {
+	var $width = 175;
+	var $height = 125;
+
+	function rrd_info($rrdfile) {
+		if (file_exists($rrdfile)) {
+			$raw_info = shell_exec('/usr/bin/rrdtool info '.$rrdfile);
+			$raw_array = explode("\n", $raw_info);
+			foreach ($raw_array as $key => $info) {
+				if ($info != "") {
+					$item_info = explode(" = ", $info);
+					$item_info[1] = preg_replace('/"/', '', $item_info[1]);
+					$info_array[$item_info[0]] = $item_info[1];
+				}
+			}
+			return($info_array);
+		} else {
+			return false;
+		}
+	}
+}
+
+?>
-- 
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