graph.php: use JSON plugins instead of including PHP plugin files

A couple of big changes here. A lot of logic moved to graph.php.

The PHP plugin files have been rewritten to JSON. In these JSON files
*everything* is optional. Also *NOT* having a JSON plugin file won't
block you from having a graph. The JSON will just make the graphs
prettier (by having a title, y-axis title, legend, colors, etc..).

The Collectd types.db file is parsed and used to determine RRD content.
When things are not defined in the JSON it will fallback to a default.

1 files changed, 3 insertions, 0 deletions

diff --git a/conf/config.php b/conf/config.php
index 86b0870..b086455 100644
--- a/conf/config.php
+++ b/conf/config.php
@@ -6,6 +6,9 @@ $CONFIG['version'] = 5;
 # collectd's datadir
 $CONFIG['datadir'] = '/var/lib/collectd/rrd';
 
+# location of the types.db file
+$CONFIG['typesdb'] = '/usr/share/collectd/types.db';
+
 # rrdtool executable
 $CONFIG['rrdtool'] = '/usr/bin/rrdtool';