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, 43 insertions, 0 deletions

diff --git a/plugin/cpu.json b/plugin/cpu.json
new file mode 100644
index 0000000..50254f8
--- /dev/null
+++ b/plugin/cpu.json
@@ -0,0 +1,43 @@
+{
+        "cpu": {
+                "title": "CPU-{{PI}} usage",
+                "vertical": "Jiffies",
+                "rrdtool_opts": "-u 100",
+                "type": "stacked",
+                "legend": {
+                        "idle": {
+                                "name": "Idle",
+                                "color": "e8e8e8"
+                        },
+                        "nice": {
+                                "name": "Nice",
+                                "color": "00e000"
+                        },
+                        "user": {
+                                "name": "User",
+                                "color": "0000ff"
+                        },
+                        "wait": {
+                                "name": "Wait-IO",
+                                "color": "ffb000"
+                        },
+                        "system": {
+                                "name": "System",
+                                "color": "ff0000"
+                        },
+                        "softirq": {
+                                "name": "SoftIRQ",
+                                "color": "ff00ff"
+                        },
+                        "interrupt": {
+                                "name": "IRQ",
+                                "color": "a000a0"
+                        },
+                        "steal": {
+                                "name": "Steal",
+                                "color": "000000"
+                        }
+                },
+                "legend_format": "%5.2lf"
+        }
+}