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, 84 insertions, 0 deletions

diff --git a/plugin/vserver.json b/plugin/vserver.json
new file mode 100644
index 0000000..7366693
--- /dev/null
+++ b/plugin/vserver.json
@@ -0,0 +1,84 @@
+{
+        "load": {
+                "title": "System load",
+                "vertical": "System load",
+                "type": "default",
+                "legend": {
+                        "shortterm": {
+                                "name": " 1 min",
+                                "color": "00ff00"
+                        },
+                        "midterm": {
+                                "name": " 5 min",
+                                "color": "0000ff"
+                        },
+                        "longterm": {
+                                "name": "15 min",
+                                "color": "ff0000"
+                        }
+                },
+                "legend_format": "%.2lf"
+        },
+        "vs_memory": {
+                "title": "Memory utilization ({{PI}})",
+                "vertical": "Bytes",
+                "type": "stacked",
+                "legend": {
+                        "vm": {
+                                "name": "Virtual memory pages",
+                                "color": "0000ff"
+                        },
+                        "vml": {
+                                "name": "Pages locked into memory",
+                                "color": "0000ff"
+                        },
+                        "rss": {
+                                "name": "Resident set size",
+                                "color": "ffb000"
+                        },
+                        "anon": {
+                                "name": "Anonymous memory pages",
+                                "color": "ff00ff"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "vs_threads": {
+                "title": "Threads ({{PI}})",
+                "type": "stacked",
+                "legend": {
+                        "running": {
+                                "name": "Running",
+                                "color": "0000ff"
+                        },
+                        "uninterruptable": {
+                                "name": "Uninterruptible",
+                                "color": "ff00ff"
+                        },
+                        "onhold": {
+                                "name": "On Hold",
+                                "color": "00e000"
+                        },
+                        "total": {
+                                "name": "Total",
+                                "color": "Total"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "if_octets": {
+                "title": "Interface Traffic ({{PI}})",
+                "vertical": "{{ND}} per second",
+                "legend_format": "%5.1lf%s",
+                "datasize": true
+        },
+        "vs_processes": {
+                "title": "Processes ({{PI}})",
+                "legend": {
+                        "value": {
+                                "name": "Processes"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        }
+}