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, 32 insertions, 0 deletions

diff --git a/plugin/dns.json b/plugin/dns.json
new file mode 100644
index 0000000..6f8c542
--- /dev/null
+++ b/plugin/dns.json
@@ -0,0 +1,32 @@
+{
+        "dns_octets": {
+                "title": "DNS traffic",
+                "vertical": "Bit/s",
+                "type": "stacked",
+                "legend": {
+                        "queries": {
+                                "name": "Queries",
+                                "color": "0000ff"
+                        },
+                        "responses": {
+                                "name": "Responses",
+                                "color": "00ff00"
+                        }
+                }
+        },
+        "dns_opcode": {
+                "title": "DNS Opcode Query",
+                "vertical": "Queries/s",
+                "type": "stacked"
+        },
+        "dns_qtype": {
+                "title": "DNS QType",
+                "vertical": "Queries/s",
+                "type": "stacked"
+        },
+        "dns_rcode": {
+                "title": "DNS Reply code",
+                "vertical": "Queries/s",
+                "type": "stacked"
+        }
+}