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, 134 insertions, 0 deletions

diff --git a/plugin/memcached.json b/plugin/memcached.json
new file mode 100644
index 0000000..0e7e0fd
--- /dev/null
+++ b/plugin/memcached.json
@@ -0,0 +1,134 @@
+{
+        "df": {
+                "title": "Memcached Memory Usage",
+                "vertical": "Bytes",
+                "type": "stacked",
+                "legend": {
+                        "free": {
+                                "name": "Free",
+                                "color": "00ff00"
+                        },
+                        "used": {
+                                "name": "Used",
+                                "color": "ff0000"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "memcached_command": {
+                "title": "Memcached Commands",
+                "vertical": "Commands",
+                "type": "stacked",
+                "legend": {
+                        "flush": {
+                                "name": "Flush",
+                                "color": "00e000"
+                        },
+                        "get": {
+                                "name": "Get",
+                                "color": "0000ff"
+                        },
+                        "set": {
+                                "name": "Set",
+                                "color": "ffb000"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "memcached_connections": {
+                "title": "Memcached Number of Connections",
+                "vertical": "Connections",
+                "legend": {
+                        "value": {
+                                "name": "Connections",
+                                "color": "00b000"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "memcached_items": {
+                "title": "Number of Items in Memcached",
+                "vertical": "Items",
+                "legend": {
+                        "value": {
+                                "name": "Items",
+                                "color": "00b000"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "memcached_octets": {
+                "title": "Memcached Network Traffic",
+                "vertical": "{{ND}}",
+                "type": "io",
+                "legend": {
+                        "rx": {
+                                "name": "Receive",
+                                "color": "0000ff"
+                        },
+                        "tx": {
+                                "name": "Transmit",
+                                "color": "00b000"
+                        }
+                },
+                "legend_format": "%5.1lf%s",
+                "datasize": true
+        },
+        "memcached_ops": {
+                "title": "Memcached Operations",
+                "vertical": "Commands",
+                "type": "stacked",
+                "legend": {
+                        "evictions": {
+                                "name": "Evictions",
+                                "color": "00e000"
+                        },
+                        "hits": {
+                                "name": "Hits",
+                                "color": "0000ff"
+                        },
+                        "misses": {
+                                "name": "Misses",
+                                "color": "ffb000"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "percent": {
+                "title": "Memcached Hit Ratio",
+                "vertical": "Percent",
+                "legend": {
+                        "value": {
+                                "name": "Percent",
+                                "color": "00e000"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "ps_count": {
+                "title": "Memcached number of Threads",
+                "vertical": "Threads",
+                "legend": {
+                        "value": {
+                                "name": "Threads",
+                                "color": "00b000"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        },
+        "ps_cputime": {
+                "title": "CPU Time consumed by Memcached",
+                "vertical": "CPU Time",
+                "legend": {
+                        "user": {
+                                "name": "User",
+                                "color": "00e000"
+                        },
+                        "syst": {
+                                "name": "System",
+                                "color": "0000ff"
+                        }
+                },
+                "legend_format": "%5.1lf%s"
+        }
+}