Statsd listener plugin

implement gauges, sets, counters

plugins/registry.go

@@ -20,11 +20,35 @@ type Accumulator interface {
 }
 
 type Plugin interface {
+	// SampleConfig returns the default configuration of the Plugin
 	SampleConfig() string
+
+	// Description returns a one-sentence description on the Plugin
 	Description() string
+
+	// Gather takes in an accumulator and adds the metrics that the Plugin
+	// gathers. This is called every "interval"
 	Gather(Accumulator) error
 }
 
+type ServicePlugin interface {
+	// SampleConfig returns the default configuration of the Plugin
+	SampleConfig() string
+
+	// Description returns a one-sentence description on the Plugin
+	Description() string
+
+	// Gather takes in an accumulator and adds the metrics that the Plugin
+	// gathers. This is called every "interval"
+	Gather(Accumulator) error
+
+	// Start starts the ServicePlugin's service, whatever that may be
+	Start() error
+
+	// Stop stops the services and closes any necessary channels and connections
+	Stop()
+}
+
 type Creator func() Plugin
 
 var Plugins = map[string]Creator{}