Additional comments

receivers/metricReceiver.go

@@ -8,6 +8,7 @@ type defaultReceiverConfig struct {
 	Type string `json:"type"`
 }
 
+// Receiver configuration: Listen address, port
 type ReceiverConfig struct {
 	Addr         string `json:"address"`
 	Port         string `json:"port"`
@@ -23,15 +24,17 @@ type receiver struct {
 
 type Receiver interface {
 	Start()
-	Close()
-	Name() string
-	SetSink(sink chan lp.CCMetric)
+	Close()                        // Close / finish metric receiver
+	Name() string                  // Name of the metric receiver
+	SetSink(sink chan lp.CCMetric) // Set sink channel
 }
 
+// Name returns the name of the metric receiver
 func (r *receiver) Name() string {
 	return r.name
 }
 
+// SetSink set the sink channel
 func (r *receiver) SetSink(sink chan lp.CCMetric) {
 	r.sink = sink
 }