Change storage format

sinks/metricSink.go

@@ -1,7 +1,8 @@
 package sinks
 
 import (
-	"time"
+	//	"time"
+	lp "github.com/influxdata/line-protocol"
 )
 
 type SinkConfig struct {
@@ -25,6 +26,6 @@ type Sink struct {
 
 type SinkFuncs interface {
 	Init(config SinkConfig) error
-	Write(measurement string, tags map[string]string, fields map[string]interface{}, t time.Time) error
+	Write(point lp.MutableMetric) error
 	Close()
 }