Support Processor & Aggregator Plugins

closes #1726

metric.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/influxdata/influxdb/client/v2"
+	"github.com/influxdata/influxdb/models"
 )
 
 // ValueType is an enumeration of metric types that represent a simple value.
@@ -33,6 +34,9 @@ type Metric interface {
 	// UnixNano returns the unix nano time of the metric
 	UnixNano() int64
 
+	// HashID returns a non-cryptographic hash of the metric (name + tags)
+	HashID() uint64
+
 	// Fields returns the fields for the metric
 	Fields() map[string]interface{}
 
@@ -44,13 +48,21 @@ type Metric interface {
 
 	// Point returns a influxdb client.Point object
 	Point() *client.Point
+
+	// SetAggregate sets the metric's aggregate status
+	// This is so that aggregate metrics don't get re-sent to aggregator plugins
+	SetAggregate(bool)
+	// IsAggregate returns true if the metric is an aggregate
+	IsAggregate() bool
 }
 
 // metric is a wrapper of the influxdb client.Point struct
 type metric struct {
-	pt *client.Point
+	pt models.Point
 
 	mType ValueType
+
+	isaggregate bool
 }
 
 // NewMetric returns an untyped metric.
@@ -60,7 +72,7 @@ func NewMetric(
 	fields map[string]interface{},
 	t time.Time,
 ) (Metric, error) {
-	pt, err := client.NewPoint(name, tags, fields, t)
+	pt, err := models.NewPoint(name, tags, fields, t)
 	if err != nil {
 		return nil, err
 	}
@@ -79,7 +91,7 @@ func NewGaugeMetric(
 	fields map[string]interface{},
 	t time.Time,
 ) (Metric, error) {
-	pt, err := client.NewPoint(name, tags, fields, t)
+	pt, err := models.NewPoint(name, tags, fields, t)
 	if err != nil {
 		return nil, err
 	}
@@ -98,7 +110,7 @@ func NewCounterMetric(
 	fields map[string]interface{},
 	t time.Time,
 ) (Metric, error) {
-	pt, err := client.NewPoint(name, tags, fields, t)
+	pt, err := models.NewPoint(name, tags, fields, t)
 	if err != nil {
 		return nil, err
 	}
@@ -124,6 +136,10 @@ func (m *metric) Type() ValueType {
 	return m.mType
 }
 
+func (m *metric) HashID() uint64 {
+	return m.pt.HashID()
+}
+
 func (m *metric) UnixNano() int64 {
 	return m.pt.UnixNano()
 }
@@ -141,5 +157,13 @@ func (m *metric) PrecisionString(precison string) string {
 }
 
 func (m *metric) Point() *client.Point {
-	return m.pt
+	return client.NewPointFrom(m.pt)
+}
+
+func (m *metric) IsAggregate() bool {
+	return m.isaggregate
+}
+
+func (m *metric) SetAggregate(b bool) {
+	m.isaggregate = b
 }