Create public models for telegraf metrics, accumlator, plugins

This will basically make the root directory a place for storing the
major telegraf interfaces, which will make telegraf's godoc looks quite
a bit nicer. And make it easier for contributors to lookup the few data
types that they actually care about.

closes #564

plugins/outputs/amon/amon.go

@@ -11,6 +11,7 @@ import (
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/internal"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type Amon struct {
@@ -151,7 +152,7 @@ func (a *Amon) Close() error {
 }
 
 func init() {
-	outputs.Add("amon", func() outputs.Output {
+	outputs.Add("amon", func() telegraf.Output {
 		return &Amon{}
 	})
 }

plugins/outputs/amqp/amqp.go

@@ -12,6 +12,7 @@ import (
 
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 	"github.com/streadway/amqp"
 )
 
@@ -190,7 +191,7 @@ func (q *AMQP) Write(points []*client.Point) error {
 }
 
 func init() {
-	outputs.Add("amqp", func() outputs.Output {
+	outputs.Add("amqp", func() telegraf.Output {
 		return &AMQP{
 			Database:        DefaultDatabase,
 			Precision:       DefaultPrecision,

plugins/outputs/cloudwatch/cloudwatch.go

@@ -16,6 +16,7 @@ import (
 
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type CloudWatch struct {
@@ -230,7 +231,7 @@ func BuildDimensions(ptTags map[string]string) []*cloudwatch.Dimension {
 }
 
 func init() {
-	outputs.Add("cloudwatch", func() outputs.Output {
+	outputs.Add("cloudwatch", func() telegraf.Output {
 		return &CloudWatch{}
 	})
 }

plugins/outputs/datadog/datadog.go

@@ -13,6 +13,7 @@ import (
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/internal"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type Datadog struct {
@@ -173,7 +174,7 @@ func (d *Datadog) Close() error {
 }
 
 func init() {
-	outputs.Add("datadog", func() outputs.Output {
+	outputs.Add("datadog", func() telegraf.Output {
 		return NewDatadog(datadog_api)
 	})
 }

plugins/outputs/graphite/graphite.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 	"log"
 	"math/rand"
 	"net"
@@ -128,7 +129,7 @@ func (g *Graphite) Write(points []*client.Point) error {
 }
 
 func init() {
-	outputs.Add("graphite", func() outputs.Output {
+	outputs.Add("graphite", func() telegraf.Output {
 		return &Graphite{}
 	})
 }

plugins/outputs/influxdb/influxdb.go

@@ -12,6 +12,7 @@ import (
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/internal"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type InfluxDB struct {
@@ -156,7 +157,7 @@ func (i *InfluxDB) Write(points []*client.Point) error {
 }
 
 func init() {
-	outputs.Add("influxdb", func() outputs.Output {
+	outputs.Add("influxdb", func() telegraf.Output {
 		return &InfluxDB{}
 	})
 }

plugins/outputs/kafka/kafka.go

@@ -8,6 +8,7 @@ import (
 	"github.com/Shopify/sarama"
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 	"io/ioutil"
 )
 
@@ -140,7 +141,7 @@ func (k *Kafka) Write(points []*client.Point) error {
 }
 
 func init() {
-	outputs.Add("kafka", func() outputs.Output {
+	outputs.Add("kafka", func() telegraf.Output {
 		return &Kafka{}
 	})
 }

plugins/outputs/kinesis/kinesis.go

@@ -16,6 +16,7 @@ import (
 
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type KinesisOutput struct {
@@ -172,7 +173,7 @@ func (k *KinesisOutput) Write(points []*client.Point) error {
 }
 
 func init() {
-	outputs.Add("kinesis", func() outputs.Output {
+	outputs.Add("kinesis", func() telegraf.Output {
 		return &KinesisOutput{}
 	})
 }

plugins/outputs/librato/librato.go

@@ -10,6 +10,7 @@ import (
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/internal"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type Librato struct {
@@ -169,7 +170,7 @@ func (l *Librato) Close() error {
 }
 
 func init() {
-	outputs.Add("librato", func() outputs.Output {
+	outputs.Add("librato", func() telegraf.Output {
 		return NewLibrato(librato_api)
 	})
 }

plugins/outputs/mqtt/mqtt.go

@@ -13,6 +13,7 @@ import (
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/internal"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 const MaxClientIdLen = 8
@@ -184,7 +185,7 @@ func getCertPool(pemPath string) (*x509.CertPool, error) {
 }
 
 func init() {
-	outputs.Add("mqtt", func() outputs.Output {
+	outputs.Add("mqtt", func() telegraf.Output {
 		return &MQTT{}
 	})
 }

plugins/outputs/nsq/nsq.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 	"github.com/nsqio/go-nsq"
 )
 
@@ -65,7 +66,7 @@ func (n *NSQ) Write(points []*client.Point) error {
 }
 
 func init() {
-	outputs.Add("nsq", func() outputs.Output {
+	outputs.Add("nsq", func() telegraf.Output {
 		return &NSQ{}
 	})
 }

plugins/outputs/opentsdb/opentsdb.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type OpenTSDB struct {
@@ -162,7 +163,7 @@ func (o *OpenTSDB) Close() error {
 }
 
 func init() {
-	outputs.Add("opentsdb", func() outputs.Output {
+	outputs.Add("opentsdb", func() telegraf.Output {
 		return &OpenTSDB{}
 	})
 }

plugins/outputs/prometheus_client/prometheus_client.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
@@ -119,7 +120,7 @@ func (p *PrometheusClient) Write(points []*client.Point) error {
 }
 
 func init() {
-	outputs.Add("prometheus_client", func() outputs.Output {
+	outputs.Add("prometheus_client", func() telegraf.Output {
 		return &PrometheusClient{}
 	})
 }

plugins/outputs/registry.go

@@ -1,40 +1,10 @@
 package outputs
 
 import (
-	"github.com/influxdata/influxdb/client/v2"
+	"github.com/influxdata/telegraf"
 )
 
-type Output interface {
-	// Connect to the Output
-	Connect() error
-	// Close any connections to the Output
-	Close() error
-	// Description returns a one-sentence description on the Output
-	Description() string
-	// SampleConfig returns the default configuration of the Output
-	SampleConfig() string
-	// Write takes in group of points to be written to the Output
-	Write(points []*client.Point) error
-}
-
-type ServiceOutput interface {
-	// Connect to the Output
-	Connect() error
-	// Close any connections to the Output
-	Close() error
-	// Description returns a one-sentence description on the Output
-	Description() string
-	// SampleConfig returns the default configuration of the Output
-	SampleConfig() string
-	// Write takes in group of points to be written to the Output
-	Write(points []*client.Point) error
-	// Start the "service" that will provide an Output
-	Start() error
-	// Stop the "service" that will provide an Output
-	Stop()
-}
-
-type Creator func() Output
+type Creator func() telegraf.Output
 
 var Outputs = map[string]Creator{}
 

plugins/outputs/riemann/riemann.go

@@ -8,6 +8,7 @@ import (
 	"github.com/amir/raidman"
 	"github.com/influxdata/influxdb/client/v2"
 	"github.com/influxdata/telegraf/plugins/outputs"
+	"github.com/influxdata/telegraf"
 )
 
 type Riemann struct {
@@ -95,7 +96,7 @@ func buildEvents(p *client.Point) []*raidman.Event {
 }
 
 func init() {
-	outputs.Add("riemann", func() outputs.Output {
+	outputs.Add("riemann", func() telegraf.Output {
 		return &Riemann{}
 	})
 }