renaming plugins -> inputs

plugins/outputs/amon/README.md

@@ -0,0 +1,9 @@
+# Amon Output Plugin
+
+This plugin writes to [Amon](https://www.amon.cx)
+and requires an `serverkey` and `amoninstance` URL which can be obtained [here](https://www.amon.cx/docs/monitoring/)
+for the account.
+
+If the point value being sent cannot be converted to a float64, the metric is skipped.
+
+Metrics are grouped by converting any `_` characters to `.` in the Point Name.

plugins/outputs/amon/amon.go

@@ -0,0 +1,157 @@
+package amon
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"strings"
+
+	"github.com/influxdb/influxdb/client/v2"
+	"github.com/influxdb/telegraf/internal"
+	"github.com/influxdb/telegraf/plugins/outputs"
+)
+
+type Amon struct {
+	ServerKey    string
+	AmonInstance string
+	Timeout      internal.Duration
+
+	client *http.Client
+}
+
+var sampleConfig = `
+  # Amon Server Key
+  server_key = "my-server-key" # required.
+
+  # Amon Instance URL
+  amon_instance = "https://youramoninstance" # required
+
+  # Connection timeout.
+  # timeout = "5s"
+`
+
+type TimeSeries struct {
+	Series []*Metric `json:"series"`
+}
+
+type Metric struct {
+	Metric string   `json:"metric"`
+	Points [1]Point `json:"points"`
+}
+
+type Point [2]float64
+
+func (a *Amon) Connect() error {
+	if a.ServerKey == "" || a.AmonInstance == "" {
+		return fmt.Errorf("serverkey and amon_instance are required fields for amon output")
+	}
+	a.client = &http.Client{
+		Timeout: a.Timeout.Duration,
+	}
+	return nil
+}
+
+func (a *Amon) Write(points []*client.Point) error {
+	if len(points) == 0 {
+		return nil
+	}
+	ts := TimeSeries{}
+	tempSeries := []*Metric{}
+	metricCounter := 0
+
+	for _, pt := range points {
+		mname := strings.Replace(pt.Name(), "_", ".", -1)
+		if amonPts, err := buildPoints(pt); err == nil {
+			for fieldName, amonPt := range amonPts {
+				metric := &Metric{
+					Metric: mname + "_" + strings.Replace(fieldName, "_", ".", -1),
+				}
+				metric.Points[0] = amonPt
+				tempSeries = append(tempSeries, metric)
+				metricCounter++
+			}
+		} else {
+			log.Printf("unable to build Metric for %s, skipping\n", pt.Name())
+		}
+	}
+
+	ts.Series = make([]*Metric, metricCounter)
+	copy(ts.Series, tempSeries[0:])
+	tsBytes, err := json.Marshal(ts)
+	if err != nil {
+		return fmt.Errorf("unable to marshal TimeSeries, %s\n", err.Error())
+	}
+	req, err := http.NewRequest("POST", a.authenticatedUrl(), bytes.NewBuffer(tsBytes))
+	if err != nil {
+		return fmt.Errorf("unable to create http.Request, %s\n", err.Error())
+	}
+	req.Header.Add("Content-Type", "application/json")
+
+	resp, err := a.client.Do(req)
+	if err != nil {
+		return fmt.Errorf("error POSTing metrics, %s\n", err.Error())
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode < 200 || resp.StatusCode > 209 {
+		return fmt.Errorf("received bad status code, %d\n", resp.StatusCode)
+	}
+
+	return nil
+}
+
+func (a *Amon) SampleConfig() string {
+	return sampleConfig
+}
+
+func (a *Amon) Description() string {
+	return "Configuration for Amon Server to send metrics to."
+}
+
+func (a *Amon) authenticatedUrl() string {
+
+	return fmt.Sprintf("%s/api/system/%s", a.AmonInstance, a.ServerKey)
+}
+
+func buildPoints(pt *client.Point) (map[string]Point, error) {
+	pts := make(map[string]Point)
+	for k, v := range pt.Fields() {
+		var p Point
+		if err := p.setValue(v); err != nil {
+			return pts, fmt.Errorf("unable to extract value from Fields, %s", err.Error())
+		}
+		p[0] = float64(pt.Time().Unix())
+		pts[k] = p
+	}
+	return pts, nil
+}
+
+func (p *Point) setValue(v interface{}) error {
+	switch d := v.(type) {
+	case int:
+		p[1] = float64(int(d))
+	case int32:
+		p[1] = float64(int32(d))
+	case int64:
+		p[1] = float64(int64(d))
+	case float32:
+		p[1] = float64(d)
+	case float64:
+		p[1] = float64(d)
+	default:
+		return fmt.Errorf("undeterminable type")
+	}
+	return nil
+}
+
+func (a *Amon) Close() error {
+	return nil
+}
+
+func init() {
+	outputs.Add("amon", func() outputs.Output {
+		return &Amon{}
+	})
+}

plugins/outputs/amon/amon_test.go

@@ -0,0 +1,90 @@
+package amon
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/influxdb/telegraf/testutil"
+
+	"github.com/influxdb/influxdb/client/v2"
+)
+
+func TestBuildPoint(t *testing.T) {
+	var tagtests = []struct {
+		ptIn  *client.Point
+		outPt Point
+		err   error
+	}{
+		{
+			testutil.TestPoint(float64(0.0), "testpt"),
+			Point{
+				float64(time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix()),
+				0.0,
+			},
+			nil,
+		},
+		{
+			testutil.TestPoint(float64(1.0), "testpt"),
+			Point{
+				float64(time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix()),
+				1.0,
+			},
+			nil,
+		},
+		{
+			testutil.TestPoint(int(10), "testpt"),
+			Point{
+				float64(time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix()),
+				10.0,
+			},
+			nil,
+		},
+		{
+			testutil.TestPoint(int32(112345), "testpt"),
+			Point{
+				float64(time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix()),
+				112345.0,
+			},
+			nil,
+		},
+		{
+			testutil.TestPoint(int64(112345), "testpt"),
+			Point{
+				float64(time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix()),
+				112345.0,
+			},
+			nil,
+		},
+		{
+			testutil.TestPoint(float32(11234.5), "testpt"),
+			Point{
+				float64(time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix()),
+				11234.5,
+			},
+			nil,
+		},
+		{
+			testutil.TestPoint("11234.5", "testpt"),
+			Point{
+				float64(time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix()),
+				11234.5,
+			},
+			fmt.Errorf("unable to extract value from Fields, undeterminable type"),
+		},
+	}
+	for _, tt := range tagtests {
+		pt, err := buildPoints(tt.ptIn)
+		if err != nil && tt.err == nil {
+			t.Errorf("%s: unexpected error, %+v\n", tt.ptIn.Name(), err)
+		}
+		if tt.err != nil && err == nil {
+			t.Errorf("%s: expected an error (%s) but none returned", tt.ptIn.Name(), tt.err.Error())
+		}
+		if !reflect.DeepEqual(pt["value"], tt.outPt) && tt.err == nil {
+			t.Errorf("%s: \nexpected %+v\ngot %+v\n",
+				tt.ptIn.Name(), tt.outPt, pt["value"])
+		}
+	}
+}