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Fixing Librato plugin

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closes #722
This commit is contained in:
bastard
2016-02-26 20:06:56 +00:00
committed by Cameron Sparr
parent 04a8e5b888
commit baa38d6266
5 changed files with 164 additions and 42 deletions
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62
plugins/outputs/librato/librato.go
View File

@@ -4,19 +4,24 @@ import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net/http"
"strings"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/plugins/outputs"
"github.com/influxdata/telegraf/plugins/serializers/graphite"
)
type Librato struct {
ApiUser string
ApiToken string
SourceTag string
Timeout internal.Duration
ApiUser string
ApiToken string
Debug bool
NameFromTags bool
SourceTag string
Timeout internal.Duration
apiUrl string
client *http.Client
@@ -32,9 +37,12 @@ var sampleConfig = `
## Librato API token
api_token = "my-secret-token" # required.
## Tag Field to populate source attribute (optional)
## This is typically the _hostname_ from which the metric was obtained.
source_tag = "hostname"
### Debug
# debug = false
### Tag Field to populate source attribute (optional)
### This is typically the _hostname_ from which the metric was obtained.
source_tag = "host"
## Connection timeout.
# timeout = "5s"
@@ -82,17 +90,27 @@ func (l *Librato) Write(metrics []telegraf.Metric) error {
for _, gauge := range gauges {
tempGauges = append(tempGauges, gauge)
metricCounter++
if l.Debug {
log.Printf("[DEBUG] Got a gauge: %v\n", gauge)
}
}
} else {
log.Printf("unable to build Gauge for %s, skipping\n", m.Name())
if l.Debug {
log.Printf("[DEBUG] Couldn't build gauge: %v\n", err)
}
}
}
lmetrics.Gauges = make([]*Gauge, metricCounter)
copy(lmetrics.Gauges, tempGauges[0:])
metricsBytes, err := json.Marshal(metrics)
metricsBytes, err := json.Marshal(lmetrics)
if err != nil {
return fmt.Errorf("unable to marshal Metrics, %s\n", err.Error())
} else {
if l.Debug {
log.Printf("[DEBUG] Librato request: %v\n", string(metricsBytes))
}
}
req, err := http.NewRequest("POST", l.apiUrl, bytes.NewBuffer(metricsBytes))
if err != nil {
@@ -103,8 +121,21 @@ func (l *Librato) Write(metrics []telegraf.Metric) error {
resp, err := l.client.Do(req)
if err != nil {
if l.Debug {
log.Printf("[DEBUG] Error POSTing metrics: %v\n", err.Error())
}
return fmt.Errorf("error POSTing metrics, %s\n", err.Error())
} else {
if l.Debug {
htmlData, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Printf("[DEBUG] Couldn't get response! (%v)\n", err)
} else {
log.Printf("[DEBUG] Librato response: %v\n", string(htmlData))
}
}
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
@@ -122,11 +153,20 @@ func (l *Librato) Description() string {
return "Configuration for Librato API to send metrics to."
}
func (l *Librato) buildGaugeName(m telegraf.Metric, fieldName string) string {
// Use the GraphiteSerializer
graphiteSerializer := graphite.GraphiteSerializer{}
serializedMetric := graphiteSerializer.SerializeBucketName(m, fieldName)
// Deal with slash characters:
return strings.Replace(serializedMetric, "/", "-", -1)
}
func (l *Librato) buildGauges(m telegraf.Metric) ([]*Gauge, error) {
gauges := []*Gauge{}
for fieldName, value := range m.Fields() {
gauge := &Gauge{
Name: m.Name() + "_" + fieldName,
Name: l.buildGaugeName(m, fieldName),
MeasureTime: m.Time().Unix(),
}
if err := gauge.setValue(value); err != nil {
@@ -142,6 +182,10 @@ func (l *Librato) buildGauges(m telegraf.Metric) ([]*Gauge, error) {
l.SourceTag)
}
}
gauges = append(gauges, gauge)
}
if l.Debug {
fmt.Printf("[DEBUG] Built gauges: %v\n", gauges)
}
return gauges, nil
}

34
plugins/outputs/librato/librato_test.go
View File

@@ -9,9 +9,9 @@ import (
"testing"
"time"
"github.com/influxdata/telegraf/testutil"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/plugins/serializers/graphite"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/require"
)
@@ -28,6 +28,14 @@ func fakeLibrato() *Librato {
return l
}
func BuildTags(t *testing.T) {
testMetric := testutil.TestMetric(0.0, "test1")
graphiteSerializer := graphite.GraphiteSerializer{}
tags, err := graphiteSerializer.Serialize(testMetric)
fmt.Printf("Tags: %v", tags)
require.NoError(t, err)
}
func TestUriOverride(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
@@ -78,7 +86,7 @@ func TestBuildGauge(t *testing.T) {
{
testutil.TestMetric(0.0, "test1"),
&Gauge{
Name: "test1",
Name: "value1.test1.value",
MeasureTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 0.0,
},
@@ -87,7 +95,7 @@ func TestBuildGauge(t *testing.T) {
{
testutil.TestMetric(1.0, "test2"),
&Gauge{
Name: "test2",
Name: "value1.test2.value",
MeasureTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 1.0,
},
@@ -96,7 +104,7 @@ func TestBuildGauge(t *testing.T) {
{
testutil.TestMetric(10, "test3"),
&Gauge{
Name: "test3",
Name: "value1.test3.value",
MeasureTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 10.0,
},
@@ -105,7 +113,7 @@ func TestBuildGauge(t *testing.T) {
{
testutil.TestMetric(int32(112345), "test4"),
&Gauge{
Name: "test4",
Name: "value1.test4.value",
MeasureTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 112345.0,
},
@@ -114,7 +122,7 @@ func TestBuildGauge(t *testing.T) {
{
testutil.TestMetric(int64(112345), "test5"),
&Gauge{
Name: "test5",
Name: "value1.test5.value",
MeasureTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 112345.0,
},
@@ -123,7 +131,7 @@ func TestBuildGauge(t *testing.T) {
{
testutil.TestMetric(float32(11234.5), "test6"),
&Gauge{
Name: "test6",
Name: "value1.test6.value",
MeasureTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 11234.5,
},
@@ -132,7 +140,7 @@ func TestBuildGauge(t *testing.T) {
{
testutil.TestMetric("11234.5", "test7"),
&Gauge{
Name: "test7",
Name: "value1.test7.value",
MeasureTime: time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 11234.5,
},
@@ -163,13 +171,13 @@ func TestBuildGauge(t *testing.T) {
func TestBuildGaugeWithSource(t *testing.T) {
pt1, _ := telegraf.NewMetric(
"test1",
map[string]string{"hostname": "192.168.0.1"},
map[string]string{"hostname": "192.168.0.1", "tag1": "value1"},
map[string]interface{}{"value": 0.0},
time.Date(2010, time.November, 10, 23, 0, 0, 0, time.UTC),
)
pt2, _ := telegraf.NewMetric(
"test2",
map[string]string{"hostnam": "192.168.0.1"},
map[string]string{"hostnam": "192.168.0.1", "tag1": "value1"},
map[string]interface{}{"value": 1.0},
time.Date(2010, time.December, 10, 23, 0, 0, 0, time.UTC),
)
@@ -182,7 +190,7 @@ func TestBuildGaugeWithSource(t *testing.T) {
{
pt1,
&Gauge{
Name: "test1",
Name: "192_168_0_1.value1.test1.value",
MeasureTime: time.Date(2010, time.November, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 0.0,
Source: "192.168.0.1",
@@ -192,7 +200,7 @@ func TestBuildGaugeWithSource(t *testing.T) {
{
pt2,
&Gauge{
Name: "test2",
Name: "192_168_0_1.value1.test1.value",
MeasureTime: time.Date(2010, time.December, 10, 23, 0, 0, 0, time.UTC).Unix(),
Value: 1.0,
},