Twemproxy go fmt and bug fixups, CHANGELOG, README

closes #365

CHANGELOG.md

@@ -15,6 +15,7 @@ changed to just run docker commands in the Makefile. See `make docker-run` and
 - [#338](https://github.com/influxdb/telegraf/pull/338): Restart Telegraf on package upgrade. Thanks @linsomniac!
 - [#337](https://github.com/influxdb/telegraf/pull/337): Jolokia plugin, thanks @saiello!
 - [#350](https://github.com/influxdb/telegraf/pull/350): Amon output.
+- [#365](https://github.com/influxdb/telegraf/pull/365): Twemproxy plugin by @codeb2cc
 - [#317](https://github.com/influxdb/telegraf/issues/317): ZFS plugin, thanks @cornerot!
 - [#364](https://github.com/influxdb/telegraf/pull/364): Support InfluxDB UDP output.
 

README.md

@@ -190,6 +190,7 @@ Telegraf currently has support for collecting metrics from:
 * rabbitmq
 * redis
 * rethinkdb
+* twemproxy
 * zfs
 * zookeeper
 * system

plugins/twemproxy/twemproxy.go

@@ -17,18 +17,16 @@ type Twemproxy struct {
 }
 
 type TwemproxyInstance struct {
-	StatsAddr string
+	Addr  string
-	Pools     []string
+	Pools []string
 }
 
 var sampleConfig = `
-  # Twemproxy plugin config
+  [[twemproxy.instances]]
-  [twemproxy]
+    # Twemproxy stats address and port (no scheme)
-    [[twemproxy.instances]]
+    addr = "localhost:22222"
-      # Twemproxy stats address and port(NO scheme!)
+    # Monitor pool name
-      statsAddr = "10.16.29.1:22222"
+    pools = ["redis_pool", "mc_pool"]
-      # Monitor pool name
-      pools = ["redis_pool", "mc_pool"]
 `
 
 func (t *Twemproxy) SampleConfig() string {
@@ -69,7 +67,7 @@ func (t *Twemproxy) Gather(acc plugins.Accumulator) error {
 func (ti *TwemproxyInstance) Gather(
 	acc plugins.Accumulator,
 ) error {
-	conn, err := net.DialTimeout("tcp", ti.StatsAddr, 1*time.Second)
+	conn, err := net.DialTimeout("tcp", ti.Addr, 1*time.Second)
 	if err != nil {
 		return err
 	}
@@ -84,7 +82,7 @@ func (ti *TwemproxyInstance) Gather(
 	}
 
 	tags := make(map[string]string)
-	tags["twemproxy"] = ti.StatsAddr
+	tags["twemproxy"] = ti.Addr
 	ti.processStat(acc, tags, stats)
 
 	return nil

plugins/twemproxy/twemproxy_test.go

@@ -1,16 +1,16 @@
 package twemproxy
 
 import (
+	"encoding/json"
 	"net"
 	"testing"
-	"encoding/json"
 
 	"github.com/influxdb/telegraf/testutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
-const sampleStatsAddr = "127.0.0.1:22222"
+const sampleAddr = "127.0.0.1:22222"
 
 const sampleStats = `{
   "total_connections": 276448,
@@ -61,7 +61,7 @@ const sampleStats = `{
 }`
 
 func mockTwemproxyServer() (net.Listener, error) {
-	listener, err := net.Listen("tcp", sampleStatsAddr)
+	listener, err := net.Listen("tcp", sampleAddr)
 	if err != nil {
 		return nil, err
 	}
@@ -87,8 +87,8 @@ func TestGather(t *testing.T) {
 	twemproxy := &Twemproxy{
 		Instances: []TwemproxyInstance{
 			TwemproxyInstance{
-				StatsAddr: sampleStatsAddr,
+				Addr:  sampleAddr,
-				Pools:     []string{"demo"},
+				Pools: []string{"demo"},
 			},
 		},
 	}
@@ -104,7 +104,7 @@ func TestGather(t *testing.T) {
 
 	metrics := []string{"total_connections", "curr_connections", "timestamp"}
 	tags := map[string]string{
-		"twemproxy": sampleStatsAddr,
+		"twemproxy": sampleAddr,
 		"source":    sourceData["source"].(string),
 	}
 	for _, m := range metrics {