telegraf/plugins/inputs/twemproxy/twemproxy_test.go

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package twemproxy
import (
"encoding/json"
"net"
"testing"
"github.com/influxdb/telegraf/testutil"
"github.com/stretchr/testify/require"
)
const sampleAddr = "127.0.0.1:22222"
const sampleStats = `{
"total_connections": 276448,
"uptime": 160657,
"version": "0.4.1",
"service": "nutcracker",
"curr_connections": 1322,
"source": "server1.website.com",
"demo": {
"client_connections": 1305,
"forward_error": 11684,
"client_err": 147942,
"server_ejects": 0,
"fragments": 0,
"client_eof": 126813,
"10.16.29.1:6379": {
"requests": 43604566,
"server_eof": 0,
"out_queue": 0,
"server_err": 0,
"out_queue_bytes": 0,
"in_queue": 0,
"server_timedout": 24,
"request_bytes": 2775840400,
"server_connections": 1,
"response_bytes": 7663182096,
"in_queue_bytes": 0,
"server_ejected_at": 0,
"responses": 43603900
},
"10.16.29.2:6379": {
"requests": 37870211,
"server_eof": 0,
"out_queue": 0,
"server_err": 0,
"out_queue_bytes": 0,
"in_queue": 0,
"server_timedout": 25,
"request_bytes": 2412114759,
"server_connections": 1,
"response_bytes": 5228980582,
"in_queue_bytes": 0,
"server_ejected_at": 0,
"responses": 37869551
}
},
"timestamp": 1447312436
}`
func mockTwemproxyServer() (net.Listener, error) {
listener, err := net.Listen("tcp", sampleAddr)
if err != nil {
return nil, err
}
go func(l net.Listener) {
for {
conn, _ := l.Accept()
conn.Write([]byte(sampleStats))
conn.Close()
break
}
}(listener)
return listener, nil
}
func TestGather(t *testing.T) {
mockServer, err := mockTwemproxyServer()
if err != nil {
panic(err)
}
defer mockServer.Close()
twemproxy := &Twemproxy{
Addr: sampleAddr,
Pools: []string{"demo"},
}
var acc testutil.Accumulator
acc.SetDebug(true)
err = twemproxy.Gather(&acc)
require.NoError(t, err)
var sourceData map[string]interface{}
if err := json.Unmarshal([]byte(sampleStats), &sourceData); err != nil {
panic(err)
}
fields := map[string]interface{}{
"total_connections": float64(276448),
"curr_connections": float64(1322),
"timestamp": float64(1.447312436e+09),
}
tags := map[string]string{
"twemproxy": sampleAddr,
"source": sourceData["source"].(string),
}
acc.AssertContainsTaggedFields(t, "twemproxy", fields, tags)
poolName := "demo"
poolFields := map[string]interface{}{
"client_connections": float64(1305),
"client_eof": float64(126813),
"client_err": float64(147942),
"forward_error": float64(11684),
"fragments": float64(0),
"server_ejects": float64(0),
}
tags["pool"] = poolName
acc.AssertContainsTaggedFields(t, "twemproxy_pool", poolFields, tags)
poolServerTags1 := map[string]string{
"pool": "demo",
"server": "10.16.29.2:6379",
"source": "server1.website.com",
"twemproxy": "127.0.0.1:22222",
}
poolServerFields1 := map[string]interface{}{
"in_queue": float64(0),
"in_queue_bytes": float64(0),
"out_queue": float64(0),
"out_queue_bytes": float64(0),
"request_bytes": float64(2.412114759e+09),
"requests": float64(3.7870211e+07),
"response_bytes": float64(5.228980582e+09),
"responses": float64(3.7869551e+07),
"server_connections": float64(1),
"server_ejected_at": float64(0),
"server_eof": float64(0),
"server_err": float64(0),
"server_timedout": float64(25),
}
acc.AssertContainsTaggedFields(t, "twemproxy_pool_server",
poolServerFields1, poolServerTags1)
poolServerTags2 := map[string]string{
"pool": "demo",
"server": "10.16.29.1:6379",
"source": "server1.website.com",
"twemproxy": "127.0.0.1:22222",
}
poolServerFields2 := map[string]interface{}{
"in_queue": float64(0),
"in_queue_bytes": float64(0),
"out_queue": float64(0),
"out_queue_bytes": float64(0),
"request_bytes": float64(2.7758404e+09),
"requests": float64(4.3604566e+07),
"response_bytes": float64(7.663182096e+09),
"responses": float64(4.36039e+07),
"server_connections": float64(1),
"server_ejected_at": float64(0),
"server_eof": float64(0),
"server_err": float64(0),
"server_timedout": float64(24),
}
acc.AssertContainsTaggedFields(t, "twemproxy_pool_server",
poolServerFields2, poolServerTags2)
}