telegraf/plugins/inputs/powerdns/powerdns_test.go

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2016-01-29 14:53:50 +00:00
package powerdns
import (
"crypto/rand"
"encoding/binary"
"fmt"
"net"
"testing"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type statServer struct{}
var metrics = "corrupt-packets=0,deferred-cache-inserts=0,deferred-cache-lookup=0," +
"dnsupdate-answers=0,dnsupdate-changes=0,dnsupdate-queries=0," +
"dnsupdate-refused=0,packetcache-hit=0,packetcache-miss=1,packetcache-size=0," +
"query-cache-hit=0,query-cache-miss=6,rd-queries=1,recursing-answers=0," +
"recursing-questions=0,recursion-unanswered=0,security-status=3," +
"servfail-packets=0,signatures=0,tcp-answers=0,tcp-queries=0," +
"timedout-packets=0,udp-answers=1,udp-answers-bytes=50,udp-do-queries=0," +
"udp-queries=0,udp4-answers=1,udp4-queries=1,udp6-answers=0,udp6-queries=0," +
"key-cache-size=0,latency=26,meta-cache-size=0,qsize-q=0," +
"signature-cache-size=0,sys-msec=2889,uptime=86317,user-msec=2167,"
func (s statServer) serverSocket(l net.Listener) {
for {
conn, err := l.Accept()
if err != nil {
return
}
go func(c net.Conn) {
buf := make([]byte, 1024)
n, _ := c.Read(buf)
data := buf[:n]
if string(data) == "show * \n" {
c.Write([]byte(metrics))
c.Close()
}
}(conn)
}
}
func TestMemcachedGeneratesMetrics(t *testing.T) {
// We create a fake server to return test data
var randomNumber int64
binary.Read(rand.Reader, binary.LittleEndian, &randomNumber)
socket, err := net.Listen("unix", fmt.Sprintf("/tmp/pdns%d.controlsocket", randomNumber))
if err != nil {
t.Fatal("Cannot initalize server on port ")
}
defer socket.Close()
s := statServer{}
go s.serverSocket(socket)
p := &Powerdns{
UnixSockets: []string{fmt.Sprintf("/tmp/pdns%d.controlsocket", randomNumber)},
}
var acc testutil.Accumulator
err = p.Gather(&acc)
require.NoError(t, err)
intMetrics := []string{"corrupt-packets", "deferred-cache-inserts",
"deferred-cache-lookup", "dnsupdate-answers", "dnsupdate-changes",
"dnsupdate-queries", "dnsupdate-refused", "packetcache-hit",
"packetcache-miss", "packetcache-size", "query-cache-hit", "query-cache-miss",
"rd-queries", "recursing-answers", "recursing-questions",
"recursion-unanswered", "security-status", "servfail-packets", "signatures",
"tcp-answers", "tcp-queries", "timedout-packets", "udp-answers",
"udp-answers-bytes", "udp-do-queries", "udp-queries", "udp4-answers",
"udp4-queries", "udp6-answers", "udp6-queries", "key-cache-size", "latency",
"meta-cache-size", "qsize-q", "signature-cache-size", "sys-msec", "uptime", "user-msec"}
for _, metric := range intMetrics {
assert.True(t, acc.HasIntField("powerdns", metric), metric)
}
}
func TestPowerdnsParseMetrics(t *testing.T) {
values, err := parseResponse(metrics)
require.NoError(t, err, "Error parsing memcached response")
tests := []struct {
key string
value int64
}{
{"corrupt-packets", 0},
{"deferred-cache-inserts", 0},
{"deferred-cache-lookup", 0},
{"dnsupdate-answers", 0},
{"dnsupdate-changes", 0},
{"dnsupdate-queries", 0},
{"dnsupdate-refused", 0},
{"packetcache-hit", 0},
{"packetcache-miss", 1},
{"packetcache-size", 0},
{"query-cache-hit", 0},
{"query-cache-miss", 6},
{"rd-queries", 1},
{"recursing-answers", 0},
{"recursing-questions", 0},
{"recursion-unanswered", 0},
{"security-status", 3},
{"servfail-packets", 0},
{"signatures", 0},
{"tcp-answers", 0},
{"tcp-queries", 0},
{"timedout-packets", 0},
{"udp-answers", 1},
{"udp-answers-bytes", 50},
{"udp-do-queries", 0},
{"udp-queries", 0},
{"udp4-answers", 1},
{"udp4-queries", 1},
{"udp6-answers", 0},
{"udp6-queries", 0},
{"key-cache-size", 0},
{"latency", 26},
{"meta-cache-size", 0},
{"qsize-q", 0},
{"signature-cache-size", 0},
{"sys-msec", 2889},
{"uptime", 86317},
{"user-msec", 2167},
}
for _, test := range tests {
value, ok := values[test.key]
if !ok {
t.Errorf("Did not find key for metric %s in values", test.key)
continue
}
if value != test.value {
t.Errorf("Metric: %s, Expected: %d, actual: %d",
test.key, test.value, value)
}
}
}