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|
package metrics
import (
"bufio"
"bytes"
"net"
"net/url"
"strings"
"testing"
"time"
)
func TestStatsd_Flatten(t *testing.T) {
s := &StatsdSink{}
flat := s.flattenKey([]string{"a", "b", "c", "d"})
if flat != "a.b.c.d" {
t.Fatalf("Bad flat")
}
}
func TestStatsd_PushFullQueue(t *testing.T) {
q := make(chan string, 1)
q <- "full"
s := &StatsdSink{metricQueue: q}
s.pushMetric("omit")
out := <-q
if out != "full" {
t.Fatalf("bad val %v", out)
}
select {
case v := <-q:
t.Fatalf("bad val %v", v)
default:
}
}
func TestStatsd_Conn(t *testing.T) {
addr := "127.0.0.1:7524"
done := make(chan bool)
go func() {
list, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 7524})
if err != nil {
panic(err)
}
defer list.Close()
buf := make([]byte, 1500)
n, err := list.Read(buf)
if err != nil {
panic(err)
}
buf = buf[:n]
reader := bufio.NewReader(bytes.NewReader(buf))
line, err := reader.ReadString('\n')
if err != nil {
t.Fatalf("unexpected err %s", err)
}
if line != "gauge.val:1.000000|g\n" {
t.Fatalf("bad line %s", line)
}
line, err = reader.ReadString('\n')
if err != nil {
t.Fatalf("unexpected err %s", err)
}
if line != "key.other:2.000000|kv\n" {
t.Fatalf("bad line %s", line)
}
line, err = reader.ReadString('\n')
if err != nil {
t.Fatalf("unexpected err %s", err)
}
if line != "counter.me:3.000000|c\n" {
t.Fatalf("bad line %s", line)
}
line, err = reader.ReadString('\n')
if err != nil {
t.Fatalf("unexpected err %s", err)
}
if line != "sample.slow_thingy:4.000000|ms\n" {
t.Fatalf("bad line %s", line)
}
done <- true
}()
s, err := NewStatsdSink(addr)
if err != nil {
t.Fatalf("bad error")
}
s.SetGauge([]string{"gauge", "val"}, float32(1))
s.EmitKey([]string{"key", "other"}, float32(2))
s.IncrCounter([]string{"counter", "me"}, float32(3))
s.AddSample([]string{"sample", "slow thingy"}, float32(4))
select {
case <-done:
s.Shutdown()
case <-time.After(3 * time.Second):
t.Fatalf("timeout")
}
}
func TestNewStatsdSinkFromURL(t *testing.T) {
for _, tc := range []struct {
desc string
input string
expectErr string
expectAddr string
}{
{
desc: "address is populated",
input: "statsd://statsd.service.consul",
expectAddr: "statsd.service.consul",
},
{
desc: "address includes port",
input: "statsd://statsd.service.consul:1234",
expectAddr: "statsd.service.consul:1234",
},
} {
t.Run(tc.desc, func(t *testing.T) {
u, err := url.Parse(tc.input)
if err != nil {
t.Fatalf("error parsing URL: %s", err)
}
ms, err := NewStatsdSinkFromURL(u)
if tc.expectErr != "" {
if !strings.Contains(err.Error(), tc.expectErr) {
t.Fatalf("expected err: %q, to contain: %q", err, tc.expectErr)
}
} else {
if err != nil {
t.Fatalf("unexpected err: %s", err)
}
is := ms.(*StatsdSink)
if is.addr != tc.expectAddr {
t.Fatalf("expected addr %s, got: %s", tc.expectAddr, is.addr)
}
}
})
}
}
|
