309 lines
7.9 KiB
Go
309 lines
7.9 KiB
Go
![]() |
package graphite
|
||
|
|
||
|
import (
|
||
|
"bufio"
|
||
|
"bytes"
|
||
|
"io"
|
||
|
"log"
|
||
|
"net"
|
||
|
"os"
|
||
|
"regexp"
|
||
|
"testing"
|
||
|
"time"
|
||
|
|
||
|
"github.com/prometheus/common/model"
|
||
|
"golang.org/x/net/context"
|
||
|
|
||
|
"github.com/prometheus/client_golang/prometheus"
|
||
|
)
|
||
|
|
||
|
func TestSanitize(t *testing.T) {
|
||
|
testCases := []struct {
|
||
|
in, out string
|
||
|
}{
|
||
|
{in: "hello", out: "hello"},
|
||
|
{in: "hE/l1o", out: "hE_l1o"},
|
||
|
{in: "he,*ll(.o", out: "he_ll_o"},
|
||
|
{in: "hello_there%^&", out: "hello_there_"},
|
||
|
}
|
||
|
|
||
|
var buf bytes.Buffer
|
||
|
w := bufio.NewWriter(&buf)
|
||
|
|
||
|
for i, tc := range testCases {
|
||
|
if err := writeSanitized(w, tc.in); err != nil {
|
||
|
t.Fatalf("write failed: %v", err)
|
||
|
}
|
||
|
if err := w.Flush(); err != nil {
|
||
|
t.Fatalf("flush failed: %v", err)
|
||
|
}
|
||
|
|
||
|
if want, got := tc.out, buf.String(); want != got {
|
||
|
t.Fatalf("test case index %d: got sanitized string %s, want %s", i, got, want)
|
||
|
}
|
||
|
|
||
|
buf.Reset()
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestWriteSummary(t *testing.T) {
|
||
|
sumVec := prometheus.NewSummaryVec(
|
||
|
prometheus.SummaryOpts{
|
||
|
Name: "name",
|
||
|
Help: "docstring",
|
||
|
ConstLabels: prometheus.Labels{"constname": "constvalue"},
|
||
|
},
|
||
|
[]string{"labelname"},
|
||
|
)
|
||
|
|
||
|
sumVec.WithLabelValues("val1").Observe(float64(10))
|
||
|
sumVec.WithLabelValues("val1").Observe(float64(20))
|
||
|
sumVec.WithLabelValues("val1").Observe(float64(30))
|
||
|
sumVec.WithLabelValues("val2").Observe(float64(20))
|
||
|
sumVec.WithLabelValues("val2").Observe(float64(30))
|
||
|
sumVec.WithLabelValues("val2").Observe(float64(40))
|
||
|
|
||
|
reg := prometheus.NewRegistry()
|
||
|
reg.MustRegister(sumVec)
|
||
|
|
||
|
mfs, err := reg.Gather()
|
||
|
if err != nil {
|
||
|
t.Fatalf("error: %v", err)
|
||
|
}
|
||
|
|
||
|
now := model.Time(1477043083)
|
||
|
var buf bytes.Buffer
|
||
|
err = writeMetrics(&buf, mfs, "prefix", now)
|
||
|
if err != nil {
|
||
|
t.Fatalf("error: %v", err)
|
||
|
}
|
||
|
|
||
|
want := `prefix.name.constname.constvalue.labelname.val1.quantile.0_5 20 1477043
|
||
|
prefix.name.constname.constvalue.labelname.val1.quantile.0_9 30 1477043
|
||
|
prefix.name.constname.constvalue.labelname.val1.quantile.0_99 30 1477043
|
||
|
prefix.name_sum.constname.constvalue.labelname.val1 60 1477043
|
||
|
prefix.name_count.constname.constvalue.labelname.val1 3 1477043
|
||
|
prefix.name.constname.constvalue.labelname.val2.quantile.0_5 30 1477043
|
||
|
prefix.name.constname.constvalue.labelname.val2.quantile.0_9 40 1477043
|
||
|
prefix.name.constname.constvalue.labelname.val2.quantile.0_99 40 1477043
|
||
|
prefix.name_sum.constname.constvalue.labelname.val2 90 1477043
|
||
|
prefix.name_count.constname.constvalue.labelname.val2 3 1477043
|
||
|
`
|
||
|
|
||
|
if got := buf.String(); want != got {
|
||
|
t.Fatalf("wanted \n%s\n, got \n%s\n", want, got)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestWriteHistogram(t *testing.T) {
|
||
|
histVec := prometheus.NewHistogramVec(
|
||
|
prometheus.HistogramOpts{
|
||
|
Name: "name",
|
||
|
Help: "docstring",
|
||
|
ConstLabels: prometheus.Labels{"constname": "constvalue"},
|
||
|
Buckets: []float64{0.01, 0.02, 0.05, 0.1},
|
||
|
},
|
||
|
[]string{"labelname"},
|
||
|
)
|
||
|
|
||
|
histVec.WithLabelValues("val1").Observe(float64(10))
|
||
|
histVec.WithLabelValues("val1").Observe(float64(20))
|
||
|
histVec.WithLabelValues("val1").Observe(float64(30))
|
||
|
histVec.WithLabelValues("val2").Observe(float64(20))
|
||
|
histVec.WithLabelValues("val2").Observe(float64(30))
|
||
|
histVec.WithLabelValues("val2").Observe(float64(40))
|
||
|
|
||
|
reg := prometheus.NewRegistry()
|
||
|
reg.MustRegister(histVec)
|
||
|
|
||
|
mfs, err := reg.Gather()
|
||
|
if err != nil {
|
||
|
t.Fatalf("error: %v", err)
|
||
|
}
|
||
|
|
||
|
now := model.Time(1477043083)
|
||
|
var buf bytes.Buffer
|
||
|
err = writeMetrics(&buf, mfs, "prefix", now)
|
||
|
if err != nil {
|
||
|
t.Fatalf("error: %v", err)
|
||
|
}
|
||
|
|
||
|
want := `prefix.name_bucket.constname.constvalue.labelname.val1.le.0_01 0 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val1.le.0_02 0 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val1.le.0_05 0 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val1.le.0_1 0 1477043
|
||
|
prefix.name_sum.constname.constvalue.labelname.val1 60 1477043
|
||
|
prefix.name_count.constname.constvalue.labelname.val1 3 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val1.le._Inf 3 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val2.le.0_01 0 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val2.le.0_02 0 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val2.le.0_05 0 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val2.le.0_1 0 1477043
|
||
|
prefix.name_sum.constname.constvalue.labelname.val2 90 1477043
|
||
|
prefix.name_count.constname.constvalue.labelname.val2 3 1477043
|
||
|
prefix.name_bucket.constname.constvalue.labelname.val2.le._Inf 3 1477043
|
||
|
`
|
||
|
if got := buf.String(); want != got {
|
||
|
t.Fatalf("wanted \n%s\n, got \n%s\n", want, got)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestToReader(t *testing.T) {
|
||
|
cntVec := prometheus.NewCounterVec(
|
||
|
prometheus.CounterOpts{
|
||
|
Name: "name",
|
||
|
Help: "docstring",
|
||
|
ConstLabels: prometheus.Labels{"constname": "constvalue"},
|
||
|
},
|
||
|
[]string{"labelname"},
|
||
|
)
|
||
|
cntVec.WithLabelValues("val1").Inc()
|
||
|
cntVec.WithLabelValues("val2").Inc()
|
||
|
|
||
|
reg := prometheus.NewRegistry()
|
||
|
reg.MustRegister(cntVec)
|
||
|
|
||
|
want := `prefix.name.constname.constvalue.labelname.val1 1 1477043
|
||
|
prefix.name.constname.constvalue.labelname.val2 1 1477043
|
||
|
`
|
||
|
mfs, err := reg.Gather()
|
||
|
if err != nil {
|
||
|
t.Fatalf("error: %v", err)
|
||
|
}
|
||
|
|
||
|
now := model.Time(1477043083)
|
||
|
var buf bytes.Buffer
|
||
|
err = writeMetrics(&buf, mfs, "prefix", now)
|
||
|
if err != nil {
|
||
|
t.Fatalf("error: %v", err)
|
||
|
}
|
||
|
|
||
|
if got := buf.String(); want != got {
|
||
|
t.Fatalf("wanted \n%s\n, got \n%s\n", want, got)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func TestPush(t *testing.T) {
|
||
|
reg := prometheus.NewRegistry()
|
||
|
cntVec := prometheus.NewCounterVec(
|
||
|
prometheus.CounterOpts{
|
||
|
Name: "name",
|
||
|
Help: "docstring",
|
||
|
ConstLabels: prometheus.Labels{"constname": "constvalue"},
|
||
|
},
|
||
|
[]string{"labelname"},
|
||
|
)
|
||
|
cntVec.WithLabelValues("val1").Inc()
|
||
|
cntVec.WithLabelValues("val2").Inc()
|
||
|
reg.MustRegister(cntVec)
|
||
|
|
||
|
host := "localhost"
|
||
|
port := ":56789"
|
||
|
b, err := NewBridge(&Config{
|
||
|
URL: host + port,
|
||
|
Gatherer: reg,
|
||
|
Prefix: "prefix",
|
||
|
})
|
||
|
if err != nil {
|
||
|
t.Fatalf("error creating bridge: %v", err)
|
||
|
}
|
||
|
|
||
|
nmg, err := newMockGraphite(port)
|
||
|
if err != nil {
|
||
|
t.Fatalf("error creating mock graphite: %v", err)
|
||
|
}
|
||
|
defer nmg.Close()
|
||
|
|
||
|
err = b.Push()
|
||
|
if err != nil {
|
||
|
t.Fatalf("error pushing: %v", err)
|
||
|
}
|
||
|
|
||
|
wants := []string{
|
||
|
"prefix.name.constname.constvalue.labelname.val1 1",
|
||
|
"prefix.name.constname.constvalue.labelname.val2 1",
|
||
|
}
|
||
|
|
||
|
select {
|
||
|
case got := <-nmg.readc:
|
||
|
for _, want := range wants {
|
||
|
matched, err := regexp.MatchString(want, got)
|
||
|
if err != nil {
|
||
|
t.Fatalf("error pushing: %v", err)
|
||
|
}
|
||
|
if !matched {
|
||
|
t.Fatalf("missing metric:\nno match for %s received by server:\n%s", want, got)
|
||
|
}
|
||
|
}
|
||
|
return
|
||
|
case err := <-nmg.errc:
|
||
|
t.Fatalf("error reading push: %v", err)
|
||
|
case <-time.After(50 * time.Millisecond):
|
||
|
t.Fatalf("no result from graphite server")
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func newMockGraphite(port string) (*mockGraphite, error) {
|
||
|
readc := make(chan string)
|
||
|
errc := make(chan error)
|
||
|
ln, err := net.Listen("tcp", port)
|
||
|
if err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
go func() {
|
||
|
conn, err := ln.Accept()
|
||
|
if err != nil {
|
||
|
errc <- err
|
||
|
}
|
||
|
var b bytes.Buffer
|
||
|
io.Copy(&b, conn)
|
||
|
readc <- b.String()
|
||
|
}()
|
||
|
|
||
|
return &mockGraphite{
|
||
|
readc: readc,
|
||
|
errc: errc,
|
||
|
Listener: ln,
|
||
|
}, nil
|
||
|
}
|
||
|
|
||
|
type mockGraphite struct {
|
||
|
readc chan string
|
||
|
errc chan error
|
||
|
|
||
|
net.Listener
|
||
|
}
|
||
|
|
||
|
func ExampleBridge() {
|
||
|
b, err := NewBridge(&Config{
|
||
|
URL: "graphite.example.org:3099",
|
||
|
Gatherer: prometheus.DefaultGatherer,
|
||
|
Prefix: "prefix",
|
||
|
Interval: 15 * time.Second,
|
||
|
Timeout: 10 * time.Second,
|
||
|
ErrorHandling: AbortOnError,
|
||
|
Logger: log.New(os.Stdout, "graphite bridge: ", log.Lshortfile),
|
||
|
})
|
||
|
if err != nil {
|
||
|
panic(err)
|
||
|
}
|
||
|
|
||
|
go func() {
|
||
|
// Start something in a goroutine that uses metrics.
|
||
|
}()
|
||
|
|
||
|
// Push initial metrics to Graphite. Fail fast if the push fails.
|
||
|
if err := b.Push(); err != nil {
|
||
|
panic(err)
|
||
|
}
|
||
|
|
||
|
// Create a Context to control stopping the Run() loop that pushes
|
||
|
// metrics to Graphite.
|
||
|
ctx, cancel := context.WithCancel(context.Background())
|
||
|
defer cancel()
|
||
|
|
||
|
// Start pushing metrics to Graphite in the Run() loop.
|
||
|
b.Run(ctx)
|
||
|
}
|