forked from mirror/client_golang
536 lines
15 KiB
Go
536 lines
15 KiB
Go
// Copyright 2014 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package prometheus
|
|
|
|
import (
|
|
"fmt"
|
|
"testing"
|
|
|
|
dto "github.com/prometheus/client_model/go"
|
|
)
|
|
|
|
func TestDelete(t *testing.T) {
|
|
vec := NewGaugeVec(
|
|
GaugeOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"l1", "l2"},
|
|
)
|
|
testDelete(t, vec)
|
|
}
|
|
|
|
func TestDeleteWithCollisions(t *testing.T) {
|
|
vec := NewGaugeVec(
|
|
GaugeOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"l1", "l2"},
|
|
)
|
|
vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
|
|
vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
|
|
testDelete(t, vec)
|
|
}
|
|
|
|
func testDelete(t *testing.T, vec *GaugeVec) {
|
|
if got, want := vec.Delete(Labels{"l1": "v1", "l2": "v2"}), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
|
|
vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
|
|
if got, want := vec.Delete(Labels{"l1": "v1", "l2": "v2"}), true; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
if got, want := vec.Delete(Labels{"l1": "v1", "l2": "v2"}), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
|
|
vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
|
|
if got, want := vec.Delete(Labels{"l2": "v2", "l1": "v1"}), true; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
if got, want := vec.Delete(Labels{"l2": "v2", "l1": "v1"}), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
|
|
vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
|
|
if got, want := vec.Delete(Labels{"l2": "v1", "l1": "v2"}), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
if got, want := vec.Delete(Labels{"l1": "v1"}), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestDeleteLabelValues(t *testing.T) {
|
|
vec := NewGaugeVec(
|
|
GaugeOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"l1", "l2"},
|
|
)
|
|
testDeleteLabelValues(t, vec)
|
|
}
|
|
|
|
func TestDeleteLabelValuesWithCollisions(t *testing.T) {
|
|
vec := NewGaugeVec(
|
|
GaugeOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"l1", "l2"},
|
|
)
|
|
vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
|
|
vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
|
|
testDeleteLabelValues(t, vec)
|
|
}
|
|
|
|
func testDeleteLabelValues(t *testing.T, vec *GaugeVec) {
|
|
if got, want := vec.DeleteLabelValues("v1", "v2"), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
|
|
vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
|
|
vec.With(Labels{"l1": "v1", "l2": "v3"}).(Gauge).Set(42) // Add junk data for collision.
|
|
if got, want := vec.DeleteLabelValues("v1", "v2"), true; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
if got, want := vec.DeleteLabelValues("v1", "v2"), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
if got, want := vec.DeleteLabelValues("v1", "v3"), true; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
|
|
vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
|
|
// Delete out of order.
|
|
if got, want := vec.DeleteLabelValues("v2", "v1"), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
if got, want := vec.DeleteLabelValues("v1"), false; got != want {
|
|
t.Errorf("got %v, want %v", got, want)
|
|
}
|
|
}
|
|
|
|
func TestMetricVec(t *testing.T) {
|
|
vec := NewGaugeVec(
|
|
GaugeOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"l1", "l2"},
|
|
)
|
|
testMetricVec(t, vec)
|
|
}
|
|
|
|
func TestMetricVecWithCollisions(t *testing.T) {
|
|
vec := NewGaugeVec(
|
|
GaugeOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"l1", "l2"},
|
|
)
|
|
vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
|
|
vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
|
|
testMetricVec(t, vec)
|
|
}
|
|
|
|
func testMetricVec(t *testing.T, vec *GaugeVec) {
|
|
vec.Clear() // Actually test Clear now!
|
|
|
|
var pair [2]string
|
|
// Keep track of metrics.
|
|
expected := map[[2]string]int{}
|
|
|
|
for i := 0; i < 1000; i++ {
|
|
pair[0], pair[1] = fmt.Sprint(i%4), fmt.Sprint(i%5) // Varying combinations multiples.
|
|
expected[pair]++
|
|
vec.WithLabelValues(pair[0], pair[1]).Inc()
|
|
|
|
expected[[2]string{"v1", "v2"}]++
|
|
vec.WithLabelValues("v1", "v2").(Gauge).Inc()
|
|
}
|
|
|
|
var total int
|
|
for _, metrics := range vec.metricMap.metrics {
|
|
for _, metric := range metrics {
|
|
total++
|
|
copy(pair[:], metric.values)
|
|
|
|
var metricOut dto.Metric
|
|
if err := metric.metric.Write(&metricOut); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
actual := *metricOut.Gauge.Value
|
|
|
|
var actualPair [2]string
|
|
for i, label := range metricOut.Label {
|
|
actualPair[i] = *label.Value
|
|
}
|
|
|
|
// Test output pair against metric.values to ensure we've selected
|
|
// the right one. We check this to ensure the below check means
|
|
// anything at all.
|
|
if actualPair != pair {
|
|
t.Fatalf("unexpected pair association in metric map: %v != %v", actualPair, pair)
|
|
}
|
|
|
|
if actual != float64(expected[pair]) {
|
|
t.Fatalf("incorrect counter value for %v: %v != %v", pair, actual, expected[pair])
|
|
}
|
|
}
|
|
}
|
|
|
|
if total != len(expected) {
|
|
t.Fatalf("unexpected number of metrics: %v != %v", total, len(expected))
|
|
}
|
|
|
|
vec.Clear()
|
|
|
|
if len(vec.metricMap.metrics) > 0 {
|
|
t.Fatalf("reset failed")
|
|
}
|
|
}
|
|
|
|
func TestCounterVecEndToEndWithCollision(t *testing.T) {
|
|
vec := NewCounterVec(
|
|
CounterOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"labelname"},
|
|
)
|
|
vec.WithLabelValues("77kepQFQ8Kl").Inc()
|
|
vec.WithLabelValues("!0IC=VloaY").Add(2)
|
|
|
|
m := &dto.Metric{}
|
|
if err := vec.WithLabelValues("77kepQFQ8Kl").Write(m); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if got, want := m.GetLabel()[0].GetValue(), "77kepQFQ8Kl"; got != want {
|
|
t.Errorf("got label value %q, want %q", got, want)
|
|
}
|
|
if got, want := m.GetCounter().GetValue(), 1.; got != want {
|
|
t.Errorf("got value %f, want %f", got, want)
|
|
}
|
|
m.Reset()
|
|
if err := vec.WithLabelValues("!0IC=VloaY").Write(m); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if got, want := m.GetLabel()[0].GetValue(), "!0IC=VloaY"; got != want {
|
|
t.Errorf("got label value %q, want %q", got, want)
|
|
}
|
|
if got, want := m.GetCounter().GetValue(), 2.; got != want {
|
|
t.Errorf("got value %f, want %f", got, want)
|
|
}
|
|
}
|
|
|
|
func TestCurryVec(t *testing.T) {
|
|
vec := NewCounterVec(
|
|
CounterOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"one", "two", "three"},
|
|
)
|
|
testCurryVec(t, vec)
|
|
}
|
|
|
|
func TestCurryVecWithCollisions(t *testing.T) {
|
|
vec := NewCounterVec(
|
|
CounterOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
[]string{"one", "two", "three"},
|
|
)
|
|
vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
|
|
vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
|
|
testCurryVec(t, vec)
|
|
}
|
|
|
|
func testCurryVec(t *testing.T, vec *CounterVec) {
|
|
|
|
assertMetrics := func(t *testing.T) {
|
|
n := 0
|
|
for _, m := range vec.metricMap.metrics {
|
|
n += len(m)
|
|
}
|
|
if n != 2 {
|
|
t.Error("expected two metrics, got", n)
|
|
}
|
|
m := &dto.Metric{}
|
|
c1, err := vec.GetMetricWithLabelValues("1", "2", "3")
|
|
if err != nil {
|
|
t.Fatal("unexpected error getting metric:", err)
|
|
}
|
|
c1.Write(m)
|
|
if want, got := 1., m.GetCounter().GetValue(); want != got {
|
|
t.Errorf("want %f as counter value, got %f", want, got)
|
|
}
|
|
m.Reset()
|
|
c2, err := vec.GetMetricWithLabelValues("11", "22", "33")
|
|
if err != nil {
|
|
t.Fatal("unexpected error getting metric:", err)
|
|
}
|
|
c2.Write(m)
|
|
if want, got := 1., m.GetCounter().GetValue(); want != got {
|
|
t.Errorf("want %f as counter value, got %f", want, got)
|
|
}
|
|
}
|
|
|
|
assertNoMetric := func(t *testing.T) {
|
|
if n := len(vec.metricMap.metrics); n != 0 {
|
|
t.Error("expected no metrics, got", n)
|
|
}
|
|
}
|
|
|
|
t.Run("zero labels", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(nil)
|
|
c2 := vec.MustCurryWith(nil)
|
|
c1.WithLabelValues("1", "2", "3").Inc()
|
|
c2.With(Labels{"one": "11", "two": "22", "three": "33"}).Inc()
|
|
assertMetrics(t)
|
|
if !c1.Delete(Labels{"one": "1", "two": "2", "three": "3"}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
if !c2.DeleteLabelValues("11", "22", "33") {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("first label", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(Labels{"one": "1"})
|
|
c2 := vec.MustCurryWith(Labels{"one": "11"})
|
|
c1.WithLabelValues("2", "3").Inc()
|
|
c2.With(Labels{"two": "22", "three": "33"}).Inc()
|
|
assertMetrics(t)
|
|
if c1.Delete(Labels{"two": "22", "three": "33"}) {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if c2.DeleteLabelValues("2", "3") {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if !c1.Delete(Labels{"two": "2", "three": "3"}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
if !c2.DeleteLabelValues("22", "33") {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("middle label", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(Labels{"two": "2"})
|
|
c2 := vec.MustCurryWith(Labels{"two": "22"})
|
|
c1.WithLabelValues("1", "3").Inc()
|
|
c2.With(Labels{"one": "11", "three": "33"}).Inc()
|
|
assertMetrics(t)
|
|
if c1.Delete(Labels{"one": "11", "three": "33"}) {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if c2.DeleteLabelValues("1", "3") {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if !c1.Delete(Labels{"one": "1", "three": "3"}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
if !c2.DeleteLabelValues("11", "33") {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("last label", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(Labels{"three": "3"})
|
|
c2 := vec.MustCurryWith(Labels{"three": "33"})
|
|
c1.WithLabelValues("1", "2").Inc()
|
|
c2.With(Labels{"one": "11", "two": "22"}).Inc()
|
|
assertMetrics(t)
|
|
if c1.Delete(Labels{"two": "22", "one": "11"}) {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if c2.DeleteLabelValues("1", "2") {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if !c1.Delete(Labels{"two": "2", "one": "1"}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
if !c2.DeleteLabelValues("11", "22") {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("two labels", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(Labels{"three": "3", "one": "1"})
|
|
c2 := vec.MustCurryWith(Labels{"three": "33", "one": "11"})
|
|
c1.WithLabelValues("2").Inc()
|
|
c2.With(Labels{"two": "22"}).Inc()
|
|
assertMetrics(t)
|
|
if c1.Delete(Labels{"two": "22"}) {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if c2.DeleteLabelValues("2") {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if !c1.Delete(Labels{"two": "2"}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
if !c2.DeleteLabelValues("22") {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("all labels", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(Labels{"three": "3", "two": "2", "one": "1"})
|
|
c2 := vec.MustCurryWith(Labels{"three": "33", "one": "11", "two": "22"})
|
|
c1.WithLabelValues().Inc()
|
|
c2.With(nil).Inc()
|
|
assertMetrics(t)
|
|
if !c1.Delete(Labels{}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
if !c2.DeleteLabelValues() {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("double curry", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(Labels{"three": "3"}).MustCurryWith(Labels{"one": "1"})
|
|
c2 := vec.MustCurryWith(Labels{"three": "33"}).MustCurryWith(Labels{"one": "11"})
|
|
c1.WithLabelValues("2").Inc()
|
|
c2.With(Labels{"two": "22"}).Inc()
|
|
assertMetrics(t)
|
|
if c1.Delete(Labels{"two": "22"}) {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if c2.DeleteLabelValues("2") {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if !c1.Delete(Labels{"two": "2"}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
if !c2.DeleteLabelValues("22") {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("use already curried label", func(t *testing.T) {
|
|
c1 := vec.MustCurryWith(Labels{"three": "3"})
|
|
if _, err := c1.GetMetricWithLabelValues("1", "2", "3"); err == nil {
|
|
t.Error("expected error when using already curried label")
|
|
}
|
|
if _, err := c1.GetMetricWith(Labels{"one": "1", "two": "2", "three": "3"}); err == nil {
|
|
t.Error("expected error when using already curried label")
|
|
}
|
|
assertNoMetric(t)
|
|
c1.WithLabelValues("1", "2").Inc()
|
|
if c1.Delete(Labels{"one": "1", "two": "2", "three": "3"}) {
|
|
t.Error("deletion unexpectedly succeeded")
|
|
}
|
|
if !c1.Delete(Labels{"one": "1", "two": "2"}) {
|
|
t.Error("deletion failed")
|
|
}
|
|
assertNoMetric(t)
|
|
})
|
|
t.Run("curry already curried label", func(t *testing.T) {
|
|
if _, err := vec.MustCurryWith(Labels{"three": "3"}).CurryWith(Labels{"three": "33"}); err == nil {
|
|
t.Error("currying unexpectedly succeeded")
|
|
} else if err.Error() != `label name "three" is already curried` {
|
|
t.Error("currying returned unexpected error:", err)
|
|
}
|
|
|
|
})
|
|
t.Run("unknown label", func(t *testing.T) {
|
|
if _, err := vec.CurryWith(Labels{"foo": "bar"}); err == nil {
|
|
t.Error("currying unexpectedly succeeded")
|
|
} else if err.Error() != "1 unknown label(s) found during currying" {
|
|
t.Error("currying returned unexpected error:", err)
|
|
}
|
|
})
|
|
}
|
|
|
|
func BenchmarkMetricVecWithLabelValuesBasic(b *testing.B) {
|
|
benchmarkMetricVecWithLabelValues(b, map[string][]string{
|
|
"l1": {"onevalue"},
|
|
"l2": {"twovalue"},
|
|
})
|
|
}
|
|
|
|
func BenchmarkMetricVecWithLabelValues2Keys10ValueCardinality(b *testing.B) {
|
|
benchmarkMetricVecWithLabelValuesCardinality(b, 2, 10)
|
|
}
|
|
|
|
func BenchmarkMetricVecWithLabelValues4Keys10ValueCardinality(b *testing.B) {
|
|
benchmarkMetricVecWithLabelValuesCardinality(b, 4, 10)
|
|
}
|
|
|
|
func BenchmarkMetricVecWithLabelValues2Keys100ValueCardinality(b *testing.B) {
|
|
benchmarkMetricVecWithLabelValuesCardinality(b, 2, 100)
|
|
}
|
|
|
|
func BenchmarkMetricVecWithLabelValues10Keys100ValueCardinality(b *testing.B) {
|
|
benchmarkMetricVecWithLabelValuesCardinality(b, 10, 100)
|
|
}
|
|
|
|
func BenchmarkMetricVecWithLabelValues10Keys1000ValueCardinality(b *testing.B) {
|
|
benchmarkMetricVecWithLabelValuesCardinality(b, 10, 1000)
|
|
}
|
|
|
|
func benchmarkMetricVecWithLabelValuesCardinality(b *testing.B, nkeys, nvalues int) {
|
|
labels := map[string][]string{}
|
|
|
|
for i := 0; i < nkeys; i++ {
|
|
var (
|
|
k = fmt.Sprintf("key-%v", i)
|
|
vs = make([]string, 0, nvalues)
|
|
)
|
|
for j := 0; j < nvalues; j++ {
|
|
vs = append(vs, fmt.Sprintf("value-%v", j))
|
|
}
|
|
labels[k] = vs
|
|
}
|
|
|
|
benchmarkMetricVecWithLabelValues(b, labels)
|
|
}
|
|
|
|
func benchmarkMetricVecWithLabelValues(b *testing.B, labels map[string][]string) {
|
|
var keys []string
|
|
for k := range labels { // Map order dependent, who cares though.
|
|
keys = append(keys, k)
|
|
}
|
|
|
|
values := make([]string, len(labels)) // Value cache for permutations.
|
|
vec := NewGaugeVec(
|
|
GaugeOpts{
|
|
Name: "test",
|
|
Help: "helpless",
|
|
},
|
|
keys,
|
|
)
|
|
|
|
b.ReportAllocs()
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
// Varies input across provide map entries based on key size.
|
|
for j, k := range keys {
|
|
candidates := labels[k]
|
|
values[j] = candidates[i%len(candidates)]
|
|
}
|
|
|
|
vec.WithLabelValues(values...)
|
|
}
|
|
}
|