315 lines
9.0 KiB
Go
315 lines
9.0 KiB
Go
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// Copyright 2014 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package model
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import (
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"runtime"
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"sync"
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"testing"
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)
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func TestLabelsToSignature(t *testing.T) {
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var scenarios = []struct {
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in map[string]string
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out uint64
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}{
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{
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in: map[string]string{},
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out: 14695981039346656037,
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},
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{
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in: map[string]string{"name": "garland, briggs", "fear": "love is not enough"},
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out: 5799056148416392346,
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},
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}
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for i, scenario := range scenarios {
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actual := LabelsToSignature(scenario.in)
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if actual != scenario.out {
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t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
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}
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}
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}
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func TestMetricToFingerprint(t *testing.T) {
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var scenarios = []struct {
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in LabelSet
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out Fingerprint
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}{
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{
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in: LabelSet{},
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out: 14695981039346656037,
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},
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{
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in: LabelSet{"name": "garland, briggs", "fear": "love is not enough"},
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out: 5799056148416392346,
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},
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}
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for i, scenario := range scenarios {
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actual := labelSetToFingerprint(scenario.in)
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if actual != scenario.out {
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t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
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}
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}
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}
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func TestMetricToFastFingerprint(t *testing.T) {
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var scenarios = []struct {
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in LabelSet
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out Fingerprint
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}{
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{
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in: LabelSet{},
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out: 14695981039346656037,
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},
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{
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in: LabelSet{"name": "garland, briggs", "fear": "love is not enough"},
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out: 12952432476264840823,
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},
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}
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for i, scenario := range scenarios {
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actual := labelSetToFastFingerprint(scenario.in)
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if actual != scenario.out {
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t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
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}
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}
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}
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func TestSignatureForLabels(t *testing.T) {
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var scenarios = []struct {
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in Metric
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labels LabelNames
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out uint64
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}{
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{
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in: Metric{},
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labels: nil,
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out: 14695981039346656037,
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},
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{
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in: Metric{},
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labels: LabelNames{"empty"},
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out: 7187873163539638612,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough"},
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labels: LabelNames{"empty"},
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out: 7187873163539638612,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough"},
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labels: LabelNames{"fear", "name"},
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out: 5799056148416392346,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough", "foo": "bar"},
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labels: LabelNames{"fear", "name"},
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out: 5799056148416392346,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough"},
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labels: LabelNames{},
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out: 14695981039346656037,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough"},
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labels: nil,
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out: 14695981039346656037,
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},
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}
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for i, scenario := range scenarios {
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actual := SignatureForLabels(scenario.in, scenario.labels...)
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if actual != scenario.out {
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t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
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}
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}
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}
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func TestSignatureWithoutLabels(t *testing.T) {
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var scenarios = []struct {
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in Metric
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labels map[LabelName]struct{}
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out uint64
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}{
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{
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in: Metric{},
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labels: nil,
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out: 14695981039346656037,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough"},
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labels: map[LabelName]struct{}{"fear": struct{}{}, "name": struct{}{}},
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out: 14695981039346656037,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough", "foo": "bar"},
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labels: map[LabelName]struct{}{"foo": struct{}{}},
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out: 5799056148416392346,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough"},
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labels: map[LabelName]struct{}{},
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out: 5799056148416392346,
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},
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{
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in: Metric{"name": "garland, briggs", "fear": "love is not enough"},
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labels: nil,
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out: 5799056148416392346,
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},
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}
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for i, scenario := range scenarios {
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actual := SignatureWithoutLabels(scenario.in, scenario.labels)
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if actual != scenario.out {
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t.Errorf("%d. expected %d, got %d", i, scenario.out, actual)
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}
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}
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}
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func benchmarkLabelToSignature(b *testing.B, l map[string]string, e uint64) {
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for i := 0; i < b.N; i++ {
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if a := LabelsToSignature(l); a != e {
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b.Fatalf("expected signature of %d for %s, got %d", e, l, a)
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}
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}
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}
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func BenchmarkLabelToSignatureScalar(b *testing.B) {
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benchmarkLabelToSignature(b, nil, 14695981039346656037)
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}
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func BenchmarkLabelToSignatureSingle(b *testing.B) {
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benchmarkLabelToSignature(b, map[string]string{"first-label": "first-label-value"}, 5146282821936882169)
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}
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func BenchmarkLabelToSignatureDouble(b *testing.B) {
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benchmarkLabelToSignature(b, map[string]string{"first-label": "first-label-value", "second-label": "second-label-value"}, 3195800080984914717)
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}
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func BenchmarkLabelToSignatureTriple(b *testing.B) {
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benchmarkLabelToSignature(b, map[string]string{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 13843036195897128121)
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}
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func benchmarkMetricToFingerprint(b *testing.B, ls LabelSet, e Fingerprint) {
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for i := 0; i < b.N; i++ {
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if a := labelSetToFingerprint(ls); a != e {
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b.Fatalf("expected signature of %d for %s, got %d", e, ls, a)
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}
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}
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}
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func BenchmarkMetricToFingerprintScalar(b *testing.B) {
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benchmarkMetricToFingerprint(b, nil, 14695981039346656037)
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}
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func BenchmarkMetricToFingerprintSingle(b *testing.B) {
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benchmarkMetricToFingerprint(b, LabelSet{"first-label": "first-label-value"}, 5146282821936882169)
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}
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func BenchmarkMetricToFingerprintDouble(b *testing.B) {
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benchmarkMetricToFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value"}, 3195800080984914717)
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}
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func BenchmarkMetricToFingerprintTriple(b *testing.B) {
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benchmarkMetricToFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 13843036195897128121)
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}
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func benchmarkMetricToFastFingerprint(b *testing.B, ls LabelSet, e Fingerprint) {
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for i := 0; i < b.N; i++ {
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if a := labelSetToFastFingerprint(ls); a != e {
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b.Fatalf("expected signature of %d for %s, got %d", e, ls, a)
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}
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}
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}
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func BenchmarkMetricToFastFingerprintScalar(b *testing.B) {
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benchmarkMetricToFastFingerprint(b, nil, 14695981039346656037)
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}
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func BenchmarkMetricToFastFingerprintSingle(b *testing.B) {
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benchmarkMetricToFastFingerprint(b, LabelSet{"first-label": "first-label-value"}, 5147259542624943964)
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}
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func BenchmarkMetricToFastFingerprintDouble(b *testing.B) {
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benchmarkMetricToFastFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value"}, 18269973311206963528)
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}
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func BenchmarkMetricToFastFingerprintTriple(b *testing.B) {
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benchmarkMetricToFastFingerprint(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676)
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}
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func BenchmarkEmptyLabelSignature(b *testing.B) {
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input := []map[string]string{nil, {}}
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var ms runtime.MemStats
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runtime.ReadMemStats(&ms)
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alloc := ms.Alloc
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for _, labels := range input {
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LabelsToSignature(labels)
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}
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runtime.ReadMemStats(&ms)
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if got := ms.Alloc; alloc != got {
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b.Fatal("expected LabelsToSignature with empty labels not to perform allocations")
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}
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}
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func benchmarkMetricToFastFingerprintConc(b *testing.B, ls LabelSet, e Fingerprint, concLevel int) {
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var start, end sync.WaitGroup
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start.Add(1)
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end.Add(concLevel)
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for i := 0; i < concLevel; i++ {
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go func() {
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start.Wait()
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for j := b.N / concLevel; j >= 0; j-- {
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if a := labelSetToFastFingerprint(ls); a != e {
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b.Fatalf("expected signature of %d for %s, got %d", e, ls, a)
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}
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}
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end.Done()
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}()
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}
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b.ResetTimer()
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start.Done()
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end.Wait()
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}
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func BenchmarkMetricToFastFingerprintTripleConc1(b *testing.B) {
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benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 1)
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}
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func BenchmarkMetricToFastFingerprintTripleConc2(b *testing.B) {
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benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 2)
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}
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func BenchmarkMetricToFastFingerprintTripleConc4(b *testing.B) {
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benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 4)
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}
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func BenchmarkMetricToFastFingerprintTripleConc8(b *testing.B) {
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benchmarkMetricToFastFingerprintConc(b, LabelSet{"first-label": "first-label-value", "second-label": "second-label-value", "third-label": "third-label-value"}, 15738406913934009676, 8)
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}
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