forked from mirror/client_golang
536 lines
15 KiB
Go
536 lines
15 KiB
Go
// 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 prometheus
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import (
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"fmt"
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"testing"
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dto "github.com/prometheus/client_model/go"
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)
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func TestRemove(t *testing.T) {
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vec := NewGaugeVec(
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GaugeOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"l1", "l2"},
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)
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testRemove(t, vec)
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}
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func TestRemoveWithCollisions(t *testing.T) {
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vec := NewGaugeVec(
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GaugeOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"l1", "l2"},
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)
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vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
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vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
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testRemove(t, vec)
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}
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func testRemove(t *testing.T, vec *GaugeVec) {
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if got, want := vec.Remove(Labels{"l1": "v1", "l2": "v2"}), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
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if got, want := vec.Remove(Labels{"l1": "v1", "l2": "v2"}), true; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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if got, want := vec.Remove(Labels{"l1": "v1", "l2": "v2"}), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
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if got, want := vec.Remove(Labels{"l2": "v2", "l1": "v1"}), true; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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if got, want := vec.Remove(Labels{"l2": "v2", "l1": "v1"}), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
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if got, want := vec.Remove(Labels{"l2": "v1", "l1": "v2"}), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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if got, want := vec.Remove(Labels{"l1": "v1"}), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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}
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func TestRemoveLabelValues(t *testing.T) {
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vec := NewGaugeVec(
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GaugeOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"l1", "l2"},
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)
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testRemoveLabelValues(t, vec)
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}
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func TestRemoveLabelValuesWithCollisions(t *testing.T) {
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vec := NewGaugeVec(
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GaugeOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"l1", "l2"},
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)
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vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
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vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
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testRemoveLabelValues(t, vec)
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}
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func testRemoveLabelValues(t *testing.T, vec *GaugeVec) {
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if got, want := vec.RemoveLabelValues("v1", "v2"), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
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vec.With(Labels{"l1": "v1", "l2": "v3"}).(Gauge).Set(42) // Add junk data for collision.
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if got, want := vec.RemoveLabelValues("v1", "v2"), true; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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if got, want := vec.RemoveLabelValues("v1", "v2"), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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if got, want := vec.RemoveLabelValues("v1", "v3"), true; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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vec.With(Labels{"l1": "v1", "l2": "v2"}).(Gauge).Set(42)
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// Remove out of order.
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if got, want := vec.RemoveLabelValues("v2", "v1"), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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if got, want := vec.RemoveLabelValues("v1"), false; got != want {
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t.Errorf("got %v, want %v", got, want)
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}
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}
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func TestMetricVec(t *testing.T) {
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vec := NewGaugeVec(
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GaugeOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"l1", "l2"},
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)
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testMetricVec(t, vec)
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}
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func TestMetricVecWithCollisions(t *testing.T) {
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vec := NewGaugeVec(
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GaugeOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"l1", "l2"},
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)
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vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
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vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
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testMetricVec(t, vec)
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}
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func testMetricVec(t *testing.T, vec *GaugeVec) {
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vec.Clear() // Actually test Clear now!
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var pair [2]string
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// Keep track of metrics.
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expected := map[[2]string]int{}
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for i := 0; i < 1000; i++ {
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pair[0], pair[1] = fmt.Sprint(i%4), fmt.Sprint(i%5) // Varying combinations multiples.
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expected[pair]++
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vec.WithLabelValues(pair[0], pair[1]).Inc()
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expected[[2]string{"v1", "v2"}]++
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vec.WithLabelValues("v1", "v2").(Gauge).Inc()
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}
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var total int
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for _, metrics := range vec.metricMap.metrics {
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for _, metric := range metrics {
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total++
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copy(pair[:], metric.values)
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var metricOut dto.Metric
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if err := metric.metric.Write(&metricOut); err != nil {
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t.Fatal(err)
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}
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actual := *metricOut.Gauge.Value
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var actualPair [2]string
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for i, label := range metricOut.Label {
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actualPair[i] = *label.Value
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}
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// Test output pair against metric.values to ensure we've selected
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// the right one. We check this to ensure the below check means
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// anything at all.
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if actualPair != pair {
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t.Fatalf("unexpected pair association in metric map: %v != %v", actualPair, pair)
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}
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if actual != float64(expected[pair]) {
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t.Fatalf("incorrect counter value for %v: %v != %v", pair, actual, expected[pair])
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}
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}
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}
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if total != len(expected) {
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t.Fatalf("unexpected number of metrics: %v != %v", total, len(expected))
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}
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vec.Clear()
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if len(vec.metricMap.metrics) > 0 {
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t.Fatalf("reset failed")
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}
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}
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func TestCounterVecEndToEndWithCollision(t *testing.T) {
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vec := NewCounterVec(
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CounterOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"labelname"},
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)
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vec.WithLabelValues("77kepQFQ8Kl").Inc()
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vec.WithLabelValues("!0IC=VloaY").Add(2)
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m := &dto.Metric{}
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if err := vec.WithLabelValues("77kepQFQ8Kl").Write(m); err != nil {
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t.Fatal(err)
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}
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if got, want := m.GetLabel()[0].GetValue(), "77kepQFQ8Kl"; got != want {
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t.Errorf("got label value %q, want %q", got, want)
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}
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if got, want := m.GetCounter().GetValue(), 1.; got != want {
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t.Errorf("got value %f, want %f", got, want)
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}
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m.Reset()
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if err := vec.WithLabelValues("!0IC=VloaY").Write(m); err != nil {
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t.Fatal(err)
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}
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if got, want := m.GetLabel()[0].GetValue(), "!0IC=VloaY"; got != want {
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t.Errorf("got label value %q, want %q", got, want)
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}
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if got, want := m.GetCounter().GetValue(), 2.; got != want {
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t.Errorf("got value %f, want %f", got, want)
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}
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}
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func TestCurryVec(t *testing.T) {
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vec := NewCounterVec(
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CounterOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"one", "two", "three"},
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)
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testCurryVec(t, vec)
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}
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func TestCurryVecWithCollisions(t *testing.T) {
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vec := NewCounterVec(
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CounterOpts{
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Name: "test",
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Help: "helpless",
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},
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[]string{"one", "two", "three"},
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)
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vec.hashAdd = func(h uint64, s string) uint64 { return 1 }
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vec.hashAddByte = func(h uint64, b byte) uint64 { return 1 }
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testCurryVec(t, vec)
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}
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func testCurryVec(t *testing.T, vec *CounterVec) {
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assertMetrics := func(t *testing.T) {
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n := 0
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for _, m := range vec.metricMap.metrics {
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n += len(m)
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}
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if n != 2 {
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t.Error("expected two metrics, got", n)
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}
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m := &dto.Metric{}
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c1, err := vec.GetMetricWithLabelValues("1", "2", "3")
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if err != nil {
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t.Fatal("unexpected error getting metric:", err)
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}
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c1.Write(m)
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if want, got := 1., m.GetCounter().GetValue(); want != got {
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t.Errorf("want %f as counter value, got %f", want, got)
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}
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m.Reset()
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c2, err := vec.GetMetricWithLabelValues("11", "22", "33")
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if err != nil {
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t.Fatal("unexpected error getting metric:", err)
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}
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c2.Write(m)
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if want, got := 1., m.GetCounter().GetValue(); want != got {
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t.Errorf("want %f as counter value, got %f", want, got)
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}
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}
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assertNoMetric := func(t *testing.T) {
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if n := len(vec.metricMap.metrics); n != 0 {
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t.Error("expected no metrics, got", n)
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}
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}
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t.Run("zero labels", func(t *testing.T) {
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c1 := vec.MustCurryWith(nil)
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c2 := vec.MustCurryWith(nil)
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c1.WithLabelValues("1", "2", "3").Inc()
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c2.With(Labels{"one": "11", "two": "22", "three": "33"}).Inc()
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assertMetrics(t)
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if !c1.Remove(Labels{"one": "1", "two": "2", "three": "3"}) {
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t.Error("deletion failed")
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}
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if !c2.RemoveLabelValues("11", "22", "33") {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("first label", func(t *testing.T) {
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c1 := vec.MustCurryWith(Labels{"one": "1"})
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c2 := vec.MustCurryWith(Labels{"one": "11"})
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c1.WithLabelValues("2", "3").Inc()
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c2.With(Labels{"two": "22", "three": "33"}).Inc()
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assertMetrics(t)
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if c1.Remove(Labels{"two": "22", "three": "33"}) {
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t.Error("deletion unexpectedly succeeded")
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}
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if c2.RemoveLabelValues("2", "3") {
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t.Error("deletion unexpectedly succeeded")
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}
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if !c1.Remove(Labels{"two": "2", "three": "3"}) {
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t.Error("deletion failed")
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}
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if !c2.RemoveLabelValues("22", "33") {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("middle label", func(t *testing.T) {
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c1 := vec.MustCurryWith(Labels{"two": "2"})
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c2 := vec.MustCurryWith(Labels{"two": "22"})
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c1.WithLabelValues("1", "3").Inc()
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c2.With(Labels{"one": "11", "three": "33"}).Inc()
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assertMetrics(t)
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if c1.Remove(Labels{"one": "11", "three": "33"}) {
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t.Error("deletion unexpectedly succeeded")
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}
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if c2.RemoveLabelValues("1", "3") {
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t.Error("deletion unexpectedly succeeded")
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}
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if !c1.Remove(Labels{"one": "1", "three": "3"}) {
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t.Error("deletion failed")
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}
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if !c2.RemoveLabelValues("11", "33") {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("last label", func(t *testing.T) {
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c1 := vec.MustCurryWith(Labels{"three": "3"})
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c2 := vec.MustCurryWith(Labels{"three": "33"})
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c1.WithLabelValues("1", "2").Inc()
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c2.With(Labels{"one": "11", "two": "22"}).Inc()
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assertMetrics(t)
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if c1.Remove(Labels{"two": "22", "one": "11"}) {
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t.Error("deletion unexpectedly succeeded")
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}
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if c2.RemoveLabelValues("1", "2") {
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t.Error("deletion unexpectedly succeeded")
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}
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if !c1.Remove(Labels{"two": "2", "one": "1"}) {
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t.Error("deletion failed")
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}
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if !c2.RemoveLabelValues("11", "22") {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("two labels", func(t *testing.T) {
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c1 := vec.MustCurryWith(Labels{"three": "3", "one": "1"})
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c2 := vec.MustCurryWith(Labels{"three": "33", "one": "11"})
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c1.WithLabelValues("2").Inc()
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c2.With(Labels{"two": "22"}).Inc()
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assertMetrics(t)
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if c1.Remove(Labels{"two": "22"}) {
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t.Error("deletion unexpectedly succeeded")
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}
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if c2.RemoveLabelValues("2") {
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t.Error("deletion unexpectedly succeeded")
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}
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if !c1.Remove(Labels{"two": "2"}) {
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t.Error("deletion failed")
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}
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if !c2.RemoveLabelValues("22") {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("all labels", func(t *testing.T) {
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c1 := vec.MustCurryWith(Labels{"three": "3", "two": "2", "one": "1"})
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c2 := vec.MustCurryWith(Labels{"three": "33", "one": "11", "two": "22"})
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c1.WithLabelValues().Inc()
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c2.With(nil).Inc()
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assertMetrics(t)
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if !c1.Remove(Labels{}) {
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t.Error("deletion failed")
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}
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if !c2.RemoveLabelValues() {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("double curry", func(t *testing.T) {
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c1 := vec.MustCurryWith(Labels{"three": "3"}).MustCurryWith(Labels{"one": "1"})
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c2 := vec.MustCurryWith(Labels{"three": "33"}).MustCurryWith(Labels{"one": "11"})
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c1.WithLabelValues("2").Inc()
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c2.With(Labels{"two": "22"}).Inc()
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assertMetrics(t)
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if c1.Remove(Labels{"two": "22"}) {
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t.Error("deletion unexpectedly succeeded")
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}
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if c2.RemoveLabelValues("2") {
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t.Error("deletion unexpectedly succeeded")
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}
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if !c1.Remove(Labels{"two": "2"}) {
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t.Error("deletion failed")
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}
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if !c2.RemoveLabelValues("22") {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("use already curried label", func(t *testing.T) {
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c1 := vec.MustCurryWith(Labels{"three": "3"})
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if _, err := c1.GetMetricWithLabelValues("1", "2", "3"); err == nil {
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t.Error("expected error when using already curried label")
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}
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if _, err := c1.GetMetricWith(Labels{"one": "1", "two": "2", "three": "3"}); err == nil {
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t.Error("expected error when using already curried label")
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}
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assertNoMetric(t)
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c1.WithLabelValues("1", "2").Inc()
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if c1.Remove(Labels{"one": "1", "two": "2", "three": "3"}) {
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t.Error("deletion unexpectedly succeeded")
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}
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if !c1.Remove(Labels{"one": "1", "two": "2"}) {
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t.Error("deletion failed")
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}
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assertNoMetric(t)
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})
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t.Run("curry already curried label", func(t *testing.T) {
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if _, err := vec.MustCurryWith(Labels{"three": "3"}).CurryWith(Labels{"three": "33"}); err == nil {
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t.Error("currying unexpectedly succeeded")
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} else if err.Error() != `label name "three" is already curried` {
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t.Error("currying returned unexpected error:", err)
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}
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})
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t.Run("unknown label", func(t *testing.T) {
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if _, err := vec.CurryWith(Labels{"foo": "bar"}); err == nil {
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t.Error("currying unexpectedly succeeded")
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} else if err.Error() != "1 unknown label(s) found during currying" {
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t.Error("currying returned unexpected error:", err)
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}
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})
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}
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func BenchmarkMetricVecWithLabelValuesBasic(b *testing.B) {
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benchmarkMetricVecWithLabelValues(b, map[string][]string{
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"l1": {"onevalue"},
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"l2": {"twovalue"},
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})
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}
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func BenchmarkMetricVecWithLabelValues2Keys10ValueCardinality(b *testing.B) {
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benchmarkMetricVecWithLabelValuesCardinality(b, 2, 10)
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}
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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...)
|
|
}
|
|
}
|