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scope_test.go
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scope_test.go
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// Copyright (c) 2023 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package tally
import (
"fmt"
"math"
"math/rand"
"strconv"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/goleak"
)
func TestMain(m *testing.M) {
goleak.VerifyTestMain(m)
}
var (
// alphanumericSanitizerOpts is the options to create a sanitizer which uses
// the alphanumeric SanitizeFn.
alphanumericSanitizerOpts = SanitizeOptions{
NameCharacters: ValidCharacters{
Ranges: AlphanumericRange,
Characters: UnderscoreDashCharacters,
},
KeyCharacters: ValidCharacters{
Ranges: AlphanumericRange,
Characters: UnderscoreDashCharacters,
},
ValueCharacters: ValidCharacters{
Ranges: AlphanumericRange,
Characters: UnderscoreDashCharacters,
},
ReplacementCharacter: DefaultReplacementCharacter,
}
)
type testIntValue struct {
val int64
tags map[string]string
reporter *testStatsReporter
}
func (m *testIntValue) ReportCount(value int64) {
m.val = value
m.reporter.cg.Done()
}
func (m *testIntValue) ReportTimer(interval time.Duration) {
m.val = int64(interval)
m.reporter.tg.Done()
}
type testFloatValue struct {
val float64
tags map[string]string
reporter *testStatsReporter
}
func (m *testFloatValue) ReportGauge(value float64) {
m.val = value
m.reporter.gg.Done()
}
type testHistogramValue struct {
tags map[string]string
valueSamples map[float64]int
durationSamples map[time.Duration]int
}
func newTestHistogramValue() *testHistogramValue {
return &testHistogramValue{
valueSamples: make(map[float64]int),
durationSamples: make(map[time.Duration]int),
}
}
type testStatsReporter struct {
cg sync.WaitGroup
gg sync.WaitGroup
tg sync.WaitGroup
hg sync.WaitGroup
counters map[string]*testIntValue
gauges map[string]*testFloatValue
timers map[string]*testIntValue
histograms map[string]*testHistogramValue
flushes int32
}
// newTestStatsReporter returns a new TestStatsReporter
func newTestStatsReporter() *testStatsReporter {
return &testStatsReporter{
counters: make(map[string]*testIntValue),
gauges: make(map[string]*testFloatValue),
timers: make(map[string]*testIntValue),
histograms: make(map[string]*testHistogramValue),
}
}
func (r *testStatsReporter) getCounters() map[string]*testIntValue {
dst := make(map[string]*testIntValue, len(r.counters))
for k, v := range r.counters {
var (
parts = strings.Split(k, "+")
name string
)
if len(parts) > 0 {
name = parts[0]
}
dst[name] = v
}
return dst
}
func (r *testStatsReporter) getGauges() map[string]*testFloatValue {
dst := make(map[string]*testFloatValue, len(r.gauges))
for k, v := range r.gauges {
var (
parts = strings.Split(k, "+")
name string
)
if len(parts) > 0 {
name = parts[0]
}
dst[name] = v
}
return dst
}
func (r *testStatsReporter) getTimers() map[string]*testIntValue {
dst := make(map[string]*testIntValue, len(r.timers))
for k, v := range r.timers {
var (
parts = strings.Split(k, "+")
name string
)
if len(parts) > 0 {
name = parts[0]
}
dst[name] = v
}
return dst
}
func (r *testStatsReporter) getHistograms() map[string]*testHistogramValue {
dst := make(map[string]*testHistogramValue, len(r.histograms))
for k, v := range r.histograms {
var (
parts = strings.Split(k, "+")
name string
)
if len(parts) > 0 {
name = parts[0]
}
dst[name] = v
}
return dst
}
func (r *testStatsReporter) WaitAll() {
r.cg.Wait()
r.gg.Wait()
r.tg.Wait()
r.hg.Wait()
}
func (r *testStatsReporter) AllocateCounter(
name string, tags map[string]string,
) CachedCount {
counter := &testIntValue{
val: 0,
tags: tags,
reporter: r,
}
r.counters[name] = counter
return counter
}
func (r *testStatsReporter) ReportCounter(name string, tags map[string]string, value int64) {
r.counters[name] = &testIntValue{
val: value,
tags: tags,
}
r.cg.Done()
}
func (r *testStatsReporter) AllocateGauge(
name string, tags map[string]string,
) CachedGauge {
gauge := &testFloatValue{
val: 0,
tags: tags,
reporter: r,
}
r.gauges[name] = gauge
return gauge
}
func (r *testStatsReporter) ReportGauge(name string, tags map[string]string, value float64) {
r.gauges[name] = &testFloatValue{
val: value,
tags: tags,
}
r.gg.Done()
}
func (r *testStatsReporter) AllocateTimer(
name string, tags map[string]string,
) CachedTimer {
timer := &testIntValue{
val: 0,
tags: tags,
reporter: r,
}
r.timers[name] = timer
return timer
}
func (r *testStatsReporter) ReportTimer(name string, tags map[string]string, interval time.Duration) {
r.timers[name] = &testIntValue{
val: int64(interval),
tags: tags,
}
r.tg.Done()
}
func (r *testStatsReporter) AllocateHistogram(
name string,
tags map[string]string,
buckets Buckets,
) CachedHistogram {
return testStatsReporterCachedHistogram{r, name, tags, buckets}
}
type testStatsReporterCachedHistogram struct {
r *testStatsReporter
name string
tags map[string]string
buckets Buckets
}
func (h testStatsReporterCachedHistogram) ValueBucket(
bucketLowerBound, bucketUpperBound float64,
) CachedHistogramBucket {
return testStatsReporterCachedHistogramValueBucket{h, bucketLowerBound, bucketUpperBound}
}
func (h testStatsReporterCachedHistogram) DurationBucket(
bucketLowerBound, bucketUpperBound time.Duration,
) CachedHistogramBucket {
return testStatsReporterCachedHistogramDurationBucket{h, bucketLowerBound, bucketUpperBound}
}
type testStatsReporterCachedHistogramValueBucket struct {
histogram testStatsReporterCachedHistogram
bucketLowerBound float64
bucketUpperBound float64
}
func (b testStatsReporterCachedHistogramValueBucket) ReportSamples(v int64) {
b.histogram.r.ReportHistogramValueSamples(
b.histogram.name, b.histogram.tags,
b.histogram.buckets, b.bucketLowerBound, b.bucketUpperBound, v,
)
}
type testStatsReporterCachedHistogramDurationBucket struct {
histogram testStatsReporterCachedHistogram
bucketLowerBound time.Duration
bucketUpperBound time.Duration
}
func (b testStatsReporterCachedHistogramDurationBucket) ReportSamples(v int64) {
b.histogram.r.ReportHistogramDurationSamples(
b.histogram.name, b.histogram.tags,
b.histogram.buckets, b.bucketLowerBound, b.bucketUpperBound, v,
)
}
func (r *testStatsReporter) ReportHistogramValueSamples(
name string,
tags map[string]string,
buckets Buckets,
bucketLowerBound float64,
bucketUpperBound float64,
samples int64,
) {
key := KeyForPrefixedStringMap(name, tags)
value, ok := r.histograms[key]
if !ok {
value = newTestHistogramValue()
value.tags = tags
r.histograms[key] = value
}
value.valueSamples[bucketUpperBound] = int(samples)
r.hg.Done()
}
func (r *testStatsReporter) ReportHistogramDurationSamples(
name string,
tags map[string]string,
buckets Buckets,
bucketLowerBound time.Duration,
bucketUpperBound time.Duration,
samples int64,
) {
key := KeyForPrefixedStringMap(name, tags)
value, ok := r.histograms[key]
if !ok {
value = newTestHistogramValue()
value.tags = tags
r.histograms[key] = value
}
value.durationSamples[bucketUpperBound] = int(samples)
r.hg.Done()
}
func (r *testStatsReporter) Capabilities() Capabilities {
return capabilitiesReportingNoTagging
}
func (r *testStatsReporter) Flush() {
atomic.AddInt32(&r.flushes, 1)
}
func TestWriteTimerImmediately(t *testing.T) {
r := newTestStatsReporter()
s, closer := NewRootScope(ScopeOptions{Reporter: r, OmitCardinalityMetrics: true}, 0)
defer closer.Close()
r.tg.Add(1)
s.Timer("ticky").Record(time.Millisecond * 175)
r.tg.Wait()
}
func TestWriteTimerClosureImmediately(t *testing.T) {
r := newTestStatsReporter()
s, closer := NewRootScope(ScopeOptions{Reporter: r, OmitCardinalityMetrics: true}, 0)
defer closer.Close()
r.tg.Add(1)
tm := s.Timer("ticky")
tm.Start().Stop()
r.tg.Wait()
}
func TestWriteReportLoop(t *testing.T) {
r := newTestStatsReporter()
s, closer := NewRootScope(ScopeOptions{Reporter: r, OmitCardinalityMetrics: true}, 10)
defer closer.Close()
r.cg.Add(1)
s.Counter("bar").Inc(1)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("ticky").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
r.WaitAll()
}
func TestWriteReportLoopDefaultInterval(t *testing.T) {
r := newTestStatsReporter()
s, closer := NewRootScopeWithDefaultInterval(
ScopeOptions{Reporter: r, OmitCardinalityMetrics: true},
)
defer closer.Close()
r.cg.Add(1)
s.Counter("bar").Inc(1)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("ticky").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
r.WaitAll()
}
func TestCachedReportLoop(t *testing.T) {
r := newTestStatsReporter()
s, closer := NewRootScope(ScopeOptions{CachedReporter: r, OmitCardinalityMetrics: true}, 10)
defer closer.Close()
r.cg.Add(1)
s.Counter("bar").Inc(1)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("ticky").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
r.WaitAll()
}
func testReportLoopFlushOnce(t *testing.T, cached bool) {
r := newTestStatsReporter()
scopeOpts := ScopeOptions{CachedReporter: r, OmitCardinalityMetrics: true}
if !cached {
scopeOpts = ScopeOptions{Reporter: r, OmitCardinalityMetrics: true}
}
s, closer := NewRootScope(scopeOpts, 10*time.Minute)
r.cg.Add(2)
s.Counter("foobar").Inc(1)
s.SubScope("baz").Counter("bar").Inc(1)
r.gg.Add(2)
s.Gauge("zed").Update(1)
s.SubScope("baz").Gauge("zed").Update(1)
r.tg.Add(2)
s.Timer("ticky").Record(time.Millisecond * 175)
s.SubScope("woof").Timer("sod").Record(time.Millisecond * 175)
r.hg.Add(2)
s.SubScope("woofers").Histogram("boo", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
closer.Close()
r.WaitAll()
v := atomic.LoadInt32(&r.flushes)
assert.Equal(t, int32(1), v)
}
func TestCachedReporterFlushOnce(t *testing.T) {
testReportLoopFlushOnce(t, true)
}
func TestReporterFlushOnce(t *testing.T) {
testReportLoopFlushOnce(t, false)
}
func TestWriteOnce(t *testing.T) {
r := newTestStatsReporter()
root, closer := NewRootScope(ScopeOptions{Reporter: r, OmitCardinalityMetrics: true}, 0)
defer closer.Close()
s := root.(*scope)
r.cg.Add(1)
s.Counter("bar").Inc(1)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("ticky").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
r.hg.Add(1)
s.Histogram("bat", MustMakeLinearValueBuckets(1, 1, 3)).RecordValue(2.1)
r.hg.Add(1)
s.SubScope("test").Histogram("bat", MustMakeLinearValueBuckets(1, 1, 3)).RecordValue(1.1)
r.hg.Add(1)
s.SubScope("test").Histogram("bat", MustMakeLinearValueBuckets(1, 1, 3)).RecordValue(2.1)
buckets := MustMakeLinearValueBuckets(100, 10, 3)
r.hg.Add(1)
s.SubScope("test").Histogram("qux", buckets).RecordValue(135.0)
r.hg.Add(1)
s.SubScope("test").Histogram("quux", buckets).RecordValue(101.0)
r.hg.Add(1)
s.SubScope("test2").Histogram("quux", buckets).RecordValue(101.0)
s.reportLoopRun()
r.WaitAll()
var (
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
)
assert.EqualValues(t, 1, counters["bar"].val)
assert.EqualValues(t, 1, gauges["zed"].val)
assert.EqualValues(t, time.Millisecond*175, timers["ticky"].val)
assert.EqualValues(t, 1, histograms["baz"].valueSamples[50.0])
assert.EqualValues(t, 1, histograms["bat"].valueSamples[3.0])
assert.EqualValues(t, 1, histograms["test.bat"].valueSamples[2.0])
assert.EqualValues(t, 1, histograms["test.bat"].valueSamples[3.0])
assert.EqualValues(t, 1, histograms["test.qux"].valueSamples[math.MaxFloat64])
assert.EqualValues(t, 1, histograms["test.quux"].valueSamples[110.0])
assert.EqualValues(t, 1, histograms["test2.quux"].valueSamples[110.0])
r = newTestStatsReporter()
s.reportLoopRun()
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
assert.Nil(t, counters["bar"])
assert.Nil(t, gauges["zed"])
assert.Nil(t, timers["ticky"])
assert.Nil(t, histograms["baz"])
assert.Nil(t, histograms["bat"])
assert.Nil(t, histograms["test.qux"])
}
func TestHistogramSharedBucketMetrics(t *testing.T) {
var (
r = newTestStatsReporter()
scope = newRootScope(ScopeOptions{
Prefix: "",
Tags: nil,
CachedReporter: r,
OmitCardinalityMetrics: true,
}, 0)
builder = func(s Scope) func(map[string]string) {
buckets := MustMakeLinearValueBuckets(10, 10, 3)
return func(tags map[string]string) {
s.Tagged(tags).Histogram("hist", buckets).RecordValue(19.0)
}
}
)
var (
wg = &sync.WaitGroup{}
record = builder(scope)
)
r.hg.Add(4)
for i := 0; i < 10000; i++ {
i := i
wg.Add(1)
go func() {
defer wg.Done()
val := strconv.Itoa(i % 4)
record(
map[string]string{
"key": val,
},
)
time.Sleep(time.Duration(rand.Float64() * float64(time.Second)))
}()
}
wg.Wait()
scope.reportRegistry()
r.WaitAll()
unseen := map[string]struct{}{
"0": {},
"1": {},
"2": {},
"3": {},
}
require.Equal(t, len(unseen), len(r.histograms))
for name, value := range r.histograms {
if !strings.HasPrefix(name, "hist+") {
continue
}
count, ok := value.valueSamples[20.0]
require.True(t, ok)
require.Equal(t, 2500, count)
delete(unseen, value.tags["key"])
}
require.Equal(t, 0, len(unseen), fmt.Sprintf("%v", unseen))
}
func TestConcurrentUpdates(t *testing.T) {
var (
r = newTestStatsReporter()
wg = &sync.WaitGroup{}
workerCount = 20
scopeCount = 4
countersPerScope = 4
counterIncrs = 5000
rs = newRootScope(
ScopeOptions{
Prefix: "",
Tags: nil,
CachedReporter: r,
OmitCardinalityMetrics: true,
}, 0,
)
scopes = []Scope{rs}
counters []Counter
)
// Instantiate Subscopes.
for i := 1; i < scopeCount; i++ {
scopes = append(scopes, rs.SubScope(fmt.Sprintf("subscope_%d", i)))
}
// Instantiate Counters.
for sNum, s := range scopes {
for cNum := 0; cNum < countersPerScope; cNum++ {
counters = append(counters, s.Counter(fmt.Sprintf("scope_%d_counter_%d", sNum, cNum)))
}
}
// Instantiate workers.
r.cg.Add(scopeCount * countersPerScope)
for worker := 0; worker < workerCount; worker++ {
wg.Add(1)
go func() {
defer wg.Done()
// Counter should have counterIncrs * workerCount.
for i := 0; i < counterIncrs*len(counters); i++ {
counters[i%len(counters)].Inc(1)
}
}()
}
wg.Wait()
rs.reportRegistry()
r.WaitAll()
wantVal := int64(workerCount * counterIncrs)
for _, gotCounter := range r.getCounters() {
assert.Equal(t, gotCounter.val, wantVal)
}
}
func TestCounterSanitized(t *testing.T) {
r := newTestStatsReporter()
root, closer := NewRootScope(ScopeOptions{
Reporter: r,
SanitizeOptions: &alphanumericSanitizerOpts,
OmitCardinalityMetrics: true,
}, 0)
defer closer.Close()
s := root.(*scope)
r.cg.Add(1)
s.Counter("how?").Inc(1)
r.gg.Add(1)
s.Gauge("does!").Update(1)
r.tg.Add(1)
s.Timer("this!").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("work1!?", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
s.report(r)
r.WaitAll()
var (
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
)
assert.Nil(t, counters["how?"])
assert.EqualValues(t, 1, counters["how_"].val)
assert.Nil(t, gauges["does!"])
assert.EqualValues(t, 1, gauges["does_"].val)
assert.Nil(t, timers["this!"])
assert.EqualValues(t, time.Millisecond*175, timers["this_"].val)
assert.Nil(t, histograms["work1!?"])
assert.EqualValues(t, 1, histograms["work1__"].valueSamples[50.0])
r = newTestStatsReporter()
s.report(r)
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
assert.Nil(t, counters["how?"])
assert.Nil(t, counters["how_"])
assert.Nil(t, gauges["does!"])
assert.Nil(t, gauges["does_"])
assert.Nil(t, timers["this!"])
assert.Nil(t, timers["this_"])
assert.Nil(t, histograms["work1!?"])
assert.Nil(t, histograms["work1__"])
}
func TestCachedReporter(t *testing.T) {
r := newTestStatsReporter()
root, closer := NewRootScope(ScopeOptions{CachedReporter: r, OmitCardinalityMetrics: true}, 0)
defer closer.Close()
s := root.(*scope)
r.cg.Add(1)
s.Counter("bar").Inc(1)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("ticky").Record(time.Millisecond * 175)
r.hg.Add(2)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
s.Histogram("qux", MustMakeLinearDurationBuckets(0, 10*time.Millisecond, 10)).
RecordDuration(42 * time.Millisecond)
s.cachedReport()
r.WaitAll()
var (
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
)
assert.EqualValues(t, 1, counters["bar"].val)
assert.EqualValues(t, 1, gauges["zed"].val)
assert.EqualValues(t, time.Millisecond*175, timers["ticky"].val)
assert.EqualValues(t, 1, histograms["baz"].valueSamples[50.0])
assert.EqualValues(t, 1, histograms["qux"].durationSamples[50*time.Millisecond])
}
func TestRootScopeWithoutPrefix(t *testing.T) {
r := newTestStatsReporter()
root, closer := NewRootScope(ScopeOptions{Reporter: r, OmitCardinalityMetrics: true}, 0)
defer closer.Close()
s := root.(*scope)
r.cg.Add(1)
s.Counter("bar").Inc(1)
s.Counter("bar").Inc(20)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("blork").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
s.report(r)
r.WaitAll()
var (
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
)
assert.EqualValues(t, 21, counters["bar"].val)
assert.EqualValues(t, 1, gauges["zed"].val)
assert.EqualValues(t, time.Millisecond*175, timers["blork"].val)
assert.EqualValues(t, 1, histograms["baz"].valueSamples[50.0])
}
func TestRootScopeWithPrefix(t *testing.T) {
r := newTestStatsReporter()
root, closer := NewRootScope(
ScopeOptions{Prefix: "foo", Reporter: r, OmitCardinalityMetrics: true}, 0,
)
defer closer.Close()
s := root.(*scope)
r.cg.Add(1)
s.Counter("bar").Inc(1)
s.Counter("bar").Inc(20)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("blork").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
s.report(r)
r.WaitAll()
var (
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
)
assert.EqualValues(t, 21, counters["foo.bar"].val)
assert.EqualValues(t, 1, gauges["foo.zed"].val)
assert.EqualValues(t, time.Millisecond*175, timers["foo.blork"].val)
assert.EqualValues(t, 1, histograms["foo.baz"].valueSamples[50.0])
}
func TestRootScopeWithDifferentSeparator(t *testing.T) {
r := newTestStatsReporter()
root, closer := NewRootScope(
ScopeOptions{
Prefix: "foo", Separator: "_", Reporter: r, OmitCardinalityMetrics: true,
}, 0,
)
defer closer.Close()
s := root.(*scope)
r.cg.Add(1)
s.Counter("bar").Inc(1)
s.Counter("bar").Inc(20)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("blork").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
s.report(r)
r.WaitAll()
var (
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
)
assert.EqualValues(t, 21, counters["foo_bar"].val)
assert.EqualValues(t, 1, gauges["foo_zed"].val)
assert.EqualValues(t, time.Millisecond*175, timers["foo_blork"].val)
assert.EqualValues(t, 1, histograms["foo_baz"].valueSamples[50.0])
}
func TestSubScope(t *testing.T) {
r := newTestStatsReporter()
root, closer := NewRootScope(
ScopeOptions{Prefix: "foo", Reporter: r, OmitCardinalityMetrics: true}, 0,
)
defer closer.Close()
tags := map[string]string{"foo": "bar"}
s := root.Tagged(tags).SubScope("mork").(*scope)
r.cg.Add(1)
s.Counter("bar").Inc(1)
s.Counter("bar").Inc(20)
r.gg.Add(1)
s.Gauge("zed").Update(1)
r.tg.Add(1)
s.Timer("blork").Record(time.Millisecond * 175)
r.hg.Add(1)
s.Histogram("baz", MustMakeLinearValueBuckets(0, 10, 10)).
RecordValue(42.42)
s.report(r)
r.WaitAll()
var (
counters = r.getCounters()
gauges = r.getGauges()
timers = r.getTimers()
histograms = r.getHistograms()
)
// Assert prefixed correctly
assert.EqualValues(t, 21, counters["foo.mork.bar"].val)
assert.EqualValues(t, 1, gauges["foo.mork.zed"].val)
assert.EqualValues(t, time.Millisecond*175, timers["foo.mork.blork"].val)
assert.EqualValues(t, 1, histograms["foo.mork.baz"].valueSamples[50.0])
// Assert tags inherited
assert.Equal(t, tags, counters["foo.mork.bar"].tags)
assert.Equal(t, tags, gauges["foo.mork.zed"].tags)
assert.Equal(t, tags, timers["foo.mork.blork"].tags)
assert.Equal(t, tags, histograms["foo.mork.baz"].tags)
}
func TestSubScopeClose(t *testing.T) {
r := newTestStatsReporter()
rs, closer := NewRootScope(ScopeOptions{Prefix: "foo", Reporter: r, OmitCardinalityMetrics: true}, 0)
// defer closer.Close()
_ = closer
var (
root = rs.(*scope)
s = root.SubScope("mork").(*scope)
rootCounter = root.Counter("foo")
subCounter = s.Counter("foo")
)
// Emit a metric from both scopes.
r.cg.Add(1)
rootCounter.Inc(1)
r.cg.Add(1)
subCounter.Inc(1)
// Verify that we got both metrics.
root.reportRegistry()
r.WaitAll()
counters := r.getCounters()
require.EqualValues(t, 1, counters["foo.foo"].val)
require.EqualValues(t, 1, counters["foo.mork.foo"].val)
// Close the subscope. We expect both metrics to still be reported, because
// we won't have reported the registry before we update the metrics.
require.NoError(t, s.Close())
// Create a subscope from the now-closed scope; it should nop.
ns := s.SubScope("foobar")
require.Equal(t, NoopScope, ns)
// Emit a metric from all scopes.
r.cg.Add(1)
rootCounter.Inc(2)
r.cg.Add(1)
subCounter.Inc(2)
// Verify that we still got both metrics.
root.reportLoopRun()
r.WaitAll()
counters = r.getCounters()
require.EqualValues(t, 2, counters["foo.foo"].val)
require.EqualValues(t, 2, counters["foo.mork.foo"].val)
// Emit a metric for both scopes. The root counter should succeed, and the
// subscope counter should not update what's in the reporter.
r.cg.Add(1)
rootCounter.Inc(3)
subCounter.Inc(3)
root.reportLoopRun()
r.WaitAll()
time.Sleep(time.Second) // since we can't wg.Add the non-reported counter
// We only expect the root scope counter; the subscope counter will be the
// value previously held by the reporter, because it has not been udpated.
counters = r.getCounters()
require.EqualValues(t, 3, counters["foo.foo"].val)
require.EqualValues(t, 2, counters["foo.mork.foo"].val)
// Ensure that we can double-close harmlessly.
require.NoError(t, s.Close())
// Create one more scope so that we can ensure it's defunct once the root is
// closed.
ns = root.SubScope("newscope")
// Close the root scope. We should not be able to emit any more metrics,
// because the root scope reports the registry prior to closing.
require.NoError(t, closer.Close())
ns.Counter("newcounter").Inc(1)
rootCounter.Inc(4)
root.registry.Report(r)
time.Sleep(time.Second) // since we can't wg.Add the non-reported counter
// We do not expect any updates.
counters = r.getCounters()
require.EqualValues(t, 3, counters["foo.foo"].val)
require.EqualValues(t, 2, counters["foo.mork.foo"].val)
_, found := counters["newscope.newcounter"]
require.False(t, found)