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// Copyright (c) 2021 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 multi
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
tally "github.com/uber-go/tally/v4"
)
func TestMultiReporter(t *testing.T) {
a, b, c :=
newCapturingStatsReporter(),
newCapturingStatsReporter(),
newCapturingStatsReporter()
all := []*capturingStatsReporter{a, b, c}
r := NewMultiReporter(a, b, c)
tags := []map[string]string{
{"foo": "bar"},
{"foo": "baz"},
{"foo": "qux"},
{"foo": "bzz"},
{"foo": "buz"},
}
valueBuckets := tally.MustMakeLinearValueBuckets(0, 2, 5)
durationBuckets := tally.MustMakeLinearDurationBuckets(0, 2*time.Second, 5)
r.ReportCounter("foo", tags[0], 42)
r.ReportCounter("foo", tags[0], 84)
r.ReportGauge("baz", tags[1], 42.0)
r.ReportTimer("qux", tags[2], 126*time.Millisecond)
r.ReportHistogramValueSamples("bzz", tags[3], valueBuckets,
2.0, 4.0, 3)
r.ReportHistogramDurationSamples("buz", tags[4], durationBuckets,
2*time.Second, 4*time.Second, 3)
for _, r := range all {
require.Equal(t, 2, len(r.counts))
assert.Equal(t, "foo", r.counts[0].name)
assert.Equal(t, tags[0], r.counts[0].tags)
assert.Equal(t, int64(42), r.counts[0].value)
assert.Equal(t, "foo", r.counts[1].name)
assert.Equal(t, tags[0], r.counts[1].tags)
assert.Equal(t, int64(84), r.counts[1].value)
assert.Equal(t, "baz", r.gauges[0].name)
assert.Equal(t, tags[1], r.gauges[0].tags)
assert.Equal(t, float64(42.0), r.gauges[0].value)
assert.Equal(t, "qux", r.timers[0].name)
assert.Equal(t, tags[2], r.timers[0].tags)
assert.Equal(t, 126*time.Millisecond, r.timers[0].value)
assert.Equal(t, "bzz", r.histogramValueSamples[0].name)
assert.Equal(t, tags[3], r.histogramValueSamples[0].tags)
assert.Equal(t, 2.0, r.histogramValueSamples[0].bucketLowerBound)
assert.Equal(t, 4.0, r.histogramValueSamples[0].bucketUpperBound)
assert.Equal(t, int64(3), r.histogramValueSamples[0].samples)
assert.Equal(t, "buz", r.histogramDurationSamples[0].name)
assert.Equal(t, tags[4], r.histogramDurationSamples[0].tags)
assert.Equal(t, 2*time.Second, r.histogramDurationSamples[0].bucketLowerBound)
assert.Equal(t, 4*time.Second, r.histogramDurationSamples[0].bucketUpperBound)
assert.Equal(t, int64(3), r.histogramDurationSamples[0].samples)
}
assert.NotNil(t, r.Capabilities())
r.Flush()
for _, r := range all {
assert.Equal(t, 1, r.flush)
}
}
func TestMultiCachedReporter(t *testing.T) {
a, b, c :=
newCapturingStatsReporter(),
newCapturingStatsReporter(),
newCapturingStatsReporter()
all := []*capturingStatsReporter{a, b, c}
r := NewMultiCachedReporter(a, b, c)
tags := []map[string]string{
{"foo": "bar"},
{"foo": "baz"},
{"foo": "qux"},
{"foo": "bzz"},
{"foo": "buz"},
}
valueBuckets := tally.MustMakeLinearValueBuckets(0, 2, 5)
durationBuckets := tally.MustMakeLinearDurationBuckets(0, 2*time.Second, 5)
ctr := r.AllocateCounter("foo", tags[0])
ctr.ReportCount(42)
ctr.ReportCount(84)
gauge := r.AllocateGauge("baz", tags[1])
gauge.ReportGauge(42.0)
tmr := r.AllocateTimer("qux", tags[2])
tmr.ReportTimer(126 * time.Millisecond)
vhist := r.AllocateHistogram("bzz", tags[3], valueBuckets)
vhist.ValueBucket(2.0, 4.0).ReportSamples(3)
dhist := r.AllocateHistogram("buz", tags[4], durationBuckets)
dhist.DurationBucket(2*time.Second, 4*time.Second).ReportSamples(3)
for _, r := range all {
require.Equal(t, 2, len(r.counts))
assert.Equal(t, "foo", r.counts[0].name)
assert.Equal(t, tags[0], r.counts[0].tags)
assert.Equal(t, int64(42), r.counts[0].value)
assert.Equal(t, "foo", r.counts[1].name)
assert.Equal(t, tags[0], r.counts[1].tags)
assert.Equal(t, int64(84), r.counts[1].value)
assert.Equal(t, "baz", r.gauges[0].name)
assert.Equal(t, tags[1], r.gauges[0].tags)
assert.Equal(t, float64(42.0), r.gauges[0].value)
assert.Equal(t, "qux", r.timers[0].name)
assert.Equal(t, tags[2], r.timers[0].tags)
assert.Equal(t, 126*time.Millisecond, r.timers[0].value)
assert.Equal(t, "bzz", r.histogramValueSamples[0].name)
assert.Equal(t, tags[3], r.histogramValueSamples[0].tags)
assert.Equal(t, 2.0, r.histogramValueSamples[0].bucketLowerBound)
assert.Equal(t, 4.0, r.histogramValueSamples[0].bucketUpperBound)
assert.Equal(t, int64(3), r.histogramValueSamples[0].samples)
assert.Equal(t, "buz", r.histogramDurationSamples[0].name)
assert.Equal(t, tags[4], r.histogramDurationSamples[0].tags)
assert.Equal(t, 2*time.Second, r.histogramDurationSamples[0].bucketLowerBound)
assert.Equal(t, 4*time.Second, r.histogramDurationSamples[0].bucketUpperBound)
assert.Equal(t, int64(3), r.histogramDurationSamples[0].samples)
}
assert.NotNil(t, r.Capabilities())
r.Flush()
for _, r := range all {
assert.Equal(t, 1, r.flush)
}
}
type capturingStatsReporter struct {
counts []capturedCount
gauges []capturedGauge
timers []capturedTimer
histogramValueSamples []capturedHistogramValueSamples
histogramDurationSamples []capturedHistogramDurationSamples
capabilities int
flush int
}
type capturedCount struct {
name string
tags map[string]string
value int64
}
type capturedGauge struct {
name string
tags map[string]string
value float64
}
type capturedTimer struct {
name string
tags map[string]string
value time.Duration
}
type capturedHistogramValueSamples struct {
name string
tags map[string]string
bucketLowerBound float64
bucketUpperBound float64
samples int64
}
type capturedHistogramDurationSamples struct {
name string
tags map[string]string
bucketLowerBound time.Duration
bucketUpperBound time.Duration
samples int64
}
func newCapturingStatsReporter() *capturingStatsReporter {
return &capturingStatsReporter{}
}
func (r *capturingStatsReporter) ReportCounter(
name string,
tags map[string]string,
value int64,
) {
r.counts = append(r.counts, capturedCount{name, tags, value})
}
func (r *capturingStatsReporter) ReportGauge(
name string,
tags map[string]string,
value float64,
) {
r.gauges = append(r.gauges, capturedGauge{name, tags, value})
}
func (r *capturingStatsReporter) ReportTimer(
name string,
tags map[string]string,
value time.Duration,
) {
r.timers = append(r.timers, capturedTimer{name, tags, value})
}
func (r *capturingStatsReporter) ReportHistogramValueSamples(
name string,
tags map[string]string,
buckets tally.Buckets,
bucketLowerBound,
bucketUpperBound float64,
samples int64,
) {
elem := capturedHistogramValueSamples{
name, tags,
bucketLowerBound, bucketUpperBound, samples,
}
r.histogramValueSamples = append(r.histogramValueSamples, elem)
}
func (r *capturingStatsReporter) ReportHistogramDurationSamples(
name string,
tags map[string]string,
buckets tally.Buckets,
bucketLowerBound,
bucketUpperBound time.Duration,
samples int64,
) {
elem := capturedHistogramDurationSamples{
name, tags,
bucketLowerBound, bucketUpperBound, samples,
}
r.histogramDurationSamples = append(r.histogramDurationSamples, elem)
}
func (r *capturingStatsReporter) AllocateCounter(
name string,
tags map[string]string,
) tally.CachedCount {
return cachedCount{fn: func(value int64) {
r.counts = append(r.counts, capturedCount{name, tags, value})
}}
}
func (r *capturingStatsReporter) AllocateGauge(
name string,
tags map[string]string,
) tally.CachedGauge {
return cachedGauge{fn: func(value float64) {
r.gauges = append(r.gauges, capturedGauge{name, tags, value})
}}
}
func (r *capturingStatsReporter) AllocateTimer(
name string,
tags map[string]string,
) tally.CachedTimer {
return cachedTimer{fn: func(value time.Duration) {
r.timers = append(r.timers, capturedTimer{name, tags, value})
}}
}
func (r *capturingStatsReporter) AllocateHistogram(
name string,
tags map[string]string,
buckets tally.Buckets,
) tally.CachedHistogram {
return cachedHistogram{
valueFn: func(bucketLowerBound, bucketUpperBound float64, samples int64) {
elem := capturedHistogramValueSamples{
name, tags, bucketLowerBound, bucketUpperBound, samples,
}
r.histogramValueSamples = append(r.histogramValueSamples, elem)
},
durationFn: func(bucketLowerBound, bucketUpperBound time.Duration, samples int64) {
elem := capturedHistogramDurationSamples{
name, tags, bucketLowerBound, bucketUpperBound, samples,
}
r.histogramDurationSamples = append(r.histogramDurationSamples, elem)
},
}
}
func (r *capturingStatsReporter) Capabilities() tally.Capabilities {
r.capabilities++
return r
}
func (r *capturingStatsReporter) Reporting() bool {
return true
}
func (r *capturingStatsReporter) Tagging() bool {
return true
}
func (r *capturingStatsReporter) Flush() {
r.flush++
}
type cachedCount struct {
fn func(value int64)
}
func (c cachedCount) ReportCount(value int64) {
c.fn(value)
}
type cachedGauge struct {
fn func(value float64)
}
func (c cachedGauge) ReportGauge(value float64) {
c.fn(value)
}
type cachedTimer struct {
fn func(value time.Duration)
}
func (c cachedTimer) ReportTimer(value time.Duration) {
c.fn(value)
}
type cachedHistogram struct {
valueFn func(bucketLowerBound, bucketUpperBound float64, samples int64)
durationFn func(bucketLowerBound, bucketUpperBound time.Duration, samples int64)
}
func (h cachedHistogram) ValueBucket(
bucketLowerBound, bucketUpperBound float64,
) tally.CachedHistogramBucket {
return cachedHistogramValueBucket{&h, bucketLowerBound, bucketUpperBound}
}
func (h cachedHistogram) DurationBucket(
bucketLowerBound, bucketUpperBound time.Duration,
) tally.CachedHistogramBucket {
return cachedHistogramDurationBucket{&h, bucketLowerBound, bucketUpperBound}
}
type cachedHistogramValueBucket struct {
histogram *cachedHistogram
bucketLowerBound float64
bucketUpperBound float64
}
func (b cachedHistogramValueBucket) ReportSamples(v int64) {
b.histogram.valueFn(b.bucketLowerBound, b.bucketUpperBound, v)
}
type cachedHistogramDurationBucket struct {
histogram *cachedHistogram
bucketLowerBound time.Duration
bucketUpperBound time.Duration
}
func (b cachedHistogramDurationBucket) ReportSamples(v int64) {
b.histogram.durationFn(b.bucketLowerBound, b.bucketUpperBound, v)
}
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