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Drop sampling rate when aggregation is enabled
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Mixing sampling rate and aggregation doesn't make sens and could be
erroneous if users sends the same metrics with different sampling rate.
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@hush-hush
hush-hush committed Oct 15, 2020
1 parent c7df0ea commit 1e50f7d
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Showing 5 changed files with 42 additions and 61 deletions.
12 changes: 6 additions & 6 deletions statsd/aggregator.go
View file
Expand Up @@ -127,7 +127,7 @@ func getContext(name string, tags []string) string {
return name + ":" + strings.Join(tags, ",")
}

func (a *aggregator) count(name string, value int64, tags []string, rate float64) error {
func (a *aggregator) count(name string, value int64, tags []string) error {
context := getContext(name, tags)
a.countsM.RLock()
if count, found := a.counts[context]; found {
Expand All @@ -138,12 +138,12 @@ func (a *aggregator) count(name string, value int64, tags []string, rate float64
a.countsM.RUnlock()

a.countsM.Lock()
a.counts[context] = newCountMetric(name, value, tags, rate)
a.counts[context] = newCountMetric(name, value, tags)
a.countsM.Unlock()
return nil
}

func (a *aggregator) gauge(name string, value float64, tags []string, rate float64) error {
func (a *aggregator) gauge(name string, value float64, tags []string) error {
context := getContext(name, tags)
a.gaugesM.RLock()
if gauge, found := a.gauges[context]; found {
Expand All @@ -153,15 +153,15 @@ func (a *aggregator) gauge(name string, value float64, tags []string, rate float
}
a.gaugesM.RUnlock()

gauge := newGaugeMetric(name, value, tags, rate)
gauge := newGaugeMetric(name, value, tags)

a.gaugesM.Lock()
a.gauges[context] = gauge
a.gaugesM.Unlock()
return nil
}

func (a *aggregator) set(name string, value string, tags []string, rate float64) error {
func (a *aggregator) set(name string, value string, tags []string) error {
context := getContext(name, tags)
a.setsM.RLock()
if set, found := a.sets[context]; found {
Expand All @@ -172,7 +172,7 @@ func (a *aggregator) set(name string, value string, tags []string, rate float64)
a.setsM.RUnlock()

a.setsM.Lock()
a.sets[context] = newSetMetric(name, value, tags, rate)
a.sets[context] = newSetMetric(name, value, tags)
a.setsM.Unlock()
return nil
}
38 changes: 19 additions & 19 deletions statsd/aggregator_test.go
View file
Expand Up @@ -14,27 +14,27 @@ func TestAggregatorSample(t *testing.T) {

tags := []string{"tag1", "tag2"}

a.gauge("gaugeTest", 21, tags, 1)
a.gauge("gaugeTest", 21, tags)
assert.Len(t, a.gauges, 1)
assert.Contains(t, a.gauges, "gaugeTest:tag1,tag2")

a.count("countTest", 21, tags, 1)
a.count("countTest", 21, tags)
assert.Len(t, a.counts, 1)
assert.Contains(t, a.counts, "countTest:tag1,tag2")

a.set("setTest", "value1", tags, 1)
a.set("setTest", "value1", tags)
assert.Len(t, a.sets, 1)
assert.Contains(t, a.sets, "setTest:tag1,tag2")

a.gauge("gaugeTest", 123, tags, 1)
a.gauge("gaugeTest", 123, tags)
assert.Len(t, a.gauges, 1)
assert.Contains(t, a.gauges, "gaugeTest:tag1,tag2")

a.count("countTest", 10, tags, 1)
a.count("countTest", 10, tags)
assert.Len(t, a.counts, 1)
assert.Contains(t, a.counts, "countTest:tag1,tag2")

a.set("setTest", "value1", tags, 1)
a.set("setTest", "value1", tags)
assert.Len(t, a.sets, 1)
assert.Contains(t, a.sets, "setTest:tag1,tag2")
}
Expand All @@ -44,18 +44,18 @@ func TestAggregatorFlush(t *testing.T) {

tags := []string{"tag1", "tag2"}

a.gauge("gaugeTest1", 21, tags, 1)
a.gauge("gaugeTest1", 10, tags, 1)
a.gauge("gaugeTest2", 15, tags, 1)
a.gauge("gaugeTest1", 21, tags)
a.gauge("gaugeTest1", 10, tags)
a.gauge("gaugeTest2", 15, tags)

a.count("countTest1", 21, tags, 1)
a.count("countTest1", 10, tags, 1)
a.count("countTest2", 1, tags, 1)
a.count("countTest1", 21, tags)
a.count("countTest1", 10, tags)
a.count("countTest2", 1, tags)

a.set("setTest1", "value1", tags, 1)
a.set("setTest1", "value1", tags, 1)
a.set("setTest1", "value2", tags, 1)
a.set("setTest2", "value1", tags, 1)
a.set("setTest1", "value1", tags)
a.set("setTest1", "value1", tags)
a.set("setTest1", "value2", tags)
a.set("setTest2", "value1", tags)

metrics := a.flushMetrics()

Expand Down Expand Up @@ -143,9 +143,9 @@ func TestAggregatorFlushConcurrency(t *testing.T) {
go func() {
defer wg.Done()

a.gauge("gaugeTest1", 21, tags, 1)
a.count("countTest1", 21, tags, 1)
a.set("setTest1", "value1", tags, 1)
a.gauge("gaugeTest1", 21, tags)
a.count("countTest1", 21, tags)
a.set("setTest1", "value1", tags)
}()
}

Expand Down
16 changes: 5 additions & 11 deletions statsd/metrics.go
View file
Expand Up @@ -17,15 +17,13 @@ type countMetric struct {
value int64
name string
tags []string
rate float64
}

func newCountMetric(name string, value int64, tags []string, rate float64) *countMetric {
func newCountMetric(name string, value int64, tags []string) *countMetric {
return &countMetric{
value: value,
name: name,
tags: tags,
rate: rate,
}
}

Expand All @@ -38,7 +36,7 @@ func (c *countMetric) flushUnsafe() metric {
metricType: count,
name: c.name,
tags: c.tags,
rate: c.rate,
rate: 1,
ivalue: c.value,
}
}
Expand All @@ -49,15 +47,13 @@ type gaugeMetric struct {
value uint64
name string
tags []string
rate float64
}

func newGaugeMetric(name string, value float64, tags []string, rate float64) *gaugeMetric {
func newGaugeMetric(name string, value float64, tags []string) *gaugeMetric {
return &gaugeMetric{
value: math.Float64bits(value),
name: name,
tags: tags,
rate: rate,
}
}

Expand All @@ -70,7 +66,7 @@ func (g *gaugeMetric) flushUnsafe() metric {
metricType: gauge,
name: g.name,
tags: g.tags,
rate: g.rate,
rate: 1,
fvalue: math.Float64frombits(g.value),
}
}
Expand All @@ -81,16 +77,14 @@ type setMetric struct {
data map[string]struct{}
name string
tags []string
rate float64
sync.Mutex
}

func newSetMetric(name string, value string, tags []string, rate float64) *setMetric {
func newSetMetric(name string, value string, tags []string) *setMetric {
set := &setMetric{
data: map[string]struct{}{},
name: name,
tags: tags,
rate: rate,
}
set.data[value] = struct{}{}
return set
Expand Down
31 changes: 9 additions & 22 deletions statsd/metrics_test.go
View file
Expand Up @@ -11,94 +11,84 @@ import (
)

func TestNewCountMetric(t *testing.T) {
c := newCountMetric("test", 21, []string{"tag1", "tag2"}, 1)
c := newCountMetric("test", 21, []string{"tag1", "tag2"})
assert.Equal(t, c.value, int64(21))
assert.Equal(t, c.name, "test")
assert.Equal(t, c.tags, []string{"tag1", "tag2"})
assert.Equal(t, c.rate, 1.0)
}

func TestCountMetricSample(t *testing.T) {
c := newCountMetric("test", 21, []string{"tag1", "tag2"}, 1)
c := newCountMetric("test", 21, []string{"tag1", "tag2"})
c.sample(12)
assert.Equal(t, c.value, int64(33))
assert.Equal(t, c.name, "test")
assert.Equal(t, c.tags, []string{"tag1", "tag2"})
assert.Equal(t, c.rate, 1.0)
}

func TestFlushUnsafeCountMetricSample(t *testing.T) {
c := newCountMetric("test", 21, []string{"tag1", "tag2"}, 1)
c := newCountMetric("test", 21, []string{"tag1", "tag2"})
m := c.flushUnsafe()
assert.Equal(t, m.metricType, count)
assert.Equal(t, m.ivalue, int64(21))
assert.Equal(t, m.name, "test")
assert.Equal(t, m.tags, []string{"tag1", "tag2"})
assert.Equal(t, m.rate, 1.0)

c.sample(12)
m = c.flushUnsafe()
assert.Equal(t, m.metricType, count)
assert.Equal(t, m.ivalue, int64(33))
assert.Equal(t, m.name, "test")
assert.Equal(t, m.tags, []string{"tag1", "tag2"})
assert.Equal(t, m.rate, 1.0)
}

func TestNewGaugeMetric(t *testing.T) {
g := newGaugeMetric("test", 21, []string{"tag1", "tag2"}, 1)
g := newGaugeMetric("test", 21, []string{"tag1", "tag2"})
assert.Equal(t, math.Float64frombits(g.value), float64(21))
assert.Equal(t, g.name, "test")
assert.Equal(t, g.tags, []string{"tag1", "tag2"})
assert.Equal(t, g.rate, 1.0)
}

func TestGaugeMetricSample(t *testing.T) {
g := newGaugeMetric("test", 21, []string{"tag1", "tag2"}, 1)
g := newGaugeMetric("test", 21, []string{"tag1", "tag2"})
g.sample(12)
assert.Equal(t, math.Float64frombits(g.value), float64(12))
assert.Equal(t, g.name, "test")
assert.Equal(t, g.tags, []string{"tag1", "tag2"})
assert.Equal(t, g.rate, 1.0)
}

func TestFlushUnsafeGaugeMetricSample(t *testing.T) {
g := newGaugeMetric("test", 21, []string{"tag1", "tag2"}, 1)
g := newGaugeMetric("test", 21, []string{"tag1", "tag2"})
m := g.flushUnsafe()
assert.Equal(t, m.metricType, gauge)
assert.Equal(t, m.fvalue, float64(21))
assert.Equal(t, m.name, "test")
assert.Equal(t, m.tags, []string{"tag1", "tag2"})
assert.Equal(t, m.rate, 1.0)

g.sample(12)
m = g.flushUnsafe()
assert.Equal(t, m.metricType, gauge)
assert.Equal(t, m.fvalue, float64(12))
assert.Equal(t, m.name, "test")
assert.Equal(t, m.tags, []string{"tag1", "tag2"})
assert.Equal(t, m.rate, 1.0)
}

func TestNewSetMetric(t *testing.T) {
s := newSetMetric("test", "value1", []string{"tag1", "tag2"}, 1)
s := newSetMetric("test", "value1", []string{"tag1", "tag2"})
assert.Equal(t, s.data, map[string]struct{}{"value1": struct{}{}})
assert.Equal(t, s.name, "test")
assert.Equal(t, s.tags, []string{"tag1", "tag2"})
assert.Equal(t, s.rate, 1.0)
}

func TestSetMetricSample(t *testing.T) {
s := newSetMetric("test", "value1", []string{"tag1", "tag2"}, 1)
s := newSetMetric("test", "value1", []string{"tag1", "tag2"})
s.sample("value2")
assert.Equal(t, s.data, map[string]struct{}{"value1": struct{}{}, "value2": struct{}{}})
assert.Equal(t, s.name, "test")
assert.Equal(t, s.tags, []string{"tag1", "tag2"})
assert.Equal(t, s.rate, 1.0)
}

func TestFlushUnsafeSetMetricSample(t *testing.T) {
s := newSetMetric("test", "value1", []string{"tag1", "tag2"}, 1)
s := newSetMetric("test", "value1", []string{"tag1", "tag2"})
m := s.flushUnsafe()

require.Len(t, m, 1)
Expand All @@ -107,7 +97,6 @@ func TestFlushUnsafeSetMetricSample(t *testing.T) {
assert.Equal(t, m[0].svalue, "value1")
assert.Equal(t, m[0].name, "test")
assert.Equal(t, m[0].tags, []string{"tag1", "tag2"})
assert.Equal(t, m[0].rate, 1.0)

s.sample("value1")
s.sample("value2")
Expand All @@ -122,10 +111,8 @@ func TestFlushUnsafeSetMetricSample(t *testing.T) {
assert.Equal(t, m[0].svalue, "value1")
assert.Equal(t, m[0].name, "test")
assert.Equal(t, m[0].tags, []string{"tag1", "tag2"})
assert.Equal(t, m[0].rate, 1.0)
assert.Equal(t, m[1].metricType, set)
assert.Equal(t, m[1].svalue, "value2")
assert.Equal(t, m[1].name, "test")
assert.Equal(t, m[1].tags, []string{"tag1", "tag2"})
assert.Equal(t, m[1].rate, 1.0)
}
6 changes: 3 additions & 3 deletions statsd/statsd.go
View file
Expand Up @@ -433,7 +433,7 @@ func (c *Client) Gauge(name string, value float64, tags []string, rate float64)
}
atomic.AddUint64(&c.metrics.TotalMetrics, 1)
if c.agg != nil {
return c.agg.gauge(name, value, tags, rate)
return c.agg.gauge(name, value, tags)
}
return c.send(metric{metricType: gauge, name: name, fvalue: value, tags: tags, rate: rate})
}
Expand All @@ -445,7 +445,7 @@ func (c *Client) Count(name string, value int64, tags []string, rate float64) er
}
atomic.AddUint64(&c.metrics.TotalMetrics, 1)
if c.agg != nil {
return c.agg.count(name, value, tags, rate)
return c.agg.count(name, value, tags)
}
return c.send(metric{metricType: count, name: name, ivalue: value, tags: tags, rate: rate})
}
Expand Down Expand Up @@ -485,7 +485,7 @@ func (c *Client) Set(name string, value string, tags []string, rate float64) err
}
atomic.AddUint64(&c.metrics.TotalMetrics, 1)
if c.agg != nil {
return c.agg.set(name, value, tags, rate)
return c.agg.set(name, value, tags)
}
return c.send(metric{metricType: set, name: name, svalue: value, tags: tags, rate: rate})
}
Expand Down

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