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package metrics
import (
"io/ioutil"
"log"
"reflect"
"sync/atomic"
"testing"
"time"
)
func TestDefaultConfig(t *testing.T) {
conf := DefaultConfig("service")
if conf.ServiceName != "service" {
t.Fatalf("Bad name")
}
if conf.HostName == "" {
t.Fatalf("missing hostname")
}
if !conf.EnableHostname || !conf.EnableRuntimeMetrics {
t.Fatalf("expect true")
}
if conf.EnableTypePrefix {
t.Fatalf("expect false")
}
if conf.TimerGranularity != time.Millisecond {
t.Fatalf("bad granularity")
}
if conf.ProfileInterval != time.Second {
t.Fatalf("bad interval")
}
}
func Test_GlobalMetrics(t *testing.T) {
var tests = []struct {
desc string
key []string
val float32
fn func([]string, float32)
}{
{"SetGauge", []string{"test"}, 42, SetGauge},
{"EmitKey", []string{"test"}, 42, EmitKey},
{"IncrCounter", []string{"test"}, 42, IncrCounter},
{"AddSample", []string{"test"}, 42, AddSample},
}
for _, tt := range tests {
t.Run(tt.desc, func(t *testing.T) {
s := &MockSink{}
globalMetrics.Store(&Metrics{Config: Config{FilterDefault: true}, sink: s})
tt.fn(tt.key, tt.val)
if got, want := s.keys[0], tt.key; !reflect.DeepEqual(got, want) {
t.Fatalf("got key %s want %s", got, want)
}
if got, want := s.vals[0], tt.val; !reflect.DeepEqual(got, want) {
t.Fatalf("got val %v want %v", got, want)
}
})
}
}
func Test_GlobalMetrics_Labels(t *testing.T) {
labels := []Label{{"a", "b"}}
var tests = []struct {
desc string
key []string
val float32
fn func([]string, float32, []Label)
labels []Label
}{
{"SetGaugeWithLabels", []string{"test"}, 42, SetGaugeWithLabels, labels},
{"IncrCounterWithLabels", []string{"test"}, 42, IncrCounterWithLabels, labels},
{"AddSampleWithLabels", []string{"test"}, 42, AddSampleWithLabels, labels},
}
for _, tt := range tests {
t.Run(tt.desc, func(t *testing.T) {
s := &MockSink{}
globalMetrics.Store(&Metrics{Config: Config{FilterDefault: true}, sink: s})
tt.fn(tt.key, tt.val, tt.labels)
if got, want := s.keys[0], tt.key; !reflect.DeepEqual(got, want) {
t.Fatalf("got key %s want %s", got, want)
}
if got, want := s.vals[0], tt.val; !reflect.DeepEqual(got, want) {
t.Fatalf("got val %v want %v", got, want)
}
if got, want := s.labels[0], tt.labels; !reflect.DeepEqual(got, want) {
t.Fatalf("got val %s want %s", got, want)
}
})
}
}
func Test_GlobalMetrics_DefaultLabels(t *testing.T) {
config := Config{
HostName: "host1",
ServiceName: "redis",
EnableHostnameLabel: true,
EnableServiceLabel: true,
FilterDefault: true,
}
labels := []Label{
{"host", config.HostName},
{"service", config.ServiceName},
}
var tests = []struct {
desc string
key []string
val float32
fn func([]string, float32, []Label)
labels []Label
}{
{"SetGaugeWithLabels", []string{"test"}, 42, SetGaugeWithLabels, labels},
{"IncrCounterWithLabels", []string{"test"}, 42, IncrCounterWithLabels, labels},
{"AddSampleWithLabels", []string{"test"}, 42, AddSampleWithLabels, labels},
}
for _, tt := range tests {
t.Run(tt.desc, func(t *testing.T) {
s := &MockSink{}
globalMetrics.Store(&Metrics{Config: config, sink: s})
tt.fn(tt.key, tt.val, nil)
if got, want := s.keys[0], tt.key; !reflect.DeepEqual(got, want) {
t.Fatalf("got key %s want %s", got, want)
}
if got, want := s.vals[0], tt.val; !reflect.DeepEqual(got, want) {
t.Fatalf("got val %v want %v", got, want)
}
if got, want := s.labels[0], tt.labels; !reflect.DeepEqual(got, want) {
t.Fatalf("got val %s want %s", got, want)
}
})
}
}
func Test_GlobalMetrics_MeasureSince(t *testing.T) {
s := &MockSink{}
m := &Metrics{sink: s, Config: Config{TimerGranularity: time.Millisecond, FilterDefault: true}}
globalMetrics.Store(m)
k := []string{"test"}
now := time.Now()
MeasureSince(k, now)
if !reflect.DeepEqual(s.keys[0], k) {
t.Fatalf("key not equal")
}
if s.vals[0] > 0.1 {
t.Fatalf("val too large %v", s.vals[0])
}
labels := []Label{{"a", "b"}}
MeasureSinceWithLabels(k, now, labels)
if got, want := s.keys[1], k; !reflect.DeepEqual(got, want) {
t.Fatalf("got key %s want %s", got, want)
}
if s.vals[1] > 0.5 {
t.Fatalf("val too large %v", s.vals[0])
}
if got, want := s.labels[1], labels; !reflect.DeepEqual(got, want) {
t.Fatalf("got val %s want %s", got, want)
}
}
func Test_GlobalMetrics_UpdateFilter(t *testing.T) {
globalMetrics.Store(&Metrics{Config: Config{
AllowedPrefixes: []string{"a"},
BlockedPrefixes: []string{"b"},
AllowedLabels: []string{"1"},
BlockedLabels: []string{"2"},
}})
UpdateFilterAndLabels([]string{"c"}, []string{"d"}, []string{"3"}, []string{"4"})
m := globalMetrics.Load().(*Metrics)
if m.AllowedPrefixes[0] != "c" {
t.Fatalf("bad: %v", m.AllowedPrefixes)
}
if m.BlockedPrefixes[0] != "d" {
t.Fatalf("bad: %v", m.BlockedPrefixes)
}
if m.AllowedLabels[0] != "3" {
t.Fatalf("bad: %v", m.AllowedPrefixes)
}
if m.BlockedLabels[0] != "4" {
t.Fatalf("bad: %v", m.AllowedPrefixes)
}
if _, ok := m.allowedLabels["3"]; !ok {
t.Fatalf("bad: %v", m.allowedLabels)
}
if _, ok := m.blockedLabels["4"]; !ok {
t.Fatalf("bad: %v", m.blockedLabels)
}
}
func Test_GlobalMetrics_Shutdown(t *testing.T) {
s := &MockSink{}
m := &Metrics{sink: s}
globalMetrics.Store(m)
Shutdown()
loaded := globalMetrics.Load()
metrics, ok := loaded.(*Metrics)
if !ok {
t.Fatalf("Expected globalMetrics to contain a Metrics pointer, but found: %v", loaded)
}
if metrics == m {
t.Errorf("Calling shutdown should have replaced the Metrics struct stored in globalMetrics")
}
if !s.shutdown {
t.Errorf("Expected Shutdown to have been called on MockSink")
}
}
// Benchmark_GlobalMetrics_Direct/direct-8 5000000 278 ns/op
// Benchmark_GlobalMetrics_Direct/atomic.Value-8 5000000 235 ns/op
func Benchmark_GlobalMetrics_Direct(b *testing.B) {
log.SetOutput(ioutil.Discard)
s := &MockSink{}
m := &Metrics{sink: s}
var v atomic.Value
v.Store(m)
k := []string{"test"}
b.Run("direct", func(b *testing.B) {
for i := 0; i < b.N; i++ {
m.IncrCounter(k, 1)
}
})
b.Run("atomic.Value", func(b *testing.B) {
for i := 0; i < b.N; i++ {
v.Load().(*Metrics).IncrCounter(k, 1)
}
})
// do something with m so that the compiler does not optimize this away
b.Logf("%d", m.lastNumGC)
}
|
