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package solomon
import (
"encoding/json"
"fmt"
"reflect"
"sync"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/atomic"
)
func TestRegistry_Gather(t *testing.T) {
r := &Registry{
separator: ".",
prefix: "myprefix",
tags: make(map[string]string),
subregistries: make(map[string]*Registry),
metrics: func() *sync.Map {
metrics := map[string]Metric{
"myprefix.mycounter": &Counter{
name: "myprefix.mycounter",
tags: map[string]string{"ololo": "trololo"},
value: *atomic.NewInt64(42),
},
"myprefix.mygauge": &Gauge{
name: "myprefix.mygauge",
tags: map[string]string{"shimba": "boomba"},
value: *atomic.NewFloat64(14.89),
},
"myprefix.mytimer": &Timer{
name: "myprefix.mytimer",
tags: map[string]string{"looken": "tooken"},
value: *atomic.NewDuration(1456 * time.Millisecond),
},
"myprefix.myhistogram": &Histogram{
name: "myprefix.myhistogram",
tags: map[string]string{"chicken": "cooken"},
bucketBounds: []float64{1, 2, 3},
bucketValues: []int64{1, 2, 1},
infValue: *atomic.NewInt64(1),
},
}
sm := new(sync.Map)
for k, v := range metrics {
sm.Store(k, v)
}
return sm
}(),
}
s, err := r.Gather()
assert.NoError(t, err)
expected := &Metrics{}
r.metrics.Range(func(_, s interface{}) bool {
expected.metrics = append(expected.metrics, s.(Metric))
return true
})
opts := cmp.Options{
cmp.AllowUnexported(Metrics{}, Counter{}, Gauge{}, Timer{}, Histogram{}),
cmpopts.IgnoreUnexported(sync.Mutex{}, atomic.Duration{}, atomic.Int64{}, atomic.Float64{}),
// this will sort both slices for latest tests as well
cmpopts.SortSlices(func(x, y Metric) bool {
return x.Name() < y.Name()
}),
}
assert.True(t, cmp.Equal(expected, s, opts...), cmp.Diff(expected, s, opts...))
for _, sen := range s.metrics {
var expectedMetric Metric
for _, expSen := range expected.metrics {
if expSen.Name() == sen.Name() {
expectedMetric = expSen
break
}
}
require.NotNil(t, expectedMetric)
assert.NotEqual(t, fmt.Sprintf("%p", expectedMetric), fmt.Sprintf("%p", sen))
assert.IsType(t, expectedMetric, sen)
switch st := sen.(type) {
case *Counter:
assert.NotEqual(t, fmt.Sprintf("%p", expectedMetric.(*Counter)), fmt.Sprintf("%p", st))
case *Gauge:
assert.NotEqual(t, fmt.Sprintf("%p", expectedMetric.(*Gauge)), fmt.Sprintf("%p", st))
case *Timer:
assert.NotEqual(t, fmt.Sprintf("%p", expectedMetric.(*Timer)), fmt.Sprintf("%p", st))
case *Histogram:
assert.NotEqual(t, fmt.Sprintf("%p", expectedMetric.(*Histogram)), fmt.Sprintf("%p", st))
default:
t.Fatalf("unexpected metric type: %T", sen)
}
}
}
func TestDoubleRegistration(t *testing.T) {
r := NewRegistry(NewRegistryOpts())
c0 := r.Counter("counter")
c1 := r.Counter("counter")
require.Equal(t, c0, c1)
g0 := r.Gauge("counter")
g1 := r.Gauge("counter")
require.Equal(t, g0, g1)
c2 := r.Counter("counter")
require.NotEqual(t, reflect.ValueOf(c0).Elem().UnsafeAddr(), reflect.ValueOf(c2).Elem().UnsafeAddr())
}
func TestSubregistry(t *testing.T) {
r := NewRegistry(NewRegistryOpts())
r0 := r.WithPrefix("one")
r1 := r0.WithPrefix("two")
r2 := r0.WithTags(map[string]string{"foo": "bar"})
_ = r0.Counter("counter")
_ = r1.Counter("counter")
_ = r2.Counter("counter")
}
func TestSubregistry_TagAndPrefixReorder(t *testing.T) {
r := NewRegistry(NewRegistryOpts())
r0 := r.WithPrefix("one")
r1 := r.WithTags(map[string]string{"foo": "bar"})
r3 := r0.WithTags(map[string]string{"foo": "bar"})
r4 := r1.WithPrefix("one")
require.True(t, r3 == r4)
}
func TestRatedRegistry(t *testing.T) {
r := NewRegistry(NewRegistryOpts().SetRated(true))
s := r.Counter("counter")
b, _ := json.Marshal(s)
expected := []byte(`{"type":"RATE","labels":{"sensor":"counter"},"value":0}`)
assert.Equal(t, expected, b)
}
func TestNameTagRegistry(t *testing.T) {
r := NewRegistry(NewRegistryOpts().SetUseNameTag(true))
s := r.Counter("counter")
b, _ := json.Marshal(s)
expected := []byte(`{"type":"COUNTER","labels":{"name":"counter"},"value":0}`)
assert.Equal(t, expected, b)
sr := r.WithTags(map[string]string{"foo": "bar"})
ssr := sr.Counter("sub_counter")
b1, _ := json.Marshal(ssr)
expected1 := []byte(`{"type":"COUNTER","labels":{"foo":"bar","name":"sub_counter"},"value":0}`)
assert.Equal(t, expected1, b1)
}
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