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package basictracer
import (
"bytes"
"fmt"
"net/http"
"testing"
opentracing "github.com/opentracing/opentracing-go"
)
var tags []string
func init() {
tags = make([]string, 1000)
for j := 0; j < len(tags); j++ {
tags[j] = fmt.Sprintf("%d", randomID())
}
}
func executeOps(sp opentracing.Span, numEvent, numTag, numItems int) {
for j := 0; j < numEvent; j++ {
sp.LogEvent("event")
}
for j := 0; j < numTag; j++ {
sp.SetTag(tags[j], nil)
}
for j := 0; j < numItems; j++ {
sp.SetBaggageItem(tags[j], tags[j])
}
}
func benchmarkWithOps(b *testing.B, numEvent, numTag, numItems int) {
var r CountingRecorder
t := New(&r)
benchmarkWithOpsAndCB(b, func() opentracing.Span {
return t.StartSpan("test")
}, numEvent, numTag, numItems)
if int(r) != b.N {
b.Fatalf("missing traces: expected %d, got %d", b.N, r)
}
}
func benchmarkWithOpsAndCB(b *testing.B, create func() opentracing.Span,
numEvent, numTag, numItems int) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
sp := create()
executeOps(sp, numEvent, numTag, numItems)
sp.Finish()
}
b.StopTimer()
}
func BenchmarkSpan_Empty(b *testing.B) {
benchmarkWithOps(b, 0, 0, 0)
}
func BenchmarkSpan_100Events(b *testing.B) {
benchmarkWithOps(b, 100, 0, 0)
}
func BenchmarkSpan_1000Events(b *testing.B) {
benchmarkWithOps(b, 100, 0, 0)
}
func BenchmarkSpan_100Tags(b *testing.B) {
benchmarkWithOps(b, 0, 100, 0)
}
func BenchmarkSpan_1000Tags(b *testing.B) {
benchmarkWithOps(b, 0, 100, 0)
}
func BenchmarkSpan_100BaggageItems(b *testing.B) {
benchmarkWithOps(b, 0, 0, 100)
}
func BenchmarkTrimmedSpan_100Events_100Tags_100BaggageItems(b *testing.B) {
var r CountingRecorder
opts := DefaultOptions()
opts.TrimUnsampledSpans = true
opts.ShouldSample = func(_ uint64) bool { return false }
opts.Recorder = &r
t := NewWithOptions(opts)
benchmarkWithOpsAndCB(b, func() opentracing.Span {
sp := t.StartSpan("test")
return sp
}, 100, 100, 100)
if int(r) != b.N {
b.Fatalf("missing traces: expected %d, got %d", b.N, r)
}
}
func benchmarkInject(b *testing.B, format opentracing.BuiltinFormat, numItems int) {
var r CountingRecorder
tracer := New(&r)
sp := tracer.StartSpan("testing")
executeOps(sp, 0, 0, numItems)
var carrier interface{}
switch format {
case opentracing.TextMap:
carrier = opentracing.HTTPHeadersCarrier(http.Header{})
case opentracing.Binary:
carrier = &bytes.Buffer{}
default:
b.Fatalf("unhandled format %d", format)
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
err := tracer.Inject(sp.Context(), format, carrier)
if err != nil {
b.Fatal(err)
}
}
}
func benchmarkExtract(b *testing.B, format opentracing.BuiltinFormat, numItems int) {
var r CountingRecorder
tracer := New(&r)
sp := tracer.StartSpan("testing")
executeOps(sp, 0, 0, numItems)
var carrier interface{}
switch format {
case opentracing.TextMap:
carrier = opentracing.HTTPHeadersCarrier(http.Header{})
case opentracing.Binary:
carrier = &bytes.Buffer{}
default:
b.Fatalf("unhandled format %d", format)
}
if err := tracer.Inject(sp.Context(), format, carrier); err != nil {
b.Fatal(err)
}
// We create a new bytes.Buffer every time for tracer.Extract() to keep
// this benchmark realistic.
var rawBinaryBytes []byte
if format == opentracing.Binary {
rawBinaryBytes = carrier.(*bytes.Buffer).Bytes()
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
if format == opentracing.Binary {
carrier = bytes.NewBuffer(rawBinaryBytes)
}
_, err := tracer.Extract(format, carrier)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkInject_TextMap_Empty(b *testing.B) {
benchmarkInject(b, opentracing.TextMap, 0)
}
func BenchmarkInject_TextMap_100BaggageItems(b *testing.B) {
benchmarkInject(b, opentracing.TextMap, 100)
}
func BenchmarkInject_Binary_Empty(b *testing.B) {
benchmarkInject(b, opentracing.Binary, 0)
}
func BenchmarkInject_Binary_100BaggageItems(b *testing.B) {
benchmarkInject(b, opentracing.Binary, 100)
}
func BenchmarkJoin_TextMap_Empty(b *testing.B) {
benchmarkExtract(b, opentracing.TextMap, 0)
}
func BenchmarkJoin_TextMap_100BaggageItems(b *testing.B) {
benchmarkExtract(b, opentracing.TextMap, 100)
}
func BenchmarkJoin_Binary_Empty(b *testing.B) {
benchmarkExtract(b, opentracing.Binary, 0)
}
func BenchmarkJoin_Binary_100BaggageItems(b *testing.B) {
benchmarkExtract(b, opentracing.Binary, 100)
}
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