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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package encoding_test
import (
"fmt"
"testing"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/encoding/prototext"
"google.golang.org/protobuf/reflect/protoreflect"
tpb "google.golang.org/protobuf/internal/testprotos/test"
)
// The results of these microbenchmarks are unlikely to correspond well
// to real world performance. They are mainly useful as a quick check to
// detect unexpected regressions and for profiling specific cases.
const maxRecurseLevel = 3
func makeProto() *tpb.TestAllTypes {
m := &tpb.TestAllTypes{}
fillMessage(m.ProtoReflect(), 0)
return m
}
func fillMessage(m protoreflect.Message, level int) {
if level > maxRecurseLevel {
return
}
fieldDescs := m.Descriptor().Fields()
for i := 0; i < fieldDescs.Len(); i++ {
fd := fieldDescs.Get(i)
switch {
case fd.IsList():
setList(m.Mutable(fd).List(), fd, level)
case fd.IsMap():
setMap(m.Mutable(fd).Map(), fd, level)
default:
setScalarField(m, fd, level)
}
}
}
func setScalarField(m protoreflect.Message, fd protoreflect.FieldDescriptor, level int) {
switch fd.Kind() {
case protoreflect.MessageKind, protoreflect.GroupKind:
val := m.NewField(fd)
fillMessage(val.Message(), level+1)
m.Set(fd, val)
default:
m.Set(fd, scalarField(fd.Kind()))
}
}
func scalarField(kind protoreflect.Kind) protoreflect.Value {
switch kind {
case protoreflect.BoolKind:
return protoreflect.ValueOfBool(true)
case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind:
return protoreflect.ValueOfInt32(1 << 30)
case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
return protoreflect.ValueOfInt64(1 << 30)
case protoreflect.Uint32Kind, protoreflect.Fixed32Kind:
return protoreflect.ValueOfUint32(1 << 30)
case protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
return protoreflect.ValueOfUint64(1 << 30)
case protoreflect.FloatKind:
return protoreflect.ValueOfFloat32(3.14159265)
case protoreflect.DoubleKind:
return protoreflect.ValueOfFloat64(3.14159265)
case protoreflect.BytesKind:
return protoreflect.ValueOfBytes([]byte("hello world"))
case protoreflect.StringKind:
return protoreflect.ValueOfString("hello world")
case protoreflect.EnumKind:
return protoreflect.ValueOfEnum(42)
}
panic(fmt.Sprintf("FieldDescriptor.Kind %v is not valid", kind))
}
func setList(list protoreflect.List, fd protoreflect.FieldDescriptor, level int) {
switch fd.Kind() {
case protoreflect.MessageKind, protoreflect.GroupKind:
for i := 0; i < 10; i++ {
val := list.NewElement()
fillMessage(val.Message(), level+1)
list.Append(val)
}
default:
for i := 0; i < 100; i++ {
list.Append(scalarField(fd.Kind()))
}
}
}
func setMap(mmap protoreflect.Map, fd protoreflect.FieldDescriptor, level int) {
fields := fd.Message().Fields()
keyDesc := fields.ByNumber(1)
valDesc := fields.ByNumber(2)
pkey := scalarField(keyDesc.Kind())
switch kind := valDesc.Kind(); kind {
case protoreflect.MessageKind, protoreflect.GroupKind:
val := mmap.NewValue()
fillMessage(val.Message(), level+1)
mmap.Set(pkey.MapKey(), val)
default:
mmap.Set(pkey.MapKey(), scalarField(kind))
}
}
func BenchmarkTextEncode(b *testing.B) {
m := makeProto()
for i := 0; i < b.N; i++ {
_, err := prototext.MarshalOptions{Indent: " "}.Marshal(m)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkTextDecode(b *testing.B) {
m := makeProto()
in, err := prototext.MarshalOptions{Indent: " "}.Marshal(m)
if err != nil {
b.Fatal(err)
}
for i := 0; i < b.N; i++ {
m := &tpb.TestAllTypes{}
if err := prototext.Unmarshal(in, m); err != nil {
b.Fatal(err)
}
}
}
func BenchmarkJSONEncode(b *testing.B) {
m := makeProto()
for i := 0; i < b.N; i++ {
_, err := protojson.MarshalOptions{Indent: " "}.Marshal(m)
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkJSONDecode(b *testing.B) {
m := makeProto()
out, err := protojson.MarshalOptions{Indent: " "}.Marshal(m)
if err != nil {
b.Fatal(err)
}
for i := 0; i < b.N; i++ {
m := &tpb.TestAllTypes{}
if err := protojson.Unmarshal(out, m); err != nil {
b.Fatal(err)
}
}
}
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