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rpc_util_test.go
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/
rpc_util_test.go
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/*
*
* Copyright 2014 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package grpc
import (
"bytes"
"compress/gzip"
"io"
"math"
"reflect"
"testing"
"google.golang.org/grpc/codes"
protoenc "google.golang.org/grpc/encoding/proto"
"google.golang.org/grpc/internal/testutils"
"google.golang.org/grpc/internal/transport"
"google.golang.org/grpc/mem"
"google.golang.org/grpc/status"
perfpb "google.golang.org/grpc/test/codec_perf"
"google.golang.org/protobuf/proto"
)
type fullReader struct {
data []byte
}
func (f *fullReader) ReadHeader(header []byte) error {
buf, err := f.Read(len(header))
defer buf.Free()
if err != nil {
return err
}
buf.CopyTo(header)
return nil
}
func (f *fullReader) Read(n int) (mem.BufferSlice, error) {
if len(f.data) == 0 {
return nil, io.EOF
}
if len(f.data) < n {
data := f.data
f.data = nil
return mem.BufferSlice{mem.NewBuffer(&data, nil)}, io.ErrUnexpectedEOF
}
buf := f.data[:n]
f.data = f.data[n:]
return mem.BufferSlice{mem.NewBuffer(&buf, nil)}, nil
}
var _ CallOption = EmptyCallOption{} // ensure EmptyCallOption implements the interface
func (s) TestSimpleParsing(t *testing.T) {
bigMsg := bytes.Repeat([]byte{'x'}, 1<<24)
for _, test := range []struct {
// input
p []byte
// outputs
err error
b []byte
pt payloadFormat
}{
{nil, io.EOF, nil, compressionNone},
{[]byte{0, 0, 0, 0, 0}, nil, nil, compressionNone},
{[]byte{0, 0, 0, 0, 1, 'a'}, nil, []byte{'a'}, compressionNone},
{[]byte{1, 0}, io.ErrUnexpectedEOF, nil, compressionNone},
{[]byte{0, 0, 0, 0, 10, 'a'}, io.ErrUnexpectedEOF, nil, compressionNone},
// Check that messages with length >= 2^24 are parsed.
{append([]byte{0, 1, 0, 0, 0}, bigMsg...), nil, bigMsg, compressionNone},
} {
buf := &fullReader{test.p}
parser := &parser{r: buf, bufferPool: mem.DefaultBufferPool()}
pt, b, err := parser.recvMsg(math.MaxInt32)
if err != test.err || !bytes.Equal(b.Materialize(), test.b) || pt != test.pt {
t.Fatalf("parser{%v}.recvMsg(_) = %v, %v, %v\nwant %v, %v, %v", test.p, pt, b, err, test.pt, test.b, test.err)
}
}
}
func (s) TestMultipleParsing(t *testing.T) {
// Set a byte stream consists of 3 messages with their headers.
p := []byte{0, 0, 0, 0, 1, 'a', 0, 0, 0, 0, 2, 'b', 'c', 0, 0, 0, 0, 1, 'd'}
b := &fullReader{p}
parser := &parser{r: b, bufferPool: mem.DefaultBufferPool()}
wantRecvs := []struct {
pt payloadFormat
data []byte
}{
{compressionNone, []byte("a")},
{compressionNone, []byte("bc")},
{compressionNone, []byte("d")},
}
for i, want := range wantRecvs {
pt, data, err := parser.recvMsg(math.MaxInt32)
if err != nil || pt != want.pt || !reflect.DeepEqual(data.Materialize(), want.data) {
t.Fatalf("after %d calls, parser{%v}.recvMsg(_) = %v, %v, %v\nwant %v, %v, <nil>",
i, p, pt, data, err, want.pt, want.data)
}
}
pt, data, err := parser.recvMsg(math.MaxInt32)
if err != io.EOF {
t.Fatalf("after %d recvMsgs calls, parser{%v}.recvMsg(_) = %v, %v, %v\nwant _, _, %v",
len(wantRecvs), p, pt, data, err, io.EOF)
}
}
func (s) TestEncode(t *testing.T) {
for _, test := range []struct {
// input
msg proto.Message
// outputs
hdr []byte
data []byte
err error
}{
{nil, []byte{0, 0, 0, 0, 0}, []byte{}, nil},
} {
data, err := encode(getCodec(protoenc.Name), test.msg)
if err != test.err || !bytes.Equal(data.Materialize(), test.data) {
t.Errorf("encode(_, %v) = %v, %v; want %v, %v", test.msg, data, err, test.data, test.err)
continue
}
if hdr, _ := msgHeader(data, nil, compressionNone); !bytes.Equal(hdr, test.hdr) {
t.Errorf("msgHeader(%v, false) = %v; want %v", data, hdr, test.hdr)
}
}
}
func (s) TestCompress(t *testing.T) {
bestCompressor, err := NewGZIPCompressorWithLevel(gzip.BestCompression)
if err != nil {
t.Fatalf("Could not initialize gzip compressor with best compression.")
}
bestSpeedCompressor, err := NewGZIPCompressorWithLevel(gzip.BestSpeed)
if err != nil {
t.Fatalf("Could not initialize gzip compressor with best speed compression.")
}
defaultCompressor, err := NewGZIPCompressorWithLevel(gzip.BestSpeed)
if err != nil {
t.Fatalf("Could not initialize gzip compressor with default compression.")
}
level5, err := NewGZIPCompressorWithLevel(5)
if err != nil {
t.Fatalf("Could not initialize gzip compressor with level 5 compression.")
}
for _, test := range []struct {
// input
data []byte
cp Compressor
dc Decompressor
// outputs
err error
}{
{make([]byte, 1024), NewGZIPCompressor(), NewGZIPDecompressor(), nil},
{make([]byte, 1024), bestCompressor, NewGZIPDecompressor(), nil},
{make([]byte, 1024), bestSpeedCompressor, NewGZIPDecompressor(), nil},
{make([]byte, 1024), defaultCompressor, NewGZIPDecompressor(), nil},
{make([]byte, 1024), level5, NewGZIPDecompressor(), nil},
} {
b := new(bytes.Buffer)
if err := test.cp.Do(b, test.data); err != test.err {
t.Fatalf("Compressor.Do(_, %v) = %v, want %v", test.data, err, test.err)
}
if b.Len() >= len(test.data) {
t.Fatalf("The compressor fails to compress data.")
}
if p, err := test.dc.Do(b); err != nil || !bytes.Equal(test.data, p) {
t.Fatalf("Decompressor.Do(%v) = %v, %v, want %v, <nil>", b, p, err, test.data)
}
}
}
func (s) TestToRPCErr(t *testing.T) {
for _, test := range []struct {
// input
errIn error
// outputs
errOut error
}{
{transport.ErrConnClosing, status.Error(codes.Unavailable, transport.ErrConnClosing.Desc)},
{io.ErrUnexpectedEOF, status.Error(codes.Internal, io.ErrUnexpectedEOF.Error())},
} {
err := toRPCErr(test.errIn)
if _, ok := status.FromError(err); !ok {
t.Errorf("toRPCErr{%v} returned type %T, want %T", test.errIn, err, status.Error)
}
if !testutils.StatusErrEqual(err, test.errOut) {
t.Errorf("toRPCErr{%v} = %v \nwant %v", test.errIn, err, test.errOut)
}
}
}
// bmEncode benchmarks encoding a Protocol Buffer message containing mSize
// bytes.
func bmEncode(b *testing.B, mSize int) {
cdc := getCodec(protoenc.Name)
msg := &perfpb.Buffer{Body: make([]byte, mSize)}
encodeData, _ := encode(cdc, msg)
encodedSz := int64(len(encodeData))
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
encode(cdc, msg)
}
b.SetBytes(encodedSz)
}
func BenchmarkEncode1B(b *testing.B) {
bmEncode(b, 1)
}
func BenchmarkEncode1KiB(b *testing.B) {
bmEncode(b, 1024)
}
func BenchmarkEncode8KiB(b *testing.B) {
bmEncode(b, 8*1024)
}
func BenchmarkEncode64KiB(b *testing.B) {
bmEncode(b, 64*1024)
}
func BenchmarkEncode512KiB(b *testing.B) {
bmEncode(b, 512*1024)
}
func BenchmarkEncode1MiB(b *testing.B) {
bmEncode(b, 1024*1024)
}
// bmCompressor benchmarks a compressor of a Protocol Buffer message containing
// mSize bytes.
func bmCompressor(b *testing.B, mSize int, cp Compressor) {
payload := make([]byte, mSize)
cBuf := bytes.NewBuffer(make([]byte, mSize))
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
cp.Do(cBuf, payload)
cBuf.Reset()
}
}
func BenchmarkGZIPCompressor1B(b *testing.B) {
bmCompressor(b, 1, NewGZIPCompressor())
}
func BenchmarkGZIPCompressor1KiB(b *testing.B) {
bmCompressor(b, 1024, NewGZIPCompressor())
}
func BenchmarkGZIPCompressor8KiB(b *testing.B) {
bmCompressor(b, 8*1024, NewGZIPCompressor())
}
func BenchmarkGZIPCompressor64KiB(b *testing.B) {
bmCompressor(b, 64*1024, NewGZIPCompressor())
}
func BenchmarkGZIPCompressor512KiB(b *testing.B) {
bmCompressor(b, 512*1024, NewGZIPCompressor())
}
func BenchmarkGZIPCompressor1MiB(b *testing.B) {
bmCompressor(b, 1024*1024, NewGZIPCompressor())
}