// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package storage
import (
"bytes"
"crypto/rand"
"encoding/binary"
"fmt"
"io"
"runtime"
"sync"
"testing"
"time"
)
/*
Tests TreeChunker by splitting and joining a random byte slice
*/
type test interface {
Fatalf(string, ...interface{})
Logf(string, ...interface{})
}
type chunkerTester struct {
inputs map[uint64][]byte
chunks map[string]*Chunk
t test
}
func (self *chunkerTester) Split(chunker Splitter, data io.Reader, size int64, chunkC chan *Chunk, swg *sync.WaitGroup, expectedError error) (key Key) {
// reset
self.chunks = make(map[string]*Chunk)
if self.inputs == nil {
self.inputs = make(map[uint64][]byte)
}
quitC := make(chan bool)
timeout := time.After(600 * time.Second)
if chunkC != nil {
go func() {
for {
select {
case <-timeout:
self.t.Fatalf("Join timeout error")
case <-quitC:
return
case chunk := <-chunkC:
// self.chunks = append(self.chunks, chunk)
self.chunks[chunk.Key.String()] = chunk
if chunk.wg != nil {
chunk.wg.Done()
}
}
}
}()
}
key, err := chunker.Split(data, size, chunkC, swg, nil)
if err != nil && expectedError == nil {
self.t.Fatalf("Split error: %v", err)
} else if expectedError != nil && (err == nil || err.Error() != expectedError.Error()) {
self.t.Fatalf("Not receiving the correct error! Expected %v, received %v", expectedError, err)
}
if chunkC != nil {
if swg != nil {
swg.Wait()
}
close(quitC)
}
return
}
func (self *chunkerTester) Join(chunker Chunker, key Key, c int, chunkC chan *Chunk, quitC chan bool) LazySectionReader {
// reset but not the chunks
reader := chunker.Join(key, chunkC)
timeout := time.After(600 * time.Second)
i := 0
go func() {
for {
select {
case <-timeout:
self.t.Fatalf("Join timeout error")
case chunk, ok := <-chunkC:
if !ok {
close(quitC)
return
}
// this just mocks the behaviour of a chunk store retrieval
stored, success := self.chunks[chunk.Key.String()]
if !success {
self.t.Fatalf("not found")
return
}
chunk.SData = stored.SData
chunk.Size = int64(binary.LittleEndian.Uint64(chunk.SData[0:8]))
close(chunk.C)
i++
}
}
}()
return reader
}
func testRandomBrokenData(splitter Splitter, n int, tester *chunkerTester) {
data := io.LimitReader(rand.Reader, int64(n))
brokendata := brokenLimitReader(data, n, n/2)
buf := make([]byte, n)
_, err := brokendata.Read(buf)
if err == nil || err.Error() != "Broken reader" {
tester.t.Fatalf("Broken reader is not broken, hence broken. Returns: %v", err)
}
data = io.LimitReader(rand.Reader, int64(n))
brokendata = brokenLimitReader(data, n, n/2)
chunkC := make(chan *Chunk, 1000)
swg := &sync.WaitGroup{}
key := tester.Split(splitter, brokendata, int64(n), chunkC, swg, fmt.Errorf("Broken reader"))
tester.t.Logf(" Key = %v\n", key)
}
func testRandomData(splitter Splitter, n int, tester *chunkerTester) {
if tester.inputs == nil {
tester.inputs = make(map[uint64][]byte)
}
input, found := tester.inputs[uint64(n)]
var data io.Reader
if !found {
data, input = testDataReaderAndSlice(n)
tester.inputs[uint64(n)] = input
} else {
data = io.LimitReader(bytes.NewReader(input), int64(n))
}
chunkC := make(chan *Chunk, 1000)
swg := &sync.WaitGroup{}
key := tester.Split(splitter, data, int64(n), chunkC, swg, nil)
tester.t.Logf(" Key = %v\n", key)
chunkC = make(chan *Chunk, 1000)
quitC := make(chan bool)
chunker := NewTreeChunker(NewChunkerParams())
reader := tester.Join(chunker, key, 0, chunkC, quitC)
output := make([]byte, n)
r, err := reader.Read(output)
if r != n || err != io.EOF {
tester.t.Fatalf("read error read: %v n = %v err = %v\n", r, n, err)
}
if input != nil {
if !bytes.Equal(output, input) {
tester.t.Fatalf("input and output mismatch\n IN: %v\nOUT: %v\n", input, output)
}
}
close(chunkC)
<-quitC
}
func TestRandomData(t *testing.T) {
// sizes := []int{123456}
sizes := []int{1, 60, 83, 179, 253, 1024, 4095, 4096, 4097, 8191, 8192, 8193, 123456, 2345678}
tester := &chunkerTester{t: t}
chunker := NewTreeChunker(NewChunkerParams())
for _, s := range sizes {
testRandomData(chunker, s, tester)
}
pyramid := NewPyramidChunker(NewChunkerParams())
for _, s := range sizes {
testRandomData(pyramid, s, tester)
}
}
func TestRandomBrokenData(t *testing.T) {
sizes := []int{1, 60, 83, 179, 253, 1024, 4095, 4096, 4097, 8191, 8192, 8193, 123456, 2345678}
tester := &chunkerTester{t: t}
chunker := NewTreeChunker(NewChunkerParams())
for _, s := range sizes {
testRandomBrokenData(chunker, s, tester)
t.Logf("done size: %v", s)
}
}
func benchReadAll(reader LazySectionReader) {
size, _ := reader.Size(nil)
output := make([]byte, 1000)
for pos := int64(0); pos < size; pos += 1000 {
reader.ReadAt(output, pos)
}
}
func benchmarkJoin(n int, t *testing.B) {
t.ReportAllocs()
for i := 0; i < t.N; i++ {
chunker := NewTreeChunker(NewChunkerParams())
tester := &chunkerTester{t: t}
data := testDataReader(n)
chunkC := make(chan *Chunk, 1000)
swg := &sync.WaitGroup{}
key := tester.Split(chunker, data, int64(n), chunkC, swg, nil)
// t.StartTimer()
chunkC = make(chan *Chunk, 1000)
quitC := make(chan bool)
reader := tester.Join(chunker, key, i, chunkC, quitC)
benchReadAll(reader)
close(chunkC)
<-quitC
// t.StopTimer()
}
stats := new(runtime.MemStats)
runtime.ReadMemStats(stats)
fmt.Println(stats.Sys)
}
func benchmarkSplitTree(n int, t *testing.B) {
t.ReportAllocs()
for i := 0; i < t.N; i++ {
chunker := NewTreeChunker(NewChunkerParams())
tester := &chunkerTester{t: t}
data := testDataReader(n)
tester.Split(chunker, data, int64(n), nil, nil, nil)
}
stats := new(runtime.MemStats)
runtime.ReadMemStats(stats)
fmt.Println(stats.Sys)
}
func benchmarkSplitPyramid(n int, t *testing.B) {
t.ReportAllocs()
for i := 0; i < t.N; i++ {
splitter := NewPyramidChunker(NewChunkerParams())
tester := &chunkerTester{t: t}
data := testDataReader(n)
tester.Split(splitter, data, int64(n), nil, nil, nil)
}
stats := new(runtime.MemStats)
runtime.ReadMemStats(stats)
fmt.Println(stats.Sys)
}
func BenchmarkJoin_2(t *testing.B) { benchmarkJoin(100, t) }
func BenchmarkJoin_3(t *testing.B) { benchmarkJoin(1000, t) }
func BenchmarkJoin_4(t *testing.B) { benchmarkJoin(10000, t) }
func BenchmarkJoin_5(t *testing.B) { benchmarkJoin(100000, t) }
func BenchmarkJoin_6(t *testing.B) { benchmarkJoin(1000000, t) }
func BenchmarkJoin_7(t *testing.B) { benchmarkJoin(10000000, t) }
func BenchmarkJoin_8(t *testing.B) { benchmarkJoin(100000000, t) }
func BenchmarkSplitTree_2(t *testing.B) { benchmarkSplitTree(100, t) }
func BenchmarkSplitTree_2h(t *testing.B) { benchmarkSplitTree(500, t) }
func BenchmarkSplitTree_3(t *testing.B) { benchmarkSplitTree(1000, t) }
func BenchmarkSplitTree_3h(t *testing.B) { benchmarkSplitTree(5000, t) }
func BenchmarkSplitTree_4(t *testing.B) { benchmarkSplitTree(10000, t) }
func BenchmarkSplitTree_4h(t *testing.B) { benchmarkSplitTree(50000, t) }
func BenchmarkSplitTree_5(t *testing.B) { benchmarkSplitTree(100000, t) }
func BenchmarkSplitTree_6(t *testing.B) { benchmarkSplitTree(1000000, t) }
func BenchmarkSplitTree_7(t *testing.B) { benchmarkSplitTree(10000000, t) }
func BenchmarkSplitTree_8(t *testing.B) { benchmarkSplitTree(100000000, t) }
func BenchmarkSplitPyramid_2(t *testing.B) { benchmarkSplitPyramid(100, t) }
func BenchmarkSplitPyramid_2h(t *testing.B) { benchmarkSplitPyramid(500, t) }
func BenchmarkSplitPyramid_3(t *testing.B) { benchmarkSplitPyramid(1000, t) }
func BenchmarkSplitPyramid_3h(t *testing.B) { benchmarkSplitPyramid(5000, t) }
func BenchmarkSplitPyramid_4(t *testing.B) { benchmarkSplitPyramid(10000, t) }
func BenchmarkSplitPyramid_4h(t *testing.B) { benchmarkSplitPyramid(50000, t) }
func BenchmarkSplitPyramid_5(t *testing.B) { benchmarkSplitPyramid(100000, t) }
func BenchmarkSplitPyramid_6(t *testing.B) { benchmarkSplitPyramid(1000000, t) }
func BenchmarkSplitPyramid_7(t *testing.B) { benchmarkSplitPyramid(10000000, t) }
func BenchmarkSplitPyramid_8(t *testing.B) { benchmarkSplitPyramid(100000000, t) }
// godep go test -bench ./swarm/storage -cpuprofile cpu.out -memprofile mem.out
