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// 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 (
"crypto/rand"
"encoding/binary"
"io/ioutil"
"os"
"sync"
"testing"
"github.com/ethereum/go-ethereum/swarm/log"
)
func newTestMemStore() *MemStore {
storeparams := NewDefaultStoreParams()
return NewMemStore(storeparams, nil)
}
func testMemStoreRandom(n int, processors int, chunksize int64, t *testing.T) {
m := newTestMemStore()
defer m.Close()
testStoreRandom(m, processors, n, chunksize, t)
}
func testMemStoreCorrect(n int, processors int, chunksize int64, t *testing.T) {
m := newTestMemStore()
defer m.Close()
testStoreCorrect(m, processors, n, chunksize, t)
}
func TestMemStoreRandom_1(t *testing.T) {
testMemStoreRandom(1, 1, 0, t)
}
func TestMemStoreCorrect_1(t *testing.T) {
testMemStoreCorrect(1, 1, 4104, t)
}
func TestMemStoreRandom_1_1k(t *testing.T) {
testMemStoreRandom(1, 1000, 0, t)
}
func TestMemStoreCorrect_1_1k(t *testing.T) {
testMemStoreCorrect(1, 100, 4096, t)
}
func TestMemStoreRandom_8_1k(t *testing.T) {
testMemStoreRandom(8, 1000, 0, t)
}
func TestMemStoreCorrect_8_1k(t *testing.T) {
testMemStoreCorrect(8, 1000, 4096, t)
}
func TestMemStoreNotFound(t *testing.T) {
m := newTestMemStore()
defer m.Close()
_, err := m.Get(ZeroAddr)
if err != ErrChunkNotFound {
t.Errorf("Expected ErrChunkNotFound, got %v", err)
}
}
func benchmarkMemStorePut(n int, processors int, chunksize int64, b *testing.B) {
m := newTestMemStore()
defer m.Close()
benchmarkStorePut(m, processors, n, chunksize, b)
}
func benchmarkMemStoreGet(n int, processors int, chunksize int64, b *testing.B) {
m := newTestMemStore()
defer m.Close()
benchmarkStoreGet(m, processors, n, chunksize, b)
}
func BenchmarkMemStorePut_1_500(b *testing.B) {
benchmarkMemStorePut(500, 1, 4096, b)
}
func BenchmarkMemStorePut_8_500(b *testing.B) {
benchmarkMemStorePut(500, 8, 4096, b)
}
func BenchmarkMemStoreGet_1_500(b *testing.B) {
benchmarkMemStoreGet(500, 1, 4096, b)
}
func BenchmarkMemStoreGet_8_500(b *testing.B) {
benchmarkMemStoreGet(500, 8, 4096, b)
}
func newLDBStore(t *testing.T) (*LDBStore, func()) {
dir, err := ioutil.TempDir("", "bzz-storage-test")
if err != nil {
t.Fatal(err)
}
log.Trace("memstore.tempdir", "dir", dir)
ldbparams := NewLDBStoreParams(NewDefaultStoreParams(), dir)
db, err := NewLDBStore(ldbparams)
if err != nil {
t.Fatal(err)
}
cleanup := func() {
db.Close()
err := os.RemoveAll(dir)
if err != nil {
t.Fatal(err)
}
}
return db, cleanup
}
func TestMemStoreAndLDBStore(t *testing.T) {
ldb, cleanup := newLDBStore(t)
ldb.setCapacity(4000)
defer cleanup()
cacheCap := 200
requestsCap := 200
memStore := NewMemStore(NewStoreParams(4000, 200, 200, nil, nil), nil)
tests := []struct {
n int // number of chunks to push to memStore
chunkSize uint64 // size of chunk (by default in Swarm - 4096)
request bool // whether or not to set the ReqC channel on the random chunks
}{
{
n: 1,
chunkSize: 4096,
request: false,
},
{
n: 201,
chunkSize: 4096,
request: false,
},
{
n: 501,
chunkSize: 4096,
request: false,
},
{
n: 3100,
chunkSize: 4096,
request: false,
},
{
n: 100,
chunkSize: 4096,
request: true,
},
}
for i, tt := range tests {
log.Info("running test", "idx", i, "tt", tt)
var chunks []*Chunk
for i := 0; i < tt.n; i++ {
var c *Chunk
if tt.request {
c = NewRandomRequestChunk(tt.chunkSize)
} else {
c = NewRandomChunk(tt.chunkSize)
}
chunks = append(chunks, c)
}
for i := 0; i < tt.n; i++ {
go ldb.Put(chunks[i])
memStore.Put(chunks[i])
if got := memStore.cache.Len(); got > cacheCap {
t.Fatalf("expected to get cache capacity less than %v, but got %v", cacheCap, got)
}
if got := memStore.requests.Len(); got > requestsCap {
t.Fatalf("expected to get requests capacity less than %v, but got %v", requestsCap, got)
}
}
for i := 0; i < tt.n; i++ {
_, err := memStore.Get(chunks[i].Addr)
if err != nil {
if err == ErrChunkNotFound {
_, err := ldb.Get(chunks[i].Addr)
if err != nil {
t.Fatalf("couldn't get chunk %v from ldb, got error: %v", i, err)
}
} else {
t.Fatalf("got error from memstore: %v", err)
}
}
}
// wait for all chunks to be stored before ending the test are cleaning up
for i := 0; i < tt.n; i++ {
<-chunks[i].dbStoredC
}
}
}
func NewRandomChunk(chunkSize uint64) *Chunk {
c := &Chunk{
Addr: make([]byte, 32),
ReqC: nil,
SData: make([]byte, chunkSize+8), // SData should be chunkSize + 8 bytes reserved for length
dbStoredC: make(chan bool),
dbStoredMu: &sync.Mutex{},
}
rand.Read(c.SData)
binary.LittleEndian.PutUint64(c.SData[:8], chunkSize)
hasher := MakeHashFunc(SHA3Hash)()
hasher.Write(c.SData)
copy(c.Addr, hasher.Sum(nil))
return c
}
func NewRandomRequestChunk(chunkSize uint64) *Chunk {
c := NewRandomChunk(chunkSize)
c.ReqC = make(chan bool)
return c
}
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