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localstore_test.go
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localstore_test.go
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// Copyright 2018 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 localstore
import (
"bytes"
"context"
"errors"
"fmt"
"math/rand"
"runtime"
"sort"
"sync"
"testing"
"time"
"github.com/ethersphere/bee/pkg/log"
"github.com/ethersphere/bee/pkg/postage"
"github.com/ethersphere/bee/pkg/sharky"
"github.com/ethersphere/bee/pkg/shed"
"github.com/ethersphere/bee/pkg/storage"
chunktesting "github.com/ethersphere/bee/pkg/storage/testing"
"github.com/ethersphere/bee/pkg/swarm"
"github.com/syndtr/goleveldb/leveldb"
)
// nolint:gochecknoinits
func init() {
// Some of the tests in localstore package rely on the same ordering of
// items uploaded or accessed compared to the ordering of items in indexes
// that contain StoreTimestamp or AccessTimestamp in keys. In tests
// where the same order is required from the database as the order
// in which chunks are put or accessed, if the StoreTimestamp or
// AccessTimestamp are the same for two or more sequential items
// their order in database will be based on the chunk address value,
// in which case the ordering of items/chunks stored in a test slice
// will not be the same. To ensure the same ordering in database on such
// indexes on windows systems, an additional short sleep is added to
// the now function.
if runtime.GOOS == "windows" {
setNow(func() int64 {
time.Sleep(time.Microsecond)
return time.Now().UTC().UnixNano()
})
}
}
func TestCacheCapacity(t *testing.T) {
lo := Options{
Capacity: 500,
}
db := newTestDB(t, &lo)
if db.cacheCapacity != 500 {
t.Fatal("could not set cache capacity")
}
}
// TestDB validates if the chunk can be uploaded and
// correctly retrieved.
func TestDB(t *testing.T) {
db := newTestDB(t, nil)
ch := generateTestRandomChunk()
_, err := db.Put(context.Background(), storage.ModePutUpload, ch)
if err != nil {
t.Fatal(err)
}
got, err := db.Get(context.Background(), storage.ModeGetRequest, ch.Address())
if err != nil {
t.Fatal(err)
}
if !got.Address().Equal(ch.Address()) {
t.Errorf("got address %x, want %x", got.Address(), ch.Address())
}
if !bytes.Equal(got.Data(), ch.Data()) {
t.Errorf("got data %x, want %x", got.Data(), ch.Data())
}
}
// TestDB_updateGCSem tests maxParallelUpdateGC limit.
// This test temporary sets the limit to a low number,
// makes updateGC function execution time longer by
// setting a custom testHookUpdateGC function with a sleep
// and a count current and maximal number of goroutines.
func TestDB_updateGCSem(t *testing.T) {
updateGCSleep := time.Second
var count int
var max int
var mu sync.Mutex
t.Cleanup(setTestHookUpdateGC(func() {
mu.Lock()
// add to the count of current goroutines
count++
if count > max {
// set maximal detected numbers of goroutines
max = count
}
mu.Unlock()
// wait for some time to ensure multiple parallel goroutines
time.Sleep(updateGCSleep)
mu.Lock()
count--
mu.Unlock()
}))
defer func(m int) { maxParallelUpdateGC = m }(maxParallelUpdateGC)
maxParallelUpdateGC = 3
db := newTestDB(t, nil)
ch := generateTestRandomChunk()
_, err := db.Put(context.Background(), storage.ModePutUpload, ch)
if err != nil {
t.Fatal(err)
}
// get more chunks then maxParallelUpdateGC
// in time shorter then updateGCSleep
for i := 0; i < 5; i++ {
_, err = db.Get(context.Background(), storage.ModeGetRequest, ch.Address())
if err != nil {
t.Fatal(err)
}
}
if max != maxParallelUpdateGC {
t.Errorf("got max %v, want %v", max, maxParallelUpdateGC)
}
}
// TestParallelPutAndGet validates that the integrity of the chunks in
// concurrent operations is preserved.
func TestParallelPutAndGet(t *testing.T) {
db := newTestDB(t, nil)
ctx := context.Background()
chunkCount := 1000
writeWorkerCount := 10
chunks := make([]swarm.Chunk, 0, chunkCount)
var chunksMu sync.Mutex
var writeWG sync.WaitGroup
for worker := 0; worker < writeWorkerCount; worker++ {
writeWG.Add(1)
go func() {
defer writeWG.Done()
for i := 0; i < chunkCount/writeWorkerCount; i++ {
ch := generateTestRandomChunk()
_, err := db.Put(ctx, storage.ModePutUpload, ch)
if err != nil {
t.Error(err)
}
chunksMu.Lock()
chunks = append(chunks, ch)
chunksMu.Unlock()
}
}()
}
writeWG.Wait()
var readWG sync.WaitGroup
readWorkerCount := 10
for worker := 0; worker < readWorkerCount; worker++ {
readWG.Add(1)
go func() {
defer readWG.Done()
random := rand.New(rand.NewSource(time.Now().UnixNano()))
for i := 0; i < chunkCount; i++ {
n := random.Int63n(int64(chunkCount))
ch := chunks[n]
chData := ch.Data()
got, err := db.Get(ctx, storage.ModeGetRequest, ch.Address())
if err != nil {
t.Error(err)
}
gotData := got.Data()
if !bytes.Equal(gotData, chData) {
if !ch.Address().Equal(got.Address()) {
t.Errorf("got address %s, want %s", got.Address(), ch.Address())
}
t.Errorf("chunk %s: got data %x, want %x", ch.Address(), gotData, chData)
}
}
}()
}
readWG.Wait()
}
// newTestDB is a helper function that constructs a
// temporary database and returns a cleanup function that must
// be called to remove the data.
func newTestDB(tb testing.TB, o *Options) *DB {
tb.Helper()
baseKey := make([]byte, 32)
if _, err := rand.Read(baseKey); err != nil {
tb.Fatal(err)
}
if o == nil {
o = &Options{}
}
if o.UnreserveFunc == nil {
o.UnreserveFunc = func(postage.UnreserveIteratorFn) error {
return nil
}
}
if o.ValidStamp == nil {
o.ValidStamp = func(_ swarm.Chunk, stampBytes []byte) (chunk swarm.Chunk, err error) {
return nil, nil
}
}
logger := log.Noop
db, err := New("", baseKey, nil, o, logger)
if err != nil {
tb.Fatal(err)
}
tb.Cleanup(func() {
err := db.Close()
if err != nil {
tb.Error(err)
}
})
return db
}
var (
generateTestRandomChunk = chunktesting.GenerateTestRandomChunk
generateTestRandomChunks = chunktesting.GenerateTestRandomChunks
generateTestRandomChunkAt = chunktesting.GenerateTestRandomChunkAt
generateValidRandomChunkAt = chunktesting.GenerateValidRandomChunkAt
)
// chunkAddresses return chunk addresses of provided chunks.
func chunkAddresses(chunks []swarm.Chunk) []swarm.Address {
addrs := make([]swarm.Address, len(chunks))
for i, ch := range chunks {
addrs[i] = ch.Address()
}
return addrs
}
// Standard test cases to validate multi chunk operations.
var multiChunkTestCases = []struct {
name string
count int
}{
{
name: "one",
count: 1,
},
{
name: "two",
count: 2,
},
{
name: "eight",
count: 8,
},
{
name: "hundred",
count: 100,
},
{
name: "thousand",
count: 1000,
},
}
// TestGenerateTestRandomChunk validates that
// generateTestRandomChunk returns random data by comparing
// two generated chunks.
func TestGenerateTestRandomChunk(t *testing.T) {
c1 := generateTestRandomChunk()
c2 := generateTestRandomChunk()
addrLen := len(c1.Address().Bytes())
if addrLen != 32 {
t.Errorf("first chunk address length %v, want %v", addrLen, 32)
}
dataLen := len(c1.Data())
if dataLen != swarm.ChunkSize+swarm.SpanSize {
t.Errorf("first chunk data length %v, want %v", dataLen, swarm.ChunkSize)
}
addrLen = len(c2.Address().Bytes())
if addrLen != 32 {
t.Errorf("second chunk address length %v, want %v", addrLen, 32)
}
dataLen = len(c2.Data())
if dataLen != swarm.ChunkSize+swarm.SpanSize {
t.Errorf("second chunk data length %v, want %v", dataLen, swarm.ChunkSize)
}
if c1.Address().Equal(c2.Address()) {
t.Error("fake chunks addresses do not differ")
}
if bytes.Equal(c1.Data(), c2.Data()) {
t.Error("fake chunks data bytes do not differ")
}
}
// newRetrieveIndexesTest returns a test function that validates if the right
// chunk values are in the retrieval indexes
func newRetrieveIndexesTest(db *DB, chunk swarm.Chunk, storeTimestamp, accessTimestamp int64) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
item, err := db.retrievalDataIndex.Get(addressToItem(chunk.Address()))
if err != nil {
t.Fatal(err)
}
validateItem(t, item, chunk.Address().Bytes(), storeTimestamp, 0, chunk.Stamp())
validateData(t, db, item, chunk.Data())
// access index should not be set
wantErr := leveldb.ErrNotFound
_, err = db.retrievalAccessIndex.Get(addressToItem(chunk.Address()))
if !errors.Is(err, wantErr) {
t.Errorf("got error %v, want %v", err, wantErr)
}
}
}
// newRetrieveIndexesTestWithAccess returns a test function that validates if the right
// chunk values are in the retrieval indexes when access time must be stored.
func newRetrieveIndexesTestWithAccess(db *DB, ch swarm.Chunk, storeTimestamp, accessTimestamp int64) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
item, err := db.retrievalDataIndex.Get(addressToItem(ch.Address()))
if err != nil {
t.Fatal(err)
}
if accessTimestamp > 0 {
item, err = db.retrievalAccessIndex.Get(item)
if err != nil {
t.Fatal(err)
}
}
validateItem(t, item, ch.Address().Bytes(), storeTimestamp, accessTimestamp, ch.Stamp())
validateData(t, db, item, ch.Data())
}
}
// newPullIndexTest returns a test function that validates if the right
// chunk values are in the pull index.
func newPullIndexTest(db *DB, ch swarm.Chunk, binID uint64, wantError error) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
item, err := db.pullIndex.Get(shed.Item{
Address: ch.Address().Bytes(),
BinID: binID,
})
if !errors.Is(err, wantError) {
t.Errorf("got error %v, want %v", err, wantError)
}
if err == nil {
validateItem(t, item, ch.Address().Bytes(), 0, 0, postage.NewStamp(ch.Stamp().BatchID(), nil, nil, nil))
}
}
}
// newPushIndexTest returns a test function that validates if the right
// chunk values are in the push index.
func newPushIndexTest(db *DB, ch swarm.Chunk, storeTimestamp int64, wantError error) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
item, err := db.pushIndex.Get(shed.Item{
Address: ch.Address().Bytes(),
StoreTimestamp: storeTimestamp,
})
if !errors.Is(err, wantError) {
t.Errorf("got error %v, want %v", err, wantError)
}
if err == nil {
validateItem(t, item, ch.Address().Bytes(), storeTimestamp, 0, postage.NewStamp(nil, nil, nil, nil))
}
}
}
// newGCIndexTest returns a test function that validates if the right
// chunk values are in the GC index.
func newGCIndexTest(db *DB, chunk swarm.Chunk, storeTimestamp, accessTimestamp int64, binID uint64, wantError error, stamp *postage.Stamp) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
item, err := db.gcIndex.Get(shed.Item{
Address: chunk.Address().Bytes(),
BinID: binID,
AccessTimestamp: accessTimestamp,
})
if !errors.Is(err, wantError) {
t.Errorf("got error %v, want %v", err, wantError)
}
if err == nil {
validateItem(t, item, chunk.Address().Bytes(), 0, accessTimestamp, stamp)
}
}
}
// newPinIndexTest returns a test function that validates if the right
// chunk values are in the pin index.
func newPinIndexTest(db *DB, chunk swarm.Chunk, wantError error) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
item, err := db.pinIndex.Get(shed.Item{
Address: chunk.Address().Bytes(),
})
if !errors.Is(err, wantError) {
t.Errorf("got error %v, want %v", err, wantError)
}
if err == nil {
validateItem(t, item, chunk.Address().Bytes(), 0, 0, postage.NewStamp(nil, nil, nil, nil))
}
}
}
// newItemsCountTest returns a test function that validates if
// an index contains expected number of key/value pairs.
func newItemsCountTest(i shed.Index, want int) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
var c int
err := i.Iterate(func(item shed.Item) (stop bool, err error) {
c++
return
}, nil)
if err != nil {
t.Fatal(err)
}
if c != want {
t.Errorf("got %v items in index, want %v", c, want)
}
}
}
// newIndexGCSizeTest returns a test function that validates if DB.gcSize
// value is the same as the number of items in DB.gcIndex.
func newIndexGCSizeTest(db *DB) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
var want uint64
err := db.gcIndex.Iterate(func(item shed.Item) (stop bool, err error) {
want++
return
}, nil)
if err != nil {
t.Fatal(err)
}
got, err := db.gcSize.Get()
if err != nil {
t.Fatal(err)
}
if got != want {
t.Errorf("got gc size %v, want %v", got, want)
}
}
}
// reserveSizeTest checks that the reserveSize scalar is equal
// to the expected value.
func reserveSizeTest(db *DB, want uint64, depth uint8) func(t *testing.T) {
return func(t *testing.T) {
t.Helper()
got, err := db.ComputeReserveSize(depth)
if err != nil {
t.Fatal(err)
}
if got != want {
t.Errorf("got reserve size %v, want %v", got, want)
}
}
}
// testIndexChunk embeds storageChunk with additional data that is stored
// in database. It is used for index values validations.
type testIndexChunk struct {
swarm.Chunk
binID uint64
}
// testItemsOrder tests the order of chunks in the index. If sortFunc is not nil,
// chunks will be sorted with it before validation.
func testItemsOrder(t *testing.T, i shed.Index, chunks []testIndexChunk, sortFunc func(i, j int) (less bool)) {
t.Helper()
newItemsCountTest(i, len(chunks))(t)
if sortFunc != nil {
sort.Slice(chunks, sortFunc)
}
var cursor int
err := i.Iterate(func(item shed.Item) (stop bool, err error) {
want := chunks[cursor].Address()
got := item.Address
if !bytes.Equal(got, want.Bytes()) {
return true, fmt.Errorf("got address %x at position %v, want %x", got, cursor, want)
}
cursor++
return false, nil
}, nil)
if err != nil {
t.Fatal(err)
}
}
// validateItem is a helper function that checks Item values.
func validateItem(t *testing.T, item shed.Item, address []byte, storeTimestamp, accessTimestamp int64, stamp swarm.Stamp) {
t.Helper()
if !bytes.Equal(item.Address, address) {
t.Errorf("got item address %x, want %x", item.Address, address)
}
if item.StoreTimestamp != storeTimestamp {
t.Errorf("got item store timestamp %v, want %v", item.StoreTimestamp, storeTimestamp)
}
if item.AccessTimestamp != accessTimestamp {
t.Errorf("got item access timestamp %v, want %v", item.AccessTimestamp, accessTimestamp)
}
if !bytes.Equal(item.BatchID, stamp.BatchID()) {
t.Errorf("got batch ID %x, want %x", item.BatchID, stamp.BatchID())
}
if !bytes.Equal(item.Sig, stamp.Sig()) {
t.Errorf("got signature %x, want %x", item.Sig, stamp.Sig())
}
}
func validateData(t *testing.T, db *DB, item shed.Item, data []byte) {
t.Helper()
loc, err := sharky.LocationFromBinary(item.Location)
if err != nil {
t.Fatal("failed reading sharky location", err)
}
buf := make([]byte, loc.Length)
err = db.sharky.Read(context.TODO(), loc, buf)
if err != nil {
t.Fatal("failed reading data from sharky", err)
}
if !bytes.Equal(buf, data) {
t.Errorf("got item data %x, want %x", buf, data)
}
}
// setNow replaces now function and
// returns a function that will reset it to the
// value before the change.
func setNow(f func() int64) (reset func()) {
current := now
reset = func() { now = current }
now = f
return reset
}
// TestSetNow tests if setNow function changes now function
// correctly and if its reset function resets the original function.
func TestSetNow(t *testing.T) {
// set the current function after the test finishes
defer func(f func() int64) { now = f }(now)
// expected value for the unchanged function
var original int64 = 1
// expected value for the changed function
var changed int64 = 2
// define the original (unchanged) functions
now = func() int64 {
return original
}
// get the time
got := now()
// test if got variable is set correctly
if got != original {
t.Errorf("got now value %v, want %v", got, original)
}
// set the new function
reset := setNow(func() int64 {
return changed
})
// get the time
got = now()
// test if got variable is set correctly to changed value
if got != changed {
t.Errorf("got hook value %v, want %v", got, changed)
}
// set the function to the original one
reset()
// get the time
got = now()
// test if got variable is set correctly to original value
if got != original {
t.Errorf("got hook value %v, want %v", got, original)
}
}
func testIndexCounts(t *testing.T, pushIndex, pullIndex, gcIndex, pinIndex, retrievalDataIndex, retrievalAccessIndex int, indexInfo map[string]int) {
t.Helper()
if indexInfo["pushIndex"] != pushIndex {
t.Fatalf("pushIndex count mismatch. got %d want %d", indexInfo["pushIndex"], pushIndex)
}
if indexInfo["pullIndex"] != pullIndex {
t.Fatalf("pullIndex count mismatch. got %d want %d", indexInfo["pullIndex"], pullIndex)
}
if indexInfo["gcIndex"] != gcIndex {
t.Fatalf("gcIndex count mismatch. got %d want %d", indexInfo["gcIndex"], gcIndex)
}
if indexInfo["pinIndex"] != pinIndex {
t.Fatalf("pinIndex count mismatch. got %d want %d", indexInfo["pinIndex"], pinIndex)
}
if indexInfo["retrievalDataIndex"] != retrievalDataIndex {
t.Fatalf("retrievalDataIndex count mismatch. got %d want %d", indexInfo["retrievalDataIndex"], retrievalDataIndex)
}
if indexInfo["retrievalAccessIndex"] != retrievalAccessIndex {
t.Fatalf("retrievalAccessIndex count mismatch. got %d want %d", indexInfo["retrievalAccessIndex"], retrievalAccessIndex)
}
}
// TestDBDebugIndexes tests that the index counts are correct for the
// index debug function
func TestDBDebugIndexes(t *testing.T) {
db := newTestDB(t, nil)
ctx := context.Background()
uploadTimestamp := time.Now().UTC().UnixNano()
defer setNow(func() (t int64) {
return uploadTimestamp
})()
ch := generateTestRandomChunk()
_, err := db.Put(ctx, storage.ModePutUpload, ch)
if err != nil {
t.Fatal(err)
}
indexCounts, err := db.DebugIndices()
if err != nil {
t.Fatal(err)
}
testIndexCounts(t, 1, 0, 0, 0, 1, 0, indexCounts)
// set the chunk for pinning and expect the index count to grow
err = db.Set(ctx, storage.ModeSetPin, ch.Address())
if err != nil {
t.Fatal(err)
}
indexCounts, err = db.DebugIndices()
if err != nil {
t.Fatal(err)
}
// assert that there's a pin and gc exclude entry now
testIndexCounts(t, 1, 0, 0, 1, 1, 0, indexCounts)
_, err = db.Put(ctx, storage.ModePutSync, ch)
if err != nil {
t.Fatal(err)
}
indexCounts, err = db.DebugIndices()
if err != nil {
t.Fatal(err)
}
testIndexCounts(t, 1, 1, 0, 1, 1, 0, indexCounts)
}