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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 stream
import (
"context"
crand "crypto/rand"
"fmt"
"io"
"io/ioutil"
"math"
"os"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discover"
"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
"github.com/ethereum/go-ethereum/swarm/log"
"github.com/ethereum/go-ethereum/swarm/network"
"github.com/ethereum/go-ethereum/swarm/network/simulation"
"github.com/ethereum/go-ethereum/swarm/state"
"github.com/ethereum/go-ethereum/swarm/storage"
mockdb "github.com/ethereum/go-ethereum/swarm/storage/mock/db"
)
const dataChunkCount = 200
func TestSyncerSimulation(t *testing.T) {
testSyncBetweenNodes(t, 2, 1, dataChunkCount, true, 1)
testSyncBetweenNodes(t, 4, 1, dataChunkCount, true, 1)
testSyncBetweenNodes(t, 8, 1, dataChunkCount, true, 1)
testSyncBetweenNodes(t, 16, 1, dataChunkCount, true, 1)
}
func createMockStore(globalStore *mockdb.GlobalStore, id discover.NodeID, addr *network.BzzAddr) (lstore storage.ChunkStore, datadir string, err error) {
address := common.BytesToAddress(id.Bytes())
mockStore := globalStore.NewNodeStore(address)
params := storage.NewDefaultLocalStoreParams()
datadir, err = ioutil.TempDir("", "localMockStore-"+id.TerminalString())
if err != nil {
return nil, "", err
}
params.Init(datadir)
params.BaseKey = addr.Over()
lstore, err = storage.NewLocalStore(params, mockStore)
return lstore, datadir, nil
}
func testSyncBetweenNodes(t *testing.T, nodes, conns, chunkCount int, skipCheck bool, po uint8) {
sim := simulation.New(map[string]simulation.ServiceFunc{
"streamer": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) {
var store storage.ChunkStore
var globalStore *mockdb.GlobalStore
var gDir, datadir string
id := ctx.Config.ID
addr := network.NewAddrFromNodeID(id)
//hack to put addresses in same space
addr.OAddr[0] = byte(0)
if *useMockStore {
gDir, globalStore, err = createGlobalStore()
if err != nil {
return nil, nil, fmt.Errorf("Something went wrong; using mockStore enabled but globalStore is nil")
}
store, datadir, err = createMockStore(globalStore, id, addr)
} else {
store, datadir, err = createTestLocalStorageForID(id, addr)
}
if err != nil {
return nil, nil, err
}
bucket.Store(bucketKeyStore, store)
cleanup = func() {
store.Close()
os.RemoveAll(datadir)
if *useMockStore {
err := globalStore.Close()
if err != nil {
log.Error("Error closing global store! %v", "err", err)
}
os.RemoveAll(gDir)
}
}
localStore := store.(*storage.LocalStore)
db := storage.NewDBAPI(localStore)
bucket.Store(bucketKeyDB, db)
kad := network.NewKademlia(addr.Over(), network.NewKadParams())
delivery := NewDelivery(kad, db)
bucket.Store(bucketKeyDelivery, delivery)
r := NewRegistry(addr, delivery, db, state.NewInmemoryStore(), &RegistryOptions{
SkipCheck: skipCheck,
})
fileStore := storage.NewFileStore(storage.NewNetStore(localStore, nil), storage.NewFileStoreParams())
bucket.Store(bucketKeyFileStore, fileStore)
return r, cleanup, nil
},
})
defer sim.Close()
// create context for simulation run
timeout := 30 * time.Second
ctx, cancel := context.WithTimeout(context.Background(), timeout)
// defer cancel should come before defer simulation teardown
defer cancel()
_, err := sim.AddNodesAndConnectChain(nodes)
if err != nil {
t.Fatal(err)
}
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
nodeIDs := sim.UpNodeIDs()
nodeIndex := make(map[discover.NodeID]int)
for i, id := range nodeIDs {
nodeIndex[id] = i
}
disconnections := sim.PeerEvents(
context.Background(),
sim.NodeIDs(),
simulation.NewPeerEventsFilter().Type(p2p.PeerEventTypeDrop),
)
go func() {
for d := range disconnections {
if d.Error != nil {
log.Error("peer drop", "node", d.NodeID, "peer", d.Event.Peer)
t.Fatal(d.Error)
}
}
}()
// each node Subscribes to each other's swarmChunkServerStreamName
for j := 0; j < nodes-1; j++ {
id := nodeIDs[j]
client, err := sim.Net.GetNode(id).Client()
if err != nil {
t.Fatal(err)
}
sid := nodeIDs[j+1]
client.CallContext(ctx, nil, "stream_subscribeStream", sid, NewStream("SYNC", FormatSyncBinKey(1), false), NewRange(0, 0), Top)
if err != nil {
return err
}
if j > 0 || nodes == 2 {
item, ok := sim.NodeItem(nodeIDs[j], bucketKeyFileStore)
if !ok {
return fmt.Errorf("No filestore")
}
fileStore := item.(*storage.FileStore)
size := chunkCount * chunkSize
_, wait, err := fileStore.Store(ctx, io.LimitReader(crand.Reader, int64(size)), int64(size), false)
if err != nil {
t.Fatal(err.Error())
}
wait(ctx)
}
}
// here we distribute chunks of a random file into stores 1...nodes
if _, err := sim.WaitTillHealthy(ctx, 2); err != nil {
return err
}
// collect hashes in po 1 bin for each node
hashes := make([][]storage.Address, nodes)
totalHashes := 0
hashCounts := make([]int, nodes)
for i := nodes - 1; i >= 0; i-- {
if i < nodes-1 {
hashCounts[i] = hashCounts[i+1]
}
item, ok := sim.NodeItem(nodeIDs[i], bucketKeyDB)
if !ok {
return fmt.Errorf("No DB")
}
db := item.(*storage.DBAPI)
db.Iterator(0, math.MaxUint64, po, func(addr storage.Address, index uint64) bool {
hashes[i] = append(hashes[i], addr)
totalHashes++
hashCounts[i]++
return true
})
}
var total, found int
for _, node := range nodeIDs {
i := nodeIndex[node]
for j := i; j < nodes; j++ {
total += len(hashes[j])
for _, key := range hashes[j] {
item, ok := sim.NodeItem(nodeIDs[j], bucketKeyDB)
if !ok {
return fmt.Errorf("No DB")
}
db := item.(*storage.DBAPI)
chunk, err := db.Get(ctx, key)
if err == storage.ErrFetching {
<-chunk.ReqC
} else if err != nil {
continue
}
// needed for leveldb not to be closed?
// chunk.WaitToStore()
found++
}
}
log.Debug("sync check", "node", node, "index", i, "bin", po, "found", found, "total", total)
}
if total == found && total > 0 {
return nil
}
return fmt.Errorf("Total not equallying found: total is %d", total)
})
if result.Error != nil {
t.Fatal(result.Error)
}
}
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