256 lines
7.4 KiB
Go
256 lines
7.4 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package stream
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import (
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"context"
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crand "crypto/rand"
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"errors"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"math/rand"
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"os"
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"strings"
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"sync/atomic"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/p2p/discover"
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p2ptest "github.com/ethereum/go-ethereum/p2p/testing"
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"github.com/ethereum/go-ethereum/swarm/network"
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"github.com/ethereum/go-ethereum/swarm/network/simulation"
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"github.com/ethereum/go-ethereum/swarm/pot"
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"github.com/ethereum/go-ethereum/swarm/state"
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"github.com/ethereum/go-ethereum/swarm/storage"
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mockdb "github.com/ethereum/go-ethereum/swarm/storage/mock/db"
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colorable "github.com/mattn/go-colorable"
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)
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var (
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loglevel = flag.Int("loglevel", 2, "verbosity of logs")
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nodes = flag.Int("nodes", 0, "number of nodes")
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chunks = flag.Int("chunks", 0, "number of chunks")
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useMockStore = flag.Bool("mockstore", false, "disabled mock store (default: enabled)")
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longrunning = flag.Bool("longrunning", false, "do run long-running tests")
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bucketKeyDB = simulation.BucketKey("db")
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bucketKeyStore = simulation.BucketKey("store")
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bucketKeyFileStore = simulation.BucketKey("filestore")
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bucketKeyNetStore = simulation.BucketKey("netstore")
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bucketKeyDelivery = simulation.BucketKey("delivery")
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bucketKeyRegistry = simulation.BucketKey("registry")
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chunkSize = 4096
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pof = pot.DefaultPof(256)
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)
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func init() {
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flag.Parse()
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rand.Seed(time.Now().UnixNano())
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log.PrintOrigins(true)
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log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*loglevel), log.StreamHandler(colorable.NewColorableStderr(), log.TerminalFormat(true))))
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}
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func createGlobalStore() (string, *mockdb.GlobalStore, error) {
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var globalStore *mockdb.GlobalStore
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globalStoreDir, err := ioutil.TempDir("", "global.store")
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if err != nil {
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log.Error("Error initiating global store temp directory!", "err", err)
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return "", nil, err
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}
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globalStore, err = mockdb.NewGlobalStore(globalStoreDir)
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if err != nil {
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log.Error("Error initiating global store!", "err", err)
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return "", nil, err
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}
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return globalStoreDir, globalStore, nil
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}
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func newStreamerTester(t *testing.T) (*p2ptest.ProtocolTester, *Registry, *storage.LocalStore, func(), error) {
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// setup
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addr := network.RandomAddr() // tested peers peer address
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to := network.NewKademlia(addr.OAddr, network.NewKadParams())
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// temp datadir
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datadir, err := ioutil.TempDir("", "streamer")
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if err != nil {
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return nil, nil, nil, func() {}, err
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}
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removeDataDir := func() {
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os.RemoveAll(datadir)
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}
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params := storage.NewDefaultLocalStoreParams()
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params.Init(datadir)
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params.BaseKey = addr.Over()
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localStore, err := storage.NewTestLocalStoreForAddr(params)
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if err != nil {
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return nil, nil, nil, removeDataDir, err
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}
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db := storage.NewDBAPI(localStore)
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delivery := NewDelivery(to, db)
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streamer := NewRegistry(addr, delivery, db, state.NewInmemoryStore(), nil)
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teardown := func() {
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streamer.Close()
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removeDataDir()
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}
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protocolTester := p2ptest.NewProtocolTester(t, network.NewNodeIDFromAddr(addr), 1, streamer.runProtocol)
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err = waitForPeers(streamer, 1*time.Second, 1)
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if err != nil {
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return nil, nil, nil, nil, errors.New("timeout: peer is not created")
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}
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return protocolTester, streamer, localStore, teardown, nil
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}
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func waitForPeers(streamer *Registry, timeout time.Duration, expectedPeers int) error {
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ticker := time.NewTicker(10 * time.Millisecond)
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timeoutTimer := time.NewTimer(timeout)
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for {
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select {
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case <-ticker.C:
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if streamer.peersCount() >= expectedPeers {
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return nil
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}
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case <-timeoutTimer.C:
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return errors.New("timeout")
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}
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}
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}
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type roundRobinStore struct {
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index uint32
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stores []storage.ChunkStore
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}
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func newRoundRobinStore(stores ...storage.ChunkStore) *roundRobinStore {
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return &roundRobinStore{
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stores: stores,
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}
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}
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func (rrs *roundRobinStore) Get(ctx context.Context, addr storage.Address) (*storage.Chunk, error) {
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return nil, errors.New("get not well defined on round robin store")
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}
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func (rrs *roundRobinStore) Put(ctx context.Context, chunk *storage.Chunk) {
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i := atomic.AddUint32(&rrs.index, 1)
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idx := int(i) % len(rrs.stores)
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rrs.stores[idx].Put(ctx, chunk)
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}
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func (rrs *roundRobinStore) Close() {
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for _, store := range rrs.stores {
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store.Close()
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}
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}
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func readAll(fileStore *storage.FileStore, hash []byte) (int64, error) {
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r, _ := fileStore.Retrieve(context.TODO(), hash)
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buf := make([]byte, 1024)
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var n int
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var total int64
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var err error
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for (total == 0 || n > 0) && err == nil {
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n, err = r.ReadAt(buf, total)
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total += int64(n)
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}
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if err != nil && err != io.EOF {
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return total, err
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}
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return total, nil
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}
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func uploadFilesToNodes(sim *simulation.Simulation) ([]storage.Address, []string, error) {
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nodes := sim.UpNodeIDs()
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nodeCnt := len(nodes)
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log.Debug(fmt.Sprintf("Uploading %d files to nodes", nodeCnt))
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//array holding generated files
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rfiles := make([]string, nodeCnt)
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//array holding the root hashes of the files
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rootAddrs := make([]storage.Address, nodeCnt)
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var err error
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//for every node, generate a file and upload
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for i, id := range nodes {
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item, ok := sim.NodeItem(id, bucketKeyFileStore)
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if !ok {
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return nil, nil, fmt.Errorf("Error accessing localstore")
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}
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fileStore := item.(*storage.FileStore)
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//generate a file
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rfiles[i], err = generateRandomFile()
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if err != nil {
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return nil, nil, err
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}
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//store it (upload it) on the FileStore
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ctx := context.TODO()
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rk, wait, err := fileStore.Store(ctx, strings.NewReader(rfiles[i]), int64(len(rfiles[i])), false)
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log.Debug("Uploaded random string file to node")
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if err != nil {
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return nil, nil, err
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}
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err = wait(ctx)
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if err != nil {
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return nil, nil, err
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}
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rootAddrs[i] = rk
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}
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return rootAddrs, rfiles, nil
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}
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//generate a random file (string)
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func generateRandomFile() (string, error) {
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//generate a random file size between minFileSize and maxFileSize
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fileSize := rand.Intn(maxFileSize-minFileSize) + minFileSize
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log.Debug(fmt.Sprintf("Generated file with filesize %d kB", fileSize))
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b := make([]byte, fileSize*1024)
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_, err := crand.Read(b)
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if err != nil {
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log.Error("Error generating random file.", "err", err)
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return "", err
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}
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return string(b), nil
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}
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//create a local store for the given node
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func createTestLocalStorageForID(id discover.NodeID, addr *network.BzzAddr) (storage.ChunkStore, string, error) {
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var datadir string
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var err error
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datadir, err = ioutil.TempDir("", fmt.Sprintf("syncer-test-%s", id.TerminalString()))
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if err != nil {
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return nil, "", err
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}
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var store storage.ChunkStore
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params := storage.NewDefaultLocalStoreParams()
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params.ChunkDbPath = datadir
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params.BaseKey = addr.Over()
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store, err = storage.NewTestLocalStoreForAddr(params)
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if err != nil {
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os.RemoveAll(datadir)
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return nil, "", err
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}
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return store, datadir, nil
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}
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