plugeth/swarm/network/stream/snapshot_retrieval_test.go
Balint Gabor 3ff2f75636
swarm: Chunk refactor (#17659)
Co-authored-by: Janos Guljas <janos@resenje.org>
Co-authored-by: Balint Gabor <balint.g@gmail.com>
Co-authored-by: Anton Evangelatov <anton.evangelatov@gmail.com>
Co-authored-by: Viktor Trón <viktor.tron@gmail.com>
2018-09-13 11:42:19 +02:00

405 lines
12 KiB
Go

// 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"
"fmt"
"os"
"sync"
"testing"
"time"
"github.com/ethereum/go-ethereum/node"
"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"
)
//constants for random file generation
const (
minFileSize = 2
maxFileSize = 40
)
//This test is a retrieval test for nodes.
//A configurable number of nodes can be
//provided to the test.
//Files are uploaded to nodes, other nodes try to retrieve the file
//Number of nodes can be provided via commandline too.
func TestFileRetrieval(t *testing.T) {
if *nodes != 0 {
err := runFileRetrievalTest(*nodes)
if err != nil {
t.Fatal(err)
}
} else {
nodeCnt := []int{16}
//if the `longrunning` flag has been provided
//run more test combinations
if *longrunning {
nodeCnt = append(nodeCnt, 32, 64, 128)
}
for _, n := range nodeCnt {
err := runFileRetrievalTest(n)
if err != nil {
t.Fatal(err)
}
}
}
}
//This test is a retrieval test for nodes.
//One node is randomly selected to be the pivot node.
//A configurable number of chunks and nodes can be
//provided to the test, the number of chunks is uploaded
//to the pivot node and other nodes try to retrieve the chunk(s).
//Number of chunks and nodes can be provided via commandline too.
func TestRetrieval(t *testing.T) {
//if nodes/chunks have been provided via commandline,
//run the tests with these values
if *nodes != 0 && *chunks != 0 {
err := runRetrievalTest(*chunks, *nodes)
if err != nil {
t.Fatal(err)
}
} else {
var nodeCnt []int
var chnkCnt []int
//if the `longrunning` flag has been provided
//run more test combinations
if *longrunning {
nodeCnt = []int{16, 32, 128}
chnkCnt = []int{4, 32, 256}
} else {
//default test
nodeCnt = []int{16}
chnkCnt = []int{32}
}
for _, n := range nodeCnt {
for _, c := range chnkCnt {
err := runRetrievalTest(c, n)
if err != nil {
t.Fatal(err)
}
}
}
}
}
/*
The test loads a snapshot file to construct the swarm network,
assuming that the snapshot file identifies a healthy
kademlia network. Nevertheless a health check runs in the
simulation's `action` function.
The snapshot should have 'streamer' in its service list.
*/
func runFileRetrievalTest(nodeCount int) error {
sim := simulation.New(map[string]simulation.ServiceFunc{
"streamer": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) {
id := ctx.Config.ID
addr := network.NewAddrFromNodeID(id)
store, datadir, err := createTestLocalStorageForID(id, addr)
if err != nil {
return nil, nil, err
}
bucket.Store(bucketKeyStore, store)
localStore := store.(*storage.LocalStore)
netStore, err := storage.NewNetStore(localStore, nil)
if err != nil {
return nil, nil, err
}
kad := network.NewKademlia(addr.Over(), network.NewKadParams())
delivery := NewDelivery(kad, netStore)
netStore.NewNetFetcherFunc = network.NewFetcherFactory(delivery.RequestFromPeers, true).New
r := NewRegistry(addr, delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
DoSync: true,
SyncUpdateDelay: 3 * time.Second,
})
fileStore := storage.NewFileStore(netStore, storage.NewFileStoreParams())
bucket.Store(bucketKeyFileStore, fileStore)
cleanup = func() {
os.RemoveAll(datadir)
netStore.Close()
r.Close()
}
return r, cleanup, nil
},
})
defer sim.Close()
log.Info("Initializing test config")
conf := &synctestConfig{}
//map of discover ID to indexes of chunks expected at that ID
conf.idToChunksMap = make(map[discover.NodeID][]int)
//map of overlay address to discover ID
conf.addrToIDMap = make(map[string]discover.NodeID)
//array where the generated chunk hashes will be stored
conf.hashes = make([]storage.Address, 0)
err := sim.UploadSnapshot(fmt.Sprintf("testing/snapshot_%d.json", nodeCount))
if err != nil {
return err
}
ctx, cancelSimRun := context.WithTimeout(context.Background(), 1*time.Minute)
defer cancelSimRun()
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
nodeIDs := sim.UpNodeIDs()
for _, n := range nodeIDs {
//get the kademlia overlay address from this ID
a := network.ToOverlayAddr(n.Bytes())
//append it to the array of all overlay addresses
conf.addrs = append(conf.addrs, a)
//the proximity calculation is on overlay addr,
//the p2p/simulations check func triggers on discover.NodeID,
//so we need to know which overlay addr maps to which nodeID
conf.addrToIDMap[string(a)] = n
}
//an array for the random files
var randomFiles []string
//channel to signal when the upload has finished
//uploadFinished := make(chan struct{})
//channel to trigger new node checks
conf.hashes, randomFiles, err = uploadFilesToNodes(sim)
if err != nil {
return err
}
if _, err := sim.WaitTillHealthy(ctx, 2); err != nil {
return err
}
// File retrieval check is repeated until all uploaded files are retrieved from all nodes
// or until the timeout is reached.
allSuccess := false
for !allSuccess {
for _, id := range nodeIDs {
//for each expected chunk, check if it is in the local store
localChunks := conf.idToChunksMap[id]
localSuccess := true
for _, ch := range localChunks {
//get the real chunk by the index in the index array
chunk := conf.hashes[ch]
log.Trace(fmt.Sprintf("node has chunk: %s:", chunk))
//check if the expected chunk is indeed in the localstore
var err error
//check on the node's FileStore (netstore)
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
return fmt.Errorf("No registry")
}
fileStore := item.(*storage.FileStore)
//check all chunks
for i, hash := range conf.hashes {
reader, _ := fileStore.Retrieve(context.TODO(), hash)
//check that we can read the file size and that it corresponds to the generated file size
if s, err := reader.Size(ctx, nil); err != nil || s != int64(len(randomFiles[i])) {
allSuccess = false
log.Warn("Retrieve error", "err", err, "hash", hash, "nodeId", id)
} else {
log.Debug(fmt.Sprintf("File with root hash %x successfully retrieved", hash))
}
}
if err != nil {
log.Warn(fmt.Sprintf("Chunk %s NOT found for id %s", chunk, id))
localSuccess = false
} else {
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
}
}
allSuccess = localSuccess
}
}
if !allSuccess {
return fmt.Errorf("Not all chunks succeeded!")
}
return nil
})
if result.Error != nil {
return result.Error
}
return nil
}
/*
The test generates the given number of chunks.
The test loads a snapshot file to construct the swarm network,
assuming that the snapshot file identifies a healthy
kademlia network. Nevertheless a health check runs in the
simulation's `action` function.
The snapshot should have 'streamer' in its service list.
*/
func runRetrievalTest(chunkCount int, nodeCount int) error {
sim := simulation.New(map[string]simulation.ServiceFunc{
"streamer": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) {
id := ctx.Config.ID
addr := network.NewAddrFromNodeID(id)
store, datadir, err := createTestLocalStorageForID(id, addr)
if err != nil {
return nil, nil, err
}
bucket.Store(bucketKeyStore, store)
localStore := store.(*storage.LocalStore)
netStore, err := storage.NewNetStore(localStore, nil)
if err != nil {
return nil, nil, err
}
kad := network.NewKademlia(addr.Over(), network.NewKadParams())
delivery := NewDelivery(kad, netStore)
netStore.NewNetFetcherFunc = network.NewFetcherFactory(delivery.RequestFromPeers, true).New
r := NewRegistry(addr, delivery, netStore, state.NewInmemoryStore(), &RegistryOptions{
DoSync: true,
SyncUpdateDelay: 0,
})
fileStore := storage.NewFileStore(netStore, storage.NewFileStoreParams())
bucketKeyFileStore = simulation.BucketKey("filestore")
bucket.Store(bucketKeyFileStore, fileStore)
cleanup = func() {
os.RemoveAll(datadir)
netStore.Close()
r.Close()
}
return r, cleanup, nil
},
})
defer sim.Close()
conf := &synctestConfig{}
//map of discover ID to indexes of chunks expected at that ID
conf.idToChunksMap = make(map[discover.NodeID][]int)
//map of overlay address to discover ID
conf.addrToIDMap = make(map[string]discover.NodeID)
//array where the generated chunk hashes will be stored
conf.hashes = make([]storage.Address, 0)
err := sim.UploadSnapshot(fmt.Sprintf("testing/snapshot_%d.json", nodeCount))
if err != nil {
return err
}
ctx := context.Background()
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
nodeIDs := sim.UpNodeIDs()
for _, n := range nodeIDs {
//get the kademlia overlay address from this ID
a := network.ToOverlayAddr(n.Bytes())
//append it to the array of all overlay addresses
conf.addrs = append(conf.addrs, a)
//the proximity calculation is on overlay addr,
//the p2p/simulations check func triggers on discover.NodeID,
//so we need to know which overlay addr maps to which nodeID
conf.addrToIDMap[string(a)] = n
}
//an array for the random files
var randomFiles []string
//this is the node selected for upload
node := sim.RandomUpNode()
item, ok := sim.NodeItem(node.ID, bucketKeyStore)
if !ok {
return fmt.Errorf("No localstore")
}
lstore := item.(*storage.LocalStore)
conf.hashes, err = uploadFileToSingleNodeStore(node.ID, chunkCount, lstore)
if err != nil {
return err
}
if _, err := sim.WaitTillHealthy(ctx, 2); err != nil {
return err
}
// File retrieval check is repeated until all uploaded files are retrieved from all nodes
// or until the timeout is reached.
allSuccess := false
for !allSuccess {
for _, id := range nodeIDs {
//for each expected chunk, check if it is in the local store
localChunks := conf.idToChunksMap[id]
localSuccess := true
for _, ch := range localChunks {
//get the real chunk by the index in the index array
chunk := conf.hashes[ch]
log.Trace(fmt.Sprintf("node has chunk: %s:", chunk))
//check if the expected chunk is indeed in the localstore
var err error
//check on the node's FileStore (netstore)
item, ok := sim.NodeItem(id, bucketKeyFileStore)
if !ok {
return fmt.Errorf("No registry")
}
fileStore := item.(*storage.FileStore)
//check all chunks
for i, hash := range conf.hashes {
reader, _ := fileStore.Retrieve(context.TODO(), hash)
//check that we can read the file size and that it corresponds to the generated file size
if s, err := reader.Size(ctx, nil); err != nil || s != int64(len(randomFiles[i])) {
allSuccess = false
log.Warn("Retrieve error", "err", err, "hash", hash, "nodeId", id)
} else {
log.Debug(fmt.Sprintf("File with root hash %x successfully retrieved", hash))
}
}
if err != nil {
log.Warn(fmt.Sprintf("Chunk %s NOT found for id %s", chunk, id))
localSuccess = false
} else {
log.Debug(fmt.Sprintf("Chunk %s IS FOUND for id %s", chunk, id))
}
}
allSuccess = localSuccess
}
}
if !allSuccess {
return fmt.Errorf("Not all chunks succeeded!")
}
return nil
})
if result.Error != nil {
return result.Error
}
return nil
}