plugeth/swarm/network_test.go
lash 5e4fd8e7db swarm/network: Revised depth and health for Kademlia (#18354)
* swarm/network: Revised depth calculation with tests

* swarm/network: WIP remove redundant "full" function

* swarm/network: WIP peerpot refactor

* swarm/network: Make test methods submethod of peerpot and embed kad

* swarm/network: Remove commented out code

* swarm/network: Rename health test functions

* swarm/network: Too many n's

* swarm/network: Change hive Healthy func to accept addresses

* swarm/network: Add Healthy proxy method for api in hive

* swarm/network: Skip failing test out of scope for PR

* swarm/network: Skip all tests dependent on SuggestPeers

* swarm/network: Remove commented code and useless kad Pof member

* swarm/network: Remove more unused code, add counter on depth test errors

* swarm/network: WIP Create Healthy assertion tests

* swarm/network: Roll back health related methods receiver change

* swarm/network: Hardwire network minproxbinsize in swarm sim

* swarm/network: Rework Health test to strict

Pending add test for saturation
And add test for as many as possible up to saturation

* swarm/network: Skip discovery tests (dependent on SuggestPeer)

* swarm/network: Remove useless minProxBinSize in stream

* swarm/network: Remove unnecessary testing.T param to assert health

* swarm/network: Implement t.Helper() in checkHealth

* swarm/network: Rename check back to assert now that we have helper magic

* swarm/network: Revert WaitTillHealthy change (deferred to nxt PR)

* swarm/network: Kademlia tests GotNN => ConnectNN

* swarm/network: Renames and comments

* swarm/network: Add comments
2018-12-22 06:53:30 +01:00

503 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 swarm
import (
"context"
"flag"
"fmt"
"io/ioutil"
"math/rand"
"os"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
"github.com/ethereum/go-ethereum/swarm/api"
"github.com/ethereum/go-ethereum/swarm/network/simulation"
"github.com/ethereum/go-ethereum/swarm/storage"
colorable "github.com/mattn/go-colorable"
)
var (
loglevel = flag.Int("loglevel", 2, "verbosity of logs")
longrunning = flag.Bool("longrunning", false, "do run long-running tests")
waitKademlia = flag.Bool("waitkademlia", false, "wait for healthy kademlia before checking files availability")
)
func init() {
rand.Seed(time.Now().UnixNano())
flag.Parse()
log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(*loglevel), log.StreamHandler(colorable.NewColorableStderr(), log.TerminalFormat(true))))
}
// TestSwarmNetwork runs a series of test simulations with
// static and dynamic Swarm nodes in network simulation, by
// uploading files to every node and retrieving them.
func TestSwarmNetwork(t *testing.T) {
for _, tc := range []struct {
name string
steps []testSwarmNetworkStep
options *testSwarmNetworkOptions
disabled bool
}{
{
name: "10_nodes",
steps: []testSwarmNetworkStep{
{
nodeCount: 10,
},
},
options: &testSwarmNetworkOptions{
Timeout: 45 * time.Second,
},
},
{
name: "10_nodes_skip_check",
steps: []testSwarmNetworkStep{
{
nodeCount: 10,
},
},
options: &testSwarmNetworkOptions{
Timeout: 45 * time.Second,
SkipCheck: true,
},
},
{
name: "50_nodes",
steps: []testSwarmNetworkStep{
{
nodeCount: 50,
},
},
options: &testSwarmNetworkOptions{
Timeout: 3 * time.Minute,
},
disabled: !*longrunning,
},
{
name: "50_nodes_skip_check",
steps: []testSwarmNetworkStep{
{
nodeCount: 50,
},
},
options: &testSwarmNetworkOptions{
Timeout: 3 * time.Minute,
SkipCheck: true,
},
disabled: !*longrunning,
},
{
name: "inc_node_count",
steps: []testSwarmNetworkStep{
{
nodeCount: 2,
},
{
nodeCount: 5,
},
{
nodeCount: 10,
},
},
options: &testSwarmNetworkOptions{
Timeout: 90 * time.Second,
},
disabled: !*longrunning,
},
{
name: "dec_node_count",
steps: []testSwarmNetworkStep{
{
nodeCount: 10,
},
{
nodeCount: 6,
},
{
nodeCount: 3,
},
},
options: &testSwarmNetworkOptions{
Timeout: 90 * time.Second,
},
disabled: !*longrunning,
},
{
name: "dec_inc_node_count",
steps: []testSwarmNetworkStep{
{
nodeCount: 3,
},
{
nodeCount: 1,
},
{
nodeCount: 5,
},
},
options: &testSwarmNetworkOptions{
Timeout: 90 * time.Second,
},
},
{
name: "inc_dec_node_count",
steps: []testSwarmNetworkStep{
{
nodeCount: 3,
},
{
nodeCount: 5,
},
{
nodeCount: 25,
},
{
nodeCount: 10,
},
{
nodeCount: 4,
},
},
options: &testSwarmNetworkOptions{
Timeout: 5 * time.Minute,
},
disabled: !*longrunning,
},
{
name: "inc_dec_node_count_skip_check",
steps: []testSwarmNetworkStep{
{
nodeCount: 3,
},
{
nodeCount: 5,
},
{
nodeCount: 25,
},
{
nodeCount: 10,
},
{
nodeCount: 4,
},
},
options: &testSwarmNetworkOptions{
Timeout: 5 * time.Minute,
SkipCheck: true,
},
disabled: !*longrunning,
},
} {
if tc.disabled {
continue
}
t.Run(tc.name, func(t *testing.T) {
testSwarmNetwork(t, tc.options, tc.steps...)
})
}
}
// testSwarmNetworkStep is the configuration
// for the state of the simulation network.
type testSwarmNetworkStep struct {
// number of swarm nodes that must be in the Up state
nodeCount int
}
// file represents the file uploaded on a particular node.
type file struct {
addr storage.Address
data string
nodeID enode.ID
}
// check represents a reference to a file that is retrieved
// from a particular node.
type check struct {
key string
nodeID enode.ID
}
// testSwarmNetworkOptions contains optional parameters for running
// testSwarmNetwork.
type testSwarmNetworkOptions struct {
Timeout time.Duration
SkipCheck bool
}
// testSwarmNetwork is a helper function used for testing different
// static and dynamic Swarm network simulations.
// It is responsible for:
// - Setting up a Swarm network simulation, and updates the number of nodes within the network on every step according to steps.
// - Uploading a unique file to every node on every step.
// - May wait for Kademlia on every node to be healthy.
// - Checking if a file is retrievable from all nodes.
func testSwarmNetwork(t *testing.T, o *testSwarmNetworkOptions, steps ...testSwarmNetworkStep) {
if o == nil {
o = new(testSwarmNetworkOptions)
}
sim := simulation.New(map[string]simulation.ServiceFunc{
"swarm": func(ctx *adapters.ServiceContext, bucket *sync.Map) (s node.Service, cleanup func(), err error) {
config := api.NewConfig()
dir, err := ioutil.TempDir("", "swarm-network-test-node")
if err != nil {
return nil, nil, err
}
cleanup = func() {
err := os.RemoveAll(dir)
if err != nil {
log.Error("cleaning up swarm temp dir", "err", err)
}
}
config.Path = dir
privkey, err := crypto.GenerateKey()
if err != nil {
return nil, cleanup, err
}
config.Init(privkey)
config.DeliverySkipCheck = o.SkipCheck
config.Port = ""
swarm, err := NewSwarm(config, nil)
if err != nil {
return nil, cleanup, err
}
bucket.Store(simulation.BucketKeyKademlia, swarm.bzz.Hive.Kademlia)
log.Info("new swarm", "bzzKey", config.BzzKey, "baseAddr", fmt.Sprintf("%x", swarm.bzz.BaseAddr()))
return swarm, cleanup, nil
},
})
defer sim.Close()
ctx := context.Background()
if o.Timeout > 0 {
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, o.Timeout)
defer cancel()
}
files := make([]file, 0)
for i, step := range steps {
log.Debug("test sync step", "n", i+1, "nodes", step.nodeCount)
change := step.nodeCount - len(sim.UpNodeIDs())
if change > 0 {
_, err := sim.AddNodesAndConnectChain(change)
if err != nil {
t.Fatal(err)
}
} else if change < 0 {
_, err := sim.StopRandomNodes(-change)
if err != nil {
t.Fatal(err)
}
} else {
t.Logf("step %v: no change in nodes", i)
continue
}
var checkStatusM sync.Map
var nodeStatusM sync.Map
var totalFoundCount uint64
result := sim.Run(ctx, func(ctx context.Context, sim *simulation.Simulation) error {
nodeIDs := sim.UpNodeIDs()
rand.Shuffle(len(nodeIDs), func(i, j int) {
nodeIDs[i], nodeIDs[j] = nodeIDs[j], nodeIDs[i]
})
for _, id := range nodeIDs {
key, data, err := uploadFile(sim.Service("swarm", id).(*Swarm))
if err != nil {
return err
}
log.Trace("file uploaded", "node", id, "key", key.String())
files = append(files, file{
addr: key,
data: data,
nodeID: id,
})
}
if *waitKademlia {
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.
for {
if retrieve(sim, files, &checkStatusM, &nodeStatusM, &totalFoundCount) == 0 {
return nil
}
}
})
if result.Error != nil {
t.Fatal(result.Error)
}
log.Debug("done: test sync step", "n", i+1, "nodes", step.nodeCount)
}
}
// uploadFile, uploads a short file to the swarm instance
// using the api.Put method.
func uploadFile(swarm *Swarm) (storage.Address, string, error) {
b := make([]byte, 8)
_, err := rand.Read(b)
if err != nil {
return nil, "", err
}
// File data is very short, but it is ensured that its
// uniqueness is very certain.
data := fmt.Sprintf("test content %s %x", time.Now().Round(0), b)
ctx := context.TODO()
k, wait, err := swarm.api.Put(ctx, data, "text/plain", false)
if err != nil {
return nil, "", err
}
if wait != nil {
err = wait(ctx)
}
return k, data, err
}
// retrieve is the function that is used for checking the availability of
// uploaded files in testSwarmNetwork test helper function.
func retrieve(
sim *simulation.Simulation,
files []file,
checkStatusM *sync.Map,
nodeStatusM *sync.Map,
totalFoundCount *uint64,
) (missing uint64) {
rand.Shuffle(len(files), func(i, j int) {
files[i], files[j] = files[j], files[i]
})
var totalWg sync.WaitGroup
errc := make(chan error)
nodeIDs := sim.UpNodeIDs()
totalCheckCount := len(nodeIDs) * len(files)
for _, id := range nodeIDs {
if _, ok := nodeStatusM.Load(id); ok {
continue
}
start := time.Now()
var checkCount uint64
var foundCount uint64
totalWg.Add(1)
var wg sync.WaitGroup
swarm := sim.Service("swarm", id).(*Swarm)
for _, f := range files {
checkKey := check{
key: f.addr.String(),
nodeID: id,
}
if n, ok := checkStatusM.Load(checkKey); ok && n.(int) == 0 {
continue
}
checkCount++
wg.Add(1)
go func(f file, id enode.ID) {
defer wg.Done()
log.Debug("api get: check file", "node", id.String(), "key", f.addr.String(), "total files found", atomic.LoadUint64(totalFoundCount))
r, _, _, _, err := swarm.api.Get(context.TODO(), api.NOOPDecrypt, f.addr, "/")
if err != nil {
errc <- fmt.Errorf("api get: node %s, key %s, kademlia %s: %v", id, f.addr, swarm.bzz.Hive, err)
return
}
d, err := ioutil.ReadAll(r)
if err != nil {
errc <- fmt.Errorf("api get: read response: node %s, key %s: kademlia %s: %v", id, f.addr, swarm.bzz.Hive, err)
return
}
data := string(d)
if data != f.data {
errc <- fmt.Errorf("file contend missmatch: node %s, key %s, expected %q, got %q", id, f.addr, f.data, data)
return
}
checkStatusM.Store(checkKey, 0)
atomic.AddUint64(&foundCount, 1)
log.Info("api get: file found", "node", id.String(), "key", f.addr.String(), "content", data, "files found", atomic.LoadUint64(&foundCount))
}(f, id)
}
go func(id enode.ID) {
defer totalWg.Done()
wg.Wait()
atomic.AddUint64(totalFoundCount, foundCount)
if foundCount == checkCount {
log.Info("all files are found for node", "id", id.String(), "duration", time.Since(start))
nodeStatusM.Store(id, 0)
return
}
log.Debug("files missing for node", "id", id.String(), "check", checkCount, "found", foundCount)
}(id)
}
go func() {
totalWg.Wait()
close(errc)
}()
var errCount int
for err := range errc {
if err != nil {
errCount++
}
log.Warn(err.Error())
}
log.Info("check stats", "total check count", totalCheckCount, "total files found", atomic.LoadUint64(totalFoundCount), "total errors", errCount)
return uint64(totalCheckCount) - atomic.LoadUint64(totalFoundCount)
}