2c5648d891
* Fix some typos * Fix some mistakes * Revert 4byte.json * Fix an incorrect fix * Change files to fails
393 lines
10 KiB
Go
393 lines
10 KiB
Go
// Copyright 2020 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 client
|
|
|
|
import (
|
|
"math/rand"
|
|
"strconv"
|
|
"sync"
|
|
"sync/atomic"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common/mclock"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/ethdb/memorydb"
|
|
"github.com/ethereum/go-ethereum/p2p/enode"
|
|
"github.com/ethereum/go-ethereum/p2p/enr"
|
|
)
|
|
|
|
const (
|
|
spTestNodes = 1000
|
|
spTestTarget = 5
|
|
spTestLength = 10000
|
|
spMinTotal = 40000
|
|
spMaxTotal = 50000
|
|
)
|
|
|
|
func testNodeID(i int) enode.ID {
|
|
return enode.ID{42, byte(i % 256), byte(i / 256)}
|
|
}
|
|
|
|
func testNodeIndex(id enode.ID) int {
|
|
if id[0] != 42 {
|
|
return -1
|
|
}
|
|
return int(id[1]) + int(id[2])*256
|
|
}
|
|
|
|
type ServerPoolTest struct {
|
|
db ethdb.KeyValueStore
|
|
clock *mclock.Simulated
|
|
quit chan chan struct{}
|
|
preNeg, preNegFail bool
|
|
sp *ServerPool
|
|
spi enode.Iterator
|
|
input enode.Iterator
|
|
testNodes []spTestNode
|
|
trusted []string
|
|
waitCount, waitEnded int32
|
|
|
|
// preNegLock protects the cycle counter, testNodes list and its connected field
|
|
// (accessed from both the main thread and the preNeg callback)
|
|
preNegLock sync.Mutex
|
|
queryWg *sync.WaitGroup // a new wait group is created each time the simulation is started
|
|
stopping bool // stopping avoid calling queryWg.Add after queryWg.Wait
|
|
|
|
cycle, conn, servedConn int
|
|
serviceCycles, dialCount int
|
|
disconnect map[int][]int
|
|
}
|
|
|
|
type spTestNode struct {
|
|
connectCycles, waitCycles int
|
|
nextConnCycle, totalConn int
|
|
connected, service bool
|
|
node *enode.Node
|
|
}
|
|
|
|
func newServerPoolTest(preNeg, preNegFail bool) *ServerPoolTest {
|
|
nodes := make([]*enode.Node, spTestNodes)
|
|
for i := range nodes {
|
|
nodes[i] = enode.SignNull(&enr.Record{}, testNodeID(i))
|
|
}
|
|
return &ServerPoolTest{
|
|
clock: &mclock.Simulated{},
|
|
db: memorydb.New(),
|
|
input: enode.CycleNodes(nodes),
|
|
testNodes: make([]spTestNode, spTestNodes),
|
|
preNeg: preNeg,
|
|
preNegFail: preNegFail,
|
|
}
|
|
}
|
|
|
|
func (s *ServerPoolTest) beginWait() {
|
|
// ensure that dialIterator and the maximal number of pre-neg queries are not all stuck in a waiting state
|
|
for atomic.AddInt32(&s.waitCount, 1) > preNegLimit {
|
|
atomic.AddInt32(&s.waitCount, -1)
|
|
s.clock.Run(time.Second)
|
|
}
|
|
}
|
|
|
|
func (s *ServerPoolTest) endWait() {
|
|
atomic.AddInt32(&s.waitCount, -1)
|
|
atomic.AddInt32(&s.waitEnded, 1)
|
|
}
|
|
|
|
func (s *ServerPoolTest) addTrusted(i int) {
|
|
s.trusted = append(s.trusted, enode.SignNull(&enr.Record{}, testNodeID(i)).String())
|
|
}
|
|
|
|
func (s *ServerPoolTest) start() {
|
|
var testQuery QueryFunc
|
|
s.queryWg = new(sync.WaitGroup)
|
|
if s.preNeg {
|
|
testQuery = func(node *enode.Node) int {
|
|
s.preNegLock.Lock()
|
|
if s.stopping {
|
|
s.preNegLock.Unlock()
|
|
return 0
|
|
}
|
|
s.queryWg.Add(1)
|
|
idx := testNodeIndex(node.ID())
|
|
n := &s.testNodes[idx]
|
|
canConnect := !n.connected && n.connectCycles != 0 && s.cycle >= n.nextConnCycle
|
|
s.preNegLock.Unlock()
|
|
defer s.queryWg.Done()
|
|
|
|
if s.preNegFail {
|
|
// simulate a scenario where UDP queries never work
|
|
s.beginWait()
|
|
s.clock.Sleep(time.Second * 5)
|
|
s.endWait()
|
|
return -1
|
|
}
|
|
switch idx % 3 {
|
|
case 0:
|
|
// pre-neg returns true only if connection is possible
|
|
if canConnect {
|
|
return 1
|
|
}
|
|
return 0
|
|
case 1:
|
|
// pre-neg returns true but connection might still fail
|
|
return 1
|
|
case 2:
|
|
// pre-neg returns true if connection is possible, otherwise timeout (node unresponsive)
|
|
if canConnect {
|
|
return 1
|
|
}
|
|
s.beginWait()
|
|
s.clock.Sleep(time.Second * 5)
|
|
s.endWait()
|
|
return -1
|
|
}
|
|
return -1
|
|
}
|
|
}
|
|
|
|
requestList := make([]RequestInfo, testReqTypes)
|
|
for i := range requestList {
|
|
requestList[i] = RequestInfo{Name: "testreq" + strconv.Itoa(i), InitAmount: 1, InitValue: 1}
|
|
}
|
|
|
|
s.sp, s.spi = NewServerPool(s.db, []byte("sp:"), 0, testQuery, s.clock, s.trusted, requestList)
|
|
s.sp.AddSource(s.input)
|
|
s.sp.validSchemes = enode.ValidSchemesForTesting
|
|
s.sp.unixTime = func() int64 { return int64(s.clock.Now()) / int64(time.Second) }
|
|
s.disconnect = make(map[int][]int)
|
|
s.sp.Start()
|
|
s.quit = make(chan chan struct{})
|
|
go func() {
|
|
last := int32(-1)
|
|
for {
|
|
select {
|
|
case <-time.After(time.Millisecond * 100):
|
|
c := atomic.LoadInt32(&s.waitEnded)
|
|
if c == last {
|
|
// advance clock if test is stuck (might happen in rare cases)
|
|
s.clock.Run(time.Second)
|
|
}
|
|
last = c
|
|
case quit := <-s.quit:
|
|
close(quit)
|
|
return
|
|
}
|
|
}
|
|
}()
|
|
}
|
|
|
|
func (s *ServerPoolTest) stop() {
|
|
// disable further queries and wait if one is currently running
|
|
s.preNegLock.Lock()
|
|
s.stopping = true
|
|
s.preNegLock.Unlock()
|
|
s.queryWg.Wait()
|
|
|
|
quit := make(chan struct{})
|
|
s.quit <- quit
|
|
<-quit
|
|
s.sp.Stop()
|
|
s.spi.Close()
|
|
s.preNegLock.Lock()
|
|
s.stopping = false
|
|
s.preNegLock.Unlock()
|
|
for i := range s.testNodes {
|
|
n := &s.testNodes[i]
|
|
if n.connected {
|
|
n.totalConn += s.cycle
|
|
}
|
|
n.connected = false
|
|
n.node = nil
|
|
n.nextConnCycle = 0
|
|
}
|
|
s.conn, s.servedConn = 0, 0
|
|
}
|
|
|
|
func (s *ServerPoolTest) run() {
|
|
for count := spTestLength; count > 0; count-- {
|
|
if dcList := s.disconnect[s.cycle]; dcList != nil {
|
|
for _, idx := range dcList {
|
|
n := &s.testNodes[idx]
|
|
s.sp.UnregisterNode(n.node)
|
|
n.totalConn += s.cycle
|
|
s.preNegLock.Lock()
|
|
n.connected = false
|
|
s.preNegLock.Unlock()
|
|
n.node = nil
|
|
s.conn--
|
|
if n.service {
|
|
s.servedConn--
|
|
}
|
|
n.nextConnCycle = s.cycle + n.waitCycles
|
|
}
|
|
delete(s.disconnect, s.cycle)
|
|
}
|
|
if s.conn < spTestTarget {
|
|
s.dialCount++
|
|
s.beginWait()
|
|
s.spi.Next()
|
|
s.endWait()
|
|
dial := s.spi.Node()
|
|
id := dial.ID()
|
|
idx := testNodeIndex(id)
|
|
n := &s.testNodes[idx]
|
|
if !n.connected && n.connectCycles != 0 && s.cycle >= n.nextConnCycle {
|
|
s.conn++
|
|
if n.service {
|
|
s.servedConn++
|
|
}
|
|
n.totalConn -= s.cycle
|
|
s.preNegLock.Lock()
|
|
n.connected = true
|
|
s.preNegLock.Unlock()
|
|
dc := s.cycle + n.connectCycles
|
|
s.disconnect[dc] = append(s.disconnect[dc], idx)
|
|
n.node = dial
|
|
nv, _ := s.sp.RegisterNode(n.node)
|
|
if n.service {
|
|
nv.Served([]ServedRequest{{ReqType: 0, Amount: 100}}, 0)
|
|
}
|
|
}
|
|
}
|
|
s.serviceCycles += s.servedConn
|
|
s.clock.Run(time.Second)
|
|
s.preNegLock.Lock()
|
|
s.cycle++
|
|
s.preNegLock.Unlock()
|
|
}
|
|
}
|
|
|
|
func (s *ServerPoolTest) setNodes(count, conn, wait int, service, trusted bool) (res []int) {
|
|
for ; count > 0; count-- {
|
|
idx := rand.Intn(spTestNodes)
|
|
for s.testNodes[idx].connectCycles != 0 || s.testNodes[idx].connected {
|
|
idx = rand.Intn(spTestNodes)
|
|
}
|
|
res = append(res, idx)
|
|
s.preNegLock.Lock()
|
|
s.testNodes[idx] = spTestNode{
|
|
connectCycles: conn,
|
|
waitCycles: wait,
|
|
service: service,
|
|
}
|
|
s.preNegLock.Unlock()
|
|
if trusted {
|
|
s.addTrusted(idx)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func (s *ServerPoolTest) resetNodes() {
|
|
for i, n := range s.testNodes {
|
|
if n.connected {
|
|
n.totalConn += s.cycle
|
|
s.sp.UnregisterNode(n.node)
|
|
}
|
|
s.preNegLock.Lock()
|
|
s.testNodes[i] = spTestNode{totalConn: n.totalConn}
|
|
s.preNegLock.Unlock()
|
|
}
|
|
s.conn, s.servedConn = 0, 0
|
|
s.disconnect = make(map[int][]int)
|
|
s.trusted = nil
|
|
}
|
|
|
|
func (s *ServerPoolTest) checkNodes(t *testing.T, nodes []int) {
|
|
var sum int
|
|
for _, idx := range nodes {
|
|
n := &s.testNodes[idx]
|
|
if n.connected {
|
|
n.totalConn += s.cycle
|
|
}
|
|
sum += n.totalConn
|
|
n.totalConn = 0
|
|
if n.connected {
|
|
n.totalConn -= s.cycle
|
|
}
|
|
}
|
|
if sum < spMinTotal || sum > spMaxTotal {
|
|
t.Errorf("Total connection amount %d outside expected range %d to %d", sum, spMinTotal, spMaxTotal)
|
|
}
|
|
}
|
|
|
|
func TestServerPool(t *testing.T) { testServerPool(t, false, false) }
|
|
func TestServerPoolWithPreNeg(t *testing.T) { testServerPool(t, true, false) }
|
|
func TestServerPoolWithPreNegFail(t *testing.T) { testServerPool(t, true, true) }
|
|
func testServerPool(t *testing.T, preNeg, fail bool) {
|
|
s := newServerPoolTest(preNeg, fail)
|
|
nodes := s.setNodes(100, 200, 200, true, false)
|
|
s.setNodes(100, 20, 20, false, false)
|
|
s.start()
|
|
s.run()
|
|
s.stop()
|
|
s.checkNodes(t, nodes)
|
|
}
|
|
|
|
func TestServerPoolChangedNodes(t *testing.T) { testServerPoolChangedNodes(t, false) }
|
|
func TestServerPoolChangedNodesWithPreNeg(t *testing.T) { testServerPoolChangedNodes(t, true) }
|
|
func testServerPoolChangedNodes(t *testing.T, preNeg bool) {
|
|
s := newServerPoolTest(preNeg, false)
|
|
nodes := s.setNodes(100, 200, 200, true, false)
|
|
s.setNodes(100, 20, 20, false, false)
|
|
s.start()
|
|
s.run()
|
|
s.checkNodes(t, nodes)
|
|
for i := 0; i < 3; i++ {
|
|
s.resetNodes()
|
|
nodes := s.setNodes(100, 200, 200, true, false)
|
|
s.setNodes(100, 20, 20, false, false)
|
|
s.run()
|
|
s.checkNodes(t, nodes)
|
|
}
|
|
s.stop()
|
|
}
|
|
|
|
func TestServerPoolRestartNoDiscovery(t *testing.T) { testServerPoolRestartNoDiscovery(t, false) }
|
|
func TestServerPoolRestartNoDiscoveryWithPreNeg(t *testing.T) {
|
|
testServerPoolRestartNoDiscovery(t, true)
|
|
}
|
|
func testServerPoolRestartNoDiscovery(t *testing.T, preNeg bool) {
|
|
s := newServerPoolTest(preNeg, false)
|
|
nodes := s.setNodes(100, 200, 200, true, false)
|
|
s.setNodes(100, 20, 20, false, false)
|
|
s.start()
|
|
s.run()
|
|
s.stop()
|
|
s.checkNodes(t, nodes)
|
|
s.input = nil
|
|
s.start()
|
|
s.run()
|
|
s.stop()
|
|
s.checkNodes(t, nodes)
|
|
}
|
|
|
|
func TestServerPoolTrustedNoDiscovery(t *testing.T) { testServerPoolTrustedNoDiscovery(t, false) }
|
|
func TestServerPoolTrustedNoDiscoveryWithPreNeg(t *testing.T) {
|
|
testServerPoolTrustedNoDiscovery(t, true)
|
|
}
|
|
func testServerPoolTrustedNoDiscovery(t *testing.T, preNeg bool) {
|
|
s := newServerPoolTest(preNeg, false)
|
|
trusted := s.setNodes(200, 200, 200, true, true)
|
|
s.input = nil
|
|
s.start()
|
|
s.run()
|
|
s.stop()
|
|
s.checkNodes(t, trusted)
|
|
}
|