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consensus_test.go
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consensus_test.go
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package bdls
import (
"bytes"
"crypto/ecdsa"
"crypto/rand"
"encoding/binary"
"encoding/hex"
fmt "fmt"
"io"
"log"
math "math"
mrand "math/rand"
"net/http"
_ "net/http/pprof"
"os"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
"code.cloudfoundry.org/bytefmt"
"github.com/BDLS-bft/bdls/crypto/blake2b"
"github.com/davecgh/go-spew/spew"
proto "github.com/gogo/protobuf/proto"
"github.com/olekukonko/tablewriter"
"github.com/stretchr/testify/assert"
)
// init will listen for 6060 while debugging
func init() {
go func() {
log.Println(http.ListenAndServe("0.0.0.0:6060", nil))
}()
}
// (testing augumented function) SetLeader sets a fixed leader for consensus
func (c *Consensus) SetLeader(key *ecdsa.PublicKey) {
coord := DefaultPubKeyToIdentity(key)
c.fixedLeader = &coord
}
// (testing augumented function) AddParticipant add a new participant in the quorum
func (c *Consensus) AddParticipant(key *ecdsa.PublicKey) {
coord := DefaultPubKeyToIdentity(key)
for k := range c.participants {
if c.participants[k] == coord {
return
}
}
c.participants = append(c.participants, coord)
c.numIdentities++
}
// createConsensus creates a valid consensus object with given height & round and random state
// the c.particpants[0] will always be the consensus's publickey
func createConsensus(t *testing.T, height uint64, round uint64, quorum []*ecdsa.PublicKey) *Consensus {
privateKey, err := ecdsa.GenerateKey(S256Curve, rand.Reader)
assert.Nil(t, err)
// mock data
initialData := make([]byte, 1024)
_, err = io.ReadFull(rand.Reader, initialData)
assert.Nil(t, err)
// mock config
config := new(Config)
config.Epoch = time.Now()
config.CurrentHeight = height
config.PrivateKey = privateKey
config.StateCompare = func(a State, b State) int { return bytes.Compare(a, b) }
config.StateValidate = func(a State) bool { return true }
// add all input keys as the quorum
config.Participants = []Identity{DefaultPubKeyToIdentity(&privateKey.PublicKey)}
// and myself
for _, pubkey := range quorum {
config.Participants = append(config.Participants, DefaultPubKeyToIdentity(pubkey))
}
consensus := new(Consensus)
consensus.init(config)
consensus.switchRound(round)
return consensus
}
// TestProposeMultipleRoundChanges for OOM attack
func TestProposeMultipleRoundChanges(t *testing.T) {
t.Log("a participant propose multiple <roundchange> in different rounds")
privateKey, err := ecdsa.GenerateKey(S256Curve, rand.Reader)
assert.Nil(t, err)
consensus := createConsensus(t, 1, 0, []*ecdsa.PublicKey{&privateKey.PublicKey})
state := make([]byte, 1024)
_, err = io.ReadFull(rand.Reader, state)
assert.Nil(t, err)
m, signedRc, privateKey := createRoundChangeMessageState(t, 2, 0, state)
consensus.AddParticipant(&privateKey.PublicKey)
highest := uint64(0)
for i := 0; i < 10000; i++ {
round := uint64(mrand.Int())
if round > highest {
highest = round
}
// change round and re-sign
m.Round = round
signedRc.Sign(m, privateKey)
bts, err := proto.Marshal(signedRc)
assert.Nil(t, err)
_ = consensus.ReceiveMessage(bts, time.Now())
}
// count messages
count := 0
var lastOne messageTuple
for elem := consensus.rounds.Front(); elem != nil; elem = elem.Next() {
round := elem.Value.(*consensusRound)
count += len(round.roundChanges)
if elem.Next() == nil {
assert.Equal(t, 1, len(round.roundChanges))
lastOne = round.roundChanges[0]
}
}
assert.Equal(t, 1, count)
assert.Equal(t, highest, lastOne.Message.Round)
}
func TestMultipleCommits(t *testing.T) {
privateKey, err := ecdsa.GenerateKey(S256Curve, rand.Reader)
assert.Nil(t, err)
consensus := createConsensus(t, 0, 0, []*ecdsa.PublicKey{&privateKey.PublicKey})
state := make([]byte, 1024)
_, signed, _ := createCommitMessageSigner(t, 1, 0, state, privateKey)
// hack to set current round status
// add 20 random participants to prevent from height decide
for i := 0; i < 20; i++ {
privateKey, err := ecdsa.GenerateKey(S256Curve, rand.Reader)
assert.Nil(t, err)
consensus.AddParticipant(&privateKey.PublicKey)
}
consensus.currentRound.Stage = stageCommit
consensus.currentRound.LockedState = state
consensus.currentRound.LockedStateHash = consensus.stateHash(state)
bts, err := proto.Marshal(signed)
assert.Nil(t, err)
// and add all messages
for i := 0; i < 10000; i++ {
err = consensus.ReceiveMessage(bts, time.Now())
assert.Nil(t, err)
}
// count messages
count := 0
for elem := consensus.rounds.Front(); elem != nil; elem = elem.Next() {
round := elem.Value.(*consensusRound)
count += len(round.commits)
if elem.Next() == nil {
assert.Equal(t, 1, len(round.commits))
}
}
assert.Equal(t, 1, count)
}
func TestMaximalLocked(t *testing.T) {
consensus := createConsensus(t, 0, 0, nil)
for i := 0; i < 1000; i++ {
m, _, _, _ := createLockMessage(t, 20, 1, 0, 1, 0)
consensus.locks = append(consensus.locks, messageTuple{Message: m})
}
maximal := consensus.maximalLocked()
for k := range consensus.locks {
assert.True(t, consensus.stateCompare(maximal, consensus.locks[k].Message.State) >= 0)
}
}
func TestRoundSequentiality(t *testing.T) {
t.Log("test getRound() with random number, and round list is sequential")
consensus := createConsensus(t, 0, 0, nil)
var round uint64
for i := 0; i < 10000; i++ {
_ = binary.Read(rand.Reader, binary.LittleEndian, &round)
consensus.getRound(round, false)
}
// sequentiality check
var last = consensus.rounds.Front()
for elem := last.Next(); elem != nil; elem = elem.Next() {
assert.LessOrEqual(t, last.Value.(*consensusRound).RoundNumber, elem.Value.(*consensusRound).RoundNumber)
last = elem
}
}
func TestLockMessageRoundSwitch(t *testing.T) {
t.Log("test switching to higher rounds using <lock> message and replace locks")
_, sp, privateKey, proofKeys := createLockMessage(t, 20, 1, 10, 1, 10)
consensus := createConsensus(t, 0, 1, proofKeys)
consensus.SetLeader(&privateKey.PublicKey)
// round switch to 10
consensus.AddParticipant(&privateKey.PublicKey)
bts, err := proto.Marshal(sp)
assert.Nil(t, err)
err = consensus.ReceiveMessage(bts, time.Now())
assert.Nil(t, err)
// assert length of locks to 1
assert.Equal(t, 1, len(consensus.locks))
// round switch to 11 with new B', resetting particpants
consensus.participants = nil
m, sp, privateKey, proofKeys := createLockMessage(t, 20, 1, 11, 1, 11)
consensus.AddParticipant(&privateKey.PublicKey)
consensus.SetLeader(&privateKey.PublicKey)
for k := range proofKeys {
consensus.AddParticipant(proofKeys[k])
}
bts, err = proto.Marshal(sp)
assert.Nil(t, err)
consensus.numIdentities = 20
err = consensus.ReceiveMessage(bts, time.Now())
assert.Nil(t, err)
// assert length of locks to 2
assert.Equal(t, 2, len(consensus.locks))
// round switch to 12 with old B', resetting particpants
consensus.participants = nil
consensus.numIdentities = 0
_, sp, privateKey, proofKeys = createLockMessageState(t, 20, m.State, 1, 12, 1, 12)
consensus.AddParticipant(&privateKey.PublicKey)
consensus.SetLeader(&privateKey.PublicKey)
for k := range proofKeys {
consensus.AddParticipant(proofKeys[k])
}
bts, err = proto.Marshal(sp)
assert.Nil(t, err)
err = consensus.ReceiveMessage(bts, time.Now())
assert.Nil(t, err)
// assert length of locks to 2
assert.Equal(t, 2, len(consensus.locks))
}
func TestLockReleaseMessageRoundSwitch(t *testing.T) {
t.Log("test switching to higher rounds using <lock-release> message and replace locks")
_, sp, privateKey, proofKeys := createLockReleaseMessage(t, 20, 1, 10, 1, 10)
consensus := createConsensus(t, 0, 1, proofKeys)
consensus.SetLeader(&privateKey.PublicKey)
consensus.currentRound.Stage = stageLockRelease
// round switch to 10
consensus.AddParticipant(&privateKey.PublicKey)
bts, err := proto.Marshal(sp)
assert.Nil(t, err)
err = consensus.ReceiveMessage(bts, time.Now())
assert.Nil(t, err)
// round switch to 11, resetting particpants
consensus.participants = nil
consensus.numIdentities = 0
_, sp, privateKey, proofKeys = createLockReleaseMessage(t, 20, 1, 11, 1, 11)
consensus.AddParticipant(&privateKey.PublicKey)
consensus.SetLeader(&privateKey.PublicKey)
for k := range proofKeys {
consensus.AddParticipant(proofKeys[k])
}
bts, err = proto.Marshal(sp)
assert.Nil(t, err)
err = consensus.ReceiveMessage(bts, time.Now())
assert.Nil(t, err)
// assert length of locks to 1
assert.Equal(t, 1, len(consensus.locks))
}
func TestStageChangeLeader(t *testing.T) {
testStageChange(t, true)
}
func TestStageChangeNonLeader(t *testing.T) {
testStageChange(t, false)
}
func testStageChange(t *testing.T, leader bool) {
t.Log("test lockTimeout stage changing")
quorum := 20
consensus := createConsensus(t, 0, 0, nil)
if leader {
consensus.SetLeader(&consensus.privateKey.PublicKey)
}
// create messages & add participant first
var sps []*SignedProto
for i := 0; i < quorum; i++ {
randstate := make([]byte, 1024)
_, err := io.ReadFull(rand.Reader, randstate)
assert.Nil(t, err)
_, signed, priv := createRoundChangeMessageState(t, 1, 1, randstate)
consensus.AddParticipant(&priv.PublicKey)
sps = append(sps, signed)
}
// receive quorum <roundchange> messages
for i := 0; i < quorum; i++ {
bts, err := proto.Marshal(sps[i])
assert.Nil(t, err)
err = consensus.ReceiveMessage(bts, time.Now())
assert.Nil(t, err)
}
// should be in lockStage
assert.Equal(t, stageLock, consensus.currentRound.Stage)
assert.True(t, !consensus.lockTimeout.IsZero())
// force expire and update
_ = consensus.Update(time.Now().Add(time.Hour))
if leader {
// leader should have switched to stageLockRelease for random content
assert.Equal(t, stageLockRelease, consensus.currentRound.Stage)
} else {
// while non-leader should have switched to stageCommit via timeout
assert.Equal(t, stageCommit, consensus.currentRound.Stage)
}
if !leader {
// force expire again ,should've switch to lock-release for non-leader
consensus.Update(time.Now().Add(2 * time.Hour))
assert.Equal(t, stageLockRelease, consensus.currentRound.Stage)
}
// force expire again ,should've switch to roundchanging
_ = consensus.Update(time.Now().Add(3 * time.Hour))
assert.Equal(t, stageRoundChanging, consensus.currentRound.Stage)
}
func TestCommitTimeout(t *testing.T) {
t.Log("test commitTimeout stage changing")
consensus := createConsensus(t, 0, 0, nil)
consensus.currentRound.Stage = stageCommit
// add some locked roundchanges
for i := 0; i < 20; i++ {
randstate := make([]byte, 1024)
_, err := io.ReadFull(rand.Reader, randstate)
assert.Nil(t, err)
// monotonically increase rounds
m, signed, _ := createRoundChangeMessageState(t, 1, uint64(i), randstate)
consensus.locks = append(consensus.locks, messageTuple{Message: m, Signed: signed})
}
consensus.commitTimeout = time.Now()
// force expire and update
consensus.Update(time.Now().Add(time.Hour))
// should change to stageLockRelease
assert.Equal(t, stageLockRelease, consensus.currentRound.Stage)
assert.Equal(t, 1, len(consensus.locks))
}
///////////////////////////////////////////////////////////////////////////////
//
// consensus functional tests via IPC
//
///////////////////////////////////////////////////////////////////////////////
type testParam struct {
numPeers int
numParticipants int
stopHeight int
latency time.Duration
expectedLatency time.Duration
}
func TestConsensusTableFormat(t *testing.T) {
var params = []testParam{
{
numPeers: 20,
numParticipants: 20,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusFull20Participants(t *testing.T) {
var params = []testParam{
{
numPeers: 20,
numParticipants: 20,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: 20,
numParticipants: 20,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: 20,
numParticipants: 20,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: 20,
numParticipants: 20,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: 20,
numParticipants: 20,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusFull30Participants(t *testing.T) {
var params = []testParam{
{
numPeers: 30,
numParticipants: 30,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: 30,
numParticipants: 30,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: 30,
numParticipants: 30,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: 30,
numParticipants: 30,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: 30,
numParticipants: 30,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusFull50Participants(t *testing.T) {
var params = []testParam{
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusFull80Participants(t *testing.T) {
var params = []testParam{
{
numPeers: 80,
numParticipants: 80,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: 80,
numParticipants: 80,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: 80,
numParticipants: 80,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: 80,
numParticipants: 80,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: 80,
numParticipants: 80,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusOnlyFull100Participants(t *testing.T) {
var params = []testParam{
{
numPeers: 100,
numParticipants: 100,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusFull100Participants(t *testing.T) {
var params = []testParam{
{
numPeers: 100,
numParticipants: 100,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: 100,
numParticipants: 100,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: 100,
numParticipants: 100,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: 100,
numParticipants: 100,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: 100,
numParticipants: 100,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusPartial20Participants(t *testing.T) {
n := 2*(20-1)/3 + 1
var params = []testParam{
{
numPeers: n,
numParticipants: 20,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 20,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 20,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 20,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 20,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusPartial30Participants(t *testing.T) {
n := 2*(30-1)/3 + 1
var params = []testParam{
{
numPeers: n,
numParticipants: 30,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 30,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 30,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 30,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 30,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusPartial50Participants(t *testing.T) {
n := 2*(50-1)/3 + 1
var params = []testParam{
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusPartial80Participants(t *testing.T) {
n := 2*(80-1)/3 + 1
var params = []testParam{
{
numPeers: n,
numParticipants: 80,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 80,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 80,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 80,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 80,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusPartial100Participants(t *testing.T) {
n := 2*(100-1)/3 + 1
var params = []testParam{
{
numPeers: n,
numParticipants: 100,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 100,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 200 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 100,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 300 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 100,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 100,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 1000 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusFull50LatencyHigherThanExpected(t *testing.T) {
var params = []testParam{
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 50 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 150 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 250 * time.Millisecond,
},
{
numPeers: 50,
numParticipants: 50,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
}
beginTest(t, params)
}
func TestConsensusPartial50LatencyHigherThanExpected(t *testing.T) {
n := 2*(50-1)/3 + 1
var params = []testParam{
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 100 * time.Millisecond,
expectedLatency: 50 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 200 * time.Millisecond,
expectedLatency: 100 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 300 * time.Millisecond,
expectedLatency: 150 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 500 * time.Millisecond,
expectedLatency: 250 * time.Millisecond,
},
{
numPeers: n,
numParticipants: 50,
stopHeight: 5,
latency: 1000 * time.Millisecond,
expectedLatency: 500 * time.Millisecond,
},
}
beginTest(t, params)
}
func beginTest(t *testing.T, params []testParam) {
var table = tablewriter.NewWriter(os.Stderr)
table.SetHeader([]string{"DECIDE.AVG", "DECIDE.ROUNDS", "PEER.NUM", "PJ.NUM", "NET.MSGS", "NET.BYTES", "MSG.AVGSIZE", "NET.MSGRATE", "PEER.RATE", "DELAY.MIN", "DELAY.MAX", "DELAY.AVG", "DELAY.EXP"})
table.SetAutoFormatHeaders(false)
table.SetAlignment(tablewriter.ALIGN_LEFT)
for i := 0; i < len(params); i++ {
t.Logf("-=-=- TESTING CASE: [%v/%v] -=-=-", i+1, len(params))
v := testConsensus(t, ¶ms[i])
table.Append(v)
}
table.Render()
}
func testConsensus(t *testing.T, param *testParam) []string {
t.Logf("PARAMETERS: %+v", spew.Sprintf("%+v", param))
// initial data
initialState := make([]byte, 1024)
io.ReadFull(rand.Reader, initialState)
h := blake2b.Sum256(initialState)
t.Logf("%v genesis state for height: 0, hash:%v", time.Now().Format("15:04:05"), hex.EncodeToString(h[:]))
var participants []*ecdsa.PrivateKey
var coords []Identity
for i := 0; i < param.numParticipants; i++ {
privateKey, err := ecdsa.GenerateKey(S256Curve, rand.Reader)
if err != nil {
t.Fatal(err)
}
participants = append(participants, privateKey)
coords = append(coords, DefaultPubKeyToIdentity(&privateKey.PublicKey))
}
// begin proposing
var totalConfirms int64
var totalDuration int64
var totalMessages int64
var totalBytes int64
var minLatency = int64(math.MaxInt64)
var maxLatency = int64(0)
var allLatency = int64(0)
var rounds []string
start := time.Now()
// consensus for one height
consensusOneHeight := func(currentHeight uint64, currentState []byte) {
// randomize participants, fisher yates shuffle
n := uint32(len(participants))
for i := n - 1; i > 0; i-- {
var j uint32
binary.Read(rand.Reader, binary.LittleEndian, &j)
j = j % (i + 1)
participants[i], participants[j] = participants[j], participants[i]
}
var peers []*IPCPeer
// same epoch
epoch := time.Now()
// create numPeer peers
for i := 0; i < param.numPeers; i++ {
// initiate config
config := new(Config)
config.Epoch = epoch
config.CurrentHeight = currentHeight
config.PrivateKey = participants[i] // randomized participants
config.Participants = coords // keep all coords
// should replace with real function
config.StateCompare = func(a State, b State) int { return bytes.Compare(a, b) }
config.StateValidate = func(a State) bool { return true }