/
ninja_tortoise_test.go
320 lines (288 loc) · 9.44 KB
/
ninja_tortoise_test.go
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package consensus
import (
"fmt"
"github.com/spacemeshos/go-spacemesh/config"
"github.com/spacemeshos/go-spacemesh/crypto"
"github.com/spacemeshos/go-spacemesh/log"
"github.com/spacemeshos/go-spacemesh/mesh"
"github.com/spacemeshos/go-spacemesh/rand"
"github.com/stretchr/testify/assert"
"math"
"runtime"
"testing"
"time"
)
func TestVec_Add(t *testing.T) {
v := vec{0, 0}
v = v.Add(vec{1, 0})
assert.True(t, v == vec{1, 0}, "vec was wrong %d", v)
v2 := vec{0, 0}
v2 = v2.Add(vec{0, 1})
assert.True(t, v2 == vec{0, 1}, "vec was wrong %d", v2)
}
func TestVec_Negate(t *testing.T) {
v := vec{1, 0}
v = v.Negate()
assert.True(t, v == vec{-1, 0}, "vec was wrong %d", v)
v2 := vec{0, 1}
v2 = v2.Negate()
assert.True(t, v2 == vec{0, -1}, "vec was wrong %d", v2)
}
func TestVec_Multiply(t *testing.T) {
v := vec{1, 0}
v = v.Multiply(5)
assert.True(t, v == vec{5, 0}, "vec was wrong %d", v)
v2 := vec{2, 1}
v2 = v2.Multiply(5)
assert.True(t, v2 == vec{10, 5}, "vec was wrong %d", v2)
}
func TestNinjaTortoise_GlobalOpinion(t *testing.T) {
glo := globalOpinion(vec{2, 0}, 2, 1)
assert.True(t, glo == Support, "vec was wrong %d", glo)
glo = globalOpinion(vec{1, 0}, 2, 1)
assert.True(t, glo == Abstain, "vec was wrong %d", glo)
glo = globalOpinion(vec{0, 2}, 2, 1)
assert.True(t, glo == Against, "vec was wrong %d", glo)
}
func TestForEachInView(t *testing.T) {
blocks := make(map[mesh.BlockID]*mesh.Block)
alg := NewNinjaTortoise(2, log.New("TestForEachInView", "", ""))
l := GenesisLayer()
for _, b := range l.Blocks() {
blocks[b.ID()] = b
}
for i := 0; i < 4; i++ {
lyr := createLayerWithRandVoting(l.Index()+1, []*mesh.Layer{l}, 2, 2)
for _, b := range lyr.Blocks() {
blocks[b.ID()] = b
}
l = lyr
for b, vec := range alg.tTally[alg.pBase] {
alg.Debug("------> tally for block %d according to complete pattern %d are %d", b, alg.pBase, vec)
}
}
mp := map[mesh.BlockID]struct{}{}
foo := func(nb *mesh.Block) {
log.Info("process block %d layer %d", nb.ID(), nb.Layer())
mp[nb.ID()] = struct{}{}
}
ids := map[mesh.BlockID]struct{}{}
for _, b := range l.Blocks() {
ids[b.ID()] = struct{}{}
}
forBlockInView(ids, blocks, 0, foo)
for _, bl := range blocks {
_, found := mp[bl.ID()]
assert.True(t, found, "did not process block ", bl)
}
}
func TestNinjaTortoise_UpdatePatternTally(t *testing.T) {
}
func bToMb(b uint64) uint64 {
return b / 1024 / 1024
}
func PrintMemUsage() {
runtime.GC()
var m runtime.MemStats
runtime.ReadMemStats(&m)
// For info on each, see: https://golang.org/pkg/runtime/#MemStats
fmt.Printf("Alloc = %v MiB", bToMb(m.Alloc))
fmt.Printf("\tTotalAlloc = %v MiB", bToMb(m.TotalAlloc))
fmt.Printf("\tSys = %v MiB", bToMb(m.Sys))
fmt.Printf("\tNumGC = %v\n", m.NumGC)
}
var badblocks = 0.1
func TestNinjaTortoise_S10P9(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 10, 10, badblocks)
}
func TestNinjaTortoise_S50P49(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 50, 50, badblocks)
}
func TestNinjaTortoise_S100P99(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 100, 100, badblocks)
}
func TestNinjaTortoise_S10P7(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 10, 7, badblocks)
}
func TestNinjaTortoise_S50P35(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 50, 35, badblocks)
}
func TestNinjaTortoise_S100P70(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 100, 70, badblocks)
}
func TestNinjaTortoise_S200P199(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 200, 200, badblocks)
}
func TestNinjaTortoise_S200P140(t *testing.T) {
if testing.Short() {
t.Skip()
}
sanity(100, 200, 140, badblocks)
}
//vote explicitly only for previous layer
//correction vectors have no affect here
func TestNinjaTortoise_Sanity1(t *testing.T) {
layerSize := 200
patternSize := 200
layers := 100
alg := sanity(layers, layerSize, patternSize, 0.2)
res := vec{patternSize * (layers - 1), 0}
assert.True(t, alg.tTally[alg.pBase][config.GenesisId] == res, "lyr %d tally was %d insted of %d", layers, alg.tTally[alg.pBase][config.GenesisId], res)
}
func sanity(layers int, layerSize int, patternSize int, badBlks float64) *ninjaTortoise {
alg := NewNinjaTortoise(layerSize, log.New("TestNinjaTortoise_Sanity1", "", ""))
l1 := GenesisLayer()
alg.handleIncomingLayer(l1)
l := createLayerWithRandVoting(l1.Index()+1, []*mesh.Layer{l1}, layerSize, 1)
alg.handleIncomingLayer(l)
for i := 0; i < layers-1; i++ {
lyr := createLayerWithCorruptedPattern(l.Index()+1, l, layerSize, patternSize, badBlks)
start := time.Now()
alg.handleIncomingLayer(lyr)
alg.Info("Time to process layer: %v ", time.Since(start))
l = lyr
}
fmt.Println(fmt.Sprintf("number of layers: %d layer size: %d good pattern size %d bad blocks %v", layers, layerSize, patternSize, badBlks))
PrintMemUsage()
return alg
}
//vote explicitly for two previous layers
//correction vectors compensate for double count
func TestNinjaTortoise_Sanity2(t *testing.T) {
alg := NewNinjaTortoise(3, log.New("TestNinjaTortoise_Sanity2", "", ""))
l := createMulExplicitLayer(0, map[mesh.LayerID]*mesh.Layer{}, nil, 1)
l1 := createMulExplicitLayer(1, map[mesh.LayerID]*mesh.Layer{l.Index(): l}, map[mesh.LayerID][]int{0: {0}}, 3)
l2 := createMulExplicitLayer(2, map[mesh.LayerID]*mesh.Layer{l1.Index(): l1}, map[mesh.LayerID][]int{1: {0, 1, 2}}, 3)
l3 := createMulExplicitLayer(3, map[mesh.LayerID]*mesh.Layer{l2.Index(): l2}, map[mesh.LayerID][]int{l2.Index(): {0}}, 3)
l4 := createMulExplicitLayer(4, map[mesh.LayerID]*mesh.Layer{l2.Index(): l2, l3.Index(): l3}, map[mesh.LayerID][]int{l2.Index(): {1, 2}, l3.Index(): {1, 2}}, 4)
alg.handleIncomingLayer(l)
alg.handleIncomingLayer(l1)
alg.handleIncomingLayer(l2)
alg.handleIncomingLayer(l3)
alg.handleIncomingLayer(l4)
for b, vec := range alg.tTally[alg.pBase] {
alg.Info("------> tally for block %d according to complete pattern %d are %d", b, alg.pBase, vec)
}
assert.True(t, alg.tTally[alg.pBase][l.Blocks()[0].ID()] == vec{5, 0}, "lyr %d tally was %d insted of %d", 0, alg.tTally[alg.pBase][l.Blocks()[0].ID()], vec{5, 0})
}
func createMulExplicitLayer(index mesh.LayerID, prev map[mesh.LayerID]*mesh.Layer, patterns map[mesh.LayerID][]int, blocksInLayer int) *mesh.Layer {
ts := time.Now()
coin := false
// just some random Data
data := []byte(crypto.UUIDString())
l := mesh.NewLayer(index)
layerBlocks := make([]mesh.BlockID, 0, blocksInLayer)
for i := 0; i < blocksInLayer; i++ {
bl := mesh.NewBlock(coin, data, ts, 1)
layerBlocks = append(layerBlocks, bl.ID())
for lyrId, pat := range patterns {
for _, id := range pat {
b := prev[lyrId].Blocks()[id]
bl.AddVote(mesh.BlockID(b.Id))
}
}
if index > 0 {
for _, prevBloc := range prev[index-1].Blocks() {
bl.AddView(mesh.BlockID(prevBloc.Id))
}
}
l.AddBlock(bl)
}
log.Info("Created mesh.LayerID %d with blocks %d", l.Index(), layerBlocks)
return l
}
func createLayerWithCorruptedPattern(index mesh.LayerID, prev *mesh.Layer, blocksInLayer int, patternSize int, badBlocks float64) *mesh.Layer {
ts := time.Now()
coin := false
// just some random Data
data := []byte(crypto.UUIDString())
l := mesh.NewLayer(index)
blocks := prev.Blocks()
blocksInPrevLayer := len(blocks)
goodPattern := chooseRandomPattern(blocksInPrevLayer, int(math.Min(float64(blocksInPrevLayer), float64(patternSize))))
badPattern := chooseRandomPattern(blocksInPrevLayer, int(math.Min(float64(blocksInPrevLayer), float64(patternSize))))
gbs := int(float64(blocksInLayer) * (1 - badBlocks))
layerBlocks := make([]mesh.BlockID, 0, blocksInLayer)
for i := 0; i < gbs; i++ {
bl := addPattern(mesh.NewBlock(coin, data, ts, 1), goodPattern, prev)
layerBlocks = append(layerBlocks, bl.ID())
l.AddBlock(bl)
}
for i := 0; i < blocksInLayer-gbs; i++ {
bl := addPattern(mesh.NewBlock(coin, data, ts, 1), badPattern, prev)
layerBlocks = append(layerBlocks, bl.ID())
l.AddBlock(bl)
}
log.Info("Created layer Id %d with blocks %d", l.Index(), layerBlocks)
return l
}
func addPattern(bl *mesh.Block, goodPattern []int, prev *mesh.Layer) *mesh.Block {
for _, id := range goodPattern {
b := prev.Blocks()[id]
bl.AddVote(mesh.BlockID(b.Id))
}
for _, prevBloc := range prev.Blocks() {
bl.AddView(mesh.BlockID(prevBloc.Id))
}
return bl
}
func createLayerWithRandVoting(index mesh.LayerID, prev []*mesh.Layer, blocksInLayer int, patternSize int) *mesh.Layer {
ts := time.Now()
coin := false
// just some random Data
data := []byte(crypto.UUIDString())
l := mesh.NewLayer(index)
var patterns [][]int
for _, l := range prev {
blocks := l.Blocks()
blocksInPrevLayer := len(blocks)
patterns = append(patterns, chooseRandomPattern(blocksInPrevLayer, int(math.Min(float64(blocksInPrevLayer), float64(patternSize)))))
}
layerBlocks := make([]mesh.BlockID, 0, blocksInLayer)
for i := 0; i < blocksInLayer; i++ {
bl := mesh.NewBlock(coin, data, ts, 1)
layerBlocks = append(layerBlocks, bl.ID())
for idx, pat := range patterns {
for _, id := range pat {
b := prev[idx].Blocks()[id]
bl.AddVote(mesh.BlockID(b.Id))
}
}
for _, prevBloc := range prev[0].Blocks() {
bl.AddView(mesh.BlockID(prevBloc.Id))
}
l.AddBlock(bl)
}
log.Info("Created mesh.LayerID %d with blocks %d", l.Index(), layerBlocks)
return l
}
func chooseRandomPattern(blocksInLayer int, patternSize int) []int {
rand.Seed(time.Now().UnixNano())
p := rand.Perm(blocksInLayer)
indexes := make([]int, 0, patternSize)
for _, r := range p[:patternSize] {
indexes = append(indexes, r)
}
return indexes
}