lotus/chain/messagepool/selection_test.go

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package messagepool
import (
"context"
"math"
"math/big"
"math/rand"
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"testing"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/chain/messagepool/gasguess"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/chain/types/mock"
"github.com/filecoin-project/lotus/chain/wallet"
"github.com/filecoin-project/specs-actors/actors/builtin"
"github.com/filecoin-project/specs-actors/actors/crypto"
"github.com/ipfs/go-cid"
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"github.com/ipfs/go-datastore"
_ "github.com/filecoin-project/lotus/lib/sigs/bls"
_ "github.com/filecoin-project/lotus/lib/sigs/secp"
logging "github.com/ipfs/go-log"
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)
func makeTestMessage(w *wallet.Wallet, from, to address.Address, nonce uint64, gasLimit int64, gasPrice uint64) *types.SignedMessage {
msg := &types.Message{
From: from,
To: to,
Method: 2,
Value: types.FromFil(0),
Nonce: nonce,
GasLimit: gasLimit,
GasFeeCap: types.NewInt(100 + gasPrice),
GasPremium: types.NewInt(gasPrice),
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}
sig, err := w.Sign(context.TODO(), from, msg.Cid().Bytes())
if err != nil {
panic(err)
}
return &types.SignedMessage{
Message: *msg,
Signature: *sig,
}
}
func makeTestMpool() (*MessagePool, *testMpoolAPI) {
tma := newTestMpoolAPI()
ds := datastore.NewMapDatastore()
mp, err := New(tma, ds, "test")
if err != nil {
panic(err)
}
return mp, tma
}
func TestMessageChains(t *testing.T) {
mp, tma := makeTestMpool()
// the actors
w1, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a1, err := w1.GenerateKey(crypto.SigTypeSecp256k1)
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if err != nil {
t.Fatal(err)
}
w2, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a2, err := w2.GenerateKey(crypto.SigTypeSecp256k1)
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if err != nil {
t.Fatal(err)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
tma.setBalance(a1, 1) // in FIL
// test chain aggregations
// test1: 10 messages from a1 to a2, with increasing gasPerf; it should
// make a single chain with 10 messages given enough balance
mset := make(map[uint64]*types.SignedMessage)
for i := 0; i < 10; i++ {
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(i+1))
mset[uint64(i)] = m
}
baseFee := types.NewInt(0)
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chains := mp.createMessageChains(a1, mset, baseFee, ts)
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if len(chains) != 1 {
t.Fatal("expected a single chain")
}
if len(chains[0].msgs) != 10 {
t.Fatalf("expected 10 messages in the chain but got %d", len(chains[0].msgs))
}
for i, m := range chains[0].msgs {
if m.Message.Nonce != uint64(i) {
t.Fatalf("expected nonce %d but got %d", i, m.Message.Nonce)
}
}
// test2 : 10 messages from a1 to a2, with decreasing gasPerf; it should
// make 10 chains with 1 message each
mset = make(map[uint64]*types.SignedMessage)
for i := 0; i < 10; i++ {
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(10-i))
mset[uint64(i)] = m
}
chains = mp.createMessageChains(a1, mset, baseFee, ts)
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if len(chains) != 10 {
t.Fatal("expected 10 chains")
}
for i, chain := range chains {
if len(chain.msgs) != 1 {
t.Fatalf("expected 1 message in chain %d but got %d", i, len(chain.msgs))
}
}
for i, chain := range chains {
m := chain.msgs[0]
if m.Message.Nonce != uint64(i) {
t.Fatalf("expected nonce %d but got %d", i, m.Message.Nonce)
}
}
// test3a: 10 messages from a1 to a2, with gasPerf increasing in groups of 3; it should
// merge them in two chains, one with 9 messages and one with the last message
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mset = make(map[uint64]*types.SignedMessage)
for i := 0; i < 10; i++ {
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(1+i%3))
mset[uint64(i)] = m
}
chains = mp.createMessageChains(a1, mset, baseFee, ts)
if len(chains) != 2 {
t.Fatal("expected 1 chain")
}
if len(chains[0].msgs) != 9 {
t.Fatalf("expected 9 messages in the chain but got %d", len(chains[0].msgs))
}
if len(chains[1].msgs) != 1 {
t.Fatalf("expected 1 messages in the chain but got %d", len(chains[1].msgs))
}
nextNonce := 0
for _, chain := range chains {
for _, m := range chain.msgs {
if m.Message.Nonce != uint64(nextNonce) {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
}
// test3b: 10 messages from a1 to a2, with gasPerf decreasing in groups of 3 with a bias for the
// earlier chains; it should make 4 chains, the first 3 with 3 messages and the last with
// a single message
mset = make(map[uint64]*types.SignedMessage)
for i := 0; i < 10; i++ {
bias := (12 - i) / 3
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(1+i%3+bias))
mset[uint64(i)] = m
}
chains = mp.createMessageChains(a1, mset, baseFee, ts)
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if len(chains) != 4 {
t.Fatal("expected 4 chains")
}
for i, chain := range chains {
expectedLen := 3
if i > 2 {
expectedLen = 1
}
if len(chain.msgs) != expectedLen {
t.Fatalf("expected %d message in chain %d but got %d", expectedLen, i, len(chain.msgs))
}
}
nextNonce = 0
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for _, chain := range chains {
for _, m := range chain.msgs {
if m.Message.Nonce != uint64(nextNonce) {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
}
// test chain breaks
// test4: 10 messages with non-consecutive nonces; it should make a single chain with just
// the first message
mset = make(map[uint64]*types.SignedMessage)
for i := 0; i < 10; i++ {
m := makeTestMessage(w1, a1, a2, uint64(i*2), gasLimit, uint64(i+1))
mset[uint64(i)] = m
}
chains = mp.createMessageChains(a1, mset, baseFee, ts)
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if len(chains) != 1 {
t.Fatal("expected a single chain")
}
if len(chains[0].msgs) != 1 {
t.Fatalf("expected 1 message in the chain but got %d", len(chains[0].msgs))
}
for i, m := range chains[0].msgs {
if m.Message.Nonce != uint64(i) {
t.Fatalf("expected nonce %d but got %d", i, m.Message.Nonce)
}
}
// test5: 10 messages with increasing gasLimit, except for the 6th message which has less than
// the epoch gasLimit; it should create a single chain with the first 5 messages
mset = make(map[uint64]*types.SignedMessage)
for i := 0; i < 10; i++ {
var m *types.SignedMessage
if i != 5 {
m = makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(i+1))
} else {
m = makeTestMessage(w1, a1, a2, uint64(i), 1, uint64(i+1))
}
mset[uint64(i)] = m
}
chains = mp.createMessageChains(a1, mset, baseFee, ts)
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if len(chains) != 1 {
t.Fatal("expected a single chain")
}
if len(chains[0].msgs) != 5 {
t.Fatalf("expected 5 message in the chain but got %d", len(chains[0].msgs))
}
for i, m := range chains[0].msgs {
if m.Message.Nonce != uint64(i) {
t.Fatalf("expected nonce %d but got %d", i, m.Message.Nonce)
}
}
// test6: one more message than what can fit in a block according to gas limit, with increasing
// gasPerf; it should create a single chain with the max messages
maxMessages := int(build.BlockGasLimit / gasLimit)
nMessages := maxMessages + 1
mset = make(map[uint64]*types.SignedMessage)
for i := 0; i < nMessages; i++ {
mset[uint64(i)] = makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(i+1))
}
chains = mp.createMessageChains(a1, mset, baseFee, ts)
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if len(chains) != 1 {
t.Fatal("expected a single chain")
}
if len(chains[0].msgs) != maxMessages {
t.Fatalf("expected %d message in the chain but got %d", maxMessages, len(chains[0].msgs))
}
for i, m := range chains[0].msgs {
if m.Message.Nonce != uint64(i) {
t.Fatalf("expected nonce %d but got %d", i, m.Message.Nonce)
}
}
// test5: insufficient balance for all messages
tma.setBalanceRaw(a1, types.NewInt(uint64((300)*gasLimit+1)))
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mset = make(map[uint64]*types.SignedMessage)
for i := 0; i < 10; i++ {
mset[uint64(i)] = makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(i+1))
}
chains = mp.createMessageChains(a1, mset, baseFee, ts)
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if len(chains) != 1 {
t.Fatalf("expected a single chain: got %d", len(chains))
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}
if len(chains[0].msgs) != 2 {
t.Fatalf("expected %d message in the chain but got %d", 2, len(chains[0].msgs))
}
for i, m := range chains[0].msgs {
if m.Message.Nonce != uint64(i) {
t.Fatalf("expected nonce %d but got %d", i, m.Message.Nonce)
}
}
}
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func TestMessageChainSkipping(t *testing.T) {
// regression test for chain skip bug
mp, tma := makeTestMpool()
// the actors
w1, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a1, err := w1.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
w2, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a2, err := w2.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
baseFee := types.NewInt(0)
tma.setBalance(a1, 1) // in FIL
tma.setStateNonce(a1, 10)
mset := make(map[uint64]*types.SignedMessage)
for i := 0; i < 20; i++ {
bias := (20 - i) / 3
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(1+i%3+bias))
mset[uint64(i)] = m
}
chains := mp.createMessageChains(a1, mset, baseFee, ts)
if len(chains) != 4 {
t.Fatalf("expected 4 chains, got %d", len(chains))
}
for i, chain := range chains {
var expectedLen int
switch {
case i == 0:
expectedLen = 2
case i > 2:
expectedLen = 2
default:
expectedLen = 3
}
if len(chain.msgs) != expectedLen {
t.Fatalf("expected %d message in chain %d but got %d", expectedLen, i, len(chain.msgs))
}
}
nextNonce := 10
for _, chain := range chains {
for _, m := range chain.msgs {
if m.Message.Nonce != uint64(nextNonce) {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
}
}
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func TestBasicMessageSelection(t *testing.T) {
mp, tma := makeTestMpool()
// the actors
w1, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a1, err := w1.GenerateKey(crypto.SigTypeSecp256k1)
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if err != nil {
t.Fatal(err)
}
w2, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a2, err := w2.GenerateKey(crypto.SigTypeSecp256k1)
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if err != nil {
t.Fatal(err)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
tma.applyBlock(t, block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
tma.setBalance(a1, 1) // in FIL
tma.setBalance(a2, 1) // in FIL
// we create 10 messages from each actor to another, with the first actor paying higher
// gas prices than the second; we expect message selection to order his messages first
for i := 0; i < 10; i++ {
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(2*i+1))
mustAdd(t, mp, m)
}
for i := 0; i < 10; i++ {
m := makeTestMessage(w2, a2, a1, uint64(i), gasLimit, uint64(i+1))
mustAdd(t, mp, m)
}
msgs, err := mp.SelectMessages(ts, 1.0)
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if err != nil {
t.Fatal(err)
}
if len(msgs) != 20 {
t.Fatalf("exptected 20 messages, got %d", len(msgs))
}
nextNonce := 0
for i := 0; i < 10; i++ {
if msgs[i].Message.From != a1 {
t.Fatalf("expected message from actor a1")
}
if msgs[i].Message.Nonce != uint64(nextNonce) {
t.Fatalf("expected nonce %d, got %d", msgs[i].Message.Nonce, nextNonce)
}
nextNonce++
}
nextNonce = 0
for i := 10; i < 20; i++ {
if msgs[i].Message.From != a2 {
t.Fatalf("expected message from actor a2")
}
if msgs[i].Message.Nonce != uint64(nextNonce) {
t.Fatalf("expected nonce %d, got %d", msgs[i].Message.Nonce, nextNonce)
}
nextNonce++
}
// now we make a block with all the messages and advance the chain
block2 := mock.MkBlock(ts, 2, 2)
tma.setBlockMessages(block2, msgs...)
tma.applyBlock(t, block2)
// we should have no pending messages in the mpool
pend, ts2 := mp.Pending()
if len(pend) != 0 {
t.Fatalf("expected no pending messages, but got %d", len(pend))
}
// create a block and advance the chain without applying to the mpool
msgs = nil
for i := 10; i < 20; i++ {
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(2*i+1))
msgs = append(msgs, m)
m = makeTestMessage(w2, a2, a1, uint64(i), gasLimit, uint64(i+1))
msgs = append(msgs, m)
}
block3 := mock.MkBlock(ts2, 3, 3)
tma.setBlockMessages(block3, msgs...)
ts3 := mock.TipSet(block3)
// now create another set of messages and add them to the mpool
for i := 20; i < 30; i++ {
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(2*i+1))
mustAdd(t, mp, m)
m = makeTestMessage(w2, a2, a1, uint64(i), gasLimit, uint64(i+1))
mustAdd(t, mp, m)
}
// select messages in the last tipset; this should include the missed messages as well as
// the last messages we added, with the first actor's messages first
// first we need to update the nonce on the tma
tma.setStateNonce(a1, 10)
tma.setStateNonce(a2, 10)
msgs, err = mp.SelectMessages(ts3, 1.0)
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if err != nil {
t.Fatal(err)
}
if len(msgs) != 40 {
t.Fatalf("expected 40 messages, got %d", len(msgs))
}
nextNonce = 10
for i := 0; i < 20; i++ {
if msgs[i].Message.From != a1 {
t.Fatalf("expected message from actor a1")
}
if msgs[i].Message.Nonce != uint64(nextNonce) {
t.Fatalf("expected nonce %d, got %d", msgs[i].Message.Nonce, nextNonce)
}
nextNonce++
}
nextNonce = 10
for i := 20; i < 40; i++ {
if msgs[i].Message.From != a2 {
t.Fatalf("expected message from actor a2")
}
if msgs[i].Message.Nonce != uint64(nextNonce) {
t.Fatalf("expected nonce %d, got %d", msgs[i].Message.Nonce, nextNonce)
}
nextNonce++
}
}
func TestMessageSelectionTrimming(t *testing.T) {
mp, tma := makeTestMpool()
// the actors
w1, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a1, err := w1.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
w2, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a2, err := w2.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
tma.applyBlock(t, block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
tma.setBalance(a1, 1) // in FIL
tma.setBalance(a2, 1) // in FIL
// make many small chains for the two actors
nMessages := int((build.BlockGasLimit / gasLimit) + 1)
for i := 0; i < nMessages; i++ {
bias := (nMessages - i) / 3
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(1+i%3+bias))
mustAdd(t, mp, m)
m = makeTestMessage(w2, a2, a1, uint64(i), gasLimit, uint64(1+i%3+bias))
mustAdd(t, mp, m)
}
msgs, err := mp.SelectMessages(ts, 1.0)
if err != nil {
t.Fatal(err)
}
expected := int(build.BlockGasLimit / gasLimit)
if len(msgs) != expected {
t.Fatalf("expected %d messages, bug got %d", expected, len(msgs))
}
mGasLimit := int64(0)
for _, m := range msgs {
mGasLimit += m.Message.GasLimit
}
if mGasLimit > build.BlockGasLimit {
t.Fatal("selected messages gas limit exceeds block gas limit!")
}
}
func TestPriorityMessageSelection(t *testing.T) {
mp, tma := makeTestMpool()
// the actors
w1, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a1, err := w1.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
w2, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a2, err := w2.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
tma.applyBlock(t, block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
tma.setBalance(a1, 1) // in FIL
tma.setBalance(a2, 1) // in FIL
mp.cfg.PriorityAddrs = []address.Address{a1}
nMessages := 10
for i := 0; i < nMessages; i++ {
bias := (nMessages - i) / 3
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(1+i%3+bias))
mustAdd(t, mp, m)
m = makeTestMessage(w2, a2, a1, uint64(i), gasLimit, uint64(1+i%3+bias))
mustAdd(t, mp, m)
}
msgs, err := mp.SelectMessages(ts, 1.0)
if err != nil {
t.Fatal(err)
}
if len(msgs) != 20 {
t.Fatalf("expected 20 messages but got %d", len(msgs))
}
// messages from a1 must be first
nextNonce := uint64(0)
for i := 0; i < 10; i++ {
m := msgs[i]
if m.Message.From != a1 {
t.Fatal("expected messages from a1 before messages from a2")
}
if m.Message.Nonce != nextNonce {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
nextNonce = 0
for i := 10; i < 20; i++ {
m := msgs[i]
if m.Message.From != a2 {
t.Fatal("expected messages from a2 after messages from a1")
}
if m.Message.Nonce != nextNonce {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
}
func TestOptimalMessageSelection1(t *testing.T) {
// this test uses just a single actor sending messages with a low tq
// the chain depenent merging algorithm should pick messages from the actor
// from the start
mp, tma := makeTestMpool()
// the actors
w1, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a1, err := w1.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
w2, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a2, err := w2.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
tma.applyBlock(t, block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
tma.setBalance(a1, 1) // in FIL
tma.setBalance(a2, 1) // in FIL
nMessages := int(10 * build.BlockGasLimit / gasLimit)
for i := 0; i < nMessages; i++ {
bias := (nMessages - i) / 3
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(1+i%3+bias))
mustAdd(t, mp, m)
}
msgs, err := mp.SelectMessages(ts, 0.25)
if err != nil {
t.Fatal(err)
}
expectedMsgs := int(build.BlockGasLimit / gasLimit)
if len(msgs) != expectedMsgs {
t.Fatalf("expected %d messages, but got %d", expectedMsgs, len(msgs))
}
nextNonce := uint64(0)
for _, m := range msgs {
if m.Message.From != a1 {
t.Fatal("expected message from a1")
}
if m.Message.Nonce != nextNonce {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
}
func TestOptimalMessageSelection2(t *testing.T) {
// this test uses two actors sending messages to each other, with the first
// actor paying (much) higher gas premium than the second.
// We select with a low ticket quality; the chain depenent merging algorithm should pick
// messages from the second actor from the start
mp, tma := makeTestMpool()
// the actors
w1, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a1, err := w1.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
w2, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a2, err := w2.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
tma.applyBlock(t, block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
tma.setBalance(a1, 1) // in FIL
tma.setBalance(a2, 1) // in FIL
nMessages := int(5 * build.BlockGasLimit / gasLimit)
for i := 0; i < nMessages; i++ {
bias := (nMessages - i) / 3
m := makeTestMessage(w1, a1, a2, uint64(i), gasLimit, uint64(10000+i%3+bias))
mustAdd(t, mp, m)
m = makeTestMessage(w2, a2, a1, uint64(i), gasLimit, uint64(1+i%3+bias))
mustAdd(t, mp, m)
}
msgs, err := mp.SelectMessages(ts, 0.1)
if err != nil {
t.Fatal(err)
}
expectedMsgs := int(build.BlockGasLimit / gasLimit)
if len(msgs) != expectedMsgs {
t.Fatalf("expected %d messages, but got %d", expectedMsgs, len(msgs))
}
nextNonce := uint64(0)
for _, m := range msgs {
if m.Message.From != a2 {
t.Fatal("expected message from a2")
}
if m.Message.Nonce != nextNonce {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
}
func TestOptimalMessageSelection3(t *testing.T) {
// this test uses 10 actors sending a block of messages to each other, with the the first
// actors paying higher gas premium than the subsequent actors.
// We select with a low ticket quality; the chain depenent merging algorithm should pick
// messages from the median actor from the start
mp, tma := makeTestMpool()
nActors := 10
// the actors
var actors []address.Address
var wallets []*wallet.Wallet
for i := 0; i < nActors; i++ {
w, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a, err := w.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
actors = append(actors, a)
wallets = append(wallets, w)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
tma.applyBlock(t, block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
for _, a := range actors {
tma.setBalance(a, 1) // in FIL
}
nMessages := int(build.BlockGasLimit/gasLimit) + 1
for i := 0; i < nMessages; i++ {
for j := 0; j < nActors; j++ {
bias := (nActors-j)*nMessages + (nMessages+2-i)/(3*nActors) + i%3
m := makeTestMessage(wallets[j], actors[j], actors[j%nActors], uint64(i), gasLimit, uint64(1+bias))
mustAdd(t, mp, m)
}
}
msgs, err := mp.SelectMessages(ts, 0.1)
if err != nil {
t.Fatal(err)
}
expectedMsgs := int(build.BlockGasLimit / gasLimit)
if len(msgs) != expectedMsgs {
t.Fatalf("expected %d messages, but got %d", expectedMsgs, len(msgs))
}
nextNonce := uint64(0)
a := actors[len(actors)/2-1]
for _, m := range msgs {
if m.Message.From != a {
who := 0
for i, a := range actors {
if a == m.Message.From {
who = i
break
}
}
t.Fatalf("expected message from last actor, but got from %d instead", who)
}
if m.Message.Nonce != nextNonce {
t.Fatalf("expected nonce %d but got %d", nextNonce, m.Message.Nonce)
}
nextNonce++
}
}
func testCompetitiveMessageSelection(t *testing.T, rng *rand.Rand) {
// in this test we use 100 actors and send 10 blocks of messages.
// actors send with an exponentially decreasing premium.
// a number of miners select with varying ticket quality and we compare the
// capacity and rewards of greedy selection -vs- optimal selection
mp, tma := makeTestMpool()
nActors := 300
// the actors
var actors []address.Address
var wallets []*wallet.Wallet
for i := 0; i < nActors; i++ {
w, err := wallet.NewWallet(wallet.NewMemKeyStore())
if err != nil {
t.Fatal(err)
}
a, err := w.GenerateKey(crypto.SigTypeSecp256k1)
if err != nil {
t.Fatal(err)
}
actors = append(actors, a)
wallets = append(wallets, w)
}
block := mock.MkBlock(nil, 1, 1)
ts := mock.TipSet(block)
tma.applyBlock(t, block)
gasLimit := gasguess.Costs[gasguess.CostKey{builtin.StorageMarketActorCodeID, 2}]
baseFee := types.NewInt(0)
for _, a := range actors {
tma.setBalance(a, 1) // in FIL
}
nMessages := 10 * int(build.BlockGasLimit/gasLimit)
t.Log("nMessages", nMessages)
nonces := make([]uint64, nActors)
for i := 0; i < nMessages; i++ {
from := rng.Intn(nActors)
to := rng.Intn(nActors)
premium := 20000*math.Exp(-3.*rand.Float64()) + 5000
nonce := nonces[from]
nonces[from]++
m := makeTestMessage(wallets[from], actors[from], actors[to], uint64(nonce), gasLimit, uint64(premium))
mustAdd(t, mp, m)
}
// 1. greedy selection
greedyMsgs, err := mp.selectMessagesGreedy(ts, ts)
if err != nil {
t.Fatal(err)
}
// 2. optimal selection
minersRand := rng.Float64()
winerProba := noWinnersProb()
i := 0
for ; i < MaxBlocks && minersRand > 0; i++ {
minersRand -= winerProba[i]
}
nMiners := i
if nMiners == 0 {
nMiners = 1
}
logging.SetLogLevel("messagepool", "error")
for i := 0; i < 1; i++ {
optMsgs := make(map[cid.Cid]*types.SignedMessage)
for j := 0; j < nMiners; j++ {
tq := rng.Float64()
msgs, err := mp.SelectMessages(ts, tq)
if err != nil {
t.Fatal(err)
}
for _, m := range msgs {
optMsgs[m.Cid()] = m
}
}
t.Logf("nMiners: %d", nMiners)
t.Logf("greedy capacity %d, optimal capacity %d (x%.1f)", len(greedyMsgs),
len(optMsgs), float64(len(optMsgs))/float64(len(greedyMsgs)))
if len(greedyMsgs) > len(optMsgs) {
t.Fatal("greedy capacity higher than optimal capacity; wtf")
}
greedyReward := big.NewInt(0)
for _, m := range greedyMsgs {
greedyReward.Add(greedyReward, mp.getGasReward(m, baseFee, ts))
}
optReward := big.NewInt(0)
for _, m := range optMsgs {
optReward.Add(optReward, mp.getGasReward(m, baseFee, ts))
}
nMinersBig := big.NewInt(int64(nMiners))
greedyAvgReward, _ := new(big.Rat).SetFrac(greedyReward, nMinersBig).Float64()
optimalAvgReward, _ := new(big.Rat).SetFrac(optReward, nMinersBig).Float64()
t.Logf("greedy reward: %.0f, optimal reward: %.0f (x%.1f)", greedyAvgReward,
optimalAvgReward, optimalAvgReward/greedyAvgReward)
if greedyReward.Cmp(optReward) > 0 {
t.Fatal("greedy reward raw higher than optimal reward; booh")
}
}
logging.SetLogLevel("messagepool", "info")
}
func TestCompetitiveMessageSelection(t *testing.T) {
seeds := []int64{1947, 1976, 2020, 2100, 10000}
for _, seed := range seeds {
t.Log("running competitve message selection with seed", seed)
testCompetitiveMessageSelection(t, rand.New(rand.NewSource(seed)))
}
}