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package derive
import (
"context"
"io"
"math/rand"
"testing"
"github.com/ethereum-optimism/optimism/op-node/eth"
"github.com/ethereum-optimism/optimism/op-node/rollup"
"github.com/ethereum-optimism/optimism/op-node/testlog"
"github.com/ethereum-optimism/optimism/op-node/testutils"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/log"
"github.com/stretchr/testify/require"
)
// fakeBatchQueueOutput fakes the next stage (receive only) for the batch queue
// It tracks the progress state of the next stage.
// Upon receiving a batch, relevant characteristic of safeL2Head are immediately advanced.
type fakeBatchQueueOutput struct {
progress Progress
batches []*BatchData
safeL2Head eth.L2BlockRef
}
var _ BatchQueueOutput = (*fakeBatchQueueOutput)(nil)
func (f *fakeBatchQueueOutput) AddBatch(batch *BatchData) {
f.batches = append(f.batches, batch)
// Advance SafeL2Head
f.safeL2Head.Time = batch.Timestamp
f.safeL2Head.L1Origin.Number = uint64(batch.EpochNum)
}
func (f *fakeBatchQueueOutput) SafeL2Head() eth.L2BlockRef {
return f.safeL2Head
}
func (f *fakeBatchQueueOutput) Progress() Progress {
return f.progress
}
func b(timestamp uint64, epoch eth.L1BlockRef) *BatchData {
rng := rand.New(rand.NewSource(int64(timestamp)))
data := testutils.RandomData(rng, 20)
return &BatchData{BatchV1{
Timestamp: timestamp,
EpochNum: rollup.Epoch(epoch.Number),
EpochHash: epoch.Hash,
Transactions: []hexutil.Bytes{data},
}}
}
func L1Chain(l1Times []uint64) []eth.L1BlockRef {
var out []eth.L1BlockRef
var parentHash [32]byte
for i, time := range l1Times {
hash := [32]byte{byte(i)}
out = append(out, eth.L1BlockRef{
Hash: hash,
Number: uint64(i),
ParentHash: parentHash,
Time: time,
})
parentHash = hash
}
return out
}
type fakeL1Fetcher struct {
l1 []eth.L1BlockRef
}
func (f *fakeL1Fetcher) L1BlockRefByNumber(_ context.Context, n uint64) (eth.L1BlockRef, error) {
if n >= uint64(len(f.l1)) {
return eth.L1BlockRef{}, ethereum.NotFound
}
return f.l1[int(n)], nil
}
func TestBatchQueueEager(t *testing.T) {
log := testlog.Logger(t, log.LvlTrace)
next := &fakeBatchQueueOutput{
safeL2Head: eth.L2BlockRef{
Number: 0,
Time: 10,
L1Origin: eth.BlockID{Number: 0},
},
}
cfg := &rollup.Config{
Genesis: rollup.Genesis{
L2Time: 10,
},
BlockTime: 2,
MaxSequencerDrift: 600,
SeqWindowSize: 30,
}
l1 := L1Chain([]uint64{10, 20, 30})
fetcher := fakeL1Fetcher{l1: l1}
bq := NewBatchQueue(log, cfg, &fetcher, next)
prevProgress := Progress{
Origin: l1[0],
Closed: false,
}
// Setup progress
bq.progress.Closed = true
err := bq.Step(context.Background(), prevProgress)
require.Nil(t, err)
// Add batches
batches := []*BatchData{b(12, l1[0]), b(14, l1[0])}
for _, batch := range batches {
err := bq.AddBatch(batch)
require.Nil(t, err)
}
// Step
for {
if err := bq.Step(context.Background(), prevProgress); err == io.EOF {
break
} else {
require.Nil(t, err)
}
}
// Verify Output
require.Equal(t, batches, next.batches)
}
func TestBatchQueueFull(t *testing.T) {
log := testlog.Logger(t, log.LvlTrace)
next := &fakeBatchQueueOutput{
safeL2Head: eth.L2BlockRef{
Number: 0,
Time: 10,
L1Origin: eth.BlockID{Number: 0},
},
}
cfg := &rollup.Config{
Genesis: rollup.Genesis{
L2Time: 10,
},
BlockTime: 2,
MaxSequencerDrift: 600,
SeqWindowSize: 2,
}
l1 := L1Chain([]uint64{10, 15, 20})
fetcher := fakeL1Fetcher{l1: l1}
bq := NewBatchQueue(log, cfg, &fetcher, next)
// Start with open previous & closed self.
// Then this stage is opened at the first step.
bq.progress.Closed = true
prevProgress := Progress{
Origin: l1[0],
Closed: false,
}
// Do the bq open
err := bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, false)
// Add batches
batches := []*BatchData{b(14, l1[0]), b(16, l1[0]), b(18, l1[1])}
for _, batch := range batches {
err := bq.AddBatch(batch)
require.Nil(t, err)
}
// Missing first batch
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, io.EOF)
// Close previous to close bq
prevProgress.Closed = true
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, true)
// Open previous to open bq with the new inclusion block
prevProgress.Closed = false
prevProgress.Origin = l1[1]
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, false)
// Close previous to close bq (for epoch 2)
prevProgress.Closed = true
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, true)
// Open previous to open bq with the new inclusion block (epoch 2)
prevProgress.Closed = false
prevProgress.Origin = l1[2]
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, false)
// Finally add batch
firstBatch := b(12, l1[0])
err = bq.AddBatch(firstBatch)
require.Equal(t, err, nil)
// Close the origin
prevProgress.Closed = true
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, true)
// Step, but should have full epoch now
for {
if err := bq.Step(context.Background(), prevProgress); err == io.EOF {
break
} else {
require.Nil(t, err)
}
}
// Verify Output
var final []*BatchData
final = append(final, firstBatch)
final = append(final, batches...)
require.Equal(t, final, next.batches)
}
func TestBatchQueueMissing(t *testing.T) {
log := testlog.Logger(t, log.LvlTrace)
next := &fakeBatchQueueOutput{
safeL2Head: eth.L2BlockRef{
Number: 0,
Time: 10,
L1Origin: eth.BlockID{Number: 0},
},
}
cfg := &rollup.Config{
Genesis: rollup.Genesis{
L2Time: 10,
},
BlockTime: 2,
MaxSequencerDrift: 600,
SeqWindowSize: 2,
}
l1 := L1Chain([]uint64{10, 15, 20})
fetcher := fakeL1Fetcher{l1: l1}
bq := NewBatchQueue(log, cfg, &fetcher, next)
// Start with open previous & closed self.
// Then this stage is opened at the first step.
bq.progress.Closed = true
prevProgress := Progress{
Origin: l1[0],
Closed: false,
}
// Do the bq open
err := bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, false)
// Add batches
// NB: The batch at 18 is skipped to skip over the ability to
// do eager batch processing for that batch. This test checks
// that batch timestamp 12 & 14 is created & 16 is used.
batches := []*BatchData{b(16, l1[0]), b(20, l1[1])}
for _, batch := range batches {
err := bq.AddBatch(batch)
require.Nil(t, err)
}
// Missing first batch
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, io.EOF)
// Close previous to close bq
prevProgress.Closed = true
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, true)
// Open previous to open bq with the new inclusion block
prevProgress.Closed = false
prevProgress.Origin = l1[1]
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, false)
// Close previous to close bq (for epoch 2)
prevProgress.Closed = true
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, true)
// Open previous to open bq with the new inclusion block (epoch 2)
prevProgress.Closed = false
prevProgress.Origin = l1[2]
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, false)
// Close the origin
prevProgress.Closed = true
err = bq.Step(context.Background(), prevProgress)
require.Equal(t, err, nil)
require.Equal(t, bq.progress.Closed, true)
// Step, but should have full epoch now + fill missing
for {
if err := bq.Step(context.Background(), prevProgress); err == io.EOF {
break
} else {
require.Nil(t, err)
}
}
// TODO: Maybe check actuall batch validity better
require.Equal(t, 3, len(next.batches))
}