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package prefetcher
import (
"context"
"crypto/sha256"
"encoding/binary"
"fmt"
"math/rand"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
"github.com/stretchr/testify/require"
preimage "github.com/ethereum-optimism/optimism/op-preimage"
"github.com/ethereum-optimism/optimism/op-program/client/l1"
"github.com/ethereum-optimism/optimism/op-program/client/l2"
"github.com/ethereum-optimism/optimism/op-program/client/mpt"
"github.com/ethereum-optimism/optimism/op-program/host/kvstore"
"github.com/ethereum-optimism/optimism/op-service/eth"
"github.com/ethereum-optimism/optimism/op-service/testlog"
"github.com/ethereum-optimism/optimism/op-service/testutils"
)
var (
ecRecoverInput = common.FromHex("18c547e4f7b0f325ad1e56f57e26c745b09a3e503d86e00e5255ff7f715d3d1c000000000000000000000000000000000000000000000000000000000000001c73b1693892219d736caba55bdb67216e485557ea6b6af75f37096c9aa6a5a75feeb940b1d03b21e36b0e47e79769f095fe2ab855bd91e3a38756b7d75a9c4549")
kzgPointEvalInput = common.FromHex("01e798154708fe7789429634053cbf9f99b619f9f084048927333fce637f549b564c0a11a0f704f4fc3e8acfe0f8245f0ad1347b378fbf96e206da11a5d3630624d25032e67a7e6a4910df5834b8fe70e6bcfeeac0352434196bdf4b2485d5a18f59a8d2a1a625a17f3fea0fe5eb8c896db3764f3185481bc22f91b4aaffcca25f26936857bc3a7c2539ea8ec3a952b7873033e038326e87ed3e1276fd140253fa08e9fc25fb2d9a98527fc22a2c9612fbeafdad446cbc7bcdbdcd780af2c16a")
)
func TestNoHint(t *testing.T) {
t.Run("NotFound", func(t *testing.T) {
prefetcher, _, _, _, _ := createPrefetcher(t)
res, err := prefetcher.GetPreimage(context.Background(), common.Hash{0xab})
require.ErrorIs(t, err, kvstore.ErrNotFound)
require.Nil(t, res)
})
t.Run("Exists", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
data := []byte{1, 2, 3}
hash := crypto.Keccak256Hash(data)
require.NoError(t, kv.Put(hash, data))
res, err := prefetcher.GetPreimage(context.Background(), hash)
require.NoError(t, err)
require.Equal(t, res, data)
})
}
func TestFetchL1BlockHeader(t *testing.T) {
rng := rand.New(rand.NewSource(123))
block, rcpts := testutils.RandomBlock(rng, 2)
hash := block.Hash()
key := preimage.Keccak256Key(hash).PreimageKey()
pre, err := rlp.EncodeToBytes(block.Header())
require.NoError(t, err)
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
storeBlock(t, kv, block, rcpts)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.HeaderByBlockHash(hash)
require.Equal(t, eth.HeaderBlockInfo(block.Header()), result)
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, l1Cl, _, _, _ := createPrefetcher(t)
l1Cl.ExpectInfoByHash(hash, eth.HeaderBlockInfo(block.Header()), nil)
defer l1Cl.AssertExpectations(t)
require.NoError(t, prefetcher.Hint(l1.BlockHeaderHint(hash).Hint()))
result, err := prefetcher.GetPreimage(context.Background(), key)
require.NoError(t, err)
require.Equal(t, pre, result)
})
}
func TestFetchL1Transactions(t *testing.T) {
rng := rand.New(rand.NewSource(123))
block, rcpts := testutils.RandomBlock(rng, 10)
hash := block.Hash()
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
storeBlock(t, kv, block, rcpts)
// Check the data is available (note the oracle does not know about the block, only the kvstore does)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
header, txs := oracle.TransactionsByBlockHash(hash)
require.EqualValues(t, hash, header.Hash())
assertTransactionsEqual(t, block.Transactions(), txs)
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, l1Cl, _, _, _ := createPrefetcher(t)
l1Cl.ExpectInfoByHash(hash, eth.BlockToInfo(block), nil)
l1Cl.ExpectInfoAndTxsByHash(hash, eth.BlockToInfo(block), block.Transactions(), nil)
defer l1Cl.AssertExpectations(t)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
header, txs := oracle.TransactionsByBlockHash(hash)
require.EqualValues(t, hash, header.Hash())
assertTransactionsEqual(t, block.Transactions(), txs)
})
}
func TestFetchL1Receipts(t *testing.T) {
rng := rand.New(rand.NewSource(123))
block, receipts := testutils.RandomBlock(rng, 10)
hash := block.Hash()
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
storeBlock(t, kv, block, receipts)
// Check the data is available (note the oracle does not know about the block, only the kvstore does)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
header, actualReceipts := oracle.ReceiptsByBlockHash(hash)
require.EqualValues(t, hash, header.Hash())
assertReceiptsEqual(t, receipts, actualReceipts)
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, l1Cl, _, _, _ := createPrefetcher(t)
l1Cl.ExpectInfoByHash(hash, eth.BlockToInfo(block), nil)
l1Cl.ExpectInfoAndTxsByHash(hash, eth.BlockToInfo(block), block.Transactions(), nil)
l1Cl.ExpectFetchReceipts(hash, eth.BlockToInfo(block), receipts, nil)
defer l1Cl.AssertExpectations(t)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
header, actualReceipts := oracle.ReceiptsByBlockHash(hash)
require.EqualValues(t, hash, header.Hash())
assertReceiptsEqual(t, receipts, actualReceipts)
})
// Blocks may have identical RLP receipts for different transactions.
// Check that the node already existing is handled
t.Run("CommonTrieNodes", func(t *testing.T) {
prefetcher, l1Cl, _, _, kv := createPrefetcher(t)
l1Cl.ExpectInfoByHash(hash, eth.BlockToInfo(block), nil)
l1Cl.ExpectInfoAndTxsByHash(hash, eth.BlockToInfo(block), block.Transactions(), nil)
l1Cl.ExpectFetchReceipts(hash, eth.BlockToInfo(block), receipts, nil)
defer l1Cl.AssertExpectations(t)
// Pre-store one receipt node (but not the whole trie leading to it)
// This would happen if an identical receipt was in an earlier block
opaqueRcpts, err := eth.EncodeReceipts(receipts)
require.NoError(t, err)
_, nodes := mpt.WriteTrie(opaqueRcpts)
require.NoError(t, kv.Put(preimage.Keccak256Key(crypto.Keccak256Hash(nodes[0])).PreimageKey(), nodes[0]))
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
header, actualReceipts := oracle.ReceiptsByBlockHash(hash)
require.EqualValues(t, hash, header.Hash())
assertReceiptsEqual(t, receipts, actualReceipts)
})
}
func GetRandBlob(t *testing.T, seed int64) eth.Blob {
r := rand.New(rand.NewSource(seed))
bigData := eth.Data(make([]byte, eth.MaxBlobDataSize))
for i := range bigData {
bigData[i] = byte(r.Intn(256))
}
var b eth.Blob
err := b.FromData(bigData)
require.NoError(t, err)
return b
}
func TestFetchL1Blob(t *testing.T) {
blob := GetRandBlob(t, 0xf00f00)
commitment, err := blob.ComputeKZGCommitment()
require.NoError(t, err)
versionedHash := eth.KZGToVersionedHash(commitment)
blobHash := eth.IndexedBlobHash{Hash: versionedHash, Index: 0xFACADE}
l1Ref := eth.L1BlockRef{Time: 0}
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, blobFetcher, _, kv := createPrefetcher(t)
storeBlob(t, kv, (eth.Bytes48)(commitment), &blob)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
defer blobFetcher.AssertExpectations(t)
blobs := oracle.GetBlob(l1Ref, blobHash)
require.EqualValues(t, blobs[:], blob[:])
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, _, blobFetcher, _, _ := createPrefetcher(t)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
blobFetcher.ExpectOnGetBlobSidecars(
context.Background(),
l1Ref,
[]eth.IndexedBlobHash{blobHash},
(eth.Bytes48)(commitment),
[]*eth.Blob{&blob},
nil,
)
defer blobFetcher.AssertExpectations(t)
blobs := oracle.GetBlob(l1Ref, blobHash)
require.EqualValues(t, blobs[:], blob[:])
// Check that the preimages of field element keys are also stored
// This makes it possible for the challenger to extract the commitment and required field from the
// oracle key rather than needing the hint data.
fieldElemKey := make([]byte, 80)
copy(fieldElemKey[:48], commitment[:])
for i := 0; i < params.BlobTxFieldElementsPerBlob; i++ {
binary.BigEndian.PutUint64(fieldElemKey[72:], uint64(i))
key := preimage.Keccak256Key(crypto.Keccak256(fieldElemKey)).PreimageKey()
actual, err := prefetcher.kvStore.Get(key)
require.NoError(t, err)
require.Equal(t, fieldElemKey, actual)
}
})
}
func TestFetchPrecompileResult(t *testing.T) {
failure := []byte{0}
success := []byte{1}
tests := []struct {
name string
addr common.Address
input []byte
result []byte
}{
{
name: "EcRecover-Valid",
addr: common.BytesToAddress([]byte{0x1}),
input: ecRecoverInput,
result: append(success, common.FromHex("000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b")...),
},
{
name: "KzgPointEvaluation-Valid",
addr: common.BytesToAddress([]byte{0xa}),
input: kzgPointEvalInput,
result: append(success, common.FromHex("000000000000000000000000000000000000000000000000000000000000100073eda753299d7d483339d80809a1d80553bda402fffe5bfeffffffff00000001")...),
},
{
name: "KzgPointEvaluation-Invalid",
addr: common.BytesToAddress([]byte{0xa}),
input: []byte{0x0},
result: failure,
},
{
name: "Bn256Pairing-Valid",
addr: common.BytesToAddress([]byte{0x8}),
input: []byte{}, // empty is valid
result: append(success, common.FromHex("0000000000000000000000000000000000000000000000000000000000000001")...),
},
{
name: "Bn256Pairing-Invalid",
addr: common.BytesToAddress([]byte{0x8}),
input: []byte{0x1},
result: failure,
},
}
for _, test := range tests {
test := test
t.Run(test.name, func(t *testing.T) {
prefetcher, _, _, _, _ := createPrefetcher(t)
oracle := newLegacyPrecompileOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result, ok := oracle.Precompile(test.addr, test.input)
require.Equal(t, test.result[0] == 1, ok)
require.EqualValues(t, test.result[1:], result)
key := crypto.Keccak256Hash(append(test.addr.Bytes(), test.input...))
val, err := prefetcher.kvStore.Get(preimage.Keccak256Key(key).PreimageKey())
require.NoError(t, err)
require.NotEmpty(t, val)
val, err = prefetcher.kvStore.Get(preimage.PrecompileKey(key).PreimageKey())
require.NoError(t, err)
require.EqualValues(t, test.result, val)
})
}
t.Run("Already Known", func(t *testing.T) {
input := []byte("test input")
addr := common.BytesToAddress([]byte{0x1})
result := []byte{0x1}
prefetcher, _, _, _, kv := createPrefetcher(t)
err := kv.Put(preimage.PrecompileKey(crypto.Keccak256Hash(append(addr.Bytes(), input...))).PreimageKey(), append([]byte{1}, result...))
require.NoError(t, err)
oracle := newLegacyPrecompileOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
actualResult, status := oracle.Precompile(addr, input)
require.EqualValues(t, result, actualResult)
require.True(t, status)
})
}
func TestFetchPrecompileResultV2(t *testing.T) {
failure := []byte{0}
success := []byte{1}
tests := []struct {
name string
addr common.Address
input []byte
requiredGas uint64
result []byte
}{
{
name: "EcRecover-Valid",
addr: common.BytesToAddress([]byte{0x1}),
input: ecRecoverInput,
requiredGas: 3000,
result: append(success, common.FromHex("000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b")...),
},
{
name: "Bn256Pairing-Valid",
addr: common.BytesToAddress([]byte{0x8}),
input: []byte{}, // empty is valid
requiredGas: 6000,
result: append(success, common.FromHex("0000000000000000000000000000000000000000000000000000000000000001")...),
},
{
name: "Bn256Pairing-Invalid",
addr: common.BytesToAddress([]byte{0x8}),
input: []byte{0x1},
requiredGas: 6000,
result: failure,
},
{
name: "KzgPointEvaluation-Valid",
addr: common.BytesToAddress([]byte{0xa}),
input: kzgPointEvalInput,
requiredGas: 50_000,
result: append(success, common.FromHex("000000000000000000000000000000000000000000000000000000000000100073eda753299d7d483339d80809a1d80553bda402fffe5bfeffffffff00000001")...),
},
{
name: "KzgPointEvaluation-Invalid",
addr: common.BytesToAddress([]byte{0xa}),
input: []byte{0x0},
requiredGas: 50_000,
result: failure,
},
}
for _, test := range tests {
test := test
t.Run(test.name, func(t *testing.T) {
prefetcher, _, _, _, _ := createPrefetcher(t)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result, ok := oracle.Precompile(test.addr, test.input, test.requiredGas)
require.Equal(t, test.result[0] == 1, ok)
require.EqualValues(t, test.result[1:], result)
key := crypto.Keccak256Hash(append(append(test.addr.Bytes(), binary.BigEndian.AppendUint64(nil, test.requiredGas)...), test.input...))
val, err := prefetcher.kvStore.Get(preimage.Keccak256Key(key).PreimageKey())
require.NoError(t, err)
require.NotEmpty(t, val)
val, err = prefetcher.kvStore.Get(preimage.PrecompileKey(key).PreimageKey())
require.NoError(t, err)
require.EqualValues(t, test.result, val)
})
}
t.Run("Already Known", func(t *testing.T) {
input := []byte("test input")
requiredGas := uint64(3000)
addr := common.BytesToAddress([]byte{0x1})
result := []byte{0x1}
prefetcher, _, _, _, kv := createPrefetcher(t)
keyArg := append(addr.Bytes(), binary.BigEndian.AppendUint64(nil, requiredGas)...)
keyArg = append(keyArg, input...)
err := kv.Put(preimage.PrecompileKey(crypto.Keccak256Hash(keyArg)).PreimageKey(), append([]byte{1}, result...))
require.NoError(t, err)
oracle := l1.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
actualResult, status := oracle.Precompile(addr, input, requiredGas)
require.EqualValues(t, actualResult, result)
require.True(t, status)
})
}
func TestUnsupportedPrecompile(t *testing.T) {
prefetcher, _, _, _, _ := createPrefetcher(t)
oracleFn := func(t *testing.T, prefetcher *Prefetcher) preimage.OracleFn {
return func(key preimage.Key) []byte {
_, err := prefetcher.GetPreimage(context.Background(), key.PreimageKey())
require.ErrorContains(t, err, "unsupported precompile address")
return []byte{1}
}
}
oracle := newLegacyPrecompileOracle(oracleFn(t, prefetcher), asHinter(t, prefetcher))
oracle.Precompile(common.HexToAddress("0xdead"), nil)
}
func TestRestrictedPrecompileContracts(t *testing.T) {
for _, addr := range acceleratedPrecompiles {
require.NotNil(t, getPrecompiledContract(addr))
}
}
func TestFetchL2Block(t *testing.T) {
rng := rand.New(rand.NewSource(123))
block, rcpts := testutils.RandomBlock(rng, 10)
hash := block.Hash()
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
storeBlock(t, kv, block, rcpts)
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.BlockByHash(hash)
require.EqualValues(t, block.Header(), result.Header())
assertTransactionsEqual(t, block.Transactions(), result.Transactions())
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, _, _, l2Cl, _ := createPrefetcher(t)
l2Cl.ExpectInfoAndTxsByHash(hash, eth.BlockToInfo(block), block.Transactions(), nil)
defer l2Cl.MockL2Client.AssertExpectations(t)
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.BlockByHash(hash)
require.EqualValues(t, block.Header(), result.Header())
assertTransactionsEqual(t, block.Transactions(), result.Transactions())
})
}
func TestFetchL2Transactions(t *testing.T) {
rng := rand.New(rand.NewSource(123))
block, rcpts := testutils.RandomBlock(rng, 10)
hash := block.Hash()
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
storeBlock(t, kv, block, rcpts)
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.LoadTransactions(hash, block.TxHash())
assertTransactionsEqual(t, block.Transactions(), result)
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, _, _, l2Cl, _ := createPrefetcher(t)
l2Cl.ExpectInfoAndTxsByHash(hash, eth.BlockToInfo(block), block.Transactions(), nil)
defer l2Cl.MockL2Client.AssertExpectations(t)
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.LoadTransactions(hash, block.TxHash())
assertTransactionsEqual(t, block.Transactions(), result)
})
}
func TestFetchL2Node(t *testing.T) {
rng := rand.New(rand.NewSource(123))
node := testutils.RandomData(rng, 30)
hash := crypto.Keccak256Hash(node)
key := preimage.Keccak256Key(hash).PreimageKey()
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
require.NoError(t, kv.Put(key, node))
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.NodeByHash(hash)
require.EqualValues(t, node, result)
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, _, _, l2Cl, _ := createPrefetcher(t)
l2Cl.ExpectNodeByHash(hash, node, nil)
defer l2Cl.MockDebugClient.AssertExpectations(t)
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.NodeByHash(hash)
require.EqualValues(t, node, result)
})
}
func TestFetchL2Code(t *testing.T) {
rng := rand.New(rand.NewSource(123))
code := testutils.RandomData(rng, 30)
hash := crypto.Keccak256Hash(code)
key := preimage.Keccak256Key(hash).PreimageKey()
t.Run("AlreadyKnown", func(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
require.NoError(t, kv.Put(key, code))
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.CodeByHash(hash)
require.EqualValues(t, code, result)
})
t.Run("Unknown", func(t *testing.T) {
prefetcher, _, _, l2Cl, _ := createPrefetcher(t)
l2Cl.ExpectCodeByHash(hash, code, nil)
defer l2Cl.MockDebugClient.AssertExpectations(t)
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.CodeByHash(hash)
require.EqualValues(t, code, result)
})
}
func TestBadHints(t *testing.T) {
prefetcher, _, _, _, kv := createPrefetcher(t)
hash := common.Hash{0xad}
t.Run("NoSpace", func(t *testing.T) {
// Accept the hint
require.NoError(t, prefetcher.Hint(l1.HintL1BlockHeader))
// But it will fail to prefetch when the pre-image isn't available
pre, err := prefetcher.GetPreimage(context.Background(), hash)
require.ErrorContains(t, err, "unsupported hint")
require.Nil(t, pre)
})
t.Run("InvalidHash", func(t *testing.T) {
// Accept the hint
require.NoError(t, prefetcher.Hint(l1.HintL1BlockHeader+" asdfsadf"))
// But it will fail to prefetch when the pre-image isn't available
pre, err := prefetcher.GetPreimage(context.Background(), hash)
require.ErrorContains(t, err, "invalid bytes")
require.Nil(t, pre)
})
t.Run("UnknownType", func(t *testing.T) {
// Accept the hint
require.NoError(t, prefetcher.Hint("unknown "+hash.Hex()))
// But it will fail to prefetch when the pre-image isn't available
pre, err := prefetcher.GetPreimage(context.Background(), hash)
require.ErrorContains(t, err, "unknown hint type")
require.Nil(t, pre)
})
// Should not return hint errors if the preimage is already available
t.Run("KeyExists", func(t *testing.T) {
// Prepopulate the requested preimage
value := []byte{1, 2, 3, 4}
require.NoError(t, kv.Put(hash, value))
// Hint is invalid
require.NoError(t, prefetcher.Hint("asdfsadf"))
// But fetching the key fails because prefetching isn't required
pre, err := prefetcher.GetPreimage(context.Background(), hash)
require.NoError(t, err)
require.Equal(t, value, pre)
})
}
func TestRetryWhenNotAvailableAfterPrefetching(t *testing.T) {
rng := rand.New(rand.NewSource(123))
node := testutils.RandomData(rng, 30)
hash := crypto.Keccak256Hash(node)
_, l1Source, l1BlobSource, l2Cl, kv := createPrefetcher(t)
putsToIgnore := 2
kv = &unreliableKvStore{KV: kv, putsToIgnore: putsToIgnore}
prefetcher := NewPrefetcher(testlog.Logger(t, log.LevelInfo), l1Source, l1BlobSource, l2Cl, kv)
// Expect one call for each ignored put, plus one more request for when the put succeeds
for i := 0; i < putsToIgnore+1; i++ {
l2Cl.ExpectNodeByHash(hash, node, nil)
}
defer l2Cl.MockDebugClient.AssertExpectations(t)
oracle := l2.NewPreimageOracle(asOracleFn(t, prefetcher), asHinter(t, prefetcher))
result := oracle.NodeByHash(hash)
require.EqualValues(t, node, result)
}
type unreliableKvStore struct {
kvstore.KV
putsToIgnore int
}
func (s *unreliableKvStore) Put(k common.Hash, v []byte) error {
if s.putsToIgnore > 0 {
s.putsToIgnore--
return nil
}
println("storing")
return s.KV.Put(k, v)
}
type l2Client struct {
*testutils.MockL2Client
*testutils.MockDebugClient
}
func (m *l2Client) OutputByRoot(ctx context.Context, root common.Hash) (eth.Output, error) {
out := m.Mock.MethodCalled("OutputByRoot", root)
return out[0].(eth.Output), *out[1].(*error)
}
func (m *l2Client) ExpectOutputByRoot(root common.Hash, output eth.Output, err error) {
m.Mock.On("OutputByRoot", root).Once().Return(output, &err)
}
func createPrefetcher(t *testing.T) (*Prefetcher, *testutils.MockL1Source, *testutils.MockBlobsFetcher, *l2Client, kvstore.KV) {
logger := testlog.Logger(t, log.LevelDebug)
kv := kvstore.NewMemKV()
l1Source := new(testutils.MockL1Source)
l1BlobSource := new(testutils.MockBlobsFetcher)
l2Source := &l2Client{
MockL2Client: new(testutils.MockL2Client),
MockDebugClient: new(testutils.MockDebugClient),
}
prefetcher := NewPrefetcher(logger, l1Source, l1BlobSource, l2Source, kv)
return prefetcher, l1Source, l1BlobSource, l2Source, kv
}
func storeBlock(t *testing.T, kv kvstore.KV, block *types.Block, receipts types.Receipts) {
// Pre-store receipts
opaqueRcpts, err := eth.EncodeReceipts(receipts)
require.NoError(t, err)
_, nodes := mpt.WriteTrie(opaqueRcpts)
for _, p := range nodes {
require.NoError(t, kv.Put(preimage.Keccak256Key(crypto.Keccak256Hash(p)).PreimageKey(), p))
}
// Pre-store transactions
opaqueTxs, err := eth.EncodeTransactions(block.Transactions())
require.NoError(t, err)
_, txsNodes := mpt.WriteTrie(opaqueTxs)
for _, p := range txsNodes {
require.NoError(t, kv.Put(preimage.Keccak256Key(crypto.Keccak256Hash(p)).PreimageKey(), p))
}
// Pre-store block
headerRlp, err := rlp.EncodeToBytes(block.Header())
require.NoError(t, err)
require.NoError(t, kv.Put(preimage.Keccak256Key(block.Hash()).PreimageKey(), headerRlp))
}
func storeBlob(t *testing.T, kv kvstore.KV, commitment eth.Bytes48, blob *eth.Blob) {
// Pre-store versioned hash preimage (commitment)
err := kv.Put(preimage.Sha256Key(sha256.Sum256(commitment[:])).PreimageKey(), commitment[:])
require.NoError(t, err, "Failed to store versioned hash preimage in kvstore")
// Pre-store blob field elements
blobKeyBuf := make([]byte, 80)
copy(blobKeyBuf[:48], commitment[:])
for i := 0; i < params.BlobTxFieldElementsPerBlob; i++ {
binary.BigEndian.PutUint64(blobKeyBuf[72:], uint64(i))
feKey := crypto.Keccak256Hash(blobKeyBuf)
err = kv.Put(preimage.BlobKey(feKey).PreimageKey(), blob[i<<5:(i+1)<<5])
require.NoError(t, err, "Failed to store field element preimage in kvstore")
}
}
func asOracleFn(t *testing.T, prefetcher *Prefetcher) preimage.OracleFn {
return func(key preimage.Key) []byte {
pre, err := prefetcher.GetPreimage(context.Background(), key.PreimageKey())
require.NoError(t, err)
return pre
}
}
func asHinter(t *testing.T, prefetcher *Prefetcher) preimage.HinterFn {
return func(v preimage.Hint) {
err := prefetcher.Hint(v.Hint())
require.NoError(t, err)
}
}
func assertTransactionsEqual(t *testing.T, blockTx types.Transactions, txs types.Transactions) {
require.Equal(t, len(blockTx), len(txs))
for i, tx := range txs {
require.Equal(t, blockTx[i].Hash(), tx.Hash())
}
}
func assertReceiptsEqual(t *testing.T, expectedRcpt types.Receipts, actualRcpt types.Receipts) {
require.Equal(t, len(expectedRcpt), len(actualRcpt))
for i, rcpt := range actualRcpt {
// Make a copy of each to zero out fields we expect to be different
expected := *expectedRcpt[i]
actual := *rcpt
expected.ContractAddress = common.Address{}
actual.ContractAddress = common.Address{}
require.Equal(t, expected, actual)
}
}
// legacyOracleImpl is a wrapper around the new preimage.Oracle interface that uses the legacy preimage hint API.
// It's used to test backwards-compatibility with clients using legacy preimage hints.
type legacyPrecompileOracle struct {
oracle preimage.Oracle
hint preimage.Hinter
}
func newLegacyPrecompileOracle(raw preimage.Oracle, hint preimage.Hinter) *legacyPrecompileOracle {
return &legacyPrecompileOracle{
oracle: raw,
hint: hint,
}
}
func (o *legacyPrecompileOracle) Precompile(address common.Address, input []byte) ([]byte, bool) {
hintBytes := append(address.Bytes(), input...)
o.hint.Hint(l1.PrecompileHint(hintBytes))
key := preimage.PrecompileKey(crypto.Keccak256Hash(hintBytes))
result := o.oracle.Get(key)
if len(result) == 0 { // must contain at least the status code
panic(fmt.Errorf("unexpected precompile oracle behavior, got result: %x", result))
}
return result[1:], result[0] == 1
}