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Decode storage value RLP after fetching from statediffs

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This commit is contained in:
Elizabeth Engelman 2019-08-30 14:17:26 -05:00
parent 2931edc317
commit 6869330bd3
5 changed files with 157 additions and 57 deletions
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7
libraries/shared/fetcher/geth_rpc_storage_fetcher.go
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@ -60,7 +60,12 @@ func (fetcher GethRpcStorageFetcher) FetchStorageDiffs(out chan<- utils.StorageD
logrus.Trace(fmt.Sprintf("iterating through %d Storage values on account", len(account.Storage)))
for _, storage := range account.Storage {
logrus.Trace("adding storage diff to out channel")
out <- utils.FromGethStateDiff(account, stateDiff, storage)
diff, formatErr := utils.FromGethStateDiff(account, stateDiff, storage)
if formatErr != nil {
errs <- formatErr
}
out <- diff
}
}
}

104
libraries/shared/fetcher/geth_rpc_storage_fetcher_test.go
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@ -16,6 +16,7 @@ package fetcher_test
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/statediff"
. "github.com/onsi/ginkgo"
@ -93,34 +94,7 @@ var _ = Describe("Geth RPC Storage Fetcher", func() {
close(done)
})
It("adds parsed statediff payloads to the rows channel", func(done Done) {
streamer.SetPayloads([]statediff.Payload{test_data.MockStatediffPayload})
go statediffFetcher.FetchStorageDiffs(storagediffChan, errorChan)
height := test_data.BlockNumber
intHeight := int(height.Int64())
expectedStorageDiff := utils.StorageDiff{
KeccakOfContractAddress: common.BytesToHash(test_data.ContractLeafKey[:]),
BlockHash: common.HexToHash("0xfa40fbe2d98d98b3363a778d52f2bcd29d6790b9b3f3cab2b167fd12d3550f73"),
BlockHeight: intHeight,
StorageKey: common.BytesToHash(test_data.StorageKey),
StorageValue: common.BytesToHash(test_data.StorageValue),
}
anotherExpectedStorageDiff := utils.StorageDiff{
KeccakOfContractAddress: common.BytesToHash(test_data.AnotherContractLeafKey[:]),
BlockHash: common.HexToHash("0xfa40fbe2d98d98b3363a778d52f2bcd29d6790b9b3f3cab2b167fd12d3550f73"),
BlockHeight: intHeight,
StorageKey: common.BytesToHash(test_data.StorageKey),
StorageValue: common.BytesToHash(test_data.StorageValue),
}
Expect(<-storagediffChan).To(Equal(expectedStorageDiff))
Expect(<-storagediffChan).To(Equal(anotherExpectedStorageDiff))
close(done)
})
It("adds errors to error channel if parsing the diff fails", func(done Done) {
It("adds errors to error channel if decoding the state diff RLP fails", func(done Done) {
badStatediffPayload := statediff.Payload{}
streamer.SetPayloads([]statediff.Payload{badStatediffPayload})
@ -130,4 +104,78 @@ var _ = Describe("Geth RPC Storage Fetcher", func() {
close(done)
})
It("adds parsed statediff payloads to the rows channel", func(done Done) {
streamer.SetPayloads([]statediff.Payload{test_data.MockStatediffPayload})
go statediffFetcher.FetchStorageDiffs(storagediffChan, errorChan)
height := test_data.BlockNumber
intHeight := int(height.Int64())
createdExpectedStorageDiff := utils.StorageDiff{
KeccakOfContractAddress: common.BytesToHash(test_data.ContractLeafKey[:]),
BlockHash: common.HexToHash("0xfa40fbe2d98d98b3363a778d52f2bcd29d6790b9b3f3cab2b167fd12d3550f73"),
BlockHeight: intHeight,
StorageKey: common.BytesToHash(test_data.StorageKey),
StorageValue: common.BytesToHash(test_data.SmallStorageValue),
}
updatedExpectedStorageDiff := utils.StorageDiff{
KeccakOfContractAddress: common.BytesToHash(test_data.AnotherContractLeafKey[:]),
BlockHash: common.HexToHash("0xfa40fbe2d98d98b3363a778d52f2bcd29d6790b9b3f3cab2b167fd12d3550f73"),
BlockHeight: intHeight,
StorageKey: common.BytesToHash(test_data.StorageKey),
StorageValue: common.BytesToHash(test_data.LargeStorageValue),
}
deletedExpectedStorageDiff := utils.StorageDiff{
KeccakOfContractAddress: common.BytesToHash(test_data.AnotherContractLeafKey[:]),
BlockHash: common.HexToHash("0xfa40fbe2d98d98b3363a778d52f2bcd29d6790b9b3f3cab2b167fd12d3550f73"),
BlockHeight: intHeight,
StorageKey: common.BytesToHash(test_data.StorageKey),
StorageValue: common.BytesToHash(test_data.SmallStorageValue),
}
createdStateDiff := <-storagediffChan
updatedStateDiff := <-storagediffChan
deletedStateDiff := <-storagediffChan
Expect(createdStateDiff).To(Equal(createdExpectedStorageDiff))
Expect(updatedStateDiff).To(Equal(updatedExpectedStorageDiff))
Expect(deletedStateDiff).To(Equal(deletedExpectedStorageDiff))
close(done)
})
It("adds errors to error channel if formatting the diff as a StateDiff object fails", func(done Done) {
badStorageDiffs := []statediff.StorageDiff{{
Key: test_data.StorageKey,
Value: []byte{1, 2, 3},
// this storage value will fail to be decoded as an RLP with the following error message:
// "input contains more than one value"
Path: test_data.StoragePath,
Proof: [][]byte{},
}}
accountDiffs := test_data.CreatedAccountDiffs
accountDiffs[0].Storage = badStorageDiffs
stateDiff := statediff.StateDiff{
BlockNumber: test_data.BlockNumber,
BlockHash: common.HexToHash(test_data.BlockHash),
CreatedAccounts: accountDiffs,
}
stateDiffRlp, err := rlp.EncodeToBytes(stateDiff)
Expect(err).NotTo(HaveOccurred())
badStatediffPayload := statediff.Payload{
StateDiffRlp: stateDiffRlp,
}
streamer.SetPayloads([]statediff.Payload{badStatediffPayload})
go statediffFetcher.FetchStorageDiffs(storagediffChan, errorChan)
Expect(<-errorChan).To(MatchError("rlp: input contains more than one value"))
close(done)
})
})

13
libraries/shared/storage/utils/diff.go
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@ -19,6 +19,7 @@ package utils
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/statediff"
"strconv"
)
@ -51,14 +52,20 @@ func FromParityCsvRow(csvRow []string) (StorageDiff, error) {
}, nil
}
func FromGethStateDiff(account statediff.AccountDiff, stateDiff *statediff.StateDiff, storage statediff.StorageDiff) StorageDiff {
func FromGethStateDiff(account statediff.AccountDiff, stateDiff *statediff.StateDiff, storage statediff.StorageDiff) (StorageDiff, error) {
var decodedValue []byte
err := rlp.DecodeBytes(storage.Value, &decodedValue)
if err != nil {
return StorageDiff{}, err
}
return StorageDiff{
KeccakOfContractAddress: common.BytesToHash(account.Key),
BlockHash: stateDiff.BlockHash,
BlockHeight: int(stateDiff.BlockNumber.Int64()),
StorageKey: common.BytesToHash(storage.Key),
StorageValue: common.BytesToHash(storage.Value),
}
StorageValue: common.BytesToHash(decodedValue),
}, nil
}
func HexToKeccak256Hash(hex string) common.Hash {

48
libraries/shared/storage/utils/diff_test.go
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@ -18,10 +18,12 @@ package utils_test
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/statediff"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/vulcanize/vulcanizedb/libraries/shared/storage/utils"
"github.com/vulcanize/vulcanizedb/libraries/shared/test_data"
"github.com/vulcanize/vulcanizedb/pkg/fakes"
"math/big"
"math/rand"
@ -63,18 +65,26 @@ var _ = Describe("Storage row parsing", func() {
})
Describe("FromGethStateDiff", func() {
It("adds relevant fields to diff", func() {
accountDiff := statediff.AccountDiff{Key: []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 0}}
stateDiff := &statediff.StateDiff{
var (
accountDiff = statediff.AccountDiff{Key: []byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 0}}
stateDiff = &statediff.StateDiff{
BlockNumber: big.NewInt(rand.Int63()),
BlockHash: fakes.FakeHash,
}
)
It("adds relevant fields to diff", func() {
storageValueBytes := []byte{3}
storageValueRlp, encodeErr := rlp.EncodeToBytes(storageValueBytes)
Expect(encodeErr).NotTo(HaveOccurred())
storageDiff := statediff.StorageDiff{
Key: []byte{0, 9, 8, 7, 6, 5, 4, 3, 2, 1},
Value: []byte{1, 2, 3, 4, 5, 0, 9, 8, 7, 6},
Value: storageValueRlp,
}
result := utils.FromGethStateDiff(accountDiff, stateDiff, storageDiff)
result, err := utils.FromGethStateDiff(accountDiff, stateDiff, storageDiff)
Expect(err).NotTo(HaveOccurred())
expectedAddress := common.BytesToHash(accountDiff.Key)
Expect(result.KeccakOfContractAddress).To(Equal(expectedAddress))
@ -83,8 +93,34 @@ var _ = Describe("Storage row parsing", func() {
Expect(result.BlockHeight).To(Equal(expectedBlockHeight))
expectedStorageKey := common.BytesToHash(storageDiff.Key)
Expect(result.StorageKey).To(Equal(expectedStorageKey))
expectedStorageValue := common.BytesToHash(storageDiff.Value)
expectedStorageValue := common.BytesToHash(storageValueBytes)
Expect(result.StorageValue).To(Equal(expectedStorageValue))
})
It("handles decoding large storage values from their RLP", func() {
storageValueBytes := []byte{1, 2, 3, 4, 5, 0, 9, 8, 7, 6}
storageValueRlp, encodeErr := rlp.EncodeToBytes(storageValueBytes)
Expect(encodeErr).NotTo(HaveOccurred())
storageDiff := statediff.StorageDiff{
Key: []byte{0, 9, 8, 7, 6, 5, 4, 3, 2, 1},
Value: storageValueRlp,
}
result, err := utils.FromGethStateDiff(accountDiff, stateDiff, storageDiff)
Expect(err).NotTo(HaveOccurred())
Expect(result.StorageValue).To(Equal(common.BytesToHash(storageValueBytes)))
})
It("returns an err if decoding the storage value Rlp fails", func() {
storageDiff := statediff.StorageDiff{
Key: []byte{0, 9, 8, 7, 6, 5, 4, 3, 2, 1},
Value: test_data.StorageKey,
}
_, err := utils.FromGethStateDiff(accountDiff, stateDiff, storageDiff)
Expect(err).To(HaveOccurred())
Expect(err).To(MatchError("rlp: input contains more than one value"))
})
})
})

30
libraries/shared/test_data/statediff.go
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@ -35,14 +35,23 @@ var (
ContractRoot = common.HexToHash("0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421")
StoragePath = common.HexToHash("0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470").Bytes()
StorageKey = common.HexToHash("0000000000000000000000000000000000000000000000000000000000000001").Bytes()
StorageValue = common.Hex2Bytes("0x03")
storage = []statediff.StorageDiff{{
SmallStorageValue = common.Hex2Bytes("03")
SmallStorageValueRlp, _ = rlp.EncodeToBytes(SmallStorageValue)
storageWithSmallValue = []statediff.StorageDiff{{
Key: StorageKey,
Value: StorageValue,
Value: SmallStorageValueRlp,
Path: StoragePath,
Proof: [][]byte{},
}}
emptyStorage = make([]statediff.StorageDiff, 0)
LargeStorageValue = common.Hex2Bytes("00191b53778c567b14b50ba0000")
LargeStorageValueRlp, rlpErr = rlp.EncodeToBytes(LargeStorageValue)
storageWithLargeValue = []statediff.StorageDiff{{
Key: StorageKey,
Value: LargeStorageValueRlp,
Path: StoragePath,
Proof: [][]byte{},
}}
EmptyStorage = make([]statediff.StorageDiff, 0)
contractAddress = common.HexToAddress("0xaE9BEa628c4Ce503DcFD7E305CaB4e29E7476592")
ContractLeafKey = crypto.Keccak256Hash(contractAddress[:])
anotherContractAddress = common.HexToAddress("0xaE9BEa628c4Ce503DcFD7E305CaB4e29E7476593")
@ -59,25 +68,20 @@ var (
{
Key: ContractLeafKey.Bytes(),
Value: valueBytes,
Storage: storage,
},
{
Key: AnotherContractLeafKey.Bytes(),
Value: valueBytes,
Storage: emptyStorage,
Storage: storageWithSmallValue,
},
}
UpdatedAccountDiffs = []statediff.AccountDiff{{
Key: AnotherContractLeafKey.Bytes(),
Value: valueBytes,
Storage: storage,
Storage: storageWithLargeValue,
}}
DeletedAccountDiffs = []statediff.AccountDiff{{
Key: ContractLeafKey.Bytes(),
Key: AnotherContractLeafKey.Bytes(),
Value: valueBytes,
Storage: storage,
Storage: storageWithSmallValue,
}}
MockStateDiff = statediff.StateDiff{