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internal/ethapi: support block number or hash on state-related methods (#19491)

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This change adds support for EIP-1898.
This commit is contained in:
Ryan Schneider
2019-09-26 01:47:31 -07:00
committed by Felix Lange
parent 62391ddbeb
commit ad03d9801c
10 changed files with 408 additions and 166 deletions
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5
core/blockchain.go
View File

@@ -2139,6 +2139,11 @@ func (bc *BlockChain) HasHeader(hash common.Hash, number uint64) bool {
return bc.hc.HasHeader(hash, number)
}
// GetCanonicalHash returns the canonical hash for a given block number
func (bc *BlockChain) GetCanonicalHash(number uint64) common.Hash {
return bc.hc.GetCanonicalHash(number)
}
// GetBlockHashesFromHash retrieves a number of block hashes starting at a given
// hash, fetching towards the genesis block.
func (bc *BlockChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash {

4
core/headerchain.go
View File

@@ -448,6 +448,10 @@ func (hc *HeaderChain) GetHeaderByNumber(number uint64) *types.Header {
return hc.GetHeader(hash, number)
}
func (hc *HeaderChain) GetCanonicalHash(number uint64) common.Hash {
return rawdb.ReadCanonicalHash(hc.chainDb, number)
}
// CurrentHeader retrieves the current head header of the canonical chain. The
// header is retrieved from the HeaderChain's internal cache.
func (hc *HeaderChain) CurrentHeader() *types.Header {

59
eth/api_backend.go
View File

@@ -72,6 +72,23 @@ func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumb
return b.eth.blockchain.GetHeaderByNumber(uint64(number)), nil
}
func (b *EthAPIBackend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.HeaderByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header := b.eth.blockchain.GetHeaderByHash(hash)
if header == nil {
return nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
return header, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *EthAPIBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
return b.eth.blockchain.GetHeaderByHash(hash), nil
}
@@ -93,6 +110,27 @@ func (b *EthAPIBackend) BlockByHash(ctx context.Context, hash common.Hash) (*typ
return b.eth.blockchain.GetBlockByHash(hash), nil
}
func (b *EthAPIBackend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.BlockByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header := b.eth.blockchain.GetHeaderByHash(hash)
if header == nil {
return nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
block := b.eth.blockchain.GetBlock(hash, header.Number.Uint64())
if block == nil {
return nil, errors.New("header found, but block body is missing")
}
return block, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
// Pending state is only known by the miner
if number == rpc.PendingBlockNumber {
@@ -111,6 +149,27 @@ func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.B
return stateDb, header, err
}
func (b *EthAPIBackend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.StateAndHeaderByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header, err := b.HeaderByHash(ctx, hash)
if err != nil {
return nil, nil, err
}
if header == nil {
return nil, nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, nil, errors.New("hash is not currently canonical")
}
stateDb, err := b.eth.BlockChain().StateAt(header.Root)
return stateDb, header, err
}
return nil, nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *EthAPIBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
return b.eth.blockchain.GetReceiptsByHash(hash), nil
}

248
graphql/graphql.go
View File

@@ -36,20 +36,19 @@ import (
)
var (
errOnlyOnMainChain = errors.New("this operation is only available for blocks on the canonical chain")
errBlockInvariant = errors.New("block objects must be instantiated with at least one of num or hash")
errBlockInvariant = errors.New("block objects must be instantiated with at least one of num or hash")
)
// Account represents an Ethereum account at a particular block.
type Account struct {
backend ethapi.Backend
address common.Address
blockNumber rpc.BlockNumber
backend ethapi.Backend
address common.Address
blockNrOrHash rpc.BlockNumberOrHash
}
// getState fetches the StateDB object for an account.
func (a *Account) getState(ctx context.Context) (*state.StateDB, error) {
state, _, err := a.backend.StateAndHeaderByNumber(ctx, a.blockNumber)
state, _, err := a.backend.StateAndHeaderByNumberOrHash(ctx, a.blockNrOrHash)
return state, err
}
@@ -102,9 +101,9 @@ func (l *Log) Transaction(ctx context.Context) *Transaction {
func (l *Log) Account(ctx context.Context, args BlockNumberArgs) *Account {
return &Account{
backend: l.backend,
address: l.log.Address,
blockNumber: args.Number(),
backend: l.backend,
address: l.log.Address,
blockNrOrHash: args.NumberOrLatest(),
}
}
@@ -136,10 +135,10 @@ func (t *Transaction) resolve(ctx context.Context) (*types.Transaction, error) {
tx, blockHash, _, index := rawdb.ReadTransaction(t.backend.ChainDb(), t.hash)
if tx != nil {
t.tx = tx
blockNrOrHash := rpc.BlockNumberOrHashWithHash(blockHash, false)
t.block = &Block{
backend: t.backend,
hash: blockHash,
canonical: unknown,
backend: t.backend,
numberOrHash: &blockNrOrHash,
}
t.index = index
} else {
@@ -203,9 +202,9 @@ func (t *Transaction) To(ctx context.Context, args BlockNumberArgs) (*Account, e
return nil, nil
}
return &Account{
backend: t.backend,
address: *to,
blockNumber: args.Number(),
backend: t.backend,
address: *to,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
@@ -221,9 +220,9 @@ func (t *Transaction) From(ctx context.Context, args BlockNumberArgs) (*Account,
from, _ := types.Sender(signer, tx)
return &Account{
backend: t.backend,
address: from,
blockNumber: args.Number(),
backend: t.backend,
address: from,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
@@ -293,9 +292,9 @@ func (t *Transaction) CreatedContract(ctx context.Context, args BlockNumberArgs)
return nil, err
}
return &Account{
backend: t.backend,
address: receipt.ContractAddress,
blockNumber: args.Number(),
backend: t.backend,
address: receipt.ContractAddress,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
@@ -317,45 +316,16 @@ func (t *Transaction) Logs(ctx context.Context) (*[]*Log, error) {
type BlockType int
const (
unknown BlockType = iota
isCanonical
notCanonical
)
// Block represents an Ethereum block.
// backend, and either num or hash are mandatory. All other fields are lazily fetched
// backend, and numberOrHash are mandatory. All other fields are lazily fetched
// when required.
type Block struct {
backend ethapi.Backend
num *rpc.BlockNumber
hash common.Hash
header *types.Header
block *types.Block
receipts []*types.Receipt
canonical BlockType // Indicates if this block is on the main chain or not.
}
func (b *Block) onMainChain(ctx context.Context) error {
if b.canonical == unknown {
header, err := b.resolveHeader(ctx)
if err != nil {
return err
}
canonHeader, err := b.backend.HeaderByNumber(ctx, rpc.BlockNumber(header.Number.Uint64()))
if err != nil {
return err
}
if header.Hash() == canonHeader.Hash() {
b.canonical = isCanonical
} else {
b.canonical = notCanonical
}
}
if b.canonical != isCanonical {
return errOnlyOnMainChain
}
return nil
backend ethapi.Backend
numberOrHash *rpc.BlockNumberOrHash
hash common.Hash
header *types.Header
block *types.Block
receipts []*types.Receipt
}
// resolve returns the internal Block object representing this block, fetching
@@ -364,14 +334,17 @@ func (b *Block) resolve(ctx context.Context) (*types.Block, error) {
if b.block != nil {
return b.block, nil
}
var err error
if b.hash != (common.Hash{}) {
b.block, err = b.backend.BlockByHash(ctx, b.hash)
} else {
b.block, err = b.backend.BlockByNumber(ctx, *b.num)
if b.numberOrHash == nil {
latest := rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber)
b.numberOrHash = &latest
}
var err error
b.block, err = b.backend.BlockByNumberOrHash(ctx, *b.numberOrHash)
if b.block != nil && b.header == nil {
b.header = b.block.Header()
if hash, ok := b.numberOrHash.Hash(); ok {
b.hash = hash
}
}
return b.block, err
}
@@ -380,7 +353,7 @@ func (b *Block) resolve(ctx context.Context) (*types.Block, error) {
// if necessary. Call this function instead of `resolve` unless you need the
// additional data (transactions and uncles).
func (b *Block) resolveHeader(ctx context.Context) (*types.Header, error) {
if b.num == nil && b.hash == (common.Hash{}) {
if b.numberOrHash == nil && b.hash == (common.Hash{}) {
return nil, errBlockInvariant
}
var err error
@@ -388,7 +361,7 @@ func (b *Block) resolveHeader(ctx context.Context) (*types.Header, error) {
if b.hash != (common.Hash{}) {
b.header, err = b.backend.HeaderByHash(ctx, b.hash)
} else {
b.header, err = b.backend.HeaderByNumber(ctx, *b.num)
b.header, err = b.backend.HeaderByNumberOrHash(ctx, *b.numberOrHash)
}
}
return b.header, err
@@ -416,15 +389,12 @@ func (b *Block) resolveReceipts(ctx context.Context) ([]*types.Receipt, error) {
}
func (b *Block) Number(ctx context.Context) (hexutil.Uint64, error) {
if b.num == nil || *b.num == rpc.LatestBlockNumber {
header, err := b.resolveHeader(ctx)
if err != nil {
return 0, err
}
num := rpc.BlockNumber(header.Number.Uint64())
b.num = &num
header, err := b.resolveHeader(ctx)
if err != nil {
return 0, err
}
return hexutil.Uint64(*b.num), nil
return hexutil.Uint64(header.Number.Uint64()), nil
}
func (b *Block) Hash(ctx context.Context) (common.Hash, error) {
@@ -456,26 +426,17 @@ func (b *Block) GasUsed(ctx context.Context) (hexutil.Uint64, error) {
func (b *Block) Parent(ctx context.Context) (*Block, error) {
// If the block header hasn't been fetched, and we'll need it, fetch it.
if b.num == nil && b.hash != (common.Hash{}) && b.header == nil {
if b.numberOrHash == nil && b.header == nil {
if _, err := b.resolveHeader(ctx); err != nil {
return nil, err
}
}
if b.header != nil && b.header.Number.Uint64() > 0 {
num := rpc.BlockNumber(b.header.Number.Uint64() - 1)
num := rpc.BlockNumberOrHashWithNumber(rpc.BlockNumber(b.header.Number.Uint64() - 1))
return &Block{
backend: b.backend,
num: &num,
hash: b.header.ParentHash,
canonical: unknown,
}, nil
}
if b.num != nil && *b.num != 0 {
num := *b.num - 1
return &Block{
backend: b.backend,
num: &num,
canonical: isCanonical,
backend: b.backend,
numberOrHash: &num,
hash: b.header.ParentHash,
}, nil
}
return nil, nil
@@ -561,13 +522,11 @@ func (b *Block) Ommers(ctx context.Context) (*[]*Block, error) {
}
ret := make([]*Block, 0, len(block.Uncles()))
for _, uncle := range block.Uncles() {
blockNumber := rpc.BlockNumber(uncle.Number.Uint64())
blockNumberOrHash := rpc.BlockNumberOrHashWithHash(uncle.Hash(), false)
ret = append(ret, &Block{
backend: b.backend,
num: &blockNumber,
hash: uncle.Hash(),
header: uncle,
canonical: notCanonical,
backend: b.backend,
numberOrHash: &blockNumberOrHash,
header: uncle,
})
}
return &ret, nil
@@ -603,16 +562,26 @@ func (b *Block) TotalDifficulty(ctx context.Context) (hexutil.Big, error) {
// BlockNumberArgs encapsulates arguments to accessors that specify a block number.
type BlockNumberArgs struct {
// TODO: Ideally we could use input unions to allow the query to specify the
// block parameter by hash, block number, or tag but input unions aren't part of the
// standard GraphQL schema SDL yet, see: https://github.com/graphql/graphql-spec/issues/488
Block *hexutil.Uint64
}
// Number returns the provided block number, or rpc.LatestBlockNumber if none
// NumberOr returns the provided block number argument, or the "current" block number or hash if none
// was provided.
func (a BlockNumberArgs) Number() rpc.BlockNumber {
func (a BlockNumberArgs) NumberOr(current rpc.BlockNumberOrHash) rpc.BlockNumberOrHash {
if a.Block != nil {
return rpc.BlockNumber(*a.Block)
blockNr := rpc.BlockNumber(*a.Block)
return rpc.BlockNumberOrHashWithNumber(blockNr)
}
return rpc.LatestBlockNumber
return current
}
// NumberOrLatest returns the provided block number argument, or the "latest" block number if none
// was provided.
func (a BlockNumberArgs) NumberOrLatest() rpc.BlockNumberOrHash {
return a.NumberOr(rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber))
}
func (b *Block) Miner(ctx context.Context, args BlockNumberArgs) (*Account, error) {
@@ -621,9 +590,9 @@ func (b *Block) Miner(ctx context.Context, args BlockNumberArgs) (*Account, erro
return nil, err
}
return &Account{
backend: b.backend,
address: header.Coinbase,
blockNumber: args.Number(),
backend: b.backend,
address: header.Coinbase,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
@@ -683,13 +652,11 @@ func (b *Block) OmmerAt(ctx context.Context, args struct{ Index int32 }) (*Block
return nil, nil
}
uncle := uncles[args.Index]
blockNumber := rpc.BlockNumber(uncle.Number.Uint64())
blockNumberOrHash := rpc.BlockNumberOrHashWithHash(uncle.Hash(), false)
return &Block{
backend: b.backend,
num: &blockNumber,
hash: uncle.Hash(),
header: uncle,
canonical: notCanonical,
backend: b.backend,
numberOrHash: &blockNumberOrHash,
header: uncle,
}, nil
}
@@ -757,20 +724,16 @@ func (b *Block) Logs(ctx context.Context, args struct{ Filter BlockFilterCriteri
func (b *Block) Account(ctx context.Context, args struct {
Address common.Address
}) (*Account, error) {
err := b.onMainChain(ctx)
if err != nil {
return nil, err
}
if b.num == nil {
if b.numberOrHash == nil {
_, err := b.resolveHeader(ctx)
if err != nil {
return nil, err
}
}
return &Account{
backend: b.backend,
address: args.Address,
blockNumber: *b.num,
backend: b.backend,
address: args.Address,
blockNrOrHash: *b.numberOrHash,
}, nil
}
@@ -807,17 +770,13 @@ func (c *CallResult) Status() hexutil.Uint64 {
func (b *Block) Call(ctx context.Context, args struct {
Data ethapi.CallArgs
}) (*CallResult, error) {
err := b.onMainChain(ctx)
if err != nil {
return nil, err
}
if b.num == nil {
_, err := b.resolveHeader(ctx)
if b.numberOrHash == nil {
_, err := b.resolve(ctx)
if err != nil {
return nil, err
}
}
result, gas, failed, err := ethapi.DoCall(ctx, b.backend, args.Data, *b.num, nil, vm.Config{}, 5*time.Second, b.backend.RPCGasCap())
result, gas, failed, err := ethapi.DoCall(ctx, b.backend, args.Data, *b.numberOrHash, nil, vm.Config{}, 5*time.Second, b.backend.RPCGasCap())
status := hexutil.Uint64(1)
if failed {
status = 0
@@ -832,17 +791,13 @@ func (b *Block) Call(ctx context.Context, args struct {
func (b *Block) EstimateGas(ctx context.Context, args struct {
Data ethapi.CallArgs
}) (hexutil.Uint64, error) {
err := b.onMainChain(ctx)
if err != nil {
return hexutil.Uint64(0), err
}
if b.num == nil {
if b.numberOrHash == nil {
_, err := b.resolveHeader(ctx)
if err != nil {
return hexutil.Uint64(0), err
}
}
gas, err := ethapi.DoEstimateGas(ctx, b.backend, args.Data, *b.num, b.backend.RPCGasCap())
gas, err := ethapi.DoEstimateGas(ctx, b.backend, args.Data, *b.numberOrHash, b.backend.RPCGasCap())
return gas, err
}
@@ -875,17 +830,19 @@ func (p *Pending) Transactions(ctx context.Context) (*[]*Transaction, error) {
func (p *Pending) Account(ctx context.Context, args struct {
Address common.Address
}) *Account {
pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber)
return &Account{
backend: p.backend,
address: args.Address,
blockNumber: rpc.PendingBlockNumber,
backend: p.backend,
address: args.Address,
blockNrOrHash: pendingBlockNr,
}
}
func (p *Pending) Call(ctx context.Context, args struct {
Data ethapi.CallArgs
}) (*CallResult, error) {
result, gas, failed, err := ethapi.DoCall(ctx, p.backend, args.Data, rpc.PendingBlockNumber, nil, vm.Config{}, 5*time.Second, p.backend.RPCGasCap())
pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber)
result, gas, failed, err := ethapi.DoCall(ctx, p.backend, args.Data, pendingBlockNr, nil, vm.Config{}, 5*time.Second, p.backend.RPCGasCap())
status := hexutil.Uint64(1)
if failed {
status = 0
@@ -900,7 +857,8 @@ func (p *Pending) Call(ctx context.Context, args struct {
func (p *Pending) EstimateGas(ctx context.Context, args struct {
Data ethapi.CallArgs
}) (hexutil.Uint64, error) {
return ethapi.DoEstimateGas(ctx, p.backend, args.Data, rpc.PendingBlockNumber, p.backend.RPCGasCap())
pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber)
return ethapi.DoEstimateGas(ctx, p.backend, args.Data, pendingBlockNr, p.backend.RPCGasCap())
}
// Resolver is the top-level object in the GraphQL hierarchy.
@@ -914,24 +872,23 @@ func (r *Resolver) Block(ctx context.Context, args struct {
}) (*Block, error) {
var block *Block
if args.Number != nil {
num := rpc.BlockNumber(uint64(*args.Number))
number := rpc.BlockNumber(uint64(*args.Number))
numberOrHash := rpc.BlockNumberOrHashWithNumber(number)
block = &Block{
backend: r.backend,
num: &num,
canonical: isCanonical,
backend: r.backend,
numberOrHash: &numberOrHash,
}
} else if args.Hash != nil {
numberOrHash := rpc.BlockNumberOrHashWithHash(*args.Hash, false)
block = &Block{
backend: r.backend,
hash: *args.Hash,
canonical: unknown,
backend: r.backend,
numberOrHash: &numberOrHash,
}
} else {
num := rpc.LatestBlockNumber
numberOrHash := rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber)
block = &Block{
backend: r.backend,
num: &num,
canonical: isCanonical,
backend: r.backend,
numberOrHash: &numberOrHash,
}
}
// Resolve the header, return nil if it doesn't exist.
@@ -963,11 +920,10 @@ func (r *Resolver) Blocks(ctx context.Context, args struct {
}
ret := make([]*Block, 0, to-from+1)
for i := from; i <= to; i++ {
num := i
numberOrHash := rpc.BlockNumberOrHashWithNumber(i)
ret = append(ret, &Block{
backend: r.backend,
num: &num,
canonical: isCanonical,
backend: r.backend,
numberOrHash: &numberOrHash,
})
}
return ret, nil

42
internal/ethapi/api.go
View File

@@ -530,8 +530,8 @@ func (s *PublicBlockChainAPI) BlockNumber() hexutil.Uint64 {
// GetBalance returns the amount of wei for the given address in the state of the
// given block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta
// block numbers are also allowed.
func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (*hexutil.Big, error) {
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (*hexutil.Big, error) {
state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
if state == nil || err != nil {
return nil, err
}
@@ -555,8 +555,8 @@ type StorageResult struct {
}
// GetProof returns the Merkle-proof for a given account and optionally some storage keys.
func (s *PublicBlockChainAPI) GetProof(ctx context.Context, address common.Address, storageKeys []string, blockNr rpc.BlockNumber) (*AccountResult, error) {
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
func (s *PublicBlockChainAPI) GetProof(ctx context.Context, address common.Address, storageKeys []string, blockNrOrHash rpc.BlockNumberOrHash) (*AccountResult, error) {
state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
if state == nil || err != nil {
return nil, err
}
@@ -712,8 +712,8 @@ func (s *PublicBlockChainAPI) GetUncleCountByBlockHash(ctx context.Context, bloc
}
// GetCode returns the code stored at the given address in the state for the given block number.
func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) {
state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
if state == nil || err != nil {
return nil, err
}
@@ -724,8 +724,8 @@ func (s *PublicBlockChainAPI) GetCode(ctx context.Context, address common.Addres
// GetStorageAt returns the storage from the state at the given address, key and
// block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta block
// numbers are also allowed.
func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNr rpc.BlockNumber) (hexutil.Bytes, error) {
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
func (s *PublicBlockChainAPI) GetStorageAt(ctx context.Context, address common.Address, key string, blockNrOrHash rpc.BlockNumberOrHash) (hexutil.Bytes, error) {
state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
if state == nil || err != nil {
return nil, err
}
@@ -757,10 +757,10 @@ type account struct {
StateDiff *map[common.Hash]common.Hash `json:"stateDiff"`
}
func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumber, overrides map[common.Address]account, vmCfg vm.Config, timeout time.Duration, globalGasCap *big.Int) ([]byte, uint64, bool, error) {
func DoCall(ctx context.Context, b Backend, args CallArgs, blockNrOrHash rpc.BlockNumberOrHash, overrides map[common.Address]account, vmCfg vm.Config, timeout time.Duration, globalGasCap *big.Int) ([]byte, uint64, bool, error) {
defer func(start time.Time) { log.Debug("Executing EVM call finished", "runtime", time.Since(start)) }(time.Now())
state, header, err := b.StateAndHeaderByNumber(ctx, blockNr)
state, header, err := b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
if state == nil || err != nil {
return nil, 0, false, err
}
@@ -874,16 +874,16 @@ func DoCall(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumb
//
// Note, this function doesn't make and changes in the state/blockchain and is
// useful to execute and retrieve values.
func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNr rpc.BlockNumber, overrides *map[common.Address]account) (hexutil.Bytes, error) {
func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNrOrHash rpc.BlockNumberOrHash, overrides *map[common.Address]account) (hexutil.Bytes, error) {
var accounts map[common.Address]account
if overrides != nil {
accounts = *overrides
}
result, _, _, err := DoCall(ctx, s.b, args, blockNr, accounts, vm.Config{}, 5*time.Second, s.b.RPCGasCap())
result, _, _, err := DoCall(ctx, s.b, args, blockNrOrHash, accounts, vm.Config{}, 5*time.Second, s.b.RPCGasCap())
return (hexutil.Bytes)(result), err
}
func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.BlockNumber, gasCap *big.Int) (hexutil.Uint64, error) {
func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNrOrHash rpc.BlockNumberOrHash, gasCap *big.Int) (hexutil.Uint64, error) {
// Binary search the gas requirement, as it may be higher than the amount used
var (
lo uint64 = params.TxGas - 1
@@ -894,7 +894,7 @@ func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.Bl
hi = uint64(*args.Gas)
} else {
// Retrieve the block to act as the gas ceiling
block, err := b.BlockByNumber(ctx, blockNr)
block, err := b.BlockByNumberOrHash(ctx, blockNrOrHash)
if err != nil {
return 0, err
}
@@ -910,7 +910,7 @@ func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.Bl
executable := func(gas uint64) bool {
args.Gas = (*hexutil.Uint64)(&gas)
_, _, failed, err := DoCall(ctx, b, args, rpc.PendingBlockNumber, nil, vm.Config{}, 0, gasCap)
_, _, failed, err := DoCall(ctx, b, args, blockNrOrHash, nil, vm.Config{}, 0, gasCap)
if err != nil || failed {
return false
}
@@ -937,7 +937,8 @@ func DoEstimateGas(ctx context.Context, b Backend, args CallArgs, blockNr rpc.Bl
// EstimateGas returns an estimate of the amount of gas needed to execute the
// given transaction against the current pending block.
func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs) (hexutil.Uint64, error) {
return DoEstimateGas(ctx, s.b, args, rpc.PendingBlockNumber, s.b.RPCGasCap())
blockNrOrHash := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber)
return DoEstimateGas(ctx, s.b, args, blockNrOrHash, s.b.RPCGasCap())
}
// ExecutionResult groups all structured logs emitted by the EVM
@@ -1224,9 +1225,9 @@ func (s *PublicTransactionPoolAPI) GetRawTransactionByBlockHashAndIndex(ctx cont
}
// GetTransactionCount returns the number of transactions the given address has sent for the given block number
func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (*hexutil.Uint64, error) {
func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, address common.Address, blockNrOrHash rpc.BlockNumberOrHash) (*hexutil.Uint64, error) {
// Ask transaction pool for the nonce which includes pending transactions
if blockNr == rpc.PendingBlockNumber {
if blockNr, ok := blockNrOrHash.Number(); ok && blockNr == rpc.PendingBlockNumber {
nonce, err := s.b.GetPoolNonce(ctx, address)
if err != nil {
return nil, err
@@ -1234,7 +1235,7 @@ func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, addr
return (*hexutil.Uint64)(&nonce), nil
}
// Resolve block number and use its state to ask for the nonce
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
state, _, err := s.b.StateAndHeaderByNumberOrHash(ctx, blockNrOrHash)
if state == nil || err != nil {
return nil, err
}
@@ -1405,7 +1406,8 @@ func (args *SendTxArgs) setDefaults(ctx context.Context, b Backend) error {
Value: args.Value,
Data: input,
}
estimated, err := DoEstimateGas(ctx, b, callArgs, rpc.PendingBlockNumber, b.RPCGasCap())
pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber)
estimated, err := DoEstimateGas(ctx, b, callArgs, pendingBlockNr, b.RPCGasCap())
if err != nil {
return err
}

3
internal/ethapi/backend.go
View File

@@ -52,9 +52,12 @@ type Backend interface {
SetHead(number uint64)
HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error)
HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error)
HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error)
BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error)
BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)
BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error)
StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error)
StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error)
GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error)
GetTd(hash common.Hash) *big.Int
GetEVM(ctx context.Context, msg core.Message, state *state.StateDB, header *types.Header) (*vm.EVM, func() error, error)

57
les/api_backend.go
View File

@@ -65,6 +65,26 @@ func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumb
return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(number))
}
func (b *LesApiBackend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.HeaderByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header, err := b.HeaderByHash(ctx, hash)
if err != nil {
return nil, err
}
if header == nil {
return nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
return header, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
return b.eth.blockchain.GetHeaderByHash(hash), nil
}
@@ -81,6 +101,26 @@ func (b *LesApiBackend) BlockByHash(ctx context.Context, hash common.Hash) (*typ
return b.eth.blockchain.GetBlockByHash(ctx, hash)
}
func (b *LesApiBackend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.BlockByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
block, err := b.BlockByHash(ctx, hash)
if err != nil {
return nil, err
}
if block == nil {
return nil, errors.New("header found, but block body is missing")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(block.NumberU64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
return block, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
header, err := b.HeaderByNumber(ctx, number)
if err != nil {
@@ -92,6 +132,23 @@ func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.B
return light.NewState(ctx, header, b.eth.odr), header, nil
}
func (b *LesApiBackend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.StateAndHeaderByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header := b.eth.blockchain.GetHeaderByHash(hash)
if header == nil {
return nil, nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.eth.blockchain.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, nil, errors.New("hash is not currently canonical")
}
return light.NewState(ctx, header, b.eth.odr), header, nil
}
return nil, nil, errors.New("invalid arguments; neither block nor hash specified")
}
func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
if number := rawdb.ReadHeaderNumber(b.eth.chainDb, hash); number != nil {
return light.GetBlockReceipts(ctx, b.eth.odr, hash, *number)

5
light/lightchain.go
View File

@@ -426,6 +426,11 @@ func (lc *LightChain) HasHeader(hash common.Hash, number uint64) bool {
return lc.hc.HasHeader(hash, number)
}
// GetCanonicalHash returns the canonical hash for a given block number
func (bc *LightChain) GetCanonicalHash(number uint64) common.Hash {
return bc.hc.GetCanonicalHash(number)
}
// GetBlockHashesFromHash retrieves a number of block hashes starting at a given
// hash, fetching towards the genesis block.
func (lc *LightChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash {

93
rpc/types.go
View File

@@ -18,10 +18,12 @@ package rpc
import (
"context"
"encoding/json"
"fmt"
"math"
"strings"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
)
@@ -105,3 +107,94 @@ func (bn *BlockNumber) UnmarshalJSON(data []byte) error {
func (bn BlockNumber) Int64() int64 {
return (int64)(bn)
}
type BlockNumberOrHash struct {
BlockNumber *BlockNumber `json:"blockNumber,omitempty"`
BlockHash *common.Hash `json:"blockHash,omitempty"`
RequireCanonical bool `json:"requireCanonical,omitempty"`
}
func (bnh *BlockNumberOrHash) UnmarshalJSON(data []byte) error {
type erased BlockNumberOrHash
e := erased{}
err := json.Unmarshal(data, &e)
if err == nil {
if e.BlockNumber != nil && e.BlockHash != nil {
return fmt.Errorf("cannot specify both BlockHash and BlockNumber, choose one or the other")
}
bnh.BlockNumber = e.BlockNumber
bnh.BlockHash = e.BlockHash
bnh.RequireCanonical = e.RequireCanonical
return nil
}
var input string
err = json.Unmarshal(data, &input)
if err != nil {
return err
}
switch input {
case "earliest":
bn := EarliestBlockNumber
bnh.BlockNumber = &bn
return nil
case "latest":
bn := LatestBlockNumber
bnh.BlockNumber = &bn
return nil
case "pending":
bn := PendingBlockNumber
bnh.BlockNumber = &bn
return nil
default:
if len(input) == 66 {
hash := common.Hash{}
err := hash.UnmarshalText([]byte(input))
if err != nil {
return err
}
bnh.BlockHash = &hash
return nil
} else {
blckNum, err := hexutil.DecodeUint64(input)
if err != nil {
return err
}
if blckNum > math.MaxInt64 {
return fmt.Errorf("blocknumber too high")
}
bn := BlockNumber(blckNum)
bnh.BlockNumber = &bn
return nil
}
}
}
func (bnh *BlockNumberOrHash) Number() (BlockNumber, bool) {
if bnh.BlockNumber != nil {
return *bnh.BlockNumber, true
}
return BlockNumber(0), false
}
func (bnh *BlockNumberOrHash) Hash() (common.Hash, bool) {
if bnh.BlockHash != nil {
return *bnh.BlockHash, true
}
return common.Hash{}, false
}
func BlockNumberOrHashWithNumber(blockNr BlockNumber) BlockNumberOrHash {
return BlockNumberOrHash{
BlockNumber: &blockNr,
BlockHash: nil,
RequireCanonical: false,
}
}
func BlockNumberOrHashWithHash(hash common.Hash, canonical bool) BlockNumberOrHash {
return BlockNumberOrHash{
BlockNumber: nil,
BlockHash: &hash,
RequireCanonical: canonical,
}
}

58
rpc/types_test.go
View File

@@ -20,6 +20,7 @@ import (
"encoding/json"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
)
@@ -64,3 +65,60 @@ func TestBlockNumberJSONUnmarshal(t *testing.T) {
}
}
}
func TestBlockNumberOrHash_UnmarshalJSON(t *testing.T) {
tests := []struct {
input string
mustFail bool
expected BlockNumberOrHash
}{
0: {`"0x"`, true, BlockNumberOrHash{}},
1: {`"0x0"`, false, BlockNumberOrHashWithNumber(0)},
2: {`"0X1"`, false, BlockNumberOrHashWithNumber(1)},
3: {`"0x00"`, true, BlockNumberOrHash{}},
4: {`"0x01"`, true, BlockNumberOrHash{}},
5: {`"0x1"`, false, BlockNumberOrHashWithNumber(1)},
6: {`"0x12"`, false, BlockNumberOrHashWithNumber(18)},
7: {`"0x7fffffffffffffff"`, false, BlockNumberOrHashWithNumber(math.MaxInt64)},
8: {`"0x8000000000000000"`, true, BlockNumberOrHash{}},
9: {"0", true, BlockNumberOrHash{}},
10: {`"ff"`, true, BlockNumberOrHash{}},
11: {`"pending"`, false, BlockNumberOrHashWithNumber(PendingBlockNumber)},
12: {`"latest"`, false, BlockNumberOrHashWithNumber(LatestBlockNumber)},
13: {`"earliest"`, false, BlockNumberOrHashWithNumber(EarliestBlockNumber)},
14: {`someString`, true, BlockNumberOrHash{}},
15: {`""`, true, BlockNumberOrHash{}},
16: {``, true, BlockNumberOrHash{}},
17: {`"0x0000000000000000000000000000000000000000000000000000000000000000"`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), false)},
18: {`{"blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000"}`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), false)},
19: {`{"blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000","requireCanonical":false}`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), false)},
20: {`{"blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000","requireCanonical":true}`, false, BlockNumberOrHashWithHash(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000"), true)},
21: {`{"blockNumber":"0x1"}`, false, BlockNumberOrHashWithNumber(1)},
22: {`{"blockNumber":"pending"}`, false, BlockNumberOrHashWithNumber(PendingBlockNumber)},
23: {`{"blockNumber":"latest"}`, false, BlockNumberOrHashWithNumber(LatestBlockNumber)},
24: {`{"blockNumber":"earliest"}`, false, BlockNumberOrHashWithNumber(EarliestBlockNumber)},
25: {`{"blockNumber":"0x1", "blockHash":"0x0000000000000000000000000000000000000000000000000000000000000000"}`, true, BlockNumberOrHash{}},
}
for i, test := range tests {
var bnh BlockNumberOrHash
err := json.Unmarshal([]byte(test.input), &bnh)
if test.mustFail && err == nil {
t.Errorf("Test %d should fail", i)
continue
}
if !test.mustFail && err != nil {
t.Errorf("Test %d should pass but got err: %v", i, err)
continue
}
hash, hashOk := bnh.Hash()
expectedHash, expectedHashOk := test.expected.Hash()
num, numOk := bnh.Number()
expectedNum, expectedNumOk := test.expected.Number()
if bnh.RequireCanonical != test.expected.RequireCanonical ||
hash != expectedHash || hashOk != expectedHashOk ||
num != expectedNum || numOk != expectedNumOk {
t.Errorf("Test %d got unexpected value, want %v, got %v", i, test.expected, bnh)
}
}
}