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Merge pull request #2154 from karalabe/rpc-fixes

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cmd, eth, rpc: fix some RPC issues with pending blocks
This commit is contained in:
Péter Szilágyi 2016-02-03 10:50:34 +02:00
commit fbbedb4c03
5 changed files with 110 additions and 117 deletions
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4
cmd/gethrpctest/main.go
View File

@ -52,6 +52,10 @@ var (
func main() {
flag.Parse()
// Enable logging errors, we really do want to see those
glog.SetV(2)
glog.SetToStderr(true)
// Load the test suite to run the RPC against
tests, err := tests.LoadBlockTests(*testFile)
if err != nil {

204
eth/api.go
View File

@ -53,19 +53,40 @@ const (
defaultGas = uint64(90000)
)
// blockByNumber is a commonly used helper function which retrieves and returns the block for the given block number. It
// returns nil when no block could be found.
// blockByNumber is a commonly used helper function which retrieves and returns
// the block for the given block number, capable of handling two special blocks:
// rpc.LatestBlockNumber adn rpc.PendingBlockNumber. It returns nil when no block
// could be found.
func blockByNumber(m *miner.Miner, bc *core.BlockChain, blockNr rpc.BlockNumber) *types.Block {
// Pending block is only known by the miner
if blockNr == rpc.PendingBlockNumber {
return m.PendingBlock()
}
// Otherwise resolve and return the block
if blockNr == rpc.LatestBlockNumber {
return bc.CurrentBlock()
}
return bc.GetBlockByNumber(uint64(blockNr))
}
// stateAndBlockByNumber is a commonly used helper function which retrieves and
// returns the state and containing block for the given block number, capable of
// handling two special states: rpc.LatestBlockNumber adn rpc.PendingBlockNumber.
// It returns nil when no block or state could be found.
func stateAndBlockByNumber(m *miner.Miner, bc *core.BlockChain, blockNr rpc.BlockNumber, chainDb ethdb.Database) (*state.StateDB, *types.Block, error) {
// Pending state is only known by the miner
if blockNr == rpc.PendingBlockNumber {
return m.PendingState(), m.PendingBlock(), nil
}
// Otherwise resolve the block number and return its state
block := blockByNumber(m, bc, blockNr)
if block == nil {
return nil, nil, nil
}
stateDb, err := state.New(block.Root(), chainDb)
return stateDb, block, err
}
// PublicEthereumAPI provides an API to access Ethereum related information.
// It offers only methods that operate on public data that is freely available to anyone.
type PublicEthereumAPI struct {
@ -395,16 +416,12 @@ func (s *PublicBlockChainAPI) BlockNumber() *big.Int {
return s.bc.CurrentHeader().Number
}
// GetBalance returns the amount of wei for the given address in the state of the given block number.
// When block number equals rpc.LatestBlockNumber the current block is used.
// 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(address common.Address, blockNr rpc.BlockNumber) (*big.Int, error) {
block := blockByNumber(s.miner, s.bc, blockNr)
if block == nil {
return nil, nil
}
state, err := state.New(block.Root(), s.chainDb)
if err != nil {
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return nil, err
}
return state.GetBalance(address), nil
@ -414,7 +431,14 @@ func (s *PublicBlockChainAPI) GetBalance(address common.Address, blockNr rpc.Blo
// transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetBlockByNumber(blockNr rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
return s.rpcOutputBlock(block, true, fullTx)
response, err := s.rpcOutputBlock(block, true, fullTx)
if err == nil && blockNr == rpc.PendingBlockNumber {
// Pending blocks need to nil out a few fields
for _, field := range []string{"hash", "nonce", "logsBloom", "miner"} {
response[field] = nil
}
}
return response, err
}
return nil, nil
}
@ -431,10 +455,6 @@ func (s *PublicBlockChainAPI) GetBlockByHash(blockHash common.Hash, fullTx bool)
// GetUncleByBlockNumberAndIndex returns the uncle block for the given block hash and index. When fullTx is true
// all transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetUncleByBlockNumberAndIndex(blockNr rpc.BlockNumber, index rpc.HexNumber) (map[string]interface{}, error) {
if blockNr == rpc.PendingBlockNumber {
return nil, nil
}
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
uncles := block.Uncles()
if index.Int() < 0 || index.Int() >= len(uncles) {
@ -464,10 +484,6 @@ func (s *PublicBlockChainAPI) GetUncleByBlockHashAndIndex(blockHash common.Hash,
// GetUncleCountByBlockNumber returns number of uncles in the block for the given block number
func (s *PublicBlockChainAPI) GetUncleCountByBlockNumber(blockNr rpc.BlockNumber) *rpc.HexNumber {
if blockNr == rpc.PendingBlockNumber {
return rpc.NewHexNumber(0)
}
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
return rpc.NewHexNumber(len(block.Uncles()))
}
@ -508,38 +524,26 @@ func (s *PublicBlockChainAPI) NewBlocks(args NewBlocksArgs) (rpc.Subscription, e
// GetCode returns the code stored at the given address in the state for the given block number.
func (s *PublicBlockChainAPI) GetCode(address common.Address, blockNr rpc.BlockNumber) (string, error) {
return s.GetData(address, blockNr)
}
// GetData returns the data stored at the given address in the state for the given block number.
func (s *PublicBlockChainAPI) GetData(address common.Address, blockNr rpc.BlockNumber) (string, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
state, err := state.New(block.Root(), s.chainDb)
if err != nil {
return "", err
}
res := state.GetCode(address)
if len(res) == 0 { // backwards compatibility
return "0x", nil
}
return common.ToHex(res), nil
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return "", err
}
return "0x", nil
res := state.GetCode(address)
if len(res) == 0 { // backwards compatibility
return "0x", nil
}
return common.ToHex(res), nil
}
// GetStorageAt returns the storage from the state at the given address, key and block number.
// 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(address common.Address, key string, blockNr rpc.BlockNumber) (string, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
state, err := state.New(block.Root(), s.chainDb)
if err != nil {
return "", err
}
return state.GetState(address, common.HexToHash(key)).Hex(), nil
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return "0x", err
}
return "0x", nil
return state.GetState(address, common.HexToHash(key)).Hex(), nil
}
// callmsg is the message type used for call transations.
@ -570,55 +574,51 @@ type CallArgs struct {
}
func (s *PublicBlockChainAPI) doCall(args CallArgs, blockNr rpc.BlockNumber) (string, *big.Int, error) {
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
stateDb, err := state.New(block.Root(), s.chainDb)
if err != nil {
return "0x", nil, err
}
stateDb = stateDb.Copy()
var from *state.StateObject
if args.From == (common.Address{}) {
accounts, err := s.am.Accounts()
if err != nil || len(accounts) == 0 {
from = stateDb.GetOrNewStateObject(common.Address{})
} else {
from = stateDb.GetOrNewStateObject(accounts[0].Address)
}
} else {
from = stateDb.GetOrNewStateObject(args.From)
}
from.SetBalance(common.MaxBig)
msg := callmsg{
from: from,
to: &args.To,
gas: args.Gas.BigInt(),
gasPrice: args.GasPrice.BigInt(),
value: args.Value.BigInt(),
data: common.FromHex(args.Data),
}
if msg.gas.Cmp(common.Big0) == 0 {
msg.gas = big.NewInt(50000000)
}
if msg.gasPrice.Cmp(common.Big0) == 0 {
msg.gasPrice = new(big.Int).Mul(big.NewInt(50), common.Shannon)
}
header := s.bc.CurrentBlock().Header()
vmenv := core.NewEnv(stateDb, s.bc, msg, header)
gp := new(core.GasPool).AddGas(common.MaxBig)
res, gas, err := core.ApplyMessage(vmenv, msg, gp)
if len(res) == 0 { // backwards compatability
return "0x", gas, err
}
return common.ToHex(res), gas, err
// Fetch the state associated with the block number
stateDb, block, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if stateDb == nil || err != nil {
return "0x", nil, err
}
stateDb = stateDb.Copy()
return "0x", common.Big0, nil
// Retrieve the account state object to interact with
var from *state.StateObject
if args.From == (common.Address{}) {
accounts, err := s.am.Accounts()
if err != nil || len(accounts) == 0 {
from = stateDb.GetOrNewStateObject(common.Address{})
} else {
from = stateDb.GetOrNewStateObject(accounts[0].Address)
}
} else {
from = stateDb.GetOrNewStateObject(args.From)
}
from.SetBalance(common.MaxBig)
// Assemble the CALL invocation
msg := callmsg{
from: from,
to: &args.To,
gas: args.Gas.BigInt(),
gasPrice: args.GasPrice.BigInt(),
value: args.Value.BigInt(),
data: common.FromHex(args.Data),
}
if msg.gas.Cmp(common.Big0) == 0 {
msg.gas = big.NewInt(50000000)
}
if msg.gasPrice.Cmp(common.Big0) == 0 {
msg.gasPrice = new(big.Int).Mul(big.NewInt(50), common.Shannon)
}
// Execute the call and return
vmenv := core.NewEnv(stateDb, s.bc, msg, block.Header())
gp := new(core.GasPool).AddGas(common.MaxBig)
res, gas, err := core.ApplyMessage(vmenv, msg, gp)
if len(res) == 0 { // backwards compatibility
return "0x", gas, err
}
return common.ToHex(res), gas, err
}
// Call executes the given transaction on the state for the given block number.
@ -802,14 +802,9 @@ func getTransaction(chainDb ethdb.Database, txPool *core.TxPool, txHash common.H
// GetBlockTransactionCountByNumber returns the number of transactions in the block with the given block number.
func (s *PublicTransactionPoolAPI) GetBlockTransactionCountByNumber(blockNr rpc.BlockNumber) *rpc.HexNumber {
if blockNr == rpc.PendingBlockNumber {
return rpc.NewHexNumber(0)
}
if block := blockByNumber(s.miner, s.bc, blockNr); block != nil {
return rpc.NewHexNumber(len(block.Transactions()))
}
return nil
}
@ -839,13 +834,8 @@ func (s *PublicTransactionPoolAPI) GetTransactionByBlockHashAndIndex(blockHash c
// GetTransactionCount returns the number of transactions the given address has sent for the given block number
func (s *PublicTransactionPoolAPI) GetTransactionCount(address common.Address, blockNr rpc.BlockNumber) (*rpc.HexNumber, error) {
block := blockByNumber(s.miner, s.bc, blockNr)
if block == nil {
return nil, nil
}
state, err := state.New(block.Root(), s.chainDb)
if err != nil {
state, _, err := stateAndBlockByNumber(s.miner, s.bc, blockNr, s.chainDb)
if state == nil || err != nil {
return nil, err
}
return rpc.NewHexNumber(state.GetNonce(address)), nil

4
eth/filters/api.go
View File

@ -239,13 +239,13 @@ func (args *NewFilterArgs) UnmarshalJSON(data []byte) error {
return err
}
if raw.From == nil {
if raw.From == nil || raw.From.Int64() < 0 {
args.FromBlock = rpc.LatestBlockNumber
} else {
args.FromBlock = *raw.From
}
if raw.ToBlock == nil {
if raw.ToBlock == nil || raw.ToBlock.Int64() < 0 {
args.ToBlock = rpc.LatestBlockNumber
} else {
args.ToBlock = *raw.ToBlock

2
rpc/server.go
View File

@ -332,7 +332,6 @@ func (s *Server) handle(ctx context.Context, codec ServerCodec, req *serverReque
return res
}
}
return codec.CreateResponse(req.id, reply[0].Interface())
}
@ -344,7 +343,6 @@ func (s *Server) exec(ctx context.Context, codec ServerCodec, req *serverRequest
} else {
response = s.handle(ctx, codec, req)
}
if err := codec.Write(response); err != nil {
glog.V(logger.Error).Infof("%v\n", err)
codec.Close()

13
rpc/types.go
View File

@ -174,12 +174,14 @@ type HexNumber big.Int
// NewHexNumber creates a new hex number instance which will serialize the given val with `%#x` on marshal.
func NewHexNumber(val interface{}) *HexNumber {
if val == nil {
return nil
return nil // note, this doesn't catch nil pointers, only passing nil directly!
}
if v, ok := val.(*big.Int); ok && v != nil {
hn := new(big.Int).Set(v)
return (*HexNumber)(hn)
if v, ok := val.(*big.Int); ok {
if v != nil {
return (*HexNumber)(new(big.Int).Set(v))
}
return nil
}
rval := reflect.ValueOf(val)
@ -303,10 +305,9 @@ const (
)
// UnmarshalJSON parses the given JSON fragement into a BlockNumber. It supports:
// - "latest" or "earliest" as string arguments
// - "latest", "earliest" or "pending" as string arguments
// - the block number
// Returned errors:
// - an unsupported error when "pending" is specified (not yet implemented)
// - an invalid block number error when the given argument isn't a known strings
// - an out of range error when the given block number is either too little or too large
func (bn *BlockNumber) UnmarshalJSON(data []byte) error {