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eth, internal, les: add getHeaderBy* APIs (#19669) 

* eth, interal, les: add getHeaderBy* APIs

* internal: address the comment

* eth, internal, les: getHeader nits, missing TD, console callable
This commit is contained in:
gary rong 2019-07-23 21:52:24 +08:00 committed by Péter Szilágyi
parent 57d9c93dcd
commit 530f78e22d
5 changed files with 126 additions and 55 deletions
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26
eth/api_backend.go
View File

@ -59,44 +59,44 @@ func (b *EthAPIBackend) SetHead(number uint64) {
b.eth.blockchain.SetHead(number)
}
func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) {
func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
// Pending block is only known by the miner
if blockNr == rpc.PendingBlockNumber {
if number == rpc.PendingBlockNumber {
block := b.eth.miner.PendingBlock()
return block.Header(), nil
}
// Otherwise resolve and return the block
if blockNr == rpc.LatestBlockNumber {
if number == rpc.LatestBlockNumber {
return b.eth.blockchain.CurrentBlock().Header(), nil
}
return b.eth.blockchain.GetHeaderByNumber(uint64(blockNr)), nil
return b.eth.blockchain.GetHeaderByNumber(uint64(number)), nil
}
func (b *EthAPIBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
return b.eth.blockchain.GetHeaderByHash(hash), nil
}
func (b *EthAPIBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) {
func (b *EthAPIBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
// Pending block is only known by the miner
if blockNr == rpc.PendingBlockNumber {
if number == rpc.PendingBlockNumber {
block := b.eth.miner.PendingBlock()
return block, nil
}
// Otherwise resolve and return the block
if blockNr == rpc.LatestBlockNumber {
if number == rpc.LatestBlockNumber {
return b.eth.blockchain.CurrentBlock(), nil
}
return b.eth.blockchain.GetBlockByNumber(uint64(blockNr)), nil
return b.eth.blockchain.GetBlockByNumber(uint64(number)), nil
}
func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
// Pending state is only known by the miner
if blockNr == rpc.PendingBlockNumber {
if number == rpc.PendingBlockNumber {
block, state := b.eth.miner.Pending()
return state, block.Header(), nil
}
// Otherwise resolve the block number and return its state
header, err := b.HeaderByNumber(ctx, blockNr)
header, err := b.HeaderByNumber(ctx, number)
if err != nil {
return nil, nil, err
}
@ -107,6 +107,10 @@ func (b *EthAPIBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.
return stateDb, header, err
}
func (b *EthAPIBackend) GetHeader(ctx context.Context, hash common.Hash) *types.Header {
return b.eth.blockchain.GetHeaderByHash(hash)
}
func (b *EthAPIBackend) GetBlock(ctx context.Context, hash common.Hash) (*types.Block, error) {
return b.eth.blockchain.GetBlockByHash(hash), nil
}

94
internal/ethapi/api.go
View File

@ -616,13 +616,43 @@ func (s *PublicBlockChainAPI) GetProof(ctx context.Context, address common.Addre
}, state.Error()
}
// GetBlockByNumber returns the requested block. When blockNr is -1 the chain head is returned. When fullTx is true all
// transactions in the block are returned in full detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, blockNr rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) {
block, err := s.b.BlockByNumber(ctx, blockNr)
if block != nil {
response, err := s.rpcOutputBlock(block, true, fullTx)
if err == nil && blockNr == rpc.PendingBlockNumber {
// GetHeaderByNumber returns the requested canonical block header.
// * When blockNr is -1 the chain head is returned.
// * When blockNr is -2 the pending chain head is returned.
func (s *PublicBlockChainAPI) GetHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (map[string]interface{}, error) {
header, err := s.b.HeaderByNumber(ctx, number)
if header != nil && err == nil {
response := s.rpcMarshalHeader(header)
if number == rpc.PendingBlockNumber {
// Pending header need to nil out a few fields
for _, field := range []string{"hash", "nonce", "miner"} {
response[field] = nil
}
}
return response, err
}
return nil, err
}
// GetHeaderByHash returns the requested header by hash.
func (s *PublicBlockChainAPI) GetHeaderByHash(ctx context.Context, hash common.Hash) map[string]interface{} {
header := s.b.GetHeader(ctx, hash)
if header != nil {
return s.rpcMarshalHeader(header)
}
return nil
}
// GetBlockByNumber returns the requested canonical block.
// * When blockNr is -1 the chain head is returned.
// * When blockNr is -2 the pending chain head is returned.
// * When fullTx is true all transactions in the block are returned, otherwise
// only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, number rpc.BlockNumber, fullTx bool) (map[string]interface{}, error) {
block, err := s.b.BlockByNumber(ctx, number)
if block != nil && err == nil {
response, err := s.rpcMarshalBlock(block, true, fullTx)
if err == nil && number == rpc.PendingBlockNumber {
// Pending blocks need to nil out a few fields
for _, field := range []string{"hash", "nonce", "miner"} {
response[field] = nil
@ -635,10 +665,10 @@ func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, blockNr rpc.
// GetBlockByHash returns the requested block. When fullTx is true all transactions in the block are returned in full
// detail, otherwise only the transaction hash is returned.
func (s *PublicBlockChainAPI) GetBlockByHash(ctx context.Context, blockHash common.Hash, fullTx bool) (map[string]interface{}, error) {
block, err := s.b.GetBlock(ctx, blockHash)
func (s *PublicBlockChainAPI) GetBlockByHash(ctx context.Context, hash common.Hash, fullTx bool) (map[string]interface{}, error) {
block, err := s.b.GetBlock(ctx, hash)
if block != nil {
return s.rpcOutputBlock(block, true, fullTx)
return s.rpcMarshalBlock(block, true, fullTx)
}
return nil, err
}
@ -654,7 +684,7 @@ func (s *PublicBlockChainAPI) GetUncleByBlockNumberAndIndex(ctx context.Context,
return nil, nil
}
block = types.NewBlockWithHeader(uncles[index])
return s.rpcOutputBlock(block, false, false)
return s.rpcMarshalBlock(block, false, false)
}
return nil, err
}
@ -670,7 +700,7 @@ func (s *PublicBlockChainAPI) GetUncleByBlockHashAndIndex(ctx context.Context, b
return nil, nil
}
block = types.NewBlockWithHeader(uncles[index])
return s.rpcOutputBlock(block, false, false)
return s.rpcMarshalBlock(block, false, false)
}
return nil, err
}
@ -933,14 +963,11 @@ func FormatLogs(logs []vm.StructLog) []StructLogRes {
return formatted
}
// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
// transaction hashes.
func RPCMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
head := b.Header() // copies the header once
fields := map[string]interface{}{
// RPCMarshalHeader converts the given header to the RPC output .
func RPCMarshalHeader(head *types.Header) map[string]interface{} {
return map[string]interface{}{
"number": (*hexutil.Big)(head.Number),
"hash": b.Hash(),
"hash": head.Hash(),
"parentHash": head.ParentHash,
"nonce": head.Nonce,
"mixHash": head.MixDigest,
@ -950,13 +977,21 @@ func RPCMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]inter
"miner": head.Coinbase,
"difficulty": (*hexutil.Big)(head.Difficulty),
"extraData": hexutil.Bytes(head.Extra),
"size": hexutil.Uint64(b.Size()),
"size": hexutil.Uint64(head.Size()),
"gasLimit": hexutil.Uint64(head.GasLimit),
"gasUsed": hexutil.Uint64(head.GasUsed),
"timestamp": hexutil.Uint64(head.Time),
"transactionsRoot": head.TxHash,
"receiptsRoot": head.ReceiptHash,
}
}
// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
// transaction hashes.
func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
fields := RPCMarshalHeader(block.Header())
fields["size"] = block.Size()
if inclTx {
formatTx := func(tx *types.Transaction) (interface{}, error) {
@ -964,10 +999,10 @@ func RPCMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]inter
}
if fullTx {
formatTx = func(tx *types.Transaction) (interface{}, error) {
return newRPCTransactionFromBlockHash(b, tx.Hash()), nil
return newRPCTransactionFromBlockHash(block, tx.Hash()), nil
}
}
txs := b.Transactions()
txs := block.Transactions()
transactions := make([]interface{}, len(txs))
var err error
for i, tx := range txs {
@ -977,8 +1012,7 @@ func RPCMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]inter
}
fields["transactions"] = transactions
}
uncles := b.Uncles()
uncles := block.Uncles()
uncleHashes := make([]common.Hash, len(uncles))
for i, uncle := range uncles {
uncleHashes[i] = uncle.Hash()
@ -988,9 +1022,17 @@ func RPCMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]inter
return fields, nil
}
// rpcOutputBlock uses the generalized output filler, then adds the total difficulty field, which requires
// rpcMarshalHeader uses the generalized output filler, then adds the total difficulty field, which requires
// a `PublicBlockchainAPI`.
func (s *PublicBlockChainAPI) rpcOutputBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
func (s *PublicBlockChainAPI) rpcMarshalHeader(header *types.Header) map[string]interface{} {
fields := RPCMarshalHeader(header)
fields["totalDifficulty"] = (*hexutil.Big)(s.b.GetTd(header.Hash()))
return fields
}
// rpcMarshalBlock uses the generalized output filler, then adds the total difficulty field, which requires
// a `PublicBlockchainAPI`.
func (s *PublicBlockChainAPI) rpcMarshalBlock(b *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
fields, err := RPCMarshalBlock(b, inclTx, fullTx)
if err != nil {
return nil, err

15
internal/ethapi/backend.go
View File

@ -50,13 +50,14 @@ type Backend interface {
// Blockchain API
SetHead(number uint64)
HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error)
HeaderByHash(ctx context.Context, blockHash common.Hash) (*types.Header, error)
BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error)
StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error)
GetBlock(ctx context.Context, blockHash common.Hash) (*types.Block, error)
GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error)
GetTd(blockHash common.Hash) *big.Int
HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error)
HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error)
BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error)
StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error)
GetHeader(ctx context.Context, hash common.Hash) *types.Header
GetBlock(ctx context.Context, hash common.Hash) (*types.Block, 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)
SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription
SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription

20
internal/web3ext/web3ext.go
View File

@ -483,6 +483,26 @@ web3._extend({
params: 1,
inputFormatter: [web3._extend.formatters.inputTransactionFormatter]
}),
new web3._extend.Method({
name: 'getHeaderByNumber',
call: 'eth_getHeaderByNumber',
params: 1
}),
new web3._extend.Method({
name: 'getHeaderByHash',
call: 'eth_getHeaderByHash',
params: 1
}),
new web3._extend.Method({
name: 'getBlockByNumber',
call: 'eth_getBlockByNumber',
params: 2
}),
new web3._extend.Method({
name: 'getBlockByHash',
call: 'eth_getBlockByHash',
params: 2
}),
new web3._extend.Method({
name: 'getRawTransaction',
call: 'eth_getRawTransactionByHash',

22
les/api_backend.go
View File

@ -58,27 +58,27 @@ func (b *LesApiBackend) SetHead(number uint64) {
b.eth.blockchain.SetHead(number)
}
func (b *LesApiBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error) {
if blockNr == rpc.LatestBlockNumber || blockNr == rpc.PendingBlockNumber {
func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
if number == rpc.LatestBlockNumber || number == rpc.PendingBlockNumber {
return b.eth.blockchain.CurrentHeader(), nil
}
return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(blockNr))
return b.eth.blockchain.GetHeaderByNumberOdr(ctx, uint64(number))
}
func (b *LesApiBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
return b.eth.blockchain.GetHeaderByHash(hash), nil
}
func (b *LesApiBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Block, error) {
header, err := b.HeaderByNumber(ctx, blockNr)
func (b *LesApiBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Block, error) {
header, err := b.HeaderByNumber(ctx, number)
if header == nil || err != nil {
return nil, err
}
return b.GetBlock(ctx, header.Hash())
}
func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
header, err := b.HeaderByNumber(ctx, blockNr)
func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
header, err := b.HeaderByNumber(ctx, number)
if err != nil {
return nil, nil, err
}
@ -88,8 +88,12 @@ func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.
return light.NewState(ctx, header, b.eth.odr), header, nil
}
func (b *LesApiBackend) GetBlock(ctx context.Context, blockHash common.Hash) (*types.Block, error) {
return b.eth.blockchain.GetBlockByHash(ctx, blockHash)
func (b *LesApiBackend) GetHeader(ctx context.Context, hash common.Hash) *types.Header {
return b.eth.blockchain.GetHeaderByHash(hash)
}
func (b *LesApiBackend) GetBlock(ctx context.Context, hash common.Hash) (*types.Block, error) {
return b.eth.blockchain.GetBlockByHash(ctx, hash)
}
func (b *LesApiBackend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {