gitee.com/liu-zhao234568/cntest@v1.0.0/ethclient/ethclient.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // Package ethclient provides a client for the Ethereum RPC API.
    18  package ethclient
    19  
    20  import (
    21  	"context"
    22  	"encoding/json"
    23  	"errors"
    24  	"fmt"
    25  	"math/big"
    26  
    27  	ethereum "gitee.com/liu-zhao234568/cntest"
    28  	"gitee.com/liu-zhao234568/cntest/common"
    29  	"gitee.com/liu-zhao234568/cntest/common/hexutil"
    30  	"gitee.com/liu-zhao234568/cntest/core/types"
    31  	"gitee.com/liu-zhao234568/cntest/rpc"
    32  )
    33  
    34  // Client defines typed wrappers for the Ethereum RPC API.
    35  type Client struct {
    36  	c *rpc.Client
    37  }
    38  
    39  // Dial connects a client to the given URL.
    40  func Dial(rawurl string) (*Client, error) {
    41  	return DialContext(context.Background(), rawurl)
    42  }
    43  
    44  func DialContext(ctx context.Context, rawurl string) (*Client, error) {
    45  	c, err := rpc.DialContext(ctx, rawurl)
    46  	if err != nil {
    47  		return nil, err
    48  	}
    49  	return NewClient(c), nil
    50  }
    51  
    52  // NewClient creates a client that uses the given RPC client.
    53  func NewClient(c *rpc.Client) *Client {
    54  	return &Client{c}
    55  }
    56  
    57  func (ec *Client) Close() {
    58  	ec.c.Close()
    59  }
    60  
    61  // Blockchain Access
    62  
    63  // ChainId retrieves the current chain ID for transaction replay protection.
    64  func (ec *Client) ChainID(ctx context.Context) (*big.Int, error) {
    65  	var result hexutil.Big
    66  	err := ec.c.CallContext(ctx, &result, "eth_chainId")
    67  	if err != nil {
    68  		return nil, err
    69  	}
    70  	return (*big.Int)(&result), err
    71  }
    72  
    73  // BlockByHash returns the given full block.
    74  //
    75  // Note that loading full blocks requires two requests. Use HeaderByHash
    76  // if you don't need all transactions or uncle headers.
    77  func (ec *Client) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error) {
    78  	return ec.getBlock(ctx, "eth_getBlockByHash", hash, true)
    79  }
    80  
    81  // BlockByNumber returns a block from the current canonical chain. If number is nil, the
    82  // latest known block is returned.
    83  //
    84  // Note that loading full blocks requires two requests. Use HeaderByNumber
    85  // if you don't need all transactions or uncle headers.
    86  func (ec *Client) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) {
    87  	return ec.getBlock(ctx, "eth_getBlockByNumber", toBlockNumArg(number), true)
    88  }
    89  
    90  // BlockNumber returns the most recent block number
    91  func (ec *Client) BlockNumber(ctx context.Context) (uint64, error) {
    92  	var result hexutil.Uint64
    93  	err := ec.c.CallContext(ctx, &result, "eth_blockNumber")
    94  	return uint64(result), err
    95  }
    96  
    97  type rpcBlock struct {
    98  	Hash         common.Hash      `json:"hash"`
    99  	Transactions []rpcTransaction `json:"transactions"`
   100  	UncleHashes  []common.Hash    `json:"uncles"`
   101  }
   102  
   103  func (ec *Client) getBlock(ctx context.Context, method string, args ...interface{}) (*types.Block, error) {
   104  	var raw json.RawMessage
   105  	err := ec.c.CallContext(ctx, &raw, method, args...)
   106  	if err != nil {
   107  		return nil, err
   108  	} else if len(raw) == 0 {
   109  		return nil, ethereum.NotFound
   110  	}
   111  	// Decode header and transactions.
   112  	var head *types.Header
   113  	var body rpcBlock
   114  	if err := json.Unmarshal(raw, &head); err != nil {
   115  		return nil, err
   116  	}
   117  	if err := json.Unmarshal(raw, &body); err != nil {
   118  		return nil, err
   119  	}
   120  	// Quick-verify transaction and uncle lists. This mostly helps with debugging the server.
   121  	if head.UncleHash == types.EmptyUncleHash && len(body.UncleHashes) > 0 {
   122  		return nil, fmt.Errorf("server returned non-empty uncle list but block header indicates no uncles")
   123  	}
   124  	if head.UncleHash != types.EmptyUncleHash && len(body.UncleHashes) == 0 {
   125  		return nil, fmt.Errorf("server returned empty uncle list but block header indicates uncles")
   126  	}
   127  	if head.TxHash == types.EmptyRootHash && len(body.Transactions) > 0 {
   128  		return nil, fmt.Errorf("server returned non-empty transaction list but block header indicates no transactions")
   129  	}
   130  	if head.TxHash != types.EmptyRootHash && len(body.Transactions) == 0 {
   131  		return nil, fmt.Errorf("server returned empty transaction list but block header indicates transactions")
   132  	}
   133  	// Load uncles because they are not included in the block response.
   134  	var uncles []*types.Header
   135  	if len(body.UncleHashes) > 0 {
   136  		uncles = make([]*types.Header, len(body.UncleHashes))
   137  		reqs := make([]rpc.BatchElem, len(body.UncleHashes))
   138  		for i := range reqs {
   139  			reqs[i] = rpc.BatchElem{
   140  				Method: "eth_getUncleByBlockHashAndIndex",
   141  				Args:   []interface{}{body.Hash, hexutil.EncodeUint64(uint64(i))},
   142  				Result: &uncles[i],
   143  			}
   144  		}
   145  		if err := ec.c.BatchCallContext(ctx, reqs); err != nil {
   146  			return nil, err
   147  		}
   148  		for i := range reqs {
   149  			if reqs[i].Error != nil {
   150  				return nil, reqs[i].Error
   151  			}
   152  			if uncles[i] == nil {
   153  				return nil, fmt.Errorf("got null header for uncle %d of block %x", i, body.Hash[:])
   154  			}
   155  		}
   156  	}
   157  	// Fill the sender cache of transactions in the block.
   158  	txs := make([]*types.Transaction, len(body.Transactions))
   159  	for i, tx := range body.Transactions {
   160  		if tx.From != nil {
   161  			setSenderFromServer(tx.tx, *tx.From, body.Hash)
   162  		}
   163  		txs[i] = tx.tx
   164  	}
   165  	return types.NewBlockWithHeader(head).WithBody(txs, uncles), nil
   166  }
   167  
   168  // HeaderByHash returns the block header with the given hash.
   169  func (ec *Client) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
   170  	var head *types.Header
   171  	err := ec.c.CallContext(ctx, &head, "eth_getBlockByHash", hash, false)
   172  	if err == nil && head == nil {
   173  		err = ethereum.NotFound
   174  	}
   175  	return head, err
   176  }
   177  
   178  // HeaderByNumber returns a block header from the current canonical chain. If number is
   179  // nil, the latest known header is returned.
   180  func (ec *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
   181  	var head *types.Header
   182  	err := ec.c.CallContext(ctx, &head, "eth_getBlockByNumber", toBlockNumArg(number), false)
   183  	if err == nil && head == nil {
   184  		err = ethereum.NotFound
   185  	}
   186  	return head, err
   187  }
   188  
   189  type rpcTransaction struct {
   190  	tx *types.Transaction
   191  	txExtraInfo
   192  }
   193  
   194  type txExtraInfo struct {
   195  	BlockNumber *string         `json:"blockNumber,omitempty"`
   196  	BlockHash   *common.Hash    `json:"blockHash,omitempty"`
   197  	From        *common.Address `json:"from,omitempty"`
   198  }
   199  
   200  func (tx *rpcTransaction) UnmarshalJSON(msg []byte) error {
   201  	if err := json.Unmarshal(msg, &tx.tx); err != nil {
   202  		return err
   203  	}
   204  	return json.Unmarshal(msg, &tx.txExtraInfo)
   205  }
   206  
   207  // TransactionByHash returns the transaction with the given hash.
   208  func (ec *Client) TransactionByHash(ctx context.Context, hash common.Hash) (tx *types.Transaction, isPending bool, err error) {
   209  	var json *rpcTransaction
   210  	err = ec.c.CallContext(ctx, &json, "eth_getTransactionByHash", hash)
   211  	if err != nil {
   212  		return nil, false, err
   213  	} else if json == nil {
   214  		return nil, false, ethereum.NotFound
   215  	} else if _, r, _ := json.tx.RawSignatureValues(); r == nil {
   216  		return nil, false, fmt.Errorf("server returned transaction without signature")
   217  	}
   218  	if json.From != nil && json.BlockHash != nil {
   219  		setSenderFromServer(json.tx, *json.From, *json.BlockHash)
   220  	}
   221  	return json.tx, json.BlockNumber == nil, nil
   222  }
   223  
   224  // TransactionSender returns the sender address of the given transaction. The transaction
   225  // must be known to the remote node and included in the blockchain at the given block and
   226  // index. The sender is the one derived by the protocol at the time of inclusion.
   227  //
   228  // There is a fast-path for transactions retrieved by TransactionByHash and
   229  // TransactionInBlock. Getting their sender address can be done without an RPC interaction.
   230  func (ec *Client) TransactionSender(ctx context.Context, tx *types.Transaction, block common.Hash, index uint) (common.Address, error) {
   231  	// Try to load the address from the cache.
   232  	sender, err := types.Sender(&senderFromServer{blockhash: block}, tx)
   233  	if err == nil {
   234  		return sender, nil
   235  	}
   236  	var meta struct {
   237  		Hash common.Hash
   238  		From common.Address
   239  	}
   240  	if err = ec.c.CallContext(ctx, &meta, "eth_getTransactionByBlockHashAndIndex", block, hexutil.Uint64(index)); err != nil {
   241  		return common.Address{}, err
   242  	}
   243  	if meta.Hash == (common.Hash{}) || meta.Hash != tx.Hash() {
   244  		return common.Address{}, errors.New("wrong inclusion block/index")
   245  	}
   246  	return meta.From, nil
   247  }
   248  
   249  // TransactionCount returns the total number of transactions in the given block.
   250  func (ec *Client) TransactionCount(ctx context.Context, blockHash common.Hash) (uint, error) {
   251  	var num hexutil.Uint
   252  	err := ec.c.CallContext(ctx, &num, "eth_getBlockTransactionCountByHash", blockHash)
   253  	return uint(num), err
   254  }
   255  
   256  // TransactionInBlock returns a single transaction at index in the given block.
   257  func (ec *Client) TransactionInBlock(ctx context.Context, blockHash common.Hash, index uint) (*types.Transaction, error) {
   258  	var json *rpcTransaction
   259  	err := ec.c.CallContext(ctx, &json, "eth_getTransactionByBlockHashAndIndex", blockHash, hexutil.Uint64(index))
   260  	if err != nil {
   261  		return nil, err
   262  	}
   263  	if json == nil {
   264  		return nil, ethereum.NotFound
   265  	} else if _, r, _ := json.tx.RawSignatureValues(); r == nil {
   266  		return nil, fmt.Errorf("server returned transaction without signature")
   267  	}
   268  	if json.From != nil && json.BlockHash != nil {
   269  		setSenderFromServer(json.tx, *json.From, *json.BlockHash)
   270  	}
   271  	return json.tx, err
   272  }
   273  
   274  // TransactionReceipt returns the receipt of a transaction by transaction hash.
   275  // Note that the receipt is not available for pending transactions.
   276  func (ec *Client) TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error) {
   277  	var r *types.Receipt
   278  	err := ec.c.CallContext(ctx, &r, "eth_getTransactionReceipt", txHash)
   279  	if err == nil {
   280  		if r == nil {
   281  			return nil, ethereum.NotFound
   282  		}
   283  	}
   284  	return r, err
   285  }
   286  
   287  type rpcProgress struct {
   288  	StartingBlock hexutil.Uint64
   289  	CurrentBlock  hexutil.Uint64
   290  	HighestBlock  hexutil.Uint64
   291  	PulledStates  hexutil.Uint64
   292  	KnownStates   hexutil.Uint64
   293  }
   294  
   295  // SyncProgress retrieves the current progress of the sync algorithm. If there's
   296  // no sync currently running, it returns nil.
   297  func (ec *Client) SyncProgress(ctx context.Context) (*ethereum.SyncProgress, error) {
   298  	var raw json.RawMessage
   299  	if err := ec.c.CallContext(ctx, &raw, "eth_syncing"); err != nil {
   300  		return nil, err
   301  	}
   302  	// Handle the possible response types
   303  	var syncing bool
   304  	if err := json.Unmarshal(raw, &syncing); err == nil {
   305  		return nil, nil // Not syncing (always false)
   306  	}
   307  	var progress *rpcProgress
   308  	if err := json.Unmarshal(raw, &progress); err != nil {
   309  		return nil, err
   310  	}
   311  	return &ethereum.SyncProgress{
   312  		StartingBlock: uint64(progress.StartingBlock),
   313  		CurrentBlock:  uint64(progress.CurrentBlock),
   314  		HighestBlock:  uint64(progress.HighestBlock),
   315  		PulledStates:  uint64(progress.PulledStates),
   316  		KnownStates:   uint64(progress.KnownStates),
   317  	}, nil
   318  }
   319  
   320  // SubscribeNewHead subscribes to notifications about the current blockchain head
   321  // on the given channel.
   322  func (ec *Client) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header) (ethereum.Subscription, error) {
   323  	return ec.c.EthSubscribe(ctx, ch, "newHeads")
   324  }
   325  
   326  // State Access
   327  
   328  // NetworkID returns the network ID (also known as the chain ID) for this chain.
   329  func (ec *Client) NetworkID(ctx context.Context) (*big.Int, error) {
   330  	version := new(big.Int)
   331  	var ver string
   332  	if err := ec.c.CallContext(ctx, &ver, "net_version"); err != nil {
   333  		return nil, err
   334  	}
   335  	if _, ok := version.SetString(ver, 10); !ok {
   336  		return nil, fmt.Errorf("invalid net_version result %q", ver)
   337  	}
   338  	return version, nil
   339  }
   340  
   341  // BalanceAt returns the wei balance of the given account.
   342  // The block number can be nil, in which case the balance is taken from the latest known block.
   343  func (ec *Client) BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error) {
   344  	var result hexutil.Big
   345  	err := ec.c.CallContext(ctx, &result, "eth_getBalance", account, toBlockNumArg(blockNumber))
   346  	return (*big.Int)(&result), err
   347  }
   348  
   349  // StorageAt returns the value of key in the contract storage of the given account.
   350  // The block number can be nil, in which case the value is taken from the latest known block.
   351  func (ec *Client) StorageAt(ctx context.Context, account common.Address, key common.Hash, blockNumber *big.Int) ([]byte, error) {
   352  	var result hexutil.Bytes
   353  	err := ec.c.CallContext(ctx, &result, "eth_getStorageAt", account, key, toBlockNumArg(blockNumber))
   354  	return result, err
   355  }
   356  
   357  // CodeAt returns the contract code of the given account.
   358  // The block number can be nil, in which case the code is taken from the latest known block.
   359  func (ec *Client) CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error) {
   360  	var result hexutil.Bytes
   361  	err := ec.c.CallContext(ctx, &result, "eth_getCode", account, toBlockNumArg(blockNumber))
   362  	return result, err
   363  }
   364  
   365  // NonceAt returns the account nonce of the given account.
   366  // The block number can be nil, in which case the nonce is taken from the latest known block.
   367  func (ec *Client) NonceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (uint64, error) {
   368  	var result hexutil.Uint64
   369  	err := ec.c.CallContext(ctx, &result, "eth_getTransactionCount", account, toBlockNumArg(blockNumber))
   370  	return uint64(result), err
   371  }
   372  
   373  // Filters
   374  
   375  // FilterLogs executes a filter query.
   376  func (ec *Client) FilterLogs(ctx context.Context, q ethereum.FilterQuery) ([]types.Log, error) {
   377  	var result []types.Log
   378  	arg, err := toFilterArg(q)
   379  	if err != nil {
   380  		return nil, err
   381  	}
   382  	err = ec.c.CallContext(ctx, &result, "eth_getLogs", arg)
   383  	return result, err
   384  }
   385  
   386  // SubscribeFilterLogs subscribes to the results of a streaming filter query.
   387  func (ec *Client) SubscribeFilterLogs(ctx context.Context, q ethereum.FilterQuery, ch chan<- types.Log) (ethereum.Subscription, error) {
   388  	arg, err := toFilterArg(q)
   389  	if err != nil {
   390  		return nil, err
   391  	}
   392  	return ec.c.EthSubscribe(ctx, ch, "logs", arg)
   393  }
   394  
   395  func toFilterArg(q ethereum.FilterQuery) (interface{}, error) {
   396  	arg := map[string]interface{}{
   397  		"address": q.Addresses,
   398  		"topics":  q.Topics,
   399  	}
   400  	if q.BlockHash != nil {
   401  		arg["blockHash"] = *q.BlockHash
   402  		if q.FromBlock != nil || q.ToBlock != nil {
   403  			return nil, fmt.Errorf("cannot specify both BlockHash and FromBlock/ToBlock")
   404  		}
   405  	} else {
   406  		if q.FromBlock == nil {
   407  			arg["fromBlock"] = "0x0"
   408  		} else {
   409  			arg["fromBlock"] = toBlockNumArg(q.FromBlock)
   410  		}
   411  		arg["toBlock"] = toBlockNumArg(q.ToBlock)
   412  	}
   413  	return arg, nil
   414  }
   415  
   416  // Pending State
   417  
   418  // PendingBalanceAt returns the wei balance of the given account in the pending state.
   419  func (ec *Client) PendingBalanceAt(ctx context.Context, account common.Address) (*big.Int, error) {
   420  	var result hexutil.Big
   421  	err := ec.c.CallContext(ctx, &result, "eth_getBalance", account, "pending")
   422  	return (*big.Int)(&result), err
   423  }
   424  
   425  // PendingStorageAt returns the value of key in the contract storage of the given account in the pending state.
   426  func (ec *Client) PendingStorageAt(ctx context.Context, account common.Address, key common.Hash) ([]byte, error) {
   427  	var result hexutil.Bytes
   428  	err := ec.c.CallContext(ctx, &result, "eth_getStorageAt", account, key, "pending")
   429  	return result, err
   430  }
   431  
   432  // PendingCodeAt returns the contract code of the given account in the pending state.
   433  func (ec *Client) PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error) {
   434  	var result hexutil.Bytes
   435  	err := ec.c.CallContext(ctx, &result, "eth_getCode", account, "pending")
   436  	return result, err
   437  }
   438  
   439  // PendingNonceAt returns the account nonce of the given account in the pending state.
   440  // This is the nonce that should be used for the next transaction.
   441  func (ec *Client) PendingNonceAt(ctx context.Context, account common.Address) (uint64, error) {
   442  	var result hexutil.Uint64
   443  	err := ec.c.CallContext(ctx, &result, "eth_getTransactionCount", account, "pending")
   444  	return uint64(result), err
   445  }
   446  
   447  // PendingTransactionCount returns the total number of transactions in the pending state.
   448  func (ec *Client) PendingTransactionCount(ctx context.Context) (uint, error) {
   449  	var num hexutil.Uint
   450  	err := ec.c.CallContext(ctx, &num, "eth_getBlockTransactionCountByNumber", "pending")
   451  	return uint(num), err
   452  }
   453  
   454  // Contract Calling
   455  
   456  // CallContract executes a message call transaction, which is directly executed in the VM
   457  // of the node, but never mined into the blockchain.
   458  //
   459  // blockNumber selects the block height at which the call runs. It can be nil, in which
   460  // case the code is taken from the latest known block. Note that state from very old
   461  // blocks might not be available.
   462  func (ec *Client) CallContract(ctx context.Context, msg ethereum.CallMsg, blockNumber *big.Int) ([]byte, error) {
   463  	var hex hexutil.Bytes
   464  	err := ec.c.CallContext(ctx, &hex, "eth_call", toCallArg(msg), toBlockNumArg(blockNumber))
   465  	if err != nil {
   466  		return nil, err
   467  	}
   468  	return hex, nil
   469  }
   470  
   471  // PendingCallContract executes a message call transaction using the EVM.
   472  // The state seen by the contract call is the pending state.
   473  func (ec *Client) PendingCallContract(ctx context.Context, msg ethereum.CallMsg) ([]byte, error) {
   474  	var hex hexutil.Bytes
   475  	err := ec.c.CallContext(ctx, &hex, "eth_call", toCallArg(msg), "pending")
   476  	if err != nil {
   477  		return nil, err
   478  	}
   479  	return hex, nil
   480  }
   481  
   482  // SuggestGasPrice retrieves the currently suggested gas price to allow a timely
   483  // execution of a transaction.
   484  func (ec *Client) SuggestGasPrice(ctx context.Context) (*big.Int, error) {
   485  	var hex hexutil.Big
   486  	if err := ec.c.CallContext(ctx, &hex, "eth_gasPrice"); err != nil {
   487  		return nil, err
   488  	}
   489  	return (*big.Int)(&hex), nil
   490  }
   491  
   492  // SuggestGasTipCap retrieves the currently suggested gas tip cap after 1559 to
   493  // allow a timely execution of a transaction.
   494  func (ec *Client) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
   495  	var hex hexutil.Big
   496  	if err := ec.c.CallContext(ctx, &hex, "eth_maxPriorityFeePerGas"); err != nil {
   497  		return nil, err
   498  	}
   499  	return (*big.Int)(&hex), nil
   500  }
   501  
   502  // EstimateGas tries to estimate the gas needed to execute a specific transaction based on
   503  // the current pending state of the backend blockchain. There is no guarantee that this is
   504  // the true gas limit requirement as other transactions may be added or removed by miners,
   505  // but it should provide a basis for setting a reasonable default.
   506  func (ec *Client) EstimateGas(ctx context.Context, msg ethereum.CallMsg) (uint64, error) {
   507  	var hex hexutil.Uint64
   508  	err := ec.c.CallContext(ctx, &hex, "eth_estimateGas", toCallArg(msg))
   509  	if err != nil {
   510  		return 0, err
   511  	}
   512  	return uint64(hex), nil
   513  }
   514  
   515  // SendTransaction injects a signed transaction into the pending pool for execution.
   516  //
   517  // If the transaction was a contract creation use the TransactionReceipt method to get the
   518  // contract address after the transaction has been mined.
   519  func (ec *Client) SendTransaction(ctx context.Context, tx *types.Transaction) error {
   520  	data, err := tx.MarshalBinary()
   521  	if err != nil {
   522  		return err
   523  	}
   524  	return ec.c.CallContext(ctx, nil, "eth_sendRawTransaction", hexutil.Encode(data))
   525  }
   526  
   527  func toBlockNumArg(number *big.Int) string {
   528  	if number == nil {
   529  		return "latest"
   530  	}
   531  	pending := big.NewInt(-1)
   532  	if number.Cmp(pending) == 0 {
   533  		return "pending"
   534  	}
   535  	return hexutil.EncodeBig(number)
   536  }
   537  
   538  func toCallArg(msg ethereum.CallMsg) interface{} {
   539  	arg := map[string]interface{}{
   540  		"from": msg.From,
   541  		"to":   msg.To,
   542  	}
   543  	if len(msg.Data) > 0 {
   544  		arg["data"] = hexutil.Bytes(msg.Data)
   545  	}
   546  	if msg.Value != nil {
   547  		arg["value"] = (*hexutil.Big)(msg.Value)
   548  	}
   549  	if msg.Gas != 0 {
   550  		arg["gas"] = hexutil.Uint64(msg.Gas)
   551  	}
   552  	if msg.GasPrice != nil {
   553  		arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice)
   554  	}
   555  	return arg
   556  }