laconicd/rpc/ethereum/namespaces/eth/api.go

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package eth
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import (
"context"
"encoding/json"
"fmt"
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"math/big"
"strings"
"github.com/ethereum/go-ethereum/core/vm"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
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"github.com/pkg/errors"
"github.com/spf13/viper"
"github.com/tendermint/tendermint/libs/log"
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"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/flags"
codectypes "github.com/cosmos/cosmos-sdk/codec/types"
"github.com/cosmos/cosmos-sdk/crypto/keyring"
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sdk "github.com/cosmos/cosmos-sdk/types"
authtx "github.com/cosmos/cosmos-sdk/x/auth/tx"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
"github.com/ethereum/go-ethereum/accounts/keystore"
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"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
ethtypes "github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
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"github.com/tharsis/ethermint/crypto/hd"
"github.com/tharsis/ethermint/rpc/ethereum/backend"
rpctypes "github.com/tharsis/ethermint/rpc/ethereum/types"
ethermint "github.com/tharsis/ethermint/types"
evmtypes "github.com/tharsis/ethermint/x/evm/types"
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)
// PublicAPI is the eth_ prefixed set of APIs in the Web3 JSON-RPC spec.
type PublicAPI struct {
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ctx context.Context
clientCtx client.Context
queryClient *rpctypes.QueryClient
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chainIDEpoch *big.Int
logger log.Logger
backend backend.Backend
nonceLock *rpctypes.AddrLocker
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}
// NewPublicAPI creates an instance of the public ETH Web3 API.
func NewPublicAPI(
logger log.Logger,
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clientCtx client.Context,
backend backend.Backend,
nonceLock *rpctypes.AddrLocker,
) *PublicAPI {
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epoch, err := ethermint.ParseChainID(clientCtx.ChainID)
if err != nil {
panic(err)
}
algos, _ := clientCtx.Keyring.SupportedAlgorithms()
if !algos.Contains(hd.EthSecp256k1) {
kr, err := keyring.New(
sdk.KeyringServiceName(),
viper.GetString(flags.FlagKeyringBackend),
clientCtx.KeyringDir,
clientCtx.Input,
hd.EthSecp256k1Option(),
)
if err != nil {
panic(err)
}
clientCtx = clientCtx.WithKeyring(kr)
}
api := &PublicAPI{
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ctx: context.Background(),
clientCtx: clientCtx,
queryClient: rpctypes.NewQueryClient(clientCtx),
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chainIDEpoch: epoch,
logger: logger.With("client", "json-rpc"),
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backend: backend,
nonceLock: nonceLock,
}
return api
}
// ClientCtx returns client context
func (e *PublicAPI) ClientCtx() client.Context {
return e.clientCtx
}
rpc: `miner_` namespace (#377) * miner namespace * SetGasPrice call * Added note plus fixed error logging * Refactor to use the keyring in the miner namespace * Changed keyring function return * Added more detailed logs to unsupported functions * Reverted changes on ethapi and just using a refrence to it on miner * Creating a transaction * fix condition * Error string not capitalized * suggested changes to setEtherbase * change log level * minor changes * minor changes * Sending tx to test the endpoint * get tx nonce * Using aphoton const and changing the logger to debug * Using default RPC gas limit constant * Apply suggestions from code review Renames and log changes Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * pair programming session * get gas * Set gas prices note added * Setting fess and max gas * delete unnecessary log * Apply suggestions from code review return false in case of error Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Suggested changes applied * Updated changelog and json_rpc docs * Update CHANGELOG.md Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Using the same coin denom as the gas price for the fee Co-authored-by: ramacarlucho <ramirocarlucho@gmail.com> Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com>
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func (e *PublicAPI) QueryClient() *rpctypes.QueryClient {
return e.queryClient
}
func (e *PublicAPI) Ctx() context.Context {
return e.ctx
}
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// ProtocolVersion returns the supported Ethereum protocol version.
func (e *PublicAPI) ProtocolVersion() hexutil.Uint {
e.logger.Debug("eth_protocolVersion")
return hexutil.Uint(ethermint.ProtocolVersion)
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}
// ChainId returns the chain's identifier in hex format
func (e *PublicAPI) ChainId() (hexutil.Uint, error) { // nolint
e.logger.Debug("eth_chainId")
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return hexutil.Uint(uint(e.chainIDEpoch.Uint64())), nil
}
// Syncing returns whether or not the current node is syncing with other peers. Returns false if not, or a struct
// outlining the state of the sync if it is.
func (e *PublicAPI) Syncing() (interface{}, error) {
e.logger.Debug("eth_syncing")
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status, err := e.clientCtx.Client.Status(e.ctx)
if err != nil {
return false, err
}
if !status.SyncInfo.CatchingUp {
return false, nil
}
return map[string]interface{}{
// "startingBlock": nil, // NA
"currentBlock": hexutil.Uint64(status.SyncInfo.LatestBlockHeight),
// "highestBlock": nil, // NA
// "pulledStates": nil, // NA
// "knownStates": nil, // NA
}, nil
}
// Coinbase is the address that staking rewards will be send to (alias for Etherbase).
func (e *PublicAPI) Coinbase() (string, error) {
e.logger.Debug("eth_coinbase")
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rpc: `miner_` namespace (#377) * miner namespace * SetGasPrice call * Added note plus fixed error logging * Refactor to use the keyring in the miner namespace * Changed keyring function return * Added more detailed logs to unsupported functions * Reverted changes on ethapi and just using a refrence to it on miner * Creating a transaction * fix condition * Error string not capitalized * suggested changes to setEtherbase * change log level * minor changes * minor changes * Sending tx to test the endpoint * get tx nonce * Using aphoton const and changing the logger to debug * Using default RPC gas limit constant * Apply suggestions from code review Renames and log changes Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * pair programming session * get gas * Set gas prices note added * Setting fess and max gas * delete unnecessary log * Apply suggestions from code review return false in case of error Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Suggested changes applied * Updated changelog and json_rpc docs * Update CHANGELOG.md Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Using the same coin denom as the gas price for the fee Co-authored-by: ramacarlucho <ramirocarlucho@gmail.com> Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com>
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coinbase, err := e.backend.GetCoinbase()
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if err != nil {
return "", err
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}
rpc: `miner_` namespace (#377) * miner namespace * SetGasPrice call * Added note plus fixed error logging * Refactor to use the keyring in the miner namespace * Changed keyring function return * Added more detailed logs to unsupported functions * Reverted changes on ethapi and just using a refrence to it on miner * Creating a transaction * fix condition * Error string not capitalized * suggested changes to setEtherbase * change log level * minor changes * minor changes * Sending tx to test the endpoint * get tx nonce * Using aphoton const and changing the logger to debug * Using default RPC gas limit constant * Apply suggestions from code review Renames and log changes Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * pair programming session * get gas * Set gas prices note added * Setting fess and max gas * delete unnecessary log * Apply suggestions from code review return false in case of error Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Suggested changes applied * Updated changelog and json_rpc docs * Update CHANGELOG.md Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Update ethereum/rpc/namespaces/miner/api.go Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> * Using the same coin denom as the gas price for the fee Co-authored-by: ramacarlucho <ramirocarlucho@gmail.com> Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com> Co-authored-by: Federico Kunze <federico.kunze94@gmail.com>
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ethAddr := common.BytesToAddress(coinbase.Bytes())
return ethAddr.Hex(), nil
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}
// Mining returns whether or not this node is currently mining. Always false.
func (e *PublicAPI) Mining() bool {
e.logger.Debug("eth_mining")
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return false
}
// Hashrate returns the current node's hashrate. Always 0.
func (e *PublicAPI) Hashrate() hexutil.Uint64 {
e.logger.Debug("eth_hashrate")
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return 0
}
// GasPrice returns the current gas price based on Ethermint's gas price oracle.
func (e *PublicAPI) GasPrice() *hexutil.Big {
e.logger.Debug("eth_gasPrice")
out := new(big.Int).SetInt64(e.backend.RPCMinGasPrice())
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return (*hexutil.Big)(out)
}
// Accounts returns the list of accounts available to this node.
func (e *PublicAPI) Accounts() ([]common.Address, error) {
e.logger.Debug("eth_accounts")
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addresses := make([]common.Address, 0) // return [] instead of nil if empty
infos, err := e.clientCtx.Keyring.List()
if err != nil {
return addresses, err
}
for _, info := range infos {
addressBytes := info.GetPubKey().Address().Bytes()
addresses = append(addresses, common.BytesToAddress(addressBytes))
}
return addresses, nil
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}
// BlockNumber returns the current block number.
func (e *PublicAPI) BlockNumber() (hexutil.Uint64, error) {
e.logger.Debug("eth_blockNumber")
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return e.backend.BlockNumber()
}
// GetBalance returns the provided account's balance up to the provided block number.
func (e *PublicAPI) GetBalance(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (*hexutil.Big, error) {
e.logger.Debug("eth_getBalance", "address", address.String(), "block number or hash", blockNrOrHash)
blockNum, err := e.getBlockNumber(blockNrOrHash)
if err != nil {
return nil, err
}
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req := &evmtypes.QueryBalanceRequest{
Address: address.String(),
}
res, err := e.queryClient.Balance(rpctypes.ContextWithHeight(blockNum.Int64()), req)
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if err != nil {
return nil, err
}
val, ok := sdk.NewIntFromString(res.Balance)
if !ok {
return nil, errors.New("invalid balance")
}
return (*hexutil.Big)(val.BigInt()), nil
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}
// GetStorageAt returns the contract storage at the given address, block number, and key.
func (e *PublicAPI) GetStorageAt(address common.Address, key string, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) {
e.logger.Debug("eth_getStorageAt", "address", address.Hex(), "key", key, "block number or hash", blockNrOrHash)
blockNum, err := e.getBlockNumber(blockNrOrHash)
if err != nil {
return nil, err
}
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req := &evmtypes.QueryStorageRequest{
Address: address.String(),
Key: key,
}
res, err := e.queryClient.Storage(rpctypes.ContextWithHeight(blockNum.Int64()), req)
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if err != nil {
return nil, err
}
value := common.HexToHash(res.Value)
return value.Bytes(), nil
}
// GetTransactionCount returns the number of transactions at the given address up to the given block number.
func (e *PublicAPI) GetTransactionCount(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (*hexutil.Uint64, error) {
e.logger.Debug("eth_getTransactionCount", "address", address.Hex(), "block number or hash", blockNrOrHash)
blockNum, err := e.getBlockNumber(blockNrOrHash)
if err != nil {
return nil, err
}
return e.backend.GetTransactionCount(address, blockNum)
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}
// GetBlockTransactionCountByHash returns the number of transactions in the block identified by hash.
func (e *PublicAPI) GetBlockTransactionCountByHash(hash common.Hash) *hexutil.Uint {
e.logger.Debug("eth_getBlockTransactionCountByHash", "hash", hash.Hex())
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resBlock, err := e.clientCtx.Client.BlockByHash(e.ctx, hash.Bytes())
if err != nil {
e.logger.Debug("block not found", "hash", hash.Hex(), "error", err.Error())
return nil
}
if resBlock.Block == nil {
e.logger.Debug("block not found", "hash", hash.Hex())
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return nil
}
n := hexutil.Uint(len(resBlock.Block.Txs))
return &n
}
// GetBlockTransactionCountByNumber returns the number of transactions in the block identified by number.
func (e *PublicAPI) GetBlockTransactionCountByNumber(blockNum rpctypes.BlockNumber) *hexutil.Uint {
e.logger.Debug("eth_getBlockTransactionCountByNumber", "height", blockNum.Int64())
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resBlock, err := e.clientCtx.Client.Block(e.ctx, blockNum.TmHeight())
if err != nil {
e.logger.Debug("block not found", "height", blockNum.Int64(), "error", err.Error())
return nil
}
if resBlock.Block == nil {
e.logger.Debug("block not found", "height", blockNum.Int64())
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return nil
}
n := hexutil.Uint(len(resBlock.Block.Txs))
return &n
}
// GetUncleCountByBlockHash returns the number of uncles in the block identified by hash. Always zero.
func (e *PublicAPI) GetUncleCountByBlockHash(hash common.Hash) hexutil.Uint {
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return 0
}
// GetUncleCountByBlockNumber returns the number of uncles in the block identified by number. Always zero.
func (e *PublicAPI) GetUncleCountByBlockNumber(blockNum rpctypes.BlockNumber) hexutil.Uint {
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return 0
}
// GetCode returns the contract code at the given address and block number.
func (e *PublicAPI) GetCode(address common.Address, blockNrOrHash rpctypes.BlockNumberOrHash) (hexutil.Bytes, error) {
e.logger.Debug("eth_getCode", "address", address.Hex(), "block number or hash", blockNrOrHash)
blockNum, err := e.getBlockNumber(blockNrOrHash)
if err != nil {
return nil, err
}
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req := &evmtypes.QueryCodeRequest{
Address: address.String(),
}
res, err := e.queryClient.Code(rpctypes.ContextWithHeight(blockNum.Int64()), req)
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if err != nil {
return nil, err
}
return res.Code, nil
}
// GetTransactionLogs returns the logs given a transaction hash.
func (e *PublicAPI) GetTransactionLogs(txHash common.Hash) ([]*ethtypes.Log, error) {
e.logger.Debug("eth_getTransactionLogs", "hash", txHash)
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return e.backend.GetTransactionLogs(txHash)
}
// Sign signs the provided data using the private key of address via Geth's signature standard.
func (e *PublicAPI) Sign(address common.Address, data hexutil.Bytes) (hexutil.Bytes, error) {
e.logger.Debug("eth_sign", "address", address.Hex(), "data", common.Bytes2Hex(data))
from := sdk.AccAddress(address.Bytes())
_, err := e.clientCtx.Keyring.KeyByAddress(from)
if err != nil {
e.logger.Error("failed to find key in keyring", "address", address.String())
return nil, fmt.Errorf("%s; %s", keystore.ErrNoMatch, err.Error())
}
// Sign the requested hash with the wallet
signature, _, err := e.clientCtx.Keyring.SignByAddress(from, data)
if err != nil {
e.logger.Error("keyring.SignByAddress failed", "address", address.Hex())
return nil, err
}
signature[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
return signature, nil
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}
// SendTransaction sends an Ethereum transaction.
func (e *PublicAPI) SendTransaction(args rpctypes.SendTxArgs) (common.Hash, error) {
e.logger.Debug("eth_sendTransaction", "args", args.String())
return e.backend.SendTransaction(args)
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}
// SendRawTransaction send a raw Ethereum transaction.
func (e *PublicAPI) SendRawTransaction(data hexutil.Bytes) (common.Hash, error) {
e.logger.Debug("eth_sendRawTransaction", "length", len(data))
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// RLP decode raw transaction bytes
tx, err := e.clientCtx.TxConfig.TxDecoder()(data)
if err != nil {
e.logger.Error("transaction decoding failed", "error", err.Error())
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return common.Hash{}, err
}
ethereumTx, isEthTx := tx.(*evmtypes.MsgEthereumTx)
if !isEthTx {
e.logger.Debug("invalid transaction type", "type", fmt.Sprintf("%T", tx))
return common.Hash{}, fmt.Errorf("invalid transaction type %T", tx)
}
if err := ethereumTx.ValidateBasic(); err != nil {
e.logger.Debug("tx failed basic validation", "error", err.Error())
return common.Hash{}, err
}
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builder, ok := e.clientCtx.TxConfig.NewTxBuilder().(authtx.ExtensionOptionsTxBuilder)
if !ok {
e.logger.Error("clientCtx.TxConfig.NewTxBuilder returns unsupported builder")
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}
option, err := codectypes.NewAnyWithValue(&evmtypes.ExtensionOptionsEthereumTx{})
if err != nil {
e.logger.Error("codectypes.NewAnyWithValue failed to pack an obvious value", "error", err.Error())
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}
builder.SetExtensionOptions(option)
err = builder.SetMsgs(tx.GetMsgs()...)
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if err != nil {
e.logger.Error("builder.SetMsgs failed", "error", err.Error())
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}
// Query params to use the EVM denomination
res, err := e.queryClient.QueryClient.Params(e.ctx, &evmtypes.QueryParamsRequest{})
if err != nil {
e.logger.Error("failed to query evm params", "error", err.Error())
return common.Hash{}, err
}
txData, err := evmtypes.UnpackTxData(ethereumTx.Data)
if err != nil {
e.logger.Error("failed to unpack tx data", "error", err.Error())
return common.Hash{}, err
}
fees := sdk.Coins{sdk.NewCoin(res.Params.EvmDenom, sdk.NewIntFromBigInt(txData.Fee()))}
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builder.SetFeeAmount(fees)
builder.SetGasLimit(ethereumTx.GetGas())
// Encode transaction by default Tx encoder
txBytes, err := e.clientCtx.TxConfig.TxEncoder()(builder.GetTx())
if err != nil {
e.logger.Error("failed to encode eth tx using default encoder", "error", err.Error())
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return common.Hash{}, err
}
txHash := ethereumTx.AsTransaction().Hash()
syncCtx := e.clientCtx.WithBroadcastMode(flags.BroadcastSync)
rsp, err := syncCtx.BroadcastTx(txBytes)
if err != nil || rsp.Code != 0 {
if err == nil {
err = errors.New(rsp.RawLog)
}
e.logger.Error("failed to broadcast tx", "error", err.Error())
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return txHash, err
}
return txHash, nil
}
// Call performs a raw contract call.
func (e *PublicAPI) Call(args evmtypes.CallArgs, blockNrOrHash rpctypes.BlockNumberOrHash, _ *rpctypes.StateOverride) (hexutil.Bytes, error) {
e.logger.Debug("eth_call", "args", args.String(), "block number or hash", blockNrOrHash)
blockNum, err := e.getBlockNumber(blockNrOrHash)
if err != nil {
return nil, err
}
data, err := e.doCall(args, blockNum)
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if err != nil {
return []byte{}, err
}
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return (hexutil.Bytes)(data.Ret), nil
}
// DoCall performs a simulated call operation through the evmtypes. It returns the
// estimated gas used on the operation or an error if fails.
func (e *PublicAPI) doCall(
args evmtypes.CallArgs, blockNr rpctypes.BlockNumber,
) (*evmtypes.MsgEthereumTxResponse, error) {
bz, err := json.Marshal(&args)
if err != nil {
return nil, err
}
req := evmtypes.EthCallRequest{Args: bz, GasCap: e.backend.RPCGasCap()}
// From ContextWithHeight: if the provided height is 0,
// it will return an empty context and the gRPC query will use
// the latest block height for querying.
res, err := e.queryClient.EthCall(rpctypes.ContextWithHeight(blockNr.Int64()), &req)
if err != nil {
return nil, err
}
if res.Failed() {
if res.VmError != vm.ErrExecutionReverted.Error() {
return nil, status.Error(codes.Internal, res.VmError)
}
return nil, evmtypes.NewExecErrorWithReason(res.Ret)
}
return res, nil
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}
// EstimateGas returns an estimate of gas usage for the given smart contract call.
func (e *PublicAPI) EstimateGas(args evmtypes.CallArgs, blockNrOptional *rpctypes.BlockNumber) (hexutil.Uint64, error) {
e.logger.Debug("eth_estimateGas")
return e.backend.EstimateGas(args, blockNrOptional)
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}
// GetBlockByHash returns the block identified by hash.
func (e *PublicAPI) GetBlockByHash(hash common.Hash, fullTx bool) (map[string]interface{}, error) {
e.logger.Debug("eth_getBlockByHash", "hash", hash.Hex(), "full", fullTx)
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return e.backend.GetBlockByHash(hash, fullTx)
}
// GetBlockByNumber returns the block identified by number.
func (e *PublicAPI) GetBlockByNumber(ethBlockNum rpctypes.BlockNumber, fullTx bool) (map[string]interface{}, error) {
e.logger.Debug("eth_getBlockByNumber", "number", ethBlockNum, "full", fullTx)
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return e.backend.GetBlockByNumber(ethBlockNum, fullTx)
}
// GetTransactionByHash returns the transaction identified by hash.
func (e *PublicAPI) GetTransactionByHash(hash common.Hash) (*rpctypes.RPCTransaction, error) {
e.logger.Debug("eth_getTransactionByHash", "hash", hash.Hex())
return e.backend.GetTransactionByHash(hash)
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}
// GetTransactionByBlockHashAndIndex returns the transaction identified by hash and index.
func (e *PublicAPI) GetTransactionByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) (*rpctypes.RPCTransaction, error) {
e.logger.Debug("eth_getTransactionByBlockHashAndIndex", "hash", hash.Hex(), "index", idx)
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resBlock, err := e.clientCtx.Client.BlockByHash(e.ctx, hash.Bytes())
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if err != nil {
e.logger.Debug("block not found", "hash", hash.Hex(), "error", err.Error())
return nil, nil
}
if resBlock.Block == nil {
e.logger.Debug("block not found", "hash", hash.Hex())
return nil, nil
}
i := int(idx)
if i >= len(resBlock.Block.Txs) {
e.logger.Debug("block txs index out of bound", "index", i)
return nil, nil
}
txBz := resBlock.Block.Txs[i]
tx, err := e.clientCtx.TxConfig.TxDecoder()(txBz)
if err != nil {
e.logger.Debug("decoding failed", "error", err.Error())
return nil, fmt.Errorf("failed to decode tx: %w", err)
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}
msg, err := evmtypes.UnwrapEthereumMsg(&tx)
if err != nil {
e.logger.Debug("invalid tx", "error", err.Error())
return nil, err
}
return rpctypes.NewTransactionFromMsg(
msg,
hash,
uint64(resBlock.Block.Height),
uint64(idx),
e.chainIDEpoch,
)
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}
// GetTransactionByBlockNumberAndIndex returns the transaction identified by number and index.
func (e *PublicAPI) GetTransactionByBlockNumberAndIndex(blockNum rpctypes.BlockNumber, idx hexutil.Uint) (*rpctypes.RPCTransaction, error) {
e.logger.Debug("eth_getTransactionByBlockNumberAndIndex", "number", blockNum, "index", idx)
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resBlock, err := e.clientCtx.Client.Block(e.ctx, blockNum.TmHeight())
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if err != nil {
e.logger.Debug("block not found", "height", blockNum.Int64(), "error", err.Error())
return nil, nil
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}
if resBlock.Block == nil {
e.logger.Debug("block not found", "height", blockNum.Int64())
return nil, nil
}
i := int(idx)
if i >= len(resBlock.Block.Txs) {
e.logger.Debug("block txs index out of bound", "index", i)
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return nil, nil
}
txBz := resBlock.Block.Txs[i]
tx, err := e.clientCtx.TxConfig.TxDecoder()(txBz)
if err != nil {
e.logger.Debug("decoding failed", "error", err.Error())
return nil, fmt.Errorf("failed to decode tx: %w", err)
}
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msg, err := evmtypes.UnwrapEthereumMsg(&tx)
if err != nil {
e.logger.Debug("invalid tx", "error", err.Error())
return nil, err
}
return rpctypes.NewTransactionFromMsg(
msg,
common.BytesToHash(resBlock.Block.Hash()),
uint64(resBlock.Block.Height),
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uint64(idx),
e.chainIDEpoch,
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)
}
// GetTransactionReceipt returns the transaction receipt identified by hash.
func (e *PublicAPI) GetTransactionReceipt(hash common.Hash) (map[string]interface{}, error) {
e.logger.Debug("eth_getTransactionReceipt", "hash", hash.Hex())
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res, err := e.backend.GetTxByEthHash(hash)
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if err != nil {
e.logger.Debug("tx not found", "hash", hash.Hex(), "error", err.Error())
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return nil, nil
}
resBlock, err := e.clientCtx.Client.Block(e.ctx, &res.Height)
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if err != nil {
e.logger.Debug("block not found", "height", res.Height, "error", err.Error())
return nil, nil
}
tx, err := e.clientCtx.TxConfig.TxDecoder()(res.Tx)
if err != nil {
e.logger.Debug("decoding failed", "error", err.Error())
return nil, fmt.Errorf("failed to decode tx: %w", err)
}
msg, err := evmtypes.UnwrapEthereumMsg(&tx)
if err != nil {
e.logger.Debug("invalid tx", "error", err.Error())
return nil, err
}
txData, err := evmtypes.UnpackTxData(msg.Data)
if err != nil {
e.logger.Error("failed to unpack tx data", "error", err.Error())
return nil, err
}
cumulativeGasUsed := uint64(0)
blockRes, err := e.clientCtx.Client.BlockResults(e.ctx, &res.Height)
if err != nil {
e.logger.Debug("failed to retrieve block results", "height", res.Height, "error", err.Error())
return nil, nil
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}
for i := 0; i <= int(res.Index) && i < len(blockRes.TxsResults); i++ {
cumulativeGasUsed += uint64(blockRes.TxsResults[i].GasUsed)
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}
// Get the transaction result from the log
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var status hexutil.Uint
if strings.Contains(res.TxResult.GetLog(), evmtypes.AttributeKeyEthereumTxFailed) {
status = hexutil.Uint(ethtypes.ReceiptStatusFailed)
} else {
status = hexutil.Uint(ethtypes.ReceiptStatusSuccessful)
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}
from, err := msg.GetSender(e.chainIDEpoch)
if err != nil {
return nil, err
}
logs, err := e.backend.GetTransactionLogs(hash)
if err != nil {
e.logger.Debug("logs not found", "hash", hash.Hex(), "error", err.Error())
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}
receipt := map[string]interface{}{
// Consensus fields: These fields are defined by the Yellow Paper
"status": status,
"cumulativeGasUsed": hexutil.Uint64(cumulativeGasUsed),
"logsBloom": ethtypes.BytesToBloom(ethtypes.LogsBloom(logs)),
"logs": logs,
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// Implementation fields: These fields are added by geth when processing a transaction.
// They are stored in the chain database.
"transactionHash": hash,
"contractAddress": nil,
"gasUsed": hexutil.Uint64(res.TxResult.GasUsed),
"type": hexutil.Uint(txData.TxType()),
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// Inclusion information: These fields provide information about the inclusion of the
// transaction corresponding to this receipt.
"blockHash": common.BytesToHash(resBlock.Block.Header.Hash()).Hex(),
"blockNumber": hexutil.Uint64(res.Height),
"transactionIndex": hexutil.Uint64(res.Index),
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// sender and receiver (contract or EOA) addreses
"from": from,
"to": txData.GetTo(),
}
if logs == nil {
receipt["logs"] = [][]*ethtypes.Log{}
}
// If the ContractAddress is 20 0x0 bytes, assume it is not a contract creation
if txData.GetTo() == nil {
receipt["contractAddress"] = crypto.CreateAddress(from, txData.GetNonce())
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}
return receipt, nil
}
// PendingTransactions returns the transactions that are in the transaction pool
// and have a from address that is one of the accounts this node manages.
func (e *PublicAPI) PendingTransactions() ([]*rpctypes.RPCTransaction, error) {
e.logger.Debug("eth_getPendingTransactions")
txs, err := e.backend.PendingTransactions()
if err != nil {
return nil, err
}
result := make([]*rpctypes.RPCTransaction, 0, len(txs))
for _, tx := range txs {
msg, err := evmtypes.UnwrapEthereumMsg(tx)
if err != nil {
// not valid ethereum tx
continue
}
rpctx, err := rpctypes.NewTransactionFromMsg(
msg,
common.Hash{},
uint64(0),
uint64(0),
e.chainIDEpoch,
)
if err != nil {
return nil, err
}
result = append(result, rpctx)
}
return result, nil
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}
// GetUncleByBlockHashAndIndex returns the uncle identified by hash and index. Always returns nil.
func (e *PublicAPI) GetUncleByBlockHashAndIndex(hash common.Hash, idx hexutil.Uint) map[string]interface{} {
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return nil
}
// GetUncleByBlockNumberAndIndex returns the uncle identified by number and index. Always returns nil.
func (e *PublicAPI) GetUncleByBlockNumberAndIndex(number, idx hexutil.Uint) map[string]interface{} {
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return nil
}
// GetProof returns an account object with proof and any storage proofs
func (e *PublicAPI) GetProof(address common.Address, storageKeys []string, blockNrOrHash rpctypes.BlockNumberOrHash) (*rpctypes.AccountResult, error) {
e.logger.Debug("eth_getProof", "address", address.Hex(), "keys", storageKeys, "block number or hash", blockNrOrHash)
blockNum, err := e.getBlockNumber(blockNrOrHash)
if err != nil {
return nil, err
}
height := blockNum.Int64()
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ctx := rpctypes.ContextWithHeight(height)
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clientCtx := e.clientCtx.WithHeight(height)
// query storage proofs
storageProofs := make([]rpctypes.StorageResult, len(storageKeys))
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for i, key := range storageKeys {
hexKey := common.HexToHash(key)
valueBz, proof, err := e.queryClient.GetProof(clientCtx, evmtypes.StoreKey, evmtypes.StateKey(address, hexKey.Bytes()))
if err != nil {
return nil, err
}
// check for proof
var proofStr string
if proof != nil {
proofStr = proof.String()
}
storageProofs[i] = rpctypes.StorageResult{
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Key: key,
Value: (*hexutil.Big)(new(big.Int).SetBytes(valueBz)),
Proof: []string{proofStr},
}
}
// query EVM account
req := &evmtypes.QueryAccountRequest{
Address: address.String(),
}
res, err := e.queryClient.Account(ctx, req)
if err != nil {
return nil, err
}
// query account proofs
accountKey := authtypes.AddressStoreKey(sdk.AccAddress(address.Bytes()))
_, proof, err := e.queryClient.GetProof(clientCtx, authtypes.StoreKey, accountKey)
if err != nil {
return nil, err
}
// check for proof
var accProofStr string
if proof != nil {
accProofStr = proof.String()
}
balance, ok := sdk.NewIntFromString(res.Balance)
if !ok {
return nil, errors.New("invalid balance")
}
return &rpctypes.AccountResult{
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Address: address,
AccountProof: []string{accProofStr},
Balance: (*hexutil.Big)(balance.BigInt()),
CodeHash: common.HexToHash(res.CodeHash),
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Nonce: hexutil.Uint64(res.Nonce),
StorageHash: common.Hash{}, // NOTE: Ethermint doesn't have a storage hash. TODO: implement?
StorageProof: storageProofs,
}, nil
}
// getBlockNumber returns the BlockNumber from BlockNumberOrHash
func (e *PublicAPI) getBlockNumber(blockNrOrHash rpctypes.BlockNumberOrHash) (rpctypes.BlockNumber, error) {
switch {
case blockNrOrHash.BlockHash == nil && blockNrOrHash.BlockNumber == nil:
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return rpctypes.EthEarliestBlockNumber, fmt.Errorf("types BlockHash and BlockNumber cannot be both nil")
case blockNrOrHash.BlockHash != nil:
blockHeader, err := e.backend.HeaderByHash(*blockNrOrHash.BlockHash)
if err != nil {
return rpctypes.EthEarliestBlockNumber, err
}
return rpctypes.NewBlockNumber(blockHeader.Number), nil
case blockNrOrHash.BlockNumber != nil:
return *blockNrOrHash.BlockNumber, nil
default:
return rpctypes.EthEarliestBlockNumber, nil
}
}