laconicd/ethereum/rpc/namespaces/miner/api.go
crypto-facs 640684c648
rpc: refactor backend package (#418)
* backend refractor

* Revert init file changes

* fix linter issues

* Update ethereum/rpc/namespaces/personal/api.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>
2021-08-10 10:04:16 +00:00

193 lines
5.9 KiB
Go

package miner
import (
"errors"
"math/big"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/flags"
"github.com/cosmos/cosmos-sdk/client/tx"
"github.com/cosmos/cosmos-sdk/server"
"github.com/cosmos/cosmos-sdk/server/config"
sdk "github.com/cosmos/cosmos-sdk/types"
authtx "github.com/cosmos/cosmos-sdk/x/auth/tx"
distributiontypes "github.com/cosmos/cosmos-sdk/x/distribution/types"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/tendermint/tendermint/libs/log"
tmtypes "github.com/tendermint/tendermint/types"
"github.com/tharsis/ethermint/ethereum/rpc/backend"
rpctypes "github.com/tharsis/ethermint/ethereum/rpc/types"
)
// API is the miner prefixed set of APIs in the Miner JSON-RPC spec.
type API struct {
ctx *server.Context
logger log.Logger
clientCtx client.Context
backend backend.Backend
}
// NewMinerAPI creates an instance of the Miner API.
func NewMinerAPI(
ctx *server.Context,
clientCtx client.Context,
backend backend.Backend,
) *API {
return &API{
ctx: ctx,
clientCtx: clientCtx,
logger: ctx.Logger.With("api", "miner"),
backend: backend,
}
}
// SetEtherbase sets the etherbase of the miner
func (api *API) SetEtherbase(etherbase common.Address) bool {
api.logger.Debug("miner_setEtherbase")
delAddr, err := api.backend.GetCoinbase()
if err != nil {
api.logger.Debug("failed to get coinbase address", "error", err.Error())
return false
}
withdrawAddr := sdk.AccAddress(etherbase.Bytes())
msg := distributiontypes.NewMsgSetWithdrawAddress(delAddr, withdrawAddr)
if err := msg.ValidateBasic(); err != nil {
api.logger.Debug("tx failed basic validation", "error", err.Error())
return false
}
// Assemble transaction from fields
builder, ok := api.clientCtx.TxConfig.NewTxBuilder().(authtx.ExtensionOptionsTxBuilder)
if !ok {
api.logger.Debug("clientCtx.TxConfig.NewTxBuilder returns unsupported builder", "error", err.Error())
return false
}
err = builder.SetMsgs(msg)
if err != nil {
api.logger.Error("builder.SetMsgs failed", "error", err.Error())
return false
}
// Fetch minimun gas price to calculate fees using the configuration.
appConf, err := config.ParseConfig(api.ctx.Viper)
if err != nil {
api.logger.Error("failed to parse file.", "file", api.ctx.Viper.ConfigFileUsed(), "error:", err.Error())
return false
}
minGasPrices := appConf.GetMinGasPrices()
if len(minGasPrices) == 0 || minGasPrices.Empty() {
api.logger.Debug("the minimun fee is not set")
return false
}
minGasPriceValue := minGasPrices[0].Amount
denom := minGasPrices[0].Denom
delCommonAddr := common.BytesToAddress(delAddr.Bytes())
nonce, err := api.backend.GetTransactionCount(delCommonAddr, rpctypes.EthPendingBlockNumber)
if err != nil {
api.logger.Debug("failed to get nonce", "error", err.Error())
return false
}
txFactory := tx.Factory{}
txFactory = txFactory.
WithChainID(api.clientCtx.ChainID).
WithKeybase(api.clientCtx.Keyring).
WithTxConfig(api.clientCtx.TxConfig).
WithSequence(uint64(*nonce)).
WithGasAdjustment(1.25)
_, gas, err := tx.CalculateGas(api.clientCtx, txFactory, msg)
if err != nil {
api.logger.Debug("failed to calculate gas", "error", err.Error())
return false
}
txFactory = txFactory.WithGas(gas)
value := new(big.Int).SetUint64(gas * minGasPriceValue.Ceil().TruncateInt().Uint64())
fees := sdk.Coins{sdk.NewCoin(denom, sdk.NewIntFromBigInt(value))}
builder.SetFeeAmount(fees)
builder.SetGasLimit(gas)
keyInfo, err := api.clientCtx.Keyring.KeyByAddress(delAddr)
if err != nil {
api.logger.Debug("failed to get the wallet address using the keyring", "error", err.Error())
return false
}
if err := tx.Sign(txFactory, keyInfo.GetName(), builder, false); err != nil {
api.logger.Debug("failed to sign tx", "error", err.Error())
return false
}
// Encode transaction by default Tx encoder
txEncoder := api.clientCtx.TxConfig.TxEncoder()
txBytes, err := txEncoder(builder.GetTx())
if err != nil {
api.logger.Debug("failed to encode eth tx using default encoder", "error", err.Error())
return false
}
tmHash := common.BytesToHash(tmtypes.Tx(txBytes).Hash())
// Broadcast transaction in sync mode (default)
// NOTE: If error is encountered on the node, the broadcast will not return an error
syncCtx := api.clientCtx.WithBroadcastMode(flags.BroadcastSync)
rsp, err := syncCtx.BroadcastTx(txBytes)
if err != nil || rsp.Code != 0 {
if err == nil {
err = errors.New(rsp.RawLog)
}
api.logger.Debug("failed to broadcast tx", "error", err.Error())
return false
}
api.logger.Debug("broadcasted tx to set miner withdraw address (etherbase)", "hash", tmHash.String())
return true
}
// SetGasPrice sets the minimum accepted gas price for the miner.
// NOTE: this function accepts only integers to have the same interface than go-eth
// to use float values, the gas prices must be configured using the configuration file
func (api *API) SetGasPrice(gasPrice hexutil.Big) bool {
api.logger.Info(api.ctx.Viper.ConfigFileUsed())
appConf, err := config.ParseConfig(api.ctx.Viper)
if err != nil {
api.logger.Debug("failed to parse config file", "file", api.ctx.Viper.ConfigFileUsed(), "error", err.Error())
return false
}
var unit string
minGasPrices := appConf.GetMinGasPrices()
// fetch the base denom from the sdk Config in case it's not currently defined on the node config
if len(minGasPrices) == 0 || minGasPrices.Empty() {
unit, err = sdk.GetBaseDenom()
if err != nil {
api.logger.Debug("could not get the denom of smallest unit registered", "error", err.Error())
return false
}
} else {
unit = minGasPrices[0].Denom
}
c := sdk.NewDecCoin(unit, sdk.NewIntFromBigInt(gasPrice.ToInt()))
appConf.SetMinGasPrices(sdk.DecCoins{c})
config.WriteConfigFile(api.ctx.Viper.ConfigFileUsed(), appConf)
api.logger.Info("Your configuration file was modified. Please RESTART your node.", "gas-price", c.String())
return true
}