laconicd/x/evm/types/callargs.go
yihuang 0020e4f2cd
grpc: add eth_call query command (#236)
* add eth_call query command

Implement EthCall grpc query api

Closes #229

add eth_call query command

fix codec issue

use query client

use grpc status error and codes

validate address length in grpc handler

* Update x/evm/types/callargs.go

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>
2021-07-09 09:04:46 +00:00

78 lines
2.1 KiB
Go

package types
import (
"fmt"
"math"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
ethtypes "github.com/ethereum/go-ethereum/core/types"
)
// copied from: https://github.com/ethereum/go-ethereum/blob/v1.10.3/internal/ethapi/api.go#L754
// CallArgs represents the arguments for a call.
type CallArgs struct {
From *common.Address `json:"from"`
To *common.Address `json:"to"`
Gas *hexutil.Uint64 `json:"gas"`
GasPrice *hexutil.Big `json:"gasPrice"`
Value *hexutil.Big `json:"value"`
Data *hexutil.Bytes `json:"data"`
AccessList *ethtypes.AccessList `json:"accessList"`
}
// ToMessage converts CallArgs to the Message type used by the core evm
func (args *CallArgs) ToMessage(globalGasCap uint64) ethtypes.Message {
// Set sender address or use zero address if none specified.
var addr common.Address
if args.From != nil {
addr = *args.From
}
// Set default gas & gas price if none were set
gas := globalGasCap
if gas == 0 {
gas = uint64(math.MaxUint64 / 2)
}
if args.Gas != nil {
gas = uint64(*args.Gas)
}
if globalGasCap != 0 && globalGasCap < gas {
// log.Warn("Caller gas above allowance, capping", "requested", gas, "cap", globalGasCap)
gas = globalGasCap
}
gasPrice := new(big.Int)
if args.GasPrice != nil {
gasPrice = args.GasPrice.ToInt()
}
value := new(big.Int)
if args.Value != nil {
value = args.Value.ToInt()
}
var data []byte
if args.Data != nil {
data = *args.Data
}
var accessList ethtypes.AccessList
if args.AccessList != nil {
accessList = *args.AccessList
}
msg := ethtypes.NewMessage(addr, args.To, 0, value, gas, gasPrice, data, accessList, false)
return msg
}
// String return the struct in a string format
func (args *CallArgs) String() string {
// Todo: There is currently a bug with hexutil.Big when the value its nil, printing would trigger an exception
return fmt.Sprintf("CallArgs{From:%v, To:%v, Gas:%v,"+
" Data:%v, AccessList:%v}",
args.From,
args.To,
args.Gas,
args.Data,
args.AccessList)
}