forked from cerc-io/laconicd-deprecated
84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
package evm
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import (
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"fmt"
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"runtime/debug"
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log "github.com/xlab/suplog"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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ethcmn "github.com/ethereum/go-ethereum/common"
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"github.com/cosmos/ethermint/x/evm/keeper"
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"github.com/cosmos/ethermint/x/evm/types"
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)
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// NewHandler returns a handler for Ethermint type messages.
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func NewHandler(k *keeper.Keeper) sdk.Handler {
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return func(ctx sdk.Context, msg sdk.Msg) (result *sdk.Result, err error) {
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defer Recover(&err)
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ctx = ctx.WithEventManager(sdk.NewEventManager())
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switch msg := msg.(type) {
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case *types.MsgEthereumTx:
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// execute state transition
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res, err := k.EthereumTx(sdk.WrapSDKContext(ctx), msg)
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if err != nil {
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return sdk.WrapServiceResult(ctx, res, err)
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} else if result, err = sdk.WrapServiceResult(ctx, res, nil); err != nil {
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return nil, err
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}
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// log state transition result
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var recipientLog string
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if res.ContractAddress != "" {
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recipientLog = fmt.Sprintf("contract address %s", res.ContractAddress)
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} else {
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var recipient string
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if to := msg.To(); to != nil {
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recipient = to.Hex()
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}
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recipientLog = fmt.Sprintf("recipient address %s", recipient)
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}
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sender := ethcmn.BytesToAddress(msg.GetFrom().Bytes())
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if res.Reverted {
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result.Log = "transaction reverted"
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log := fmt.Sprintf(
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"reverted EVM state transition; sender address %s; %s", sender.Hex(), recipientLog,
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)
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k.Logger(ctx).Info(log)
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} else {
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log := fmt.Sprintf(
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"executed EVM state transition; sender address %s; %s", sender.Hex(), recipientLog,
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)
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result.Log = log
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k.Logger(ctx).Info(log)
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}
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return result, nil
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default:
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err := sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized %s message type: %T", types.ModuleName, msg)
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return nil, err
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}
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}
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}
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func Recover(err *error) {
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if r := recover(); r != nil {
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*err = sdkerrors.Wrapf(sdkerrors.ErrPanic, "%v", r)
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if e, ok := r.(error); ok {
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log.WithError(e).Errorln("evm msg handler panicked with an error")
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log.Debugln(string(debug.Stack()))
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} else {
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log.Errorln(r)
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}
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}
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}
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