package keeper import ( "context" "fmt" "github.com/palantir/stacktrace" tmbytes "github.com/tendermint/tendermint/libs/bytes" tmtypes "github.com/tendermint/tendermint/types" sdk "github.com/cosmos/cosmos-sdk/types" "github.com/tharsis/ethermint/x/evm/types" ) var _ types.MsgServer = &Keeper{} // EthereumTx implements the gRPC MsgServer interface. It receives a transaction which is then // executed (i.e applied) against the go-ethereum EVM. The provided SDK Context is set to the Keeper // so that it can implements and call the StateDB methods without receiving it as a function // parameter. func (k *Keeper) EthereumTx(goCtx context.Context, msg *types.MsgEthereumTx) (*types.MsgEthereumTxResponse, error) { ctx := sdk.UnwrapSDKContext(goCtx) k.WithContext(ctx) sender := msg.From tx := msg.AsTransaction() response, err := k.ApplyTransaction(tx) if err != nil { return nil, stacktrace.Propagate(err, "failed to apply transaction") } attrs := []sdk.Attribute{ sdk.NewAttribute(sdk.AttributeKeyAmount, tx.Value().String()), // add event for ethereum transaction hash format sdk.NewAttribute(types.AttributeKeyEthereumTxHash, response.Hash), } if len(ctx.TxBytes()) > 0 { // add event for tendermint transaction hash format hash := tmbytes.HexBytes(tmtypes.Tx(ctx.TxBytes()).Hash()) attrs = append(attrs, sdk.NewAttribute(types.AttributeKeyTxHash, hash.String())) } if tx.To() != nil { attrs = append(attrs, sdk.NewAttribute(types.AttributeKeyRecipient, tx.To().Hex())) } if response.Failed() { attrs = append(attrs, sdk.NewAttribute(types.AttributeKeyEthereumTxFailed, response.VmError)) } txLogAttrs := make([]sdk.Attribute, 0) for _, log := range response.Logs { bz := k.cdc.MustMarshal(log) txLogAttrs = append(txLogAttrs, sdk.NewAttribute(types.AttributeKeyTxLog, string(bz))) } // emit events ctx.EventManager().EmitEvents(sdk.Events{ sdk.NewEvent( types.EventTypeEthereumTx, attrs..., ), sdk.NewEvent( types.EventTypeTxLog, txLogAttrs..., ), sdk.NewEvent( sdk.EventTypeMessage, sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory), sdk.NewAttribute(sdk.AttributeKeySender, sender), sdk.NewAttribute(types.AttributeKeyTxType, fmt.Sprintf("%d", tx.Type())), ), }) return response, nil }