9cbb4dcf6d
* changelog v0.4.0 * stargate: types changes * msg and handler changes * validation * fixes * more fixes * more test fixes * changelog * changelog * lint * rm comment * lint * redundant if condition
129 lines
3.4 KiB
Go
129 lines
3.4 KiB
Go
package evm
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import (
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"github.com/ethereum/go-ethereum/common"
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ethermint "github.com/cosmos/ethermint/types"
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"github.com/cosmos/ethermint/x/evm/types"
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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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tmtypes "github.com/tendermint/tendermint/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) sdk.Handler {
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return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
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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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return handleMsgEthereumTx(ctx, k, msg)
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case types.MsgEthermint:
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return handleMsgEthermint(ctx, k, msg)
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default:
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized %s message type: %T", ModuleName, msg)
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}
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}
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}
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// handleMsgEthereumTx handles an Ethereum specific tx
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func handleMsgEthereumTx(ctx sdk.Context, k Keeper, msg types.MsgEthereumTx) (*sdk.Result, error) {
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// execute state transition
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res, err := k.EthereumTx(ctx, msg)
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if 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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k.Logger(ctx).Info(res.Log)
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return res, nil
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}
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// handleMsgEthermint handles an sdk.StdTx for an Ethereum state transition
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func handleMsgEthermint(ctx sdk.Context, k Keeper, msg types.MsgEthermint) (*sdk.Result, error) {
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// parse the chainID from a string to a base-10 integer
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chainIDEpoch, err := ethermint.ParseChainID(ctx.ChainID())
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if err != nil {
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return nil, err
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}
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txHash := tmtypes.Tx(ctx.TxBytes()).Hash()
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ethHash := common.BytesToHash(txHash)
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st := types.StateTransition{
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AccountNonce: msg.AccountNonce,
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Price: msg.Price.BigInt(),
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GasLimit: msg.GasLimit,
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Amount: msg.Amount.BigInt(),
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Payload: msg.Payload,
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Csdb: k.CommitStateDB.WithContext(ctx),
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ChainID: chainIDEpoch,
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TxHash: ðHash,
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Sender: common.BytesToAddress(msg.From.Bytes()),
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Simulate: ctx.IsCheckTx(),
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}
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if msg.Recipient != nil {
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to := common.BytesToAddress(msg.Recipient.Bytes())
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st.Recipient = &to
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}
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if !st.Simulate {
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// Prepare db for logs
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blockHash := types.HashFromContext(ctx)
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k.CommitStateDB.Prepare(ethHash, blockHash, k.TxCount)
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k.TxCount++
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}
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config, found := k.GetChainConfig(ctx)
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if !found {
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return nil, types.ErrChainConfigNotFound
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}
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executionResult, err := st.TransitionDb(ctx, config)
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if err != nil {
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return nil, err
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}
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// update block bloom filter
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if !st.Simulate {
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k.Bloom.Or(k.Bloom, executionResult.Bloom)
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// update transaction logs in KVStore
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err = k.SetLogs(ctx, common.BytesToHash(txHash), executionResult.Logs)
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if err != nil {
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panic(err)
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}
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}
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// log successful execution
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k.Logger(ctx).Info(executionResult.Result.Log)
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ctx.EventManager().EmitEvents(sdk.Events{
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sdk.NewEvent(
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types.EventTypeEthermint,
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sdk.NewAttribute(sdk.AttributeKeyAmount, msg.Amount.String()),
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),
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sdk.NewEvent(
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sdk.EventTypeMessage,
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sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
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sdk.NewAttribute(sdk.AttributeKeySender, msg.From.String()),
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),
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})
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if msg.Recipient != nil {
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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types.EventTypeEthermint,
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sdk.NewAttribute(types.AttributeKeyRecipient, msg.Recipient.String()),
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),
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)
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}
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// set the events to the result
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executionResult.Result.Events = ctx.EventManager().Events()
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return executionResult.Result, nil
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}
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