go-pulse/eth/catalyst/simulated_beacon_api.go
Marius van der Wijden 2d08c99009
ethclient/simulated: implement new sim backend (#28202)
This is a rewrite of the 'simulated backend', an implementation of the ethclient interfaces
which is backed by a simulated blockchain. It was getting annoying to maintain the old
version of the simulated backend feature because there was a lot of code duplication with
the main client. 

The new version is built using parts that we already have: an in-memory geth node instance
running in developer mode provides the chain, while the Go API is provided by ethclient.
A backwards-compatibility wrapper is provided, but the simulated backend has also moved to
a more sensible import path: github.com/ethereum/go-ethereum/ethclient/simulated

---------

Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: Gary Rong <garyrong0905@gmail.com>
2024-01-10 16:45:08 +01:00

62 lines
1.8 KiB
Go

// Copyright 2023 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package catalyst
import (
"context"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/log"
)
type api struct {
sim *SimulatedBeacon
}
func (a *api) loop() {
var (
newTxs = make(chan core.NewTxsEvent)
sub = a.sim.eth.TxPool().SubscribeTransactions(newTxs, true)
)
defer sub.Unsubscribe()
for {
select {
case <-a.sim.shutdownCh:
return
case w := <-a.sim.withdrawals.pending:
withdrawals := append(a.sim.withdrawals.gatherPending(9), w)
if err := a.sim.sealBlock(withdrawals, uint64(time.Now().Unix())); err != nil {
log.Warn("Error performing sealing work", "err", err)
}
case <-newTxs:
a.sim.Commit()
}
}
}
func (a *api) AddWithdrawal(ctx context.Context, withdrawal *types.Withdrawal) error {
return a.sim.withdrawals.add(withdrawal)
}
func (a *api) SetFeeRecipient(ctx context.Context, feeRecipient common.Address) {
a.sim.setFeeRecipient(feeRecipient)
}