286 lines
8.5 KiB
Go
286 lines
8.5 KiB
Go
// Copyright 2020 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 miner implements Ethereum block creation and mining.
|
|
package miner
|
|
|
|
import (
|
|
"errors"
|
|
"math/big"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/consensus/clique"
|
|
"github.com/ethereum/go-ethereum/core"
|
|
"github.com/ethereum/go-ethereum/core/rawdb"
|
|
"github.com/ethereum/go-ethereum/core/state"
|
|
"github.com/ethereum/go-ethereum/core/txpool"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
"github.com/ethereum/go-ethereum/eth/downloader"
|
|
"github.com/ethereum/go-ethereum/event"
|
|
"github.com/ethereum/go-ethereum/trie"
|
|
)
|
|
|
|
type mockBackend struct {
|
|
bc *core.BlockChain
|
|
txPool *txpool.TxPool
|
|
}
|
|
|
|
func NewMockBackend(bc *core.BlockChain, txPool *txpool.TxPool) *mockBackend {
|
|
return &mockBackend{
|
|
bc: bc,
|
|
txPool: txPool,
|
|
}
|
|
}
|
|
|
|
func (m *mockBackend) BlockChain() *core.BlockChain {
|
|
return m.bc
|
|
}
|
|
|
|
func (m *mockBackend) TxPool() *txpool.TxPool {
|
|
return m.txPool
|
|
}
|
|
|
|
func (m *mockBackend) StateAtBlock(block *types.Block, reexec uint64, base *state.StateDB, checkLive bool, preferDisk bool) (statedb *state.StateDB, err error) {
|
|
return nil, errors.New("not supported")
|
|
}
|
|
|
|
type testBlockChain struct {
|
|
statedb *state.StateDB
|
|
gasLimit uint64
|
|
chainHeadFeed *event.Feed
|
|
}
|
|
|
|
func (bc *testBlockChain) CurrentBlock() *types.Header {
|
|
return &types.Header{
|
|
Number: new(big.Int),
|
|
GasLimit: bc.gasLimit,
|
|
}
|
|
}
|
|
|
|
func (bc *testBlockChain) GetBlock(hash common.Hash, number uint64) *types.Block {
|
|
return types.NewBlock(bc.CurrentBlock(), nil, nil, nil, trie.NewStackTrie(nil))
|
|
}
|
|
|
|
func (bc *testBlockChain) StateAt(common.Hash) (*state.StateDB, error) {
|
|
return bc.statedb, nil
|
|
}
|
|
|
|
func (bc *testBlockChain) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) event.Subscription {
|
|
return bc.chainHeadFeed.Subscribe(ch)
|
|
}
|
|
|
|
func TestMiner(t *testing.T) {
|
|
miner, mux, cleanup := createMiner(t)
|
|
defer cleanup(false)
|
|
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
// Start the downloader
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, false)
|
|
// Stop the downloader and wait for the update loop to run
|
|
mux.Post(downloader.DoneEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
|
|
// Subsequent downloader events after a successful DoneEvent should not cause the
|
|
// miner to start or stop. This prevents a security vulnerability
|
|
// that would allow entities to present fake high blocks that would
|
|
// stop mining operations by causing a downloader sync
|
|
// until it was discovered they were invalid, whereon mining would resume.
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
|
|
mux.Post(downloader.FailedEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
}
|
|
|
|
// TestMinerDownloaderFirstFails tests that mining is only
|
|
// permitted to run indefinitely once the downloader sees a DoneEvent (success).
|
|
// An initial FailedEvent should allow mining to stop on a subsequent
|
|
// downloader StartEvent.
|
|
func TestMinerDownloaderFirstFails(t *testing.T) {
|
|
miner, mux, cleanup := createMiner(t)
|
|
defer cleanup(false)
|
|
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
// Start the downloader
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, false)
|
|
|
|
// Stop the downloader and wait for the update loop to run
|
|
mux.Post(downloader.FailedEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
|
|
// Since the downloader hasn't yet emitted a successful DoneEvent,
|
|
// we expect the miner to stop on next StartEvent.
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, false)
|
|
|
|
// Downloader finally succeeds.
|
|
mux.Post(downloader.DoneEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
|
|
// Downloader starts again.
|
|
// Since it has achieved a DoneEvent once, we expect miner
|
|
// state to be unchanged.
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
|
|
mux.Post(downloader.FailedEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
}
|
|
|
|
func TestMinerStartStopAfterDownloaderEvents(t *testing.T) {
|
|
miner, mux, cleanup := createMiner(t)
|
|
defer cleanup(false)
|
|
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
// Start the downloader
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, false)
|
|
|
|
// Downloader finally succeeds.
|
|
mux.Post(downloader.DoneEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
|
|
miner.Stop()
|
|
waitForMiningState(t, miner, false)
|
|
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
|
|
miner.Stop()
|
|
waitForMiningState(t, miner, false)
|
|
}
|
|
|
|
func TestStartWhileDownload(t *testing.T) {
|
|
miner, mux, cleanup := createMiner(t)
|
|
defer cleanup(false)
|
|
waitForMiningState(t, miner, false)
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
// Stop the downloader and wait for the update loop to run
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, false)
|
|
// Starting the miner after the downloader should not work
|
|
miner.Start()
|
|
waitForMiningState(t, miner, false)
|
|
}
|
|
|
|
func TestStartStopMiner(t *testing.T) {
|
|
miner, _, cleanup := createMiner(t)
|
|
defer cleanup(false)
|
|
waitForMiningState(t, miner, false)
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
miner.Stop()
|
|
waitForMiningState(t, miner, false)
|
|
}
|
|
|
|
func TestCloseMiner(t *testing.T) {
|
|
miner, _, cleanup := createMiner(t)
|
|
defer cleanup(true)
|
|
waitForMiningState(t, miner, false)
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
// Terminate the miner and wait for the update loop to run
|
|
miner.Close()
|
|
waitForMiningState(t, miner, false)
|
|
}
|
|
|
|
// TestMinerSetEtherbase checks that etherbase becomes set even if mining isn't
|
|
// possible at the moment
|
|
func TestMinerSetEtherbase(t *testing.T) {
|
|
miner, mux, cleanup := createMiner(t)
|
|
defer cleanup(false)
|
|
miner.Start()
|
|
waitForMiningState(t, miner, true)
|
|
// Start the downloader
|
|
mux.Post(downloader.StartEvent{})
|
|
waitForMiningState(t, miner, false)
|
|
// Now user tries to configure proper mining address
|
|
miner.Start()
|
|
// Stop the downloader and wait for the update loop to run
|
|
mux.Post(downloader.DoneEvent{})
|
|
waitForMiningState(t, miner, true)
|
|
|
|
coinbase := common.HexToAddress("0xdeedbeef")
|
|
miner.SetEtherbase(coinbase)
|
|
if addr := miner.worker.etherbase(); addr != coinbase {
|
|
t.Fatalf("Unexpected etherbase want %x got %x", coinbase, addr)
|
|
}
|
|
}
|
|
|
|
// waitForMiningState waits until either
|
|
// * the desired mining state was reached
|
|
// * a timeout was reached which fails the test
|
|
func waitForMiningState(t *testing.T, m *Miner, mining bool) {
|
|
t.Helper()
|
|
|
|
var state bool
|
|
for i := 0; i < 100; i++ {
|
|
time.Sleep(10 * time.Millisecond)
|
|
if state = m.Mining(); state == mining {
|
|
return
|
|
}
|
|
}
|
|
t.Fatalf("Mining() == %t, want %t", state, mining)
|
|
}
|
|
|
|
func createMiner(t *testing.T) (*Miner, *event.TypeMux, func(skipMiner bool)) {
|
|
// Create Ethash config
|
|
config := Config{
|
|
Etherbase: common.HexToAddress("123456789"),
|
|
}
|
|
// Create chainConfig
|
|
chainDB := rawdb.NewMemoryDatabase()
|
|
genesis := core.DeveloperGenesisBlock(15, 11_500_000, common.HexToAddress("12345"))
|
|
chainConfig, _, err := core.SetupGenesisBlock(chainDB, trie.NewDatabase(chainDB), genesis)
|
|
if err != nil {
|
|
t.Fatalf("can't create new chain config: %v", err)
|
|
}
|
|
// Create consensus engine
|
|
engine := clique.New(chainConfig.Clique, chainDB)
|
|
// Create Ethereum backend
|
|
bc, err := core.NewBlockChain(chainDB, nil, genesis, nil, engine, vm.Config{}, nil, nil)
|
|
if err != nil {
|
|
t.Fatalf("can't create new chain %v", err)
|
|
}
|
|
statedb, _ := state.New(types.EmptyRootHash, state.NewDatabase(chainDB), nil)
|
|
blockchain := &testBlockChain{statedb, 10000000, new(event.Feed)}
|
|
|
|
pool := txpool.NewTxPool(testTxPoolConfig, chainConfig, blockchain)
|
|
backend := NewMockBackend(bc, pool)
|
|
// Create event Mux
|
|
mux := new(event.TypeMux)
|
|
// Create Miner
|
|
miner := New(backend, &config, chainConfig, mux, engine, nil)
|
|
cleanup := func(skipMiner bool) {
|
|
bc.Stop()
|
|
engine.Close()
|
|
pool.Stop()
|
|
if !skipMiner {
|
|
miner.Close()
|
|
}
|
|
}
|
|
return miner, mux, cleanup
|
|
}
|