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- // Copyright 2015 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 eth
- import (
- "math/big"
- "sort"
- "sync"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/consensus/ethash"
- "github.com/ethereum/go-ethereum/core"
- "github.com/ethereum/go-ethereum/core/rawdb"
- "github.com/ethereum/go-ethereum/core/types"
- "github.com/ethereum/go-ethereum/core/vm"
- "github.com/ethereum/go-ethereum/crypto"
- "github.com/ethereum/go-ethereum/eth/downloader"
- "github.com/ethereum/go-ethereum/ethdb"
- "github.com/ethereum/go-ethereum/event"
- "github.com/ethereum/go-ethereum/params"
- )
- var (
- // testKey is a private key to use for funding a tester account.
- testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
- // testAddr is the Ethereum address of the tester account.
- testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
- )
- // testTxPool is a mock transaction pool that blindly accepts all transactions.
- // Its goal is to get around setting up a valid statedb for the balance and nonce
- // checks.
- type testTxPool struct {
- pool map[common.Hash]*types.Transaction // Hash map of collected transactions
- txFeed event.Feed // Notification feed to allow waiting for inclusion
- lock sync.RWMutex // Protects the transaction pool
- }
- // newTestTxPool creates a mock transaction pool.
- func newTestTxPool() *testTxPool {
- return &testTxPool{
- pool: make(map[common.Hash]*types.Transaction),
- }
- }
- // Has returns an indicator whether txpool has a transaction
- // cached with the given hash.
- func (p *testTxPool) Has(hash common.Hash) bool {
- p.lock.Lock()
- defer p.lock.Unlock()
- return p.pool[hash] != nil
- }
- // Get retrieves the transaction from local txpool with given
- // tx hash.
- func (p *testTxPool) Get(hash common.Hash) *types.Transaction {
- p.lock.Lock()
- defer p.lock.Unlock()
- return p.pool[hash]
- }
- // AddRemotes appends a batch of transactions to the pool, and notifies any
- // listeners if the addition channel is non nil
- func (p *testTxPool) AddRemotes(txs []*types.Transaction) []error {
- p.lock.Lock()
- defer p.lock.Unlock()
- for _, tx := range txs {
- p.pool[tx.Hash()] = tx
- }
- p.txFeed.Send(core.NewTxsEvent{Txs: txs})
- return make([]error, len(txs))
- }
- // Pending returns all the transactions known to the pool
- func (p *testTxPool) Pending() (map[common.Address]types.Transactions, error) {
- p.lock.RLock()
- defer p.lock.RUnlock()
- batches := make(map[common.Address]types.Transactions)
- for _, tx := range p.pool {
- from, _ := types.Sender(types.HomesteadSigner{}, tx)
- batches[from] = append(batches[from], tx)
- }
- for _, batch := range batches {
- sort.Sort(types.TxByNonce(batch))
- }
- return batches, nil
- }
- // SubscribeNewTxsEvent should return an event subscription of NewTxsEvent and
- // send events to the given channel.
- func (p *testTxPool) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.Subscription {
- return p.txFeed.Subscribe(ch)
- }
- // testHandler is a live implementation of the Ethereum protocol handler, just
- // preinitialized with some sane testing defaults and the transaction pool mocked
- // out.
- type testHandler struct {
- db ethdb.Database
- chain *core.BlockChain
- txpool *testTxPool
- handler *handler
- }
- // newTestHandler creates a new handler for testing purposes with no blocks.
- func newTestHandler() *testHandler {
- return newTestHandlerWithBlocks(0)
- }
- // newTestHandlerWithBlocks creates a new handler for testing purposes, with a
- // given number of initial blocks.
- func newTestHandlerWithBlocks(blocks int) *testHandler {
- // Create a database pre-initialize with a genesis block
- db := rawdb.NewMemoryDatabase()
- (&core.Genesis{
- Config: params.TestChainConfig,
- Alloc: core.GenesisAlloc{testAddr: {Balance: big.NewInt(1000000)}},
- }).MustCommit(db)
- chain, _ := core.NewBlockChain(db, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{}, nil, nil, nil)
- bs, _ := core.GenerateChain(params.TestChainConfig, chain.Genesis(), ethash.NewFaker(), db, blocks, nil)
- if _, err := chain.InsertChain(bs); err != nil {
- panic(err)
- }
- txpool := newTestTxPool()
- handler, _ := newHandler(&handlerConfig{
- Database: db,
- Chain: chain,
- TxPool: txpool,
- Network: 1,
- Sync: downloader.FastSync,
- BloomCache: 1,
- })
- handler.Start(1000)
- return &testHandler{
- db: db,
- chain: chain,
- txpool: txpool,
- handler: handler,
- }
- }
- // close tears down the handler and all its internal constructs.
- func (b *testHandler) close() {
- b.handler.Stop()
- b.chain.Stop()
- }
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