254 lines
9.3 KiB
Go
254 lines
9.3 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"bytes"
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"encoding/hex"
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"fmt"
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"math/big"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/consensus"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/state/pruner"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/ethdb/leveldb"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/triedb"
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)
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var (
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canonicalSeed = 1
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blockPruneBackUpBlockNumber = 128
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key, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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address = crypto.PubkeyToAddress(key.PublicKey)
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balance = big.NewInt(100000000000000000)
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gspec = &core.Genesis{Config: params.TestChainConfig, Alloc: core.GenesisAlloc{address: {Balance: balance}}, BaseFee: big.NewInt(params.InitialBaseFee)}
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signer = types.LatestSigner(gspec.Config)
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config = &core.CacheConfig{
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TrieCleanLimit: 256,
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TrieDirtyLimit: 256,
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TrieTimeLimit: 5 * time.Minute,
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SnapshotLimit: 0, // Disable snapshot
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TriesInMemory: 128,
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}
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engine = ethash.NewFullFaker()
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)
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func TestOfflineBlockPrune(t *testing.T) {
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//Corner case for 0 remain in ancinetStore.
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testOfflineBlockPruneWithAmountReserved(t, 0)
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//General case.
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testOfflineBlockPruneWithAmountReserved(t, 100)
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}
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func NewLevelDBDatabaseWithFreezer(file string, cache int, handles int, ancient string, namespace string, readonly, disableFreeze, isLastOffset, pruneAncientData bool) (ethdb.Database, error) {
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kvdb, err := leveldb.New(file, cache, handles, namespace, readonly)
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if err != nil {
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return nil, err
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}
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frdb, err := rawdb.NewDatabaseWithFreezer(kvdb, ancient, namespace, readonly, disableFreeze, isLastOffset, pruneAncientData)
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if err != nil {
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kvdb.Close()
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return nil, err
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}
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return frdb, nil
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}
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func testOfflineBlockPruneWithAmountReserved(t *testing.T, amountReserved uint64) {
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datadir := t.TempDir()
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chaindbPath := filepath.Join(datadir, "chaindata")
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oldAncientPath := filepath.Join(chaindbPath, "ancient")
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newAncientPath := filepath.Join(chaindbPath, "ancient_back")
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db, blocks, blockList, receiptsList, externTdList, startBlockNumber, _ := BlockchainCreator(t, chaindbPath, oldAncientPath, amountReserved)
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node, _ := startEthService(t, gspec, blocks, chaindbPath)
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defer node.Close()
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//Initialize a block pruner for pruning, only remain amountReserved blocks backward.
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testBlockPruner := pruner.NewBlockPruner(db, node, oldAncientPath, newAncientPath, amountReserved)
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if err := testBlockPruner.BlockPruneBackUp(chaindbPath, 512, utils.MakeDatabaseHandles(0), "", false, false); err != nil {
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t.Fatalf("Failed to back up block: %v", err)
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}
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dbBack, err := NewLevelDBDatabaseWithFreezer(chaindbPath, 0, 0, newAncientPath, "", false, true, false, false)
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if err != nil {
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t.Fatalf("failed to create database with ancient backend")
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}
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defer dbBack.Close()
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//check against if the backup data matched original one
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for blockNumber := startBlockNumber; blockNumber < startBlockNumber+amountReserved; blockNumber++ {
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blockHash := rawdb.ReadCanonicalHash(dbBack, blockNumber)
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block := rawdb.ReadBlock(dbBack, blockHash, blockNumber)
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if block.Hash() != blockHash {
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t.Fatalf("block data did not match between oldDb and backupDb")
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}
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if blockList[blockNumber-startBlockNumber].Hash() != blockHash {
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t.Fatalf("block data did not match between oldDb and backupDb")
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}
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receipts := rawdb.ReadRawReceipts(dbBack, blockHash, blockNumber)
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if err := checkReceiptsRLP(receipts, receiptsList[blockNumber-startBlockNumber]); err != nil {
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t.Fatalf("receipts did not match between oldDb and backupDb")
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}
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// // Calculate the total difficulty of the block
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td := rawdb.ReadTd(dbBack, blockHash, blockNumber)
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if td == nil {
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t.Fatalf("Failed to ReadTd: %v", consensus.ErrUnknownAncestor)
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}
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if td.Cmp(externTdList[blockNumber-startBlockNumber]) != 0 {
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t.Fatalf("externTd did not match between oldDb and backupDb")
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}
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}
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//check if ancientDb freezer replaced successfully
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testBlockPruner.AncientDbReplacer()
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if _, err := os.Stat(newAncientPath); err != nil {
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if !os.IsNotExist(err) {
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t.Fatalf("ancientDb replaced unsuccessfully")
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}
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}
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if _, err := os.Stat(oldAncientPath); err != nil {
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t.Fatalf("ancientDb replaced unsuccessfully")
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}
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}
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func BlockchainCreator(t *testing.T, chaindbPath, AncientPath string, blockRemain uint64) (ethdb.Database, []*types.Block, []*types.Block, []types.Receipts, []*big.Int, uint64, *core.BlockChain) {
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//create a database with ancient freezer
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db, err := NewLevelDBDatabaseWithFreezer(chaindbPath, 0, 0, AncientPath, "", false, false, false, false)
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if err != nil {
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t.Fatalf("failed to create database with ancient backend")
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}
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defer db.Close()
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triedb := triedb.NewDatabase(db, nil)
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defer triedb.Close()
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genesis := gspec.MustCommit(db, triedb)
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// Initialize a fresh chain with only a genesis block
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blockchain, err := core.NewBlockChain(db, config, gspec, nil, engine, vm.Config{}, nil, nil)
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if err != nil {
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t.Fatalf("Failed to create chain: %v", err)
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}
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// Make chain starting from genesis
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blocks, _ := core.GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, 500, func(i int, block *core.BlockGen) {
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block.SetCoinbase(common.Address{0: byte(canonicalSeed), 19: byte(i)})
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tx, err := types.SignTx(types.NewTransaction(block.TxNonce(address), common.Address{0x00}, big.NewInt(1000), params.TxGas, big.NewInt(params.InitialBaseFee), nil), signer, key)
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if err != nil {
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panic(err)
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}
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block.AddTx(tx)
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block.SetDifficulty(big.NewInt(1000000))
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})
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if _, err := blockchain.InsertChain(blocks); err != nil {
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t.Fatalf("Failed to import canonical chain start: %v", err)
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}
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// Force run a freeze cycle
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type freezer interface {
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Freeze(threshold uint64) error
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Ancients() (uint64, error)
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}
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db.(freezer).Freeze(10)
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frozen, err := db.Ancients()
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//make sure there're frozen items
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if err != nil || frozen == 0 {
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t.Fatalf("Failed to import canonical chain start: %v", err)
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}
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if frozen < blockRemain {
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t.Fatalf("block amount is not enough for pruning: %v", err)
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}
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oldOffSet := rawdb.ReadOffSetOfCurrentAncientFreezer(db)
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// Get the actual start block number.
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startBlockNumber := frozen - blockRemain + oldOffSet
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// Initialize the slice to buffer the block data left.
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blockList := make([]*types.Block, 0, blockPruneBackUpBlockNumber)
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receiptsList := make([]types.Receipts, 0, blockPruneBackUpBlockNumber)
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externTdList := make([]*big.Int, 0, blockPruneBackUpBlockNumber)
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// All ancient data within the most recent 128 blocks write into memory buffer for future new ancient_back directory usage.
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for blockNumber := startBlockNumber; blockNumber < frozen+oldOffSet; blockNumber++ {
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blockHash := rawdb.ReadCanonicalHash(db, blockNumber)
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block := rawdb.ReadBlock(db, blockHash, blockNumber)
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blockList = append(blockList, block)
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receipts := rawdb.ReadRawReceipts(db, blockHash, blockNumber)
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receiptsList = append(receiptsList, receipts)
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// Calculate the total difficulty of the block
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td := rawdb.ReadTd(db, blockHash, blockNumber)
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if td == nil {
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t.Fatalf("Failed to ReadTd: %v", consensus.ErrUnknownAncestor)
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}
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externTdList = append(externTdList, td)
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}
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return db, blocks, blockList, receiptsList, externTdList, startBlockNumber, blockchain
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}
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func checkReceiptsRLP(have, want types.Receipts) error {
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if len(have) != len(want) {
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return fmt.Errorf("receipts sizes mismatch: have %d, want %d", len(have), len(want))
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}
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for i := 0; i < len(want); i++ {
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rlpHave, err := rlp.EncodeToBytes(have[i])
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if err != nil {
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return err
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}
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rlpWant, err := rlp.EncodeToBytes(want[i])
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if err != nil {
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return err
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}
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if !bytes.Equal(rlpHave, rlpWant) {
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return fmt.Errorf("receipt #%d: receipt mismatch: have %s, want %s", i, hex.EncodeToString(rlpHave), hex.EncodeToString(rlpWant))
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}
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}
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return nil
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}
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// startEthService creates a full node instance for testing.
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func startEthService(t *testing.T, genesis *core.Genesis, blocks []*types.Block, chaindbPath string) (*node.Node, *eth.Ethereum) {
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t.Helper()
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n, err := node.New(&node.Config{DataDir: chaindbPath})
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if err != nil {
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t.Fatal("can't create node:", err)
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}
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if err := n.Start(); err != nil {
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t.Fatal("can't start node:", err)
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}
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return n, nil
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}
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