github.com/klaytn/klaytn@v1.12.1/blockchain/state_migration_test.go (about)

     1  // Copyright 2022 The klaytn Authors
     2  // This file is part of the klaytn library.
     3  //
     4  // The klaytn library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The klaytn library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the klaytn library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package blockchain
    18  
    19  import (
    20  	"bytes"
    21  	"os"
    22  	"testing"
    23  	"time"
    24  
    25  	"github.com/klaytn/klaytn/blockchain/vm"
    26  	"github.com/klaytn/klaytn/common"
    27  	"github.com/klaytn/klaytn/consensus/gxhash"
    28  	"github.com/klaytn/klaytn/log"
    29  	"github.com/klaytn/klaytn/params"
    30  	"github.com/klaytn/klaytn/storage/database"
    31  )
    32  
    33  func createLocalTestDB(t *testing.T) (string, database.DBManager) {
    34  	dir, err := os.MkdirTemp("", "klaytn-test-migration")
    35  	if err != nil {
    36  		t.Fatalf("failed to create a database: %v", err)
    37  	}
    38  	dbc := &database.DBConfig{Dir: dir, DBType: database.LevelDB, LevelDBCacheSize: 128, OpenFilesLimit: 128}
    39  	db := database.NewDBManager(dbc)
    40  	return dir, db
    41  }
    42  
    43  func TestBlockChain_migrateState(t *testing.T) {
    44  	log.EnableLogForTest(log.LvlCrit, log.LvlTrace)
    45  
    46  	dir, testdb := createLocalTestDB(t)
    47  	defer os.RemoveAll(dir)
    48  
    49  	var (
    50  		gspec = &Genesis{Config: params.TestChainConfig}
    51  		_     = gspec.MustCommit(testdb)
    52  	)
    53  
    54  	chain, err := NewBlockChain(testdb, nil, gspec.Config, gxhash.NewFaker(), vm.Config{})
    55  	if err != nil {
    56  		t.Fatalf("Failed to create local chain, %v", err)
    57  	}
    58  	defer chain.Stop()
    59  
    60  	chain.testMigrationHook = func() {
    61  		// sleep 2 seconds to write byte codes while migrating statedb
    62  		t.Log("taking 2 seconds for testing purpose...")
    63  		time.Sleep(2 * time.Second)
    64  	}
    65  
    66  	if err := chain.PrepareStateMigration(); err != nil {
    67  		t.Fatalf("failed to prepare state migration: %v", err)
    68  	}
    69  
    70  	b := chain.CurrentBlock()
    71  	if err := chain.StartStateMigration(b.NumberU64(), b.Root()); err != nil {
    72  		t.Fatalf("failed to start state migration: %v", err)
    73  	}
    74  
    75  	// write code while statedb migration
    76  	expectedCode := []byte{0x60, 0x80, 0x60, 0x40}
    77  	codeHash := common.BytesToHash(expectedCode)
    78  	chain.stateCache.TrieDB().DiskDB().WriteCode(codeHash, expectedCode)
    79  
    80  	for chain.db.InMigration() {
    81  		t.Log("It is in migration, sleeping 1 second")
    82  		time.Sleep(1 * time.Second)
    83  	}
    84  
    85  	// read code after deleting the original db
    86  	actualCode := chain.db.ReadCode(codeHash)
    87  	if actualCode == nil || bytes.Compare(expectedCode, actualCode) != 0 {
    88  		t.Fatalf("mismatch bytecodes: (expected: %v, actual: %v)", common.Bytes2Hex(expectedCode), common.Bytes2Hex(actualCode))
    89  	}
    90  }