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How to use serializeRecord method of db Package

Best Syzkaller code snippet using db.serializeRecord

db.go

Source:db.go

...84func (db *DB) compact() error {85	buf := new(bytes.Buffer)86	serializeHeader(buf)87	for key, rec := range db.Records {88		serializeRecord(buf, key, rec.Val, rec.Seq)89	}90	f, err := os.Create(db.filename + ".tmp")91	if err != nil {92		return err93	}94	defer f.Close()95	if _, err := f.Write(buf.Bytes()); err != nil {96		return err97	}98	f.Close()99	if err := os.Rename(f.Name(), db.filename); err != nil {100		return err101	}102	db.uncompacted = len(db.Records)103	db.pending = nil104	return nil105}106func (db *DB) serialize(key string, val []byte, seq uint64) {107	if db.pending == nil {108		db.pending = new(bytes.Buffer)109	}110	serializeRecord(db.pending, key, val, seq)111}112const (113	dbMagic    = uint32(0xbaddb)114	recMagic   = uint32(0xfee1bad)115	curVersion = uint32(1)116	seqDeleted = ^uint64(0)117)118func serializeHeader(w *bytes.Buffer) {119	binary.Write(w, binary.LittleEndian, dbMagic)120	binary.Write(w, binary.LittleEndian, curVersion)121}122func serializeRecord(w *bytes.Buffer, key string, val []byte, seq uint64) {123	binary.Write(w, binary.LittleEndian, recMagic)124	binary.Write(w, binary.LittleEndian, uint32(len(key)))125	w.WriteString(key)126	binary.Write(w, binary.LittleEndian, seq)127	if seq == seqDeleted {128		if len(val) != 0 {129			panic("deleting record with value")130		}131		return132	}133	if len(val) == 0 {134		binary.Write(w, binary.LittleEndian, uint32(len(val)))135	} else {136		lenPos := len(w.Bytes())137		binary.Write(w, binary.LittleEndian, uint32(0))138		startPos := len(w.Bytes())139		fw, err := flate.NewWriter(w, flate.BestCompression)140		if err != nil {141			panic(err)142		}143		if _, err := fw.Write(val); err != nil {144			panic(err)145		}146		fw.Flush()147		fw.Close()148		binary.Write(bytes.NewBuffer(w.Bytes()[lenPos:lenPos:lenPos+8]), binary.LittleEndian, uint32(len(w.Bytes())-startPos))149	}150}151func deserializeDB(r *bufio.Reader) (records map[string]Record, uncompacted int) {152	records = make(map[string]Record)153	ver, err := deserializeHeader(r)154	if err != nil {155		Logf(0, "failed to deserialize database header: %v", err)156		return157	}158	_ = ver159	for {160		key, val, seq, err := deserializeRecord(r)161		if err == io.EOF {162			return163		}164		if err != nil {165			Logf(0, "failed to deserialize database record: %v", err)166			return167		}168		uncompacted++169		if seq == seqDeleted {170			delete(records, key)171		} else {172			records[key] = Record{val, seq}173		}174	}175}176func deserializeHeader(r *bufio.Reader) (uint32, error) {177	var magic, ver uint32178	if err := binary.Read(r, binary.LittleEndian, &magic); err != nil {179		if err == io.EOF {180			return curVersion, nil181		}182		return 0, err183	}184	if magic != dbMagic {185		return 0, fmt.Errorf("bad db header: 0x%x", magic)186	}187	if err := binary.Read(r, binary.LittleEndian, &ver); err != nil {188		return 0, err189	}190	if ver == 0 || ver > curVersion {191		return 0, fmt.Errorf("bad db version: %v", ver)192	}193	return ver, nil194}195func deserializeRecord(r *bufio.Reader) (key string, val []byte, seq uint64, err error) {196	var magic uint32197	if err = binary.Read(r, binary.LittleEndian, &magic); err != nil {198		return199	}200	if magic != recMagic {201		err = fmt.Errorf("bad record header: 0x%x", magic)202		return203	}204	var keyLen uint32205	if err = binary.Read(r, binary.LittleEndian, &keyLen); err != nil {206		return207	}208	keyBuf := make([]byte, keyLen)209	if _, err = io.ReadFull(r, keyBuf); err != nil {...

serializeRecord

Using AI Code Generation

1import (2type DB struct {3}4func NewDB(path string) (*DB, error) {5    db, err := leveldb.OpenFile(path, &opt.Options{Strict: opt.DefaultStrict})6    if err != nil {7    }8    return &DB{db: db}, nil9}10func (db *DB) Close() {11    db.db.Close()12}13func (db *DB) Put(key, value []byte) error {14    return db.db.Put(key, value, nil)15}16func (db *DB) Get(key []byte) ([]byte, error) {17    return db.db.Get(key, nil)18}19func (db *DB) Delete(key []byte) error {20    return db.db.Delete(key, nil)21}22func (db *DB) BatchPut(kvs map[string]string) error {23    batch := new(leveldb.Batch)24    for k, v := range kvs {25        batch.Put([]byte(k), []byte(v))26    }27    return db.db.Write(batch, nil)28}29func (db *DB) BatchDelete(keys []string) error {30    batch := new(leveldb.Batch)31    for _, k := range keys {32        batch.Delete([]byte(k))33    }34    return db.db.Write(batch, nil)35}36func (db *DB) RangeGet(start, end string) (map[string]string, error) {37    iter := db.db.NewIterator(&util.Range{Start: []byte(start), Limit: []byte(end)}, nil)38    defer iter.Release()39    kvs := make(map[string]string)40    for iter.Next() {41        kvs[string(iter.Key())] = string(iter.Value())42    }43    return kvs, iter.Error()44}45func (db *DB) RangeDelete(start, end string) error {46    iter := db.db.NewIterator(&util.Range{Start: []byte(start), Limit: []byte(end)}, nil)47    defer iter.Release()48    batch := new(leveldb.Batch)49    for iter.Next() {50        batch.Delete(iter.Key())

serializeRecord

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println("Hello, world.")4}5import "fmt"6func main() {7    fmt.Println("Hello, world.")8}9import "fmt"10func main() {11    fmt.Println("Hello, world.")12}13import "fmt"14func main() {15    fmt.Println("Hello, world.")16}17import "fmt"18func main() {19    fmt.Println("Hello, world.")20}21import "fmt"22func main() {23    fmt.Println("Hello, world.")24}25import "fmt"26func main() {27    fmt.Println("Hello, world.")28}29import "fmt"30func main() {31    fmt.Println("Hello, world.")32}33import "fmt"34func main() {35    fmt.Println("Hello, world.")36}37import "fmt"38func main() {39    fmt.Println("Hello, world.")40}41import "fmt"42func main() {43    fmt.Println("Hello, world.")44}45import "fmt"46func main() {47    fmt.Println("Hello, world.")48}49import "fmt"50func main() {51    fmt.Println("Hello, world.")52}53import

serializeRecord

Using AI Code Generation

1import (2func main() {3	dbObj.Init()4	dbObj.SerializeRecord()5	fmt.Println("Done")6}7import (8type Database struct {9}10func (d *Database) Init() {11	d.Record = model.Record{12	}13}14func (d *Database) SerializeRecord() {15	serializedRecord := d.Record.Serialize()16	fmt.Println(serializedRecord)17}18import (19type Record struct {20}21func (r *Record) Serialize() string {22	byteArray, err := json.Marshal(r)23	if err != nil {24		fmt.Println("Error in serialization")25	}26	return string(byteArray)27}

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