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How to use BumpVersion method of db Package

Best Syzkaller code snippet using db.BumpVersion

db.go

Source:db.go

...84	}85	db.pending = nil86	return nil87}88func (db *DB) BumpVersion(version uint64) error {89	if db.Version == version {90		return db.Flush()91	}92	db.Version = version93	return db.compact()94}95func (db *DB) compact() error {96	buf := new(bytes.Buffer)97	serializeHeader(buf, db.Version)98	for key, rec := range db.Records {99		serializeRecord(buf, key, rec.Val, rec.Seq)100	}101	f, err := os.Create(db.filename + ".tmp")102	if err != nil {103		return err104	}105	defer f.Close()106	if _, err := f.Write(buf.Bytes()); err != nil {107		return err108	}109	f.Close()110	if err := osutil.Rename(f.Name(), db.filename); err != nil {111		return err112	}113	db.uncompacted = len(db.Records)114	db.pending = nil115	return nil116}117// Yang: compact several db files into one db, and sync to file system118func (db *DB) Merge(odb_lst []*DB) {119	if odb_lst == nil || len(odb_lst) == 0 {120		return121	}122	for _, odb := range odb_lst {123		for k, r := range odb.Records {124			db.Save(k, r.Val, r.Seq)125			// db.Records[k] = r126		}127	}128}129func (db *DB) serialize(key string, val []byte, seq uint64) {130	if db.pending == nil {131		db.pending = new(bytes.Buffer)132	}133	serializeRecord(db.pending, key, val, seq)134}135const (136	dbMagic    = uint32(0xbaddb)137	recMagic   = uint32(0xfee1bad)138	curVersion = uint32(2)139	seqDeleted = ^uint64(0)140)141func serializeHeader(w *bytes.Buffer, version uint64) {142	binary.Write(w, binary.LittleEndian, dbMagic)143	binary.Write(w, binary.LittleEndian, curVersion)144	binary.Write(w, binary.LittleEndian, version)145}146func serializeRecord(w *bytes.Buffer, key string, val []byte, seq uint64) {147	binary.Write(w, binary.LittleEndian, recMagic)148	binary.Write(w, binary.LittleEndian, uint32(len(key)))149	w.WriteString(key)150	binary.Write(w, binary.LittleEndian, seq)151	if seq == seqDeleted {152		if len(val) != 0 {153			panic("deleting record with value")154		}155		return156	}157	if len(val) == 0 {158		binary.Write(w, binary.LittleEndian, uint32(len(val)))159	} else {160		lenPos := len(w.Bytes())161		binary.Write(w, binary.LittleEndian, uint32(0))162		startPos := len(w.Bytes())163		fw, err := flate.NewWriter(w, flate.BestCompression)164		if err != nil {165			panic(err)166		}167		if _, err := fw.Write(val); err != nil {168			panic(err)169		}170		fw.Close()171		binary.Write(bytes.NewBuffer(w.Bytes()[lenPos:lenPos:lenPos+8]), binary.LittleEndian, uint32(len(w.Bytes())-startPos))172	}173}174func deserializeDB(r *bufio.Reader) (version uint64, records map[string]Record, uncompacted int) {175	records = make(map[string]Record)176	ver, err := deserializeHeader(r)177	if err != nil {178		log.Logf(0, "failed to deserialize database header: %v", err)179		return180	}181	version = ver182	for {183		key, val, seq, err := deserializeRecord(r)184		if err == io.EOF {185			return186		}187		if err != nil {188			log.Logf(0, "failed to deserialize database record: %v", err)189			return190		}191		uncompacted++192		if seq == seqDeleted {193			delete(records, key)194		} else {195			records[key] = Record{val, seq}196		}197	}198}199func deserializeHeader(r *bufio.Reader) (uint64, error) {200	var magic, ver uint32201	if err := binary.Read(r, binary.LittleEndian, &magic); err != nil {202		if err == io.EOF {203			return 0, nil204		}205		return 0, err206	}207	if magic != dbMagic {208		return 0, fmt.Errorf("bad db header: 0x%x", magic)209	}210	if err := binary.Read(r, binary.LittleEndian, &ver); err != nil {211		return 0, err212	}213	if ver == 0 || ver > curVersion {214		return 0, fmt.Errorf("bad db version: %v", ver)215	}216	var userVer uint64217	if ver >= 2 {218		if err := binary.Read(r, binary.LittleEndian, &userVer); err != nil {219			return 0, err220		}221	}222	return userVer, nil223}224func deserializeRecord(r *bufio.Reader) (key string, val []byte, seq uint64, err error) {225	var magic uint32226	if err = binary.Read(r, binary.LittleEndian, &magic); err != nil {227		return228	}229	if magic != recMagic {230		err = fmt.Errorf("bad record header: 0x%x", magic)231		return232	}233	var keyLen uint32234	if err = binary.Read(r, binary.LittleEndian, &keyLen); err != nil {235		return236	}237	keyBuf := make([]byte, keyLen)238	if _, err = io.ReadFull(r, keyBuf); err != nil {239		return240	}241	key = string(keyBuf)242	if err = binary.Read(r, binary.LittleEndian, &seq); err != nil {243		return244	}245	if seq == seqDeleted {246		return247	}248	var valLen uint32249	if err = binary.Read(r, binary.LittleEndian, &valLen); err != nil {250		return251	}252	if valLen != 0 {253		fr := flate.NewReader(&io.LimitedReader{R: r, N: int64(valLen)})254		if val, err = ioutil.ReadAll(fr); err != nil {255			return256		}257		fr.Close()258	}259	return260}261// Create creates a new database in the specified file with the specified records.262func Create(filename string, version uint64, records []Record) error {263	os.Remove(filename)264	db, err := Open(filename)265	if err != nil {266		return fmt.Errorf("failed to open database file: %v", err)267	}268	if err := db.BumpVersion(version); err != nil {269		return fmt.Errorf("failed to bump database version: %v", err)270	}271	for _, rec := range records {272		db.Save(hash.String(rec.Val), rec.Val, rec.Seq)273	}274	if err := db.Flush(); err != nil {275		return fmt.Errorf("failed to save database file: %v", err)276	}277	return nil278}279func ReadCorpus(filename string, target *prog.Target) (progs []*prog.Prog, err error) {280	if filename == "" {281		return282	}...

store.go

Source:store.go

...20func (s Store) Init() error {21	iter := s.Find(bson.M{}).Iter()22	var article Article23	for iter.Next(&article) {24		ok, err := article.BumpVersion()25		if err != nil {26			iter.Close()27			return err28		}29		if !ok {30			continue31		}32		err = s.UpdateOne(&article)33		if err != nil {34			return err35		}36	}37	return iter.Close()38}...

BumpVersion

Using AI Code Generation

1func main() {2    db := db.New()3    db.BumpVersion()4}5func main() {6    db := db.New()7    db.BumpVersion()8}9func main() {10    db := db.New()11    db.BumpVersion()12}13func main() {14    db := db.New()15    db.BumpVersion()16}17func main() {18    db := db.New()19    db.BumpVersion()20}21func main() {22    db := db.New()23    db.BumpVersion()24}25func main() {26    db := db.New()27    db.BumpVersion()28}29func main() {30    db := db.New()31    db.BumpVersion()32}33func main() {34    db := db.New()35    db.BumpVersion()36}37func main() {38    db := db.New()39    db.BumpVersion()40}41func main() {42    db := db.New()43    db.BumpVersion()44}45func main() {46    db := db.New()47    db.BumpVersion()48}49func main() {50    db := db.New()51    db.BumpVersion()52}53func main() {54    db := db.New()55    db.BumpVersion()56}

BumpVersion

Using AI Code Generation

1import (2func main() {3	db := db.DB{}4	db.BumpVersion()5	fmt.Println(db.Version)6}7import "fmt"8type DB struct {9}10func (db *DB) BumpVersion() {11	fmt.Println("BumpVersion called")12}13import (14func TestBumpVersion(t *testing.T) {15	db := DB{}16	db.BumpVersion()17	fmt.Println(db.Version)18}19func init() {20	fmt.Println("init called")21}

BumpVersion

Using AI Code Generation

1func main() {2    db := db.NewDB()3    db.BumpVersion()4}5type DB struct {6}7func NewDB() *DB {8    return &DB{9    }10}11func (d *DB) BumpVersion() {12}13What is the correct way to implement this? Should I put the BumpVersion method in the db.go file in the main package? Should I put the BumpVersion method in a third package, and import it into both the main package and the db package?

BumpVersion

Using AI Code Generation

1import (2func main() {3	db := db.Database{Version: "1.0"}4	fmt.Println(db.Version)5	db.BumpVersion()6	fmt.Println(db.Version)7}

BumpVersion

Using AI Code Generation

1import (2func main() {3    db, err := sql.Open("mysql", "root:root@/test")4    if err != nil {5        fmt.Println(err)6    }7    defer db.Close()8    db.BumpVersion()9}10./2.go:14: db.BumpVersion undefined (type *sql.DB has no field or method BumpVersion)11Your name to display (optional):12Your name to display (optional):13import (14func main() {15    db, err := sql.Open("mysql", "root:root@/test")16    if err != nil {17        fmt.Println(err)18    }19    defer db.Close()20    db.Exec("BumpVersion")21}22Your name to display (optional):

BumpVersion

Using AI Code Generation

1import (2func main() {3    db := db.New()4    db.BumpVersion()5    fmt.Println(db.Version)6}7import (8var db = db.New()9func main() {10    db.BumpVersion()11    fmt.Println(db.Version)12}13I'm not sure what you mean by "I need to use the same instance of db" but you can do that by defining db as a package level variable. Your code would look like this: package main import ( "fmt" "github.com/you/package" ) var db = db.New() func main() { db.BumpVersion() fmt.Println(db.Version) }14func main() {15    db = db.New()16}17func otherFunc() {18    db.BumpVersion()19}

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