How to use deserializeDB method of db Package

Best Syzkaller code snippet using db.deserializeDB

db.go

Source:db.go

...34	f, err := os.OpenFile(db.filename, os.O_RDONLY|os.O_CREATE, 0640)35	if err != nil {36		return nil, err37	}38	db.Records, db.uncompacted = deserializeDB(bufio.NewReader(f))39	f.Close()40	if len(db.Records) == 0 || db.uncompacted/10*9 > len(db.Records) {41		db.compact()42	}43	return db, nil44}45func (db *DB) Save(key string, val []byte, seq uint64) {46	if seq == seqDeleted {47		panic("reserved seq")48	}49	if rec, ok := db.Records[key]; ok && seq == rec.Seq && bytes.Equal(val, rec.Val) {50		return51	}52	db.Records[key] = Record{val, seq}53	db.serialize(key, val, seq)54	db.uncompacted++55}56func (db *DB) Delete(key string) {57	if _, ok := db.Records[key]; !ok {58		return59	}60	delete(db.Records, key)61	db.serialize(key, nil, seqDeleted)62	db.uncompacted++63}64func (db *DB) Flush() error {65	if db.uncompacted/10*9 > len(db.Records) {66		db.compact()67		return nil68	}69	if db.pending == nil {70		return nil71	}72	f, err := os.OpenFile(db.filename, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0640)73	if err != nil {74		return err75	}76	defer f.Close()77	if _, err := f.Write(db.pending.Bytes()); err != nil {78		return err79	}80	db.pending = nil81	return nil82}83func (db *DB) compact() error {84	buf := new(bytes.Buffer)85	serializeHeader(buf)86	for key, rec := range db.Records {87		serializeRecord(buf, key, rec.Val, rec.Seq)88	}89	f, err := os.Create(db.filename + ".tmp")90	if err != nil {91		return err92	}93	defer f.Close()94	if _, err := f.Write(buf.Bytes()); err != nil {95		return err96	}97	f.Close()98	if err := os.Rename(f.Name(), db.filename); err != nil {99		return err100	}101	db.uncompacted = len(db.Records)102	db.pending = nil103	return nil104}105func (db *DB) serialize(key string, val []byte, seq uint64) {106	if db.pending == nil {107		db.pending = new(bytes.Buffer)108	}109	serializeRecord(db.pending, key, val, seq)110}111const (112	dbMagic    = uint32(0xbaddb)113	recMagic   = uint32(0xfee1bad)114	curVersion = uint32(1)115	seqDeleted = ^uint64(0)116)117func serializeHeader(w *bytes.Buffer) {118	binary.Write(w, binary.LittleEndian, dbMagic)119	binary.Write(w, binary.LittleEndian, curVersion)120}121func serializeRecord(w *bytes.Buffer, key string, val []byte, seq uint64) {122	binary.Write(w, binary.LittleEndian, recMagic)123	binary.Write(w, binary.LittleEndian, uint32(len(key)))124	w.WriteString(key)125	binary.Write(w, binary.LittleEndian, seq)126	if seq == seqDeleted {127		if len(val) != 0 {128			panic("deleting record with value")129		}130		return131	}132	if len(val) == 0 {133		binary.Write(w, binary.LittleEndian, uint32(len(val)))134	} else {135		lenPos := len(w.Bytes())136		binary.Write(w, binary.LittleEndian, uint32(0))137		startPos := len(w.Bytes())138		fw, err := flate.NewWriter(w, flate.BestCompression)139		if err != nil {140			panic(err)141		}142		if _, err := fw.Write(val); err != nil {143			panic(err)144		}145		fw.Flush()146		fw.Close()147		binary.Write(bytes.NewBuffer(w.Bytes()[lenPos:lenPos:lenPos+8]), binary.LittleEndian, uint32(len(w.Bytes())-startPos))148	}149}150func deserializeDB(r *bufio.Reader) (records map[string]Record, uncompacted int) {151	records = make(map[string]Record)152	ver, err := deserializeHeader(r)153	if err != nil {154		Logf(0, "failed to deserialize database header: %v", err)155		return156	}157	_ = ver158	for {159		key, val, seq, err := deserializeRecord(r)160		if err == io.EOF {161			return162		}163		if err != nil {164			Logf(0, "failed to deserialize database record: %v", err)...

activity.go

Source:activity.go

...64		return nil, fmt.Errorf("failed updating config: %w", err)65	}66	// Deserialize if there is a previously serialized version67	if len(req.PrevRunSnapshot) > 0 {68		if err := h.deserializeDB(ctx, req.PrevRunSnapshot); err != nil {69			return nil, fmt.Errorf("failed deserializing previous snapshot: %w", err)70		}71	}72	// Start the metrics73	metricErrCh := make(chan error, 1)74	go func() { metricErrCh <- h.metricManager.run(ctx) }()75	// Run until context closed or worker stopped76	var metricErr error77	metricManagerDone := false78	select {79	case <-ctx.Done():80	case <-activity.GetWorkerStopChannel(ctx):81	case metricErr = <-metricErrCh:82		metricManagerDone = true83		// If the context isn't done, return this as an error84		if ctx.Err() == nil {85			return nil, metricErr86		}87	}88	// If metric manager not done, wait just a bit89	cancel()90	if !metricManagerDone {91		select {92		case <-time.After(10 * time.Second):93			return nil, fmt.Errorf("metric manager did not complete after 10 seconds")94		case <-metricErrCh:95			// We don't care about the error96		}97	}98	// Serialize the DB and return99	panic("TODO")100}101func (h *host) close() {102	if h.dbPool != nil {103		// Ignore error104		h.dbPool.Close()105	}106	h.prevSer = nil107}108func (h *host) deserializeDB(ctx context.Context, b []byte) error {109	// Uncompress110	r := lz4.NewReader(bytes.NewReader(b))111	b, err := io.ReadAll(r)112	if err != nil {113		return err114	}115	// Need to store a reference to this (we accept this isn't thread safe)116	h.prevSer = sqlite.NewSerialized("", b, true)117	db := h.dbPool.Get(ctx)118	defer h.dbPool.Put(db)119	return db.Deserialize(h.prevSer, sqlite.SQLITE_DESERIALIZE_FREEONCLOSE|sqlite.SQLITE_DESERIALIZE_RESIZEABLE)120}121func (h *host) updateConfig(ctx context.Context, req *monitoralpb.HostUpdateConfigRequest) error {122	panic("TODO")...

deserializeDB

Using AI Code Generation

1import (2func main() {3	db := db{}4	db.deserializeDB()5	fmt.Println(db)6}7import (8func main() {9	db := db{}10	db.deserializeDB()11	fmt.Println(db)12}13import (14func main() {15	db := db{}16	db.deserializeDB()17	fmt.Println(db)18}19import (20func main() {21	db := db{}22	db.deserializeDB()23	fmt.Println(db)24}25import (26func main() {27	db := db{}28	db.deserializeDB()29	fmt.Println(db)30}31import (32func main() {33	db := db{}34	db.deserializeDB()35	fmt.Println(db)36}37import (38func main() {39	db := db{}40	db.deserializeDB()41	fmt.Println(db)42}43import (44func main() {45	db := db{}46	db.deserializeDB()47	fmt.Println(db)48}49import (50func main() {51	db := db{}52	db.deserializeDB()53	fmt.Println(db)54}55import (56func main() {57	db := db{}58	db.deserializeDB()59	fmt.Println(db)60}61import (62func main() {63	db := db{}64	db.deserializeDB()65	fmt.Println(db)66}67import (68func main() {

deserializeDB

Using AI Code Generation

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

deserializeDB

Using AI Code Generation

1import (2func main() {3    db.DeserializeDB()4    fmt.Printf("%+v", db)5}6{Tables:[{Name:table1 Columns:[{Name:column1 Type:varchar(10) IsPrimary:true IsNullable:false IsForeignKey:false ForeignKeyTable: ForeignKeyColumn:} {Name:column2 Type:int IsPrimary:false IsNullable:false IsForeignKey:false ForeignKeyTable: ForeignKeyColumn:} {Name:column3 Type:varchar(10) IsPrimary:false IsNullable:false IsForeignKey:false ForeignKeyTable: ForeignKeyColumn:}]} {Name:table2 Columns:[{Name:column1 Type:int IsPrimary:true IsNullable:false IsForeignKey:false ForeignKeyTable: ForeignKeyColumn:} {Name:column2 Type:varchar(10) IsPrimary:false IsNullable:false IsForeignKey:false ForeignKeyTable: ForeignKeyColumn:} {Name:column3 Type:int IsPrimary:false IsNullable:false IsForeignKey:false ForeignKeyTable: ForeignKeyColumn:}]}]}7decoder := json.NewDecoder(r)8err := decoder.Decode(&table)9type Table struct {10}11type User struct {12}13type User struct {14}15func DeserializeUser(data []byte) *User {16    user := new(User)17    json.Unmarshal(data, user)18}

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