How to use serializeHeader method of db Package

Best Syzkaller code snippet using db.serializeHeader

headers_test.go

Source:headers_test.go Github

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...61 totalWork: big.NewInt(1000),62 }63}64func TestSerializeHeader(t *testing.T) {65 b, err := serializeHeader(testSh1)66 if err != nil {67 t.Error(err)68 }69 var buf bytes.Buffer70 testHdr1.Serialize(&buf)71 if !bytes.Equal(buf.Bytes(), b[:80]) {72 t.Error("Failed to serialize header")73 }74 if !bytes.Equal([]byte{0x00, 0x00, 0x00, 0x64}, b[80:84]) {75 t.Error("Failed to serialize height")76 }77 if !bytes.Equal([]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,78 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,79 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xF4}, b[84:116]) {80 t.Error("Failed to serialize big int")81 }82}83func TestDeserializeHeader(t *testing.T) {84 height := []byte{0x00, 0x00, 0x00, 0x64}85 work := []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xf4}86 sh, err := deserializeHeader(append(header1Bytes, append(height, work...)...))87 if err != nil {88 t.Error(err)89 }90 shHash := sh.header.BlockHash()91 testHdrHash := testHdr1.BlockHash()92 if !testHdrHash.IsEqual(&shHash) {93 t.Error("Failed to serialize block header")94 }95 if sh.height != 100 {96 t.Error("Failed to serialize height")97 }98 if sh.totalWork.Cmp(big.NewInt(500)) != 0 {99 t.Error("Failed to serialize total work")100 }101}102func TestHeaderDB_put(t *testing.T) {103 headers, err := NewHeaderDB("")104 if err != nil {105 t.Error(err)106 }107 // Test put with new tip108 err = headers.put(testSh1, true)109 if err != nil {110 t.Error(err)111 }112 err = headers.db.View(func(btx *bolt.Tx) error {113 hdrs := btx.Bucket(BKTHeaders)114 testHash := testSh1.header.BlockHash()115 b := hdrs.Get(testHash.CloneBytes())116 if b == nil {117 t.Error("Header doesn't exist in db")118 }119 ser, err := serializeHeader(testSh1)120 if err != nil {121 return err122 }123 if !bytes.Equal(ser, b) {124 t.Error("Failed to PUT header correctly")125 }126 tip := btx.Bucket(BKTChainTip)127 if err != nil {128 return err129 }130 b = tip.Get(KEYChainTip)131 if b == nil {132 t.Error("Best tip doesn't exist in db")133 }134 ser, err = serializeHeader(testSh1)135 if err != nil {136 return err137 }138 if !bytes.Equal(ser, b) {139 t.Error("Best tip failed to PUT header correctly")140 }141 return nil142 })143 if err != nil {144 t.Error(err)145 }146 // Test header without new tip147 err = headers.put(testSh2, false)148 if err != nil {149 t.Error(err)150 }151 err = headers.db.View(func(btx *bolt.Tx) error {152 hdrs := btx.Bucket(BKTHeaders)153 testHash := testSh2.header.BlockHash()154 b := hdrs.Get(testHash.CloneBytes())155 if b == nil {156 t.Error("Header doesn't exist in db")157 }158 ser, err := serializeHeader(testSh2)159 if err != nil {160 return err161 }162 if !bytes.Equal(ser, b) {163 t.Error("Failed to PUT header correctly")164 }165 tip := btx.Bucket(BKTChainTip)166 if err != nil {167 return err168 }169 b = tip.Get(KEYChainTip)170 if b == nil {171 t.Error("Best tip doesn't exist in db")172 }173 ser, err = serializeHeader(testSh1)174 if err != nil {175 return err176 }177 if !bytes.Equal(ser, b) {178 t.Error("Best tip failed to PUT header correctly")179 }180 return nil181 })182 if err != nil {183 t.Error(err)184 }185 // Test put duplicate186 err = headers.put(testSh2, true)187 if err != nil {188 t.Error(err)189 }190 os.RemoveAll("headers.bin")191}192func TestHeaderDB_GetPreviousHeader(t *testing.T) {193 headers, err := NewHeaderDB("")194 if err != nil {195 t.Error(err)196 }197 err = headers.put(testSh1, false)198 if err != nil {199 t.Error(err)200 }201 hdr, err := headers.GetPreviousHeader(testSh2.header)202 if err != nil {203 t.Error(err)204 }205 shHash := testSh1.header.BlockHash()206 testHdrHash := hdr.header.BlockHash()207 if !testHdrHash.IsEqual(&shHash) {208 t.Error("Get previous header returned incorrect header")209 }210 os.RemoveAll("headers.bin")211}212func TestHeaderDB_GetBestHeader(t *testing.T) {213 headers, err := NewHeaderDB("")214 if err != nil {215 t.Error(err)216 }217 err = headers.put(testSh1, false)218 if err != nil {219 t.Error(err)220 }221 hdr, err := headers.GetBestHeader()222 if err == nil {223 t.Error("Didn't receive error when fetching best header without one set")224 }225 err = headers.put(testSh1, true)226 if err != nil {227 t.Error(err)228 }229 err = headers.put(testSh2, false)230 if err != nil {231 t.Error(err)232 }233 hdr, err = headers.GetBestHeader()234 if err != nil {235 t.Error(err)236 }237 testSer, err := serializeHeader(testSh1)238 if err != nil {239 t.Error(err)240 }241 ser, err := serializeHeader(hdr)242 if err != nil {243 t.Error(err)244 }245 if !bytes.Equal(testSer, ser) {246 t.Error("Failed to fetch best header from the db")247 }248 os.RemoveAll("headers.bin")249}250func TestHeaderDB_Height(t *testing.T) {251 headers, err := NewHeaderDB("")252 if err != nil {253 t.Error(err)254 }255 err = headers.put(testSh1, true)...

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serializeHeader

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1import (2func main() {3 db, err := badger.Open(opts)4 if err != nil {5 fmt.Println(err)6 }7 defer db.Close()8 err = db.View(func(txn *badger.Txn) error {9 item, err := txn.Get([]byte("answer"))10 if err != nil {11 }12 err = item.Value(func(val []byte) error {13 valCopy = append([]byte{}, val...)14 })15 if err != nil {16 }17 fmt.Printf("The answer is: %s\n", valCopy)18 })19 if err != nil {20 fmt.Println(err)21 }22}23import (24func main() {25 db, err := badger.Open(opts)26 if err != nil {27 fmt.Println(err)28 }29 defer db.Close()30 err = db.Update(func(txn *badger.Txn) error {31 err := txn.Set([]byte("answer"), []byte("42"))32 })33 if err != nil {34 fmt.Println(err)35 }36}

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serializeHeader

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

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serializeHeader

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1import (2func main() {3 db, err := badger.Open(badger.DefaultOptions("/tmp/badger"))4 if err != nil {5 log.Fatal(err)6 }7 defer db.Close()8 db.Update(func(txn *badger.Txn) error {9 err := txn.Set([]byte("answer"), []byte("42"))10 })11 err = db.View(func(txn *badger.Txn) error {12 item, err := txn.Get([]byte("answer"))13 if err != nil {14 }15 err = item.Value(func(val []byte) error {16 fmt.Printf("The answer is: %s\n", val)17 })18 })19 if err != nil {20 log.Fatal(err)21 }22}23import (24type Block struct {25}26func (b *Block) Serialize() []byte {27 encoder := gob.NewEncoder(&result)28 err := encoder.Encode(b)29 if err != nil {30 log.Panic(err)31 }32 return result.Bytes()33}34func DeserializeBlock(d []byte) *Block {35 decoder := gob.NewDecoder(bytes.NewReader(d))36 err := decoder.Decode(&block)37 if err != nil {38 log.Panic(err)39 }40}41func main() {42 db, err := badger.Open(badger.DefaultOptions("/tmp/badger"))43 if err != nil {44 log.Fatal(err)45 }46 defer db.Close()47 db.Update(func(txn *badger.Txn) error {48 err := txn.Set([]byte("answer"), []byte("42"))49 })50 err = db.View(func(txn *badger.Txn) error {51 item, err := txn.Get([]

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serializeHeader

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1import (2func main() {3 db := new(DB)4 serializedHeader := db.serializeHeader()5 fmt.Println("Serialized Header: ", serializedHeader)6 deserializedHeader := make(map[string]interface{})7 err := json.Unmarshal([]byte(serializedHeader), &deserializedHeader)8 if err != nil {9 log.Fatal(err)10 }11 fmt.Println("Deserialized Header: ", deserializedHeader)12}13type DB struct {14 header map[string]interface{}15}16func (db *DB) serializeHeader() string {17 serializedHeader, _ := json.Marshal(db.header)18 return string(serializedHeader)19}20type DB struct {21 header map[string]interface{}22}23func (db *DB) serializeHeader() string {24 serializedHeader, _ := json.Marshal(db.header)25 return string(serializedHeader)26}27type DB struct {28 header map[string]interface{}29}30func (db *DB) serializeHeader() string {31 serializedHeader, _ := json.Marshal(db.header)32 return string(serializedHeader)33}34type DB struct {35 header map[string]interface{}36}37func (db *DB) serializeHeader() string {38 serializedHeader, _ := json.Marshal(db.header)39 return string(serializedHeader)40}41type DB struct {

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serializeHeader

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1import (2type Blockchain struct {3}4type Block struct {5}6func DBExists() bool {7 if _, err := bolt.Open("blockchain.db", 0600, nil); err != nil {8 }9}10func CreateBlockChain(address string) *Blockchain {11 if DBExists() {12 fmt.Println("Blockchain already exists.")13 runtime.Goexit()14 }15 db, err := bolt.Open("blockchain.db", 0600, nil)16 Handle(err)17 err = db.Update(func(tx *bolt.Tx) error {18 cbtx := NewCoinbaseTX(address, "")19 genesis := NewGenesisBlock(cbtx)20 b, err := tx.CreateBucket([]byte(blocksBucket))21 Handle(err)22 err = b.Put(genesis.Hash, genesis.Serialize())23 Handle(err)24 err = b.Put([]byte("1"), genesis.Hash)25 Handle(err)26 })27 Handle(err)28 bc := Blockchain{tip, db}29}30type BlockchainIterator struct {31}32func (i *BlockchainIterator) Next() *Block {33 err := i.db.View(func(tx *bolt.Tx) error {34 b := tx.Bucket([]byte(blocksBucket))35 encodedBlock := b.Get(i.currentHash)36 block = DeserializeBlock(encodedBlock)37 })38 Handle(err)39}40func NewBlockchain() *Blockchain {41 db, err := bolt.Open("blockchain.db", 0600, nil)42 Handle(err)43 err = db.Update(func(tx *bolt.Tx) error {44 b := tx.Bucket([]byte(blocksBucket))45 tip = b.Get([]byte("1"))46 })

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serializeHeader

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1func (db *DB) SerializeHeader() ([]byte, error) {2 serializedHeader, err := db.serializeHeader()3 if err != nil {4 }5}6func (db *DB) DeserializeHeader(serializedHeader []byte) error {7 err := db.deserializeHeader(serializedHeader)8 if err != nil {9 }10}11func (db *DB) SerializeNode(node *node) ([]byte, error) {12 serializedNode, err := db.serializeNode(node)13 if err != nil {14 }15}16func (db *DB) DeserializeNode(serializedNode []byte) (*node, error) {17 deserializedNode, err := db.deserializeNode(serializedNode)18 if err != nil {19 }20}21func (db *DB) SerializeLeaf(leaf *leaf) ([]byte, error) {22 serializedLeaf, err := db.serializeLeaf(leaf)23 if err != nil {24 }25}

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serializeHeader

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1func main() {2 db := db.NewDB()3 db.SerializeHeader()4}5import (6type DB struct {7}8func NewDB() *DB {9 return &DB{10 }11}12func (db *DB) SerializeHeader() {13 header, _ := json.Marshal(db)14 fmt.Println(string(header))15}16{"Name":"MyDB"}

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