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How to use Len method of proto Package

Best Rod code snippet using proto.Len

protocol.go

Source:protocol.go

...28	_seqOffset    = _opOffset + _opSize29	_heartOffset  = _seqOffset + _seqSize30)31var (32	// ErrProtoPackLen proto packet len error33	ErrProtoPackLen = errors.New("default server codec pack length error")34	// ErrProtoHeaderLen proto header len error35	ErrProtoHeaderLen = errors.New("default server codec header length error")36)37var (38	// ProtoReady proto ready39	ProtoReady = &Proto{Op: OpProtoReady}40	// ProtoFinish proto finish41	ProtoFinish = &Proto{Op: OpProtoFinish}42)43// WriteTo write a proto to bytes writer.44func (p *Proto) WriteTo(b *bytes.Writer) {45	var (46		packLen = _rawHeaderSize + int32(len(p.Body))47		buf     = b.Peek(_rawHeaderSize)48	)49	binary.BigEndian.PutInt32(buf[_packOffset:], packLen)50	binary.BigEndian.PutInt16(buf[_headerOffset:], int16(_rawHeaderSize))51	binary.BigEndian.PutInt16(buf[_verOffset:], int16(p.Ver))52	binary.BigEndian.PutInt32(buf[_opOffset:], p.Op)53	binary.BigEndian.PutInt32(buf[_seqOffset:], p.Seq)54	if p.Body != nil {55		b.Write(p.Body)56	}57}58// ReadTCP read a proto from TCP reader.59func (p *Proto) ReadTCP(rr *bufio.Reader) (err error) {60	var (61		bodyLen   int62		headerLen int1663		packLen   int3264		buf       []byte65	)66	if buf, err = rr.Pop(_rawHeaderSize); err != nil {67		return68	}69	packLen = binary.BigEndian.Int32(buf[_packOffset:_headerOffset])70	headerLen = binary.BigEndian.Int16(buf[_headerOffset:_verOffset])71	p.Ver = int32(binary.BigEndian.Int16(buf[_verOffset:_opOffset]))72	p.Op = binary.BigEndian.Int32(buf[_opOffset:_seqOffset])73	p.Seq = binary.BigEndian.Int32(buf[_seqOffset:])74	if packLen > _maxPackSize {75		return ErrProtoPackLen76	}77	if headerLen != _rawHeaderSize {78		return ErrProtoHeaderLen79	}80	if bodyLen = int(packLen - int32(headerLen)); bodyLen > 0 {81		p.Body, err = rr.Pop(bodyLen)82	} else {83		p.Body = nil84	}85	return86}87// WriteTCP write a proto to TCP writer.88func (p *Proto) WriteTCP(wr *bufio.Writer) (err error) {89	var (90		buf     []byte91		packLen int3292	)93	if p.Op == OpRaw {94		// write without buffer, job concact proto into raw buffer95		_, err = wr.WriteRaw(p.Body)96		return97	}98	packLen = _rawHeaderSize + int32(len(p.Body))99	if buf, err = wr.Peek(_rawHeaderSize); err != nil {100		return101	}102	binary.BigEndian.PutInt32(buf[_packOffset:], packLen)103	binary.BigEndian.PutInt16(buf[_headerOffset:], int16(_rawHeaderSize))104	binary.BigEndian.PutInt16(buf[_verOffset:], int16(p.Ver))105	binary.BigEndian.PutInt32(buf[_opOffset:], p.Op)106	binary.BigEndian.PutInt32(buf[_seqOffset:], p.Seq)107	if p.Body != nil {108		_, err = wr.Write(p.Body)109	}110	return111}112// WriteTCPHeart write TCP heartbeat with room online.113func (p *Proto) WriteTCPHeart(wr *bufio.Writer, online int32) (err error) {114	var (115		buf     []byte116		packLen int117	)118	packLen = _rawHeaderSize + _heartSize119	if buf, err = wr.Peek(packLen); err != nil {120		return121	}122	// header123	binary.BigEndian.PutInt32(buf[_packOffset:], int32(packLen))124	binary.BigEndian.PutInt16(buf[_headerOffset:], int16(_rawHeaderSize))125	binary.BigEndian.PutInt16(buf[_verOffset:], int16(p.Ver))126	binary.BigEndian.PutInt32(buf[_opOffset:], p.Op)127	binary.BigEndian.PutInt32(buf[_seqOffset:], p.Seq)128	// body129	binary.BigEndian.PutInt32(buf[_heartOffset:], online)130	return131}132// ReadWebsocket read a proto from websocket connection.133func (p *Proto) ReadWebsocket(ws *websocket.Conn) (err error) {134	var (135		bodyLen   int136		headerLen int16137		packLen   int32138		buf       []byte139	)140	if _, buf, err = ws.ReadMessage(); err != nil {141		return142	}143	if len(buf) < _rawHeaderSize {144		return ErrProtoPackLen145	}146	packLen = binary.BigEndian.Int32(buf[_packOffset:_headerOffset])147	headerLen = binary.BigEndian.Int16(buf[_headerOffset:_verOffset])148	p.Ver = int32(binary.BigEndian.Int16(buf[_verOffset:_opOffset]))149	p.Op = binary.BigEndian.Int32(buf[_opOffset:_seqOffset])150	p.Seq = binary.BigEndian.Int32(buf[_seqOffset:])151	if packLen < 0 || packLen > _maxPackSize {152		return ErrProtoPackLen153	}154	if headerLen != _rawHeaderSize {155		return ErrProtoHeaderLen156	}157	if bodyLen = int(packLen - int32(headerLen)); bodyLen > 0 {158		p.Body = buf[headerLen:packLen]159	} else {160		p.Body = nil161	}162	return163}164// WriteWebsocket write a proto to websocket connection.165func (p *Proto) WriteWebsocket(ws *websocket.Conn) (err error) {166	var (167		buf     []byte168		packLen int169	)170	packLen = _rawHeaderSize + len(p.Body)171	if err = ws.WriteHeader(websocket.BinaryMessage, packLen); err != nil {172		return173	}174	if buf, err = ws.Peek(_rawHeaderSize); err != nil {175		return176	}177	binary.BigEndian.PutInt32(buf[_packOffset:], int32(packLen))178	binary.BigEndian.PutInt16(buf[_headerOffset:], int16(_rawHeaderSize))179	binary.BigEndian.PutInt16(buf[_verOffset:], int16(p.Ver))180	binary.BigEndian.PutInt32(buf[_opOffset:], p.Op)181	binary.BigEndian.PutInt32(buf[_seqOffset:], p.Seq)182	if p.Body != nil {183		err = ws.WriteBody(p.Body)184	}185	return186}187// WriteWebsocketHeart write websocket heartbeat with room online.188func (p *Proto) WriteWebsocketHeart(wr *websocket.Conn, online int32) (err error) {189	var (190		buf     []byte191		packLen int192	)193	packLen = _rawHeaderSize + _heartSize194	// websocket header195	if err = wr.WriteHeader(websocket.BinaryMessage, packLen); err != nil {196		return197	}198	if buf, err = wr.Peek(packLen); err != nil {199		return200	}201	// proto header202	binary.BigEndian.PutInt32(buf[_packOffset:], int32(packLen))203	binary.BigEndian.PutInt16(buf[_headerOffset:], int16(_rawHeaderSize))204	binary.BigEndian.PutInt16(buf[_verOffset:], int16(p.Ver))205	binary.BigEndian.PutInt32(buf[_opOffset:], p.Op)206	binary.BigEndian.PutInt32(buf[_seqOffset:], p.Seq)207	// proto body208	binary.BigEndian.PutInt32(buf[_heartOffset:], online)209	return210}...

local.go

Source:local.go

...16)17const (18	// Name is the name of the driver19	Name = "local"20	encodeBinaryLen = 421	initialBufSize  = 204822	maxDecodeRetry  = 2000023	defaultMaxFileSize  int64 = 20 * 1024 * 102424	defaultMaxFileCount       = 525	defaultCompressLogs       = true26)27// LogOptKeys are the keys names used for log opts passed in to initialize the driver.28var LogOptKeys = map[string]bool{29	"max-file": true,30	"max-size": true,31	"compress": true,32}33// ValidateLogOpt looks for log driver specific options.34func ValidateLogOpt(cfg map[string]string) error {35	for key := range cfg {36		if !LogOptKeys[key] {37			return errors.Errorf("unknown log opt '%s' for log driver %s", key, Name)38		}39	}40	return nil41}42func init() {43	if err := logger.RegisterLogDriver(Name, New); err != nil {44		logrus.Fatal(err)45	}46	if err := logger.RegisterLogOptValidator(Name, ValidateLogOpt); err != nil {47		logrus.Fatal(err)48	}49}50type driver struct {51	mu      sync.Mutex52	closed  bool53	logfile *loggerutils.LogFile54	readers map[*logger.LogWatcher]struct{} // stores the active log followers55}56// New creates a new local logger57// You must provide the `LogPath` in the passed in info argument, this is the file path that logs are written to.58func New(info logger.Info) (logger.Logger, error) {59	if info.LogPath == "" {60		return nil, errdefs.System(errors.New("log path is missing -- this is a bug and should not happen"))61	}62	cfg := newDefaultConfig()63	if capacity, ok := info.Config["max-size"]; ok {64		var err error65		cfg.MaxFileSize, err = units.FromHumanSize(capacity)66		if err != nil {67			return nil, errdefs.InvalidParameter(errors.Wrapf(err, "invalid value for max-size: %s", capacity))68		}69	}70	if userMaxFileCount, ok := info.Config["max-file"]; ok {71		var err error72		cfg.MaxFileCount, err = strconv.Atoi(userMaxFileCount)73		if err != nil {74			return nil, errdefs.InvalidParameter(errors.Wrapf(err, "invalid value for max-file: %s", userMaxFileCount))75		}76	}77	if userCompress, ok := info.Config["compress"]; ok {78		compressLogs, err := strconv.ParseBool(userCompress)79		if err != nil {80			return nil, errdefs.InvalidParameter(errors.Wrap(err, "error reading compress log option"))81		}82		cfg.DisableCompression = !compressLogs83	}84	return newDriver(info.LogPath, cfg)85}86func makeMarshaller() func(m *logger.Message) ([]byte, error) {87	buf := make([]byte, initialBufSize)88	// allocate the partial log entry separately, which allows for easier re-use89	proto := &logdriver.LogEntry{}90	md := &logdriver.PartialLogEntryMetadata{}91	return func(m *logger.Message) ([]byte, error) {92		resetProto(proto)93		messageToProto(m, proto, md)94		protoSize := proto.Size()95		writeLen := protoSize + (2 * encodeBinaryLen) //+ len(messageDelimiter)96		if writeLen > len(buf) {97			buf = make([]byte, writeLen)98		} else {99			// shrink the buffer back down100			if writeLen <= initialBufSize {101				buf = buf[:initialBufSize]102			} else {103				buf = buf[:writeLen]104			}105		}106		binary.BigEndian.PutUint32(buf[:encodeBinaryLen], uint32(protoSize))107		n, err := proto.MarshalTo(buf[encodeBinaryLen:writeLen])108		if err != nil {109			return nil, errors.Wrap(err, "error marshaling log entry")110		}111		if n+(encodeBinaryLen*2) != writeLen {112			return nil, io.ErrShortWrite113		}114		binary.BigEndian.PutUint32(buf[writeLen-encodeBinaryLen:writeLen], uint32(protoSize))115		return buf[:writeLen], nil116	}117}118func newDriver(logPath string, cfg *CreateConfig) (logger.Logger, error) {119	if err := validateConfig(cfg); err != nil {120		return nil, errdefs.InvalidParameter(err)121	}122	lf, err := loggerutils.NewLogFile(logPath, cfg.MaxFileSize, cfg.MaxFileCount, !cfg.DisableCompression, makeMarshaller(), decodeFunc, 0640, getTailReader)123	if err != nil {124		return nil, err125	}126	return &driver{127		logfile: lf,128		readers: make(map[*logger.LogWatcher]struct{}),129	}, nil...

multipart.go

Source:multipart.go

2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4package icmp5import "golang.org/x/net/internal/iana"6// multipartMessageBodyDataLen takes b as an original datagram and7// exts as extensions, and returns a required length for message body8// and a required length for a padded original datagram in wire9// format.10func multipartMessageBodyDataLen(proto int, withOrigDgram bool, b []byte, exts []Extension) (bodyLen, dataLen int) {11	bodyLen = 4 // length of leading octets12	var extLen int13	var rawExt bool // raw extension may contain an empty object14	for _, ext := range exts {15		extLen += ext.Len(proto)16		if _, ok := ext.(*RawExtension); ok {17			rawExt = true18		}19	}20	if extLen > 0 && withOrigDgram {21		dataLen = multipartMessageOrigDatagramLen(proto, b)22	} else {23		dataLen = len(b)24	}25	if extLen > 0 || rawExt {26		bodyLen += 4 // length of extension header27	}28	bodyLen += dataLen + extLen29	return bodyLen, dataLen30}31// multipartMessageOrigDatagramLen takes b as an original datagram,32// and returns a required length for a padded orignal datagram in wire33// format.34func multipartMessageOrigDatagramLen(proto int, b []byte) int {35	roundup := func(b []byte, align int) int {36		// According to RFC 4884, the padded original datagram37		// field must contain at least 128 octets.38		if len(b) < 128 {39			return 12840		}41		r := len(b)42		return (r + align - 1) &^ (align - 1)43	}44	switch proto {45	case iana.ProtocolICMP:46		return roundup(b, 4)47	case iana.ProtocolIPv6ICMP:48		return roundup(b, 8)49	default:50		return len(b)51	}52}53// marshalMultipartMessageBody takes data as an original datagram and54// exts as extesnsions, and returns a binary encoding of message body.55// It can be used for non-multipart message bodies when exts is nil.56func marshalMultipartMessageBody(proto int, withOrigDgram bool, data []byte, exts []Extension) ([]byte, error) {57	bodyLen, dataLen := multipartMessageBodyDataLen(proto, withOrigDgram, data, exts)58	b := make([]byte, bodyLen)59	copy(b[4:], data)60	if len(exts) > 0 {61		b[4+dataLen] = byte(extensionVersion << 4)62		off := 4 + dataLen + 4 // leading octets, data, extension header63		for _, ext := range exts {64			switch ext := ext.(type) {65			case *MPLSLabelStack:66				if err := ext.marshal(proto, b[off:]); err != nil {67					return nil, err68				}69				off += ext.Len(proto)70			case *InterfaceInfo:71				attrs, l := ext.attrsAndLen(proto)72				if err := ext.marshal(proto, b[off:], attrs, l); err != nil {73					return nil, err74				}75				off += ext.Len(proto)76			case *InterfaceIdent:77				if err := ext.marshal(proto, b[off:]); err != nil {78					return nil, err79				}80				off += ext.Len(proto)81			case *RawExtension:82				copy(b[off:], ext.Data)83				off += ext.Len(proto)84			}85		}86		s := checksum(b[4+dataLen:])87		b[4+dataLen+2] ^= byte(s)88		b[4+dataLen+3] ^= byte(s >> 8)89		if withOrigDgram {90			switch proto {91			case iana.ProtocolICMP:92				b[1] = byte(dataLen / 4)93			case iana.ProtocolIPv6ICMP:94				b[0] = byte(dataLen / 8)95			}96		}97	}98	return b, nil99}100// parseMultipartMessageBody parses b as either a non-multipart101// message body or a multipart message body.102func parseMultipartMessageBody(proto int, typ Type, b []byte) ([]byte, []Extension, error) {103	var l int104	switch proto {105	case iana.ProtocolICMP:106		l = 4 * int(b[1])107	case iana.ProtocolIPv6ICMP:108		l = 8 * int(b[0])...

Len

Using AI Code Generation

1import (2func main() {3 t := timestamp.Timestamp{4 }5 fmt.Println(t.Len())6}

Len

Using AI Code Generation

1import (2func main() {3 p := &Person{4 }5 fmt.Println(proto.Size(p))6}

Len

Using AI Code Generation

1import (2func main() {3	p := &Person{4	}5	out, err := proto.Marshal(p)6	if err != nil {7		fmt.Println(err)8	}9	newP := &Person{}10	err = proto.Unmarshal(out, newP)11	if err != nil {12		fmt.Println(err)13	}14	fmt.Println(newP)15	fmt.Println("Length of the data in bytes is:", proto.Size(p))16}

Len

Using AI Code Generation

1func (m *Message) Len() int {2	return len(m.Body)3}4func (m *Message) Get(index int) int {5	return int(m.Body[index])6}7func (m *Message) Set(index, value int) {8	m.Body[index] = byte(value)9}10func (m *Message) Append(value int) {11	m.Body = append(m.Body, byte(value))12}13func (m *Message) Insert(index, value int) {14	m.Body = append(m.Body, 0)15	copy(m.Body[index+1:], m.Body[index:])16	m.Body[index] = byte(value)17}18func (m *Message) Delete(index int) {19	copy(m.Body[index:], m.Body[index+1:])20	m.Body = m.Body[:len(m.Body)-1]21}22func (m *Message) Clear() {23}24func (m *Message) Trim() {25	m.Body = m.Body[:cap(m.Body)]26}27func (m *Message) Reverse() {28	for i, j := 0, len(m.Body)-1; i < j; i, j = i+1, j-1 {29	}30}31func (m *Message) Pop() int {32	n := len(m.Body)33	return int(x)34}35func (m *Message) Push(x int) {36	m.Body = append(m.Body, byte(x))37}

Len

Using AI Code Generation

1import (2func main() {3 p := proto3.Person{4 }5 fmt.Println("Length of the message:", proto.Size(&p))6}

Len

Using AI Code Generation

1import (2func main() {3 p := &Person{4 }5 fmt.Println(proto.Size(p))6}

Len

Using AI Code Generation

1import (2func main() {3 message := &Message{}4 fmt.Println(message)5 fmt.Println(proto.Size(message))6}

Len

Using AI Code Generation

1import (2func main() {3	person := &proto3.Person{4	}5	data, err := proto.Marshal(person)6	if err != nil {7		fmt.Println("Marshaling error: ", err)8	}9	fmt.Println("Length of the serialized message: ", len(data))10}

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