Esempio n. 1
0
func (e *Encoder) EncodeObject(db uint32, key []byte, expireat uint64, obj interface{}) error {
	o, ok := obj.(objectEncoder)
	if !ok {
		return errors.New("unsupported object type")
	}
	if e.db == -1 || uint32(e.db) != db {
		e.db = int64(db)
		if err := e.enc.EncodeDatabase(int(db)); err != nil {
			return errors.Trace(err)
		}
	}
	if expireat != 0 {
		if err := e.enc.EncodeExpiry(expireat); err != nil {
			return errors.Trace(err)
		}
	}
	if err := o.encodeType(e.enc); err != nil {
		return err
	}
	if err := e.enc.EncodeString(key); err != nil {
		return errors.Trace(err)
	}
	if err := o.encodeValue(e.enc); err != nil {
		return err
	}
	return nil
}
Esempio n. 2
0
func (d *decoder) decodeRequest() (Resp, error) {
	t, err := d.decodeType()
	if err != nil {
		return nil, err
	}
	switch t {
	default:
		if !isLetter(byte(t)) {
			return nil, errors.Trace(ErrBadRespType)
		}
		// may be it's telnet text format
		d.r.UnreadByte()

		t, err := d.decodeText()
		if err != nil {
			return nil, err
		}

		items := strings.Fields(t)
		resp := &Array{}
		for _, item := range items {
			resp.AppendBulkBytes([]byte(item))
		}
		return resp, nil

	case TypeString, TypeError, TypeInt, TypeBulkBytes:
		return nil, errors.Trace(ErrBadRespType)
	case TypePing:
		return NewPing(), nil
	case TypeArray:
		resp := &Array{}
		resp.Value, err = d.decodeArray()
		return resp, err
	}
}
Esempio n. 3
0
func (e *encoder) encodeResp(r Resp) error {
	switch x := r.(type) {
	default:
		return errors.Trace(ErrBadRespType)
	case *String:
		if err := e.encodeType(TypeString); err != nil {
			return err
		}
		return e.encodeText(x.Value)
	case *Error:
		if err := e.encodeType(TypeError); err != nil {
			return err
		}
		return e.encodeText(x.Value)
	case *Int:
		if err := e.encodeType(TypeInt); err != nil {
			return err
		}
		return e.encodeInt(x.Value)
	case *BulkBytes:
		if err := e.encodeType(TypeBulkBytes); err != nil {
			return err
		}
		return e.encodeBulkBytes(x.Value)
	case *Array:
		if err := e.encodeType(TypeArray); err != nil {
			return err
		}
		return e.encodeArray(x.Value)
	case Ping:
		return errors.Trace(e.w.WriteByte('\n'))
	}
}
Esempio n. 4
0
func (e *encoder) encodeText(s string) error {
	if _, err := e.w.WriteString(s); err != nil {
		return errors.Trace(err)
	}
	if _, err := e.w.WriteString("\r\n"); err != nil {
		return errors.Trace(err)
	}
	return nil
}
Esempio n. 5
0
func (d *decoder) decodeText() (string, error) {
	b, err := d.r.ReadBytes('\n')
	if err != nil {
		return "", errors.Trace(err)
	}
	if n := len(b) - 2; n < 0 || b[n] != '\r' {
		return "", errors.Trace(ErrBadRespEnd)
	} else {
		return string(b[:n]), nil
	}
}
Esempio n. 6
0
func (o Set) encodeValue(enc *rdb.Encoder) error {
	if err := enc.EncodeLength(uint32(len(o))); err != nil {
		return errors.Trace(err)
	}
	for _, e := range o {
		if err := enc.EncodeString(e); err != nil {
			return errors.Trace(err)
		}
	}
	return nil
}
Esempio n. 7
0
func (e *encoder) encodeBulkBytes(b []byte) error {
	if b == nil {
		return e.encodeInt(-1)
	} else {
		if err := e.encodeInt(int64(len(b))); err != nil {
			return err
		}
		if _, err := e.w.Write(b); err != nil {
			return errors.Trace(err)
		}
		if _, err := e.w.WriteString("\r\n"); err != nil {
			return errors.Trace(err)
		}
		return nil
	}
}
Esempio n. 8
0
func DecodeDump(p []byte) (interface{}, error) {
	d := &decoder{}
	if err := rdb.DecodeDump(p, 0, nil, 0, d); err != nil {
		return nil, errors.Trace(err)
	}
	return d.obj, d.err
}
Esempio n. 9
0
func (d *decoder) decodeResp() (Resp, error) {
	t, err := d.decodeType()
	if err != nil {
		return nil, err
	}
	switch t {
	default:
		return nil, errors.Trace(ErrBadRespType)
	case TypeString:
		resp := &String{}
		resp.Value, err = d.decodeText()
		return resp, err
	case TypeError:
		resp := &Error{}
		resp.Value, err = d.decodeText()
		return resp, err
	case TypeInt:
		resp := &Int{}
		resp.Value, err = d.decodeInt()
		return resp, err
	case TypeBulkBytes:
		resp := &BulkBytes{}
		resp.Value, err = d.decodeBulkBytes()
		return resp, err
	case TypeArray:
		resp := &Array{}
		resp.Value, err = d.decodeArray()
		return resp, err
	case TypePing:
		return NewPing(), nil
	}
}
Esempio n. 10
0
func (d *decoder) decodeType() (RespType, error) {
	if b, err := d.r.ReadByte(); err != nil {
		return 0, errors.Trace(err)
	} else {
		return RespType(b), nil
	}
}
Esempio n. 11
0
func OpenFile(fileName string, exclusive bool) (*os.File, error) {
	flag := os.O_CREATE | os.O_RDWR | os.O_TRUNC
	if exclusive {
		flag |= os.O_EXCL
	}
	f, err := os.OpenFile(fileName, flag, 0600)
	return f, errors.Trace(err)
}
Esempio n. 12
0
func Parse(s string) (int64, error) {
	if !BytesizeRegexp.MatchString(s) {
		return 0, errors.Trace(ErrBadBytesize)
	}

	subs := BytesizeRegexp.FindStringSubmatch(s)
	if len(subs) != 3 {
		return 0, errors.Trace(ErrBadBytesize)
	}

	size := int64(0)
	switch strings.ToUpper(string(subs[2])) {
	case "B", "":
		size = 1
	case "KB", "K":
		size = KB
	case "MB", "M":
		size = MB
	case "GB", "G":
		size = GB
	case "TB", "T":
		size = TB
	case "PB", "P":
		size = PB
	default:
		return 0, errors.Trace(ErrBadBytesizeUnit)
	}

	text := subs[1]
	if digitsRegexp.MatchString(text) {
		n, err := strconv.ParseInt(text, 10, 64)
		if err != nil {
			return 0, errors.Trace(ErrBadBytesize)
		}
		size *= n
	} else {
		n, err := strconv.ParseFloat(text, 64)
		if err != nil {
			return 0, errors.Trace(ErrBadBytesize)
		}
		size = int64(float64(size) * n)
	}
	return size, nil
}
Esempio n. 13
0
func (w *simpleWriter) Write(b []byte) (int, error) {
	if w.err != nil {
		return 0, w.err
	}
	n, err := w.w.Write(b)
	if err != nil {
		w.err = errors.Trace(err)
	}
	return n, w.err
}
Esempio n. 14
0
func (d *decoder) decodeBulkBytes() ([]byte, error) {
	n, err := d.decodeInt()
	if err != nil {
		return nil, err
	}
	if n < -1 {
		return nil, errors.Trace(ErrBadRespBytesLen)
	} else if n == -1 {
		return nil, nil
	}
	b := make([]byte, n+2)
	if _, err := ioutils.ReadFull(d.r, b); err != nil {
		return nil, errors.Trace(err)
	}
	if b[n] != '\r' || b[n+1] != '\n' {
		return nil, errors.Trace(ErrBadRespEnd)
	}
	return b[:n], nil
}
Esempio n. 15
0
func (r *simpleReader) Read(b []byte) (int, error) {
	if r.err != nil {
		return 0, r.err
	}
	n, err := r.r.Read(b)
	if err != nil {
		r.err = errors.Trace(err)
	}
	return n, r.err
}
Esempio n. 16
0
func (d *decoder) decodeInt() (int64, error) {
	b, err := d.decodeText()
	if err != nil {
		return 0, err
	}
	if n, err := strconv.ParseInt(string(b), 10, 64); err != nil {
		return 0, errors.Trace(err)
	} else {
		return n, nil
	}
}
Esempio n. 17
0
func (p *pipe) WClose(err error) error {
	if err == nil {
		err = errors.Trace(io.EOF)
	}
	p.mu.Lock()
	defer p.mu.Unlock()
	if p.werr == nil {
		p.werr = err
	}
	p.rwait.Signal()
	p.wwait.Signal()
	return p.store.wclose()
}
Esempio n. 18
0
func (l *Loader) Header() error {
	header := make([]byte, 9)
	if err := l.readFull(header); err != nil {
		return err
	}
	if !bytes.Equal(header[:5], []byte("REDIS")) {
		return errors.New("verify magic string, invalid file format")
	}
	if version, err := strconv.ParseInt(string(header[5:]), 10, 64); err != nil {
		return errors.Trace(err)
	} else if version <= 0 || version > Version {
		return errors.Errorf("verify version, invalid RDB version number %d", version)
	}
	return nil
}
Esempio n. 19
0
func EncodeDump(obj interface{}) ([]byte, error) {
	o, ok := obj.(objectEncoder)
	if !ok {
		return nil, errors.New("unsupported object type")
	}
	var b bytes.Buffer
	enc := rdb.NewEncoder(&b)
	if err := o.encodeType(enc); err != nil {
		return nil, err
	}
	if err := o.encodeValue(enc); err != nil {
		return nil, err
	}
	if err := enc.EncodeDumpFooter(); err != nil {
		return nil, errors.Trace(err)
	}
	return b.Bytes(), nil
}
Esempio n. 20
0
func (d *decoder) decodeArray() ([]Resp, error) {
	n, err := d.decodeInt()
	if err != nil {
		return nil, err
	}
	if n < -1 {
		return nil, errors.Trace(ErrBadRespArrayLen)
	} else if n == -1 {
		return nil, nil
	}
	a := make([]Resp, n)
	for i := 0; i < len(a); i++ {
		if a[i], err = d.decodeResp(); err != nil {
			return nil, err
		}
	}
	return a, nil
}
Esempio n. 21
0
func (r *rdbReader) readFloat() (float64, error) {
	u, err := r.readUint8()
	if err != nil {
		return 0, err
	}
	switch u {
	case 253:
		return math.NaN(), nil
	case 254:
		return math.Inf(0), nil
	case 255:
		return math.Inf(-1), nil
	default:
		if b, err := r.readBytes(int(u)); err != nil {
			return 0, err
		} else {
			v, err := strconv.ParseFloat(string(b), 64)
			return v, errors.Trace(err)
		}
	}
}
Esempio n. 22
0
func (p *pipe) Read(b []byte) (int, error) {
	p.rl.Lock()
	defer p.rl.Unlock()

	p.mu.Lock()
	defer p.mu.Unlock()

	for {
		if p.rerr != nil {
			return 0, errors.Trace(io.ErrClosedPipe)
		}
		n, err := p.store.read(b)
		if err != nil || n != 0 {
			p.wwait.Signal()
			return n, err
		}
		if p.werr != nil || len(b) == 0 {
			return 0, p.werr
		}
		p.rwait.Wait()
	}
}
Esempio n. 23
0
func (o String) encodeValue(enc *rdb.Encoder) error {
	if err := enc.EncodeString([]byte(o)); err != nil {
		return errors.Trace(err)
	}
	return nil
}
Esempio n. 24
0
func (o Set) encodeType(enc *rdb.Encoder) error {
	t := rdb.ValueType(rdbTypeSet)
	return errors.Trace(enc.EncodeType(t))
}
Esempio n. 25
0
func OpenTempFile(dir, prefix string) (*os.File, error) {
	f, err := ioutil.TempFile(dir, prefix)
	return f, errors.Trace(err)
}
Esempio n. 26
0
func (e *encoder) encodeType(t RespType) error {
	return errors.Trace(e.w.WriteByte(byte(t)))
}
Esempio n. 27
0
func (r *rdbReader) Read(p []byte) (int, error) {
	n, err := r.raw.Read(p)
	r.nread += int64(n)
	return n, errors.Trace(err)
}
Esempio n. 28
0
func (e *Encoder) EncodeFooter() error {
	return errors.Trace(e.enc.EncodeFooter())
}
Esempio n. 29
0
File: log.go Progetto: vebin/reborn
func OpenFile(path string) (*os.File, error) {
	f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0666)
	return f, errors.Trace(err)
}