Exemple #1
0
func (cmd *cmdDump) Main() {
	from, output := args.from, args.output
	if len(from) == 0 {
		log.Panic("invalid argument: from")
	}
	if len(output) == 0 {
		output = "/dev/stdout"
	}

	log.Infof("dump from '%s' to '%s'\n", from, output)

	var dumpto io.WriteCloser
	if output != "/dev/stdout" {
		dumpto = openWriteFile(output)
		defer dumpto.Close()
	} else {
		dumpto = os.Stdout
	}

	master, nsize := cmd.SendCmd(from, args.passwd)
	defer master.Close()

	log.Infof("rdb file = %d\n", nsize)

	reader := bufio.NewReaderSize(master, ReaderBufferSize)
	writer := bufio.NewWriterSize(dumpto, WriterBufferSize)

	cmd.DumpRDBFile(reader, writer, nsize)

	if !args.extra {
		return
	}

	cmd.DumpCommand(reader, writer, nsize)
}
Exemple #2
0
func (cmd *cmdSync) SendPSyncCmd(master, passwd string) (pipe.Reader, int64) {
	c := openNetConn(master, passwd)
	br := bufio.NewReaderSize(c, ReaderBufferSize)
	bw := bufio.NewWriterSize(c, WriterBufferSize)

	runid, offset, wait := sendPSyncFullsync(br, bw)
	log.Infof("psync runid = %s offset = %d, fullsync", runid, offset)

	var nsize int64
	for nsize == 0 {
		select {
		case nsize = <-wait:
			if nsize == 0 {
				log.Info("+")
			}
		case <-time.After(time.Second):
			log.Info("-")
		}
	}

	piper, pipew := pipe.NewSize(ReaderBufferSize)

	go func() {
		defer pipew.Close()
		p := make([]byte, 8192)
		for rdbsize := int(nsize); rdbsize != 0; {
			rdbsize -= iocopy(br, pipew, p, rdbsize)
		}
		for {
			n, err := cmd.PSyncPipeCopy(c, br, bw, offset, pipew)
			if err != nil {
				log.PanicErrorf(err, "psync runid = %s, offset = %d, pipe is broken", runid, offset)
			}
			offset += n
			for {
				time.Sleep(time.Second)
				c = openNetConnSoft(master, passwd)
				if c != nil {
					log.Infof("psync reopen connection, offset = %d", offset)
					break
				} else {
					log.Infof("psync reopen connection, failed")
				}
			}
			authPassword(c, passwd)
			br = bufio.NewReaderSize(c, ReaderBufferSize)
			bw = bufio.NewWriterSize(c, WriterBufferSize)
			sendPSyncContinue(br, bw, runid, offset)
		}
	}()
	return piper, nsize
}
Exemple #3
0
func (cmd *cmdDump) DumpRDBFile(reader *bufio.Reader, writer *bufio.Writer, nsize int64) {
	var nread atomic2.Int64
	wait := make(chan struct{})
	go func() {
		defer close(wait)
		p := make([]byte, WriterBufferSize)
		for nsize != nread.Get() {
			nstep := int(nsize - nread.Get())
			ncopy := int64(iocopy(reader, writer, p, nstep))
			nread.Add(ncopy)
			flushWriter(writer)
		}
	}()

	for done := false; !done; {
		select {
		case <-wait:
			done = true
		case <-time.After(time.Second):
		}
		n := nread.Get()
		p := 100 * n / nsize
		log.Infof("total = %d - %12d [%3d%%]\n", nsize, n, p)
	}
	log.Info("dump: rdb done")
}
Exemple #4
0
func (cmd *cmdRestore) Main() {
	input, target := args.input, args.target
	if len(target) == 0 {
		log.Panic("invalid argument: target")
	}
	if len(input) == 0 {
		input = "/dev/stdin"
	}

	log.Infof("restore from '%s' to '%s'\n", input, target)

	var readin io.ReadCloser
	var nsize int64
	if input != "/dev/stdin" {
		readin, nsize = openReadFile(input)
		defer readin.Close()
	} else {
		readin, nsize = os.Stdin, 0
	}

	reader := bufio.NewReaderSize(readin, ReaderBufferSize)

	cmd.RestoreRDBFile(reader, target, args.auth, nsize)

	if !args.extra {
		return
	}

	if nsize != 0 && nsize == cmd.rbytes.Get() {
		return
	}

	cmd.RestoreCommand(reader, target, args.auth)
}
Exemple #5
0
func (cmd *cmdSync) Main() {
	from, target := args.from, args.target
	if len(from) == 0 {
		log.Panic("invalid argument: from")
	}
	if len(target) == 0 {
		log.Panic("invalid argument: target")
	}

	log.Infof("sync from '%s' to '%s'\n", from, target)

	var sockfile *os.File
	if len(args.sockfile) != 0 {
		sockfile = openReadWriteFile(args.sockfile)
		defer sockfile.Close()
	}

	var input io.ReadCloser
	var nsize int64
	if args.psync {
		input, nsize = cmd.SendPSyncCmd(from, args.passwd)
	} else {
		input, nsize = cmd.SendSyncCmd(from, args.passwd)
	}
	defer input.Close()

	log.Infof("rdb file = %d\n", nsize)

	if sockfile != nil {
		r, w := pipe.NewFilePipe(int(args.filesize), sockfile)
		defer r.Close()
		go func(r io.Reader) {
			defer w.Close()
			p := make([]byte, ReaderBufferSize)
			for {
				iocopy(r, w, p, len(p))
			}
		}(input)
		input = r
	}

	reader := bufio.NewReaderSize(input, ReaderBufferSize)

	cmd.SyncRDBFile(reader, target, args.auth, nsize)
	cmd.SyncCommand(reader, target, args.auth)
}
Exemple #6
0
func (cmd *cmdDump) DumpCommand(reader *bufio.Reader, writer *bufio.Writer, nsize int64) {
	var nread atomic2.Int64
	go func() {
		p := make([]byte, ReaderBufferSize)
		for {
			ncopy := int64(iocopy(reader, writer, p, len(p)))
			nread.Add(ncopy)
			flushWriter(writer)
		}
	}()

	for {
		time.Sleep(time.Second)
		log.Infof("dump: total = %d\n", nsize+nread.Get())
	}
}
Exemple #7
0
func main() {
	usage := `
Usage:
	redis-port decode   [--ncpu=N]  [--parallel=M]  [--input=INPUT]  [--output=OUTPUT]
	redis-port restore  [--ncpu=N]  [--parallel=M]  [--input=INPUT]   --target=TARGET   [--auth=AUTH]  [--extra] [--faketime=FAKETIME]  [--filterdb=DB]
	redis-port dump     [--ncpu=N]  [--parallel=M]   --from=MASTER   [--password=PASSWORD]  [--output=OUTPUT]  [--extra]
	redis-port sync     [--ncpu=N]  [--parallel=M]   --from=MASTER   [--password=PASSWORD]   --target=TARGET   [--auth=AUTH]  [--sockfile=FILE [--filesize=SIZE]] [--filterdb=DB] [--psync]

Options:
	-n N, --ncpu=N                    Set runtime.GOMAXPROCS to N.
	-p M, --parallel=M                Set the number of parallel routines to M.
	-i INPUT, --input=INPUT           Set input file, default is stdin ('/dev/stdin').
	-o OUTPUT, --output=OUTPUT        Set output file, default is stdout ('/dev/stdout').
	-f MASTER, --from=MASTER          Set host:port of master redis.
	-t TARGET, --target=TARGET        Set host:port of slave redis.
	-P PASSWORD, --password=PASSWORD  Set redis auth password.
	-A AUTH, --auth=AUTH              Set auth password for target.
	--faketime=FAKETIME               Set current system time to adjust key's expire time.
	--sockfile=FILE                   Use FILE to as socket buffer, default is disabled.
	--filesize=SIZE                   Set FILE size, default value is 1gb.
	-e, --extra                       Set ture to send/receive following redis commands, default is false.
	--filterdb=DB                     Filter db = DB, default is *.
	--psync                           Use PSYNC command.
`
	d, err := docopt.Parse(usage, nil, true, "", false)
	if err != nil {
		log.PanicError(err, "parse arguments failed")
	}

	if s, ok := d["--ncpu"].(string); ok && s != "" {
		n, err := parseInt(s, 1, 1024)
		if err != nil {
			log.PanicErrorf(err, "parse --ncpu failed")
		}
		runtime.GOMAXPROCS(n)
	}
	ncpu := runtime.GOMAXPROCS(0)

	if s, ok := d["--parallel"].(string); ok && s != "" {
		n, err := parseInt(s, 1, 1024)
		if err != nil {
			log.PanicErrorf(err, "parse --parallel failed")
		}
		args.parallel = n
	}
	if ncpu > args.parallel {
		args.parallel = ncpu
	}
	if args.parallel == 0 {
		args.parallel = 4
	}

	args.input, _ = d["--input"].(string)
	args.output, _ = d["--output"].(string)

	args.from, _ = d["--from"].(string)
	args.passwd, _ = d["--password"].(string)
	args.auth, _ = d["--auth"].(string)
	args.target, _ = d["--target"].(string)

	args.extra, _ = d["--extra"].(bool)
	args.psync, _ = d["--psync"].(bool)
	args.sockfile, _ = d["--sockfile"].(string)

	if s, ok := d["--faketime"].(string); ok && s != "" {
		switch s[0] {
		case '-', '+':
			d, err := time.ParseDuration(strings.ToLower(s))
			if err != nil {
				log.PanicError(err, "parse --faketime failed")
			}
			args.shift = d
		case '@':
			n, err := strconv.ParseInt(s[1:], 10, 64)
			if err != nil {
				log.PanicError(err, "parse --faketime failed")
			}
			args.shift = time.Duration(n*int64(time.Millisecond) - time.Now().UnixNano())
		default:
			t, err := time.Parse("2006-01-02 15:04:05", s)
			if err != nil {
				log.PanicError(err, "parse --faketime failed")
			}
			args.shift = time.Duration(t.UnixNano() - time.Now().UnixNano())
		}
	}

	if s, ok := d["--filterdb"].(string); ok && s != "" && s != "*" {
		n, err := parseInt(s, MinDB, MaxDB)
		if err != nil {
			log.PanicError(err, "parse --filterdb failed")
		}
		u := uint32(n)
		acceptDB = func(db uint32) bool {
			return db == u
		}
	}

	if s, ok := d["--filesize"].(string); ok && s != "" {
		if len(args.sockfile) == 0 {
			log.Panic("please specify --sockfile first")
		}
		n, err := bytesize.Parse(s)
		if err != nil {
			log.PanicError(err, "parse --filesize failed")
		}
		if n <= 0 {
			log.Panicf("parse --filesize = %d, invalid number", n)
		}
		args.filesize = n
	} else {
		args.filesize = bytesize.GB
	}

	log.Infof("set ncpu = %d, parallel = %d\n", ncpu, args.parallel)

	switch {
	case d["decode"].(bool):
		new(cmdDecode).Main()
	case d["restore"].(bool):
		new(cmdRestore).Main()
	case d["dump"].(bool):
		new(cmdDump).Main()
	case d["sync"].(bool):
		new(cmdSync).Main()
	}
}
Exemple #8
0
func (cmd *cmdDecode) Main() {
	input, output := args.input, args.output
	if len(input) == 0 {
		input = "/dev/stdin"
	}
	if len(output) == 0 {
		output = "/dev/stdout"
	}

	log.Infof("decode from '%s' to '%s'\n", input, output)

	var readin io.ReadCloser
	var nsize int64
	if input != "/dev/stdin" {
		readin, nsize = openReadFile(input)
		defer readin.Close()
	} else {
		readin, nsize = os.Stdin, 0
	}

	var saveto io.WriteCloser
	if output != "/dev/stdout" {
		saveto = openWriteFile(output)
		defer saveto.Close()
	} else {
		saveto = os.Stdout
	}

	reader := bufio.NewReaderSize(readin, ReaderBufferSize)
	writer := bufio.NewWriterSize(saveto, WriterBufferSize)

	ipipe := newRDBLoader(reader, &cmd.rbytes, args.parallel*32)
	opipe := make(chan string, cap(ipipe))

	go func() {
		defer close(opipe)
		group := make(chan int, args.parallel)
		for i := 0; i < cap(group); i++ {
			go func() {
				defer func() {
					group <- 0
				}()
				cmd.decoderMain(ipipe, opipe)
			}()
		}
		for i := 0; i < cap(group); i++ {
			<-group
		}
	}()

	wait := make(chan struct{})
	go func() {
		defer close(wait)
		for s := range opipe {
			cmd.wbytes.Add(int64(len(s)))
			if _, err := writer.WriteString(s); err != nil {
				log.PanicError(err, "write string failed")
			}
			flushWriter(writer)
		}
	}()

	for done := false; !done; {
		select {
		case <-wait:
			done = true
		case <-time.After(time.Second):
		}
		stat := cmd.Stat()
		var b bytes.Buffer
		fmt.Fprintf(&b, "decode: ")
		if nsize != 0 {
			fmt.Fprintf(&b, "total = %d - %12d [%3d%%]", nsize, stat.rbytes, 100*stat.rbytes/nsize)
		} else {
			fmt.Fprintf(&b, "total = %12d", stat.rbytes)
		}
		fmt.Fprintf(&b, "  write=%-12d", stat.wbytes)
		fmt.Fprintf(&b, "  entry=%-12d", stat.nentry)
		log.Info(b.String())
	}
	log.Info("decode: done")
}