Exemplo n.º 1
0
func openReadFile(name string) (*os.File, int64) {
	f, err := os.Open(name)
	if err != nil {
		log.PanicErrorf(err, "cannot open file-reader '%s'", name)
	}
	s, err := f.Stat()
	if err != nil {
		log.PanicErrorf(err, "cannot stat file-reader '%s'", name)
	}
	return f, s.Size()
}
Exemplo n.º 2
0
func openSyncConn(target string, authCode string) (net.Conn, chan int64) {
	c := openNetConn(target)

	// send auth to master
	if len(authCode) > 0 {
		cmd := fmt.Sprintf("*2\r\n$4\r\nauth\r\n$%d\r\n%s\r\n", len(authCode), authCode)
		if _, err := ioutils.WriteFull(c, []byte(cmd)); err != nil {
			log.PanicError(err, "write auth command failed")
		}

		resp := make([]byte, 5)
		if _, err := io.ReadFull(c, resp); err != nil {
			log.PanicError(err, "read auth response failed")
		}

		if string(resp) != "+OK\r\n" {
			log.Panic("auth failed")
		}

	}

	if _, err := ioutils.WriteFull(c, []byte("*1\r\n$4\r\nsync\r\n")); err != nil {
		log.PanicError(err, "write sync command failed")
	}
	size := make(chan int64)
	go func() {
		var rsp string
		for {
			b := []byte{0}
			if _, err := c.Read(b); err != nil {
				log.PanicErrorf(err, "read sync response = '%s'", rsp)
			}
			if len(rsp) == 0 && b[0] == '\n' {
				size <- 0
				continue
			}
			rsp += string(b)
			if strings.HasSuffix(rsp, "\r\n") {
				break
			}
		}
		if rsp[0] != '$' {
			log.Panicf("invalid sync response, rsp = '%s'", rsp)
		}
		n, err := strconv.Atoi(rsp[1 : len(rsp)-2])
		if err != nil || n <= 0 {
			log.PanicErrorf(err, "invalid sync response = '%s', n = %d", rsp, n)
		}
		size <- int64(n)
	}()
	return c, size
}
Exemplo n.º 3
0
func openWriteFile(name string) *os.File {
	f, err := os.OpenFile(name, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0666)
	if err != nil {
		log.PanicErrorf(err, "cannot open file-writer '%s'", name)
	}
	return f
}
Exemplo n.º 4
0
func openNetConn(target string) net.Conn {
	c, err := net.Dial("tcp", target)
	if err != nil {
		log.PanicErrorf(err, "cannot connect to '%s'", target)
	}
	return c
}
Exemplo n.º 5
0
func (cmd *cmdRestore) RestoreCommand(reader *bufio.Reader, slave string, nsize int64) {
	var forward, nbypass atomic2.Int64
	c := openNetConn(slave)
	defer c.Close()

	writer := bufio.NewWriterSize(c, WriterBufferSize)
	defer flushWriter(writer)

	discard := bufio.NewReaderSize(c, ReaderBufferSize)

	go func() {
		var bypass bool = false
		for {
			resp := redis.MustDecode(reader)
			if cmd, args, err := redis.ParseArgs(resp); err != nil {
				log.PanicError(err, "parse command arguments failed")
			} else if cmd != "ping" {
				if cmd == "select" {
					if len(args) != 1 {
						log.Panicf("select command len(args) = %d", len(args))
					}
					s := string(args[0])
					n, err := parseInt(s, MinDB, MaxDB)
					if err != nil {
						log.PanicErrorf(err, "parse db = %s failed", s)
					}
					bypass = !acceptDB(uint32(n))
				}
				if bypass {
					nbypass.Incr()
					continue
				}
			}
			redis.MustEncode(writer, resp)
			flushWriter(writer)
			forward.Incr()
			redis.MustDecode(discard)
		}
	}()

	for {
		lastForward := forward.Get()
		lastByPass := nbypass.Get()
		time.Sleep(time.Second)
		log.Infof("restore: +forward=%-6d  +bypass=%-6d\n", forward.Get()-lastForward, nbypass.Get()-lastByPass)
	}
}
Exemplo n.º 6
0
func (cmd *cmdSync) SyncCommand(reader *bufio.Reader, slave string) {
	var forward, nbypass atomic2.Int64
	c := openNetConn(slave)
	defer c.Close()

	writer := bufio.NewWriterSize(c, WriterBufferSize)
	defer flushWriter(writer)

	go func() {
		p := make([]byte, ReaderBufferSize)
		for {
			cnt := iocopy(c, ioutil.Discard, p, len(p))
			cmd.nrecv.Add(int64(cnt))
		}
	}()

	var mu sync.Mutex
	go func() {
		for {
			time.Sleep(time.Second)
			mu.Lock()
			flushWriter(writer)
			mu.Unlock()
		}
	}()

	go func() {
		var bypass bool = false
		for {
			resp := redis.MustDecode(reader)
			if cmd, args, err := redis.ParseArgs(resp); err != nil {
				log.PanicError(err, "parse command arguments failed")
			} else if cmd != "ping" {
				if cmd == "select" {
					if len(args) != 1 {
						log.Panicf("select command len(args) = %d", len(args))
					}
					s := string(args[0])
					n, err := parseInt(s, MinDB, MaxDB)
					if err != nil {
						log.PanicErrorf(err, "parse db = %s failed", s)
					}
					bypass = !acceptDB(uint32(n))
				}
				if bypass {
					nbypass.Incr()
					continue
				}
			}
			mu.Lock()
			redis.MustEncode(writer, resp)
			mu.Unlock()
			forward.Incr()
		}
	}()

	for {
		lastForward := forward.Get()
		lastByPass := nbypass.Get()
		lastRead := cmd.nread.Get()
		lastRecv := cmd.nrecv.Get()
		time.Sleep(time.Second)
		log.Infof("sync: +forward=%-6d  +bypass=%-6d  +read=%-9d  +recv=%-9d\n", forward.Get()-lastForward, nbypass.Get()-lastByPass, cmd.nread.Get()-lastRead, cmd.nrecv.Get()-lastRecv)
	}
}
Exemplo n.º 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  [--extra]     [--faketime=FAKETIME] [--filterdb=DB]
	redis-port dump     [--ncpu=N]  [--parallel=M]   --from=MASTER   [--output=OUTPUT] [--extra] [--password=PASSWORD]
	redis-port sync     [--ncpu=N]  [--parallel=M]   --from=MASTER    --target=TARGET  [--sockfile=FILE [--filesize=SIZE]] [--filterdb=DB] [--password=PASSWORD]

Options:
	-P PASSWORD, --password           Set master's auth code.
	-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.
	--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 *.
`
	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.target, _ = d["--target"].(string)
	args.from, _ = d["--from"].(string)

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

	args.auth, _ = d["--password"].(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()
	}
}