Exemplo n.º 1
0
func (cmd *cmdSync) SyncCommand(reader *bufio.Reader, target, passwd string) {
	c := openNetConn(target, passwd)
	defer c.Close()

	cr := openRedisConn(target, passwd)
	defer cr.Close()

	writer := bufio.NewWriterSize(stats.NewCountWriter(c, &cmd.wbytes), WriterBufferSize)
	defer flushWriter(writer)

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

	go func() {
		var bypass bool = false
		for {
			resp := redis.MustDecode(reader)
			if scmd, args, err := redis.ParseArgs(resp); err != nil {
				log.PanicError(err, "parse command arguments failed")
			} else if scmd != "ping" {
				if scmd == "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 || (len(args) > 0 && !acceptKey(args[0])) {
					cmd.nbypass.Incr()
					continue
				}

				if skipKey(args[0]) {
					log.Warnf("skip key: %s", args[0])
					cmd.ignore.Incr()
					continue
				}

				if aggregateKey(args[0]) && ((scmd == "lpush") || (scmd == "LPUSH")) {
					log.Infof("Aggregate Key %s", args[0])
					for i := 1; i < len(args); i++ {
						_, err := cr.Do(aggregateCmd, aggregateTarget, args[i])
						if err != nil {
							log.Warnf("SyncAggregate err at: %s %s", args[0], args[i])
							//log.PanicError(err, "sync aggregate error")
						}
					}
				}

				// set 2 sorted set in sync command
				if set2sortedKey(args[0]) {
					switch scmd {
					default:
						log.Panicf("set2sorted operate %s on key %s err", scmd, args[0])
					case "sadd":
						for i := 1; i < len(args); i++ {
							_, err := cr.Do("zadd", args[0], 1, args[i])
							if err != nil {
								log.PanicErrorf(err, "set2sorted zadd %s 1 %s", args[0], args[i])
							}
						}
					case "srem":
						for i := 1; i < len(args); i++ {
							_, err := cr.Do("zrem", args[0], args[i])
							if err != nil {
								log.PanicErrorf(err, "set2sorted zrem %s %s", args[0], args[i])
							}
						}
					case "del":
						_, err := cr.Do("del", args[0])
						if err != nil {
							log.PanicErrorf(err, "set2sorted del %s", args[0])
						}
					}
					continue
				}

				if sorted2setKey(args[0]) {
					switch scmd {
					default:
						log.Panicf("sorted2set operate %s on key %s err", scmd, args[0])
					case "zadd":
						for i := 1; i < len(args); i++ {
							if string(args[i]) != "1" {
								_, err := cr.Do("sadd", args[0], args[i])
								if err != nil {
									log.PanicErrorf(err, "sorted2set sadd %s %s", args[0], args[i])
								}
							} else {
								continue
							}
						}
					case "zrem":
						for i := 1; i < len(args); i++ {
							_, err := cr.Do("srem", args[0], args[i])
							if err != nil {
								log.PanicErrorf(err, "sorted2set srem %s %s", args[0], args[i])
							}
						}
					case "del":
						_, err := cr.Do("del", args[0])
						if err != nil {
							log.PanicErrorf(err, "sorted2set del %s", args[0])
						}
					}
					continue
				}

				// Some commands like MSET may have multi keys, but we only use
				// first for filter
			}
			cmd.forward.Incr()
			redis.MustEncode(writer, resp)
			flushWriter(writer)
		}
	}()

	for lstat := cmd.Stat(); ; {
		time.Sleep(time.Second)
		nstat := cmd.Stat()
		var b bytes.Buffer
		fmt.Fprintf(&b, "sync: ")
		fmt.Fprintf(&b, " +forward=%-6d", nstat.forward-lstat.forward)
		fmt.Fprintf(&b, " +nbypass=%-6d", nstat.nbypass-lstat.nbypass)
		fmt.Fprintf(&b, " +nbytes=%d", nstat.wbytes-lstat.wbytes)
		log.Info(b.String())
		lstat = nstat
	}
}
Exemplo n.º 2
0
func (cmd *cmdRestore) RestoreCommand(reader *bufio.Reader, target, passwd string) {
	c := openNetConn(target, passwd)
	defer c.Close()

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

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

	go func() {
		var bypass bool = false
		for {
			resp := redis.MustDecode(reader)
			if scmd, args, err := redis.ParseArgs(resp); err != nil {
				log.PanicError(err, "parse command arguments failed")
			} else if scmd != "ping" {
				if scmd == "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 skipKey(args[0]) {
					log.Warnf("skip key: %s", args[0])
					cmd.ignore.Incr()
					continue
				}

				if bypass || (len(args) > 0 && !acceptKey(args[0])) {
					cmd.nbypass.Incr()
					continue
				}

				// added for aggregating list or set
				if aggregateKey(args[0]) {
					cr := openRedisConn(target, passwd)
					defer cr.Close()
					for i := 1; i < len(args); i++ {
						_, err := cr.Do(aggregateCmd, aggregateTarget, args[i])
						if err != nil {
							log.PanicError(err, "restore aggregate error")
						}
					}
				}
			}
			cmd.forward.Incr()
			redis.MustEncode(writer, resp)
			flushWriter(writer)
		}
	}()

	for lstat := cmd.Stat(); ; {
		time.Sleep(time.Second)
		nstat := cmd.Stat()
		var b bytes.Buffer
		fmt.Fprintf(&b, "restore: ")
		fmt.Fprintf(&b, " +forward=%-6d", nstat.forward-lstat.forward)
		fmt.Fprintf(&b, " +nbypass=%-6d", nstat.nbypass-lstat.nbypass)
		log.Info(b.String())
		lstat = nstat
	}
}