func (cmd *cmdRestore) RestoreRDBFile(reader *bufio.Reader, target, passwd string, nsize int64) {
pipe := newRDBLoader(reader, &cmd.rbytes, args.parallel*32)
wait := make(chan struct{})
go func() {
defer close(wait)
group := make(chan int, args.parallel)
for i := 0; i < cap(group); i++ {
go func() {
defer func() {
group <- 0
}()
c := openRedisConn(target, passwd)
defer c.Close()
var lastdb uint32 = 0
for e := range pipe {
if !acceptDB(e.DB) {
cmd.ignore.Incr()
} else {
cmd.nentry.Incr()
if e.DB != lastdb {
lastdb = e.DB
selectDB(c, lastdb)
}
restoreRdbEntry(c, e)
}
}
}()
}
for i := 0; i < cap(group); i++ {
<-group
}
}()
for done := false; !done; {
select {
case <-wait:
done = true
case <-time.After(time.Second):
}
stat := cmd.Stat()
var b bytes.Buffer
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, " entry=%-12d", stat.nentry)
if stat.ignore != 0 {
fmt.Fprintf(&b, " ignore=%-12d", stat.ignore)
}
log.Info(b.String())
}
log.Info("restore: rdb done")
}
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
}
func (cmd *cmdDump) SendCmd(master, passwd string) (net.Conn, int64) {
c, wait := openSyncConn(master, passwd)
var nsize int64
for nsize == 0 {
select {
case nsize = <-wait:
if nsize == 0 {
log.Info("+")
}
case <-time.After(time.Second):
log.Info("-")
}
}
return c, nsize
}
func (cmd *cmdSync) SendSyncCmd(master, passwd string) (net.Conn, int64) {
c, wait := openSyncConn(master, passwd)
for {
select {
case nsize := <-wait:
if nsize == 0 {
log.Info("+")
} else {
return c, nsize
}
case <-time.After(time.Second):
log.Info("-")
}
}
}
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")
}
func (cmd *cmdSync) SyncCommand(reader *bufio.Reader, target, passwd string) {
c := openNetConn(target, passwd)
defer c.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 {
cmd.nbypass.Incr()
continue
}
}
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
}
}
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")
}