func (h *Handler) doSyncFromMater(c *conn, counter *atomic2.Int64) error {
c.authenticated = true
lastACKTime := time.Now()
for {
readTotalSize := counter.Get()
if _, err := c.handleRequest(h); err != nil {
return errors.Trace(err)
}
if h.syncOffset.Get() != -1 {
h.syncOffset.Add(counter.Get() - readTotalSize)
n := time.Now()
if n.Sub(lastACKTime) > time.Second {
lastACKTime = n
// this command has no reply
if err := c.sendCommand("REPLCONF", "ACK", h.syncOffset.Get()); err != nil {
log.Errorf("send REPLCONF ACK %d err - %s", h.syncOffset.Get(), err)
}
}
}
}
return nil
}
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() {
cnt := iocopy(reader, writer, p, int(nsize-nread.Get()))
nread.Add(int64(cnt))
}
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 (s *testRedisRdbSuite) TestEncodeRdb(c *gocheck.C) {
objs := make([]struct {
db uint32
expireat uint64
key []byte
obj interface{}
typ string
}, 128)
var b bytes.Buffer
enc := NewEncoder(&b)
c.Assert(enc.EncodeHeader(), gocheck.IsNil)
for i := 0; i < len(objs); i++ {
db := uint32(i + 32)
expireat := uint64(i)
key := []byte(strconv.Itoa(i))
var obj interface{}
var typ string
switch i % 5 {
case 0:
sss := strconv.Itoa(i)
obj = sss
typ = "string"
c.Assert(enc.EncodeObject(db, key, expireat, s.toString(sss)), gocheck.IsNil)
case 1:
list := []string{}
for j := 0; j < 32; j++ {
list = append(list, fmt.Sprintf("l%d_%d", i, rand.Int()))
}
obj = list
typ = "list"
c.Assert(enc.EncodeObject(db, key, expireat, s.toList(list...)), gocheck.IsNil)
case 2:
hash := make(map[string]string)
for j := 0; j < 32; j++ {
hash[strconv.Itoa(j)] = fmt.Sprintf("h%d_%d", i, rand.Int())
}
obj = hash
typ = "hash"
c.Assert(enc.EncodeObject(db, key, expireat, s.toHash(hash)), gocheck.IsNil)
case 3:
zset := make(map[string]float64)
for j := 0; j < 32; j++ {
zset[strconv.Itoa(j)] = rand.Float64()
}
obj = zset
typ = "zset"
c.Assert(enc.EncodeObject(db, key, expireat, s.toZSet(zset)), gocheck.IsNil)
case 4:
set := []string{}
for j := 0; j < 32; j++ {
set = append(set, fmt.Sprintf("s%d_%d", i, rand.Int()))
}
obj = set
typ = "set"
c.Assert(enc.EncodeObject(db, key, expireat, s.toSet(set...)), gocheck.IsNil)
}
objs[i].db = db
objs[i].expireat = expireat
objs[i].key = key
objs[i].obj = obj
objs[i].typ = typ
}
c.Assert(enc.EncodeFooter(), gocheck.IsNil)
rdb := b.Bytes()
var cc atomic2.Int64
l := NewLoader(ioutils.NewCountReader(bytes.NewReader(rdb), &cc))
c.Assert(l.Header(), gocheck.IsNil)
var i int = 0
for {
e, err := l.NextBinEntry()
c.Assert(err, gocheck.IsNil)
if e == nil {
break
}
c.Assert(objs[i].db, gocheck.Equals, e.DB)
c.Assert(objs[i].expireat, gocheck.Equals, e.ExpireAt)
c.Assert(objs[i].key, gocheck.DeepEquals, e.Key)
o, err := DecodeDump(e.Value)
c.Assert(err, gocheck.IsNil)
switch objs[i].typ {
case "string":
s.checkString(c, o, objs[i].obj.(string))
case "list":
s.checkList(c, o, objs[i].obj.([]string))
case "hash":
s.checkHash(c, o, objs[i].obj.(map[string]string))
case "zset":
s.checkZSet(c, o, objs[i].obj.(map[string]float64))
case "set":
s.checkSet(c, o, objs[i].obj.([]string))
}
i++
}
c.Assert(i, gocheck.Equals, len(objs))
c.Assert(l.Footer(), gocheck.IsNil)
c.Assert(cc.Get(), gocheck.DeepEquals, int64(len(rdb)))
}
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)
}
}
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)
}
}
func (h *Handler) doSyncRDB(c *conn, size int64) error {
defer h.counters.syncRdbRemains.Set(0)
h.counters.syncRdbRemains.Set(size)
r := ioutils.NewCountReader(c.r, nil)
l := rdb.NewLoader(r)
if err := l.Header(); err != nil {
return err
}
ncpu := runtime.GOMAXPROCS(0)
errs := make(chan error, ncpu)
var lock sync.Mutex
var flag atomic2.Int64
loadNextEntry := func() (*rdb.BinEntry, error) {
lock.Lock()
defer lock.Unlock()
if flag.Get() != 0 {
return nil, nil
}
entry, err := l.NextBinEntry()
if err != nil || entry == nil {
flag.Set(1)
return nil, err
}
return entry, nil
}
for i := 0; i < ncpu; i++ {
go func() {
defer flag.Set(1)
for {
entry, err := loadNextEntry()
if err != nil || entry == nil {
errs <- err
return
}
db, key, value := entry.DB, entry.Key, entry.Value
ttlms := int64(0)
if entry.ExpireAt != 0 {
if v, ok := store.ExpireAtToTTLms(int64(entry.ExpireAt)); ok && v > 0 {
ttlms = v
} else {
ttlms = 1
}
}
if err := c.Store().SlotsRestore(db, [][]byte{key, store.FormatInt(ttlms), value}); err != nil {
errs <- err
return
}
}
}()
}
for {
select {
case <-time.After(time.Second):
h.counters.syncRdbRemains.Set(size - r.Count())
case err := <-errs:
for i := 1; i < cap(errs); i++ {
e := <-errs
if err == nil && e != nil {
err = e
}
}
if err != nil {
return err
}
return l.Footer()
}
}
}
func TestEncodeRdb(t *testing.T) {
objs := make([]struct {
db uint32
expireat uint64
key []byte
obj interface{}
typ string
}, 128)
var b bytes.Buffer
enc := NewEncoder(&b)
assert.ErrorIsNil(t, enc.EncodeHeader())
for i := 0; i < len(objs); i++ {
db := uint32(i + 32)
expireat := uint64(i)
key := []byte(strconv.Itoa(i))
var obj interface{}
var typ string
switch i % 5 {
case 0:
s := strconv.Itoa(i)
obj = s
typ = "string"
assert.ErrorIsNil(t, enc.EncodeObject(db, key, expireat, toString(s)))
case 1:
list := []string{}
for j := 0; j < 32; j++ {
list = append(list, fmt.Sprintf("l%d_%d", i, rand.Int()))
}
obj = list
typ = "list"
assert.ErrorIsNil(t, enc.EncodeObject(db, key, expireat, toList(list...)))
case 2:
hash := make(map[string]string)
for j := 0; j < 32; j++ {
hash[strconv.Itoa(j)] = fmt.Sprintf("h%d_%d", i, rand.Int())
}
obj = hash
typ = "hash"
assert.ErrorIsNil(t, enc.EncodeObject(db, key, expireat, toHash(hash)))
case 3:
zset := make(map[string]float64)
for j := 0; j < 32; j++ {
zset[strconv.Itoa(j)] = rand.Float64()
}
obj = zset
typ = "zset"
assert.ErrorIsNil(t, enc.EncodeObject(db, key, expireat, toZSet(zset)))
case 4:
set := []string{}
for j := 0; j < 32; j++ {
set = append(set, fmt.Sprintf("s%d_%d", i, rand.Int()))
}
obj = set
typ = "set"
assert.ErrorIsNil(t, enc.EncodeObject(db, key, expireat, toSet(set...)))
}
objs[i].db = db
objs[i].expireat = expireat
objs[i].key = key
objs[i].obj = obj
objs[i].typ = typ
}
assert.ErrorIsNil(t, enc.EncodeFooter())
rdb := b.Bytes()
var c atomic2.Int64
l := NewLoader(ioutils.NewCountReader(bytes.NewReader(rdb), &c))
assert.ErrorIsNil(t, l.Header())
var i int = 0
for {
e, err := l.NextBinEntry()
assert.ErrorIsNil(t, err)
if e == nil {
break
}
assert.Must(t, objs[i].db == e.DB)
assert.Must(t, objs[i].expireat == e.ExpireAt)
assert.Must(t, bytes.Equal(objs[i].key, e.Key))
o, err := DecodeDump(e.Value)
assert.ErrorIsNil(t, err)
switch objs[i].typ {
case "string":
checkString(t, o, objs[i].obj.(string))
case "list":
checkList(t, o, objs[i].obj.([]string))
case "hash":
checkHash(t, o, objs[i].obj.(map[string]string))
case "zset":
checkZSet(t, o, objs[i].obj.(map[string]float64))
case "set":
checkSet(t, o, objs[i].obj.([]string))
}
i++
}
assert.Must(t, i == len(objs))
assert.ErrorIsNil(t, l.Footer())
assert.Must(t, c.Get() == int64(len(rdb)))
}