func (s *Server) Dispatch(arg0 interface{}, respArg resp.Resp) (resp.Resp, error) {
if cmd, args, err := resp.ParseArgs(respArg); err != nil {
return nil, err
} else if f := s.t[cmd]; f == nil {
return nil, errors.Errorf("unknown command '%s'", cmd)
} else {
return f(arg0, args...)
}
}
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 (c *conn) dispatch(h *Handler, request redis.Resp) (redis.Resp, error) {
cmd, args, err := redis.ParseArgs(request)
if err != nil {
return toRespError(err)
}
// check cmd first, then auth
if f := h.htable[cmd]; f == nil {
return toRespErrorf("unknown command %s", cmd)
} else {
if len(h.config.Auth) > 0 && !c.authenticated && strings.ToLower(cmd) != "auth" {
return toRespErrorf("NOAUTH Authentication required")
}
return f(c, args)
}
}
func (c *conn) dispatch(h *Handler, request redis.Resp) (redis.Resp, error) {
cmd, args, err := redis.ParseArgs(request)
if err != nil {
return toRespError(err)
}
// check cmd first, then auth
if f := h.htable[cmd]; f == nil {
return toRespErrorf("unknown command %s", cmd)
} else {
if len(h.config.Auth) > 0 && !c.authenticated && strings.ToLower(cmd) != "auth" {
return toRespErrorf("NOAUTH Authentication required")
}
masterAddr := c.h.masterAddr.Get()
if len(masterAddr) > 0 && f.flag&CmdWrite > 0 && !c.isSyncing {
// we are a slave, so can not receive any write operations except from master in syncing
return toRespErrorf("READONLY You can't write against a read only slave.")
}
return f.f(c, args)
}
}
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 (s *testStoreSuite) checkSlotsMgrt(c *C, r *bufio.Reader, w *bufio.Writer, cc chan error, expect ...interface{}) {
if len(expect) != 0 {
req1, err := redis.Decode(r)
c.Assert(err, IsNil)
cmd1, args1, err := redis.ParseArgs(req1)
c.Assert(err, IsNil)
c.Assert(cmd1, Equals, "select")
c.Assert(len(args1), Equals, 1)
err = redis.Encode(w, redis.NewString("OK"))
c.Assert(err, IsNil)
err = w.Flush()
c.Assert(err, IsNil)
req2, err := redis.Decode(r)
cmd2, args2, err := redis.ParseArgs(req2)
c.Assert(err, IsNil)
c.Assert(cmd2, Equals, "slotsrestore")
c.Assert(len(args2), Equals, len(expect))
m := make(map[string]*struct {
key, value string
ttlms uint64
})
for i := 0; i < len(expect)/3; i++ {
v := &struct {
key, value string
ttlms uint64
}{key: expect[i*3].(string), value: expect[i*3+2].(string)}
v.ttlms, err = ParseUint(expect[i*3+1])
c.Assert(err, IsNil)
m[v.key] = v
}
for i := 0; i < len(expect)/3; i++ {
key := args2[i*3]
ttlms := args2[i*3+1]
value := args2[i*3+2]
v := m[string(key)]
c.Assert(v, NotNil)
c.Assert(string(key), Equals, v.key)
b, err := rdb.DecodeDump(value)
c.Assert(err, IsNil)
c.Assert(string(b.(rdb.String)), Equals, v.value)
x, err := strconv.Atoi(string(ttlms))
c.Assert(err, IsNil)
if v.ttlms == 0 {
c.Assert(x, Equals, 0)
} else {
c.Assert(x, Not(Equals), 0)
c.Assert(math.Abs(float64(x)-float64(v.ttlms)) < 1000, Equals, true)
}
}
err = redis.Encode(w, redis.NewString("OK"))
c.Assert(err, IsNil)
err = w.Flush()
c.Assert(err, IsNil)
}
select {
case err := <-cc:
c.Assert(err, IsNil)
case <-time.After(time.Second):
c.Fatal("timeout error")
}
}