func myScan(in proto.PkgScanReq, au Authorize, t *testing.T) proto.PkgScanResp {
var pkg = make([]byte, in.Length())
_, err := in.Encode(pkg)
if err != nil {
t.Fatalf("Encode failed: ", err)
}
pkg = testTbl.Scan(&PkgArgs{in.Cmd, in.DbId, in.Seq, pkg}, au)
var out proto.PkgScanResp
_, err = out.Decode(pkg)
if err != nil {
t.Fatalf("Decode failed: ", err)
}
if out.ErrCode != 0 {
t.Fatalf("Failed with ErrCode %d", out.ErrCode)
}
if out.DbId != in.DbId || out.Seq != in.Seq {
t.Fatalf("DbId/Seq mismatch")
}
return out
}
func (tbl *Table) Scan(req *PkgArgs, au Authorize) []byte {
var out proto.PkgScanResp
out.Cmd = req.Cmd
out.DbId = req.DbId
out.Seq = req.Seq
var in proto.PkgScanReq
n, err := in.Decode(req.Pkg)
if err != nil || n != len(req.Pkg) {
return errorHandle(&out, table.EcDecodeFail)
}
out.PkgFlag = in.PkgFlag
if in.DbId == proto.AdminDbId {
return errorHandle(&out, table.EcInvDbId)
}
if !au.IsAuth(in.DbId) {
return errorHandle(&out, table.EcNoPrivilege)
}
if in.ColSpace == proto.ColSpaceScore1 {
tbl.zScanSortScore(&in, &out)
return replyHandle(&out)
}
var scanColSpace uint8 = proto.ColSpaceDefault
if in.ColSpace == proto.ColSpaceScore2 {
scanColSpace = proto.ColSpaceScore2
}
var it = tbl.db.NewIterator(nil)
defer it.Destroy()
var scanAsc = (in.PkgFlag&proto.FlagScanAsc != 0)
var startSeek = (in.PkgFlag&proto.FlagScanKeyStart != 0)
if scanAsc {
if startSeek {
// Seek to the first element
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace, in.RowKey, nil))
} else {
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace,
in.RowKey, in.ColKey))
}
} else {
if startSeek {
// Seek to the last element
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace+1, in.RowKey, nil))
} else {
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace,
in.RowKey, in.ColKey))
}
if !it.Valid() {
it.SeekToLast()
}
}
out.PkgFlag |= proto.FlagScanEnd
var first = true
var scanNum = int(in.Num)
var pkgLen = proto.HeadSize + 1000
for i := 0; it.Valid() && i < scanNum+1; iterMove(it, scanAsc) {
_, dbId, tableId, colSpace, rowKey, colKey := parseRawKey(it.Key())
if dbId != in.DbId || tableId != in.TableId ||
colSpace != scanColSpace || bytes.Compare(rowKey, in.RowKey) != 0 {
if first {
first = false
continue
} else {
break
}
}
if first {
first = false
}
if !startSeek {
if scanAsc {
if bytes.Compare(colKey, in.ColKey) <= 0 {
continue
}
} else {
if bytes.Compare(colKey, in.ColKey) >= 0 {
continue
}
}
}
if i < scanNum {
var kv proto.KeyValue
kv.TableId = in.TableId
kv.RowKey = in.RowKey
kv.ColKey = colKey
kv.Value, kv.Score = parseRawValue(it.Value())
if len(kv.Value) > 0 {
kv.CtrlFlag |= proto.CtrlValue
}
if kv.Score != 0 {
kv.CtrlFlag |= proto.CtrlScore
}
out.Kvs = append(out.Kvs, kv)
pkgLen += kv.Length()
if pkgLen > proto.MaxPkgLen/2 {
out.PkgFlag &^= proto.FlagScanEnd
break
}
} else {
out.PkgFlag &^= proto.FlagScanEnd
break
}
i++
}
return replyHandle(&out)
}
func (tbl *Table) zScanSortScore(in *proto.PkgScanReq, out *proto.PkgScanResp) {
var it = tbl.db.NewIterator(nil)
defer it.Destroy()
var scanAsc = (in.PkgFlag&proto.FlagScanAsc != 0)
var startSeek = (in.PkgFlag&proto.FlagScanKeyStart != 0)
var scanColSpace uint8 = proto.ColSpaceScore1
if scanAsc {
if startSeek {
// Seek to the first element
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace,
in.RowKey, nil))
} else {
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace,
in.RowKey, newScoreColKey(in.Score, in.ColKey)))
}
} else {
if startSeek {
// Seek to the last element
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace+1,
in.RowKey, nil))
} else {
it.Seek(getRawKey(in.DbId, in.TableId, scanColSpace,
in.RowKey, newScoreColKey(in.Score, in.ColKey)))
}
if !it.Valid() {
it.SeekToLast()
}
}
out.PkgFlag |= proto.FlagScanEnd
var first = true
var scanNum = int(in.Num)
var pkgLen = proto.HeadSize + 1000
for i := 0; it.Valid() && i < scanNum+1; iterMove(it, scanAsc) {
_, dbId, tableId, colSpace, rowKey, colKey := parseRawKey(it.Key())
if dbId != in.DbId || tableId != in.TableId ||
colSpace != scanColSpace || bytes.Compare(rowKey, in.RowKey) != 0 {
if first {
first = false
continue
} else {
break
}
}
if first {
first = false
}
if len(colKey) < 8 {
continue // skip invalid record
}
zColKey, zScore := parseZColKey(colKey)
if !startSeek {
if scanAsc {
if zScore < in.Score {
continue
}
if zScore == in.Score && bytes.Compare(zColKey, in.ColKey) <= 0 {
continue
}
} else {
if zScore > in.Score {
continue
}
if zScore == in.Score && bytes.Compare(zColKey, in.ColKey) >= 0 {
continue
}
}
}
if i < scanNum {
var kv proto.KeyValue
kv.TableId = in.TableId
kv.RowKey = in.RowKey
kv.ColKey = zColKey
kv.Value, _ = parseRawValue(it.Value())
kv.Score = zScore
if len(kv.Value) > 0 {
kv.CtrlFlag |= proto.CtrlValue
}
if kv.Score != 0 {
kv.CtrlFlag |= proto.CtrlScore
}
out.Kvs = append(out.Kvs, kv)
pkgLen += kv.Length()
if pkgLen > proto.MaxPkgLen/2 {
out.PkgFlag &^= proto.FlagScanEnd
break
}
} else {
out.PkgFlag &^= proto.FlagScanEnd
break
}
i++
}
}
// Get call reply. The real reply types are:
// Auth/Ping/(Z)Set/(Z)Del: nil;
// (Z)Get: GetReply;
// (Z)Incr: IncrReply;
// (Z)MGet: []GetReply;
// (Z)MSet: []SetReply;
// (Z)MDel: []DelReply;
// (Z)MIncr: []IncrReply;
// (Z)Scan: ScanReply;
// Dump: DumpReply;
func (call *Call) Reply() (interface{}, error) {
if call.err != nil {
return nil, call.err
}
if !call.ready {
return nil, ErrCallNotReady
}
if proto.CmdAuth == call.cmd ||
proto.CmdPing == call.cmd ||
proto.CmdIncr == call.cmd ||
proto.CmdDel == call.cmd ||
proto.CmdSet == call.cmd ||
proto.CmdGet == call.cmd {
var p proto.PkgOneOp
_, err := p.Decode(call.pkg)
if err != nil {
call.err = err
return nil, call.err
}
if p.ErrCode < 0 {
return nil, getErr(p.ErrCode)
}
switch call.cmd {
case proto.CmdAuth:
return nil, nil
case proto.CmdPing:
return nil, nil
case proto.CmdIncr:
return IncrReply{p.ErrCode, p.TableId, copyBytes(p.RowKey),
copyBytes(p.ColKey), copyBytes(p.Value), p.Score}, nil
case proto.CmdDel:
return nil, nil
case proto.CmdSet:
return nil, nil
case proto.CmdGet:
return GetReply{p.ErrCode, p.TableId, copyBytes(p.RowKey),
copyBytes(p.ColKey), copyBytes(p.Value), p.Score, p.Cas}, nil
}
}
if proto.CmdMIncr == call.cmd ||
proto.CmdMDel == call.cmd ||
proto.CmdMSet == call.cmd ||
proto.CmdMGet == call.cmd {
var p proto.PkgMultiOp
_, err := p.Decode(call.pkg)
if err != nil {
call.err = err
return nil, call.err
}
if p.ErrCode < 0 {
return nil, getErr(p.ErrCode)
}
switch call.cmd {
case proto.CmdMIncr:
var r = make([]IncrReply, len(p.Kvs))
for i := 0; i < len(r); i++ {
r[i] = IncrReply{p.Kvs[i].ErrCode, p.Kvs[i].TableId,
copyBytes(p.Kvs[i].RowKey), copyBytes(p.Kvs[i].ColKey),
copyBytes(p.Kvs[i].Value), p.Kvs[i].Score}
}
return r, nil
case proto.CmdMDel:
var r = make([]DelReply, len(p.Kvs))
for i := 0; i < len(r); i++ {
r[i] = DelReply{p.Kvs[i].ErrCode, p.Kvs[i].TableId,
copyBytes(p.Kvs[i].RowKey), copyBytes(p.Kvs[i].ColKey)}
}
return r, nil
case proto.CmdMSet:
var r = make([]SetReply, len(p.Kvs))
for i := 0; i < len(r); i++ {
r[i] = SetReply{p.Kvs[i].ErrCode, p.Kvs[i].TableId,
copyBytes(p.Kvs[i].RowKey), copyBytes(p.Kvs[i].ColKey)}
}
return r, nil
case proto.CmdMGet:
var r = make([]GetReply, len(p.Kvs))
for i := 0; i < len(r); i++ {
r[i] = GetReply{p.Kvs[i].ErrCode, p.Kvs[i].TableId,
copyBytes(p.Kvs[i].RowKey), copyBytes(p.Kvs[i].ColKey),
copyBytes(p.Kvs[i].Value), p.Kvs[i].Score, p.Kvs[i].Cas}
}
return r, nil
}
}
switch call.cmd {
case proto.CmdScan:
var p proto.PkgScanResp
_, err := p.Decode(call.pkg)
if err != nil {
call.err = err
return nil, call.err
}
if p.ErrCode < 0 {
return nil, getErr(p.ErrCode)
}
var r ScanReply
r.ctx = call.ctx.(scanContext)
r.TableId = r.ctx.tableId
r.RowKey = r.ctx.rowKey
r.End = (p.PkgFlag&proto.FlagScanEnd != 0)
r.Kvs = make([]ScanKV, len(p.Kvs))
for i := 0; i < len(p.Kvs); i++ {
r.Kvs[i] = ScanKV{copyBytes(p.Kvs[i].ColKey),
copyBytes(p.Kvs[i].Value), p.Kvs[i].Score}
}
return r, nil
case proto.CmdDump:
var p proto.PkgDumpResp
_, err := p.Decode(call.pkg)
if err != nil {
call.err = err
return nil, call.err
}
if p.ErrCode < 0 {
return nil, getErr(p.ErrCode)
}
var r DumpReply
r.ctx = call.ctx.(dumpContext)
r.ctx.lastSlotId = p.LastSlotId
r.ctx.slotStart = (p.PkgFlag&proto.FlagDumpSlotStart != 0)
r.End = (p.PkgFlag&proto.FlagDumpEnd != 0)
r.Kvs = make([]DumpKV, len(p.Kvs))
for i := 0; i < len(p.Kvs); i++ {
r.Kvs[i] = DumpKV{p.Kvs[i].TableId, p.Kvs[i].ColSpace,
copyBytes(p.Kvs[i].RowKey), copyBytes(p.Kvs[i].ColKey),
copyBytes(p.Kvs[i].Value), p.Kvs[i].Score}
}
return r, nil
}
switch call.cmd {
case proto.CmdSlaveOf:
return call.replyInnerCtrl(&ctrl.PkgSlaveOf{})
case proto.CmdMigrate:
return call.replyInnerCtrl(&ctrl.PkgMigrate{})
case proto.CmdSlaveSt:
return call.replyInnerCtrl(&ctrl.PkgSlaveStatus{})
case proto.CmdDelSlot:
return call.replyInnerCtrl(&ctrl.PkgDelSlot{})
}
return nil, ErrUnknownCmd
}
