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refactor scan

This commit is contained in:
siddontang 2015-03-02 11:10:54 +08:00
parent 218700ce44
commit f34d3ac27b
26 changed files with 257 additions and 330 deletions
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37
ledis/const.go
View File

@ -6,6 +6,43 @@ import (
const Version = "0.4"
type DataType byte
// for out use
const (
KV DataType = iota
LIST
HASH
SET
ZSET
)
func (d DataType) String() string {
switch d {
case KV:
return KVName
case LIST:
return ListName
case HASH:
return HashName
case SET:
return SetName
case ZSET:
return ZSetName
default:
return "unknown"
}
}
const (
KVName = "KV"
ListName = "LIST"
HashName = "HASH"
SetName = "SET"
ZSetName = "ZSET"
)
// for backend store
const (
NoneType byte = 0
KVType byte = 1

4
ledis/ledis_db.go
View File

@ -128,7 +128,7 @@ func (db *DB) flushType(t *batch, dataType byte) (drop int64, err error) {
}
var keys [][]byte
keys, err = db.scan(metaDataType, nil, 1024, false, "")
keys, err = db.scanGeneric(metaDataType, nil, 1024, false, "", false)
for len(keys) != 0 || err != nil {
for _, key := range keys {
deleteFunc(t, key)
@ -141,7 +141,7 @@ func (db *DB) flushType(t *batch, dataType byte) (drop int64, err error) {
} else {
drop += int64(len(keys))
}
keys, err = db.scan(metaDataType, nil, 1024, false, "")
keys, err = db.scanGeneric(metaDataType, nil, 1024, false, "", false)
}
return
}

73
ledis/scan.go
View File

@ -9,15 +9,46 @@ import (
var errDataType = errors.New("error data type")
var errMetaKey = errors.New("error meta key")
func (db *DB) scan(dataType byte, key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scanGeneric(dataType, key, count, inclusive, match, false)
//fif inclusive is true, scan range [cursor, inf) else (cursor, inf)
func (db *DB) Scan(dataType DataType, cursor []byte, count int, inclusive bool, match string) ([][]byte, error) {
storeDataType, err := getDataStoreType(dataType)
if err != nil {
return nil, err
}
func (db *DB) revscan(dataType byte, key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scanGeneric(dataType, key, count, inclusive, match, true)
return db.scanGeneric(storeDataType, cursor, count, inclusive, match, false)
}
func (db *DB) scanGeneric(dataType byte, key []byte, count int,
//if inclusive is true, revscan range (-inf, cursor] else (inf, cursor)
func (db *DB) RevScan(dataType DataType, cursor []byte, count int, inclusive bool, match string) ([][]byte, error) {
storeDataType, err := getDataStoreType(dataType)
if err != nil {
return nil, err
}
return db.scanGeneric(storeDataType, cursor, count, inclusive, match, true)
}
func getDataStoreType(dataType DataType) (byte, error) {
var storeDataType byte
switch dataType {
case KV:
storeDataType = KVType
case LIST:
storeDataType = LMetaType
case HASH:
storeDataType = HSizeType
case SET:
storeDataType = SSizeType
case ZSET:
storeDataType = ZSizeType
default:
return 0, errDataType
}
return storeDataType, nil
}
func (db *DB) scanGeneric(storeDataType byte, key []byte, count int,
inclusive bool, match string, reverse bool) ([][]byte, error) {
var minKey, maxKey []byte
var err error
@ -32,10 +63,10 @@ func (db *DB) scanGeneric(dataType byte, key []byte, count int,
tp := store.RangeOpen
if !reverse {
if minKey, err = db.encodeScanMinKey(dataType, key); err != nil {
if minKey, err = db.encodeScanMinKey(storeDataType, key); err != nil {
return nil, err
}
if maxKey, err = db.encodeScanMaxKey(dataType, nil); err != nil {
if maxKey, err = db.encodeScanMaxKey(storeDataType, nil); err != nil {
return nil, err
}
@ -43,10 +74,10 @@ func (db *DB) scanGeneric(dataType byte, key []byte, count int,
tp = store.RangeROpen
}
} else {
if minKey, err = db.encodeScanMinKey(dataType, nil); err != nil {
if minKey, err = db.encodeScanMinKey(storeDataType, nil); err != nil {
return nil, err
}
if maxKey, err = db.encodeScanMaxKey(dataType, key); err != nil {
if maxKey, err = db.encodeScanMaxKey(storeDataType, key); err != nil {
return nil, err
}
@ -69,7 +100,7 @@ func (db *DB) scanGeneric(dataType byte, key []byte, count int,
v := make([][]byte, 0, count)
for i := 0; it.Valid() && i < count; it.Next() {
if k, err := db.decodeScanKey(dataType, it.Key()); err != nil {
if k, err := db.decodeScanKey(storeDataType, it.Key()); err != nil {
continue
} else if r != nil && !r.Match(k) {
continue
@ -82,36 +113,36 @@ func (db *DB) scanGeneric(dataType byte, key []byte, count int,
return v, nil
}
func (db *DB) encodeScanMinKey(dataType byte, key []byte) ([]byte, error) {
func (db *DB) encodeScanMinKey(storeDataType byte, key []byte) ([]byte, error) {
if len(key) == 0 {
return db.encodeScanKey(dataType, nil)
return db.encodeScanKey(storeDataType, nil)
} else {
if err := checkKeySize(key); err != nil {
return nil, err
}
return db.encodeScanKey(dataType, key)
return db.encodeScanKey(storeDataType, key)
}
}
func (db *DB) encodeScanMaxKey(dataType byte, key []byte) ([]byte, error) {
func (db *DB) encodeScanMaxKey(storeDataType byte, key []byte) ([]byte, error) {
if len(key) > 0 {
if err := checkKeySize(key); err != nil {
return nil, err
}
return db.encodeScanKey(dataType, key)
return db.encodeScanKey(storeDataType, key)
}
k, err := db.encodeScanKey(dataType, nil)
k, err := db.encodeScanKey(storeDataType, nil)
if err != nil {
return nil, err
}
k[len(k)-1] = dataType + 1
k[len(k)-1] = storeDataType + 1
return k, nil
}
func (db *DB) encodeScanKey(dataType byte, key []byte) ([]byte, error) {
switch dataType {
func (db *DB) encodeScanKey(storeDataType byte, key []byte) ([]byte, error) {
switch storeDataType {
case KVType:
return db.encodeKVKey(key), nil
case LMetaType:
@ -128,8 +159,8 @@ func (db *DB) encodeScanKey(dataType byte, key []byte) ([]byte, error) {
return nil, errDataType
}
}
func (db *DB) decodeScanKey(dataType byte, ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != dataType {
func (db *DB) decodeScanKey(storeDataType byte, ek []byte) ([]byte, error) {
if len(ek) < 2 || ek[0] != db.index || ek[1] != storeDataType {
return nil, errMetaKey
}
return ek[2:], nil

102
ledis/scan_test.go
View File

@ -21,13 +21,13 @@ func TestDBScan(t *testing.T) {
db.FlushAll()
if v, err := db.Scan(nil, 10, true, ""); err != nil {
if v, err := db.Scan(KV, nil, 10, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 0 {
t.Fatal(len(v))
}
if v, err := db.RevScan(nil, 10, true, ""); err != nil {
if v, err := db.RevScan(KV, nil, 10, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 0 {
t.Fatal(len(v))
@ -37,73 +37,73 @@ func TestDBScan(t *testing.T) {
db.Set([]byte("b"), []byte{})
db.Set([]byte("c"), []byte{})
if v, err := db.Scan(nil, 1, true, ""); err != nil {
if v, err := db.Scan(KV, nil, 1, true, ""); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "a")
}
if v, err := db.Scan([]byte("a"), 2, false, ""); err != nil {
if v, err := db.Scan(KV, []byte("a"), 2, false, ""); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "b", "c")
}
if v, err := db.Scan(nil, 3, true, ""); err != nil {
if v, err := db.Scan(KV, nil, 3, true, ""); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "a", "b", "c")
}
if v, err := db.Scan(nil, 3, true, "b"); err != nil {
if v, err := db.Scan(KV, nil, 3, true, "b"); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "b")
}
if v, err := db.Scan(nil, 3, true, "."); err != nil {
if v, err := db.Scan(KV, nil, 3, true, "."); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "a", "b", "c")
}
if v, err := db.Scan(nil, 3, true, "a+"); err != nil {
if v, err := db.Scan(KV, nil, 3, true, "a+"); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "a")
}
if v, err := db.RevScan(nil, 1, true, ""); err != nil {
if v, err := db.RevScan(KV, nil, 1, true, ""); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "c")
}
if v, err := db.RevScan([]byte("c"), 2, false, ""); err != nil {
if v, err := db.RevScan(KV, []byte("c"), 2, false, ""); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "b", "a")
}
if v, err := db.RevScan(nil, 3, true, ""); err != nil {
if v, err := db.RevScan(KV, nil, 3, true, ""); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "c", "b", "a")
}
if v, err := db.RevScan(nil, 3, true, "b"); err != nil {
if v, err := db.RevScan(KV, nil, 3, true, "b"); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "b")
}
if v, err := db.RevScan(nil, 3, true, "."); err != nil {
if v, err := db.RevScan(KV, nil, 3, true, "."); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "c", "b", "a")
}
if v, err := db.RevScan(nil, 3, true, "c+"); err != nil {
if v, err := db.RevScan(KV, nil, 3, true, "c+"); err != nil {
t.Fatal(err)
} else {
checkTestScan(t, v, "c")
@ -125,7 +125,7 @@ func TestDBHScan(t *testing.T) {
k3 := []byte("k3")
db.HSet(k3, []byte("3"), []byte{})
if v, err := db.HScan(nil, 1, true, ""); err != nil {
if v, err := db.Scan(HASH, nil, 1, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 1 {
t.Fatal("invalid length ", len(v))
@ -133,7 +133,7 @@ func TestDBHScan(t *testing.T) {
t.Fatal("invalid value ", string(v[0]))
}
if v, err := db.HScan(k1, 2, true, ""); err != nil {
if v, err := db.Scan(HASH, k1, 2, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))
@ -143,7 +143,7 @@ func TestDBHScan(t *testing.T) {
t.Fatal("invalid value ", string(v[1]))
}
if v, err := db.HScan(k1, 2, false, ""); err != nil {
if v, err := db.Scan(HASH, k1, 2, false, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))
@ -169,7 +169,7 @@ func TestDBZScan(t *testing.T) {
k3 := []byte("k3")
db.ZAdd(k3, ScorePair{3, []byte("m")})
if v, err := db.ZScan(nil, 1, true, ""); err != nil {
if v, err := db.Scan(ZSET, nil, 1, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 1 {
t.Fatal("invalid length ", len(v))
@ -177,7 +177,7 @@ func TestDBZScan(t *testing.T) {
t.Fatal("invalid value ", string(v[0]))
}
if v, err := db.ZScan(k1, 2, true, ""); err != nil {
if v, err := db.Scan(ZSET, k1, 2, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))
@ -187,7 +187,7 @@ func TestDBZScan(t *testing.T) {
t.Fatal("invalid value ", string(v[1]))
}
if v, err := db.ZScan(k1, 2, false, ""); err != nil {
if v, err := db.Scan(ZSET, k1, 2, false, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))
@ -219,7 +219,7 @@ func TestDBLScan(t *testing.T) {
t.Fatal(err.Error())
}
if v, err := db.LScan(nil, 1, true, ""); err != nil {
if v, err := db.Scan(LIST, nil, 1, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 1 {
t.Fatal("invalid length ", len(v))
@ -227,7 +227,7 @@ func TestDBLScan(t *testing.T) {
t.Fatal("invalid value ", string(v[0]))
}
if v, err := db.LScan(k1, 2, true, ""); err != nil {
if v, err := db.Scan(LIST, k1, 2, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))
@ -237,7 +237,7 @@ func TestDBLScan(t *testing.T) {
t.Fatal("invalid value ", string(v[1]))
}
if v, err := db.LScan(k1, 2, false, ""); err != nil {
if v, err := db.Scan(LIST, k1, 2, false, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))
@ -249,56 +249,6 @@ func TestDBLScan(t *testing.T) {
}
func TestDBBScan(t *testing.T) {
// db := getTestDB()
// db.bFlush()
// k1 := []byte("k1")
// if _, err := db.BSetBit(k1, 1, 1); err != nil {
// t.Fatal(err.Error())
// }
// k2 := []byte("k2")
// if _, err := db.BSetBit(k2, 1, 1); err != nil {
// t.Fatal(err.Error())
// }
// k3 := []byte("k3")
// if _, err := db.BSetBit(k3, 1, 0); err != nil {
// t.Fatal(err.Error())
// }
// if v, err := db.BScan(nil, 1, true, ""); err != nil {
// t.Fatal(err)
// } else if len(v) != 1 {
// t.Fatal("invalid length ", len(v))
// } else if string(v[0]) != "k1" {
// t.Fatal("invalid value ", string(v[0]))
// }
// if v, err := db.BScan(k1, 2, true, ""); err != nil {
// t.Fatal(err)
// } else if len(v) != 2 {
// t.Fatal("invalid length ", len(v))
// } else if string(v[0]) != "k1" {
// t.Fatal("invalid value ", string(v[0]))
// } else if string(v[1]) != "k2" {
// t.Fatal("invalid value ", string(v[1]))
// }
// if v, err := db.BScan(k1, 2, false, ""); err != nil {
// t.Fatal(err)
// } else if len(v) != 2 {
// t.Fatal("invalid length ", len(v))
// } else if string(v[0]) != "k2" {
// t.Fatal("invalid value ", string(v[0]))
// } else if string(v[1]) != "k3" {
// t.Fatal("invalid value ", string(v[1]))
// }
}
func TestDBSScan(t *testing.T) {
db := getTestDB()
@ -319,7 +269,7 @@ func TestDBSScan(t *testing.T) {
t.Fatal(err.Error())
}
if v, err := db.SScan(nil, 1, true, ""); err != nil {
if v, err := db.Scan(SET, nil, 1, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 1 {
t.Fatal("invalid length ", len(v))
@ -327,7 +277,7 @@ func TestDBSScan(t *testing.T) {
t.Fatal("invalid value ", string(v[0]))
}
if v, err := db.SScan(k1, 2, true, ""); err != nil {
if v, err := db.Scan(SET, k1, 2, true, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))
@ -337,7 +287,7 @@ func TestDBSScan(t *testing.T) {
t.Fatal("invalid value ", string(v[1]))
}
if v, err := db.SScan(k1, 2, false, ""); err != nil {
if v, err := db.Scan(SET, k1, 2, false, ""); err != nil {
t.Fatal(err)
} else if len(v) != 2 {
t.Fatal("invalid length ", len(v))

10
ledis/t_bit.go
View File

@ -922,16 +922,6 @@ func (db *DB) BPersist(key []byte) (int64, error) {
return n, err
}
func (db *DB) BScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
log.Error("bitmap type will be deprecated later, please use bit operations in kv type")
return db.scan(BitMetaType, key, count, inclusive, match)
}
func (db *DB) BRevScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
log.Error("bitmap type will be deprecated later, please use bit operations in kv type")
return db.revscan(BitMetaType, key, count, inclusive, match)
}
func (db *DB) bFlush() (drop int64, err error) {
t := db.binBatch
t.Lock()

8
ledis/t_hash.go
View File

@ -460,14 +460,6 @@ func (db *DB) hFlush() (drop int64, err error) {
return db.flushType(t, HashType)
}
func (db *DB) HScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(HSizeType, key, count, inclusive, match)
}
func (db *DB) HRevScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.revscan(HSizeType, key, count, inclusive, match)
}
func (db *DB) HExpire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue

4
ledis/t_hash_test.go
View File

@ -114,7 +114,7 @@ func TestHFlush(t *testing.T) {
}
}
if v, err := db.HScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(HASH, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 2000 {
t.Fatal("invalid value ", len(v))
@ -135,7 +135,7 @@ func TestHFlush(t *testing.T) {
t.Fatal("invalid value ", n)
}
if v, err := db.HScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(HASH, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 0 {
t.Fatal("invalid value length ", len(v))

10
ledis/t_kv.go
View File

@ -347,16 +347,6 @@ func (db *DB) flush() (drop int64, err error) {
return db.flushType(t, KVType)
}
//if inclusive is true, scan range [key, inf) else (key, inf)
func (db *DB) Scan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(KVType, key, count, inclusive, match)
}
//if inclusive is true, revscan range (-inf, key] else (inf, key)
func (db *DB) RevScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.revscan(KVType, key, count, inclusive, match)
}
func (db *DB) Expire(key []byte, duration int64) (int64, error) {
if duration <= 0 {
return 0, errExpireValue

4
ledis/t_kv_test.go
View File

@ -282,7 +282,7 @@ func TestKVFlush(t *testing.T) {
}
}
if v, err := db.Scan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(KV, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 2000 {
t.Fatal("invalid value ", len(v))
@ -303,7 +303,7 @@ func TestKVFlush(t *testing.T) {
t.Fatal("invalid value ", n)
}
if v, err := db.Scan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(KV, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 0 {
t.Fatal("invalid value length ", len(v))

8
ledis/t_list.go
View File

@ -480,14 +480,6 @@ func (db *DB) LPersist(key []byte) (int64, error) {
return n, err
}
func (db *DB) LScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(LMetaType, key, count, inclusive, match)
}
func (db *DB) LRevScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.revscan(LMetaType, key, count, inclusive, match)
}
func (db *DB) lEncodeMinKey() []byte {
return db.lEncodeMetaKey(nil)
}

4
ledis/t_list_test.go
View File

@ -145,7 +145,7 @@ func TestLFlush(t *testing.T) {
}
}
if v, err := db.LScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(LIST, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 2000 {
t.Fatal("invalid value ", len(v))
@ -157,7 +157,7 @@ func TestLFlush(t *testing.T) {
t.Fatal("invalid value ", n)
}
if v, err := db.LScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(LIST, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 0 {
t.Fatal("invalid value length ", len(v))

8
ledis/t_set.go
View File

@ -607,11 +607,3 @@ func (db *DB) SPersist(key []byte) (int64, error) {
err = t.Commit()
return n, err
}
func (db *DB) SScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(SSizeType, key, count, inclusive, match)
}
func (db *DB) SRevScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.revscan(SSizeType, key, count, inclusive, match)
}

4
ledis/t_set_test.go
View File

@ -352,7 +352,7 @@ func TestSFlush(t *testing.T) {
}
}
if v, err := db.SScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(SET, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 2000 {
t.Fatal("invalid value ", len(v))
@ -364,7 +364,7 @@ func TestSFlush(t *testing.T) {
t.Fatal("invalid value ", n)
}
if v, err := db.SScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(SET, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 0 {
t.Fatal("invalid value length ", len(v))

8
ledis/t_zset.go
View File

@ -936,14 +936,6 @@ func (db *DB) ZInterStore(destKey []byte, srcKeys [][]byte, weights []int64, agg
return n, nil
}
func (db *DB) ZScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.scan(ZSizeType, key, count, inclusive, match)
}
func (db *DB) ZRevScan(key []byte, count int, inclusive bool, match string) ([][]byte, error) {
return db.revscan(ZSizeType, key, count, inclusive, match)
}
func (db *DB) ZRangeByLex(key []byte, min []byte, max []byte, rangeType uint8, offset int, count int) ([][]byte, error) {
if min == nil {
min = db.zEncodeStartSetKey(key)

4
ledis/t_zset_test.go
View File

@ -391,7 +391,7 @@ func TestZScan(t *testing.T) {
}
}
if v, err := db.ZScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(ZSET, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 2000 {
t.Fatal("invalid value ", len(v))
@ -403,7 +403,7 @@ func TestZScan(t *testing.T) {
t.Fatal("invalid value ", n)
}
if v, err := db.ZScan(nil, 3000, true, ""); err != nil {
if v, err := db.Scan(ZSET, nil, 3000, true, ""); err != nil {
t.Fatal(err.Error())
} else if len(v) != 0 {
t.Fatal("invalid value length ", len(v))

12
server/cmd_bit.go
View File

@ -274,14 +274,6 @@ func bpersistCommand(c *client) error {
return nil
}
func bxscanCommand(c *client) error {
return xscanGeneric(c, c.db.BScan)
}
func bxrevscanCommand(c *client) error {
return xscanGeneric(c, c.db.BRevScan)
}
func init() {
register("bget", bgetCommand)
register("bdelete", bdeleteCommand)
@ -294,8 +286,4 @@ func init() {
register("bexpireat", bexpireAtCommand)
register("bttl", bttlCommand)
register("bpersist", bpersistCommand)
register("bxscan", bxscanCommand)
register("bxrevscan", bxrevscanCommand)
register("xbscan", bxscanCommand)
register("xbrevscan", bxrevscanCommand)
}

12
server/cmd_hash.go
View File

@ -292,14 +292,6 @@ func hpersistCommand(c *client) error {
return nil
}
func hxscanCommand(c *client) error {
return xscanGeneric(c, c.db.HScan)
}
func hxrevscanCommand(c *client) error {
return xscanGeneric(c, c.db.HRevScan)
}
func xhexistsCommand(c *client) error {
args := c.args
if len(args) != 1 {
@ -334,9 +326,5 @@ func init() {
register("hexpireat", hexpireAtCommand)
register("httl", httlCommand)
register("hpersist", hpersistCommand)
register("hxscan", hxscanCommand)
register("hxrevscan", hxrevscanCommand)
register("xhscan", hxscanCommand)
register("xhrevscan", hxrevscanCommand)
register("xhexists", xhexistsCommand)
}

80
server/cmd_kv.go
View File

@ -1,10 +1,8 @@
package server
import (
"github.com/siddontang/go/hack"
"github.com/siddontang/ledisdb/ledis"
"strconv"
"strings"
)
// func getCommand(c *client) error {
@ -315,82 +313,6 @@ func persistCommand(c *client) error {
return nil
}
func parseScanArgs(c *client) (key []byte, match string, count int, err error) {
args := c.args
count = 10
switch len(args) {
case 0:
key = nil
return
case 1, 3, 5:
key = args[0]
break
default:
err = ErrCmdParams
return
}
if len(args) == 3 {
switch strings.ToLower(hack.String(args[1])) {
case "match":
match = hack.String(args[2])
case "count":
count, err = strconv.Atoi(hack.String(args[2]))
default:
err = ErrCmdParams
return
}
} else if len(args) == 5 {
if strings.ToLower(hack.String(args[1])) != "match" {
err = ErrCmdParams
return
} else if strings.ToLower(hack.String(args[3])) != "count" {
err = ErrCmdParams
return
}
match = hack.String(args[2])
count, err = strconv.Atoi(hack.String(args[4]))
}
if count <= 0 {
err = ErrCmdParams
}
return
}
func xscanGeneric(c *client,
f func(key []byte, count int, inclusive bool, match string) ([][]byte, error)) error {
key, match, count, err := parseScanArgs(c)
if err != nil {
return err
}
if ay, err := f(key, count, false, match); err != nil {
return err
} else {
data := make([]interface{}, 2)
if len(ay) < count {
data[0] = []byte("")
} else {
data[0] = ay[len(ay)-1]
}
data[1] = ay
c.resp.writeArray(data)
}
return nil
}
func xscanCommand(c *client) error {
return xscanGeneric(c, c.db.Scan)
}
func xrevscanCommand(c *client) error {
return xscanGeneric(c, c.db.RevScan)
}
func appendCommand(c *client) error {
args := c.args
if len(args) != 2 {
@ -619,6 +541,4 @@ func init() {
register("expireat", expireAtCommand)
register("ttl", ttlCommand)
register("persist", persistCommand)
register("xscan", xscanCommand)
register("xrevscan", xrevscanCommand)
}

12
server/cmd_list.go
View File

@ -231,14 +231,6 @@ func lpersistCommand(c *client) error {
return nil
}
func lxscanCommand(c *client) error {
return xscanGeneric(c, c.db.LScan)
}
func lxrevscanCommand(c *client) error {
return xscanGeneric(c, c.db.LRevScan)
}
func blpopCommand(c *client) error {
keys, timeout, err := lParseBPopArgs(c)
if err != nil {
@ -317,9 +309,5 @@ func init() {
register("lexpireat", lexpireAtCommand)
register("lttl", lttlCommand)
register("lpersist", lpersistCommand)
register("lxscan", lxscanCommand)
register("lxrevscan", lxrevscanCommand)
register("xlscan", lxscanCommand)
register("xlrevscan", lxrevscanCommand)
register("xlexists", xlexistsCommand)
}

10
server/cmd_migrate.go
View File

@ -165,15 +165,15 @@ func xttl(db *ledis.DB, tp string, key []byte) (int64, error) {
func xscan(db *ledis.DB, tp string, count int) ([][]byte, error) {
switch strings.ToUpper(tp) {
case "KV":
return db.Scan(nil, count, false, "")
return db.Scan(KV, nil, count, false, "")
case "HASH":
return db.HScan(nil, count, false, "")
return db.Scan(HASH, nil, count, false, "")
case "LIST":
return db.LScan(nil, count, false, "")
return db.Scan(LIST, nil, count, false, "")
case "SET":
return db.SScan(nil, count, false, "")
return db.Scan(SET, nil, count, false, "")
case "ZSET":
return db.ZScan(nil, count, false, "")
return db.Scan(ZSET, nil, count, false, "")
default:
return nil, fmt.Errorf("invalid key type %s", tp)
}

4
server/cmd_replication_test.go
View File

@ -14,8 +14,8 @@ func checkDataEqual(master *App, slave *App) error {
mdb, _ := master.ldb.Select(0)
sdb, _ := slave.ldb.Select(0)
mkeys, _ := mdb.Scan(nil, 100, true, "")
skeys, _ := sdb.Scan(nil, 100, true, "")
mkeys, _ := mdb.Scan(KV, nil, 100, true, "")
skeys, _ := sdb.Scan(KV, nil, 100, true, "")
if len(mkeys) != len(skeys) {
return fmt.Errorf("keys number not equal %d != %d", len(mkeys), len(skeys))

101
server/cmd_scan.go Normal file
View File

@ -0,0 +1,101 @@
package server
import (
"fmt"
"github.com/siddontang/go/hack"
"github.com/siddontang/ledisdb/ledis"
"strconv"
"strings"
)
// XSCAN type cursor [MATCH match] [COUNT count] [ASC|DESC]
func xscanCommand(c *client) error {
args := c.args
if len(args) < 2 {
return ErrCmdParams
}
var dataType ledis.DataType
switch strings.ToUpper(hack.String(args[0])) {
case "KV":
dataType = ledis.KV
case "HASH":
dataType = ledis.HASH
case "LIST":
dataType = ledis.LIST
case "SET":
dataType = ledis.SET
case "ZSET":
dataType = ledis.ZSET
default:
return fmt.Errorf("invalid key type %s", args[0])
}
cursor := args[1]
args = args[2:]
match := ""
count := 10
desc := false
var err error
for i := 0; i < len(args); {
switch strings.ToUpper(hack.String(args[i])) {
case "MATCH":
if i+1 >= len(args) {
return ErrCmdParams
}
match = hack.String(args[i+1])
i = i + 2
case "COUNT":
if i+1 >= len(args) {
return ErrCmdParams
}
count, err = strconv.Atoi(hack.String(args[i+1]))
if err != nil {
return err
}
i = i + 2
case "ASC":
desc = false
i++
case "DESC":
desc = true
i++
default:
return fmt.Errorf("invalid argument %s", args[i])
}
}
var ay [][]byte
if !desc {
ay, err = c.db.Scan(dataType, cursor, count, false, match)
} else {
ay, err = c.db.RevScan(dataType, cursor, count, false, match)
}
if err != nil {
return err
}
data := make([]interface{}, 2)
if len(ay) < count {
data[0] = []byte("")
} else {
data[0] = ay[len(ay)-1]
}
data[1] = ay
c.resp.writeArray(data)
return nil
}
func init() {
register("xscan", xscanCommand)
}

32
server/scan_test.go → server/cmd_scan_test.go
View File

@ -53,8 +53,8 @@ func checkScanValues(t *testing.T, ay interface{}, values ...int) {
}
}
func checkScan(t *testing.T, c *ledis.Client, cmd string) {
if ay, err := ledis.Values(c.Do(cmd, "", "count", 5)); err != nil {
func checkScan(t *testing.T, c *ledis.Client, tp string) {
if ay, err := ledis.Values(c.Do("XSCAN", tp, "", "count", 5)); err != nil {
t.Fatal(err)
} else if len(ay) != 2 {
t.Fatal(len(ay))
@ -64,7 +64,7 @@ func checkScan(t *testing.T, c *ledis.Client, cmd string) {
checkScanValues(t, ay[1], 0, 1, 2, 3, 4)
}
if ay, err := ledis.Values(c.Do(cmd, "4", "count", 6)); err != nil {
if ay, err := ledis.Values(c.Do("XSCAN", tp, "4", "count", 6)); err != nil {
t.Fatal(err)
} else if len(ay) != 2 {
t.Fatal(len(ay))
@ -76,8 +76,8 @@ func checkScan(t *testing.T, c *ledis.Client, cmd string) {
}
func checkRevScan(t *testing.T, c *ledis.Client, cmd string) {
if ay, err := ledis.Values(c.Do(cmd, "", "count", 5)); err != nil {
func checkRevScan(t *testing.T, c *ledis.Client, tp string) {
if ay, err := ledis.Values(c.Do("XSCAN", tp, "", "count", 5, "DESC")); err != nil {
t.Fatal(err)
} else if len(ay) != 2 {
t.Fatal(len(ay))
@ -87,7 +87,7 @@ func checkRevScan(t *testing.T, c *ledis.Client, cmd string) {
checkScanValues(t, ay[1], 9, 8, 7, 6, 5)
}
if ay, err := ledis.Values(c.Do(cmd, "5", "count", 6)); err != nil {
if ay, err := ledis.Values(c.Do("XSCAN", tp, "5", "count", 6, "DESC")); err != nil {
t.Fatal(err)
} else if len(ay) != 2 {
t.Fatal(len(ay))
@ -106,8 +106,8 @@ func testKVScan(t *testing.T, c *ledis.Client) {
}
}
checkScan(t, c, "xscan")
checkRevScan(t, c, "xrevscan")
checkScan(t, c, "KV")
checkRevScan(t, c, "KV")
}
func testHashScan(t *testing.T, c *ledis.Client) {
@ -117,8 +117,8 @@ func testHashScan(t *testing.T, c *ledis.Client) {
}
}
checkScan(t, c, "xhscan")
checkRevScan(t, c, "xhrevscan")
checkScan(t, c, "HASH")
checkRevScan(t, c, "HASH")
}
func testListScan(t *testing.T, c *ledis.Client) {
@ -128,8 +128,8 @@ func testListScan(t *testing.T, c *ledis.Client) {
}
}
checkScan(t, c, "xlscan")
checkRevScan(t, c, "xlrevscan")
checkScan(t, c, "LIST")
checkRevScan(t, c, "LIST")
}
func testZSetScan(t *testing.T, c *ledis.Client) {
@ -139,8 +139,8 @@ func testZSetScan(t *testing.T, c *ledis.Client) {
}
}
checkScan(t, c, "zxscan")
checkRevScan(t, c, "zxrevscan")
checkScan(t, c, "ZSET")
checkRevScan(t, c, "ZSET")
}
func testSetScan(t *testing.T, c *ledis.Client) {
@ -150,6 +150,6 @@ func testSetScan(t *testing.T, c *ledis.Client) {
}
}
checkScan(t, c, "xsscan")
checkRevScan(t, c, "xsrevscan")
checkScan(t, c, "SET")
checkRevScan(t, c, "SET")
}

12
server/cmd_set.go
View File

@ -262,14 +262,6 @@ func spersistCommand(c *client) error {
return nil
}
func sxscanCommand(c *client) error {
return xscanGeneric(c, c.db.SScan)
}
func sxrevscanCommand(c *client) error {
return xscanGeneric(c, c.db.SRevScan)
}
func xsexistsCommand(c *client) error {
args := c.args
if len(args) != 1 {
@ -301,10 +293,6 @@ func init() {
register("sexpireat", sexpireAtCommand)
register("sttl", sttlCommand)
register("spersist", spersistCommand)
register("sxscan", sxscanCommand)
register("sxrevscan", sxrevscanCommand)
register("xsscan", sxscanCommand)
register("xsrevscan", sxrevscanCommand)
register("xsexists", xsexistsCommand)
}

12
server/cmd_zset.go
View File

@ -641,14 +641,6 @@ func zinterstoreCommand(c *client) error {
return err
}
func zxscanCommand(c *client) error {
return xscanGeneric(c, c.db.ZScan)
}
func zxrevscanCommand(c *client) error {
return xscanGeneric(c, c.db.ZRevScan)
}
func zparseMemberRange(minBuf []byte, maxBuf []byte) (min []byte, max []byte, rangeType uint8, err error) {
rangeType = store.RangeClose
if strings.ToLower(hack.String(minBuf)) == "-" {
@ -815,9 +807,5 @@ func init() {
register("zexpireat", zexpireAtCommand)
register("zttl", zttlCommand)
register("zpersist", zpersistCommand)
register("zxscan", zxscanCommand)
register("zxrevscan", zxrevscanCommand)
register("xzscan", zxscanCommand)
register("xzrevscan", zxrevscanCommand)
register("xzexists", xzexistsCommand)
}

12
server/const.go
View File

@ -2,6 +2,7 @@ package server
import (
"errors"
"github.com/siddontang/ledisdb/ledis"
)
var (
@ -26,12 +27,11 @@ var (
)
const (
KV = iota
LIST
HASH
SET
ZSET
BIT
KV ledis.DataType = ledis.KV
LIST = ledis.LIST
HASH = ledis.HASH
SET = ledis.SET
ZSET = ledis.ZSET
)
const (