-
Notifications
You must be signed in to change notification settings - Fork 30
/
key_object.go
44 lines (37 loc) · 1.18 KB
/
key_object.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
package vs
import (
"github.com/chrislusf/vasto/util"
)
// KeyObject locates a entry, usually by a []byte as a key.
// Additionally, there could be multiple store partitions. A partition key or partition hash can be used to locate
// the store partitions. Prefix queries can be fairly fast if the entries shares the same partition.
type KeyObject struct {
key []byte
partitionHash uint64
}
// Key creates a key object
func Key(key []byte) *KeyObject {
return &KeyObject{
key: key,
partitionHash: util.Hash(key),
}
}
// SetPartitionKey sets the partition key, which hash value is used to route the key
// to the right partition.
func (k *KeyObject) SetPartitionKey(partitionKey []byte) *KeyObject {
k.partitionHash = util.Hash(partitionKey)
return k
}
// SetPartitionHash sets the partition hash to route the key to the right partition.
func (k *KeyObject) SetPartitionHash(partitionHash uint64) *KeyObject {
k.partitionHash = partitionHash
return k
}
// GetKey returns the key bytes
func (k *KeyObject) GetKey() []byte {
return k.key
}
// GetPartitionHash returns the partition hash value
func (k *KeyObject) GetPartitionHash() uint64 {
return k.partitionHash
}