aboutsummaryrefslogtreecommitdiffstats
path: root/ethdb/memory_database.go
blob: f5d5faee73f2c25cbd55feaeef91a0e65024bb51 (plain) (blame)
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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
package ethdb

import (
    "fmt"

    "github.com/ethereum/go-ethereum/common"
)

/*
 * This is a test memory database. Do not use for any production it does not get persisted
 */
type MemDatabase struct {
    db map[string][]byte
}

func NewMemDatabase() (*MemDatabase, error) {
    db := &MemDatabase{db: make(map[string][]byte)}

    return db, nil
}

func (db *MemDatabase) Put(key []byte, value []byte) {
    db.db[string(key)] = value
}

func (db *MemDatabase) Set(key []byte, value []byte) {
    db.Put(key, value)
}

func (db *MemDatabase) Get(key []byte) ([]byte, error) {
    return db.db[string(key)], nil
}

/*
func (db *MemDatabase) GetKeys() []*common.Key {
    data, _ := db.Get([]byte("KeyRing"))

    return []*common.Key{common.NewKeyFromBytes(data)}
}
*/

func (db *MemDatabase) Delete(key []byte) error {
    delete(db.db, string(key))

    return nil
}

func (db *MemDatabase) Print() {
    for key, val := range db.db {
        fmt.Printf("%x(%d): ", key, len(key))
        node := common.NewValueFromBytes(val)
        fmt.Printf("%q\n", node.Val)
    }
}

func (db *MemDatabase) Close() {
}

func (db *MemDatabase) LastKnownTD() []byte {
    data, _ := db.Get([]byte("LastKnownTotalDifficulty"))

    if len(data) == 0 || data == nil {
        data = []byte{0x0}
    }

    return data
}

func (db *MemDatabase) Flush() error {
    return nil
}