55 lines
1012 B
Go
55 lines
1012 B
Go
package ethdb
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import (
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"fmt"
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"github.com/ethereum/eth-go/ethutil"
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)
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/*
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* This is a test memory database. Do not use for any production it does not get persisted
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*/
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type MemDatabase struct {
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db map[string][]byte
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}
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func NewMemDatabase() (*MemDatabase, error) {
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db := &MemDatabase{db: make(map[string][]byte)}
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return db, nil
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}
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func (db *MemDatabase) Put(key []byte, value []byte) {
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db.db[string(key)] = value
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}
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func (db *MemDatabase) Get(key []byte) ([]byte, error) {
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return db.db[string(key)], nil
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}
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func (db *MemDatabase) Delete(key []byte) error {
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delete(db.db, string(key))
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return nil
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}
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func (db *MemDatabase) Print() {
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for key, val := range db.db {
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fmt.Printf("%x(%d): ", key, len(key))
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node := ethutil.NewValueFromBytes(val)
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fmt.Printf("%q\n", node.Interface())
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}
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}
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func (db *MemDatabase) Close() {
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}
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func (db *MemDatabase) LastKnownTD() []byte {
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data, _ := db.Get([]byte("LastKnownTotalDifficulty"))
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if len(data) == 0 || data == nil {
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data = []byte{0x0}
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}
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return data
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}
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