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68 lines
1.2 KiB
68 lines
1.2 KiB
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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"github.com/syndtr/goleveldb/leveldb"
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"path"
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)
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type LDBDatabase struct {
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db *leveldb.DB
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}
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func NewLDBDatabase() (*LDBDatabase, error) {
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dbPath := path.Join(ethutil.Config.ExecPath, "database")
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// Open the db
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db, err := leveldb.OpenFile(dbPath, nil)
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if err != nil {
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return nil, err
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}
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database := &LDBDatabase{db: db}
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return database, nil
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}
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func (db *LDBDatabase) Put(key []byte, value []byte) {
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err := db.db.Put(key, value, nil)
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if err != nil {
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fmt.Println("Error put", err)
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}
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}
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func (db *LDBDatabase) Get(key []byte) ([]byte, error) {
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return db.db.Get(key, nil)
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}
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func (db *LDBDatabase) Delete(key []byte) error {
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return db.db.Delete(key, nil)
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}
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func (db *LDBDatabase) LastKnownTD() []byte {
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data, _ := db.db.Get([]byte("LastKnownTotalDifficulty"), nil)
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if len(data) == 0 {
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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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func (db *LDBDatabase) Close() {
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// Close the leveldb database
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db.db.Close()
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}
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func (db *LDBDatabase) Print() {
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iter := db.db.NewIterator(nil)
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for iter.Next() {
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key := iter.Key()
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value := iter.Value()
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fmt.Printf("%x(%d): ", key, len(key))
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node := ethutil.NewValueFromBytes(value)
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fmt.Printf("%v\n", node)
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}
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}
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