The great merge

ethdb/database.go

@@ -0,0 +1,64 @@
+package ethdb
+
+import (
+	"fmt"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/syndtr/goleveldb/leveldb"
+	"path"
+)
+
+type LDBDatabase struct {
+	db *leveldb.DB
+}
+
+func NewLDBDatabase() (*LDBDatabase, error) {
+	dbPath := path.Join(ethutil.Config.ExecPath, "database")
+
+	// Open the db
+	db, err := leveldb.OpenFile(dbPath, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	database := &LDBDatabase{db: db}
+
+	return database, nil
+}
+
+func (db *LDBDatabase) Put(key []byte, value []byte) {
+	err := db.db.Put(key, value, nil)
+	if err != nil {
+		fmt.Println("Error put", err)
+	}
+}
+
+func (db *LDBDatabase) Get(key []byte) ([]byte, error) {
+	return db.db.Get(key, nil)
+}
+
+func (db *LDBDatabase) LastKnownTD() []byte {
+	data, _ := db.db.Get([]byte("LastKnownTotalDifficulty"), nil)
+
+	if len(data) == 0 {
+		data = []byte{0x0}
+	}
+
+	return data
+}
+
+func (db *LDBDatabase) Close() {
+	// Close the leveldb database
+	db.db.Close()
+}
+
+func (db *LDBDatabase) Print() {
+	iter := db.db.NewIterator(nil)
+	for iter.Next() {
+		key := iter.Key()
+		value := iter.Value()
+
+		fmt.Printf("%x(%d): ", key, len(key))
+		node := ethutil.NewValueFromBytes(value)
+		fmt.Printf("%v\n", node)
+	}
+}