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-rw-r--r--vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go127
1 files changed, 0 insertions, 127 deletions
diff --git a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go b/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go
deleted file mode 100644
index 76730fc9c..000000000
--- a/vendor/github.com/dexon-foundation/dexon-consensus-core/core/blockdb/level-db.go
+++ /dev/null
@@ -1,127 +0,0 @@
-// Copyright 2018 The dexon-consensus Authors
-// This file is part of the dexon-consensus library.
-//
-// The dexon-consensus library is free software: you can redistribute it
-// and/or modify it under the terms of the GNU Lesser General Public License as
-// published by the Free Software Foundation, either version 3 of the License,
-// or (at your option) any later version.
-//
-// The dexon-consensus library is distributed in the hope that it will be
-// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
-// General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the dexon-consensus library. If not, see
-// <http://www.gnu.org/licenses/>.
-
-package blockdb
-
-import (
- "encoding/json"
-
- "github.com/syndtr/goleveldb/leveldb"
-
- "github.com/dexon-foundation/dexon-consensus/common"
- "github.com/dexon-foundation/dexon-consensus/core/types"
-)
-
-// LevelDBBackedBlockDB is a leveldb backed BlockDB implementation.
-type LevelDBBackedBlockDB struct {
- db *leveldb.DB
-}
-
-// NewLevelDBBackedBlockDB initialize a leveldb-backed block database.
-func NewLevelDBBackedBlockDB(
- path string) (lvl *LevelDBBackedBlockDB, err error) {
-
- db, err := leveldb.OpenFile(path, nil)
- if err != nil {
- return
- }
- lvl = &LevelDBBackedBlockDB{db: db}
- return
-}
-
-// Close implement Closer interface, which would release allocated resource.
-func (lvl *LevelDBBackedBlockDB) Close() error {
- return lvl.db.Close()
-}
-
-// Has implements the Reader.Has method.
-func (lvl *LevelDBBackedBlockDB) Has(hash common.Hash) bool {
- exists, err := lvl.db.Has([]byte(hash[:]), nil)
- if err != nil {
- // TODO(missionliao): Modify the interface to return error.
- panic(err)
- }
- return exists
-}
-
-// Get implements the Reader.Get method.
-func (lvl *LevelDBBackedBlockDB) Get(
- hash common.Hash) (block types.Block, err error) {
-
- queried, err := lvl.db.Get([]byte(hash[:]), nil)
- if err != nil {
- if err == leveldb.ErrNotFound {
- err = ErrBlockDoesNotExist
- }
- return
- }
- err = json.Unmarshal(queried, &block)
- if err != nil {
- return
- }
- return
-}
-
-// Update implements the Writer.Update method.
-func (lvl *LevelDBBackedBlockDB) Update(block types.Block) (err error) {
- // NOTE: we didn't handle changes of block hash (and it
- // should not happen).
- marshaled, err := json.Marshal(&block)
- if err != nil {
- return
- }
-
- if !lvl.Has(block.Hash) {
- err = ErrBlockDoesNotExist
- return
- }
- err = lvl.db.Put(
- []byte(block.Hash[:]),
- marshaled,
- nil)
- if err != nil {
- return
- }
- return
-}
-
-// Put implements the Writer.Put method.
-func (lvl *LevelDBBackedBlockDB) Put(block types.Block) (err error) {
- marshaled, err := json.Marshal(&block)
- if err != nil {
- return
- }
- if lvl.Has(block.Hash) {
- err = ErrBlockExists
- return
- }
- err = lvl.db.Put(
- []byte(block.Hash[:]),
- marshaled,
- nil)
- if err != nil {
- return
- }
- return
-}
-
-// GetAll implements Reader.GetAll method, which allows callers
-// to retrieve all blocks in DB.
-func (lvl *LevelDBBackedBlockDB) GetAll() (BlockIterator, error) {
- // TODO (mission): Implement this part via goleveldb's iterator.
- return nil, ErrNotImplemented
-}