148 lines
3.9 KiB
Go
148 lines
3.9 KiB
Go
// VulcanizeDB
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// Copyright © 2022 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package leveldb_ethdb_rpc
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import (
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"errors"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/ethdb/leveldb"
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)
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var errNotSupported = errors.New("this operation is not supported")
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var _ ethdb.Database = &LevelDBBackend{}
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// NewLevelDBBackend creates a new levelDB RPC server backend
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func NewLevelDBBackend(conf *Config) (*LevelDBBackend, error) {
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db, err := leveldb.New(conf.FilePath, conf.Cache, conf.Handles, conf.Namespace, true)
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if err != nil {
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return nil, err
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}
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frdb, err := rawdb.NewDatabaseWithFreezer(db, conf.FreezerPath, conf.Namespace, true)
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if err != nil {
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db.Close()
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return nil, err
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}
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return &LevelDBBackend{
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ethDB: frdb,
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levelDB: db,
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}, nil
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}
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type LevelDBBackend struct {
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ethDB ethdb.Database
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levelDB *leveldb.Database
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}
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func (s *LevelDBBackend) Has(key []byte) (bool, error) {
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return s.ethDB.Has(key)
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}
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func (s *LevelDBBackend) Get(key []byte) ([]byte, error) {
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return s.ethDB.Get(key)
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}
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func (s *LevelDBBackend) HasAncient(kind string, number uint64) (bool, error) {
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return s.ethDB.HasAncient(kind, number)
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}
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func (s *LevelDBBackend) Ancient(kind string, number uint64) ([]byte, error) {
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return s.ethDB.Ancient(kind, number)
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}
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func (s *LevelDBBackend) AncientRange(kind string, start, count, maxBytes uint64) ([][]byte, error) {
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return s.ethDB.AncientRange(kind, start, count, maxBytes)
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}
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func (s *LevelDBBackend) ReadAncients(fn func(ethdb.AncientReaderOp) error) error {
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return s.ethDB.ReadAncients(fn)
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}
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func (s *LevelDBBackend) Ancients() (uint64, error) {
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return s.ethDB.Ancients()
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}
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func (s *LevelDBBackend) Tail() (uint64, error) {
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return s.ethDB.Tail()
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}
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func (s *LevelDBBackend) AncientSize(kind string) (uint64, error) {
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return s.ethDB.AncientSize(kind)
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}
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func (s *LevelDBBackend) Put(_ []byte, _ []byte) error {
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return errWriteNotAllowed
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}
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func (s *LevelDBBackend) Delete(_ []byte) error {
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return errWriteNotAllowed
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}
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func (s *LevelDBBackend) ModifyAncients(f func(ethdb.AncientWriteOp) error) (int64, error) {
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return 0, errWriteNotAllowed
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}
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func (s *LevelDBBackend) TruncateHead(n uint64) (uint64, error) {
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return 0, errWriteNotAllowed
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}
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func (s *LevelDBBackend) TruncateTail(n uint64) (uint64, error) {
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return 0, errWriteNotAllowed
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}
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func (s *LevelDBBackend) Sync() error {
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return errWriteNotAllowed
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}
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func (s *LevelDBBackend) NewBatch() ethdb.Batch {
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return nil
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}
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func (d *LevelDBBackend) NewBatchWithSize(size int) ethdb.Batch {
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return nil
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}
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func (s *LevelDBBackend) NewIterator(_ []byte, _ []byte) ethdb.Iterator {
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return nil
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}
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func (s *LevelDBBackend) Stat(property string) (string, error) {
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return s.ethDB.Stat(property)
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}
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func (s *LevelDBBackend) Compact(_ []byte, _ []byte) error {
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return errWriteNotAllowed
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}
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func (s *LevelDBBackend) Close() error {
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return errWriteNotAllowed
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}
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func (s *LevelDBBackend) MigrateTable(string, func([]byte) ([]byte, error)) error {
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return errWriteNotAllowed
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}
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func (s *LevelDBBackend) NewSnapshot() (ethdb.Snapshot, error) {
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return s.ethDB.NewSnapshot()
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}
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// AncientDatadir returns an error as we don't have a backing chain freezer.
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func (d *LevelDBBackend) AncientDatadir() (string, error) {
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return "", errNotSupported
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}
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