88 lines
2.1 KiB
Go
88 lines
2.1 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package goleveldb
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import (
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"fmt"
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"github.com/blevesearch/bleve/index/store"
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"github.com/blevesearch/bleve/registry"
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"github.com/syndtr/goleveldb/leveldb"
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"github.com/syndtr/goleveldb/leveldb/opt"
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"github.com/syndtr/goleveldb/leveldb/util"
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)
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const Name = "goleveldb"
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type Store struct {
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path string
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opts *opt.Options
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db *leveldb.DB
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mo store.MergeOperator
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defaultWriteOptions *opt.WriteOptions
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defaultReadOptions *opt.ReadOptions
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}
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func New(mo store.MergeOperator, config map[string]interface{}) (store.KVStore, error) {
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path, ok := config["path"].(string)
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if !ok {
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return nil, fmt.Errorf("must specify path")
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}
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opts, err := applyConfig(&opt.Options{}, config)
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if err != nil {
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return nil, err
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}
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db, err := leveldb.OpenFile(path, opts)
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if err != nil {
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return nil, err
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}
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rv := Store{
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path: path,
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opts: opts,
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db: db,
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mo: mo,
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defaultReadOptions: &opt.ReadOptions{},
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defaultWriteOptions: &opt.WriteOptions{},
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}
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rv.defaultWriteOptions.Sync = true
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return &rv, nil
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}
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func (ldbs *Store) Close() error {
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return ldbs.db.Close()
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}
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func (ldbs *Store) Reader() (store.KVReader, error) {
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snapshot, _ := ldbs.db.GetSnapshot()
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return &Reader{
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store: ldbs,
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snapshot: snapshot,
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}, nil
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}
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func (ldbs *Store) Writer() (store.KVWriter, error) {
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return &Writer{
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store: ldbs,
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}, nil
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}
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func (ldbs *Store) Compact() error {
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return ldbs.db.CompactRange(util.Range{nil, nil})
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}
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func init() {
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registry.RegisterKVStore(Name, New)
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}
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