111 lines
2.4 KiB
Go
111 lines
2.4 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 boltdb
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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/boltdb/bolt"
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)
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const Name = "boltdb"
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type BoltDBStore struct {
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path string
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bucket string
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db *bolt.DB
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}
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func Open(path string, bucket string) (*BoltDBStore, error) {
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rv := BoltDBStore{
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path: path,
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bucket: bucket,
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}
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var err error
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rv.db, err = bolt.Open(path, 0600, nil)
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if err != nil {
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return nil, err
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}
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err = rv.db.Update(func(tx *bolt.Tx) error {
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_, err := tx.CreateBucketIfNotExists([]byte(rv.bucket))
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return err
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})
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if err != nil {
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return nil, err
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}
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return &rv, nil
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}
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func (bs *BoltDBStore) Get(key []byte) ([]byte, error) {
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var rv []byte = nil
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err := bs.db.View(func(tx *bolt.Tx) error {
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rv = tx.Bucket([]byte(bs.bucket)).Get(key)
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return nil
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})
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return rv, err
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}
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func (bs *BoltDBStore) Set(key, val []byte) error {
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return bs.db.Update(func(tx *bolt.Tx) error {
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return tx.Bucket([]byte(bs.bucket)).Put(key, val)
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})
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}
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func (bs *BoltDBStore) Delete(key []byte) error {
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return bs.db.Update(func(tx *bolt.Tx) error {
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return tx.Bucket([]byte(bs.bucket)).Delete(key)
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})
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}
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func (bs *BoltDBStore) Commit() error {
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return nil
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}
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func (bs *BoltDBStore) Close() error {
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return bs.db.Close()
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}
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func (bs *BoltDBStore) Iterator(key []byte) store.KVIterator {
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rv := newBoltDBIterator(bs)
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rv.Seek(key)
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return rv
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}
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func (bs *BoltDBStore) NewBatch() store.KVBatch {
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return newBoltDBBatch(bs)
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}
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func StoreConstructor(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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bucket, ok := config["bucket"].(string)
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if !ok {
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bucket = "bleve"
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}
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return Open(path, bucket)
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}
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func init() {
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registry.RegisterKVStore(Name, StoreConstructor)
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}
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