ef59abe4c9
by default we now use the pure go boltdb kv store it is less tested at this point but appears to work test pass, and moves us closer to the goal of being able to just "go get" bleve
101 lines
2.4 KiB
Go
101 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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// +build leveldb full
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package leveldb
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import (
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"fmt"
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"github.com/couchbaselabs/bleve/index/store"
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"github.com/couchbaselabs/bleve/registry"
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"github.com/jmhodges/levigo"
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)
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const Name = "leveldb"
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type LevelDBStore struct {
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path string
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opts *levigo.Options
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db *levigo.DB
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}
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func Open(path string, createIfMissing bool, errorIfExists bool) (*LevelDBStore, error) {
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rv := LevelDBStore{
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path: path,
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}
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opts := levigo.NewOptions()
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opts.SetCreateIfMissing(createIfMissing)
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opts.SetErrorIfExists(errorIfExists)
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rv.opts = opts
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var err error
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rv.db, err = levigo.Open(rv.path, rv.opts)
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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 (ldbs *LevelDBStore) Get(key []byte) ([]byte, error) {
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return ldbs.db.Get(defaultReadOptions(), key)
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}
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func (ldbs *LevelDBStore) Set(key, val []byte) error {
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return ldbs.db.Put(defaultWriteOptions(), key, val)
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}
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func (ldbs *LevelDBStore) Delete(key []byte) error {
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return ldbs.db.Delete(defaultWriteOptions(), key)
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}
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func (ldbs *LevelDBStore) Commit() error {
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return nil
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}
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func (ldbs *LevelDBStore) Close() error {
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ldbs.db.Close()
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return nil
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}
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func (ldbs *LevelDBStore) Iterator(key []byte) store.KVIterator {
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rv := newLevelDBIterator(ldbs)
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rv.Seek(key)
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return rv
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}
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func (ldbs *LevelDBStore) NewBatch() store.KVBatch {
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return newLevelDBBatch(ldbs)
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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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createIfMissing := false
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cim, ok := config["create_if_missing"].(bool)
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if ok {
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createIfMissing = cim
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}
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errorIfExists := true
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eie, ok := config["error_if_exists"].(bool)
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if ok {
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errorIfExists = eie
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}
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return Open(path, createIfMissing, errorIfExists)
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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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