52 lines
1.7 KiB
Go
52 lines
1.7 KiB
Go
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// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package registry
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import (
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"fmt"
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"github.com/blevesearch/bleve/index/store"
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)
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func RegisterKVStore(name string, constructor KVStoreConstructor) {
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_, exists := stores[name]
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if exists {
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panic(fmt.Errorf("attempted to register duplicate store named '%s'", name))
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}
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stores[name] = constructor
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}
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// KVStoreConstructor is used to build a KVStore of a specific type when
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// specificied by the index configuration. In addition to meeting the
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// store.KVStore interface, KVStores must also support this constructor.
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// Note that currently the values of config must
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// be able to be marshaled and unmarshaled using the encoding/json library (used
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// when reading/writing the index metadata file).
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type KVStoreConstructor func(mo store.MergeOperator, config map[string]interface{}) (store.KVStore, error)
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type KVStoreRegistry map[string]KVStoreConstructor
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func KVStoreConstructorByName(name string) KVStoreConstructor {
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return stores[name]
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}
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func KVStoreTypesAndInstances() ([]string, []string) {
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var types []string
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var instances []string
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for name := range stores {
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types = append(types, name)
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}
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return types, instances
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}
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