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