/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.drill.exec.store.sys;
import org.apache.drill.exec.exception.StoreException;
/**
* A factory used to create {@link PersistentStore store} instances.
*
*/
public interface PersistentStoreProvider extends AutoCloseable {
/**
* Gets or creates a {@link PersistentStore persistent store} for the given configuration.
*
* Note that implementors have liberty to cache previous {@link PersistentStore store} instances.
*
* @param config store configuration
* @param <V> store value type
*/
<V> PersistentStore<V> getOrCreateStore(PersistentStoreConfig<V> config) throws StoreException;
/**
* Sets up the provider.
*/
void start() throws Exception;
}