/*
* 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 com.facebook.presto.raptor.backup;
import java.io.File;
import java.util.UUID;
public interface BackupStore
{
/**
* Backup a shard by copying it to the backup store.
*
* @param uuid shard UUID
* @param source the source file
*/
void backupShard(UUID uuid, File source);
/**
* Restore a shard by copying it from the backup store.
*
* @param uuid shard UUID
* @param target the destination file
*/
void restoreShard(UUID uuid, File target);
/**
* Delete shard from the backup store if it exists.
*
* @param uuid shard UUID
* @return {@code true} if the shard was deleted; {@code false} if it did not exist
*/
boolean deleteShard(UUID uuid);
/**
* Check if a shard exists in the backup store.
*
* @param uuid shard UUID
* @return if the shard exists
*/
boolean shardExists(UUID uuid);
}