/*
 * 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);
}
