/*
 * 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.ignite.raft.jraft.storage.snapshot;

import java.io.Closeable;
import org.apache.ignite.raft.jraft.Lifecycle;
import org.apache.ignite.raft.jraft.entity.RaftOutter.SnapshotMeta;

/**
 * Snapshot reader.
 */
public abstract class SnapshotReader extends Snapshot implements Closeable, Lifecycle<Void> {

    /**
     * Load the snapshot metadata.
     */
    public abstract SnapshotMeta load();

    /**
     * Generate uri for other peers to copy this snapshot. Return an empty string if some error has occur.
     */
    public abstract String generateURIForCopy();
}
