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/*
 * 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.flink.runtime.checkpoint;

import java.util.Arrays;

import static org.apache.flink.util.Preconditions.checkNotNull;

/**
 * Simple encapsulation of state generated by checkpoint coordinator.
 */
public class MasterState implements java.io.Serializable {

	private static final long serialVersionUID = 1L;

	private final String name;
	private final byte[] bytes;
	private final int version;

	public MasterState(String name, byte[] bytes, int version) {
		this.name = checkNotNull(name);
		this.bytes = checkNotNull(bytes);
		this.version = version;
	}

	// ------------------------------------------------------------------------

	public String name() {
		return name;
	}

	public byte[] bytes() {
		return bytes;
	}

	public int version() {
		return version;
	}

	// ------------------------------------------------------------------------

	@Override
	public String toString() {
		return "name: " + name + " ; version: " + version + " ; bytes: " + Arrays.toString(bytes);
	}
}




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