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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.util;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;

/**
 * Closeable interface which allows to close a resource in a non
 * blocking fashion.
 */
public interface AutoCloseableAsync extends AutoCloseable {

	/**
	 * Trigger the closing of the resource and return the corresponding
	 * close future.
	 *
	 * @return Future which is completed once the resource has been closed
	 */
	CompletableFuture closeAsync();

	default void close() throws Exception {
		try {
			closeAsync().get();
		} catch (ExecutionException e) {
			throw new FlinkException("Could not close resource.", ExceptionUtils.stripExecutionException(e));
		}
	}

}