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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.state.gemini.engine.snapshot;

import org.apache.flink.runtime.state.gemini.engine.filecache.FileCache;

/**
 * A snapshot stage to sync data to file.
 */
public class SnapshotFileSyncStage implements SnapshotStage {

	private final SnapshotCompletableFuture completableFuture;

	private final FileCache fileCache;

	public SnapshotFileSyncStage(
		SnapshotCompletableFuture completableFuture,
		FileCache fileCache) {
		this.completableFuture = completableFuture;
		this.fileCache = fileCache;
	}

	@Override
	public void run() {
		completableFuture.incRunningTask();
		try {
			fileCache.sync();
		} catch (Exception e) {
			completableFuture.completeExceptionally(e);
		} finally {
			completableFuture.decRunningTask();
		}
	}

	@Override
	public boolean isAsync() {
		return false;
	}

	@Override
	public String toString() {
		return "SnapshotFileSyncStage";
	}
}




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