| /* |
| * 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.statefun.flink.core.feedback; |
| |
| import java.io.OutputStream; |
| import java.util.Objects; |
| import java.util.SortedMap; |
| import java.util.TreeMap; |
| import java.util.function.Supplier; |
| import org.apache.flink.statefun.flink.core.logger.FeedbackLogger; |
| import org.apache.flink.util.IOUtils; |
| |
| final class Checkpoints<T> implements AutoCloseable { |
| private final Supplier<? extends FeedbackLogger<T>> feedbackLoggerFactory; |
| private final TreeMap<Long, FeedbackLogger<T>> uncompletedCheckpoints = new TreeMap<>(); |
| |
| Checkpoints(Supplier<? extends FeedbackLogger<T>> feedbackLoggerFactory) { |
| this.feedbackLoggerFactory = Objects.requireNonNull(feedbackLoggerFactory); |
| } |
| |
| public void startLogging(long checkpointId, OutputStream outputStream) { |
| FeedbackLogger<T> logger = feedbackLoggerFactory.get(); |
| logger.startLogging(outputStream); |
| uncompletedCheckpoints.put(checkpointId, logger); |
| } |
| |
| public void append(T element) { |
| for (FeedbackLogger<T> logger : uncompletedCheckpoints.values()) { |
| logger.append(element); |
| } |
| } |
| |
| public void commitCheckpointsUntil(long checkpointId) { |
| SortedMap<Long, FeedbackLogger<T>> completedCheckpoints = |
| uncompletedCheckpoints.headMap(checkpointId, true); |
| completedCheckpoints.values().forEach(FeedbackLogger::commit); |
| completedCheckpoints.clear(); |
| } |
| |
| @Override |
| public void close() { |
| IOUtils.closeAllQuietly(uncompletedCheckpoints.values()); |
| uncompletedCheckpoints.clear(); |
| } |
| } |