| /* |
| * 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.fs.s3.common.writer; |
| |
| import org.apache.flink.core.fs.RecoverableFsDataOutputStream; |
| import org.apache.flink.core.fs.RecoverableWriter; |
| |
| import com.amazonaws.services.s3.model.ObjectMetadata; |
| import com.amazonaws.services.s3.model.PartETag; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import static org.apache.flink.util.Preconditions.checkNotNull; |
| |
| /** |
| * Data object to commit an S3 MultiPartUpload. |
| */ |
| public final class S3Committer implements RecoverableFsDataOutputStream.Committer { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(S3Committer.class); |
| |
| private final S3AccessHelper s3AccessHelper; |
| |
| private final String uploadId; |
| |
| private final String objectName; |
| |
| private final List<PartETag> parts; |
| |
| private final long totalLength; |
| |
| S3Committer(S3AccessHelper s3AccessHelper, String objectName, String uploadId, List<PartETag> parts, long totalLength) { |
| this.s3AccessHelper = checkNotNull(s3AccessHelper); |
| this.objectName = checkNotNull(objectName); |
| this.uploadId = checkNotNull(uploadId); |
| this.parts = checkNotNull(parts); |
| this.totalLength = totalLength; |
| } |
| |
| @Override |
| public void commit() throws IOException { |
| if (totalLength > 0L) { |
| LOG.info("Committing {} with MPU ID {}", objectName, uploadId); |
| |
| final AtomicInteger errorCount = new AtomicInteger(); |
| s3AccessHelper.commitMultiPartUpload(objectName, uploadId, parts, totalLength, errorCount); |
| |
| if (errorCount.get() == 0) { |
| LOG.debug("Successfully committed {} with MPU ID {}", objectName, uploadId); |
| } else { |
| LOG.debug("Successfully committed {} with MPU ID {} after {} retries.", objectName, uploadId, errorCount.get()); |
| } |
| } else { |
| LOG.debug("No data to commit for file: {}", objectName); |
| } |
| } |
| |
| @Override |
| public void commitAfterRecovery() throws IOException { |
| if (totalLength > 0L) { |
| LOG.info("Trying to commit after recovery {} with MPU ID {}", objectName, uploadId); |
| |
| try { |
| s3AccessHelper.commitMultiPartUpload(objectName, uploadId, parts, totalLength, new AtomicInteger()); |
| } catch (IOException e) { |
| LOG.info("Failed to commit after recovery {} with MPU ID {}. " + |
| "Checking if file was committed before...", objectName, uploadId); |
| LOG.trace("Exception when committing:", e); |
| |
| try { |
| ObjectMetadata metadata = s3AccessHelper.getObjectMetadata(objectName); |
| if (totalLength != metadata.getContentLength()) { |
| String message = String.format("Inconsistent result for object %s: conflicting lengths. " + |
| "Recovered committer for upload %s indicates %s bytes, present object is %s bytes", |
| objectName, uploadId, totalLength, metadata.getContentLength()); |
| LOG.warn(message); |
| throw new IOException(message, e); |
| } |
| } catch (FileNotFoundException fnf) { |
| LOG.warn("Object {} not existing after failed recovery commit with MPU ID {}", objectName, uploadId); |
| throw new IOException(String.format("Recovering commit failed for object %s. " + |
| "Object does not exist and MultiPart Upload %s is not valid.", objectName, uploadId), e); |
| } |
| } |
| } else { |
| LOG.debug("No data to commit for file: {}", objectName); |
| } |
| } |
| |
| @Override |
| public RecoverableWriter.CommitRecoverable getRecoverable() { |
| return new S3Recoverable(objectName, uploadId, parts, totalLength); |
| } |
| } |