| /* |
| * 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.iceberg.orc; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.function.BiFunction; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.iceberg.Metrics; |
| import org.apache.iceberg.MetricsConfig; |
| import org.apache.iceberg.Schema; |
| import org.apache.iceberg.exceptions.RuntimeIOException; |
| import org.apache.iceberg.hadoop.HadoopOutputFile; |
| import org.apache.iceberg.io.FileAppender; |
| import org.apache.iceberg.io.OutputFile; |
| import org.apache.iceberg.relocated.com.google.common.base.Preconditions; |
| import org.apache.iceberg.relocated.com.google.common.collect.Lists; |
| import org.apache.orc.OrcFile; |
| import org.apache.orc.Reader; |
| import org.apache.orc.StripeInformation; |
| import org.apache.orc.TypeDescription; |
| import org.apache.orc.Writer; |
| import org.apache.orc.storage.ql.exec.vector.VectorizedRowBatch; |
| |
| /** |
| * Create a file appender for ORC. |
| */ |
| class OrcFileAppender<D> implements FileAppender<D> { |
| private final int batchSize; |
| private final OutputFile file; |
| private final Writer writer; |
| private final VectorizedRowBatch batch; |
| private final OrcRowWriter<D> valueWriter; |
| private boolean isClosed = false; |
| private final Configuration conf; |
| private final MetricsConfig metricsConfig; |
| |
| OrcFileAppender(Schema schema, OutputFile file, |
| BiFunction<Schema, TypeDescription, OrcRowWriter<?>> createWriterFunc, |
| Configuration conf, Map<String, byte[]> metadata, |
| int batchSize, MetricsConfig metricsConfig) { |
| this.conf = conf; |
| this.file = file; |
| this.batchSize = batchSize; |
| this.metricsConfig = metricsConfig; |
| |
| TypeDescription orcSchema = ORCSchemaUtil.convert(schema); |
| this.batch = orcSchema.createRowBatch(this.batchSize); |
| |
| OrcFile.WriterOptions options = OrcFile.writerOptions(conf).useUTCTimestamp(true); |
| if (file instanceof HadoopOutputFile) { |
| options.fileSystem(((HadoopOutputFile) file).getFileSystem()); |
| } |
| options.setSchema(orcSchema); |
| this.writer = newOrcWriter(file, options, metadata); |
| this.valueWriter = newOrcRowWriter(schema, orcSchema, createWriterFunc); |
| } |
| |
| @Override |
| public void add(D datum) { |
| try { |
| valueWriter.write(datum, batch); |
| if (batch.size == this.batchSize) { |
| writer.addRowBatch(batch); |
| batch.reset(); |
| } |
| } catch (IOException ioe) { |
| throw new RuntimeIOException(ioe, "Problem writing to ORC file %s", file.location()); |
| } |
| } |
| |
| @Override |
| public Metrics metrics() { |
| Preconditions.checkState(isClosed, |
| "Cannot return metrics while appending to an open file."); |
| return OrcMetrics.fromWriter(writer, metricsConfig); |
| } |
| |
| @Override |
| public long length() { |
| Preconditions.checkState(isClosed, |
| "Cannot return length while appending to an open file."); |
| return file.toInputFile().getLength(); |
| } |
| |
| @Override |
| public List<Long> splitOffsets() { |
| Preconditions.checkState(isClosed, "File is not yet closed"); |
| try (Reader reader = ORC.newFileReader(file.toInputFile(), conf)) { |
| List<StripeInformation> stripes = reader.getStripes(); |
| return Collections.unmodifiableList(Lists.transform(stripes, StripeInformation::getOffset)); |
| } catch (IOException e) { |
| throw new RuntimeIOException(e, "Can't close ORC reader %s", file.location()); |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| if (!isClosed) { |
| try { |
| if (batch.size > 0) { |
| writer.addRowBatch(batch); |
| batch.reset(); |
| } |
| } finally { |
| writer.close(); |
| this.isClosed = true; |
| } |
| } |
| } |
| |
| private static Writer newOrcWriter(OutputFile file, |
| OrcFile.WriterOptions options, Map<String, byte[]> metadata) { |
| final Path locPath = new Path(file.location()); |
| final Writer writer; |
| |
| try { |
| writer = OrcFile.createWriter(locPath, options); |
| } catch (IOException ioe) { |
| throw new RuntimeIOException(ioe, "Can't create file %s", locPath); |
| } |
| |
| metadata.forEach((key, value) -> writer.addUserMetadata(key, ByteBuffer.wrap(value))); |
| |
| return writer; |
| } |
| |
| @SuppressWarnings("unchecked") |
| private static <D> OrcRowWriter<D> newOrcRowWriter(Schema schema, |
| TypeDescription orcSchema, |
| BiFunction<Schema, TypeDescription, OrcRowWriter<?>> |
| createWriterFunc) { |
| return (OrcRowWriter<D>) createWriterFunc.apply(schema, orcSchema); |
| } |
| } |