| /* |
| * 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.drill.exec.store.hdf5; |
| |
| import org.apache.drill.common.logical.StoragePluginConfig; |
| import org.apache.drill.common.types.TypeProtos; |
| import org.apache.drill.common.types.Types; |
| import org.apache.drill.exec.physical.impl.scan.file.FileScanFramework; |
| import org.apache.drill.exec.physical.impl.scan.file.FileScanFramework.FileScanBuilder; |
| |
| import org.apache.drill.exec.physical.impl.scan.framework.ManagedReader; |
| import org.apache.drill.exec.server.DrillbitContext; |
| import org.apache.drill.exec.server.options.OptionManager; |
| import org.apache.drill.exec.store.dfs.easy.EasySubScan; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.drill.exec.store.dfs.easy.EasyFormatPlugin; |
| import org.apache.drill.exec.store.hdf5.HDF5BatchReader.HDF5ReaderConfig; |
| |
| |
| |
| public class HDF5FormatPlugin extends EasyFormatPlugin<HDF5FormatConfig> { |
| |
| public static final String DEFAULT_NAME = "hdf5"; |
| |
| |
| public HDF5FormatPlugin(String name, DrillbitContext context, |
| Configuration fsConf, |
| StoragePluginConfig storageConfig, |
| HDF5FormatConfig formatConfig) { |
| super(name, easyConfig(fsConf, formatConfig), context, storageConfig, formatConfig); |
| } |
| |
| private static EasyFormatConfig easyConfig(Configuration fsConf, HDF5FormatConfig pluginConfig) { |
| return EasyFormatConfig.builder() |
| .readable(true) |
| .writable(false) |
| .blockSplittable(false) |
| .compressible(true) |
| .supportsProjectPushdown(true) |
| .extensions(pluginConfig.getExtensions()) |
| .fsConf(fsConf) |
| .defaultName(DEFAULT_NAME) |
| .useEnhancedScan(true) |
| .supportsLimitPushdown(true) |
| .build(); |
| } |
| |
| @Override |
| protected FileScanBuilder frameworkBuilder(OptionManager options, EasySubScan scan) { |
| FileScanBuilder builder = new FileScanBuilder(); |
| |
| builder.setReaderFactory(new HDF5ReaderFactory(new HDF5BatchReader.HDF5ReaderConfig(this, formatConfig), scan.getMaxRecords())); |
| initScanBuilder(builder, scan); |
| builder.nullType(Types.optional(TypeProtos.MinorType.VARCHAR)); |
| return builder; |
| } |
| |
| public static class HDF5ReaderFactory extends FileScanFramework.FileReaderFactory { |
| private final HDF5ReaderConfig readerConfig; |
| private final int maxRecords; |
| |
| |
| HDF5ReaderFactory(HDF5ReaderConfig config, int maxRecords) { |
| readerConfig = config; |
| this.maxRecords = maxRecords; |
| } |
| |
| @Override |
| public ManagedReader<? extends FileScanFramework.FileSchemaNegotiator> newReader() { |
| return new HDF5BatchReader(readerConfig, maxRecords); |
| } |
| } |
| } |