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