| /* |
| * 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.googlesheets; |
| |
| import org.apache.drill.common.exceptions.ExecutionSetupException; |
| import org.apache.drill.common.exceptions.UserException; |
| import org.apache.drill.common.types.TypeProtos.MinorType; |
| import org.apache.drill.common.types.Types; |
| import org.apache.drill.exec.ops.ExecutorFragmentContext; |
| import org.apache.drill.exec.physical.impl.BatchCreator; |
| import org.apache.drill.exec.physical.impl.scan.framework.ManagedReader; |
| import org.apache.drill.exec.physical.impl.scan.framework.ManagedScanFramework; |
| import org.apache.drill.exec.physical.impl.scan.framework.ManagedScanFramework.ReaderFactory; |
| import org.apache.drill.exec.physical.impl.scan.framework.ManagedScanFramework.ScanFrameworkBuilder; |
| import org.apache.drill.exec.physical.impl.scan.framework.SchemaNegotiator; |
| import org.apache.drill.exec.record.CloseableRecordBatch; |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.server.options.OptionManager; |
| import org.apache.drill.exec.store.StoragePluginRegistry; |
| import org.apache.drill.exec.store.StoragePluginRegistry.PluginException; |
| import org.apache.drill.shaded.guava.com.google.common.base.Preconditions; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| |
| public class GoogleSheetsScanBatchCreator implements BatchCreator<GoogleSheetsSubScan> { |
| |
| private static final Logger logger = LoggerFactory.getLogger(GoogleSheetsScanBatchCreator.class); |
| |
| @Override |
| public CloseableRecordBatch getBatch(ExecutorFragmentContext context, |
| GoogleSheetsSubScan subScan, List<RecordBatch> children) throws ExecutionSetupException { |
| Preconditions.checkArgument(children.isEmpty()); |
| |
| StoragePluginRegistry registry = context.getDrillbitContext().getStorage(); |
| GoogleSheetsStoragePlugin plugin; |
| try { |
| plugin = (GoogleSheetsStoragePlugin) registry.getPlugin(subScan.getScanSpec().getPluginName()); |
| } catch (PluginException e) { |
| throw UserException.internalError(e) |
| .message("Unable to locate GoogleSheets storage plugin") |
| .build(logger); |
| } |
| |
| try { |
| ScanFrameworkBuilder builder = createBuilder(context.getOptions(), subScan, plugin); |
| return builder.buildScanOperator(context, subScan); |
| } catch (UserException e) { |
| // Rethrow user exceptions directly |
| throw e; |
| } catch (Throwable e) { |
| // Wrap all others |
| throw new ExecutionSetupException(e); |
| } |
| } |
| |
| private ScanFrameworkBuilder createBuilder(OptionManager options, GoogleSheetsSubScan subScan, GoogleSheetsStoragePlugin plugin) { |
| GoogleSheetsStoragePluginConfig config = subScan.getConfig(); |
| ScanFrameworkBuilder builder = new ScanFrameworkBuilder(); |
| builder.projection(subScan.getColumns()); |
| builder.providedSchema(subScan.getSchema()); |
| builder.setUserName(subScan.getUserName()); |
| |
| // Reader |
| ReaderFactory readerFactory = new GoogleSheetsReaderFactory(config, subScan, plugin); |
| builder.setReaderFactory(readerFactory); |
| builder.nullType(Types.optional(MinorType.VARCHAR)); |
| return builder; |
| } |
| |
| private static class GoogleSheetsReaderFactory implements ReaderFactory { |
| |
| private final GoogleSheetsStoragePluginConfig config; |
| private final GoogleSheetsSubScan subScan; |
| private final GoogleSheetsStoragePlugin plugin; |
| private int count; |
| |
| public GoogleSheetsReaderFactory(GoogleSheetsStoragePluginConfig config, GoogleSheetsSubScan subScan, GoogleSheetsStoragePlugin plugin) { |
| this.config = config; |
| this.subScan = subScan; |
| this.plugin = plugin; |
| } |
| |
| @Override |
| public void bind(ManagedScanFramework framework) { |
| } |
| |
| @Override |
| public ManagedReader<SchemaNegotiator> next() { |
| // Only a single scan (in a single thread) |
| if (count++ == 0) { |
| return new GoogleSheetsBatchReader(config, subScan, plugin); |
| } |
| return null; |
| } |
| } |
| } |