cgivre commented on a change in pull request #2386: URL: https://github.com/apache/drill/pull/2386#discussion_r756112189
########## File path: contrib/format-sas/src/main/java/org/apache/drill/exec/store/sas/SasBatchReader.java ########## @@ -0,0 +1,454 @@ +/* + * 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.sas; + +import com.epam.parso.Column; +import com.epam.parso.SasFileProperties; +import com.epam.parso.SasFileReader; +import com.epam.parso.impl.SasFileReaderImpl; +import org.apache.drill.common.AutoCloseables; +import org.apache.drill.common.exceptions.CustomErrorContext; +import org.apache.drill.common.exceptions.UserException; +import org.apache.drill.common.types.TypeProtos.DataMode; +import org.apache.drill.common.types.TypeProtos.MinorType; +import org.apache.drill.exec.physical.impl.scan.file.FileScanFramework; +import org.apache.drill.exec.physical.impl.scan.framework.ManagedReader; +import org.apache.drill.exec.physical.resultSet.ResultSetLoader; +import org.apache.drill.exec.physical.resultSet.RowSetLoader; +import org.apache.drill.exec.record.MaterializedField; +import org.apache.drill.exec.record.metadata.ColumnMetadata; +import org.apache.drill.exec.record.metadata.MetadataUtils; +import org.apache.drill.exec.record.metadata.SchemaBuilder; +import org.apache.drill.exec.record.metadata.TupleMetadata; +import org.apache.drill.exec.vector.accessor.ScalarWriter; +import org.apache.hadoop.mapred.FileSplit; +import org.apache.parquet.Strings; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.io.InputStream; +import java.time.Instant; +import java.time.LocalDate; +import java.time.LocalTime; +import java.time.ZoneOffset; +import java.util.ArrayList; +import java.util.Date; +import java.util.List; + +public class SasBatchReader implements ManagedReader<FileScanFramework.FileSchemaNegotiator> { + private static final Logger logger = LoggerFactory.getLogger(SasBatchReader.class); + private final int maxRecords; + private final List<SasColumnWriter> writerList; + private FileSplit split; + private InputStream fsStream; + private SasFileReader sasFileReader; + private CustomErrorContext errorContext; + private RowSetLoader rowWriter; + private Object[] firstRow; + + + private String compressionMethod; + private String fileLabel; + private String fileType; + private String osName; + private String osType; + private String sasRelease; + private String sessionEncoding; + private String serverType; + private LocalDate dateCreated; + private LocalDate dateModified; + + private enum IMPLICIT_STRING_COLUMN { + COMPRESSION_METHOD("_compression_method"), + ENCODING("_encoding"), + FILE_LABEL("_file_label"), + FILE_TYPE("_file_type"), + OS_NAME("_os_name"), + OS_TYPE("_os_type"), + SAS_RELEASE("_sas_release"), + SESSION_ENCODING("_session_encoding"); + + private final String fieldName; + + IMPLICIT_STRING_COLUMN(String fieldName) { + this.fieldName = fieldName; + } + + public String getFieldName() { + return fieldName; + } + } + + private enum IMPLICIT_DATE_COLUMN { + CREATED_DATE("_date_created"), + MODIFIED_DATE("_date_modified"); + + private final String fieldName; + + IMPLICIT_DATE_COLUMN(String fieldName) { + this.fieldName = fieldName; + } + + public String getFieldName() { + return fieldName; + } + } + + public static class SasReaderConfig { + protected final SasFormatPlugin plugin; + public SasReaderConfig(SasFormatPlugin plugin) { + this.plugin = plugin; + } + } + + public SasBatchReader(int maxRecords) { + this.maxRecords = maxRecords; + writerList = new ArrayList<>(); + } + + @Override + public boolean open(FileScanFramework.FileSchemaNegotiator negotiator) { + split = negotiator.split(); + errorContext = negotiator.parentErrorContext(); + openFile(negotiator); + + TupleMetadata schema; + if (negotiator.hasProvidedSchema()) { + schema = negotiator.providedSchema(); + } else { + schema = buildSchema(); + } + schema = addImplicitColumnsToSchema(schema); + negotiator.tableSchema(schema, true); + + ResultSetLoader loader = negotiator.build(); + rowWriter = loader.writer(); + buildWriterList(schema); + + return true; + } + + private void openFile(FileScanFramework.FileSchemaNegotiator negotiator) { + try { + fsStream = negotiator.fileSystem().openPossiblyCompressedStream(split.getPath()); + sasFileReader = new SasFileReaderImpl(fsStream); + firstRow = sasFileReader.readNext(); + } catch (IOException e) { + throw UserException + .dataReadError(e) + .message("Unable to open SAS File %s", split.getPath()) + .addContext(e.getMessage()) + .addContext(errorContext) + .build(logger); + } + } + + private TupleMetadata buildSchema() { + SchemaBuilder builder = new SchemaBuilder(); + List<Column> columns = sasFileReader.getColumns(); + int counter = 0; + for (Column column : columns) { + String fieldName = column.getName(); + try { + MinorType type = getType(firstRow[counter].getClass().getSimpleName()); + if (type == MinorType.BIGINT && !column.getFormat().isEmpty()) { + logger.debug("Found possible time"); + type = MinorType.TIME; + } + builder.addNullable(fieldName, type); + } catch (Exception e) { + System.out.println("Error with column type: " + firstRow[counter].getClass().getSimpleName()); Review comment: Replaced with `UserException`. -- This is an automated message from the Apache Git Service. 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