paul-rogers commented on a change in pull request #1114: Drill-6104: Added Logfile Reader URL: https://github.com/apache/drill/pull/1114#discussion_r200863982
########## File path: exec/java-exec/src/main/java/org/apache/drill/exec/store/log/LogRecordReader.java ########## @@ -0,0 +1,623 @@ +/* + * 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.log; + +import com.google.common.base.Charsets; +import org.apache.drill.common.exceptions.UserException; +import org.apache.drill.common.expression.SchemaPath; +import org.apache.drill.common.types.TypeProtos.MinorType; +import org.apache.drill.common.types.Types; +import org.apache.drill.exec.exception.SchemaChangeException; +import org.apache.drill.exec.ops.FragmentContext; +import org.apache.drill.exec.ops.OperatorContext; +import org.apache.drill.exec.physical.impl.OutputMutator; +import org.apache.drill.exec.record.MaterializedField; +import org.apache.drill.exec.store.AbstractRecordReader; +import org.apache.drill.exec.store.dfs.DrillFileSystem; +import org.apache.drill.exec.store.dfs.easy.FileWork; +import org.apache.drill.exec.vector.NullableDateVector; +import org.apache.drill.exec.vector.NullableTimeVector; +import org.apache.drill.exec.vector.NullableTimeStampVector; +import org.apache.drill.exec.vector.NullableIntVector; +import org.apache.drill.exec.vector.NullableVarCharVector; +import org.apache.drill.exec.vector.NullableFloat8Vector; +import org.apache.drill.exec.vector.BaseValueVector; +import org.apache.hadoop.fs.Path; + +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Date; +import java.util.List; +import java.util.regex.Matcher; +import java.util.regex.Pattern; +import java.util.regex.PatternSyntaxException; + +public class LogRecordReader extends AbstractRecordReader { + + private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(LogRecordReader.class); + + private abstract static class ColumnDefn { + public final String name; + public final int index; + public final String format; + + public ColumnDefn(String name, int index) { + this.name = name; + this.index = index; + this.format = ""; + } + + public ColumnDefn(String name, int index, String format) { + this.name = name; + this.index = index; + this.format = format; + } + + public abstract void define(OutputMutator outputMutator) throws SchemaChangeException; + + public abstract void load(int rowIndex, String value); + + @Override + //For testing + public String toString() { + return "Name: " + name + ", Index: " + index; + } + } + + private static class VarCharDefn extends ColumnDefn { + + private NullableVarCharVector.Mutator mutator; + + public VarCharDefn(String name, int index) { + super(name, index); + } + + @Override + public void define(OutputMutator outputMutator) throws SchemaChangeException { + MaterializedField field = MaterializedField.create(name, + Types.optional(MinorType.VARCHAR)); + mutator = outputMutator.addField(field, NullableVarCharVector.class).getMutator(); + } + + @Override + public void load(int rowIndex, String value) { + mutator.set(rowIndex, value.getBytes()); + } + } + + private static class IntDefn extends ColumnDefn { + + private NullableIntVector.Mutator mutator; + + public IntDefn(String name, int index) { + super(name, index); + } + + @Override + public void define(OutputMutator outputMutator) throws SchemaChangeException { + MaterializedField field = MaterializedField.create(name, + Types.optional(MinorType.INT)); + mutator = outputMutator.addField(field, NullableIntVector.class).getMutator(); + } + + @Override + public void load(int rowIndex, String value) { + try { + mutator.set(rowIndex, Integer.parseInt(value)); + } catch (NumberFormatException e) { + throw UserException + .dataReadError(e) + .addContext("Failed to parse an INT field") + .addContext("Column", name) + .addContext("Position", index) + .addContext("Value", value) + .build(logger); + } + } + } + + private static class DoubleDefn extends ColumnDefn { + + private NullableFloat8Vector.Mutator mutator; + + public DoubleDefn(String name, int index) { + super(name, index); + } + + @Override + public void define(OutputMutator outputMutator) throws SchemaChangeException { + MaterializedField field = MaterializedField.create(name, + Types.optional(MinorType.FLOAT8)); + mutator = outputMutator.addField(field, NullableFloat8Vector.class).getMutator(); + } + + @Override + public void load(int rowIndex, String value) { + try { + mutator.set(rowIndex, Double.parseDouble(value)); + } catch (NumberFormatException e) { + throw UserException + .dataReadError(e) + .addContext("Failed to parse an FLOAT field") + .addContext("Column", name) + .addContext("Position", index) + .addContext("Value", value) + .build(logger); + } + } + } + + private static class DateDefn extends ColumnDefn { + + private NullableDateVector.Mutator mutator; + private SimpleDateFormat df; + + public DateDefn(String name, int index, String dateFormat) { + super(name, index, dateFormat); + df = getValidDateObject(dateFormat); + } + + private SimpleDateFormat getValidDateObject(String d) { + SimpleDateFormat tempDateFormat; + if (d != null && !d.isEmpty()) { + tempDateFormat = new SimpleDateFormat(d); Review comment: Any resolution for the above? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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