| /* |
| 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.griffin.measure.step.builder.dsl.transform |
| |
| import org.apache.griffin.measure.configuration.dqdefinition.RuleParam |
| import org.apache.griffin.measure.configuration.enums._ |
| import org.apache.griffin.measure.context.DQContext |
| import org.apache.griffin.measure.step.DQStep |
| import org.apache.griffin.measure.step.builder.ConstantColumns |
| import org.apache.griffin.measure.step.builder.dsl.expr._ |
| import org.apache.griffin.measure.step.builder.dsl.transform.analyzer.UniquenessAnalyzer |
| import org.apache.griffin.measure.step.transform.SparkSqlTransformStep |
| import org.apache.griffin.measure.step.write.{MetricWriteStep, RecordWriteStep} |
| import org.apache.griffin.measure.utils.ParamUtil._ |
| |
| /** |
| * generate uniqueness dq steps |
| */ |
| case class UniquenessExpr2DQSteps(context: DQContext, |
| expr: Expr, |
| ruleParam: RuleParam |
| ) extends Expr2DQSteps { |
| |
| private object UniquenessKeys { |
| val _source = "source" |
| val _target = "target" |
| val _unique = "unique" |
| val _total = "total" |
| val _dup = "dup" |
| val _num = "num" |
| |
| val _duplicationArray = "duplication.array" |
| } |
| import UniquenessKeys._ |
| |
| def getDQSteps(): Seq[DQStep] = { |
| val details = ruleParam.getDetails |
| val uniquenessExpr = expr.asInstanceOf[UniquenessClause] |
| |
| val sourceName = details.getString(_source, context.getDataSourceName(0)) |
| val targetName = details.getString(_target, context.getDataSourceName(1)) |
| val analyzer = UniquenessAnalyzer(uniquenessExpr, sourceName, targetName) |
| |
| val procType = context.procType |
| val timestamp = context.contextId.timestamp |
| |
| if (!context.runTimeTableRegister.existsTable(sourceName)) { |
| warn(s"[${timestamp}] data source ${sourceName} not exists") |
| Nil |
| } else if (!context.runTimeTableRegister.existsTable(targetName)) { |
| warn(s"[${timestamp}] data source ${targetName} not exists") |
| Nil |
| } else { |
| val selItemsClause = analyzer.selectionPairs.map { pair => |
| val (expr, alias) = pair |
| s"${expr.desc} AS `${alias}`" |
| }.mkString(", ") |
| val aliases = analyzer.selectionPairs.map(_._2) |
| |
| val selClause = procType match { |
| case BatchProcessType => selItemsClause |
| case StreamingProcessType => s"`${ConstantColumns.tmst}`, ${selItemsClause}" |
| } |
| val selAliases = procType match { |
| case BatchProcessType => aliases |
| case StreamingProcessType => ConstantColumns.tmst +: aliases |
| } |
| |
| // 1. source distinct mapping |
| val sourceTableName = "__source" |
| val sourceSql = s"SELECT DISTINCT ${selClause} FROM ${sourceName}" |
| val sourceTransStep = SparkSqlTransformStep(sourceTableName, sourceSql, emptyMap) |
| |
| // 2. target mapping |
| val targetTableName = "__target" |
| val targetSql = s"SELECT ${selClause} FROM ${targetName}" |
| val targetTransStep = SparkSqlTransformStep(targetTableName, targetSql, emptyMap) |
| |
| // 3. joined |
| val joinedTableName = "__joined" |
| val joinedSelClause = selAliases.map { alias => |
| s"`${sourceTableName}`.`${alias}` AS `${alias}`" |
| }.mkString(", ") |
| val onClause = aliases.map { alias => |
| s"coalesce(`${sourceTableName}`.`${alias}`, '') = coalesce(`${targetTableName}`.`${alias}`, '')" |
| }.mkString(" AND ") |
| val joinedSql = { |
| s"SELECT ${joinedSelClause} FROM `${targetTableName}` RIGHT JOIN `${sourceTableName}` ON ${onClause}" |
| } |
| val joinedTransStep = SparkSqlTransformStep(joinedTableName, joinedSql, emptyMap) |
| joinedTransStep.parentSteps += sourceTransStep |
| joinedTransStep.parentSteps += targetTransStep |
| |
| // 4. group |
| val groupTableName = "__group" |
| val groupSelClause = selAliases.map { alias => |
| s"`${alias}`" |
| }.mkString(", ") |
| val dupColName = details.getStringOrKey(_dup) |
| val groupSql = { |
| s"SELECT ${groupSelClause}, (COUNT(*) - 1) AS `${dupColName}` " + |
| s"FROM `${joinedTableName}` GROUP BY ${groupSelClause}" |
| } |
| val groupTransStep = SparkSqlTransformStep(groupTableName, groupSql, emptyMap, None, true) |
| groupTransStep.parentSteps += joinedTransStep |
| |
| // 5. total metric |
| val totalTableName = "__totalMetric" |
| val totalColName = details.getStringOrKey(_total) |
| val totalSql = procType match { |
| case BatchProcessType => s"SELECT COUNT(*) AS `${totalColName}` FROM `${sourceName}`" |
| case StreamingProcessType => |
| s""" |
| |SELECT `${ConstantColumns.tmst}`, COUNT(*) AS `${totalColName}` |
| |FROM `${sourceName}` GROUP BY `${ConstantColumns.tmst}` |
| """.stripMargin |
| } |
| val totalMetricWriteStep = MetricWriteStep(totalColName, totalTableName, EntriesFlattenType) |
| val totalTransStep = |
| SparkSqlTransformStep(totalTableName, totalSql, emptyMap, Some(totalMetricWriteStep)) |
| |
| // 6. unique record |
| val uniqueRecordTableName = "__uniqueRecord" |
| val uniqueRecordSql = { |
| s"SELECT * FROM `${groupTableName}` WHERE `${dupColName}` = 0" |
| } |
| val uniqueRecordTransStep = |
| SparkSqlTransformStep(uniqueRecordTableName, uniqueRecordSql, emptyMap) |
| uniqueRecordTransStep.parentSteps += groupTransStep |
| |
| // 7. unique metric |
| val uniqueTableName = "__uniqueMetric" |
| val uniqueColName = details.getStringOrKey(_unique) |
| val uniqueSql = procType match { |
| case BatchProcessType => |
| s"SELECT COUNT(*) AS `${uniqueColName}` FROM `${uniqueRecordTableName}`" |
| case StreamingProcessType => |
| s""" |
| |SELECT `${ConstantColumns.tmst}`, COUNT(*) AS `${uniqueColName}` |
| |FROM `${uniqueRecordTableName}` GROUP BY `${ConstantColumns.tmst}` |
| """.stripMargin |
| } |
| val uniqueMetricWriteStep = |
| MetricWriteStep(uniqueColName, uniqueTableName, EntriesFlattenType) |
| val uniqueTransStep = |
| SparkSqlTransformStep(uniqueTableName, uniqueSql, emptyMap, Some(uniqueMetricWriteStep)) |
| uniqueTransStep.parentSteps += uniqueRecordTransStep |
| |
| val transSteps1 = totalTransStep :: uniqueTransStep :: Nil |
| |
| val duplicationArrayName = details.getString(_duplicationArray, "") |
| val transSteps2 = if (duplicationArrayName.nonEmpty) { |
| // 8. duplicate record |
| val dupRecordTableName = "__dupRecords" |
| val dupRecordSql = { |
| s"SELECT * FROM `${groupTableName}` WHERE `${dupColName}` > 0" |
| } |
| |
| val dupRecordWriteStep = { |
| val rwName = |
| ruleParam.getOutputOpt(RecordOutputType).flatMap(_.getNameOpt) |
| .getOrElse(dupRecordTableName) |
| |
| RecordWriteStep(rwName, dupRecordTableName) |
| } |
| val dupRecordTransStep = |
| SparkSqlTransformStep(dupRecordTableName, dupRecordSql, emptyMap, Some(dupRecordWriteStep), true) |
| |
| // 9. duplicate metric |
| val dupMetricTableName = "__dupMetric" |
| val numColName = details.getStringOrKey(_num) |
| val dupMetricSelClause = procType match { |
| case BatchProcessType => s"`${dupColName}`, COUNT(*) AS `${numColName}`" |
| |
| case StreamingProcessType => |
| s"`${ConstantColumns.tmst}`, `${dupColName}`, COUNT(*) AS `${numColName}`" |
| } |
| val dupMetricGroupbyClause = procType match { |
| case BatchProcessType => s"`${dupColName}`" |
| case StreamingProcessType => s"`${ConstantColumns.tmst}`, `${dupColName}`" |
| } |
| val dupMetricSql = { |
| s""" |
| |SELECT ${dupMetricSelClause} FROM `${dupRecordTableName}` |
| |GROUP BY ${dupMetricGroupbyClause} |
| """.stripMargin |
| } |
| val dupMetricWriteStep = { |
| MetricWriteStep(duplicationArrayName, dupMetricTableName, ArrayFlattenType) |
| } |
| val dupMetricTransStep = |
| SparkSqlTransformStep(dupMetricTableName, |
| dupMetricSql, |
| emptyMap, |
| Some(dupMetricWriteStep) |
| ) |
| dupMetricTransStep.parentSteps += dupRecordTransStep |
| |
| dupMetricTransStep :: Nil |
| } else Nil |
| |
| // full steps |
| transSteps1 ++ transSteps2 |
| } |
| } |
| |
| } |
