| /* |
| * 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.datasource |
| |
| import scala.util.Success |
| |
| import org.apache.spark.sql.SparkSession |
| import org.apache.spark.streaming.StreamingContext |
| |
| import org.apache.griffin.measure.Loggable |
| import org.apache.griffin.measure.configuration.dqdefinition.DataSourceParam |
| import org.apache.griffin.measure.datasource.cache.StreamingCacheClientFactory |
| import org.apache.griffin.measure.datasource.connector.{DataConnector, DataConnectorFactory} |
| |
| object DataSourceFactory extends Loggable { |
| |
| def getDataSources( |
| sparkSession: SparkSession, |
| ssc: StreamingContext, |
| dataSources: Seq[DataSourceParam]): Seq[DataSource] = { |
| dataSources.zipWithIndex.flatMap { pair => |
| val (param, index) = pair |
| getDataSource(sparkSession, ssc, param, index) |
| } |
| } |
| |
| private def getDataSource( |
| sparkSession: SparkSession, |
| ssc: StreamingContext, |
| dataSourceParam: DataSourceParam, |
| index: Int): Option[DataSource] = { |
| val name = dataSourceParam.getName |
| val connectorParams = dataSourceParam.getConnectors |
| val timestampStorage = TimestampStorage() |
| |
| // for streaming data cache |
| val streamingCacheClientOpt = StreamingCacheClientFactory.getClientOpt( |
| sparkSession, |
| dataSourceParam.getCheckpointOpt, |
| name, |
| index, |
| timestampStorage) |
| |
| val dataConnectors: Seq[DataConnector] = connectorParams.flatMap { connectorParam => |
| DataConnectorFactory.getDataConnector( |
| sparkSession, |
| ssc, |
| connectorParam, |
| timestampStorage, |
| streamingCacheClientOpt) match { |
| case Success(connector) => Some(connector) |
| case _ => None |
| } |
| } |
| |
| Some(DataSource(name, dataSourceParam, dataConnectors, streamingCacheClientOpt)) |
| } |
| |
| } |