sql-streaming-sqs/src/main/scala/org/apache/spark/sql/streaming/sqs/SqsSourceProvider.scala

/*
 * 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.spark.sql.streaming.sqs

import org.apache.spark.internal.Logging
import org.apache.spark.sql.SQLContext
import org.apache.spark.sql.execution.streaming.Source
import org.apache.spark.sql.sources.{DataSourceRegister, StreamSourceProvider}
import org.apache.spark.sql.types.StructType

class SqsSourceProvider extends DataSourceRegister
  with StreamSourceProvider
  with Logging {

  override def shortName(): String = "s3-sqs"

  override def sourceSchema(sqlContext: SQLContext,
                            schema: Option[StructType],
                            providerName: String,
                            parameters: Map[String, String]): (String, StructType) = {

    require(schema.isDefined, "Sqs source doesn't support empty schema")
    (shortName(), schema.get)
  }

  override def createSource(sqlContext: SQLContext,
                            metadataPath: String,
                            schema: Option[StructType],
                            providerName: String,
                            parameters: Map[String, String]): Source = {

    new SqsSource(
      sqlContext.sparkSession,
      metadataPath,
      parameters,
      schema.get)
  }
}