org.apache.spark.aliyun.odps.datasource.DefaultSource.scala Maven / Gradle / Ivy
/**
* 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.aliyun.odps.datasource
import org.apache.spark.sql.{DataFrame, SaveMode, SQLContext}
import org.apache.spark.sql.sources.{CreatableRelationProvider, BaseRelation, DataSourceRegister, RelationProvider}
class DefaultSource extends RelationProvider
with CreatableRelationProvider
with DataSourceRegister {
override def shortName(): String = "odps"
/** Returns a new base relation with the given parameters. */
override def createRelation(
sqlContext: SQLContext,
parameters: Map[String, String]): BaseRelation = {
val odpsOptions = new ODPSOptions(parameters)
new ODPSRelation(odpsOptions.accessKeyId,
odpsOptions.accessKeySecret,
odpsOptions.odpsUrl,
odpsOptions.tunnelUrl,
odpsOptions.project,
odpsOptions.table,
odpsOptions.partitionSpec,
odpsOptions.numPartitions)(sqlContext)
}
/**
* Creates a Relation instance by first writing the contents of the given DataFrame to Redshift.
*/
override def createRelation(
sqlContext: SQLContext,
saveMode: SaveMode,
parameters: Map[String, String],
data: DataFrame): BaseRelation = {
val odpsOptions = new ODPSOptions(parameters)
new ODPSWriter(
odpsOptions.accessKeyId,
odpsOptions.accessKeySecret,
odpsOptions.odpsUrl,
odpsOptions.tunnelUrl
).saveToTable(odpsOptions.project, odpsOptions.table, data, odpsOptions.partitionSpec,
odpsOptions.allowCreateNewPartition, saveMode)
createRelation(sqlContext, parameters)
}
}