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OracleConnectionProvider.scala
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OracleConnectionProvider.scala
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/*
* 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.execution.datasources.jdbc.connection
import java.security.PrivilegedExceptionAction
import java.sql.{Connection, Driver}
import java.util.Properties
import org.apache.hadoop.security.UserGroupInformation
import org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions
private[sql] class OracleConnectionProvider(driver: Driver, options: JDBCOptions)
extends SecureConnectionProvider(driver, options) {
override val appEntry: String = "kprb5module"
override def getConnection(): Connection = {
setAuthenticationConfigIfNeeded()
UserGroupInformation.loginUserFromKeytabAndReturnUGI(options.principal, options.keytab).doAs(
new PrivilegedExceptionAction[Connection]() {
override def run(): Connection = {
OracleConnectionProvider.super.getConnection()
}
}
)
}
override def getAdditionalProperties(): Properties = {
val result = new Properties()
// This prop is needed to turn on kerberos authentication in the JDBC driver.
// The possible values can be found in AnoServices public interface
// The value is coming from AUTHENTICATION_KERBEROS5 final String in driver version 19.6.0.0
result.put("oracle.net.authentication_services", "(KERBEROS5)");
result
}
override def setAuthenticationConfigIfNeeded(): Unit = SecurityConfigurationLock.synchronized {
val (parent, configEntry) = getConfigWithAppEntry()
if (configEntry == null || configEntry.isEmpty) {
setAuthenticationConfig(parent)
}
}
}
private[sql] object OracleConnectionProvider {
val driverClass = "oracle.jdbc.OracleDriver"
}