spark SparkGetFunctionsOperation 源码

spark SparkGetFunctionsOperation 代码

文件路径：/sql/hive-thriftserver/src/main/scala/org/apache/spark/sql/hive/thriftserver/SparkGetFunctionsOperation.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.hive.thriftserver

import java.sql.DatabaseMetaData

import scala.collection.JavaConverters.seqAsJavaListConverter

import org.apache.hadoop.hive.ql.security.authorization.plugin.{HiveOperationType, HivePrivilegeObjectUtils}
import org.apache.hive.service.cli._
import org.apache.hive.service.cli.operation.GetFunctionsOperation
import org.apache.hive.service.cli.operation.MetadataOperation.DEFAULT_HIVE_CATALOG
import org.apache.hive.service.cli.session.HiveSession

import org.apache.spark.internal.Logging
import org.apache.spark.sql.SQLContext

/**
 * Spark's own GetFunctionsOperation
 *
 * @param sqlContext SQLContext to use
 * @param parentSession a HiveSession from SessionManager
 * @param catalogName catalog name. null if not applicable
 * @param schemaName database name, null or a concrete database name
 * @param functionName function name pattern
 */
private[hive] class SparkGetFunctionsOperation(
    val sqlContext: SQLContext,
    parentSession: HiveSession,
    catalogName: String,
    schemaName: String,
    functionName: String)
  extends GetFunctionsOperation(parentSession, catalogName, schemaName, functionName)
  with SparkOperation
  with Logging {

  override def runInternal(): Unit = {
    // Do not change cmdStr. It's used for Hive auditing and authorization.
    val cmdStr = s"catalog : $catalogName, schemaPattern : $schemaName"
    val logMsg = s"Listing functions '$cmdStr, functionName : $functionName'"
    logInfo(s"$logMsg with $statementId")
    setState(OperationState.RUNNING)
    // Always use the latest class loader provided by executionHive's state.
    val executionHiveClassLoader = sqlContext.sharedState.jarClassLoader
    Thread.currentThread().setContextClassLoader(executionHiveClassLoader)

    val catalog = sqlContext.sessionState.catalog
    // get databases for schema pattern
    val schemaPattern = convertSchemaPattern(schemaName)
    val matchingDbs = catalog.listDatabases(schemaPattern)
    val functionPattern = CLIServiceUtils.patternToRegex(functionName)

    if (isAuthV2Enabled) {
      // authorize this call on the schema objects
      val privObjs =
        HivePrivilegeObjectUtils.getHivePrivDbObjects(seqAsJavaListConverter(matchingDbs).asJava)
      authorizeMetaGets(HiveOperationType.GET_FUNCTIONS, privObjs, cmdStr)
    }

    HiveThriftServer2.eventManager.onStatementStart(
      statementId,
      parentSession.getSessionHandle.getSessionId.toString,
      logMsg,
      statementId,
      parentSession.getUsername)

    try {
      matchingDbs.foreach { db =>
        catalog.listFunctions(db, functionPattern).foreach {
          case (funcIdentifier, _) =>
            val info = catalog.lookupFunctionInfo(funcIdentifier)
            val rowData = Array[AnyRef](
              DEFAULT_HIVE_CATALOG, // FUNCTION_CAT
              db, // FUNCTION_SCHEM
              funcIdentifier.funcName, // FUNCTION_NAME
              s"Usage: ${info.getUsage}\nExtended Usage:${info.getExtended}", // REMARKS
              DatabaseMetaData.functionResultUnknown.asInstanceOf[AnyRef], // FUNCTION_TYPE
              info.getClassName) // SPECIFIC_NAME
            rowSet.addRow(rowData);
        }
      }
      setState(OperationState.FINISHED)
    } catch onError()

    HiveThriftServer2.eventManager.onStatementFinish(statementId)
  }
}

相关信息

spark 源码目录

相关文章

spark FetchIterator 源码

spark HiveThriftServer2 源码

spark HiveThriftServerErrors 源码

spark ReflectionUtils 源码

spark RowSetUtils 源码

spark SparkExecuteStatementOperation 源码

spark SparkGetCatalogsOperation 源码

spark SparkGetColumnsOperation 源码

spark SparkGetSchemasOperation 源码

spark SparkGetTableTypesOperation 源码