/*
 * 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 com.huawei.bigdata.spark.examples.hbasecontext

import com.huawei.hadoop.security.LoginUtil
import org.apache.hadoop.hbase.client.Delete
import org.apache.hadoop.hbase.spark.HBaseContext
import org.apache.hadoop.hbase.util.Bytes
import org.apache.hadoop.hbase.HBaseConfiguration
import org.apache.hadoop.hbase.TableName
import org.apache.spark.SparkConf
import org.apache.spark.SparkContext

/**
 * This is a simple example of deleting records in HBase
 * with the bulkDelete function.
 */
object HBaseBulkDeleteExample {
  def main(args: Array[String]) {
    if (args.length < 1) {
      println("HBaseBulkDeleteExample {tableName} missing an argument")
      return
    }
    LoginUtil.loginWithUserKeytab
    val tableName = args(0)

    val sparkConf = new SparkConf().setAppName("HBaseBulkDeleteExample " + tableName)
    val sc = new SparkContext(sparkConf)

    try {
      //[Array[Byte]]
      val rdd = sc.parallelize(Array(
        Bytes.toBytes("1"),
        Bytes.toBytes("2"),
        Bytes.toBytes("3"),
        Bytes.toBytes("4"),
        Bytes.toBytes("5")
      ))

      val conf = HBaseConfiguration.create()

      val hbaseContext = new HBaseContext(sc, conf)
      hbaseContext.bulkDelete[Array[Byte]](rdd,
        TableName.valueOf(tableName),
        putRecord => new Delete(putRecord),
        4)
    } finally {
      sc.stop()
    }
  }
}
