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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
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package org.apache.kudu.client;

import static org.apache.kudu.master.Master.AlterTableRequestPB;
import static org.apache.kudu.master.Master.AlterTableResponsePB;
import static org.apache.kudu.master.Master.MasterFeatures;
import static org.apache.kudu.master.Master.TableIdentifierPB;

import java.util.Collection;
import java.util.List;

import com.google.common.collect.ImmutableList;
import com.google.protobuf.Message;
import io.netty.util.Timer;
import org.apache.yetus.audience.InterfaceAudience;

import org.apache.kudu.util.Pair;

/**
 * RPC used to alter a table. When it returns it doesn't mean that the table is altered,
 * a success just means that the master accepted it.
 */
@InterfaceAudience.Private
class AlterTableRequest extends KuduRpc {

  static final String ALTER_TABLE = "AlterTable";
  private final String name;
  private final AlterTableRequestPB.Builder builder;
  private final List featureFlags;

  AlterTableRequest(KuduTable masterTable,
                    String name,
                    AlterTableOptions ato,
                    Timer timer,
                    long timeoutMillis) {
    super(masterTable, timer, timeoutMillis);
    this.name = name;
    this.builder = ato.getProtobuf();
    this.featureFlags = ato.getRequiredFeatureFlags();
  }

  @Override
  Message createRequestPB() {
    TableIdentifierPB tableID = TableIdentifierPB.newBuilder().setTableName(name).build();
    this.builder.setTable(tableID);
    return this.builder.build();
  }

  @Override
  String serviceName() {
    return MASTER_SERVICE_NAME;
  }

  @Override
  String method() {
    return ALTER_TABLE;
  }

  @Override
  Pair deserialize(final CallResponse callResponse,
                                                String tsUUID) throws KuduException {
    final AlterTableResponsePB.Builder respBuilder = AlterTableResponsePB.newBuilder();
    readProtobuf(callResponse.getPBMessage(), respBuilder);
    AlterTableResponse response = new AlterTableResponse(
        timeoutTracker.getElapsedMillis(),
        tsUUID,
        respBuilder.hasTableId() ? respBuilder.getTableId().toStringUtf8() : null);

    return new Pair(
        response, respBuilder.hasError() ? respBuilder.getError() : null);
  }

  @Override
  Collection getRequiredFeatures() {
    return featureFlags;
  }
}




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