/*
 * 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.phoenix.util;

import java.io.IOException;
import java.util.List;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.coprocessor.Batch;
import org.apache.hadoop.hbase.ipc.CoprocessorRpcUtils;
import org.apache.hadoop.hbase.ipc.ServerRpcController;
import org.apache.hadoop.hbase.protobuf.generated.ClientProtos;
import org.apache.phoenix.coprocessor.generated.MetaDataProtos.MetaDataResponse;
import org.apache.phoenix.coprocessor.generated.TaskMetaDataProtos;
import org.apache.phoenix.coprocessor.generated.TaskMetaDataProtos.TaskMetaDataService;
import org.apache.phoenix.protobuf.ProtobufUtil;

/**
 * Callable implementation for coprocessor endpoint associated with SYSTEM.TASK
 */
public class TaskMetaDataServiceCallBack
  implements Batch.Call<TaskMetaDataService, MetaDataResponse> {

  private final List<Mutation> taskMutations;

  public TaskMetaDataServiceCallBack(List<Mutation> taskMutations) {
    this.taskMutations = taskMutations;
  }

  @Override
  public MetaDataResponse call(TaskMetaDataService instance) throws IOException {
    ServerRpcController controller = new ServerRpcController();
    CoprocessorRpcUtils.BlockingRpcCallback<MetaDataResponse> rpcCallback =
      new CoprocessorRpcUtils.BlockingRpcCallback<>();
    TaskMetaDataProtos.TaskMutateRequest.Builder builder =
      TaskMetaDataProtos.TaskMutateRequest.newBuilder();
    for (Mutation mutation : taskMutations) {
      ClientProtos.MutationProto mp = ProtobufUtil.toProto(mutation);
      builder.addTableMetadataMutations(mp.toByteString());
    }
    TaskMetaDataProtos.TaskMutateRequest build = builder.build();
    instance.upsertTaskDetails(controller, build, rpcCallback);
    if (controller.getFailedOn() != null) {
      throw controller.getFailedOn();
    }
    return rpcCallback.get();
  }
}
