iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/metadata/ShowConfigNodesTask.java

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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,
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package org.apache.iotdb.db.queryengine.plan.execution.config.metadata;

import org.apache.iotdb.confignode.rpc.thrift.TConfigNodeInfo;
import org.apache.iotdb.confignode.rpc.thrift.TShowConfigNodesResp;
import org.apache.iotdb.db.queryengine.common.header.ColumnHeader;
import org.apache.iotdb.db.queryengine.common.header.ColumnHeaderConstant;
import org.apache.iotdb.db.queryengine.common.header.DatasetHeader;
import org.apache.iotdb.db.queryengine.common.header.DatasetHeaderFactory;
import org.apache.iotdb.db.queryengine.plan.execution.config.ConfigTaskResult;
import org.apache.iotdb.db.queryengine.plan.execution.config.IConfigTask;
import org.apache.iotdb.db.queryengine.plan.execution.config.executor.IConfigTaskExecutor;
import org.apache.iotdb.rpc.TSStatusCode;

import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture;
import org.apache.tsfile.enums.TSDataType;
import org.apache.tsfile.read.common.block.TsBlockBuilder;
import org.apache.tsfile.utils.BytesUtils;

import java.util.List;
import java.util.stream.Collectors;

public class ShowConfigNodesTask implements IConfigTask {

  public ShowConfigNodesTask() {
    // do nothing
  }

  @Override
  public ListenableFuture<ConfigTaskResult> execute(IConfigTaskExecutor configTaskExecutor)
      throws InterruptedException {
    return configTaskExecutor.showConfigNodes();
  }

  public static void buildTSBlock(
      TShowConfigNodesResp showConfigNodesResp, SettableFuture<ConfigTaskResult> future) {
    List<TSDataType> outputDataTypes =
        ColumnHeaderConstant.showConfigNodesColumnHeaders.stream()
            .map(ColumnHeader::getColumnType)
            .collect(Collectors.toList());
    TsBlockBuilder builder = new TsBlockBuilder(outputDataTypes);
    if (showConfigNodesResp.getConfigNodesInfoList() != null) {
      for (TConfigNodeInfo configNodeInfo : showConfigNodesResp.getConfigNodesInfoList()) {
        builder.getTimeColumnBuilder().writeLong(0L);
        builder.getColumnBuilder(0).writeInt(configNodeInfo.getConfigNodeId());
        builder.getColumnBuilder(1).writeBinary(BytesUtils.valueOf(configNodeInfo.getStatus()));
        builder
            .getColumnBuilder(2)
            .writeBinary(BytesUtils.valueOf(configNodeInfo.getInternalAddress()));
        builder.getColumnBuilder(3).writeInt(configNodeInfo.getInternalPort());
        builder.getColumnBuilder(4).writeBinary(BytesUtils.valueOf(configNodeInfo.getRoleType()));
        builder.declarePosition();
      }
    }
    DatasetHeader datasetHeader = DatasetHeaderFactory.getShowConfigNodesHeader();
    future.set(new ConfigTaskResult(TSStatusCode.SUCCESS_STATUS, builder.build(), datasetHeader));
  }
}