content: /*
   * Copyright (C) 2016-2023 ActionTech.
   * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
   */
  
  package com.actiontech.dble.services.manager.response;
  
  import com.actiontech.dble.backend.mysql.PacketUtil;
  import com.actiontech.dble.config.Fields;
  import com.actiontech.dble.net.mysql.*;
  import com.actiontech.dble.services.manager.ManagerService;
  import com.actiontech.dble.singleton.TsQueriesCounter;
  import com.actiontech.dble.util.LongUtil;
  
  import java.nio.ByteBuffer;
  
  /**
   * Created by szf on 2019/12/17.
   */
  public final class ShowQuestions {
  
      private ShowQuestions() {
      }
  
      private static final int FIELD_COUNT = 2;
      private static final ResultSetHeaderPacket HEADER = PacketUtil.getHeader(FIELD_COUNT);
      private static final FieldPacket[] FIELDS = new FieldPacket[FIELD_COUNT];
      private static final EOFPacket EOF = new EOFPacket();
  
      static {
          int i = 0;
          byte packetId = 0;
          HEADER.setPacketId(++packetId);
  
          FIELDS[i] = PacketUtil.getField("Questions", Fields.FIELD_TYPE_LONG);
          FIELDS[i++].setPacketId(++packetId);
  
          FIELDS[i] = PacketUtil.getField("Transactions", Fields.FIELD_TYPE_LONG);
          FIELDS[i++].setPacketId(++packetId);
  
          EOF.setPacketId(++packetId);
      }
  
      public static void execute(ManagerService service) {
          ByteBuffer buffer = service.allocate();
  
          // write header
          buffer = HEADER.write(buffer, service, true);
  
          // write fields
          for (FieldPacket field : FIELDS) {
              buffer = field.write(buffer, service, true);
          }
  
          // write eof
          buffer = EOF.write(buffer, service, true);
  
          // write rows
          byte packetId = EOF.getPacketId();
  
  
          TsQueriesCounter.CalculateResult result = TsQueriesCounter.getInstance().calculate();
          RowDataPacket row = new RowDataPacket(FIELD_COUNT);
          row.add(LongUtil.toBytes(result.queries));
          row.add(LongUtil.toBytes(result.transactions));
          row.setPacketId(++packetId);
          buffer = row.write(buffer, service, true);
  
          EOFRowPacket lastEof = new EOFRowPacket();
          lastEof.setPacketId(++packetId);
  
  
          lastEof.write(buffer, service);
      }
  
  }
  