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.ha;
  
  import com.actiontech.dble.backend.datasource.HaChangeStatus;
  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.HaConfigManager;
  import com.actiontech.dble.util.FormatUtil;
  import com.actiontech.dble.util.StringUtil;
  
  import java.nio.ByteBuffer;
  import java.util.Map;
  
  /**
   * Created by szf on 2019/10/28.
   */
  public final class DbGroupHaEvents {
  
      private static final int FIELD_COUNT = 5;
      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("ID", Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
          FIELDS[i] = PacketUtil.getField("COMMAND", Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
          FIELDS[i] = PacketUtil.getField("TRIGGER_TYPE", Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
          FIELDS[i] = PacketUtil.getField("START_TIME", Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
          FIELDS[i] = PacketUtil.getField("STAGE", Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
          EOF.setPacketId(++packetId);
      }
  
      private DbGroupHaEvents() {
      }
  
      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);
          }
          buffer = EOF.write(buffer, service, true);
          byte packetId = EOF.getPacketId();
  
          for (Map.Entry<Integer, HaChangeStatus> entry : HaConfigManager.getInstance().getUnfinised().entrySet()) {
              RowDataPacket row = getRow(entry.getValue(), service.getCharset().getResults());
              row.setPacketId(++packetId);
              buffer = row.write(buffer, service, true);
          }
          EOFRowPacket lastEof = new EOFRowPacket();
          lastEof.setPacketId(++packetId);
  
          lastEof.write(buffer, service);
      }
  
  
      private static RowDataPacket getRow(HaChangeStatus event, String charset) {
          RowDataPacket row = new RowDataPacket(FIELD_COUNT);
          row.add(StringUtil.encode("" + event.getIndex(), charset));
          row.add(StringUtil.encode(event.getCommand(), charset));
          row.add(StringUtil.encode(event.getType().toString(), charset));
          row.add(StringUtil.encode(FormatUtil.formatDate(event.getStartTimeStamp()), charset));
          row.add(StringUtil.encode(event.getStage().toString(), charset));
          return row;
      }
  }
  