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.meta.ReloadManager;
  import com.actiontech.dble.meta.ReloadStatus;
  import com.actiontech.dble.net.mysql.*;
  import com.actiontech.dble.services.manager.ManagerService;
  import com.actiontech.dble.util.FormatUtil;
  import com.actiontech.dble.util.LongUtil;
  import com.actiontech.dble.util.StringUtil;
  
  import java.nio.ByteBuffer;
  
  import static com.actiontech.dble.meta.ReloadStatus.RELOAD_END_NORMAL;
  import static com.actiontech.dble.meta.ReloadStatus.RELOAD_INTERRUPUTED;
  
  /**
   * Created by szf on 2019/7/15.
   */
  public final class ShowReloadStatus {
  
      private ShowReloadStatus() {
  
      }
  
      private static final int FIELD_COUNT = 8;
      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("INDEX", Fields.FIELD_TYPE_LONGLONG);
          FIELDS[i++].setPacketId(++packetId);
  
          FIELDS[i] = PacketUtil.getField("CLUSTER", Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
  
          FIELDS[i] = PacketUtil.getField("RELOAD_TYPE",
                  Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
  
          FIELDS[i] = PacketUtil.getField("RELOAD_STATUS",
                  Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
  
          FIELDS[i] = PacketUtil.getField("LAST_RELOAD_START",
                  Fields.FIELD_TYPE_VAR_STRING);
          FIELDS[i++].setPacketId(++packetId);
  
          FIELDS[i] = PacketUtil.getField("LAST_RELOAD_END",
                  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("END_TYPE",
                  Fields.FIELD_TYPE_VAR_STRING);
          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();
          RowDataPacket row = getRow(service.getCharset().getResults());
          if (row != null) {
              row.setPacketId(++packetId);
              buffer = row.write(buffer, service, true);
          }
  
          // write last eof
          EOFRowPacket lastEof = new EOFRowPacket();
          lastEof.setPacketId(++packetId);
  
  
          lastEof.write(buffer, service);
      }
  
      private static RowDataPacket getRow(String charset) {
          ReloadStatus status = ReloadManager.getReloadInstance().getStatus();
          RowDataPacket row = null;
          if (status != null) {
              row = new RowDataPacket(FIELD_COUNT);
              row.add(LongUtil.toBytes(status.getId()));
              row.add(StringUtil.encode(status.getClusterType(), charset));
              row.add(StringUtil.encode(status.getReloadType().toString(), charset));
              row.add(StringUtil.encode(status.getStatus(), charset));
              row.add(StringUtil.encode(FormatUtil.formatDate(status.getLastReloadStart()), charset));
              row.add(StringUtil.encode(FormatUtil.formatDate(status.getLastReloadEnd()), charset));
              row.add(StringUtil.encode(status.getTriggerType(), charset));
              row.add(StringUtil.encode(status.getLastReloadEnd() != 0 ? (status.isReloadInterrupted() ? RELOAD_INTERRUPUTED : RELOAD_END_NORMAL) : "", charset));
          }
          return row;
      }
  }
  