content: /**
   * 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.ambari.server.events.publishers;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.ambari.server.EagerSingleton;
  import org.apache.ambari.server.controller.internal.CalculatedStatus;
  import org.apache.ambari.server.events.RequestUpdateEvent;
  import org.apache.ambari.server.events.STOMPEvent;
  import org.apache.ambari.server.orm.dao.ClusterDAO;
  import org.apache.ambari.server.orm.dao.HostRoleCommandDAO;
  import org.apache.ambari.server.orm.dao.RequestDAO;
  import org.apache.ambari.server.orm.entities.RequestEntity;
  import org.apache.ambari.server.topology.TopologyManager;
  
  import com.google.common.eventbus.EventBus;
  import com.google.inject.Inject;
  
  @EagerSingleton
  public class RequestUpdateEventPublisher extends BufferedUpdateEventPublisher<RequestUpdateEvent> {
  
    @Inject
    private HostRoleCommandDAO hostRoleCommandDAO;
  
    @Inject
    private TopologyManager topologyManager;
  
    @Inject
    private RequestDAO requestDAO;
  
    @Inject
    private ClusterDAO clusterDAO;
  
    @Inject
    public RequestUpdateEventPublisher(STOMPUpdatePublisher stompUpdatePublisher) {
      super(stompUpdatePublisher);
    }
  
    @Override
    public STOMPEvent.Type getType() {
      return STOMPEvent.Type.REQUEST;
    }
  
    @Override
    public void mergeBufferAndPost(List<RequestUpdateEvent> events, EventBus m_eventBus) {
      Map<Long, RequestUpdateEvent> filteredRequests = new HashMap<>();
      for (RequestUpdateEvent event : events) {
        Long requestId = event.getRequestId();
        if (filteredRequests.containsKey(requestId)) {
          RequestUpdateEvent filteredRequest = filteredRequests.get(requestId);
          filteredRequest.setEndTime(event.getEndTime());
          filteredRequest.setRequestStatus(event.getRequestStatus());
          filteredRequest.setRequestContext(event.getRequestContext());
          filteredRequest.getHostRoleCommands().removeAll(event.getHostRoleCommands());
          filteredRequest.getHostRoleCommands().addAll(event.getHostRoleCommands());
        } else {
          filteredRequests.put(requestId, event);
        }
      }
      for (RequestUpdateEvent requestUpdateEvent : filteredRequests.values()) {
        RequestUpdateEvent filled = fillRequest(requestUpdateEvent);
        m_eventBus.post(filled);
      }
    }
  
    private RequestUpdateEvent fillRequest(RequestUpdateEvent event) {
      event.setProgressPercent(
          CalculatedStatus.statusFromRequest(hostRoleCommandDAO, topologyManager, event.getRequestId()).getPercent());
      if (event.getEndTime() == null || event.getStartTime() == null || event.getClusterName() == null
          || event.getRequestContext() == null) {
        RequestEntity requestEntity = requestDAO.findByPK(event.getRequestId());
        event.setStartTime(requestEntity.getStartTime());
        event.setUserName(requestEntity.getUserName());
        event.setEndTime(requestEntity.getEndTime());
        if (requestEntity.getClusterId() != -1) {
          event.setClusterName(clusterDAO.findById(requestEntity.getClusterId()).getClusterName());
        }
        event.setRequestContext(requestEntity.getRequestContext());
        event.setRequestStatus(requestEntity.getStatus());
      }
      return event;
    }
  }
  