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.cloudstack.api.command.admin.internallb;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.cloudstack.api.APICommand;
  import org.apache.cloudstack.api.ApiConstants;
  import org.apache.cloudstack.api.BaseListCmd;
  import org.apache.cloudstack.api.Parameter;
  import org.apache.cloudstack.api.ServerApiException;
  import org.apache.cloudstack.api.response.InternalLoadBalancerElementResponse;
  import org.apache.cloudstack.api.response.ListResponse;
  import org.apache.cloudstack.api.response.ProviderResponse;
  import org.apache.cloudstack.network.element.InternalLoadBalancerElementService;
  
  import com.cloud.exception.ConcurrentOperationException;
  import com.cloud.exception.InsufficientCapacityException;
  import com.cloud.exception.ResourceAllocationException;
  import com.cloud.exception.ResourceUnavailableException;
  import com.cloud.network.VirtualRouterProvider;
  
  @APICommand(name = "listInternalLoadBalancerElements",
              description = "Lists all available Internal Load Balancer elements.",
              responseObject = InternalLoadBalancerElementResponse.class,
              since = "4.2.0",
              requestHasSensitiveInfo = false,
              responseHasSensitiveInfo = false)
  public class ListInternalLoadBalancerElementsCmd extends BaseListCmd {
  
      /////////////////////////////////////////////////////
      //////////////// API parameters /////////////////////
      /////////////////////////////////////////////////////
      @Parameter(name = ApiConstants.ID,
                 type = CommandType.UUID,
                 entityType = InternalLoadBalancerElementResponse.class,
                 description = "list internal load balancer elements by id")
      private Long id;
  
      @Parameter(name = ApiConstants.NSP_ID,
                 type = CommandType.UUID,
                 entityType = ProviderResponse.class,
                 description = "list internal load balancer elements by network service provider id")
      private Long nspId;
  
      @Parameter(name = ApiConstants.ENABLED, type = CommandType.BOOLEAN, description = "list internal load balancer elements by enabled state")
      private Boolean enabled;
  
      /////////////////////////////////////////////////////
      /////////////////// Accessors ///////////////////////
      /////////////////////////////////////////////////////
  
      public Long getId() {
          return id;
      }
  
      public Long getNspId() {
          return nspId;
      }
  
      public Boolean getEnabled() {
          return enabled;
      }
  
      @Override
      public void execute() throws ResourceUnavailableException, InsufficientCapacityException, ServerApiException, ConcurrentOperationException,
          ResourceAllocationException {
          List<InternalLoadBalancerElementService> services;
          if (id == null && nspId == null) {
              services = _networkService.getInternalLoadBalancerElements();
          } else {
              InternalLoadBalancerElementService elementService = id != null ? _networkService.getInternalLoadBalancerElementById(id) : _networkService.getInternalLoadBalancerElementByNetworkServiceProviderId(nspId);
              services = Collections.singletonList(elementService);
          }
          ListResponse<InternalLoadBalancerElementResponse> response = new ListResponse<InternalLoadBalancerElementResponse>();
          List<InternalLoadBalancerElementResponse> providerResponses = new ArrayList<InternalLoadBalancerElementResponse>();
          for (InternalLoadBalancerElementService service : services) {
              List<? extends VirtualRouterProvider> providers = service.searchForInternalLoadBalancerElements(getId(), getNspId(), getEnabled());
              for (VirtualRouterProvider provider : providers) {
                  InternalLoadBalancerElementResponse providerResponse = _responseGenerator.createInternalLbElementResponse(provider);
                  providerResponses.add(providerResponse);
              }
          }
          response.setResponses(providerResponses);
          response.setResponseName(getCommandName());
          this.setResponseObject(response);
  
      }
  }
  