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.ha;
  
  import com.cloud.event.EventTypes;
  import com.cloud.exception.ConcurrentOperationException;
  import com.cloud.exception.InsufficientCapacityException;
  import com.cloud.exception.NetworkRuleConflictException;
  import com.cloud.exception.ResourceAllocationException;
  import com.cloud.exception.ResourceUnavailableException;
  import com.cloud.host.Host;
  import org.apache.cloudstack.acl.RoleType;
  import org.apache.cloudstack.api.APICommand;
  import org.apache.cloudstack.api.ApiArgValidator;
  import org.apache.cloudstack.api.ApiConstants;
  import org.apache.cloudstack.api.ApiErrorCode;
  import org.apache.cloudstack.api.BaseAsyncCmd;
  import org.apache.cloudstack.api.Parameter;
  import org.apache.cloudstack.api.ServerApiException;
  import org.apache.cloudstack.api.response.HostHAResponse;
  import org.apache.cloudstack.api.response.HostResponse;
  import org.apache.cloudstack.context.CallContext;
  import org.apache.cloudstack.ha.HAConfigManager;
  import org.apache.cloudstack.ha.HAResource;
  
  import javax.inject.Inject;
  
  @APICommand(name = "enableHAForHost", description = "Enables HA for a host",
          responseObject = HostHAResponse.class,
          requestHasSensitiveInfo = false, responseHasSensitiveInfo = false,
          since = "4.11", authorized = {RoleType.Admin})
  public final class EnableHAForHostCmd extends BaseAsyncCmd {
  
      @Inject
      private HAConfigManager haConfigManager;
  
      /////////////////////////////////////////////////////
      //////////////// API parameters /////////////////////
      /////////////////////////////////////////////////////
  
      @Parameter(name = ApiConstants.HOST_ID, type = CommandType.UUID, entityType = HostResponse.class,
              description = "ID of the host", required = true, validations = {ApiArgValidator.PositiveNumber})
      private Long hostId;
  
      /////////////////////////////////////////////////////
      /////////////////// Accessors ///////////////////////
      /////////////////////////////////////////////////////
  
      public Long getHostId() {
          return hostId;
      }
  
      /////////////////////////////////////////////////////
      /////////////// API Implementation///////////////////
      /////////////////////////////////////////////////////
  
      @Override
      public long getEntityOwnerId() {
          return CallContext.current().getCallingAccountId();
      }
  
      private void setupResponse(final boolean result, final String resourceUuid) {
          final HostHAResponse response = new HostHAResponse();
          response.setId(resourceUuid);
          response.setEnabled(true);
          response.setStatus(result);
          response.setResponseName(getCommandName());
          setResponseObject(response);
      }
  
      @Override
      public void execute() throws ResourceUnavailableException, InsufficientCapacityException, ServerApiException, ConcurrentOperationException, ResourceAllocationException, NetworkRuleConflictException {
          final Host host = _resourceService.getHost(getHostId());
          if (host == null) {
              throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "Unable to find host by ID: " + getHostId());
          }
          final boolean result = haConfigManager.enableHA(host.getId(), HAResource.ResourceType.Host);
  
          CallContext.current().setEventDetails("Host Id:" + host.getId() + " HA enabled: true");
          CallContext.current().putContextParameter(Host.class, host.getUuid());
  
          setupResponse(result, host.getUuid());
      }
  
      @Override
      public String getEventType() {
          return EventTypes.EVENT_HA_RESOURCE_ENABLE;
      }
  
      @Override
      public String getEventDescription() {
          return "enable HA for host: " + getHostId();
      }
  }
  