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 com.cloud.host;
  
  import com.cloud.resource.ResourceState;
  
  public enum ControlState {
      Enabled,
      Disabled,
      Offline,
      Maintenance,
      Unknown;
  
      public static ControlState getControlState(Status hostStatus, ResourceState hostResourceState) {
          if (hostStatus == null || Status.Unknown.equals(hostStatus) || hostResourceState == null) {
              return ControlState.Unknown;
          } else if (hostStatus.lostConnection()) {
              return Offline;
          } else if (ResourceState.isMaintenanceState(hostResourceState)) {
              return Maintenance;
          } else if (ResourceState.Enabled.equals(hostResourceState)) {
              return Enabled;
          } else {
              return Disabled;
          }
      }
  }
  