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.network.element;
  
  import java.util.List;
  
  import com.cloud.exception.ResourceUnavailableException;
  import com.cloud.network.RemoteAccessVpn;
  import com.cloud.network.VpnUser;
  import com.cloud.utils.component.Adapter;
  
  public interface RemoteAccessVPNServiceProvider extends Adapter {
      String[] applyVpnUsers(RemoteAccessVpn vpn, List<? extends VpnUser> users) throws ResourceUnavailableException;
  
      boolean startVpn(RemoteAccessVpn vpn) throws ResourceUnavailableException;
  
      boolean stopVpn(RemoteAccessVpn vpn) throws ResourceUnavailableException;
  }
  