content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed 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.alibaba.csp.sentinel.cluster.server;
  
  import java.util.Collection;
  
  import com.alibaba.csp.sentinel.cluster.TokenResult;
  import com.alibaba.csp.sentinel.cluster.TokenResultStatus;
  import com.alibaba.csp.sentinel.cluster.TokenService;
  
  /**
   * Default embedded token server in Sentinel which wraps the {@link SentinelDefaultTokenServer}
   * and the {@link TokenService} from SPI provider.
   *
   * @author Eric Zhao
   * @since 1.4.0
   */
  public class DefaultEmbeddedTokenServer implements EmbeddedClusterTokenServer {
  
      private final TokenService tokenService = TokenServiceProvider.getService();
      private final ClusterTokenServer server = new SentinelDefaultTokenServer(true);
  
      @Override
      public void start() throws Exception {
          server.start();
      }
  
      @Override
      public void stop() throws Exception {
          server.stop();
      }
  
      @Override
      public TokenResult requestToken(Long ruleId, int acquireCount, boolean prioritized) {
          if (tokenService != null) {
              return tokenService.requestToken(ruleId, acquireCount, prioritized);
          }
          return new TokenResult(TokenResultStatus.FAIL);
      }
  
      @Override
      public TokenResult requestParamToken(Long ruleId, int acquireCount, Collection<Object> params) {
          if (tokenService != null) {
              return tokenService.requestParamToken(ruleId, acquireCount, params);
          }
          return new TokenResult(TokenResultStatus.FAIL);
      }
  
      @Override
      public TokenResult requestConcurrentToken(String clientAddress, Long ruleId, int acquireCount) {
          return null;
      }
  
      @Override
      public void releaseConcurrentToken(Long tokenId) {
      }
  }
  