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.processor;
  
  import java.util.Collection;
  
  import com.alibaba.csp.sentinel.cluster.ClusterConstants;
  import com.alibaba.csp.sentinel.cluster.TokenResult;
  import com.alibaba.csp.sentinel.cluster.TokenService;
  import com.alibaba.csp.sentinel.cluster.annotation.RequestType;
  import com.alibaba.csp.sentinel.cluster.request.ClusterRequest;
  import com.alibaba.csp.sentinel.cluster.request.data.ParamFlowRequestData;
  import com.alibaba.csp.sentinel.cluster.response.ClusterResponse;
  import com.alibaba.csp.sentinel.cluster.response.data.FlowTokenResponseData;
  import com.alibaba.csp.sentinel.cluster.server.TokenServiceProvider;
  
  /**
   * @author Eric Zhao
   * @since 1.4.0
   */
  @RequestType(ClusterConstants.MSG_TYPE_PARAM_FLOW)
  public class ParamFlowRequestProcessor implements RequestProcessor<ParamFlowRequestData, FlowTokenResponseData> {
  
      @Override
      public ClusterResponse<FlowTokenResponseData> processRequest(ClusterRequest<ParamFlowRequestData> request) {
          TokenService tokenService = TokenServiceProvider.getService();
  
          long flowId = request.getData().getFlowId();
          int count = request.getData().getCount();
          Collection<Object> args = request.getData().getParams();
  
          TokenResult result = tokenService.requestParamToken(flowId, count, args);
          return toResponse(result, request);
      }
  
      private ClusterResponse<FlowTokenResponseData> toResponse(TokenResult result, ClusterRequest request) {
          return new ClusterResponse<>(request.getId(), request.getType(), result.getStatus(),
              new FlowTokenResponseData()
                  .setRemainingCount(result.getRemaining())
                  .setWaitInMs(0)
          );
      }
  }
  