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/*
 * Copyright 2017 Huawei Technologies Co., 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 io.servicecomb.provider.rest.common;

import javax.servlet.http.HttpServletRequest;

import io.servicecomb.common.rest.RestConst;
import io.servicecomb.core.Invocation;
import io.servicecomb.swagger.invocation.SwaggerInvocation;
import io.servicecomb.swagger.invocation.arguments.producer.AbstractProducerContextArgMapper;

public class ProducerHttpRequestArgMapper extends AbstractProducerContextArgMapper {
  public ProducerHttpRequestArgMapper(int producerArgIdx) {
    super(producerArgIdx);
  }

  @Override
  public Object createContextArg(SwaggerInvocation swaggerInvocation) {
    Invocation invocation = (Invocation) swaggerInvocation;
    // 从rest transport来
    HttpServletRequest request = (HttpServletRequest) invocation.getHandlerContext().get(RestConst.REST_REQUEST);
    if (request != null) {
      return request;
    }

    // 通过args模拟request
    return new InvocationToHttpServletRequest(invocation);
  }
}