/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * 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.
 */

#pragma once

#include <thrift/lib/cpp2/server/RoundRobinRequestPile.h>

namespace apache::thrift {

class InternalPriorityRequestPile : public RequestPileBase {
 public:
  using Options = RoundRobinRequestPile::Options;
  explicit InternalPriorityRequestPile(Options opts);

  ~InternalPriorityRequestPile() override = default;

  std::optional<ServerRequestRejection> enqueue(
      ServerRequest&& request) override;

  std::optional<ServerRequest> dequeue() override;

  uint64_t requestCount() const override;

  void onRequestFinished(ServerRequestData&) override {}

  std::string describe() const override;

  serverdbginfo::RequestPileDbgInfo getDbgInfo() const override;

 private:
  RoundRobinRequestPile loPriPile_, highPriPile_;
};

} // namespace apache::thrift