// 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.

#pragma once

#include <gen_cpp/Types_types.h>

#include <stdint.h>

#include <memory>

#include <mutex>

#include <set>

#include <shared_mutex>

#include <unordered_map>

#include <utility>

#include "common/be_mock_util.h"

#include "common/global_types.h"

#include "common/status.h"

#include "runtime/runtime_profile.h"

namespace google {

namespace protobuf {

class Closure;

}

} // namespace google

namespace doris {

class RuntimeState;

class RowDescriptor;

class PTransmitDataParams;

class ExchangeLocalState;

class VDataStreamRecvr;

class VDataStreamMgr {

public:

    VDataStreamMgr();

    MOCK_FUNCTION ~VDataStreamMgr();

    std::shared_ptr<VDataStreamRecvr> create_recvr(

            RuntimeState* state, RuntimeProfile::HighWaterMarkCounter* memory_used_counter,

            const TUniqueId& fragment_instance_id, PlanNodeId dest_node_id, int num_senders,

            RuntimeProfile* profile, bool is_merging, size_t data_queue_capacity);

    MOCK_FUNCTION Status find_recvr(const TUniqueId& fragment_instance_id, PlanNodeId node_id,

                                    std::shared_ptr<VDataStreamRecvr>* res,

                                    bool acquire_lock = true);

    Status deregister_recvr(const TUniqueId& fragment_instance_id, PlanNodeId node_id);

    Status transmit_block(const PTransmitDataParams* request, ::google::protobuf::Closure** done,

                          const int64_t wait_for_worker);

    void cancel(const TUniqueId& fragment_instance_id, Status exec_status);

private:

    std::shared_mutex _lock;

    using StreamMap = std::unordered_multimap<uint32_t, std::shared_ptr<VDataStreamRecvr>>;

    StreamMap _receiver_map;

    struct ComparisonOp {

        bool operator()(const std::pair<doris::TUniqueId, PlanNodeId>& a,

                        const std::pair<doris::TUniqueId, PlanNodeId>& b) const {

            if (a.first.hi < b.first.hi) {

                return true;

            } else if (a.first.hi > b.first.hi) {

                return false;

            } else if (a.first.lo < b.first.lo) {

                return true;

            } else if (a.first.lo > b.first.lo) {

                return false;

            }

            return a.second < b.second;

        }

    };

    using FragmentStreamSet = std::set<std::pair<TUniqueId, PlanNodeId>, ComparisonOp>;

    FragmentStreamSet _fragment_stream_set;

    uint32_t get_hash_value(const TUniqueId& fragment_instance_id, PlanNodeId node_id);

};

} // namespace doris