// 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/RuntimeProfile_types.h>

#include <string>

#include "runtime/runtime_profile.h"

namespace doris {

class RuntimeProfileCounterTreeNode {

public:

    using CounterMap = std::map<std::string, RuntimeProfile::Counter*>;

    using ChildCounterMap = std::map<std::string, std::set<std::string>>;

    RuntimeProfileCounterTreeNode() = default;

    ~RuntimeProfileCounterTreeNode() {

        // counter is not owned by this class

        counter = nullptr;

    };

    // Create a tree node from a counter map and a child counter map.

    static RuntimeProfileCounterTreeNode from_map(const CounterMap& counterMap,

                                                  const ChildCounterMap& childCounterMap,

                                                  const std::string& rootName);

    // Prune the tree by:

    // 1. Remove all leaf nodes whose level is greater than the given level.

    // 2. Remove all nodes whose children are all pruned.

    static RuntimeProfileCounterTreeNode prune_the_tree(RuntimeProfileCounterTreeNode node,

                                                        int64_t level);

    // Convert the counter tree to a list of TCounter objects and a map of tree topology.

    void to_thrift(std::vector<TCounter>& tcounter,

                   std::map<std::string, std::set<std::string>>& child_counter_map) const;

    void to_proto(

            google::protobuf::RepeatedPtrField<PProfileCounter>* proto_counters,

            google::protobuf::Map<std::string, PProfileChildCounterSet>* child_counter_map) const;

    // Conver this node to a TCounter object.

    TCounter to_thrift() const;

    PProfileCounter to_proto() const;

private:

    std::string name;

    // counter is not owned by this class

    RuntimeProfile::Counter* counter = nullptr;

    std::vector<RuntimeProfileCounterTreeNode> children;

};

} // namespace doris