55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
//
|
|
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2024
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
#pragma once
|
|
|
|
#include "td/actor/actor.h"
|
|
|
|
#include "td/utils/common.h"
|
|
#include "td/utils/FlatHashMap.h"
|
|
#include "td/utils/Promise.h"
|
|
#include "td/utils/Slice.h"
|
|
#include "td/utils/Status.h"
|
|
|
|
#include <functional>
|
|
#include <queue>
|
|
|
|
namespace td {
|
|
|
|
// merges queries into a single request
|
|
class QueryMerger final : public Actor {
|
|
public:
|
|
QueryMerger(Slice name, size_t max_concurrent_query_count, size_t max_merged_query_count);
|
|
|
|
using MergeFunction = std::function<void(vector<int64> query_ids, Promise<Unit> &&promise)>;
|
|
void set_merge_function(MergeFunction merge_function) {
|
|
merge_function_ = std::move(merge_function);
|
|
}
|
|
|
|
void add_query(int64 query_id, Promise<Unit> &&promise, const char *source);
|
|
|
|
private:
|
|
struct QueryInfo {
|
|
vector<Promise<Unit>> promises_;
|
|
};
|
|
|
|
size_t query_count_ = 0;
|
|
size_t max_concurrent_query_count_;
|
|
size_t max_merged_query_count_;
|
|
|
|
MergeFunction merge_function_;
|
|
std::queue<int64> pending_queries_;
|
|
FlatHashMap<int64, QueryInfo> queries_;
|
|
|
|
void send_query(vector<int64> query_ids);
|
|
|
|
void on_get_query_result(vector<int64> query_ids, Result<Unit> &&result);
|
|
|
|
void loop() final;
|
|
};
|
|
|
|
} // namespace td
|